drivers/net/ethernet/intel/i40e/i40e_main.c

   1 /*******************************************************************************
   2  *
   3  * Intel Ethernet Controller XL710 Family Linux Driver
   4  * Copyright(c) 2013 - 2016 Intel Corporation.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  *
  18  * The full GNU General Public License is included in this distribution in
  19  * the file called "COPYING".
  20  *
  21  * Contact Information:
  22  * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  23  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  24  *
  25  ******************************************************************************/
  26
  27 #include <linux/etherdevice.h>
  28 #include <linux/of_net.h>
  29 #include <linux/pci.h>
  30
  31 /* Local includes */
  32 #include "i40e.h"
  33 #include "i40e_diag.h"
  34 #include <net/udp_tunnel.h>
  35 /* All i40e tracepoints are defined by the include below, which
  36  * must be included exactly once across the whole kernel with
  37  * CREATE_TRACE_POINTS defined
  38  */
  39 #define CREATE_TRACE_POINTS
  40 #include "i40e_trace.h"
  41
  42 const char i40e_driver_name[] = "i40e";
  43 static const char i40e_driver_string[] =
  44                         "Intel(R) Ethernet Connection XL710 Network Driver";
  45
  46 #define DRV_KERN "-k"
  47
  48 #define DRV_VERSION_MAJOR 2
  49 #define DRV_VERSION_MINOR 1
  50 #define DRV_VERSION_BUILD 7
  51 #define DRV_VERSION __stringify(DRV_VERSION_MAJOR) "." \
  52              __stringify(DRV_VERSION_MINOR) "." \
  53              __stringify(DRV_VERSION_BUILD)    DRV_KERN
  54 const char i40e_driver_version_str[] = DRV_VERSION;
  55 static const char i40e_copyright[] = "Copyright (c) 2013 - 2014 Intel Corporation.";
  56
  57 /* a bit of forward declarations */
  58 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi);
  59 static void i40e_handle_reset_warning(struct i40e_pf *pf, bool lock_acquired);
  60 static int i40e_add_vsi(struct i40e_vsi *vsi);
  61 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi);
  62 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit);
  63 static int i40e_setup_misc_vector(struct i40e_pf *pf);
  64 static void i40e_determine_queue_usage(struct i40e_pf *pf);
  65 static int i40e_setup_pf_filter_control(struct i40e_pf *pf);
  66 static void i40e_prep_for_reset(struct i40e_pf *pf, bool lock_acquired);
  67 static int i40e_reset(struct i40e_pf *pf);
  68 static void i40e_rebuild(struct i40e_pf *pf, bool reinit, bool lock_acquired);
  69 static void i40e_fdir_sb_setup(struct i40e_pf *pf);
  70 static int i40e_veb_get_bw_info(struct i40e_veb *veb);
  71
  72 /* i40e_pci_tbl - PCI Device ID Table
  73  *
  74  * Last entry must be all 0s
  75  *
  76  * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
  77  *   Class, Class Mask, private data (not used) }
  78  */
  79 static const struct pci_device_id i40e_pci_tbl[] = {
  80         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_XL710), 0},
  81         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QEMU), 0},
  82         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_B), 0},
  83         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_C), 0},
  84         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_A), 0},
  85         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_B), 0},
  86         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_C), 0},
  87         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T), 0},
  88         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T4), 0},
  89         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_X722), 0},
  90         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_X722), 0},
  91         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_X722), 0},
  92         {PCI_VDEVICE(INTEL, I40E_DEV_ID_1G_BASE_T_X722), 0},
  93         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T_X722), 0},
  94         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_I_X722), 0},
  95         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  96         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2_A), 0},
  97         {PCI_VDEVICE(INTEL, I40E_DEV_ID_25G_B), 0},
  98         {PCI_VDEVICE(INTEL, I40E_DEV_ID_25G_SFP28), 0},
  99         /* required last entry */
 100         {0, }
 101 };
 102 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
 103
 104 #define I40E_MAX_VF_COUNT 128
 105 static int debug = -1;
 106 module_param(debug, uint, 0);
 107 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all), Debug mask (0x8XXXXXXX)");
 108
 109 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
 110 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
 111 MODULE_LICENSE("GPL");
 112 MODULE_VERSION(DRV_VERSION);
 113
 114 static struct workqueue_struct *i40e_wq;
 115
 116 /**
 117  * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
 118  * @hw:   pointer to the HW structure
 119  * @mem:  ptr to mem struct to fill out
 120  * @size: size of memory requested
 121  * @alignment: what to align the allocation to
 122  **/
 123 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
 124                             u64 size, u32 alignment)
 125 {
 126         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 127
 128         mem->size = ALIGN(size, alignment);
 129         mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
 130                                       &mem->pa, GFP_KERNEL);
 131         if (!mem->va)
 132                 return -ENOMEM;
 133
 134         return 0;
 135 }
 136
 137 /**
 138  * i40e_free_dma_mem_d - OS specific memory free for shared code
 139  * @hw:   pointer to the HW structure
 140  * @mem:  ptr to mem struct to free
 141  **/
 142 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
 143 {
 144         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 145
 146         dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
 147         mem->va = NULL;
 148         mem->pa = 0;
 149         mem->size = 0;
 150
 151         return 0;
 152 }
 153
 154 /**
 155  * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 156  * @hw:   pointer to the HW structure
 157  * @mem:  ptr to mem struct to fill out
 158  * @size: size of memory requested
 159  **/
 160 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
 161                              u32 size)
 162 {
 163         mem->size = size;
 164         mem->va = kzalloc(size, GFP_KERNEL);
 165
 166         if (!mem->va)
 167                 return -ENOMEM;
 168
 169         return 0;
 170 }
 171
 172 /**
 173  * i40e_free_virt_mem_d - OS specific memory free for shared code
 174  * @hw:   pointer to the HW structure
 175  * @mem:  ptr to mem struct to free
 176  **/
 177 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
 178 {
 179         /* it's ok to kfree a NULL pointer */
 180         kfree(mem->va);
 181         mem->va = NULL;
 182         mem->size = 0;
 183
 184         return 0;
 185 }
 186
 187 /**
 188  * i40e_get_lump - find a lump of free generic resource
 189  * @pf: board private structure
 190  * @pile: the pile of resource to search
 191  * @needed: the number of items needed
 192  * @id: an owner id to stick on the items assigned
 193  *
 194  * Returns the base item index of the lump, or negative for error
 195  *
 196  * The search_hint trick and lack of advanced fit-finding only work
 197  * because we're highly likely to have all the same size lump requests.
 198  * Linear search time and any fragmentation should be minimal.
 199  **/
 200 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 201                          u16 needed, u16 id)
 202 {
 203         int ret = -ENOMEM;
 204         int i, j;
 205
 206         if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
 207                 dev_info(&pf->pdev->dev,
 208                          "param err: pile=%p needed=%d id=0x%04x\n",
 209                          pile, needed, id);
 210                 return -EINVAL;
 211         }
 212
 213         /* start the linear search with an imperfect hint */
 214         i = pile->search_hint;
 215         while (i < pile->num_entries) {
 216                 /* skip already allocated entries */
 217                 if (pile->list[i] & I40E_PILE_VALID_BIT) {
 218                         i++;
 219                         continue;
 220                 }
 221
 222                 /* do we have enough in this lump? */
 223                 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
 224                         if (pile->list[i+j] & I40E_PILE_VALID_BIT)
 225                                 break;
 226                 }
 227
 228                 if (j == needed) {
 229                         /* there was enough, so assign it to the requestor */
 230                         for (j = 0; j < needed; j++)
 231                                 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 232                         ret = i;
 233                         pile->search_hint = i + j;
 234                         break;
 235                 }
 236
 237                 /* not enough, so skip over it and continue looking */
 238                 i += j;
 239         }
 240
 241         return ret;
 242 }
 243
 244 /**
 245  * i40e_put_lump - return a lump of generic resource
 246  * @pile: the pile of resource to search
 247  * @index: the base item index
 248  * @id: the owner id of the items assigned
 249  *
 250  * Returns the count of items in the lump
 251  **/
 252 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
 253 {
 254         int valid_id = (id | I40E_PILE_VALID_BIT);
 255         int count = 0;
 256         int i;
 257
 258         if (!pile || index >= pile->num_entries)
 259                 return -EINVAL;
 260
 261         for (i = index;
 262              i < pile->num_entries && pile->list[i] == valid_id;
 263              i++) {
 264                 pile->list[i] = 0;
 265                 count++;
 266         }
 267
 268         if (count && index < pile->search_hint)
 269                 pile->search_hint = index;
 270
 271         return count;
 272 }
 273
 274 /**
 275  * i40e_find_vsi_from_id - searches for the vsi with the given id
 276  * @pf - the pf structure to search for the vsi
 277  * @id - id of the vsi it is searching for
 278  **/
 279 struct i40e_vsi *i40e_find_vsi_from_id(struct i40e_pf *pf, u16 id)
 280 {
 281         int i;
 282
 283         for (i = 0; i < pf->num_alloc_vsi; i++)
 284                 if (pf->vsi[i] && (pf->vsi[i]->id == id))
 285                         return pf->vsi[i];
 286
 287         return NULL;
 288 }
 289
 290 /**
 291  * i40e_service_event_schedule - Schedule the service task to wake up
 292  * @pf: board private structure
 293  *
 294  * If not already scheduled, this puts the task into the work queue
 295  **/
 296 void i40e_service_event_schedule(struct i40e_pf *pf)
 297 {
 298         if (!test_bit(__I40E_DOWN, &pf->state) &&
 299             !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
 300                 queue_work(i40e_wq, &pf->service_task);
 301 }
 302
 303 /**
 304  * i40e_tx_timeout - Respond to a Tx Hang
 305  * @netdev: network interface device structure
 306  *
 307  * If any port has noticed a Tx timeout, it is likely that the whole
 308  * device is munged, not just the one netdev port, so go for the full
 309  * reset.
 310  **/
 311 static void i40e_tx_timeout(struct net_device *netdev)
 312 {
 313         struct i40e_netdev_priv *np = netdev_priv(netdev);
 314         struct i40e_vsi *vsi = np->vsi;
 315         struct i40e_pf *pf = vsi->back;
 316         struct i40e_ring *tx_ring = NULL;
 317         unsigned int i, hung_queue = 0;
 318         u32 head, val;
 319
 320         pf->tx_timeout_count++;
 321
 322         /* find the stopped queue the same way the stack does */
 323         for (i = 0; i < netdev->num_tx_queues; i++) {
 324                 struct netdev_queue *q;
 325                 unsigned long trans_start;
 326
 327                 q = netdev_get_tx_queue(netdev, i);
 328                 trans_start = q->trans_start;
 329                 if (netif_xmit_stopped(q) &&
 330                     time_after(jiffies,
 331                                (trans_start + netdev->watchdog_timeo))) {
 332                         hung_queue = i;
 333                         break;
 334                 }
 335         }
 336
 337         if (i == netdev->num_tx_queues) {
 338                 netdev_info(netdev, "tx_timeout: no netdev hung queue found\n");
 339         } else {
 340                 /* now that we have an index, find the tx_ring struct */
 341                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 342                         if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
 343                                 if (hung_queue ==
 344                                     vsi->tx_rings[i]->queue_index) {
 345                                         tx_ring = vsi->tx_rings[i];
 346                                         break;
 347                                 }
 348                         }
 349                 }
 350         }
 351
 352         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 353                 pf->tx_timeout_recovery_level = 1;  /* reset after some time */
 354         else if (time_before(jiffies,
 355                       (pf->tx_timeout_last_recovery + netdev->watchdog_timeo)))
 356                 return;   /* don't do any new action before the next timeout */
 357
 358         if (tx_ring) {
 359                 head = i40e_get_head(tx_ring);
 360                 /* Read interrupt register */
 361                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
 362                         val = rd32(&pf->hw,
 363                              I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
 364                                                 tx_ring->vsi->base_vector - 1));
 365                 else
 366                         val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
 367
 368                 netdev_info(netdev, "tx_timeout: VSI_seid: %d, Q %d, NTC: 0x%x, HWB: 0x%x, NTU: 0x%x, TAIL: 0x%x, INT: 0x%x\n",
 369                             vsi->seid, hung_queue, tx_ring->next_to_clean,
 370                             head, tx_ring->next_to_use,
 371                             readl(tx_ring->tail), val);
 372         }
 373
 374         pf->tx_timeout_last_recovery = jiffies;
 375         netdev_info(netdev, "tx_timeout recovery level %d, hung_queue %d\n",
 376                     pf->tx_timeout_recovery_level, hung_queue);
 377
 378         switch (pf->tx_timeout_recovery_level) {
 379         case 1:
 380                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
 381                 break;
 382         case 2:
 383                 set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
 384                 break;
 385         case 3:
 386                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
 387                 break;
 388         default:
 389                 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
 390                 break;
 391         }
 392
 393         i40e_service_event_schedule(pf);
 394         pf->tx_timeout_recovery_level++;
 395 }
 396
 397 /**
 398  * i40e_get_vsi_stats_struct - Get System Network Statistics
 399  * @vsi: the VSI we care about
 400  *
 401  * Returns the address of the device statistics structure.
 402  * The statistics are actually updated from the service task.
 403  **/
 404 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 405 {
 406         return &vsi->net_stats;
 407 }
 408
 409 /**
 410  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 411  * @netdev: network interface device structure
 412  *
 413  * Returns the address of the device statistics structure.
 414  * The statistics are actually updated from the service task.
 415  **/
 416 static void i40e_get_netdev_stats_struct(struct net_device *netdev,
 417                                   struct rtnl_link_stats64 *stats)
 418 {
 419         struct i40e_netdev_priv *np = netdev_priv(netdev);
 420         struct i40e_ring *tx_ring, *rx_ring;
 421         struct i40e_vsi *vsi = np->vsi;
 422         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 423         int i;
 424
 425         if (test_bit(__I40E_DOWN, &vsi->state))
 426                 return;
 427
 428         if (!vsi->tx_rings)
 429                 return;
 430
 431         rcu_read_lock();
 432         for (i = 0; i < vsi->num_queue_pairs; i++) {
 433                 u64 bytes, packets;
 434                 unsigned int start;
 435
 436                 tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
 437                 if (!tx_ring)
 438                         continue;
 439
 440                 do {
 441                         start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
 442                         packets = tx_ring->stats.packets;
 443                         bytes   = tx_ring->stats.bytes;
 444                 } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
 445
 446                 stats->tx_packets += packets;
 447                 stats->tx_bytes   += bytes;
 448                 rx_ring = &tx_ring[1];
 449
 450                 do {
 451                         start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
 452                         packets = rx_ring->stats.packets;
 453                         bytes   = rx_ring->stats.bytes;
 454                 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
 455
 456                 stats->rx_packets += packets;
 457                 stats->rx_bytes   += bytes;
 458         }
 459         rcu_read_unlock();
 460
 461         /* following stats updated by i40e_watchdog_subtask() */
 462         stats->multicast        = vsi_stats->multicast;
 463         stats->tx_errors        = vsi_stats->tx_errors;
 464         stats->tx_dropped       = vsi_stats->tx_dropped;
 465         stats->rx_errors        = vsi_stats->rx_errors;
 466         stats->rx_dropped       = vsi_stats->rx_dropped;
 467         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 468         stats->rx_length_errors = vsi_stats->rx_length_errors;
 469 }
 470
 471 /**
 472  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 473  * @vsi: the VSI to have its stats reset
 474  **/
 475 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 476 {
 477         struct rtnl_link_stats64 *ns;
 478         int i;
 479
 480         if (!vsi)
 481                 return;
 482
 483         ns = i40e_get_vsi_stats_struct(vsi);
 484         memset(ns, 0, sizeof(*ns));
 485         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 486         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 487         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 488         if (vsi->rx_rings && vsi->rx_rings[0]) {
 489                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 490                         memset(&vsi->rx_rings[i]->stats, 0,
 491                                sizeof(vsi->rx_rings[i]->stats));
 492                         memset(&vsi->rx_rings[i]->rx_stats, 0,
 493                                sizeof(vsi->rx_rings[i]->rx_stats));
 494                         memset(&vsi->tx_rings[i]->stats, 0,
 495                                sizeof(vsi->tx_rings[i]->stats));
 496                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 497                                sizeof(vsi->tx_rings[i]->tx_stats));
 498                 }
 499         }
 500         vsi->stat_offsets_loaded = false;
 501 }
 502
 503 /**
 504  * i40e_pf_reset_stats - Reset all of the stats for the given PF
 505  * @pf: the PF to be reset
 506  **/
 507 void i40e_pf_reset_stats(struct i40e_pf *pf)
 508 {
 509         int i;
 510
 511         memset(&pf->stats, 0, sizeof(pf->stats));
 512         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 513         pf->stat_offsets_loaded = false;
 514
 515         for (i = 0; i < I40E_MAX_VEB; i++) {
 516                 if (pf->veb[i]) {
 517                         memset(&pf->veb[i]->stats, 0,
 518                                sizeof(pf->veb[i]->stats));
 519                         memset(&pf->veb[i]->stats_offsets, 0,
 520                                sizeof(pf->veb[i]->stats_offsets));
 521                         pf->veb[i]->stat_offsets_loaded = false;
 522                 }
 523         }
 524         pf->hw_csum_rx_error = 0;
 525 }
 526
 527 /**
 528  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 529  * @hw: ptr to the hardware info
 530  * @hireg: the high 32 bit reg to read
 531  * @loreg: the low 32 bit reg to read
 532  * @offset_loaded: has the initial offset been loaded yet
 533  * @offset: ptr to current offset value
 534  * @stat: ptr to the stat
 535  *
 536  * Since the device stats are not reset at PFReset, they likely will not
 537  * be zeroed when the driver starts.  We'll save the first values read
 538  * and use them as offsets to be subtracted from the raw values in order
 539  * to report stats that count from zero.  In the process, we also manage
 540  * the potential roll-over.
 541  **/
 542 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 543                                bool offset_loaded, u64 *offset, u64 *stat)
 544 {
 545         u64 new_data;
 546
 547         if (hw->device_id == I40E_DEV_ID_QEMU) {
 548                 new_data = rd32(hw, loreg);
 549                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 550         } else {
 551                 new_data = rd64(hw, loreg);
 552         }
 553         if (!offset_loaded)
 554                 *offset = new_data;
 555         if (likely(new_data >= *offset))
 556                 *stat = new_data - *offset;
 557         else
 558                 *stat = (new_data + BIT_ULL(48)) - *offset;
 559         *stat &= 0xFFFFFFFFFFFFULL;
 560 }
 561
 562 /**
 563  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 564  * @hw: ptr to the hardware info
 565  * @reg: the hw reg to read
 566  * @offset_loaded: has the initial offset been loaded yet
 567  * @offset: ptr to current offset value
 568  * @stat: ptr to the stat
 569  **/
 570 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 571                                bool offset_loaded, u64 *offset, u64 *stat)
 572 {
 573         u32 new_data;
 574
 575         new_data = rd32(hw, reg);
 576         if (!offset_loaded)
 577                 *offset = new_data;
 578         if (likely(new_data >= *offset))
 579                 *stat = (u32)(new_data - *offset);
 580         else
 581                 *stat = (u32)((new_data + BIT_ULL(32)) - *offset);
 582 }
 583
 584 /**
 585  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 586  * @vsi: the VSI to be updated
 587  **/
 588 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 589 {
 590         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 591         struct i40e_pf *pf = vsi->back;
 592         struct i40e_hw *hw = &pf->hw;
 593         struct i40e_eth_stats *oes;
 594         struct i40e_eth_stats *es;     /* device's eth stats */
 595
 596         es = &vsi->eth_stats;
 597         oes = &vsi->eth_stats_offsets;
 598
 599         /* Gather up the stats that the hw collects */
 600         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 601                            vsi->stat_offsets_loaded,
 602                            &oes->tx_errors, &es->tx_errors);
 603         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 604                            vsi->stat_offsets_loaded,
 605                            &oes->rx_discards, &es->rx_discards);
 606         i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
 607                            vsi->stat_offsets_loaded,
 608                            &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
 609         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 610                            vsi->stat_offsets_loaded,
 611                            &oes->tx_errors, &es->tx_errors);
 612
 613         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 614                            I40E_GLV_GORCL(stat_idx),
 615                            vsi->stat_offsets_loaded,
 616                            &oes->rx_bytes, &es->rx_bytes);
 617         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 618                            I40E_GLV_UPRCL(stat_idx),
 619                            vsi->stat_offsets_loaded,
 620                            &oes->rx_unicast, &es->rx_unicast);
 621         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 622                            I40E_GLV_MPRCL(stat_idx),
 623                            vsi->stat_offsets_loaded,
 624                            &oes->rx_multicast, &es->rx_multicast);
 625         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 626                            I40E_GLV_BPRCL(stat_idx),
 627                            vsi->stat_offsets_loaded,
 628                            &oes->rx_broadcast, &es->rx_broadcast);
 629
 630         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 631                            I40E_GLV_GOTCL(stat_idx),
 632                            vsi->stat_offsets_loaded,
 633                            &oes->tx_bytes, &es->tx_bytes);
 634         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 635                            I40E_GLV_UPTCL(stat_idx),
 636                            vsi->stat_offsets_loaded,
 637                            &oes->tx_unicast, &es->tx_unicast);
 638         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 639                            I40E_GLV_MPTCL(stat_idx),
 640                            vsi->stat_offsets_loaded,
 641                            &oes->tx_multicast, &es->tx_multicast);
 642         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 643                            I40E_GLV_BPTCL(stat_idx),
 644                            vsi->stat_offsets_loaded,
 645                            &oes->tx_broadcast, &es->tx_broadcast);
 646         vsi->stat_offsets_loaded = true;
 647 }
 648
 649 /**
 650  * i40e_update_veb_stats - Update Switch component statistics
 651  * @veb: the VEB being updated
 652  **/
 653 static void i40e_update_veb_stats(struct i40e_veb *veb)
 654 {
 655         struct i40e_pf *pf = veb->pf;
 656         struct i40e_hw *hw = &pf->hw;
 657         struct i40e_eth_stats *oes;
 658         struct i40e_eth_stats *es;     /* device's eth stats */
 659         struct i40e_veb_tc_stats *veb_oes;
 660         struct i40e_veb_tc_stats *veb_es;
 661         int i, idx = 0;
 662
 663         idx = veb->stats_idx;
 664         es = &veb->stats;
 665         oes = &veb->stats_offsets;
 666         veb_es = &veb->tc_stats;
 667         veb_oes = &veb->tc_stats_offsets;
 668
 669         /* Gather up the stats that the hw collects */
 670         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 671                            veb->stat_offsets_loaded,
 672                            &oes->tx_discards, &es->tx_discards);
 673         if (hw->revision_id > 0)
 674                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 675                                    veb->stat_offsets_loaded,
 676                                    &oes->rx_unknown_protocol,
 677                                    &es->rx_unknown_protocol);
 678         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 679                            veb->stat_offsets_loaded,
 680                            &oes->rx_bytes, &es->rx_bytes);
 681         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 682                            veb->stat_offsets_loaded,
 683                            &oes->rx_unicast, &es->rx_unicast);
 684         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 685                            veb->stat_offsets_loaded,
 686                            &oes->rx_multicast, &es->rx_multicast);
 687         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 688                            veb->stat_offsets_loaded,
 689                            &oes->rx_broadcast, &es->rx_broadcast);
 690
 691         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 692                            veb->stat_offsets_loaded,
 693                            &oes->tx_bytes, &es->tx_bytes);
 694         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 695                            veb->stat_offsets_loaded,
 696                            &oes->tx_unicast, &es->tx_unicast);
 697         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 698                            veb->stat_offsets_loaded,
 699                            &oes->tx_multicast, &es->tx_multicast);
 700         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 701                            veb->stat_offsets_loaded,
 702                            &oes->tx_broadcast, &es->tx_broadcast);
 703         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
 704                 i40e_stat_update48(hw, I40E_GLVEBTC_RPCH(i, idx),
 705                                    I40E_GLVEBTC_RPCL(i, idx),
 706                                    veb->stat_offsets_loaded,
 707                                    &veb_oes->tc_rx_packets[i],
 708                                    &veb_es->tc_rx_packets[i]);
 709                 i40e_stat_update48(hw, I40E_GLVEBTC_RBCH(i, idx),
 710                                    I40E_GLVEBTC_RBCL(i, idx),
 711                                    veb->stat_offsets_loaded,
 712                                    &veb_oes->tc_rx_bytes[i],
 713                                    &veb_es->tc_rx_bytes[i]);
 714                 i40e_stat_update48(hw, I40E_GLVEBTC_TPCH(i, idx),
 715                                    I40E_GLVEBTC_TPCL(i, idx),
 716                                    veb->stat_offsets_loaded,
 717                                    &veb_oes->tc_tx_packets[i],
 718                                    &veb_es->tc_tx_packets[i]);
 719                 i40e_stat_update48(hw, I40E_GLVEBTC_TBCH(i, idx),
 720                                    I40E_GLVEBTC_TBCL(i, idx),
 721                                    veb->stat_offsets_loaded,
 722                                    &veb_oes->tc_tx_bytes[i],
 723                                    &veb_es->tc_tx_bytes[i]);
 724         }
 725         veb->stat_offsets_loaded = true;
 726 }
 727
 728 /**
 729  * i40e_update_vsi_stats - Update the vsi statistics counters.
 730  * @vsi: the VSI to be updated
 731  *
 732  * There are a few instances where we store the same stat in a
 733  * couple of different structs.  This is partly because we have
 734  * the netdev stats that need to be filled out, which is slightly
 735  * different from the "eth_stats" defined by the chip and used in
 736  * VF communications.  We sort it out here.
 737  **/
 738 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 739 {
 740         struct i40e_pf *pf = vsi->back;
 741         struct rtnl_link_stats64 *ons;
 742         struct rtnl_link_stats64 *ns;   /* netdev stats */
 743         struct i40e_eth_stats *oes;
 744         struct i40e_eth_stats *es;     /* device's eth stats */
 745         u32 tx_restart, tx_busy;
 746         struct i40e_ring *p;
 747         u32 rx_page, rx_buf;
 748         u64 bytes, packets;
 749         unsigned int start;
 750         u64 tx_linearize;
 751         u64 tx_force_wb;
 752         u64 rx_p, rx_b;
 753         u64 tx_p, tx_b;
 754         u16 q;
 755
 756         if (test_bit(__I40E_DOWN, &vsi->state) ||
 757             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 758                 return;
 759
 760         ns = i40e_get_vsi_stats_struct(vsi);
 761         ons = &vsi->net_stats_offsets;
 762         es = &vsi->eth_stats;
 763         oes = &vsi->eth_stats_offsets;
 764
 765         /* Gather up the netdev and vsi stats that the driver collects
 766          * on the fly during packet processing
 767          */
 768         rx_b = rx_p = 0;
 769         tx_b = tx_p = 0;
 770         tx_restart = tx_busy = tx_linearize = tx_force_wb = 0;
 771         rx_page = 0;
 772         rx_buf = 0;
 773         rcu_read_lock();
 774         for (q = 0; q < vsi->num_queue_pairs; q++) {
 775                 /* locate Tx ring */
 776                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 777
 778                 do {
 779                         start = u64_stats_fetch_begin_irq(&p->syncp);
 780                         packets = p->stats.packets;
 781                         bytes = p->stats.bytes;
 782                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 783                 tx_b += bytes;
 784                 tx_p += packets;
 785                 tx_restart += p->tx_stats.restart_queue;
 786                 tx_busy += p->tx_stats.tx_busy;
 787                 tx_linearize += p->tx_stats.tx_linearize;
 788                 tx_force_wb += p->tx_stats.tx_force_wb;
 789
 790                 /* Rx queue is part of the same block as Tx queue */
 791                 p = &p[1];
 792                 do {
 793                         start = u64_stats_fetch_begin_irq(&p->syncp);
 794                         packets = p->stats.packets;
 795                         bytes = p->stats.bytes;
 796                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 797                 rx_b += bytes;
 798                 rx_p += packets;
 799                 rx_buf += p->rx_stats.alloc_buff_failed;
 800                 rx_page += p->rx_stats.alloc_page_failed;
 801         }
 802         rcu_read_unlock();
 803         vsi->tx_restart = tx_restart;
 804         vsi->tx_busy = tx_busy;
 805         vsi->tx_linearize = tx_linearize;
 806         vsi->tx_force_wb = tx_force_wb;
 807         vsi->rx_page_failed = rx_page;
 808         vsi->rx_buf_failed = rx_buf;
 809
 810         ns->rx_packets = rx_p;
 811         ns->rx_bytes = rx_b;
 812         ns->tx_packets = tx_p;
 813         ns->tx_bytes = tx_b;
 814
 815         /* update netdev stats from eth stats */
 816         i40e_update_eth_stats(vsi);
 817         ons->tx_errors = oes->tx_errors;
 818         ns->tx_errors = es->tx_errors;
 819         ons->multicast = oes->rx_multicast;
 820         ns->multicast = es->rx_multicast;
 821         ons->rx_dropped = oes->rx_discards;
 822         ns->rx_dropped = es->rx_discards;
 823         ons->tx_dropped = oes->tx_discards;
 824         ns->tx_dropped = es->tx_discards;
 825
 826         /* pull in a couple PF stats if this is the main vsi */
 827         if (vsi == pf->vsi[pf->lan_vsi]) {
 828                 ns->rx_crc_errors = pf->stats.crc_errors;
 829                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 830                 ns->rx_length_errors = pf->stats.rx_length_errors;
 831         }
 832 }
 833
 834 /**
 835  * i40e_update_pf_stats - Update the PF statistics counters.
 836  * @pf: the PF to be updated
 837  **/
 838 static void i40e_update_pf_stats(struct i40e_pf *pf)
 839 {
 840         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 841         struct i40e_hw_port_stats *nsd = &pf->stats;
 842         struct i40e_hw *hw = &pf->hw;
 843         u32 val;
 844         int i;
 845
 846         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 847                            I40E_GLPRT_GORCL(hw->port),
 848                            pf->stat_offsets_loaded,
 849                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 850         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 851                            I40E_GLPRT_GOTCL(hw->port),
 852                            pf->stat_offsets_loaded,
 853                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 854         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 855                            pf->stat_offsets_loaded,
 856                            &osd->eth.rx_discards,
 857                            &nsd->eth.rx_discards);
 858         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 859                            I40E_GLPRT_UPRCL(hw->port),
 860                            pf->stat_offsets_loaded,
 861                            &osd->eth.rx_unicast,
 862                            &nsd->eth.rx_unicast);
 863         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 864                            I40E_GLPRT_MPRCL(hw->port),
 865                            pf->stat_offsets_loaded,
 866                            &osd->eth.rx_multicast,
 867                            &nsd->eth.rx_multicast);
 868         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
 869                            I40E_GLPRT_BPRCL(hw->port),
 870                            pf->stat_offsets_loaded,
 871                            &osd->eth.rx_broadcast,
 872                            &nsd->eth.rx_broadcast);
 873         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
 874                            I40E_GLPRT_UPTCL(hw->port),
 875                            pf->stat_offsets_loaded,
 876                            &osd->eth.tx_unicast,
 877                            &nsd->eth.tx_unicast);
 878         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
 879                            I40E_GLPRT_MPTCL(hw->port),
 880                            pf->stat_offsets_loaded,
 881                            &osd->eth.tx_multicast,
 882                            &nsd->eth.tx_multicast);
 883         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
 884                            I40E_GLPRT_BPTCL(hw->port),
 885                            pf->stat_offsets_loaded,
 886                            &osd->eth.tx_broadcast,
 887                            &nsd->eth.tx_broadcast);
 888
 889         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
 890                            pf->stat_offsets_loaded,
 891                            &osd->tx_dropped_link_down,
 892                            &nsd->tx_dropped_link_down);
 893
 894         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
 895                            pf->stat_offsets_loaded,
 896                            &osd->crc_errors, &nsd->crc_errors);
 897
 898         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
 899                            pf->stat_offsets_loaded,
 900                            &osd->illegal_bytes, &nsd->illegal_bytes);
 901
 902         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
 903                            pf->stat_offsets_loaded,
 904                            &osd->mac_local_faults,
 905                            &nsd->mac_local_faults);
 906         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
 907                            pf->stat_offsets_loaded,
 908                            &osd->mac_remote_faults,
 909                            &nsd->mac_remote_faults);
 910
 911         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
 912                            pf->stat_offsets_loaded,
 913                            &osd->rx_length_errors,
 914                            &nsd->rx_length_errors);
 915
 916         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
 917                            pf->stat_offsets_loaded,
 918                            &osd->link_xon_rx, &nsd->link_xon_rx);
 919         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
 920                            pf->stat_offsets_loaded,
 921                            &osd->link_xon_tx, &nsd->link_xon_tx);
 922         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
 923                            pf->stat_offsets_loaded,
 924                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
 925         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
 926                            pf->stat_offsets_loaded,
 927                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
 928
 929         for (i = 0; i < 8; i++) {
 930                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 931                                    pf->stat_offsets_loaded,
 932                                    &osd->priority_xoff_rx[i],
 933                                    &nsd->priority_xoff_rx[i]);
 934                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
 935                                    pf->stat_offsets_loaded,
 936                                    &osd->priority_xon_rx[i],
 937                                    &nsd->priority_xon_rx[i]);
 938                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
 939                                    pf->stat_offsets_loaded,
 940                                    &osd->priority_xon_tx[i],
 941                                    &nsd->priority_xon_tx[i]);
 942                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
 943                                    pf->stat_offsets_loaded,
 944                                    &osd->priority_xoff_tx[i],
 945                                    &nsd->priority_xoff_tx[i]);
 946                 i40e_stat_update32(hw,
 947                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
 948                                    pf->stat_offsets_loaded,
 949                                    &osd->priority_xon_2_xoff[i],
 950                                    &nsd->priority_xon_2_xoff[i]);
 951         }
 952
 953         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
 954                            I40E_GLPRT_PRC64L(hw->port),
 955                            pf->stat_offsets_loaded,
 956                            &osd->rx_size_64, &nsd->rx_size_64);
 957         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
 958                            I40E_GLPRT_PRC127L(hw->port),
 959                            pf->stat_offsets_loaded,
 960                            &osd->rx_size_127, &nsd->rx_size_127);
 961         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
 962                            I40E_GLPRT_PRC255L(hw->port),
 963                            pf->stat_offsets_loaded,
 964                            &osd->rx_size_255, &nsd->rx_size_255);
 965         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
 966                            I40E_GLPRT_PRC511L(hw->port),
 967                            pf->stat_offsets_loaded,
 968                            &osd->rx_size_511, &nsd->rx_size_511);
 969         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
 970                            I40E_GLPRT_PRC1023L(hw->port),
 971                            pf->stat_offsets_loaded,
 972                            &osd->rx_size_1023, &nsd->rx_size_1023);
 973         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
 974                            I40E_GLPRT_PRC1522L(hw->port),
 975                            pf->stat_offsets_loaded,
 976                            &osd->rx_size_1522, &nsd->rx_size_1522);
 977         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
 978                            I40E_GLPRT_PRC9522L(hw->port),
 979                            pf->stat_offsets_loaded,
 980                            &osd->rx_size_big, &nsd->rx_size_big);
 981
 982         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
 983                            I40E_GLPRT_PTC64L(hw->port),
 984                            pf->stat_offsets_loaded,
 985                            &osd->tx_size_64, &nsd->tx_size_64);
 986         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
 987                            I40E_GLPRT_PTC127L(hw->port),
 988                            pf->stat_offsets_loaded,
 989                            &osd->tx_size_127, &nsd->tx_size_127);
 990         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
 991                            I40E_GLPRT_PTC255L(hw->port),
 992                            pf->stat_offsets_loaded,
 993                            &osd->tx_size_255, &nsd->tx_size_255);
 994         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
 995                            I40E_GLPRT_PTC511L(hw->port),
 996                            pf->stat_offsets_loaded,
 997                            &osd->tx_size_511, &nsd->tx_size_511);
 998         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
 999                            I40E_GLPRT_PTC1023L(hw->port),
1000                            pf->stat_offsets_loaded,
1001                            &osd->tx_size_1023, &nsd->tx_size_1023);
1002         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1003                            I40E_GLPRT_PTC1522L(hw->port),
1004                            pf->stat_offsets_loaded,
1005                            &osd->tx_size_1522, &nsd->tx_size_1522);
1006         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1007                            I40E_GLPRT_PTC9522L(hw->port),
1008                            pf->stat_offsets_loaded,
1009                            &osd->tx_size_big, &nsd->tx_size_big);
1010
1011         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1012                            pf->stat_offsets_loaded,
1013                            &osd->rx_undersize, &nsd->rx_undersize);
1014         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1015                            pf->stat_offsets_loaded,
1016                            &osd->rx_fragments, &nsd->rx_fragments);
1017         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1018                            pf->stat_offsets_loaded,
1019                            &osd->rx_oversize, &nsd->rx_oversize);
1020         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1021                            pf->stat_offsets_loaded,
1022                            &osd->rx_jabber, &nsd->rx_jabber);
1023
1024         /* FDIR stats */
1025         i40e_stat_update32(hw,
1026                            I40E_GLQF_PCNT(I40E_FD_ATR_STAT_IDX(pf->hw.pf_id)),
1027                            pf->stat_offsets_loaded,
1028                            &osd->fd_atr_match, &nsd->fd_atr_match);
1029         i40e_stat_update32(hw,
1030                            I40E_GLQF_PCNT(I40E_FD_SB_STAT_IDX(pf->hw.pf_id)),
1031                            pf->stat_offsets_loaded,
1032                            &osd->fd_sb_match, &nsd->fd_sb_match);
1033         i40e_stat_update32(hw,
1034                       I40E_GLQF_PCNT(I40E_FD_ATR_TUNNEL_STAT_IDX(pf->hw.pf_id)),
1035                       pf->stat_offsets_loaded,
1036                       &osd->fd_atr_tunnel_match, &nsd->fd_atr_tunnel_match);
1037
1038         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1039         nsd->tx_lpi_status =
1040                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1041                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1042         nsd->rx_lpi_status =
1043                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1044                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1045         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1046                            pf->stat_offsets_loaded,
1047                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1048         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1049                            pf->stat_offsets_loaded,
1050                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1051
1052         if (pf->flags & I40E_FLAG_FD_SB_ENABLED &&
1053             !(pf->hw_disabled_flags & I40E_FLAG_FD_SB_ENABLED))
1054                 nsd->fd_sb_status = true;
1055         else
1056                 nsd->fd_sb_status = false;
1057
1058         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED &&
1059             !(pf->hw_disabled_flags & I40E_FLAG_FD_ATR_ENABLED))
1060                 nsd->fd_atr_status = true;
1061         else
1062                 nsd->fd_atr_status = false;
1063
1064         pf->stat_offsets_loaded = true;
1065 }
1066
1067 /**
1068  * i40e_update_stats - Update the various statistics counters.
1069  * @vsi: the VSI to be updated
1070  *
1071  * Update the various stats for this VSI and its related entities.
1072  **/
1073 void i40e_update_stats(struct i40e_vsi *vsi)
1074 {
1075         struct i40e_pf *pf = vsi->back;
1076
1077         if (vsi == pf->vsi[pf->lan_vsi])
1078                 i40e_update_pf_stats(pf);
1079
1080         i40e_update_vsi_stats(vsi);
1081 }
1082
1083 /**
1084  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1085  * @vsi: the VSI to be searched
1086  * @macaddr: the MAC address
1087  * @vlan: the vlan
1088  *
1089  * Returns ptr to the filter object or NULL
1090  **/
1091 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1092                                                 const u8 *macaddr, s16 vlan)
1093 {
1094         struct i40e_mac_filter *f;
1095         u64 key;
1096
1097         if (!vsi || !macaddr)
1098                 return NULL;
1099
1100         key = i40e_addr_to_hkey(macaddr);
1101         hash_for_each_possible(vsi->mac_filter_hash, f, hlist, key) {
1102                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1103                     (vlan == f->vlan))
1104                         return f;
1105         }
1106         return NULL;
1107 }
1108
1109 /**
1110  * i40e_find_mac - Find a mac addr in the macvlan filters list
1111  * @vsi: the VSI to be searched
1112  * @macaddr: the MAC address we are searching for
1113  *
1114  * Returns the first filter with the provided MAC address or NULL if
1115  * MAC address was not found
1116  **/
1117 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, const u8 *macaddr)
1118 {
1119         struct i40e_mac_filter *f;
1120         u64 key;
1121
1122         if (!vsi || !macaddr)
1123                 return NULL;
1124
1125         key = i40e_addr_to_hkey(macaddr);
1126         hash_for_each_possible(vsi->mac_filter_hash, f, hlist, key) {
1127                 if ((ether_addr_equal(macaddr, f->macaddr)))
1128                         return f;
1129         }
1130         return NULL;
1131 }
1132
1133 /**
1134  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1135  * @vsi: the VSI to be searched
1136  *
1137  * Returns true if VSI is in vlan mode or false otherwise
1138  **/
1139 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1140 {
1141         /* If we have a PVID, always operate in VLAN mode */
1142         if (vsi->info.pvid)
1143                 return true;
1144
1145         /* We need to operate in VLAN mode whenever we have any filters with
1146          * a VLAN other than I40E_VLAN_ALL. We could check the table each
1147          * time, incurring search cost repeatedly. However, we can notice two
1148          * things:
1149          *
1150          * 1) the only place where we can gain a VLAN filter is in
1151          *    i40e_add_filter.
1152          *
1153          * 2) the only place where filters are actually removed is in
1154          *    i40e_sync_filters_subtask.
1155          *
1156          * Thus, we can simply use a boolean value, has_vlan_filters which we
1157          * will set to true when we add a VLAN filter in i40e_add_filter. Then
1158          * we have to perform the full search after deleting filters in
1159          * i40e_sync_filters_subtask, but we already have to search
1160          * filters here and can perform the check at the same time. This
1161          * results in avoiding embedding a loop for VLAN mode inside another
1162          * loop over all the filters, and should maintain correctness as noted
1163          * above.
1164          */
1165         return vsi->has_vlan_filter;
1166 }
1167
1168 /**
1169  * i40e_correct_mac_vlan_filters - Correct non-VLAN filters if necessary
1170  * @vsi: the VSI to configure
1171  * @tmp_add_list: list of filters ready to be added
1172  * @tmp_del_list: list of filters ready to be deleted
1173  * @vlan_filters: the number of active VLAN filters
1174  *
1175  * Update VLAN=0 and VLAN=-1 (I40E_VLAN_ANY) filters properly so that they
1176  * behave as expected. If we have any active VLAN filters remaining or about
1177  * to be added then we need to update non-VLAN filters to be marked as VLAN=0
1178  * so that they only match against untagged traffic. If we no longer have any
1179  * active VLAN filters, we need to make all non-VLAN filters marked as VLAN=-1
1180  * so that they match against both tagged and untagged traffic. In this way,
1181  * we ensure that we correctly receive the desired traffic. This ensures that
1182  * when we have an active VLAN we will receive only untagged traffic and
1183  * traffic matching active VLANs. If we have no active VLANs then we will
1184  * operate in non-VLAN mode and receive all traffic, tagged or untagged.
1185  *
1186  * Finally, in a similar fashion, this function also corrects filters when
1187  * there is an active PVID assigned to this VSI.
1188  *
1189  * In case of memory allocation failure return -ENOMEM. Otherwise, return 0.
1190  *
1191  * This function is only expected to be called from within
1192  * i40e_sync_vsi_filters.
1193  *
1194  * NOTE: This function expects to be called while under the
1195  * mac_filter_hash_lock
1196  */
1197 static int i40e_correct_mac_vlan_filters(struct i40e_vsi *vsi,
1198                                          struct hlist_head *tmp_add_list,
1199                                          struct hlist_head *tmp_del_list,
1200                                          int vlan_filters)
1201 {
1202         s16 pvid = le16_to_cpu(vsi->info.pvid);
1203         struct i40e_mac_filter *f, *add_head;
1204         struct i40e_new_mac_filter *new;
1205         struct hlist_node *h;
1206         int bkt, new_vlan;
1207
1208         /* To determine if a particular filter needs to be replaced we
1209          * have the three following conditions:
1210          *
1211          * a) if we have a PVID assigned, then all filters which are
1212          *    not marked as VLAN=PVID must be replaced with filters that
1213          *    are.
1214          * b) otherwise, if we have any active VLANS, all filters
1215          *    which are marked as VLAN=-1 must be replaced with
1216          *    filters marked as VLAN=0
1217          * c) finally, if we do not have any active VLANS, all filters
1218          *    which are marked as VLAN=0 must be replaced with filters
1219          *    marked as VLAN=-1
1220          */
1221
1222         /* Update the filters about to be added in place */
1223         hlist_for_each_entry(new, tmp_add_list, hlist) {
1224                 if (pvid && new->f->vlan != pvid)
1225                         new->f->vlan = pvid;
1226                 else if (vlan_filters && new->f->vlan == I40E_VLAN_ANY)
1227                         new->f->vlan = 0;
1228                 else if (!vlan_filters && new->f->vlan == 0)
1229                         new->f->vlan = I40E_VLAN_ANY;
1230         }
1231
1232         /* Update the remaining active filters */
1233         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
1234                 /* Combine the checks for whether a filter needs to be changed
1235                  * and then determine the new VLAN inside the if block, in
1236                  * order to avoid duplicating code for adding the new filter
1237                  * then deleting the old filter.
1238                  */
1239                 if ((pvid && f->vlan != pvid) ||
1240                     (vlan_filters && f->vlan == I40E_VLAN_ANY) ||
1241                     (!vlan_filters && f->vlan == 0)) {
1242                         /* Determine the new vlan we will be adding */
1243                         if (pvid)
1244                                 new_vlan = pvid;
1245                         else if (vlan_filters)
1246                                 new_vlan = 0;
1247                         else
1248                                 new_vlan = I40E_VLAN_ANY;
1249
1250                         /* Create the new filter */
1251                         add_head = i40e_add_filter(vsi, f->macaddr, new_vlan);
1252                         if (!add_head)
1253                                 return -ENOMEM;
1254
1255                         /* Create a temporary i40e_new_mac_filter */
1256                         new = kzalloc(sizeof(*new), GFP_ATOMIC);
1257                         if (!new)
1258                                 return -ENOMEM;
1259
1260                         new->f = add_head;
1261                         new->state = add_head->state;
1262
1263                         /* Add the new filter to the tmp list */
1264                         hlist_add_head(&new->hlist, tmp_add_list);
1265
1266                         /* Put the original filter into the delete list */
1267                         f->state = I40E_FILTER_REMOVE;
1268                         hash_del(&f->hlist);
1269                         hlist_add_head(&f->hlist, tmp_del_list);
1270                 }
1271         }
1272
1273         vsi->has_vlan_filter = !!vlan_filters;
1274
1275         return 0;
1276 }
1277
1278 /**
1279  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1280  * @vsi: the PF Main VSI - inappropriate for any other VSI
1281  * @macaddr: the MAC address
1282  *
1283  * Remove whatever filter the firmware set up so the driver can manage
1284  * its own filtering intelligently.
1285  **/
1286 static void i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1287 {
1288         struct i40e_aqc_remove_macvlan_element_data element;
1289         struct i40e_pf *pf = vsi->back;
1290
1291         /* Only appropriate for the PF main VSI */
1292         if (vsi->type != I40E_VSI_MAIN)
1293                 return;
1294
1295         memset(&element, 0, sizeof(element));
1296         ether_addr_copy(element.mac_addr, macaddr);
1297         element.vlan_tag = 0;
1298         /* Ignore error returns, some firmware does it this way... */
1299         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1300         i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1301
1302         memset(&element, 0, sizeof(element));
1303         ether_addr_copy(element.mac_addr, macaddr);
1304         element.vlan_tag = 0;
1305         /* ...and some firmware does it this way. */
1306         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1307                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1308         i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1309 }
1310
1311 /**
1312  * i40e_add_filter - Add a mac/vlan filter to the VSI
1313  * @vsi: the VSI to be searched
1314  * @macaddr: the MAC address
1315  * @vlan: the vlan
1316  *
1317  * Returns ptr to the filter object or NULL when no memory available.
1318  *
1319  * NOTE: This function is expected to be called with mac_filter_hash_lock
1320  * being held.
1321  **/
1322 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1323                                         const u8 *macaddr, s16 vlan)
1324 {
1325         struct i40e_mac_filter *f;
1326         u64 key;
1327
1328         if (!vsi || !macaddr)
1329                 return NULL;
1330
1331         f = i40e_find_filter(vsi, macaddr, vlan);
1332         if (!f) {
1333                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1334                 if (!f)
1335                         return NULL;
1336
1337                 /* Update the boolean indicating if we need to function in
1338                  * VLAN mode.
1339                  */
1340                 if (vlan >= 0)
1341                         vsi->has_vlan_filter = true;
1342
1343                 ether_addr_copy(f->macaddr, macaddr);
1344                 f->vlan = vlan;
1345                 /* If we're in overflow promisc mode, set the state directly
1346                  * to failed, so we don't bother to try sending the filter
1347                  * to the hardware.
1348                  */
1349                 if (test_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state))
1350                         f->state = I40E_FILTER_FAILED;
1351                 else
1352                         f->state = I40E_FILTER_NEW;
1353                 INIT_HLIST_NODE(&f->hlist);
1354
1355                 key = i40e_addr_to_hkey(macaddr);
1356                 hash_add(vsi->mac_filter_hash, &f->hlist, key);
1357
1358                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1359                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1360         }
1361
1362         /* If we're asked to add a filter that has been marked for removal, it
1363          * is safe to simply restore it to active state. __i40e_del_filter
1364          * will have simply deleted any filters which were previously marked
1365          * NEW or FAILED, so if it is currently marked REMOVE it must have
1366          * previously been ACTIVE. Since we haven't yet run the sync filters
1367          * task, just restore this filter to the ACTIVE state so that the
1368          * sync task leaves it in place
1369          */
1370         if (f->state == I40E_FILTER_REMOVE)
1371                 f->state = I40E_FILTER_ACTIVE;
1372
1373         return f;
1374 }
1375
1376 /**
1377  * __i40e_del_filter - Remove a specific filter from the VSI
1378  * @vsi: VSI to remove from
1379  * @f: the filter to remove from the list
1380  *
1381  * This function should be called instead of i40e_del_filter only if you know
1382  * the exact filter you will remove already, such as via i40e_find_filter or
1383  * i40e_find_mac.
1384  *
1385  * NOTE: This function is expected to be called with mac_filter_hash_lock
1386  * being held.
1387  * ANOTHER NOTE: This function MUST be called from within the context of
1388  * the "safe" variants of any list iterators, e.g. list_for_each_entry_safe()
1389  * instead of list_for_each_entry().
1390  **/
1391 void __i40e_del_filter(struct i40e_vsi *vsi, struct i40e_mac_filter *f)
1392 {
1393         if (!f)
1394                 return;
1395
1396         /* If the filter was never added to firmware then we can just delete it
1397          * directly and we don't want to set the status to remove or else an
1398          * admin queue command will unnecessarily fire.
1399          */
1400         if ((f->state == I40E_FILTER_FAILED) ||
1401             (f->state == I40E_FILTER_NEW)) {
1402                 hash_del(&f->hlist);
1403                 kfree(f);
1404         } else {
1405                 f->state = I40E_FILTER_REMOVE;
1406         }
1407
1408         vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1409         vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1410 }
1411
1412 /**
1413  * i40e_del_filter - Remove a MAC/VLAN filter from the VSI
1414  * @vsi: the VSI to be searched
1415  * @macaddr: the MAC address
1416  * @vlan: the VLAN
1417  *
1418  * NOTE: This function is expected to be called with mac_filter_hash_lock
1419  * being held.
1420  * ANOTHER NOTE: This function MUST be called from within the context of
1421  * the "safe" variants of any list iterators, e.g. list_for_each_entry_safe()
1422  * instead of list_for_each_entry().
1423  **/
1424 void i40e_del_filter(struct i40e_vsi *vsi, const u8 *macaddr, s16 vlan)
1425 {
1426         struct i40e_mac_filter *f;
1427
1428         if (!vsi || !macaddr)
1429                 return;
1430
1431         f = i40e_find_filter(vsi, macaddr, vlan);
1432         __i40e_del_filter(vsi, f);
1433 }
1434
1435 /**
1436  * i40e_add_mac_filter - Add a MAC filter for all active VLANs
1437  * @vsi: the VSI to be searched
1438  * @macaddr: the mac address to be filtered
1439  *
1440  * If we're not in VLAN mode, just add the filter to I40E_VLAN_ANY. Otherwise,
1441  * go through all the macvlan filters and add a macvlan filter for each
1442  * unique vlan that already exists. If a PVID has been assigned, instead only
1443  * add the macaddr to that VLAN.
1444  *
1445  * Returns last filter added on success, else NULL
1446  **/
1447 struct i40e_mac_filter *i40e_add_mac_filter(struct i40e_vsi *vsi,
1448                                             const u8 *macaddr)
1449 {
1450         struct i40e_mac_filter *f, *add = NULL;
1451         struct hlist_node *h;
1452         int bkt;
1453
1454         if (vsi->info.pvid)
1455                 return i40e_add_filter(vsi, macaddr,
1456                                        le16_to_cpu(vsi->info.pvid));
1457
1458         if (!i40e_is_vsi_in_vlan(vsi))
1459                 return i40e_add_filter(vsi, macaddr, I40E_VLAN_ANY);
1460
1461         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
1462                 if (f->state == I40E_FILTER_REMOVE)
1463                         continue;
1464                 add = i40e_add_filter(vsi, macaddr, f->vlan);
1465                 if (!add)
1466                         return NULL;
1467         }
1468
1469         return add;
1470 }
1471
1472 /**
1473  * i40e_del_mac_filter - Remove a MAC filter from all VLANs
1474  * @vsi: the VSI to be searched
1475  * @macaddr: the mac address to be removed
1476  *
1477  * Removes a given MAC address from a VSI regardless of what VLAN it has been
1478  * associated with.
1479  *
1480  * Returns 0 for success, or error
1481  **/
1482 int i40e_del_mac_filter(struct i40e_vsi *vsi, const u8 *macaddr)
1483 {
1484         struct i40e_mac_filter *f;
1485         struct hlist_node *h;
1486         bool found = false;
1487         int bkt;
1488
1489         WARN(!spin_is_locked(&vsi->mac_filter_hash_lock),
1490              "Missing mac_filter_hash_lock\n");
1491         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
1492                 if (ether_addr_equal(macaddr, f->macaddr)) {
1493                         __i40e_del_filter(vsi, f);
1494                         found = true;
1495                 }
1496         }
1497
1498         if (found)
1499                 return 0;
1500         else
1501                 return -ENOENT;
1502 }
1503
1504 /**
1505  * i40e_set_mac - NDO callback to set mac address
1506  * @netdev: network interface device structure
1507  * @p: pointer to an address structure
1508  *
1509  * Returns 0 on success, negative on failure
1510  **/
1511 static int i40e_set_mac(struct net_device *netdev, void *p)
1512 {
1513         struct i40e_netdev_priv *np = netdev_priv(netdev);
1514         struct i40e_vsi *vsi = np->vsi;
1515         struct i40e_pf *pf = vsi->back;
1516         struct i40e_hw *hw = &pf->hw;
1517         struct sockaddr *addr = p;
1518
1519         if (!is_valid_ether_addr(addr->sa_data))
1520                 return -EADDRNOTAVAIL;
1521
1522         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1523                 netdev_info(netdev, "already using mac address %pM\n",
1524                             addr->sa_data);
1525                 return 0;
1526         }
1527
1528         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1529             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1530                 return -EADDRNOTAVAIL;
1531
1532         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1533                 netdev_info(netdev, "returning to hw mac address %pM\n",
1534                             hw->mac.addr);
1535         else
1536                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1537
1538         spin_lock_bh(&vsi->mac_filter_hash_lock);
1539         i40e_del_mac_filter(vsi, netdev->dev_addr);
1540         i40e_add_mac_filter(vsi, addr->sa_data);
1541         spin_unlock_bh(&vsi->mac_filter_hash_lock);
1542         ether_addr_copy(netdev->dev_addr, addr->sa_data);
1543         if (vsi->type == I40E_VSI_MAIN) {
1544                 i40e_status ret;
1545
1546                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1547                                                 I40E_AQC_WRITE_TYPE_LAA_WOL,
1548                                                 addr->sa_data, NULL);
1549                 if (ret)
1550                         netdev_info(netdev, "Ignoring error from firmware on LAA update, status %s, AQ ret %s\n",
1551                                     i40e_stat_str(hw, ret),
1552                                     i40e_aq_str(hw, hw->aq.asq_last_status));
1553         }
1554
1555         /* schedule our worker thread which will take care of
1556          * applying the new filter changes
1557          */
1558         i40e_service_event_schedule(vsi->back);
1559         return 0;
1560 }
1561
1562 /**
1563  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1564  * @vsi: the VSI being setup
1565  * @ctxt: VSI context structure
1566  * @enabled_tc: Enabled TCs bitmap
1567  * @is_add: True if called before Add VSI
1568  *
1569  * Setup VSI queue mapping for enabled traffic classes.
1570  **/
1571 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1572                                      struct i40e_vsi_context *ctxt,
1573                                      u8 enabled_tc,
1574                                      bool is_add)
1575 {
1576         struct i40e_pf *pf = vsi->back;
1577         u16 sections = 0;
1578         u8 netdev_tc = 0;
1579         u16 numtc = 0;
1580         u16 qcount;
1581         u8 offset;
1582         u16 qmap;
1583         int i;
1584         u16 num_tc_qps = 0;
1585
1586         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1587         offset = 0;
1588
1589         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1590                 /* Find numtc from enabled TC bitmap */
1591                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1592                         if (enabled_tc & BIT(i)) /* TC is enabled */
1593                                 numtc++;
1594                 }
1595                 if (!numtc) {
1596                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1597                         numtc = 1;
1598                 }
1599         } else {
1600                 /* At least TC0 is enabled in case of non-DCB case */
1601                 numtc = 1;
1602         }
1603
1604         vsi->tc_config.numtc = numtc;
1605         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1606         /* Number of queues per enabled TC */
1607         qcount = vsi->alloc_queue_pairs;
1608
1609         num_tc_qps = qcount / numtc;
1610         num_tc_qps = min_t(int, num_tc_qps, i40e_pf_get_max_q_per_tc(pf));
1611
1612         /* Setup queue offset/count for all TCs for given VSI */
1613         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1614                 /* See if the given TC is enabled for the given VSI */
1615                 if (vsi->tc_config.enabled_tc & BIT(i)) {
1616                         /* TC is enabled */
1617                         int pow, num_qps;
1618
1619                         switch (vsi->type) {
1620                         case I40E_VSI_MAIN:
1621                                 qcount = min_t(int, pf->alloc_rss_size,
1622                                                num_tc_qps);
1623                                 break;
1624                         case I40E_VSI_FDIR:
1625                         case I40E_VSI_SRIOV:
1626                         case I40E_VSI_VMDQ2:
1627                         default:
1628                                 qcount = num_tc_qps;
1629                                 WARN_ON(i != 0);
1630                                 break;
1631                         }
1632                         vsi->tc_config.tc_info[i].qoffset = offset;
1633                         vsi->tc_config.tc_info[i].qcount = qcount;
1634
1635                         /* find the next higher power-of-2 of num queue pairs */
1636                         num_qps = qcount;
1637                         pow = 0;
1638                         while (num_qps && (BIT_ULL(pow) < qcount)) {
1639                                 pow++;
1640                                 num_qps >>= 1;
1641                         }
1642
1643                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1644                         qmap =
1645                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1646                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1647
1648                         offset += qcount;
1649                 } else {
1650                         /* TC is not enabled so set the offset to
1651                          * default queue and allocate one queue
1652                          * for the given TC.
1653                          */
1654                         vsi->tc_config.tc_info[i].qoffset = 0;
1655                         vsi->tc_config.tc_info[i].qcount = 1;
1656                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1657
1658                         qmap = 0;
1659                 }
1660                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1661         }
1662
1663         /* Set actual Tx/Rx queue pairs */
1664         vsi->num_queue_pairs = offset;
1665         if ((vsi->type == I40E_VSI_MAIN) && (numtc == 1)) {
1666                 if (vsi->req_queue_pairs > 0)
1667                         vsi->num_queue_pairs = vsi->req_queue_pairs;
1668                 else if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1669                         vsi->num_queue_pairs = pf->num_lan_msix;
1670         }
1671
1672         /* Scheduler section valid can only be set for ADD VSI */
1673         if (is_add) {
1674                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1675
1676                 ctxt->info.up_enable_bits = enabled_tc;
1677         }
1678         if (vsi->type == I40E_VSI_SRIOV) {
1679                 ctxt->info.mapping_flags |=
1680                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1681                 for (i = 0; i < vsi->num_queue_pairs; i++)
1682                         ctxt->info.queue_mapping[i] =
1683                                                cpu_to_le16(vsi->base_queue + i);
1684         } else {
1685                 ctxt->info.mapping_flags |=
1686                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1687                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1688         }
1689         ctxt->info.valid_sections |= cpu_to_le16(sections);
1690 }
1691
1692 /**
1693  * i40e_addr_sync - Callback for dev_(mc|uc)_sync to add address
1694  * @netdev: the netdevice
1695  * @addr: address to add
1696  *
1697  * Called by __dev_(mc|uc)_sync when an address needs to be added. We call
1698  * __dev_(uc|mc)_sync from .set_rx_mode and guarantee to hold the hash lock.
1699  */
1700 static int i40e_addr_sync(struct net_device *netdev, const u8 *addr)
1701 {
1702         struct i40e_netdev_priv *np = netdev_priv(netdev);
1703         struct i40e_vsi *vsi = np->vsi;
1704
1705         if (i40e_add_mac_filter(vsi, addr))
1706                 return 0;
1707         else
1708                 return -ENOMEM;
1709 }
1710
1711 /**
1712  * i40e_addr_unsync - Callback for dev_(mc|uc)_sync to remove address
1713  * @netdev: the netdevice
1714  * @addr: address to add
1715  *
1716  * Called by __dev_(mc|uc)_sync when an address needs to be removed. We call
1717  * __dev_(uc|mc)_sync from .set_rx_mode and guarantee to hold the hash lock.
1718  */
1719 static int i40e_addr_unsync(struct net_device *netdev, const u8 *addr)
1720 {
1721         struct i40e_netdev_priv *np = netdev_priv(netdev);
1722         struct i40e_vsi *vsi = np->vsi;
1723
1724         i40e_del_mac_filter(vsi, addr);
1725
1726         return 0;
1727 }
1728
1729 /**
1730  * i40e_set_rx_mode - NDO callback to set the netdev filters
1731  * @netdev: network interface device structure
1732  **/
1733 static void i40e_set_rx_mode(struct net_device *netdev)
1734 {
1735         struct i40e_netdev_priv *np = netdev_priv(netdev);
1736         struct i40e_vsi *vsi = np->vsi;
1737
1738         spin_lock_bh(&vsi->mac_filter_hash_lock);
1739
1740         __dev_uc_sync(netdev, i40e_addr_sync, i40e_addr_unsync);
1741         __dev_mc_sync(netdev, i40e_addr_sync, i40e_addr_unsync);
1742
1743         spin_unlock_bh(&vsi->mac_filter_hash_lock);
1744
1745         /* check for other flag changes */
1746         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1747                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1748                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1749         }
1750
1751         /* schedule our worker thread which will take care of
1752          * applying the new filter changes
1753          */
1754         i40e_service_event_schedule(vsi->back);
1755 }
1756
1757 /**
1758  * i40e_undo_del_filter_entries - Undo the changes made to MAC filter entries
1759  * @vsi: Pointer to VSI struct
1760  * @from: Pointer to list which contains MAC filter entries - changes to
1761  *        those entries needs to be undone.
1762  *
1763  * MAC filter entries from this list were slated for deletion.
1764  **/
1765 static void i40e_undo_del_filter_entries(struct i40e_vsi *vsi,
1766                                          struct hlist_head *from)
1767 {
1768         struct i40e_mac_filter *f;
1769         struct hlist_node *h;
1770
1771         hlist_for_each_entry_safe(f, h, from, hlist) {
1772                 u64 key = i40e_addr_to_hkey(f->macaddr);
1773
1774                 /* Move the element back into MAC filter list*/
1775                 hlist_del(&f->hlist);
1776                 hash_add(vsi->mac_filter_hash, &f->hlist, key);
1777         }
1778 }
1779
1780 /**
1781  * i40e_undo_add_filter_entries - Undo the changes made to MAC filter entries
1782  * @vsi: Pointer to vsi struct
1783  * @from: Pointer to list which contains MAC filter entries - changes to
1784  *        those entries needs to be undone.
1785  *
1786  * MAC filter entries from this list were slated for addition.
1787  **/
1788 static void i40e_undo_add_filter_entries(struct i40e_vsi *vsi,
1789                                          struct hlist_head *from)
1790 {
1791         struct i40e_new_mac_filter *new;
1792         struct hlist_node *h;
1793
1794         hlist_for_each_entry_safe(new, h, from, hlist) {
1795                 /* We can simply free the wrapper structure */
1796                 hlist_del(&new->hlist);
1797                 kfree(new);
1798         }
1799 }
1800
1801 /**
1802  * i40e_next_entry - Get the next non-broadcast filter from a list
1803  * @next: pointer to filter in list
1804  *
1805  * Returns the next non-broadcast filter in the list. Required so that we
1806  * ignore broadcast filters within the list, since these are not handled via
1807  * the normal firmware update path.
1808  */
1809 static
1810 struct i40e_new_mac_filter *i40e_next_filter(struct i40e_new_mac_filter *next)
1811 {
1812         hlist_for_each_entry_continue(next, hlist) {
1813                 if (!is_broadcast_ether_addr(next->f->macaddr))
1814                         return next;
1815         }
1816
1817         return NULL;
1818 }
1819
1820 /**
1821  * i40e_update_filter_state - Update filter state based on return data
1822  * from firmware
1823  * @count: Number of filters added
1824  * @add_list: return data from fw
1825  * @head: pointer to first filter in current batch
1826  *
1827  * MAC filter entries from list were slated to be added to device. Returns
1828  * number of successful filters. Note that 0 does NOT mean success!
1829  **/
1830 static int
1831 i40e_update_filter_state(int count,
1832                          struct i40e_aqc_add_macvlan_element_data *add_list,
1833                          struct i40e_new_mac_filter *add_head)
1834 {
1835         int retval = 0;
1836         int i;
1837
1838         for (i = 0; i < count; i++) {
1839                 /* Always check status of each filter. We don't need to check
1840                  * the firmware return status because we pre-set the filter
1841                  * status to I40E_AQC_MM_ERR_NO_RES when sending the filter
1842                  * request to the adminq. Thus, if it no longer matches then
1843                  * we know the filter is active.
1844                  */
1845                 if (add_list[i].match_method == I40E_AQC_MM_ERR_NO_RES) {
1846                         add_head->state = I40E_FILTER_FAILED;
1847                 } else {
1848                         add_head->state = I40E_FILTER_ACTIVE;
1849                         retval++;
1850                 }
1851
1852                 add_head = i40e_next_filter(add_head);
1853                 if (!add_head)
1854                         break;
1855         }
1856
1857         return retval;
1858 }
1859
1860 /**
1861  * i40e_aqc_del_filters - Request firmware to delete a set of filters
1862  * @vsi: ptr to the VSI
1863  * @vsi_name: name to display in messages
1864  * @list: the list of filters to send to firmware
1865  * @num_del: the number of filters to delete
1866  * @retval: Set to -EIO on failure to delete
1867  *
1868  * Send a request to firmware via AdminQ to delete a set of filters. Uses
1869  * *retval instead of a return value so that success does not force ret_val to
1870  * be set to 0. This ensures that a sequence of calls to this function
1871  * preserve the previous value of *retval on successful delete.
1872  */
1873 static
1874 void i40e_aqc_del_filters(struct i40e_vsi *vsi, const char *vsi_name,
1875                           struct i40e_aqc_remove_macvlan_element_data *list,
1876                           int num_del, int *retval)
1877 {
1878         struct i40e_hw *hw = &vsi->back->hw;
1879         i40e_status aq_ret;
1880         int aq_err;
1881
1882         aq_ret = i40e_aq_remove_macvlan(hw, vsi->seid, list, num_del, NULL);
1883         aq_err = hw->aq.asq_last_status;
1884
1885         /* Explicitly ignore and do not report when firmware returns ENOENT */
1886         if (aq_ret && !(aq_err == I40E_AQ_RC_ENOENT)) {
1887                 *retval = -EIO;
1888                 dev_info(&vsi->back->pdev->dev,
1889                          "ignoring delete macvlan error on %s, err %s, aq_err %s\n",
1890                          vsi_name, i40e_stat_str(hw, aq_ret),
1891                          i40e_aq_str(hw, aq_err));
1892         }
1893 }
1894
1895 /**
1896  * i40e_aqc_add_filters - Request firmware to add a set of filters
1897  * @vsi: ptr to the VSI
1898  * @vsi_name: name to display in messages
1899  * @list: the list of filters to send to firmware
1900  * @add_head: Position in the add hlist
1901  * @num_add: the number of filters to add
1902  * @promisc_change: set to true on exit if promiscuous mode was forced on
1903  *
1904  * Send a request to firmware via AdminQ to add a chunk of filters. Will set
1905  * promisc_changed to true if the firmware has run out of space for more
1906  * filters.
1907  */
1908 static
1909 void i40e_aqc_add_filters(struct i40e_vsi *vsi, const char *vsi_name,
1910                           struct i40e_aqc_add_macvlan_element_data *list,
1911                           struct i40e_new_mac_filter *add_head,
1912                           int num_add, bool *promisc_changed)
1913 {
1914         struct i40e_hw *hw = &vsi->back->hw;
1915         int aq_err, fcnt;
1916
1917         i40e_aq_add_macvlan(hw, vsi->seid, list, num_add, NULL);
1918         aq_err = hw->aq.asq_last_status;
1919         fcnt = i40e_update_filter_state(num_add, list, add_head);
1920
1921         if (fcnt != num_add) {
1922                 *promisc_changed = true;
1923                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state);
1924                 dev_warn(&vsi->back->pdev->dev,
1925                          "Error %s adding RX filters on %s, promiscuous mode forced on\n",
1926                          i40e_aq_str(hw, aq_err),
1927                          vsi_name);
1928         }
1929 }
1930
1931 /**
1932  * i40e_aqc_broadcast_filter - Set promiscuous broadcast flags
1933  * @vsi: pointer to the VSI
1934  * @f: filter data
1935  *
1936  * This function sets or clears the promiscuous broadcast flags for VLAN
1937  * filters in order to properly receive broadcast frames. Assumes that only
1938  * broadcast filters are passed.
1939  *
1940  * Returns status indicating success or failure;
1941  **/
1942 static i40e_status
1943 i40e_aqc_broadcast_filter(struct i40e_vsi *vsi, const char *vsi_name,
1944                           struct i40e_mac_filter *f)
1945 {
1946         bool enable = f->state == I40E_FILTER_NEW;
1947         struct i40e_hw *hw = &vsi->back->hw;
1948         i40e_status aq_ret;
1949
1950         if (f->vlan == I40E_VLAN_ANY) {
1951                 aq_ret = i40e_aq_set_vsi_broadcast(hw,
1952                                                    vsi->seid,
1953                                                    enable,
1954                                                    NULL);
1955         } else {
1956                 aq_ret = i40e_aq_set_vsi_bc_promisc_on_vlan(hw,
1957                                                             vsi->seid,
1958                                                             enable,
1959                                                             f->vlan,
1960                                                             NULL);
1961         }
1962
1963         if (aq_ret)
1964                 dev_warn(&vsi->back->pdev->dev,
1965                          "Error %s setting broadcast promiscuous mode on %s\n",
1966                          i40e_aq_str(hw, hw->aq.asq_last_status),
1967                          vsi_name);
1968
1969         return aq_ret;
1970 }
1971
1972 /**
1973  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1974  * @vsi: ptr to the VSI
1975  *
1976  * Push any outstanding VSI filter changes through the AdminQ.
1977  *
1978  * Returns 0 or error value
1979  **/
1980 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
1981 {
1982         struct hlist_head tmp_add_list, tmp_del_list;
1983         struct i40e_mac_filter *f;
1984         struct i40e_new_mac_filter *new, *add_head = NULL;
1985         struct i40e_hw *hw = &vsi->back->hw;
1986         unsigned int failed_filters = 0;
1987         unsigned int vlan_filters = 0;
1988         bool promisc_changed = false;
1989         char vsi_name[16] = "PF";
1990         int filter_list_len = 0;
1991         i40e_status aq_ret = 0;
1992         u32 changed_flags = 0;
1993         struct hlist_node *h;
1994         struct i40e_pf *pf;
1995         int num_add = 0;
1996         int num_del = 0;
1997         int retval = 0;
1998         u16 cmd_flags;
1999         int list_size;
2000         int bkt;
2001
2002         /* empty array typed pointers, kcalloc later */
2003         struct i40e_aqc_add_macvlan_element_data *add_list;
2004         struct i40e_aqc_remove_macvlan_element_data *del_list;
2005
2006         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
2007                 usleep_range(1000, 2000);
2008         pf = vsi->back;
2009
2010         if (vsi->netdev) {
2011                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
2012                 vsi->current_netdev_flags = vsi->netdev->flags;
2013         }
2014
2015         INIT_HLIST_HEAD(&tmp_add_list);
2016         INIT_HLIST_HEAD(&tmp_del_list);
2017
2018         if (vsi->type == I40E_VSI_SRIOV)
2019                 snprintf(vsi_name, sizeof(vsi_name) - 1, "VF %d", vsi->vf_id);
2020         else if (vsi->type != I40E_VSI_MAIN)
2021                 snprintf(vsi_name, sizeof(vsi_name) - 1, "vsi %d", vsi->seid);
2022
2023         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
2024                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
2025
2026                 spin_lock_bh(&vsi->mac_filter_hash_lock);
2027                 /* Create a list of filters to delete. */
2028                 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
2029                         if (f->state == I40E_FILTER_REMOVE) {
2030                                 /* Move the element into temporary del_list */
2031                                 hash_del(&f->hlist);
2032                                 hlist_add_head(&f->hlist, &tmp_del_list);
2033
2034                                 /* Avoid counting removed filters */
2035                                 continue;
2036                         }
2037                         if (f->state == I40E_FILTER_NEW) {
2038                                 /* Create a temporary i40e_new_mac_filter */
2039                                 new = kzalloc(sizeof(*new), GFP_ATOMIC);
2040                                 if (!new)
2041                                         goto err_no_memory_locked;
2042
2043                                 /* Store pointer to the real filter */
2044                                 new->f = f;
2045                                 new->state = f->state;
2046
2047                                 /* Add it to the hash list */
2048                                 hlist_add_head(&new->hlist, &tmp_add_list);
2049                         }
2050
2051                         /* Count the number of active (current and new) VLAN
2052                          * filters we have now. Does not count filters which
2053                          * are marked for deletion.
2054                          */
2055                         if (f->vlan > 0)
2056                                 vlan_filters++;
2057                 }
2058
2059                 retval = i40e_correct_mac_vlan_filters(vsi,
2060                                                        &tmp_add_list,
2061                                                        &tmp_del_list,
2062                                                        vlan_filters);
2063                 if (retval)
2064                         goto err_no_memory_locked;
2065
2066                 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2067         }
2068
2069         /* Now process 'del_list' outside the lock */
2070         if (!hlist_empty(&tmp_del_list)) {
2071                 filter_list_len = hw->aq.asq_buf_size /
2072                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
2073                 list_size = filter_list_len *
2074                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
2075                 del_list = kzalloc(list_size, GFP_ATOMIC);
2076                 if (!del_list)
2077                         goto err_no_memory;
2078
2079                 hlist_for_each_entry_safe(f, h, &tmp_del_list, hlist) {
2080                         cmd_flags = 0;
2081
2082                         /* handle broadcast filters by updating the broadcast
2083                          * promiscuous flag and release filter list.
2084                          */
2085                         if (is_broadcast_ether_addr(f->macaddr)) {
2086                                 i40e_aqc_broadcast_filter(vsi, vsi_name, f);
2087
2088                                 hlist_del(&f->hlist);
2089                                 kfree(f);
2090                                 continue;
2091                         }
2092
2093                         /* add to delete list */
2094                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
2095                         if (f->vlan == I40E_VLAN_ANY) {
2096                                 del_list[num_del].vlan_tag = 0;
2097                                 cmd_flags |= I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
2098                         } else {
2099                                 del_list[num_del].vlan_tag =
2100                                         cpu_to_le16((u16)(f->vlan));
2101                         }
2102
2103                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
2104                         del_list[num_del].flags = cmd_flags;
2105                         num_del++;
2106
2107                         /* flush a full buffer */
2108                         if (num_del == filter_list_len) {
2109                                 i40e_aqc_del_filters(vsi, vsi_name, del_list,
2110                                                      num_del, &retval);
2111                                 memset(del_list, 0, list_size);
2112                                 num_del = 0;
2113                         }
2114                         /* Release memory for MAC filter entries which were
2115                          * synced up with HW.
2116                          */
2117                         hlist_del(&f->hlist);
2118                         kfree(f);
2119                 }
2120
2121                 if (num_del) {
2122                         i40e_aqc_del_filters(vsi, vsi_name, del_list,
2123                                              num_del, &retval);
2124                 }
2125
2126                 kfree(del_list);
2127                 del_list = NULL;
2128         }
2129
2130         if (!hlist_empty(&tmp_add_list)) {
2131                 /* Do all the adds now. */
2132                 filter_list_len = hw->aq.asq_buf_size /
2133                                sizeof(struct i40e_aqc_add_macvlan_element_data);
2134                 list_size = filter_list_len *
2135                                sizeof(struct i40e_aqc_add_macvlan_element_data);
2136                 add_list = kzalloc(list_size, GFP_ATOMIC);
2137                 if (!add_list)
2138                         goto err_no_memory;
2139
2140                 num_add = 0;
2141                 hlist_for_each_entry_safe(new, h, &tmp_add_list, hlist) {
2142                         if (test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2143                                      &vsi->state)) {
2144                                 new->state = I40E_FILTER_FAILED;
2145                                 continue;
2146                         }
2147
2148                         /* handle broadcast filters by updating the broadcast
2149                          * promiscuous flag instead of adding a MAC filter.
2150                          */
2151                         if (is_broadcast_ether_addr(new->f->macaddr)) {
2152                                 if (i40e_aqc_broadcast_filter(vsi, vsi_name,
2153                                                               new->f))
2154                                         new->state = I40E_FILTER_FAILED;
2155                                 else
2156                                         new->state = I40E_FILTER_ACTIVE;
2157                                 continue;
2158                         }
2159
2160                         /* add to add array */
2161                         if (num_add == 0)
2162                                 add_head = new;
2163                         cmd_flags = 0;
2164                         ether_addr_copy(add_list[num_add].mac_addr,
2165                                         new->f->macaddr);
2166                         if (new->f->vlan == I40E_VLAN_ANY) {
2167                                 add_list[num_add].vlan_tag = 0;
2168                                 cmd_flags |= I40E_AQC_MACVLAN_ADD_IGNORE_VLAN;
2169                         } else {
2170                                 add_list[num_add].vlan_tag =
2171                                         cpu_to_le16((u16)(new->f->vlan));
2172                         }
2173                         add_list[num_add].queue_number = 0;
2174                         /* set invalid match method for later detection */
2175                         add_list[num_add].match_method = I40E_AQC_MM_ERR_NO_RES;
2176                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
2177                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
2178                         num_add++;
2179
2180                         /* flush a full buffer */
2181                         if (num_add == filter_list_len) {
2182                                 i40e_aqc_add_filters(vsi, vsi_name, add_list,
2183                                                      add_head, num_add,
2184                                                      &promisc_changed);
2185                                 memset(add_list, 0, list_size);
2186                                 num_add = 0;
2187                         }
2188                 }
2189                 if (num_add) {
2190                         i40e_aqc_add_filters(vsi, vsi_name, add_list, add_head,
2191                                              num_add, &promisc_changed);
2192                 }
2193                 /* Now move all of the filters from the temp add list back to
2194                  * the VSI's list.
2195                  */
2196                 spin_lock_bh(&vsi->mac_filter_hash_lock);
2197                 hlist_for_each_entry_safe(new, h, &tmp_add_list, hlist) {
2198                         /* Only update the state if we're still NEW */
2199                         if (new->f->state == I40E_FILTER_NEW)
2200                                 new->f->state = new->state;
2201                         hlist_del(&new->hlist);
2202                         kfree(new);
2203                 }
2204                 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2205                 kfree(add_list);
2206                 add_list = NULL;
2207         }
2208
2209         /* Determine the number of active and failed filters. */
2210         spin_lock_bh(&vsi->mac_filter_hash_lock);
2211         vsi->active_filters = 0;
2212         hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) {
2213                 if (f->state == I40E_FILTER_ACTIVE)
2214                         vsi->active_filters++;
2215                 else if (f->state == I40E_FILTER_FAILED)
2216                         failed_filters++;
2217         }
2218         spin_unlock_bh(&vsi->mac_filter_hash_lock);
2219
2220         /* If promiscuous mode has changed, we need to calculate a new
2221          * threshold for when we are safe to exit
2222          */
2223         if (promisc_changed)
2224                 vsi->promisc_threshold = (vsi->active_filters * 3) / 4;
2225
2226         /* Check if we are able to exit overflow promiscuous mode. We can
2227          * safely exit if we didn't just enter, we no longer have any failed
2228          * filters, and we have reduced filters below the threshold value.
2229          */
2230         if (test_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state) &&
2231             !promisc_changed && !failed_filters &&
2232             (vsi->active_filters < vsi->promisc_threshold)) {
2233                 dev_info(&pf->pdev->dev,
2234                          "filter logjam cleared on %s, leaving overflow promiscuous mode\n",
2235                          vsi_name);
2236                 clear_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state);
2237                 promisc_changed = true;
2238                 vsi->promisc_threshold = 0;
2239         }
2240
2241         /* if the VF is not trusted do not do promisc */
2242         if ((vsi->type == I40E_VSI_SRIOV) && !pf->vf[vsi->vf_id].trusted) {
2243                 clear_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state);
2244                 goto out;
2245         }
2246
2247         /* check for changes in promiscuous modes */
2248         if (changed_flags & IFF_ALLMULTI) {
2249                 bool cur_multipromisc;
2250
2251                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
2252                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
2253                                                                vsi->seid,
2254                                                                cur_multipromisc,
2255                                                                NULL);
2256                 if (aq_ret) {
2257                         retval = i40e_aq_rc_to_posix(aq_ret,
2258                                                      hw->aq.asq_last_status);
2259                         dev_info(&pf->pdev->dev,
2260                                  "set multi promisc failed on %s, err %s aq_err %s\n",
2261                                  vsi_name,
2262                                  i40e_stat_str(hw, aq_ret),
2263                                  i40e_aq_str(hw, hw->aq.asq_last_status));
2264                 }
2265         }
2266         if ((changed_flags & IFF_PROMISC) ||
2267             (promisc_changed &&
2268              test_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state))) {
2269                 bool cur_promisc;
2270
2271                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
2272                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2273                                         &vsi->state));
2274                 if ((vsi->type == I40E_VSI_MAIN) &&
2275                     (pf->lan_veb != I40E_NO_VEB) &&
2276                     !(pf->flags & I40E_FLAG_MFP_ENABLED)) {
2277                         /* set defport ON for Main VSI instead of true promisc
2278                          * this way we will get all unicast/multicast and VLAN
2279                          * promisc behavior but will not get VF or VMDq traffic
2280                          * replicated on the Main VSI.
2281                          */
2282                         if (pf->cur_promisc != cur_promisc) {
2283                                 pf->cur_promisc = cur_promisc;
2284                                 if (cur_promisc)
2285                                         aq_ret =
2286                                               i40e_aq_set_default_vsi(hw,
2287                                                                       vsi->seid,
2288                                                                       NULL);
2289                                 else
2290                                         aq_ret =
2291                                             i40e_aq_clear_default_vsi(hw,
2292                                                                       vsi->seid,
2293                                                                       NULL);
2294                                 if (aq_ret) {
2295                                         retval = i40e_aq_rc_to_posix(aq_ret,
2296                                                         hw->aq.asq_last_status);
2297                                         dev_info(&pf->pdev->dev,
2298                                                  "Set default VSI failed on %s, err %s, aq_err %s\n",
2299                                                  vsi_name,
2300                                                  i40e_stat_str(hw, aq_ret),
2301                                                  i40e_aq_str(hw,
2302                                                      hw->aq.asq_last_status));
2303                                 }
2304                         }
2305                 } else {
2306                         aq_ret = i40e_aq_set_vsi_unicast_promiscuous(
2307                                                           hw,
2308                                                           vsi->seid,
2309                                                           cur_promisc, NULL,
2310                                                           true);
2311                         if (aq_ret) {
2312                                 retval =
2313                                 i40e_aq_rc_to_posix(aq_ret,
2314                                                     hw->aq.asq_last_status);
2315                                 dev_info(&pf->pdev->dev,
2316                                          "set unicast promisc failed on %s, err %s, aq_err %s\n",
2317                                          vsi_name,
2318                                          i40e_stat_str(hw, aq_ret),
2319                                          i40e_aq_str(hw,
2320                                                      hw->aq.asq_last_status));
2321                         }
2322                         aq_ret = i40e_aq_set_vsi_multicast_promiscuous(
2323                                                           hw,
2324                                                           vsi->seid,
2325                                                           cur_promisc, NULL);
2326                         if (aq_ret) {
2327                                 retval =
2328                                 i40e_aq_rc_to_posix(aq_ret,
2329                                                     hw->aq.asq_last_status);
2330                                 dev_info(&pf->pdev->dev,
2331                                          "set multicast promisc failed on %s, err %s, aq_err %s\n",
2332                                          vsi_name,
2333                                          i40e_stat_str(hw, aq_ret),
2334                                          i40e_aq_str(hw,
2335                                                      hw->aq.asq_last_status));
2336                         }
2337                 }
2338                 aq_ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
2339                                                    vsi->seid,
2340                                                    cur_promisc, NULL);
2341                 if (aq_ret) {
2342                         retval = i40e_aq_rc_to_posix(aq_ret,
2343                                                      pf->hw.aq.asq_last_status);
2344                         dev_info(&pf->pdev->dev,
2345                                  "set brdcast promisc failed, err %s, aq_err %s\n",
2346                                          i40e_stat_str(hw, aq_ret),
2347                                          i40e_aq_str(hw,
2348                                                      hw->aq.asq_last_status));
2349                 }
2350         }
2351 out:
2352         /* if something went wrong then set the changed flag so we try again */
2353         if (retval)
2354                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
2355
2356         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
2357         return retval;
2358
2359 err_no_memory:
2360         /* Restore elements on the temporary add and delete lists */
2361         spin_lock_bh(&vsi->mac_filter_hash_lock);
2362 err_no_memory_locked:
2363         i40e_undo_del_filter_entries(vsi, &tmp_del_list);
2364         i40e_undo_add_filter_entries(vsi, &tmp_add_list);
2365         spin_unlock_bh(&vsi->mac_filter_hash_lock);
2366
2367         vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
2368         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
2369         return -ENOMEM;
2370 }
2371
2372 /**
2373  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
2374  * @pf: board private structure
2375  **/
2376 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
2377 {
2378         int v;
2379
2380         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
2381                 return;
2382         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
2383
2384         for (v = 0; v < pf->num_alloc_vsi; v++) {
2385                 if (pf->vsi[v] &&
2386                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED)) {
2387                         int ret = i40e_sync_vsi_filters(pf->vsi[v]);
2388
2389                         if (ret) {
2390                                 /* come back and try again later */
2391                                 pf->flags |= I40E_FLAG_FILTER_SYNC;
2392                                 break;
2393                         }
2394                 }
2395         }
2396 }
2397
2398 /**
2399  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
2400  * @netdev: network interface device structure
2401  * @new_mtu: new value for maximum frame size
2402  *
2403  * Returns 0 on success, negative on failure
2404  **/
2405 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
2406 {
2407         struct i40e_netdev_priv *np = netdev_priv(netdev);
2408         struct i40e_vsi *vsi = np->vsi;
2409         struct i40e_pf *pf = vsi->back;
2410
2411         netdev_info(netdev, "changing MTU from %d to %d\n",
2412                     netdev->mtu, new_mtu);
2413         netdev->mtu = new_mtu;
2414         if (netif_running(netdev))
2415                 i40e_vsi_reinit_locked(vsi);
2416         pf->flags |= (I40E_FLAG_SERVICE_CLIENT_REQUESTED |
2417                       I40E_FLAG_CLIENT_L2_CHANGE);
2418         return 0;
2419 }
2420
2421 /**
2422  * i40e_ioctl - Access the hwtstamp interface
2423  * @netdev: network interface device structure
2424  * @ifr: interface request data
2425  * @cmd: ioctl command
2426  **/
2427 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2428 {
2429         struct i40e_netdev_priv *np = netdev_priv(netdev);
2430         struct i40e_pf *pf = np->vsi->back;
2431
2432         switch (cmd) {
2433         case SIOCGHWTSTAMP:
2434                 return i40e_ptp_get_ts_config(pf, ifr);
2435         case SIOCSHWTSTAMP:
2436                 return i40e_ptp_set_ts_config(pf, ifr);
2437         default:
2438                 return -EOPNOTSUPP;
2439         }
2440 }
2441
2442 /**
2443  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
2444  * @vsi: the vsi being adjusted
2445  **/
2446 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
2447 {
2448         struct i40e_vsi_context ctxt;
2449         i40e_status ret;
2450
2451         if ((vsi->info.valid_sections &
2452              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2453             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
2454                 return;  /* already enabled */
2455
2456         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2457         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2458                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
2459
2460         ctxt.seid = vsi->seid;
2461         ctxt.info = vsi->info;
2462         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2463         if (ret) {
2464                 dev_info(&vsi->back->pdev->dev,
2465                          "update vlan stripping failed, err %s aq_err %s\n",
2466                          i40e_stat_str(&vsi->back->hw, ret),
2467                          i40e_aq_str(&vsi->back->hw,
2468                                      vsi->back->hw.aq.asq_last_status));
2469         }
2470 }
2471
2472 /**
2473  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
2474  * @vsi: the vsi being adjusted
2475  **/
2476 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
2477 {
2478         struct i40e_vsi_context ctxt;
2479         i40e_status ret;
2480
2481         if ((vsi->info.valid_sections &
2482              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2483             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
2484              I40E_AQ_VSI_PVLAN_EMOD_MASK))
2485                 return;  /* already disabled */
2486
2487         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2488         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2489                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
2490
2491         ctxt.seid = vsi->seid;
2492         ctxt.info = vsi->info;
2493         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2494         if (ret) {
2495                 dev_info(&vsi->back->pdev->dev,
2496                          "update vlan stripping failed, err %s aq_err %s\n",
2497                          i40e_stat_str(&vsi->back->hw, ret),
2498                          i40e_aq_str(&vsi->back->hw,
2499                                      vsi->back->hw.aq.asq_last_status));
2500         }
2501 }
2502
2503 /**
2504  * i40e_vlan_rx_register - Setup or shutdown vlan offload
2505  * @netdev: network interface to be adjusted
2506  * @features: netdev features to test if VLAN offload is enabled or not
2507  **/
2508 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
2509 {
2510         struct i40e_netdev_priv *np = netdev_priv(netdev);
2511         struct i40e_vsi *vsi = np->vsi;
2512
2513         if (features & NETIF_F_HW_VLAN_CTAG_RX)
2514                 i40e_vlan_stripping_enable(vsi);
2515         else
2516                 i40e_vlan_stripping_disable(vsi);
2517 }
2518
2519 /**
2520  * i40e_add_vlan_all_mac - Add a MAC/VLAN filter for each existing MAC address
2521  * @vsi: the vsi being configured
2522  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2523  *
2524  * This is a helper function for adding a new MAC/VLAN filter with the
2525  * specified VLAN for each existing MAC address already in the hash table.
2526  * This function does *not* perform any accounting to update filters based on
2527  * VLAN mode.
2528  *
2529  * NOTE: this function expects to be called while under the
2530  * mac_filter_hash_lock
2531  **/
2532 int i40e_add_vlan_all_mac(struct i40e_vsi *vsi, s16 vid)
2533 {
2534         struct i40e_mac_filter *f, *add_f;
2535         struct hlist_node *h;
2536         int bkt;
2537
2538         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
2539                 if (f->state == I40E_FILTER_REMOVE)
2540                         continue;
2541                 add_f = i40e_add_filter(vsi, f->macaddr, vid);
2542                 if (!add_f) {
2543                         dev_info(&vsi->back->pdev->dev,
2544                                  "Could not add vlan filter %d for %pM\n",
2545                                  vid, f->macaddr);
2546                         return -ENOMEM;
2547                 }
2548         }
2549
2550         return 0;
2551 }
2552
2553 /**
2554  * i40e_vsi_add_vlan - Add VSI membership for given VLAN
2555  * @vsi: the VSI being configured
2556  * @vid: VLAN id to be added
2557  **/
2558 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, u16 vid)
2559 {
2560         int err;
2561
2562         if (!vid || vsi->info.pvid)
2563                 return -EINVAL;
2564
2565         /* Locked once because all functions invoked below iterates list*/
2566         spin_lock_bh(&vsi->mac_filter_hash_lock);
2567         err = i40e_add_vlan_all_mac(vsi, vid);
2568         spin_unlock_bh(&vsi->mac_filter_hash_lock);
2569         if (err)
2570                 return err;
2571
2572         /* schedule our worker thread which will take care of
2573          * applying the new filter changes
2574          */
2575         i40e_service_event_schedule(vsi->back);
2576         return 0;
2577 }
2578
2579 /**
2580  * i40e_rm_vlan_all_mac - Remove MAC/VLAN pair for all MAC with the given VLAN
2581  * @vsi: the vsi being configured
2582  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2583  *
2584  * This function should be used to remove all VLAN filters which match the
2585  * given VID. It does not schedule the service event and does not take the
2586  * mac_filter_hash_lock so it may be combined with other operations under
2587  * a single invocation of the mac_filter_hash_lock.
2588  *
2589  * NOTE: this function expects to be called while under the
2590  * mac_filter_hash_lock
2591  */
2592 void i40e_rm_vlan_all_mac(struct i40e_vsi *vsi, s16 vid)
2593 {
2594         struct i40e_mac_filter *f;
2595         struct hlist_node *h;
2596         int bkt;
2597
2598         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
2599                 if (f->vlan == vid)
2600                         __i40e_del_filter(vsi, f);
2601         }
2602 }
2603
2604 /**
2605  * i40e_vsi_kill_vlan - Remove VSI membership for given VLAN
2606  * @vsi: the VSI being configured
2607  * @vid: VLAN id to be removed
2608  **/
2609 void i40e_vsi_kill_vlan(struct i40e_vsi *vsi, u16 vid)
2610 {
2611         if (!vid || vsi->info.pvid)
2612                 return;
2613
2614         spin_lock_bh(&vsi->mac_filter_hash_lock);
2615         i40e_rm_vlan_all_mac(vsi, vid);
2616         spin_unlock_bh(&vsi->mac_filter_hash_lock);
2617
2618         /* schedule our worker thread which will take care of
2619          * applying the new filter changes
2620          */
2621         i40e_service_event_schedule(vsi->back);
2622 }
2623
2624 /**
2625  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2626  * @netdev: network interface to be adjusted
2627  * @vid: vlan id to be added
2628  *
2629  * net_device_ops implementation for adding vlan ids
2630  **/
2631 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2632                                 __always_unused __be16 proto, u16 vid)
2633 {
2634         struct i40e_netdev_priv *np = netdev_priv(netdev);
2635         struct i40e_vsi *vsi = np->vsi;
2636         int ret = 0;
2637
2638         if (vid >= VLAN_N_VID)
2639                 return -EINVAL;
2640
2641         /* If the network stack called us with vid = 0 then
2642          * it is asking to receive priority tagged packets with
2643          * vlan id 0.  Our HW receives them by default when configured
2644          * to receive untagged packets so there is no need to add an
2645          * extra filter for vlan 0 tagged packets.
2646          */
2647         if (vid)
2648                 ret = i40e_vsi_add_vlan(vsi, vid);
2649
2650         if (!ret)
2651                 set_bit(vid, vsi->active_vlans);
2652
2653         return ret;
2654 }
2655
2656 /**
2657  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2658  * @netdev: network interface to be adjusted
2659  * @vid: vlan id to be removed
2660  *
2661  * net_device_ops implementation for removing vlan ids
2662  **/
2663 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2664                                  __always_unused __be16 proto, u16 vid)
2665 {
2666         struct i40e_netdev_priv *np = netdev_priv(netdev);
2667         struct i40e_vsi *vsi = np->vsi;
2668
2669         /* return code is ignored as there is nothing a user
2670          * can do about failure to remove and a log message was
2671          * already printed from the other function
2672          */
2673         i40e_vsi_kill_vlan(vsi, vid);
2674
2675         clear_bit(vid, vsi->active_vlans);
2676
2677         return 0;
2678 }
2679
2680 /**
2681  * i40e_macaddr_init - explicitly write the mac address filters
2682  *
2683  * @vsi: pointer to the vsi
2684  * @macaddr: the MAC address
2685  *
2686  * This is needed when the macaddr has been obtained by other
2687  * means than the default, e.g., from Open Firmware or IDPROM.
2688  * Returns 0 on success, negative on failure
2689  **/
2690 static int i40e_macaddr_init(struct i40e_vsi *vsi, u8 *macaddr)
2691 {
2692         int ret;
2693         struct i40e_aqc_add_macvlan_element_data element;
2694
2695         ret = i40e_aq_mac_address_write(&vsi->back->hw,
2696                                         I40E_AQC_WRITE_TYPE_LAA_WOL,
2697                                         macaddr, NULL);
2698         if (ret) {
2699                 dev_info(&vsi->back->pdev->dev,
2700                          "Addr change for VSI failed: %d\n", ret);
2701                 return -EADDRNOTAVAIL;
2702         }
2703
2704         memset(&element, 0, sizeof(element));
2705         ether_addr_copy(element.mac_addr, macaddr);
2706         element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
2707         ret = i40e_aq_add_macvlan(&vsi->back->hw, vsi->seid, &element, 1, NULL);
2708         if (ret) {
2709                 dev_info(&vsi->back->pdev->dev,
2710                          "add filter failed err %s aq_err %s\n",
2711                          i40e_stat_str(&vsi->back->hw, ret),
2712                          i40e_aq_str(&vsi->back->hw,
2713                                      vsi->back->hw.aq.asq_last_status));
2714         }
2715         return ret;
2716 }
2717
2718 /**
2719  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2720  * @vsi: the vsi being brought back up
2721  **/
2722 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2723 {
2724         u16 vid;
2725
2726         if (!vsi->netdev)
2727                 return;
2728
2729         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2730
2731         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2732                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2733                                      vid);
2734 }
2735
2736 /**
2737  * i40e_vsi_add_pvid - Add pvid for the VSI
2738  * @vsi: the vsi being adjusted
2739  * @vid: the vlan id to set as a PVID
2740  **/
2741 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2742 {
2743         struct i40e_vsi_context ctxt;
2744         i40e_status ret;
2745
2746         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2747         vsi->info.pvid = cpu_to_le16(vid);
2748         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2749                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2750                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2751
2752         ctxt.seid = vsi->seid;
2753         ctxt.info = vsi->info;
2754         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2755         if (ret) {
2756                 dev_info(&vsi->back->pdev->dev,
2757                          "add pvid failed, err %s aq_err %s\n",
2758                          i40e_stat_str(&vsi->back->hw, ret),
2759                          i40e_aq_str(&vsi->back->hw,
2760                                      vsi->back->hw.aq.asq_last_status));
2761                 return -ENOENT;
2762         }
2763
2764         return 0;
2765 }
2766
2767 /**
2768  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2769  * @vsi: the vsi being adjusted
2770  *
2771  * Just use the vlan_rx_register() service to put it back to normal
2772  **/
2773 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2774 {
2775         i40e_vlan_stripping_disable(vsi);
2776
2777         vsi->info.pvid = 0;
2778 }
2779
2780 /**
2781  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2782  * @vsi: ptr to the VSI
2783  *
2784  * If this function returns with an error, then it's possible one or
2785  * more of the rings is populated (while the rest are not).  It is the
2786  * callers duty to clean those orphaned rings.
2787  *
2788  * Return 0 on success, negative on failure
2789  **/
2790 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2791 {
2792         int i, err = 0;
2793
2794         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2795                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2796
2797         return err;
2798 }
2799
2800 /**
2801  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2802  * @vsi: ptr to the VSI
2803  *
2804  * Free VSI's transmit software resources
2805  **/
2806 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2807 {
2808         int i;
2809
2810         if (!vsi->tx_rings)
2811                 return;
2812
2813         for (i = 0; i < vsi->num_queue_pairs; i++)
2814                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2815                         i40e_free_tx_resources(vsi->tx_rings[i]);
2816 }
2817
2818 /**
2819  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2820  * @vsi: ptr to the VSI
2821  *
2822  * If this function returns with an error, then it's possible one or
2823  * more of the rings is populated (while the rest are not).  It is the
2824  * callers duty to clean those orphaned rings.
2825  *
2826  * Return 0 on success, negative on failure
2827  **/
2828 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2829 {
2830         int i, err = 0;
2831
2832         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2833                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2834         return err;
2835 }
2836
2837 /**
2838  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2839  * @vsi: ptr to the VSI
2840  *
2841  * Free all receive software resources
2842  **/
2843 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2844 {
2845         int i;
2846
2847         if (!vsi->rx_rings)
2848                 return;
2849
2850         for (i = 0; i < vsi->num_queue_pairs; i++)
2851                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2852                         i40e_free_rx_resources(vsi->rx_rings[i]);
2853 }
2854
2855 /**
2856  * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
2857  * @ring: The Tx ring to configure
2858  *
2859  * This enables/disables XPS for a given Tx descriptor ring
2860  * based on the TCs enabled for the VSI that ring belongs to.
2861  **/
2862 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
2863 {
2864         struct i40e_vsi *vsi = ring->vsi;
2865         cpumask_var_t mask;
2866
2867         if (!ring->q_vector || !ring->netdev)
2868                 return;
2869
2870         /* Single TC mode enable XPS */
2871         if (vsi->tc_config.numtc <= 1) {
2872                 if (!test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2873                         netif_set_xps_queue(ring->netdev,
2874                                             &ring->q_vector->affinity_mask,
2875                                             ring->queue_index);
2876         } else if (alloc_cpumask_var(&mask, GFP_KERNEL)) {
2877                 /* Disable XPS to allow selection based on TC */
2878                 bitmap_zero(cpumask_bits(mask), nr_cpumask_bits);
2879                 netif_set_xps_queue(ring->netdev, mask, ring->queue_index);
2880                 free_cpumask_var(mask);
2881         }
2882
2883         /* schedule our worker thread which will take care of
2884          * applying the new filter changes
2885          */
2886         i40e_service_event_schedule(vsi->back);
2887 }
2888
2889 /**
2890  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2891  * @ring: The Tx ring to configure
2892  *
2893  * Configure the Tx descriptor ring in the HMC context.
2894  **/
2895 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2896 {
2897         struct i40e_vsi *vsi = ring->vsi;
2898         u16 pf_q = vsi->base_queue + ring->queue_index;
2899         struct i40e_hw *hw = &vsi->back->hw;
2900         struct i40e_hmc_obj_txq tx_ctx;
2901         i40e_status err = 0;
2902         u32 qtx_ctl = 0;
2903
2904         /* some ATR related tx ring init */
2905         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2906                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2907                 ring->atr_count = 0;
2908         } else {
2909                 ring->atr_sample_rate = 0;
2910         }
2911
2912         /* configure XPS */
2913         i40e_config_xps_tx_ring(ring);
2914
2915         /* clear the context structure first */
2916         memset(&tx_ctx, 0, sizeof(tx_ctx));
2917
2918         tx_ctx.new_context = 1;
2919         tx_ctx.base = (ring->dma / 128);
2920         tx_ctx.qlen = ring->count;
2921         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2922                                                I40E_FLAG_FD_ATR_ENABLED));
2923         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2924         /* FDIR VSI tx ring can still use RS bit and writebacks */
2925         if (vsi->type != I40E_VSI_FDIR)
2926                 tx_ctx.head_wb_ena = 1;
2927         tx_ctx.head_wb_addr = ring->dma +
2928                               (ring->count * sizeof(struct i40e_tx_desc));
2929
2930         /* As part of VSI creation/update, FW allocates certain
2931          * Tx arbitration queue sets for each TC enabled for
2932          * the VSI. The FW returns the handles to these queue
2933          * sets as part of the response buffer to Add VSI,
2934          * Update VSI, etc. AQ commands. It is expected that
2935          * these queue set handles be associated with the Tx
2936          * queues by the driver as part of the TX queue context
2937          * initialization. This has to be done regardless of
2938          * DCB as by default everything is mapped to TC0.
2939          */
2940         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2941         tx_ctx.rdylist_act = 0;
2942
2943         /* clear the context in the HMC */
2944         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2945         if (err) {
2946                 dev_info(&vsi->back->pdev->dev,
2947                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2948                          ring->queue_index, pf_q, err);
2949                 return -ENOMEM;
2950         }
2951
2952         /* set the context in the HMC */
2953         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2954         if (err) {
2955                 dev_info(&vsi->back->pdev->dev,
2956                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2957                          ring->queue_index, pf_q, err);
2958                 return -ENOMEM;
2959         }
2960
2961         /* Now associate this queue with this PCI function */
2962         if (vsi->type == I40E_VSI_VMDQ2) {
2963                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2964                 qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
2965                            I40E_QTX_CTL_VFVM_INDX_MASK;
2966         } else {
2967                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2968         }
2969
2970         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2971                     I40E_QTX_CTL_PF_INDX_MASK);
2972         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2973         i40e_flush(hw);
2974
2975         /* cache tail off for easier writes later */
2976         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2977
2978         return 0;
2979 }
2980
2981 /**
2982  * i40e_configure_rx_ring - Configure a receive ring context
2983  * @ring: The Rx ring to configure
2984  *
2985  * Configure the Rx descriptor ring in the HMC context.
2986  **/
2987 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2988 {
2989         struct i40e_vsi *vsi = ring->vsi;
2990         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2991         u16 pf_q = vsi->base_queue + ring->queue_index;
2992         struct i40e_hw *hw = &vsi->back->hw;
2993         struct i40e_hmc_obj_rxq rx_ctx;
2994         i40e_status err = 0;
2995
2996         ring->state = 0;
2997
2998         /* clear the context structure first */
2999         memset(&rx_ctx, 0, sizeof(rx_ctx));
3000
3001         ring->rx_buf_len = vsi->rx_buf_len;
3002
3003         rx_ctx.dbuff = DIV_ROUND_UP(ring->rx_buf_len,
3004                                     BIT_ULL(I40E_RXQ_CTX_DBUFF_SHIFT));
3005
3006         rx_ctx.base = (ring->dma / 128);
3007         rx_ctx.qlen = ring->count;
3008
3009         /* use 32 byte descriptors */
3010         rx_ctx.dsize = 1;
3011
3012         /* descriptor type is always zero
3013          * rx_ctx.dtype = 0;
3014          */
3015         rx_ctx.hsplit_0 = 0;
3016
3017         rx_ctx.rxmax = min_t(u16, vsi->max_frame, chain_len * ring->rx_buf_len);
3018         if (hw->revision_id == 0)
3019                 rx_ctx.lrxqthresh = 0;
3020         else
3021                 rx_ctx.lrxqthresh = 2;
3022         rx_ctx.crcstrip = 1;
3023         rx_ctx.l2tsel = 1;
3024         /* this controls whether VLAN is stripped from inner headers */
3025         rx_ctx.showiv = 0;
3026         /* set the prefena field to 1 because the manual says to */
3027         rx_ctx.prefena = 1;
3028
3029         /* clear the context in the HMC */
3030         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
3031         if (err) {
3032                 dev_info(&vsi->back->pdev->dev,
3033                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
3034                          ring->queue_index, pf_q, err);
3035                 return -ENOMEM;
3036         }
3037
3038         /* set the context in the HMC */
3039         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
3040         if (err) {
3041                 dev_info(&vsi->back->pdev->dev,
3042                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
3043                          ring->queue_index, pf_q, err);
3044                 return -ENOMEM;
3045         }
3046
3047         /* configure Rx buffer alignment */
3048         if (!vsi->netdev || (vsi->back->flags & I40E_FLAG_LEGACY_RX))
3049                 clear_ring_build_skb_enabled(ring);
3050         else
3051                 set_ring_build_skb_enabled(ring);
3052
3053         /* cache tail for quicker writes, and clear the reg before use */
3054         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
3055         writel(0, ring->tail);
3056
3057         i40e_alloc_rx_buffers(ring, I40E_DESC_UNUSED(ring));
3058
3059         return 0;
3060 }
3061
3062 /**
3063  * i40e_vsi_configure_tx - Configure the VSI for Tx
3064  * @vsi: VSI structure describing this set of rings and resources
3065  *
3066  * Configure the Tx VSI for operation.
3067  **/
3068 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
3069 {
3070         int err = 0;
3071         u16 i;
3072
3073         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
3074                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
3075
3076         return err;
3077 }
3078
3079 /**
3080  * i40e_vsi_configure_rx - Configure the VSI for Rx
3081  * @vsi: the VSI being configured
3082  *
3083  * Configure the Rx VSI for operation.
3084  **/
3085 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
3086 {
3087         int err = 0;
3088         u16 i;
3089
3090         if (!vsi->netdev || (vsi->back->flags & I40E_FLAG_LEGACY_RX)) {
3091                 vsi->max_frame = I40E_MAX_RXBUFFER;
3092                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
3093 #if (PAGE_SIZE < 8192)
3094         } else if (!I40E_2K_TOO_SMALL_WITH_PADDING &&
3095                    (vsi->netdev->mtu <= ETH_DATA_LEN)) {
3096                 vsi->max_frame = I40E_RXBUFFER_1536 - NET_IP_ALIGN;
3097                 vsi->rx_buf_len = I40E_RXBUFFER_1536 - NET_IP_ALIGN;
3098 #endif
3099         } else {
3100                 vsi->max_frame = I40E_MAX_RXBUFFER;
3101                 vsi->rx_buf_len = (PAGE_SIZE < 8192) ? I40E_RXBUFFER_3072 :
3102                                                        I40E_RXBUFFER_2048;
3103         }
3104
3105         /* set up individual rings */
3106         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
3107                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
3108
3109         return err;
3110 }
3111
3112 /**
3113  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
3114  * @vsi: ptr to the VSI
3115  **/
3116 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
3117 {
3118         struct i40e_ring *tx_ring, *rx_ring;
3119         u16 qoffset, qcount;
3120         int i, n;
3121
3122         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
3123                 /* Reset the TC information */
3124                 for (i = 0; i < vsi->num_queue_pairs; i++) {
3125                         rx_ring = vsi->rx_rings[i];
3126                         tx_ring = vsi->tx_rings[i];
3127                         rx_ring->dcb_tc = 0;
3128                         tx_ring->dcb_tc = 0;
3129                 }
3130         }
3131
3132         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
3133                 if (!(vsi->tc_config.enabled_tc & BIT_ULL(n)))
3134                         continue;
3135
3136                 qoffset = vsi->tc_config.tc_info[n].qoffset;
3137                 qcount = vsi->tc_config.tc_info[n].qcount;
3138                 for (i = qoffset; i < (qoffset + qcount); i++) {
3139                         rx_ring = vsi->rx_rings[i];
3140                         tx_ring = vsi->tx_rings[i];
3141                         rx_ring->dcb_tc = n;
3142                         tx_ring->dcb_tc = n;
3143                 }
3144         }
3145 }
3146
3147 /**
3148  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
3149  * @vsi: ptr to the VSI
3150  **/
3151 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
3152 {
3153         struct i40e_pf *pf = vsi->back;
3154         int err;
3155
3156         if (vsi->netdev)
3157                 i40e_set_rx_mode(vsi->netdev);
3158
3159         if (!!(pf->flags & I40E_FLAG_PF_MAC)) {
3160                 err = i40e_macaddr_init(vsi, pf->hw.mac.addr);
3161                 if (err) {
3162                         dev_warn(&pf->pdev->dev,
3163                                  "could not set up macaddr; err %d\n", err);
3164                 }
3165         }
3166 }
3167
3168 /**
3169  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
3170  * @vsi: Pointer to the targeted VSI
3171  *
3172  * This function replays the hlist on the hw where all the SB Flow Director
3173  * filters were saved.
3174  **/
3175 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
3176 {
3177         struct i40e_fdir_filter *filter;
3178         struct i40e_pf *pf = vsi->back;
3179         struct hlist_node *node;
3180
3181         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
3182                 return;
3183
3184         /* Reset FDir counters as we're replaying all existing filters */
3185         pf->fd_tcp4_filter_cnt = 0;
3186         pf->fd_udp4_filter_cnt = 0;
3187         pf->fd_sctp4_filter_cnt = 0;
3188         pf->fd_ip4_filter_cnt = 0;
3189
3190         hlist_for_each_entry_safe(filter, node,
3191                                   &pf->fdir_filter_list, fdir_node) {
3192                 i40e_add_del_fdir(vsi, filter, true);
3193         }
3194 }
3195
3196 /**
3197  * i40e_vsi_configure - Set up the VSI for action
3198  * @vsi: the VSI being configured
3199  **/
3200 static int i40e_vsi_configure(struct i40e_vsi *vsi)
3201 {
3202         int err;
3203
3204         i40e_set_vsi_rx_mode(vsi);
3205         i40e_restore_vlan(vsi);
3206         i40e_vsi_config_dcb_rings(vsi);
3207         err = i40e_vsi_configure_tx(vsi);
3208         if (!err)
3209                 err = i40e_vsi_configure_rx(vsi);
3210
3211         return err;
3212 }
3213
3214 /**
3215  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
3216  * @vsi: the VSI being configured
3217  **/
3218 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
3219 {
3220         struct i40e_pf *pf = vsi->back;
3221         struct i40e_hw *hw = &pf->hw;
3222         u16 vector;
3223         int i, q;
3224         u32 qp;
3225
3226         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
3227          * and PFINT_LNKLSTn registers, e.g.:
3228          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
3229          */
3230         qp = vsi->base_queue;
3231         vector = vsi->base_vector;
3232         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
3233                 struct i40e_q_vector *q_vector = vsi->q_vectors[i];
3234
3235                 q_vector->itr_countdown = ITR_COUNTDOWN_START;
3236                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_rings[i]->rx_itr_setting);
3237                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
3238                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
3239                      q_vector->rx.itr);
3240                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_rings[i]->tx_itr_setting);
3241                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
3242                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
3243                      q_vector->tx.itr);
3244                 wr32(hw, I40E_PFINT_RATEN(vector - 1),
3245                      i40e_intrl_usec_to_reg(vsi->int_rate_limit));
3246
3247                 /* Linked list for the queuepairs assigned to this vector */
3248                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
3249                 for (q = 0; q < q_vector->num_ringpairs; q++) {
3250                         u32 val;
3251
3252                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
3253                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
3254                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
3255                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
3256                               (I40E_QUEUE_TYPE_TX
3257                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
3258
3259                         wr32(hw, I40E_QINT_RQCTL(qp), val);
3260
3261                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
3262                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
3263                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
3264                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
3265                               (I40E_QUEUE_TYPE_RX
3266                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3267
3268                         /* Terminate the linked list */
3269                         if (q == (q_vector->num_ringpairs - 1))
3270                                 val |= (I40E_QUEUE_END_OF_LIST
3271                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3272
3273                         wr32(hw, I40E_QINT_TQCTL(qp), val);
3274                         qp++;
3275                 }
3276         }
3277
3278         i40e_flush(hw);
3279 }
3280
3281 /**
3282  * i40e_enable_misc_int_causes - enable the non-queue interrupts
3283  * @hw: ptr to the hardware info
3284  **/
3285 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
3286 {
3287         struct i40e_hw *hw = &pf->hw;
3288         u32 val;
3289
3290         /* clear things first */
3291         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
3292         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
3293
3294         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
3295               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
3296               I40E_PFINT_ICR0_ENA_GRST_MASK          |
3297               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
3298               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
3299               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
3300               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
3301               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3302
3303         if (pf->flags & I40E_FLAG_IWARP_ENABLED)
3304                 val |= I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3305
3306         if (pf->flags & I40E_FLAG_PTP)
3307                 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3308
3309         wr32(hw, I40E_PFINT_ICR0_ENA, val);
3310
3311         /* SW_ITR_IDX = 0, but don't change INTENA */
3312         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
3313                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
3314
3315         /* OTHER_ITR_IDX = 0 */
3316         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
3317 }
3318
3319 /**
3320  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
3321  * @vsi: the VSI being configured
3322  **/
3323 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
3324 {
3325         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3326         struct i40e_pf *pf = vsi->back;
3327         struct i40e_hw *hw = &pf->hw;
3328         u32 val;
3329
3330         /* set the ITR configuration */
3331         q_vector->itr_countdown = ITR_COUNTDOWN_START;
3332         q_vector->rx.itr = ITR_TO_REG(vsi->rx_rings[0]->rx_itr_setting);
3333         q_vector->rx.latency_range = I40E_LOW_LATENCY;
3334         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
3335         q_vector->tx.itr = ITR_TO_REG(vsi->tx_rings[0]->tx_itr_setting);
3336         q_vector->tx.latency_range = I40E_LOW_LATENCY;
3337         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
3338
3339         i40e_enable_misc_int_causes(pf);
3340
3341         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
3342         wr32(hw, I40E_PFINT_LNKLST0, 0);
3343
3344         /* Associate the queue pair to the vector and enable the queue int */
3345         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
3346               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
3347               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3348
3349         wr32(hw, I40E_QINT_RQCTL(0), val);
3350
3351         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
3352               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3353               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3354
3355         wr32(hw, I40E_QINT_TQCTL(0), val);
3356         i40e_flush(hw);
3357 }
3358
3359 /**
3360  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
3361  * @pf: board private structure
3362  **/
3363 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
3364 {
3365         struct i40e_hw *hw = &pf->hw;
3366
3367         wr32(hw, I40E_PFINT_DYN_CTL0,
3368              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
3369         i40e_flush(hw);
3370 }
3371
3372 /**
3373  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
3374  * @pf: board private structure
3375  * @clearpba: true when all pending interrupt events should be cleared
3376  **/
3377 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf, bool clearpba)
3378 {
3379         struct i40e_hw *hw = &pf->hw;
3380         u32 val;
3381
3382         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
3383               (clearpba ? I40E_PFINT_DYN_CTL0_CLEARPBA_MASK : 0) |
3384               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
3385
3386         wr32(hw, I40E_PFINT_DYN_CTL0, val);
3387         i40e_flush(hw);
3388 }
3389
3390 /**
3391  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
3392  * @irq: interrupt number
3393  * @data: pointer to a q_vector
3394  **/
3395 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
3396 {
3397         struct i40e_q_vector *q_vector = data;
3398
3399         if (!q_vector->tx.ring && !q_vector->rx.ring)
3400                 return IRQ_HANDLED;
3401
3402         napi_schedule_irqoff(&q_vector->napi);
3403
3404         return IRQ_HANDLED;
3405 }
3406
3407 /**
3408  * i40e_irq_affinity_notify - Callback for affinity changes
3409  * @notify: context as to what irq was changed
3410  * @mask: the new affinity mask
3411  *
3412  * This is a callback function used by the irq_set_affinity_notifier function
3413  * so that we may register to receive changes to the irq affinity masks.
3414  **/
3415 static void i40e_irq_affinity_notify(struct irq_affinity_notify *notify,
3416                                      const cpumask_t *mask)
3417 {
3418         struct i40e_q_vector *q_vector =
3419                 container_of(notify, struct i40e_q_vector, affinity_notify);
3420
3421         q_vector->affinity_mask = *mask;
3422 }
3423
3424 /**
3425  * i40e_irq_affinity_release - Callback for affinity notifier release
3426  * @ref: internal core kernel usage
3427  *
3428  * This is a callback function used by the irq_set_affinity_notifier function
3429  * to inform the current notification subscriber that they will no longer
3430  * receive notifications.
3431  **/
3432 static void i40e_irq_affinity_release(struct kref *ref) {}
3433
3434 /**
3435  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
3436  * @vsi: the VSI being configured
3437  * @basename: name for the vector
3438  *
3439  * Allocates MSI-X vectors and requests interrupts from the kernel.
3440  **/
3441 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
3442 {
3443         int q_vectors = vsi->num_q_vectors;
3444         struct i40e_pf *pf = vsi->back;
3445         int base = vsi->base_vector;
3446         int rx_int_idx = 0;
3447         int tx_int_idx = 0;
3448         int vector, err;
3449         int irq_num;
3450
3451         for (vector = 0; vector < q_vectors; vector++) {
3452                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
3453
3454                 irq_num = pf->msix_entries[base + vector].vector;
3455
3456                 if (q_vector->tx.ring && q_vector->rx.ring) {
3457                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3458                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
3459                         tx_int_idx++;
3460                 } else if (q_vector->rx.ring) {
3461                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3462                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
3463                 } else if (q_vector->tx.ring) {
3464                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3465                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
3466                 } else {
3467                         /* skip this unused q_vector */
3468                         continue;
3469                 }
3470                 err = request_irq(irq_num,
3471                                   vsi->irq_handler,
3472                                   0,
3473                                   q_vector->name,
3474                                   q_vector);
3475                 if (err) {
3476                         dev_info(&pf->pdev->dev,
3477                                  "MSIX request_irq failed, error: %d\n", err);
3478                         goto free_queue_irqs;
3479                 }
3480
3481                 /* register for affinity change notifications */
3482                 q_vector->affinity_notify.notify = i40e_irq_affinity_notify;
3483                 q_vector->affinity_notify.release = i40e_irq_affinity_release;
3484                 irq_set_affinity_notifier(irq_num, &q_vector->affinity_notify);
3485                 /* assign the mask for this irq */
3486                 irq_set_affinity_hint(irq_num, &q_vector->affinity_mask);
3487         }
3488
3489         vsi->irqs_ready = true;
3490         return 0;
3491
3492 free_queue_irqs:
3493         while (vector) {
3494                 vector--;
3495                 irq_num = pf->msix_entries[base + vector].vector;
3496                 irq_set_affinity_notifier(irq_num, NULL);
3497                 irq_set_affinity_hint(irq_num, NULL);
3498                 free_irq(irq_num, &vsi->q_vectors[vector]);
3499         }
3500         return err;
3501 }
3502
3503 /**
3504  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3505  * @vsi: the VSI being un-configured
3506  **/
3507 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3508 {
3509         struct i40e_pf *pf = vsi->back;
3510         struct i40e_hw *hw = &pf->hw;
3511         int base = vsi->base_vector;
3512         int i;
3513
3514         for (i = 0; i < vsi->num_queue_pairs; i++) {
3515                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3516                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3517         }
3518
3519         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3520                 for (i = vsi->base_vector;
3521                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3522                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3523
3524                 i40e_flush(hw);
3525                 for (i = 0; i < vsi->num_q_vectors; i++)
3526                         synchronize_irq(pf->msix_entries[i + base].vector);
3527         } else {
3528                 /* Legacy and MSI mode - this stops all interrupt handling */
3529                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3530                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3531                 i40e_flush(hw);
3532                 synchronize_irq(pf->pdev->irq);
3533         }
3534 }
3535
3536 /**
3537  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3538  * @vsi: the VSI being configured
3539  **/
3540 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3541 {
3542         struct i40e_pf *pf = vsi->back;
3543         int i;
3544
3545         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3546                 for (i = 0; i < vsi->num_q_vectors; i++)
3547                         i40e_irq_dynamic_enable(vsi, i);
3548         } else {
3549                 i40e_irq_dynamic_enable_icr0(pf, true);
3550         }
3551
3552         i40e_flush(&pf->hw);
3553         return 0;
3554 }
3555
3556 /**
3557  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3558  * @pf: board private structure
3559  **/
3560 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3561 {
3562         /* Disable ICR 0 */
3563         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3564         i40e_flush(&pf->hw);
3565 }
3566
3567 /**
3568  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3569  * @irq: interrupt number
3570  * @data: pointer to a q_vector
3571  *
3572  * This is the handler used for all MSI/Legacy interrupts, and deals
3573  * with both queue and non-queue interrupts.  This is also used in
3574  * MSIX mode to handle the non-queue interrupts.
3575  **/
3576 static irqreturn_t i40e_intr(int irq, void *data)
3577 {
3578         struct i40e_pf *pf = (struct i40e_pf *)data;
3579         struct i40e_hw *hw = &pf->hw;
3580         irqreturn_t ret = IRQ_NONE;
3581         u32 icr0, icr0_remaining;
3582         u32 val, ena_mask;
3583
3584         icr0 = rd32(hw, I40E_PFINT_ICR0);
3585         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3586
3587         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3588         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3589                 goto enable_intr;
3590
3591         /* if interrupt but no bits showing, must be SWINT */
3592         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3593             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3594                 pf->sw_int_count++;
3595
3596         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
3597             (ena_mask & I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK)) {
3598                 ena_mask &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3599                 icr0 &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3600                 dev_dbg(&pf->pdev->dev, "cleared PE_CRITERR\n");
3601         }
3602
3603         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3604         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3605                 struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
3606                 struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3607
3608                 /* We do not have a way to disarm Queue causes while leaving
3609                  * interrupt enabled for all other causes, ideally
3610                  * interrupt should be disabled while we are in NAPI but
3611                  * this is not a performance path and napi_schedule()
3612                  * can deal with rescheduling.
3613                  */
3614                 if (!test_bit(__I40E_DOWN, &pf->state))
3615                         napi_schedule_irqoff(&q_vector->napi);
3616         }
3617
3618         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3619                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3620                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3621                 i40e_debug(&pf->hw, I40E_DEBUG_NVM, "AdminQ event\n");
3622         }
3623
3624         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3625                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3626                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3627         }
3628
3629         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3630                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3631                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3632         }
3633
3634         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3635                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3636                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3637                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3638                 val = rd32(hw, I40E_GLGEN_RSTAT);
3639                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3640                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3641                 if (val == I40E_RESET_CORER) {
3642                         pf->corer_count++;
3643                 } else if (val == I40E_RESET_GLOBR) {
3644                         pf->globr_count++;
3645                 } else if (val == I40E_RESET_EMPR) {
3646                         pf->empr_count++;
3647                         set_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state);
3648                 }
3649         }
3650
3651         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3652                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3653                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3654                 dev_info(&pf->pdev->dev, "HMC error info 0x%x, HMC error data 0x%x\n",
3655                          rd32(hw, I40E_PFHMC_ERRORINFO),
3656                          rd32(hw, I40E_PFHMC_ERRORDATA));
3657         }
3658
3659         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3660                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3661
3662                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3663                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3664                         i40e_ptp_tx_hwtstamp(pf);
3665                 }
3666         }
3667
3668         /* If a critical error is pending we have no choice but to reset the
3669          * device.
3670          * Report and mask out any remaining unexpected interrupts.
3671          */
3672         icr0_remaining = icr0 & ena_mask;
3673         if (icr0_remaining) {
3674                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3675                          icr0_remaining);
3676                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3677                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3678                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3679                         dev_info(&pf->pdev->dev, "device will be reset\n");
3680                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3681                         i40e_service_event_schedule(pf);
3682                 }
3683                 ena_mask &= ~icr0_remaining;
3684         }
3685         ret = IRQ_HANDLED;
3686
3687 enable_intr:
3688         /* re-enable interrupt causes */
3689         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3690         if (!test_bit(__I40E_DOWN, &pf->state)) {
3691                 i40e_service_event_schedule(pf);
3692                 i40e_irq_dynamic_enable_icr0(pf, false);
3693         }
3694
3695         return ret;
3696 }
3697
3698 /**
3699  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3700  * @tx_ring:  tx ring to clean
3701  * @budget:   how many cleans we're allowed
3702  *
3703  * Returns true if there's any budget left (e.g. the clean is finished)
3704  **/
3705 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3706 {
3707         struct i40e_vsi *vsi = tx_ring->vsi;
3708         u16 i = tx_ring->next_to_clean;
3709         struct i40e_tx_buffer *tx_buf;
3710         struct i40e_tx_desc *tx_desc;
3711
3712         tx_buf = &tx_ring->tx_bi[i];
3713         tx_desc = I40E_TX_DESC(tx_ring, i);
3714         i -= tx_ring->count;
3715
3716         do {
3717                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3718
3719                 /* if next_to_watch is not set then there is no work pending */
3720                 if (!eop_desc)
3721                         break;
3722
3723                 /* prevent any other reads prior to eop_desc */
3724                 read_barrier_depends();
3725
3726                 /* if the descriptor isn't done, no work yet to do */
3727                 if (!(eop_desc->cmd_type_offset_bsz &
3728                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3729                         break;
3730
3731                 /* clear next_to_watch to prevent false hangs */
3732                 tx_buf->next_to_watch = NULL;
3733
3734                 tx_desc->buffer_addr = 0;
3735                 tx_desc->cmd_type_offset_bsz = 0;
3736                 /* move past filter desc */
3737                 tx_buf++;
3738                 tx_desc++;
3739                 i++;
3740                 if (unlikely(!i)) {
3741                         i -= tx_ring->count;
3742                         tx_buf = tx_ring->tx_bi;
3743                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3744                 }
3745                 /* unmap skb header data */
3746                 dma_unmap_single(tx_ring->dev,
3747                                  dma_unmap_addr(tx_buf, dma),
3748                                  dma_unmap_len(tx_buf, len),
3749                                  DMA_TO_DEVICE);
3750                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3751                         kfree(tx_buf->raw_buf);
3752
3753                 tx_buf->raw_buf = NULL;
3754                 tx_buf->tx_flags = 0;
3755                 tx_buf->next_to_watch = NULL;
3756                 dma_unmap_len_set(tx_buf, len, 0);
3757                 tx_desc->buffer_addr = 0;
3758                 tx_desc->cmd_type_offset_bsz = 0;
3759
3760                 /* move us past the eop_desc for start of next FD desc */
3761                 tx_buf++;
3762                 tx_desc++;
3763                 i++;
3764                 if (unlikely(!i)) {
3765                         i -= tx_ring->count;
3766                         tx_buf = tx_ring->tx_bi;
3767                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3768                 }
3769
3770                 /* update budget accounting */
3771                 budget--;
3772         } while (likely(budget));
3773
3774         i += tx_ring->count;
3775         tx_ring->next_to_clean = i;
3776
3777         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED)
3778                 i40e_irq_dynamic_enable(vsi, tx_ring->q_vector->v_idx);
3779
3780         return budget > 0;
3781 }
3782
3783 /**
3784  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3785  * @irq: interrupt number
3786  * @data: pointer to a q_vector
3787  **/
3788 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3789 {
3790         struct i40e_q_vector *q_vector = data;
3791         struct i40e_vsi *vsi;
3792
3793         if (!q_vector->tx.ring)
3794                 return IRQ_HANDLED;
3795
3796         vsi = q_vector->tx.ring->vsi;
3797         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3798
3799         return IRQ_HANDLED;
3800 }
3801
3802 /**
3803  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3804  * @vsi: the VSI being configured
3805  * @v_idx: vector index
3806  * @qp_idx: queue pair index
3807  **/
3808 static void i40e_map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3809 {
3810         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3811         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3812         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3813
3814         tx_ring->q_vector = q_vector;
3815         tx_ring->next = q_vector->tx.ring;
3816         q_vector->tx.ring = tx_ring;
3817         q_vector->tx.count++;
3818
3819         rx_ring->q_vector = q_vector;
3820         rx_ring->next = q_vector->rx.ring;
3821         q_vector->rx.ring = rx_ring;
3822         q_vector->rx.count++;
3823 }
3824
3825 /**
3826  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3827  * @vsi: the VSI being configured
3828  *
3829  * This function maps descriptor rings to the queue-specific vectors
3830  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3831  * one vector per queue pair, but on a constrained vector budget, we
3832  * group the queue pairs as "efficiently" as possible.
3833  **/
3834 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3835 {
3836         int qp_remaining = vsi->num_queue_pairs;
3837         int q_vectors = vsi->num_q_vectors;
3838         int num_ringpairs;
3839         int v_start = 0;
3840         int qp_idx = 0;
3841
3842         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3843          * group them so there are multiple queues per vector.
3844          * It is also important to go through all the vectors available to be
3845          * sure that if we don't use all the vectors, that the remaining vectors
3846          * are cleared. This is especially important when decreasing the
3847          * number of queues in use.
3848          */
3849         for (; v_start < q_vectors; v_start++) {
3850                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3851
3852                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3853
3854                 q_vector->num_ringpairs = num_ringpairs;
3855
3856                 q_vector->rx.count = 0;
3857                 q_vector->tx.count = 0;
3858                 q_vector->rx.ring = NULL;
3859                 q_vector->tx.ring = NULL;
3860
3861                 while (num_ringpairs--) {
3862                         i40e_map_vector_to_qp(vsi, v_start, qp_idx);
3863                         qp_idx++;
3864                         qp_remaining--;
3865                 }
3866         }
3867 }
3868
3869 /**
3870  * i40e_vsi_request_irq - Request IRQ from the OS
3871  * @vsi: the VSI being configured
3872  * @basename: name for the vector
3873  **/
3874 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3875 {
3876         struct i40e_pf *pf = vsi->back;
3877         int err;
3878
3879         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3880                 err = i40e_vsi_request_irq_msix(vsi, basename);
3881         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3882                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3883                                   pf->int_name, pf);
3884         else
3885                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3886                                   pf->int_name, pf);
3887
3888         if (err)
3889                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3890
3891         return err;
3892 }
3893
3894 #ifdef CONFIG_NET_POLL_CONTROLLER
3895 /**
3896  * i40e_netpoll - A Polling 'interrupt' handler
3897  * @netdev: network interface device structure
3898  *
3899  * This is used by netconsole to send skbs without having to re-enable
3900  * interrupts.  It's not called while the normal interrupt routine is executing.
3901  **/
3902 static void i40e_netpoll(struct net_device *netdev)
3903 {
3904         struct i40e_netdev_priv *np = netdev_priv(netdev);
3905         struct i40e_vsi *vsi = np->vsi;
3906         struct i40e_pf *pf = vsi->back;
3907         int i;
3908
3909         /* if interface is down do nothing */
3910         if (test_bit(__I40E_DOWN, &vsi->state))
3911                 return;
3912
3913         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3914                 for (i = 0; i < vsi->num_q_vectors; i++)
3915                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3916         } else {
3917                 i40e_intr(pf->pdev->irq, netdev);
3918         }
3919 }
3920 #endif
3921
3922 /**
3923  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3924  * @pf: the PF being configured
3925  * @pf_q: the PF queue
3926  * @enable: enable or disable state of the queue
3927  *
3928  * This routine will wait for the given Tx queue of the PF to reach the
3929  * enabled or disabled state.
3930  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3931  * multiple retries; else will return 0 in case of success.
3932  **/
3933 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3934 {
3935         int i;
3936         u32 tx_reg;
3937
3938         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3939                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3940                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3941                         break;
3942
3943                 usleep_range(10, 20);
3944         }
3945         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3946                 return -ETIMEDOUT;
3947
3948         return 0;
3949 }
3950
3951 /**
3952  * i40e_vsi_control_tx - Start or stop a VSI's rings
3953  * @vsi: the VSI being configured
3954  * @enable: start or stop the rings
3955  **/
3956 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3957 {
3958         struct i40e_pf *pf = vsi->back;
3959         struct i40e_hw *hw = &pf->hw;
3960         int i, j, pf_q, ret = 0;
3961         u32 tx_reg;
3962
3963         pf_q = vsi->base_queue;
3964         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3965
3966                 /* warn the TX unit of coming changes */
3967                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3968                 if (!enable)
3969                         usleep_range(10, 20);
3970
3971                 for (j = 0; j < 50; j++) {
3972                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3973                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3974                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3975                                 break;
3976                         usleep_range(1000, 2000);
3977                 }
3978                 /* Skip if the queue is already in the requested state */
3979                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3980                         continue;
3981
3982                 /* turn on/off the queue */
3983                 if (enable) {
3984                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3985                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3986                 } else {
3987                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3988                 }
3989
3990                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3991                 /* No waiting for the Tx queue to disable */
3992                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3993                         continue;
3994
3995                 /* wait for the change to finish */
3996                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3997                 if (ret) {
3998                         dev_info(&pf->pdev->dev,
3999                                  "VSI seid %d Tx ring %d %sable timeout\n",
4000                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
4001                         break;
4002                 }
4003         }
4004
4005         return ret;
4006 }
4007
4008 /**
4009  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
4010  * @pf: the PF being configured
4011  * @pf_q: the PF queue
4012  * @enable: enable or disable state of the queue
4013  *
4014  * This routine will wait for the given Rx queue of the PF to reach the
4015  * enabled or disabled state.
4016  * Returns -ETIMEDOUT in case of failing to reach the requested state after
4017  * multiple retries; else will return 0 in case of success.
4018  **/
4019 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
4020 {
4021         int i;
4022         u32 rx_reg;
4023
4024         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
4025                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
4026                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
4027                         break;
4028
4029                 usleep_range(10, 20);
4030         }
4031         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
4032                 return -ETIMEDOUT;
4033
4034         return 0;
4035 }
4036
4037 /**
4038  * i40e_vsi_control_rx - Start or stop a VSI's rings
4039  * @vsi: the VSI being configured
4040  * @enable: start or stop the rings
4041  **/
4042 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
4043 {
4044         struct i40e_pf *pf = vsi->back;
4045         struct i40e_hw *hw = &pf->hw;
4046         int i, j, pf_q, ret = 0;
4047         u32 rx_reg;
4048
4049         pf_q = vsi->base_queue;
4050         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4051                 for (j = 0; j < 50; j++) {
4052                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
4053                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
4054                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
4055                                 break;
4056                         usleep_range(1000, 2000);
4057                 }
4058
4059                 /* Skip if the queue is already in the requested state */
4060                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
4061                         continue;
4062
4063                 /* turn on/off the queue */
4064                 if (enable)
4065                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
4066                 else
4067                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
4068                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
4069                 /* No waiting for the Tx queue to disable */
4070                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
4071                         continue;
4072
4073                 /* wait for the change to finish */
4074                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
4075                 if (ret) {
4076                         dev_info(&pf->pdev->dev,
4077                                  "VSI seid %d Rx ring %d %sable timeout\n",
4078                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
4079                         break;
4080                 }
4081         }
4082
4083         /* Due to HW errata, on Rx disable only, the register can indicate done
4084          * before it really is. Needs 50ms to be sure
4085          */
4086         if (!enable)
4087                 mdelay(50);
4088
4089         return ret;
4090 }
4091
4092 /**
4093  * i40e_vsi_start_rings - Start a VSI's rings
4094  * @vsi: the VSI being configured
4095  **/
4096 int i40e_vsi_start_rings(struct i40e_vsi *vsi)
4097 {
4098         int ret = 0;
4099
4100         /* do rx first for enable and last for disable */
4101         ret = i40e_vsi_control_rx(vsi, true);
4102         if (ret)
4103                 return ret;
4104         ret = i40e_vsi_control_tx(vsi, true);
4105
4106         return ret;
4107 }
4108
4109 /**
4110  * i40e_vsi_stop_rings - Stop a VSI's rings
4111  * @vsi: the VSI being configured
4112  **/
4113 void i40e_vsi_stop_rings(struct i40e_vsi *vsi)
4114 {
4115         /* do rx first for enable and last for disable
4116          * Ignore return value, we need to shutdown whatever we can
4117          */
4118         i40e_vsi_control_tx(vsi, false);
4119         i40e_vsi_control_rx(vsi, false);
4120 }
4121
4122 /**
4123  * i40e_vsi_free_irq - Free the irq association with the OS
4124  * @vsi: the VSI being configured
4125  **/
4126 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
4127 {
4128         struct i40e_pf *pf = vsi->back;
4129         struct i40e_hw *hw = &pf->hw;
4130         int base = vsi->base_vector;
4131         u32 val, qp;
4132         int i;
4133
4134         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4135                 if (!vsi->q_vectors)
4136                         return;
4137
4138                 if (!vsi->irqs_ready)
4139                         return;
4140
4141                 vsi->irqs_ready = false;
4142                 for (i = 0; i < vsi->num_q_vectors; i++) {
4143                         int irq_num;
4144                         u16 vector;
4145
4146                         vector = i + base;
4147                         irq_num = pf->msix_entries[vector].vector;
4148
4149                         /* free only the irqs that were actually requested */
4150                         if (!vsi->q_vectors[i] ||
4151                             !vsi->q_vectors[i]->num_ringpairs)
4152                                 continue;
4153
4154                         /* clear the affinity notifier in the IRQ descriptor */
4155                         irq_set_affinity_notifier(irq_num, NULL);
4156                         /* clear the affinity_mask in the IRQ descriptor */
4157                         irq_set_affinity_hint(irq_num, NULL);
4158                         synchronize_irq(irq_num);
4159                         free_irq(irq_num, vsi->q_vectors[i]);
4160
4161                         /* Tear down the interrupt queue link list
4162                          *
4163                          * We know that they come in pairs and always
4164                          * the Rx first, then the Tx.  To clear the
4165                          * link list, stick the EOL value into the
4166                          * next_q field of the registers.
4167                          */
4168                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
4169                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4170                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4171                         val |= I40E_QUEUE_END_OF_LIST
4172                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4173                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
4174
4175                         while (qp != I40E_QUEUE_END_OF_LIST) {
4176                                 u32 next;
4177
4178                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4179
4180                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4181                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4182                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4183                                          I40E_QINT_RQCTL_INTEVENT_MASK);
4184
4185                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4186                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4187
4188                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4189
4190                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4191
4192                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
4193                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
4194
4195                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4196                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4197                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4198                                          I40E_QINT_TQCTL_INTEVENT_MASK);
4199
4200                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4201                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4202
4203                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4204                                 qp = next;
4205                         }
4206                 }
4207         } else {
4208                 free_irq(pf->pdev->irq, pf);
4209
4210                 val = rd32(hw, I40E_PFINT_LNKLST0);
4211                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4212                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4213                 val |= I40E_QUEUE_END_OF_LIST
4214                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
4215                 wr32(hw, I40E_PFINT_LNKLST0, val);
4216
4217                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4218                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4219                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4220                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4221                          I40E_QINT_RQCTL_INTEVENT_MASK);
4222
4223                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4224                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4225
4226                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4227
4228                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4229
4230                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4231                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4232                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4233                          I40E_QINT_TQCTL_INTEVENT_MASK);
4234
4235                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4236                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4237
4238                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4239         }
4240 }
4241
4242 /**
4243  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
4244  * @vsi: the VSI being configured
4245  * @v_idx: Index of vector to be freed
4246  *
4247  * This function frees the memory allocated to the q_vector.  In addition if
4248  * NAPI is enabled it will delete any references to the NAPI struct prior
4249  * to freeing the q_vector.
4250  **/
4251 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
4252 {
4253         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
4254         struct i40e_ring *ring;
4255
4256         if (!q_vector)
4257                 return;
4258
4259         /* disassociate q_vector from rings */
4260         i40e_for_each_ring(ring, q_vector->tx)
4261                 ring->q_vector = NULL;
4262
4263         i40e_for_each_ring(ring, q_vector->rx)
4264                 ring->q_vector = NULL;
4265
4266         /* only VSI w/ an associated netdev is set up w/ NAPI */
4267         if (vsi->netdev)
4268                 netif_napi_del(&q_vector->napi);
4269
4270         vsi->q_vectors[v_idx] = NULL;
4271
4272         kfree_rcu(q_vector, rcu);
4273 }
4274
4275 /**
4276  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
4277  * @vsi: the VSI being un-configured
4278  *
4279  * This frees the memory allocated to the q_vectors and
4280  * deletes references to the NAPI struct.
4281  **/
4282 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
4283 {
4284         int v_idx;
4285
4286         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
4287                 i40e_free_q_vector(vsi, v_idx);
4288 }
4289
4290 /**
4291  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
4292  * @pf: board private structure
4293  **/
4294 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
4295 {
4296         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
4297         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4298                 pci_disable_msix(pf->pdev);
4299                 kfree(pf->msix_entries);
4300                 pf->msix_entries = NULL;
4301                 kfree(pf->irq_pile);
4302                 pf->irq_pile = NULL;
4303         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
4304                 pci_disable_msi(pf->pdev);
4305         }
4306         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
4307 }
4308
4309 /**
4310  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
4311  * @pf: board private structure
4312  *
4313  * We go through and clear interrupt specific resources and reset the structure
4314  * to pre-load conditions
4315  **/
4316 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
4317 {
4318         int i;
4319
4320         i40e_stop_misc_vector(pf);
4321         if (pf->flags & I40E_FLAG_MSIX_ENABLED && pf->msix_entries) {
4322                 synchronize_irq(pf->msix_entries[0].vector);
4323                 free_irq(pf->msix_entries[0].vector, pf);
4324         }
4325
4326         i40e_put_lump(pf->irq_pile, pf->iwarp_base_vector,
4327                       I40E_IWARP_IRQ_PILE_ID);
4328
4329         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
4330         for (i = 0; i < pf->num_alloc_vsi; i++)
4331                 if (pf->vsi[i])
4332                         i40e_vsi_free_q_vectors(pf->vsi[i]);
4333         i40e_reset_interrupt_capability(pf);
4334 }
4335
4336 /**
4337  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
4338  * @vsi: the VSI being configured
4339  **/
4340 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
4341 {
4342         int q_idx;
4343
4344         if (!vsi->netdev)
4345                 return;
4346
4347         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++) {
4348                 struct i40e_q_vector *q_vector = vsi->q_vectors[q_idx];
4349
4350                 if (q_vector->rx.ring || q_vector->tx.ring)
4351                         napi_enable(&q_vector->napi);
4352         }
4353 }
4354
4355 /**
4356  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
4357  * @vsi: the VSI being configured
4358  **/
4359 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
4360 {
4361         int q_idx;
4362
4363         if (!vsi->netdev)
4364                 return;
4365
4366         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++) {
4367                 struct i40e_q_vector *q_vector = vsi->q_vectors[q_idx];
4368
4369                 if (q_vector->rx.ring || q_vector->tx.ring)
4370                         napi_disable(&q_vector->napi);
4371         }
4372 }
4373
4374 /**
4375  * i40e_vsi_close - Shut down a VSI
4376  * @vsi: the vsi to be quelled
4377  **/
4378 static void i40e_vsi_close(struct i40e_vsi *vsi)
4379 {
4380         struct i40e_pf *pf = vsi->back;
4381         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
4382                 i40e_down(vsi);
4383         i40e_vsi_free_irq(vsi);
4384         i40e_vsi_free_tx_resources(vsi);
4385         i40e_vsi_free_rx_resources(vsi);
4386         vsi->current_netdev_flags = 0;
4387         pf->flags |= I40E_FLAG_SERVICE_CLIENT_REQUESTED;
4388         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
4389                 pf->flags |=  I40E_FLAG_CLIENT_RESET;
4390 }
4391
4392 /**
4393  * i40e_quiesce_vsi - Pause a given VSI
4394  * @vsi: the VSI being paused
4395  **/
4396 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
4397 {
4398         if (test_bit(__I40E_DOWN, &vsi->state))
4399                 return;
4400
4401         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
4402         if (vsi->netdev && netif_running(vsi->netdev))
4403                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
4404         else
4405                 i40e_vsi_close(vsi);
4406 }
4407
4408 /**
4409  * i40e_unquiesce_vsi - Resume a given VSI
4410  * @vsi: the VSI being resumed
4411  **/
4412 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
4413 {
4414         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
4415                 return;
4416
4417         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
4418         if (vsi->netdev && netif_running(vsi->netdev))
4419                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
4420         else
4421                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
4422 }
4423
4424 /**
4425  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
4426  * @pf: the PF
4427  **/
4428 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
4429 {
4430         int v;
4431
4432         for (v = 0; v < pf->num_alloc_vsi; v++) {
4433                 if (pf->vsi[v])
4434                         i40e_quiesce_vsi(pf->vsi[v]);
4435         }
4436 }
4437
4438 /**
4439  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
4440  * @pf: the PF
4441  **/
4442 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
4443 {
4444         int v;
4445
4446         for (v = 0; v < pf->num_alloc_vsi; v++) {
4447                 if (pf->vsi[v])
4448                         i40e_unquiesce_vsi(pf->vsi[v]);
4449         }
4450 }
4451
4452 #ifdef CONFIG_I40E_DCB
4453 /**
4454  * i40e_vsi_wait_queues_disabled - Wait for VSI's queues to be disabled
4455  * @vsi: the VSI being configured
4456  *
4457  * Wait until all queues on a given VSI have been disabled.
4458  **/
4459 static int i40e_vsi_wait_queues_disabled(struct i40e_vsi *vsi)
4460 {
4461         struct i40e_pf *pf = vsi->back;
4462         int i, pf_q, ret;
4463
4464         pf_q = vsi->base_queue;
4465         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4466                 /* Check and wait for the Tx queue */
4467                 ret = i40e_pf_txq_wait(pf, pf_q, false);
4468                 if (ret) {
4469                         dev_info(&pf->pdev->dev,
4470                                  "VSI seid %d Tx ring %d disable timeout\n",
4471                                  vsi->seid, pf_q);
4472                         return ret;
4473                 }
4474                 /* Check and wait for the Tx queue */
4475                 ret = i40e_pf_rxq_wait(pf, pf_q, false);
4476                 if (ret) {
4477                         dev_info(&pf->pdev->dev,
4478                                  "VSI seid %d Rx ring %d disable timeout\n",
4479                                  vsi->seid, pf_q);
4480                         return ret;
4481                 }
4482         }
4483
4484         return 0;
4485 }
4486
4487 /**
4488  * i40e_pf_wait_queues_disabled - Wait for all queues of PF VSIs to be disabled
4489  * @pf: the PF
4490  *
4491  * This function waits for the queues to be in disabled state for all the
4492  * VSIs that are managed by this PF.
4493  **/
4494 static int i40e_pf_wait_queues_disabled(struct i40e_pf *pf)
4495 {
4496         int v, ret = 0;
4497
4498         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4499                 if (pf->vsi[v]) {
4500                         ret = i40e_vsi_wait_queues_disabled(pf->vsi[v]);
4501                         if (ret)
4502                                 break;
4503                 }
4504         }
4505
4506         return ret;
4507 }
4508
4509 #endif
4510
4511 /**
4512  * i40e_detect_recover_hung_queue - Function to detect and recover hung_queue
4513  * @q_idx: TX queue number
4514  * @vsi: Pointer to VSI struct
4515  *
4516  * This function checks specified queue for given VSI. Detects hung condition.
4517  * We proactively detect hung TX queues by checking if interrupts are disabled
4518  * but there are pending descriptors.  If it appears hung, attempt to recover
4519  * by triggering a SW interrupt.
4520  **/
4521 static void i40e_detect_recover_hung_queue(int q_idx, struct i40e_vsi *vsi)
4522 {
4523         struct i40e_ring *tx_ring = NULL;
4524         struct i40e_pf  *pf;
4525         u32 val, tx_pending;
4526         int i;
4527
4528         pf = vsi->back;
4529
4530         /* now that we have an index, find the tx_ring struct */
4531         for (i = 0; i < vsi->num_queue_pairs; i++) {
4532                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
4533                         if (q_idx == vsi->tx_rings[i]->queue_index) {
4534                                 tx_ring = vsi->tx_rings[i];
4535                                 break;
4536                         }
4537                 }
4538         }
4539
4540         if (!tx_ring)
4541                 return;
4542
4543         /* Read interrupt register */
4544         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4545                 val = rd32(&pf->hw,
4546                            I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
4547                                                tx_ring->vsi->base_vector - 1));
4548         else
4549                 val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
4550
4551         tx_pending = i40e_get_tx_pending(tx_ring);
4552
4553         /* Interrupts are disabled and TX pending is non-zero,
4554          * trigger the SW interrupt (don't wait). Worst case
4555          * there will be one extra interrupt which may result
4556          * into not cleaning any queues because queues are cleaned.
4557          */
4558         if (tx_pending && (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK)))
4559                 i40e_force_wb(vsi, tx_ring->q_vector);
4560 }
4561
4562 /**
4563  * i40e_detect_recover_hung - Function to detect and recover hung_queues
4564  * @pf:  pointer to PF struct
4565  *
4566  * LAN VSI has netdev and netdev has TX queues. This function is to check
4567  * each of those TX queues if they are hung, trigger recovery by issuing
4568  * SW interrupt.
4569  **/
4570 static void i40e_detect_recover_hung(struct i40e_pf *pf)
4571 {
4572         struct net_device *netdev;
4573         struct i40e_vsi *vsi;
4574         int i;
4575
4576         /* Only for LAN VSI */
4577         vsi = pf->vsi[pf->lan_vsi];
4578
4579         if (!vsi)
4580                 return;
4581
4582         /* Make sure, VSI state is not DOWN/RECOVERY_PENDING */
4583         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
4584             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
4585                 return;
4586
4587         /* Make sure type is MAIN VSI */
4588         if (vsi->type != I40E_VSI_MAIN)
4589                 return;
4590
4591         netdev = vsi->netdev;
4592         if (!netdev)
4593                 return;
4594
4595         /* Bail out if netif_carrier is not OK */
4596         if (!netif_carrier_ok(netdev))
4597                 return;
4598
4599         /* Go thru' TX queues for netdev */
4600         for (i = 0; i < netdev->num_tx_queues; i++) {
4601                 struct netdev_queue *q;
4602
4603                 q = netdev_get_tx_queue(netdev, i);
4604                 if (q)
4605                         i40e_detect_recover_hung_queue(i, vsi);
4606         }
4607 }
4608
4609 /**
4610  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
4611  * @pf: pointer to PF
4612  *
4613  * Get TC map for ISCSI PF type that will include iSCSI TC
4614  * and LAN TC.
4615  **/
4616 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
4617 {
4618         struct i40e_dcb_app_priority_table app;
4619         struct i40e_hw *hw = &pf->hw;
4620         u8 enabled_tc = 1; /* TC0 is always enabled */
4621         u8 tc, i;
4622         /* Get the iSCSI APP TLV */
4623         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4624
4625         for (i = 0; i < dcbcfg->numapps; i++) {
4626                 app = dcbcfg->app[i];
4627                 if (app.selector == I40E_APP_SEL_TCPIP &&
4628                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
4629                         tc = dcbcfg->etscfg.prioritytable[app.priority];
4630                         enabled_tc |= BIT(tc);
4631                         break;
4632                 }
4633         }
4634
4635         return enabled_tc;
4636 }
4637
4638 /**
4639  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
4640  * @dcbcfg: the corresponding DCBx configuration structure
4641  *
4642  * Return the number of TCs from given DCBx configuration
4643  **/
4644 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
4645 {
4646         int i, tc_unused = 0;
4647         u8 num_tc = 0;
4648         u8 ret = 0;
4649
4650         /* Scan the ETS Config Priority Table to find
4651          * traffic class enabled for a given priority
4652          * and create a bitmask of enabled TCs
4653          */
4654         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++)
4655                 num_tc |= BIT(dcbcfg->etscfg.prioritytable[i]);
4656
4657         /* Now scan the bitmask to check for
4658          * contiguous TCs starting with TC0
4659          */
4660         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4661                 if (num_tc & BIT(i)) {
4662                         if (!tc_unused) {
4663                                 ret++;
4664                         } else {
4665                                 pr_err("Non-contiguous TC - Disabling DCB\n");
4666                                 return 1;
4667                         }
4668                 } else {
4669                         tc_unused = 1;
4670                 }
4671         }
4672
4673         /* There is always at least TC0 */
4674         if (!ret)
4675                 ret = 1;
4676
4677         return ret;
4678 }
4679
4680 /**
4681  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
4682  * @dcbcfg: the corresponding DCBx configuration structure
4683  *
4684  * Query the current DCB configuration and return the number of
4685  * traffic classes enabled from the given DCBX config
4686  **/
4687 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
4688 {
4689         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
4690         u8 enabled_tc = 1;
4691         u8 i;
4692
4693         for (i = 0; i < num_tc; i++)
4694                 enabled_tc |= BIT(i);
4695
4696         return enabled_tc;
4697 }
4698
4699 /**
4700  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
4701  * @pf: PF being queried
4702  *
4703  * Return number of traffic classes enabled for the given PF
4704  **/
4705 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
4706 {
4707         struct i40e_hw *hw = &pf->hw;
4708         u8 i, enabled_tc = 1;
4709         u8 num_tc = 0;
4710         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4711
4712         /* If DCB is not enabled then always in single TC */
4713         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4714                 return 1;
4715
4716         /* SFP mode will be enabled for all TCs on port */
4717         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4718                 return i40e_dcb_get_num_tc(dcbcfg);
4719
4720         /* MFP mode return count of enabled TCs for this PF */
4721         if (pf->hw.func_caps.iscsi)
4722                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
4723         else
4724                 return 1; /* Only TC0 */
4725
4726         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4727                 if (enabled_tc & BIT(i))
4728                         num_tc++;
4729         }
4730         return num_tc;
4731 }
4732
4733 /**
4734  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4735  * @pf: PF being queried
4736  *
4737  * Return a bitmap for enabled traffic classes for this PF.
4738  **/
4739 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4740 {
4741         /* If DCB is not enabled for this PF then just return default TC */
4742         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4743                 return I40E_DEFAULT_TRAFFIC_CLASS;
4744
4745         /* SFP mode we want PF to be enabled for all TCs */
4746         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4747                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4748
4749         /* MFP enabled and iSCSI PF type */
4750         if (pf->hw.func_caps.iscsi)
4751                 return i40e_get_iscsi_tc_map(pf);
4752         else
4753                 return I40E_DEFAULT_TRAFFIC_CLASS;
4754 }
4755
4756 /**
4757  * i40e_vsi_get_bw_info - Query VSI BW Information
4758  * @vsi: the VSI being queried
4759  *
4760  * Returns 0 on success, negative value on failure
4761  **/
4762 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4763 {
4764         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4765         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4766         struct i40e_pf *pf = vsi->back;
4767         struct i40e_hw *hw = &pf->hw;
4768         i40e_status ret;
4769         u32 tc_bw_max;
4770         int i;
4771
4772         /* Get the VSI level BW configuration */
4773         ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4774         if (ret) {
4775                 dev_info(&pf->pdev->dev,
4776                          "couldn't get PF vsi bw config, err %s aq_err %s\n",
4777                          i40e_stat_str(&pf->hw, ret),
4778                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4779                 return -EINVAL;
4780         }
4781
4782         /* Get the VSI level BW configuration per TC */
4783         ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4784                                                NULL);
4785         if (ret) {
4786                 dev_info(&pf->pdev->dev,
4787                          "couldn't get PF vsi ets bw config, err %s aq_err %s\n",
4788                          i40e_stat_str(&pf->hw, ret),
4789                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4790                 return -EINVAL;
4791         }
4792
4793         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4794                 dev_info(&pf->pdev->dev,
4795                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4796                          bw_config.tc_valid_bits,
4797                          bw_ets_config.tc_valid_bits);
4798                 /* Still continuing */
4799         }
4800
4801         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4802         vsi->bw_max_quanta = bw_config.max_bw;
4803         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4804                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4805         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4806                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4807                 vsi->bw_ets_limit_credits[i] =
4808                                         le16_to_cpu(bw_ets_config.credits[i]);
4809                 /* 3 bits out of 4 for each TC */
4810                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4811         }
4812
4813         return 0;
4814 }
4815
4816 /**
4817  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4818  * @vsi: the VSI being configured
4819  * @enabled_tc: TC bitmap
4820  * @bw_credits: BW shared credits per TC
4821  *
4822  * Returns 0 on success, negative value on failure
4823  **/
4824 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4825                                        u8 *bw_share)
4826 {
4827         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4828         i40e_status ret;
4829         int i;
4830
4831         bw_data.tc_valid_bits = enabled_tc;
4832         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4833                 bw_data.tc_bw_credits[i] = bw_share[i];
4834
4835         ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4836                                        NULL);
4837         if (ret) {
4838                 dev_info(&vsi->back->pdev->dev,
4839                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4840                          vsi->back->hw.aq.asq_last_status);
4841                 return -EINVAL;
4842         }
4843
4844         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4845                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4846
4847         return 0;
4848 }
4849
4850 /**
4851  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4852  * @vsi: the VSI being configured
4853  * @enabled_tc: TC map to be enabled
4854  *
4855  **/
4856 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4857 {
4858         struct net_device *netdev = vsi->netdev;
4859         struct i40e_pf *pf = vsi->back;
4860         struct i40e_hw *hw = &pf->hw;
4861         u8 netdev_tc = 0;
4862         int i;
4863         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4864
4865         if (!netdev)
4866                 return;
4867
4868         if (!enabled_tc) {
4869                 netdev_reset_tc(netdev);
4870                 return;
4871         }
4872
4873         /* Set up actual enabled TCs on the VSI */
4874         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4875                 return;
4876
4877         /* set per TC queues for the VSI */
4878         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4879                 /* Only set TC queues for enabled tcs
4880                  *
4881                  * e.g. For a VSI that has TC0 and TC3 enabled the
4882                  * enabled_tc bitmap would be 0x00001001; the driver
4883                  * will set the numtc for netdev as 2 that will be
4884                  * referenced by the netdev layer as TC 0 and 1.
4885                  */
4886                 if (vsi->tc_config.enabled_tc & BIT(i))
4887                         netdev_set_tc_queue(netdev,
4888                                         vsi->tc_config.tc_info[i].netdev_tc,
4889                                         vsi->tc_config.tc_info[i].qcount,
4890                                         vsi->tc_config.tc_info[i].qoffset);
4891         }
4892
4893         /* Assign UP2TC map for the VSI */
4894         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4895                 /* Get the actual TC# for the UP */
4896                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4897                 /* Get the mapped netdev TC# for the UP */
4898                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4899                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4900         }
4901 }
4902
4903 /**
4904  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4905  * @vsi: the VSI being configured
4906  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4907  **/
4908 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4909                                       struct i40e_vsi_context *ctxt)
4910 {
4911         /* copy just the sections touched not the entire info
4912          * since not all sections are valid as returned by
4913          * update vsi params
4914          */
4915         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4916         memcpy(&vsi->info.queue_mapping,
4917                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4918         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4919                sizeof(vsi->info.tc_mapping));
4920 }
4921
4922 /**
4923  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4924  * @vsi: VSI to be configured
4925  * @enabled_tc: TC bitmap
4926  *
4927  * This configures a particular VSI for TCs that are mapped to the
4928  * given TC bitmap. It uses default bandwidth share for TCs across
4929  * VSIs to configure TC for a particular VSI.
4930  *
4931  * NOTE:
4932  * It is expected that the VSI queues have been quisced before calling
4933  * this function.
4934  **/
4935 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4936 {
4937         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4938         struct i40e_vsi_context ctxt;
4939         int ret = 0;
4940         int i;
4941
4942         /* Check if enabled_tc is same as existing or new TCs */
4943         if (vsi->tc_config.enabled_tc == enabled_tc)
4944                 return ret;
4945
4946         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4947         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4948                 if (enabled_tc & BIT(i))
4949                         bw_share[i] = 1;
4950         }
4951
4952         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4953         if (ret) {
4954                 dev_info(&vsi->back->pdev->dev,
4955                          "Failed configuring TC map %d for VSI %d\n",
4956                          enabled_tc, vsi->seid);
4957                 goto out;
4958         }
4959
4960         /* Update Queue Pairs Mapping for currently enabled UPs */
4961         ctxt.seid = vsi->seid;
4962         ctxt.pf_num = vsi->back->hw.pf_id;
4963         ctxt.vf_num = 0;
4964         ctxt.uplink_seid = vsi->uplink_seid;
4965         ctxt.info = vsi->info;
4966         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4967
4968         if (vsi->back->flags & I40E_FLAG_IWARP_ENABLED) {
4969                 ctxt.info.valid_sections |=
4970                                 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
4971                 ctxt.info.queueing_opt_flags |= I40E_AQ_VSI_QUE_OPT_TCP_ENA;
4972         }
4973
4974         /* Update the VSI after updating the VSI queue-mapping information */
4975         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4976         if (ret) {
4977                 dev_info(&vsi->back->pdev->dev,
4978                          "Update vsi tc config failed, err %s aq_err %s\n",
4979                          i40e_stat_str(&vsi->back->hw, ret),
4980                          i40e_aq_str(&vsi->back->hw,
4981                                      vsi->back->hw.aq.asq_last_status));
4982                 goto out;
4983         }
4984         /* update the local VSI info with updated queue map */
4985         i40e_vsi_update_queue_map(vsi, &ctxt);
4986         vsi->info.valid_sections = 0;
4987
4988         /* Update current VSI BW information */
4989         ret = i40e_vsi_get_bw_info(vsi);
4990         if (ret) {
4991                 dev_info(&vsi->back->pdev->dev,
4992                          "Failed updating vsi bw info, err %s aq_err %s\n",
4993                          i40e_stat_str(&vsi->back->hw, ret),
4994                          i40e_aq_str(&vsi->back->hw,
4995                                      vsi->back->hw.aq.asq_last_status));
4996                 goto out;
4997         }
4998
4999         /* Update the netdev TC setup */
5000         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
5001 out:
5002         return ret;
5003 }
5004
5005 /**
5006  * i40e_veb_config_tc - Configure TCs for given VEB
5007  * @veb: given VEB
5008  * @enabled_tc: TC bitmap
5009  *
5010  * Configures given TC bitmap for VEB (switching) element
5011  **/
5012 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
5013 {
5014         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
5015         struct i40e_pf *pf = veb->pf;
5016         int ret = 0;
5017         int i;
5018
5019         /* No TCs or already enabled TCs just return */
5020         if (!enabled_tc || veb->enabled_tc == enabled_tc)
5021                 return ret;
5022
5023         bw_data.tc_valid_bits = enabled_tc;
5024         /* bw_data.absolute_credits is not set (relative) */
5025
5026         /* Enable ETS TCs with equal BW Share for now */
5027         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
5028                 if (enabled_tc & BIT(i))
5029                         bw_data.tc_bw_share_credits[i] = 1;
5030         }
5031
5032         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
5033                                                    &bw_data, NULL);
5034         if (ret) {
5035                 dev_info(&pf->pdev->dev,
5036                          "VEB bw config failed, err %s aq_err %s\n",
5037                          i40e_stat_str(&pf->hw, ret),
5038                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5039                 goto out;
5040         }
5041
5042         /* Update the BW information */
5043         ret = i40e_veb_get_bw_info(veb);
5044         if (ret) {
5045                 dev_info(&pf->pdev->dev,
5046                          "Failed getting veb bw config, err %s aq_err %s\n",
5047                          i40e_stat_str(&pf->hw, ret),
5048                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5049         }
5050
5051 out:
5052         return ret;
5053 }
5054
5055 #ifdef CONFIG_I40E_DCB
5056 /**
5057  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
5058  * @pf: PF struct
5059  *
5060  * Reconfigure VEB/VSIs on a given PF; it is assumed that
5061  * the caller would've quiesce all the VSIs before calling
5062  * this function
5063  **/
5064 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
5065 {
5066         u8 tc_map = 0;
5067         int ret;
5068         u8 v;
5069
5070         /* Enable the TCs available on PF to all VEBs */
5071         tc_map = i40e_pf_get_tc_map(pf);
5072         for (v = 0; v < I40E_MAX_VEB; v++) {
5073                 if (!pf->veb[v])
5074                         continue;
5075                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
5076                 if (ret) {
5077                         dev_info(&pf->pdev->dev,
5078                                  "Failed configuring TC for VEB seid=%d\n",
5079                                  pf->veb[v]->seid);
5080                         /* Will try to configure as many components */
5081                 }
5082         }
5083
5084         /* Update each VSI */
5085         for (v = 0; v < pf->num_alloc_vsi; v++) {
5086                 if (!pf->vsi[v])
5087                         continue;
5088
5089                 /* - Enable all TCs for the LAN VSI
5090                  * - For all others keep them at TC0 for now
5091                  */
5092                 if (v == pf->lan_vsi)
5093                         tc_map = i40e_pf_get_tc_map(pf);
5094                 else
5095                         tc_map = I40E_DEFAULT_TRAFFIC_CLASS;
5096
5097                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
5098                 if (ret) {
5099                         dev_info(&pf->pdev->dev,
5100                                  "Failed configuring TC for VSI seid=%d\n",
5101                                  pf->vsi[v]->seid);
5102                         /* Will try to configure as many components */
5103                 } else {
5104                         /* Re-configure VSI vectors based on updated TC map */
5105                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
5106                         if (pf->vsi[v]->netdev)
5107                                 i40e_dcbnl_set_all(pf->vsi[v]);
5108                 }
5109         }
5110 }
5111
5112 /**
5113  * i40e_resume_port_tx - Resume port Tx
5114  * @pf: PF struct
5115  *
5116  * Resume a port's Tx and issue a PF reset in case of failure to
5117  * resume.
5118  **/
5119 static int i40e_resume_port_tx(struct i40e_pf *pf)
5120 {
5121         struct i40e_hw *hw = &pf->hw;
5122         int ret;
5123
5124         ret = i40e_aq_resume_port_tx(hw, NULL);
5125         if (ret) {
5126                 dev_info(&pf->pdev->dev,
5127                          "Resume Port Tx failed, err %s aq_err %s\n",
5128                           i40e_stat_str(&pf->hw, ret),
5129                           i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5130                 /* Schedule PF reset to recover */
5131                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5132                 i40e_service_event_schedule(pf);
5133         }
5134
5135         return ret;
5136 }
5137
5138 /**
5139  * i40e_init_pf_dcb - Initialize DCB configuration
5140  * @pf: PF being configured
5141  *
5142  * Query the current DCB configuration and cache it
5143  * in the hardware structure
5144  **/
5145 static int i40e_init_pf_dcb(struct i40e_pf *pf)
5146 {
5147         struct i40e_hw *hw = &pf->hw;
5148         int err = 0;
5149
5150         /* Do not enable DCB for SW1 and SW2 images even if the FW is capable */
5151         if (pf->flags & I40E_FLAG_NO_DCB_SUPPORT)
5152                 goto out;
5153
5154         /* Get the initial DCB configuration */
5155         err = i40e_init_dcb(hw);
5156         if (!err) {
5157                 /* Device/Function is not DCBX capable */
5158                 if ((!hw->func_caps.dcb) ||
5159                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
5160                         dev_info(&pf->pdev->dev,
5161                                  "DCBX offload is not supported or is disabled for this PF.\n");
5162                 } else {
5163                         /* When status is not DISABLED then DCBX in FW */
5164                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
5165                                        DCB_CAP_DCBX_VER_IEEE;
5166
5167                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
5168                         /* Enable DCB tagging only when more than one TC
5169                          * or explicitly disable if only one TC
5170                          */
5171                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5172                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5173                         else
5174                                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5175                         dev_dbg(&pf->pdev->dev,
5176                                 "DCBX offload is supported for this PF.\n");
5177                 }
5178         } else {
5179                 dev_info(&pf->pdev->dev,
5180                          "Query for DCB configuration failed, err %s aq_err %s\n",
5181                          i40e_stat_str(&pf->hw, err),
5182                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5183         }
5184
5185 out:
5186         return err;
5187 }
5188 #endif /* CONFIG_I40E_DCB */
5189 #define SPEED_SIZE 14
5190 #define FC_SIZE 8
5191 /**
5192  * i40e_print_link_message - print link up or down
5193  * @vsi: the VSI for which link needs a message
5194  */
5195 void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
5196 {
5197         enum i40e_aq_link_speed new_speed;
5198         char *speed = "Unknown";
5199         char *fc = "Unknown";
5200         char *fec = "";
5201         char *an = "";
5202
5203         new_speed = vsi->back->hw.phy.link_info.link_speed;
5204
5205         if ((vsi->current_isup == isup) && (vsi->current_speed == new_speed))
5206                 return;
5207         vsi->current_isup = isup;
5208         vsi->current_speed = new_speed;
5209         if (!isup) {
5210                 netdev_info(vsi->netdev, "NIC Link is Down\n");
5211                 return;
5212         }
5213
5214         /* Warn user if link speed on NPAR enabled partition is not at
5215          * least 10GB
5216          */
5217         if (vsi->back->hw.func_caps.npar_enable &&
5218             (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
5219              vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
5220                 netdev_warn(vsi->netdev,
5221                             "The partition detected link speed that is less than 10Gbps\n");
5222
5223         switch (vsi->back->hw.phy.link_info.link_speed) {
5224         case I40E_LINK_SPEED_40GB:
5225                 speed = "40 G";
5226                 break;
5227         case I40E_LINK_SPEED_20GB:
5228                 speed = "20 G";
5229                 break;
5230         case I40E_LINK_SPEED_25GB:
5231                 speed = "25 G";
5232                 break;
5233         case I40E_LINK_SPEED_10GB:
5234                 speed = "10 G";
5235                 break;
5236         case I40E_LINK_SPEED_1GB:
5237                 speed = "1000 M";
5238                 break;
5239         case I40E_LINK_SPEED_100MB:
5240                 speed = "100 M";
5241                 break;
5242         default:
5243                 break;
5244         }
5245
5246         switch (vsi->back->hw.fc.current_mode) {
5247         case I40E_FC_FULL:
5248                 fc = "RX/TX";
5249                 break;
5250         case I40E_FC_TX_PAUSE:
5251                 fc = "TX";
5252                 break;
5253         case I40E_FC_RX_PAUSE:
5254                 fc = "RX";
5255                 break;
5256         default:
5257                 fc = "None";
5258                 break;
5259         }
5260
5261         if (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_25GB) {
5262                 fec = ", FEC: None";
5263                 an = ", Autoneg: False";
5264
5265                 if (vsi->back->hw.phy.link_info.an_info & I40E_AQ_AN_COMPLETED)
5266                         an = ", Autoneg: True";
5267
5268                 if (vsi->back->hw.phy.link_info.fec_info &
5269                     I40E_AQ_CONFIG_FEC_KR_ENA)
5270                         fec = ", FEC: CL74 FC-FEC/BASE-R";
5271                 else if (vsi->back->hw.phy.link_info.fec_info &
5272                          I40E_AQ_CONFIG_FEC_RS_ENA)
5273                         fec = ", FEC: CL108 RS-FEC";
5274         }
5275
5276         netdev_info(vsi->netdev, "NIC Link is Up, %sbps Full Duplex%s%s, Flow Control: %s\n",
5277                     speed, fec, an, fc);
5278 }
5279
5280 /**
5281  * i40e_up_complete - Finish the last steps of bringing up a connection
5282  * @vsi: the VSI being configured
5283  **/
5284 static int i40e_up_complete(struct i40e_vsi *vsi)
5285 {
5286         struct i40e_pf *pf = vsi->back;
5287         int err;
5288
5289         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5290                 i40e_vsi_configure_msix(vsi);
5291         else
5292                 i40e_configure_msi_and_legacy(vsi);
5293
5294         /* start rings */
5295         err = i40e_vsi_start_rings(vsi);
5296         if (err)
5297                 return err;
5298
5299         clear_bit(__I40E_DOWN, &vsi->state);
5300         i40e_napi_enable_all(vsi);
5301         i40e_vsi_enable_irq(vsi);
5302
5303         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
5304             (vsi->netdev)) {
5305                 i40e_print_link_message(vsi, true);
5306                 netif_tx_start_all_queues(vsi->netdev);
5307                 netif_carrier_on(vsi->netdev);
5308         } else if (vsi->netdev) {
5309                 i40e_print_link_message(vsi, false);
5310                 /* need to check for qualified module here*/
5311                 if ((pf->hw.phy.link_info.link_info &
5312                         I40E_AQ_MEDIA_AVAILABLE) &&
5313                     (!(pf->hw.phy.link_info.an_info &
5314                         I40E_AQ_QUALIFIED_MODULE)))
5315                         netdev_err(vsi->netdev,
5316                                    "the driver failed to link because an unqualified module was detected.");
5317         }
5318
5319         /* replay FDIR SB filters */
5320         if (vsi->type == I40E_VSI_FDIR) {
5321                 /* reset fd counters */
5322                 pf->fd_add_err = 0;
5323                 pf->fd_atr_cnt = 0;
5324                 i40e_fdir_filter_restore(vsi);
5325         }
5326
5327         /* On the next run of the service_task, notify any clients of the new
5328          * opened netdev
5329          */
5330         pf->flags |= I40E_FLAG_SERVICE_CLIENT_REQUESTED;
5331         i40e_service_event_schedule(pf);
5332
5333         return 0;
5334 }
5335
5336 /**
5337  * i40e_vsi_reinit_locked - Reset the VSI
5338  * @vsi: the VSI being configured
5339  *
5340  * Rebuild the ring structs after some configuration
5341  * has changed, e.g. MTU size.
5342  **/
5343 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
5344 {
5345         struct i40e_pf *pf = vsi->back;
5346
5347         WARN_ON(in_interrupt());
5348         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
5349                 usleep_range(1000, 2000);
5350         i40e_down(vsi);
5351
5352         i40e_up(vsi);
5353         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
5354 }
5355
5356 /**
5357  * i40e_up - Bring the connection back up after being down
5358  * @vsi: the VSI being configured
5359  **/
5360 int i40e_up(struct i40e_vsi *vsi)
5361 {
5362         int err;
5363
5364         err = i40e_vsi_configure(vsi);
5365         if (!err)
5366                 err = i40e_up_complete(vsi);
5367
5368         return err;
5369 }
5370
5371 /**
5372  * i40e_down - Shutdown the connection processing
5373  * @vsi: the VSI being stopped
5374  **/
5375 void i40e_down(struct i40e_vsi *vsi)
5376 {
5377         int i;
5378
5379         /* It is assumed that the caller of this function
5380          * sets the vsi->state __I40E_DOWN bit.
5381          */
5382         if (vsi->netdev) {
5383                 netif_carrier_off(vsi->netdev);
5384                 netif_tx_disable(vsi->netdev);
5385         }
5386         i40e_vsi_disable_irq(vsi);
5387         i40e_vsi_stop_rings(vsi);
5388         i40e_napi_disable_all(vsi);
5389
5390         for (i = 0; i < vsi->num_queue_pairs; i++) {
5391                 i40e_clean_tx_ring(vsi->tx_rings[i]);
5392                 i40e_clean_rx_ring(vsi->rx_rings[i]);
5393         }
5394
5395 }
5396
5397 /**
5398  * i40e_setup_tc - configure multiple traffic classes
5399  * @netdev: net device to configure
5400  * @tc: number of traffic classes to enable
5401  **/
5402 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
5403 {
5404         struct i40e_netdev_priv *np = netdev_priv(netdev);
5405         struct i40e_vsi *vsi = np->vsi;
5406         struct i40e_pf *pf = vsi->back;
5407         u8 enabled_tc = 0;
5408         int ret = -EINVAL;
5409         int i;
5410
5411         /* Check if DCB enabled to continue */
5412         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
5413                 netdev_info(netdev, "DCB is not enabled for adapter\n");
5414                 goto exit;
5415         }
5416
5417         /* Check if MFP enabled */
5418         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
5419                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
5420                 goto exit;
5421         }
5422
5423         /* Check whether tc count is within enabled limit */
5424         if (tc > i40e_pf_get_num_tc(pf)) {
5425                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
5426                 goto exit;
5427         }
5428
5429         /* Generate TC map for number of tc requested */
5430         for (i = 0; i < tc; i++)
5431                 enabled_tc |= BIT(i);
5432
5433         /* Requesting same TC configuration as already enabled */
5434         if (enabled_tc == vsi->tc_config.enabled_tc)
5435                 return 0;
5436
5437         /* Quiesce VSI queues */
5438         i40e_quiesce_vsi(vsi);
5439
5440         /* Configure VSI for enabled TCs */
5441         ret = i40e_vsi_config_tc(vsi, enabled_tc);
5442         if (ret) {
5443                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
5444                             vsi->seid);
5445                 goto exit;
5446         }
5447
5448         /* Unquiesce VSI */
5449         i40e_unquiesce_vsi(vsi);
5450
5451 exit:
5452         return ret;
5453 }
5454
5455 static int __i40e_setup_tc(struct net_device *netdev, u32 handle, __be16 proto,
5456                            struct tc_to_netdev *tc)
5457 {
5458         if (tc->type != TC_SETUP_MQPRIO)
5459                 return -EINVAL;
5460
5461         tc->mqprio->hw = TC_MQPRIO_HW_OFFLOAD_TCS;
5462
5463         return i40e_setup_tc(netdev, tc->mqprio->num_tc);
5464 }
5465
5466 /**
5467  * i40e_open - Called when a network interface is made active
5468  * @netdev: network interface device structure
5469  *
5470  * The open entry point is called when a network interface is made
5471  * active by the system (IFF_UP).  At this point all resources needed
5472  * for transmit and receive operations are allocated, the interrupt
5473  * handler is registered with the OS, the netdev watchdog subtask is
5474  * enabled, and the stack is notified that the interface is ready.
5475  *
5476  * Returns 0 on success, negative value on failure
5477  **/
5478 int i40e_open(struct net_device *netdev)
5479 {
5480         struct i40e_netdev_priv *np = netdev_priv(netdev);
5481         struct i40e_vsi *vsi = np->vsi;
5482         struct i40e_pf *pf = vsi->back;
5483         int err;
5484
5485         /* disallow open during test or if eeprom is broken */
5486         if (test_bit(__I40E_TESTING, &pf->state) ||
5487             test_bit(__I40E_BAD_EEPROM, &pf->state))
5488                 return -EBUSY;
5489
5490         netif_carrier_off(netdev);
5491
5492         err = i40e_vsi_open(vsi);
5493         if (err)
5494                 return err;
5495
5496         /* configure global TSO hardware offload settings */
5497         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
5498                                                        TCP_FLAG_FIN) >> 16);
5499         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
5500                                                        TCP_FLAG_FIN |
5501                                                        TCP_FLAG_CWR) >> 16);
5502         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
5503
5504         udp_tunnel_get_rx_info(netdev);
5505
5506         return 0;
5507 }
5508
5509 /**
5510  * i40e_vsi_open -
5511  * @vsi: the VSI to open
5512  *
5513  * Finish initialization of the VSI.
5514  *
5515  * Returns 0 on success, negative value on failure
5516  *
5517  * Note: expects to be called while under rtnl_lock()
5518  **/
5519 int i40e_vsi_open(struct i40e_vsi *vsi)
5520 {
5521         struct i40e_pf *pf = vsi->back;
5522         char int_name[I40E_INT_NAME_STR_LEN];
5523         int err;
5524
5525         /* allocate descriptors */
5526         err = i40e_vsi_setup_tx_resources(vsi);
5527         if (err)
5528                 goto err_setup_tx;
5529         err = i40e_vsi_setup_rx_resources(vsi);
5530         if (err)
5531                 goto err_setup_rx;
5532
5533         err = i40e_vsi_configure(vsi);
5534         if (err)
5535                 goto err_setup_rx;
5536
5537         if (vsi->netdev) {
5538                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
5539                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
5540                 err = i40e_vsi_request_irq(vsi, int_name);
5541                 if (err)
5542                         goto err_setup_rx;
5543
5544                 /* Notify the stack of the actual queue counts. */
5545                 err = netif_set_real_num_tx_queues(vsi->netdev,
5546                                                    vsi->num_queue_pairs);
5547                 if (err)
5548                         goto err_set_queues;
5549
5550                 err = netif_set_real_num_rx_queues(vsi->netdev,
5551                                                    vsi->num_queue_pairs);
5552                 if (err)
5553                         goto err_set_queues;
5554
5555         } else if (vsi->type == I40E_VSI_FDIR) {
5556                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
5557                          dev_driver_string(&pf->pdev->dev),
5558                          dev_name(&pf->pdev->dev));
5559                 err = i40e_vsi_request_irq(vsi, int_name);
5560
5561         } else {
5562                 err = -EINVAL;
5563                 goto err_setup_rx;
5564         }
5565
5566         err = i40e_up_complete(vsi);
5567         if (err)
5568                 goto err_up_complete;
5569
5570         return 0;
5571
5572 err_up_complete:
5573         i40e_down(vsi);
5574 err_set_queues:
5575         i40e_vsi_free_irq(vsi);
5576 err_setup_rx:
5577         i40e_vsi_free_rx_resources(vsi);
5578 err_setup_tx:
5579         i40e_vsi_free_tx_resources(vsi);
5580         if (vsi == pf->vsi[pf->lan_vsi])
5581                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED), true);
5582
5583         return err;
5584 }
5585
5586 /**
5587  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
5588  * @pf: Pointer to PF
5589  *
5590  * This function destroys the hlist where all the Flow Director
5591  * filters were saved.
5592  **/
5593 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
5594 {
5595         struct i40e_fdir_filter *filter;
5596         struct i40e_flex_pit *pit_entry, *tmp;
5597         struct hlist_node *node2;
5598
5599         hlist_for_each_entry_safe(filter, node2,
5600                                   &pf->fdir_filter_list, fdir_node) {
5601                 hlist_del(&filter->fdir_node);
5602                 kfree(filter);
5603         }
5604
5605         list_for_each_entry_safe(pit_entry, tmp, &pf->l3_flex_pit_list, list) {
5606                 list_del(&pit_entry->list);
5607                 kfree(pit_entry);
5608         }
5609         INIT_LIST_HEAD(&pf->l3_flex_pit_list);
5610
5611         list_for_each_entry_safe(pit_entry, tmp, &pf->l4_flex_pit_list, list) {
5612                 list_del(&pit_entry->list);
5613                 kfree(pit_entry);
5614         }
5615         INIT_LIST_HEAD(&pf->l4_flex_pit_list);
5616
5617         pf->fdir_pf_active_filters = 0;
5618         pf->fd_tcp4_filter_cnt = 0;
5619         pf->fd_udp4_filter_cnt = 0;
5620         pf->fd_sctp4_filter_cnt = 0;
5621         pf->fd_ip4_filter_cnt = 0;
5622
5623         /* Reprogram the default input set for TCP/IPv4 */
5624         i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV4_TCP,
5625                                 I40E_L3_SRC_MASK | I40E_L3_DST_MASK |
5626                                 I40E_L4_SRC_MASK | I40E_L4_DST_MASK);
5627
5628         /* Reprogram the default input set for UDP/IPv4 */
5629         i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV4_UDP,
5630                                 I40E_L3_SRC_MASK | I40E_L3_DST_MASK |
5631                                 I40E_L4_SRC_MASK | I40E_L4_DST_MASK);
5632
5633         /* Reprogram the default input set for SCTP/IPv4 */
5634         i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV4_SCTP,
5635                                 I40E_L3_SRC_MASK | I40E_L3_DST_MASK |
5636                                 I40E_L4_SRC_MASK | I40E_L4_DST_MASK);
5637
5638         /* Reprogram the default input set for Other/IPv4 */
5639         i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV4_OTHER,
5640                                 I40E_L3_SRC_MASK | I40E_L3_DST_MASK);
5641 }
5642
5643 /**
5644  * i40e_close - Disables a network interface
5645  * @netdev: network interface device structure
5646  *
5647  * The close entry point is called when an interface is de-activated
5648  * by the OS.  The hardware is still under the driver's control, but
5649  * this netdev interface is disabled.
5650  *
5651  * Returns 0, this is not allowed to fail
5652  **/
5653 int i40e_close(struct net_device *netdev)
5654 {
5655         struct i40e_netdev_priv *np = netdev_priv(netdev);
5656         struct i40e_vsi *vsi = np->vsi;
5657
5658         i40e_vsi_close(vsi);
5659
5660         return 0;
5661 }
5662
5663 /**
5664  * i40e_do_reset - Start a PF or Core Reset sequence
5665  * @pf: board private structure
5666  * @reset_flags: which reset is requested
5667  * @lock_acquired: indicates whether or not the lock has been acquired
5668  * before this function was called.
5669  *
5670  * The essential difference in resets is that the PF Reset
5671  * doesn't clear the packet buffers, doesn't reset the PE
5672  * firmware, and doesn't bother the other PFs on the chip.
5673  **/
5674 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags, bool lock_acquired)
5675 {
5676         u32 val;
5677
5678         WARN_ON(in_interrupt());
5679
5680
5681         /* do the biggest reset indicated */
5682         if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {
5683
5684                 /* Request a Global Reset
5685                  *
5686                  * This will start the chip's countdown to the actual full
5687                  * chip reset event, and a warning interrupt to be sent
5688                  * to all PFs, including the requestor.  Our handler
5689                  * for the warning interrupt will deal with the shutdown
5690                  * and recovery of the switch setup.
5691                  */
5692                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
5693                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5694                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
5695                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5696
5697         } else if (reset_flags & BIT_ULL(__I40E_CORE_RESET_REQUESTED)) {
5698
5699                 /* Request a Core Reset
5700                  *
5701                  * Same as Global Reset, except does *not* include the MAC/PHY
5702                  */
5703                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
5704                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5705                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
5706                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5707                 i40e_flush(&pf->hw);
5708
5709         } else if (reset_flags & BIT_ULL(__I40E_PF_RESET_REQUESTED)) {
5710
5711                 /* Request a PF Reset
5712                  *
5713                  * Resets only the PF-specific registers
5714                  *
5715                  * This goes directly to the tear-down and rebuild of
5716                  * the switch, since we need to do all the recovery as
5717                  * for the Core Reset.
5718                  */
5719                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5720                 i40e_handle_reset_warning(pf, lock_acquired);
5721
5722         } else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) {
5723                 int v;
5724
5725                 /* Find the VSI(s) that requested a re-init */
5726                 dev_info(&pf->pdev->dev,
5727                          "VSI reinit requested\n");
5728                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5729                         struct i40e_vsi *vsi = pf->vsi[v];
5730
5731                         if (vsi != NULL &&
5732                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5733                                 i40e_vsi_reinit_locked(pf->vsi[v]);
5734                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5735                         }
5736                 }
5737         } else if (reset_flags & BIT_ULL(__I40E_DOWN_REQUESTED)) {
5738                 int v;
5739
5740                 /* Find the VSI(s) that needs to be brought down */
5741                 dev_info(&pf->pdev->dev, "VSI down requested\n");
5742                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5743                         struct i40e_vsi *vsi = pf->vsi[v];
5744
5745                         if (vsi != NULL &&
5746                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5747                                 set_bit(__I40E_DOWN, &vsi->state);
5748                                 i40e_down(vsi);
5749                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5750                         }
5751                 }
5752         } else {
5753                 dev_info(&pf->pdev->dev,
5754                          "bad reset request 0x%08x\n", reset_flags);
5755         }
5756 }
5757
5758 #ifdef CONFIG_I40E_DCB
5759 /**
5760  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
5761  * @pf: board private structure
5762  * @old_cfg: current DCB config
5763  * @new_cfg: new DCB config
5764  **/
5765 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
5766                             struct i40e_dcbx_config *old_cfg,
5767                             struct i40e_dcbx_config *new_cfg)
5768 {
5769         bool need_reconfig = false;
5770
5771         /* Check if ETS configuration has changed */
5772         if (memcmp(&new_cfg->etscfg,
5773                    &old_cfg->etscfg,
5774                    sizeof(new_cfg->etscfg))) {
5775                 /* If Priority Table has changed reconfig is needed */
5776                 if (memcmp(&new_cfg->etscfg.prioritytable,
5777                            &old_cfg->etscfg.prioritytable,
5778                            sizeof(new_cfg->etscfg.prioritytable))) {
5779                         need_reconfig = true;
5780                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
5781                 }
5782
5783                 if (memcmp(&new_cfg->etscfg.tcbwtable,
5784                            &old_cfg->etscfg.tcbwtable,
5785                            sizeof(new_cfg->etscfg.tcbwtable)))
5786                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5787
5788                 if (memcmp(&new_cfg->etscfg.tsatable,
5789                            &old_cfg->etscfg.tsatable,
5790                            sizeof(new_cfg->etscfg.tsatable)))
5791                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5792         }
5793
5794         /* Check if PFC configuration has changed */
5795         if (memcmp(&new_cfg->pfc,
5796                    &old_cfg->pfc,
5797                    sizeof(new_cfg->pfc))) {
5798                 need_reconfig = true;
5799                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5800         }
5801
5802         /* Check if APP Table has changed */
5803         if (memcmp(&new_cfg->app,
5804                    &old_cfg->app,
5805                    sizeof(new_cfg->app))) {
5806                 need_reconfig = true;
5807                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5808         }
5809
5810         dev_dbg(&pf->pdev->dev, "dcb need_reconfig=%d\n", need_reconfig);
5811         return need_reconfig;
5812 }
5813
5814 /**
5815  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5816  * @pf: board private structure
5817  * @e: event info posted on ARQ
5818  **/
5819 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5820                                   struct i40e_arq_event_info *e)
5821 {
5822         struct i40e_aqc_lldp_get_mib *mib =
5823                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5824         struct i40e_hw *hw = &pf->hw;
5825         struct i40e_dcbx_config tmp_dcbx_cfg;
5826         bool need_reconfig = false;
5827         int ret = 0;
5828         u8 type;
5829
5830         /* Not DCB capable or capability disabled */
5831         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5832                 return ret;
5833
5834         /* Ignore if event is not for Nearest Bridge */
5835         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5836                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5837         dev_dbg(&pf->pdev->dev, "LLDP event mib bridge type 0x%x\n", type);
5838         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5839                 return ret;
5840
5841         /* Check MIB Type and return if event for Remote MIB update */
5842         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5843         dev_dbg(&pf->pdev->dev,
5844                 "LLDP event mib type %s\n", type ? "remote" : "local");
5845         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5846                 /* Update the remote cached instance and return */
5847                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5848                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5849                                 &hw->remote_dcbx_config);
5850                 goto exit;
5851         }
5852
5853         /* Store the old configuration */
5854         tmp_dcbx_cfg = hw->local_dcbx_config;
5855
5856         /* Reset the old DCBx configuration data */
5857         memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
5858         /* Get updated DCBX data from firmware */
5859         ret = i40e_get_dcb_config(&pf->hw);
5860         if (ret) {
5861                 dev_info(&pf->pdev->dev,
5862                          "Failed querying DCB configuration data from firmware, err %s aq_err %s\n",
5863                          i40e_stat_str(&pf->hw, ret),
5864                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5865                 goto exit;
5866         }
5867
5868         /* No change detected in DCBX configs */
5869         if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
5870                     sizeof(tmp_dcbx_cfg))) {
5871                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5872                 goto exit;
5873         }
5874
5875         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
5876                                                &hw->local_dcbx_config);
5877
5878         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
5879
5880         if (!need_reconfig)
5881                 goto exit;
5882
5883         /* Enable DCB tagging only when more than one TC */
5884         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5885                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5886         else
5887                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5888
5889         set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5890         /* Reconfiguration needed quiesce all VSIs */
5891         i40e_pf_quiesce_all_vsi(pf);
5892
5893         /* Changes in configuration update VEB/VSI */
5894         i40e_dcb_reconfigure(pf);
5895
5896         ret = i40e_resume_port_tx(pf);
5897
5898         clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5899         /* In case of error no point in resuming VSIs */
5900         if (ret)
5901                 goto exit;
5902
5903         /* Wait for the PF's queues to be disabled */
5904         ret = i40e_pf_wait_queues_disabled(pf);
5905         if (ret) {
5906                 /* Schedule PF reset to recover */
5907                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5908                 i40e_service_event_schedule(pf);
5909         } else {
5910                 i40e_pf_unquiesce_all_vsi(pf);
5911         pf->flags |= (I40E_FLAG_SERVICE_CLIENT_REQUESTED |
5912                       I40E_FLAG_CLIENT_L2_CHANGE);
5913         }
5914
5915 exit:
5916         return ret;
5917 }
5918 #endif /* CONFIG_I40E_DCB */
5919
5920 /**
5921  * i40e_do_reset_safe - Protected reset path for userland calls.
5922  * @pf: board private structure
5923  * @reset_flags: which reset is requested
5924  *
5925  **/
5926 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5927 {
5928         rtnl_lock();
5929         i40e_do_reset(pf, reset_flags, true);
5930         rtnl_unlock();
5931 }
5932
5933 /**
5934  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5935  * @pf: board private structure
5936  * @e: event info posted on ARQ
5937  *
5938  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5939  * and VF queues
5940  **/
5941 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5942                                            struct i40e_arq_event_info *e)
5943 {
5944         struct i40e_aqc_lan_overflow *data =
5945                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5946         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5947         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5948         struct i40e_hw *hw = &pf->hw;
5949         struct i40e_vf *vf;
5950         u16 vf_id;
5951
5952         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5953                 queue, qtx_ctl);
5954
5955         /* Queue belongs to VF, find the VF and issue VF reset */
5956         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5957             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5958                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5959                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5960                 vf_id -= hw->func_caps.vf_base_id;
5961                 vf = &pf->vf[vf_id];
5962                 i40e_vc_notify_vf_reset(vf);
5963                 /* Allow VF to process pending reset notification */
5964                 msleep(20);
5965                 i40e_reset_vf(vf, false);
5966         }
5967 }
5968
5969 /**
5970  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5971  * @pf: board private structure
5972  **/
5973 u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5974 {
5975         u32 val, fcnt_prog;
5976
5977         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5978         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5979         return fcnt_prog;
5980 }
5981
5982 /**
5983  * i40e_get_current_fd_count - Get total FD filters programmed for this PF
5984  * @pf: board private structure
5985  **/
5986 u32 i40e_get_current_fd_count(struct i40e_pf *pf)
5987 {
5988         u32 val, fcnt_prog;
5989
5990         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5991         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5992                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5993                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5994         return fcnt_prog;
5995 }
5996
5997 /**
5998  * i40e_get_global_fd_count - Get total FD filters programmed on device
5999  * @pf: board private structure
6000  **/
6001 u32 i40e_get_global_fd_count(struct i40e_pf *pf)
6002 {
6003         u32 val, fcnt_prog;
6004
6005         val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
6006         fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
6007                     ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
6008                      I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
6009         return fcnt_prog;
6010 }
6011
6012 /**
6013  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
6014  * @pf: board private structure
6015  **/
6016 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
6017 {
6018         struct i40e_fdir_filter *filter;
6019         u32 fcnt_prog, fcnt_avail;
6020         struct hlist_node *node;
6021
6022         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
6023                 return;
6024
6025         /* Check if, FD SB or ATR was auto disabled and if there is enough room
6026          * to re-enable
6027          */
6028         fcnt_prog = i40e_get_global_fd_count(pf);
6029         fcnt_avail = pf->fdir_pf_filter_count;
6030         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
6031             (pf->fd_add_err == 0) ||
6032             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
6033                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
6034                     (pf->hw_disabled_flags & I40E_FLAG_FD_SB_ENABLED)) {
6035                         pf->hw_disabled_flags &= ~I40E_FLAG_FD_SB_ENABLED;
6036                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
6037                                 dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
6038                 }
6039         }
6040
6041         /* Wait for some more space to be available to turn on ATR. We also
6042          * must check that no existing ntuple rules for TCP are in effect
6043          */
6044         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
6045                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
6046                     (pf->hw_disabled_flags & I40E_FLAG_FD_ATR_ENABLED) &&
6047                     (pf->fd_tcp4_filter_cnt == 0)) {
6048                         pf->hw_disabled_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
6049                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
6050                                 dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table and there are no conflicting ntuple rules\n");
6051                 }
6052         }
6053
6054         /* if hw had a problem adding a filter, delete it */
6055         if (pf->fd_inv > 0) {
6056                 hlist_for_each_entry_safe(filter, node,
6057                                           &pf->fdir_filter_list, fdir_node) {
6058                         if (filter->fd_id == pf->fd_inv) {
6059                                 hlist_del(&filter->fdir_node);
6060                                 kfree(filter);
6061                                 pf->fdir_pf_active_filters--;
6062                         }
6063                 }
6064         }
6065 }
6066
6067 #define I40E_MIN_FD_FLUSH_INTERVAL 10
6068 #define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
6069 /**
6070  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
6071  * @pf: board private structure
6072  **/
6073 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
6074 {
6075         unsigned long min_flush_time;
6076         int flush_wait_retry = 50;
6077         bool disable_atr = false;
6078         int fd_room;
6079         int reg;
6080
6081         if (!time_after(jiffies, pf->fd_flush_timestamp +
6082                                  (I40E_MIN_FD_FLUSH_INTERVAL * HZ)))
6083                 return;
6084
6085         /* If the flush is happening too quick and we have mostly SB rules we
6086          * should not re-enable ATR for some time.
6087          */
6088         min_flush_time = pf->fd_flush_timestamp +
6089                          (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
6090         fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;
6091
6092         if (!(time_after(jiffies, min_flush_time)) &&
6093             (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
6094                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
6095                         dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
6096                 disable_atr = true;
6097         }
6098
6099         pf->fd_flush_timestamp = jiffies;
6100         pf->hw_disabled_flags |= I40E_FLAG_FD_ATR_ENABLED;
6101         /* flush all filters */
6102         wr32(&pf->hw, I40E_PFQF_CTL_1,
6103              I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
6104         i40e_flush(&pf->hw);
6105         pf->fd_flush_cnt++;
6106         pf->fd_add_err = 0;
6107         do {
6108                 /* Check FD flush status every 5-6msec */
6109                 usleep_range(5000, 6000);
6110                 reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
6111                 if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
6112                         break;
6113         } while (flush_wait_retry--);
6114         if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
6115                 dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
6116         } else {
6117                 /* replay sideband filters */
6118                 i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
6119                 if (!disable_atr && !pf->fd_tcp4_filter_cnt)
6120                         pf->hw_disabled_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
6121                 clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
6122                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
6123                         dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
6124         }
6125 }
6126
6127 /**
6128  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
6129  * @pf: board private structure
6130  **/
6131 u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
6132 {
6133         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
6134 }
6135
6136 /* We can see up to 256 filter programming desc in transit if the filters are
6137  * being applied really fast; before we see the first
6138  * filter miss error on Rx queue 0. Accumulating enough error messages before
6139  * reacting will make sure we don't cause flush too often.
6140  */
6141 #define I40E_MAX_FD_PROGRAM_ERROR 256
6142
6143 /**
6144  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
6145  * @pf: board private structure
6146  **/
6147 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
6148 {
6149
6150         /* if interface is down do nothing */
6151         if (test_bit(__I40E_DOWN, &pf->state))
6152                 return;
6153
6154         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
6155                 i40e_fdir_flush_and_replay(pf);
6156
6157         i40e_fdir_check_and_reenable(pf);
6158
6159 }
6160
6161 /**
6162  * i40e_vsi_link_event - notify VSI of a link event
6163  * @vsi: vsi to be notified
6164  * @link_up: link up or down
6165  **/
6166 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
6167 {
6168         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
6169                 return;
6170
6171         switch (vsi->type) {
6172         case I40E_VSI_MAIN:
6173                 if (!vsi->netdev || !vsi->netdev_registered)
6174                         break;
6175
6176                 if (link_up) {
6177                         netif_carrier_on(vsi->netdev);
6178                         netif_tx_wake_all_queues(vsi->netdev);
6179                 } else {
6180                         netif_carrier_off(vsi->netdev);
6181                         netif_tx_stop_all_queues(vsi->netdev);
6182                 }
6183                 break;
6184
6185         case I40E_VSI_SRIOV:
6186         case I40E_VSI_VMDQ2:
6187         case I40E_VSI_CTRL:
6188         case I40E_VSI_IWARP:
6189         case I40E_VSI_MIRROR:
6190         default:
6191                 /* there is no notification for other VSIs */
6192                 break;
6193         }
6194 }
6195
6196 /**
6197  * i40e_veb_link_event - notify elements on the veb of a link event
6198  * @veb: veb to be notified
6199  * @link_up: link up or down
6200  **/
6201 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
6202 {
6203         struct i40e_pf *pf;
6204         int i;
6205
6206         if (!veb || !veb->pf)
6207                 return;
6208         pf = veb->pf;
6209
6210         /* depth first... */
6211         for (i = 0; i < I40E_MAX_VEB; i++)
6212                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
6213                         i40e_veb_link_event(pf->veb[i], link_up);
6214
6215         /* ... now the local VSIs */
6216         for (i = 0; i < pf->num_alloc_vsi; i++)
6217                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
6218                         i40e_vsi_link_event(pf->vsi[i], link_up);
6219 }
6220
6221 /**
6222  * i40e_link_event - Update netif_carrier status
6223  * @pf: board private structure
6224  **/
6225 static void i40e_link_event(struct i40e_pf *pf)
6226 {
6227         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6228         u8 new_link_speed, old_link_speed;
6229         i40e_status status;
6230         bool new_link, old_link;
6231
6232         /* save off old link status information */
6233         pf->hw.phy.link_info_old = pf->hw.phy.link_info;
6234
6235         /* set this to force the get_link_status call to refresh state */
6236         pf->hw.phy.get_link_info = true;
6237
6238         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
6239
6240         status = i40e_get_link_status(&pf->hw, &new_link);
6241
6242         /* On success, disable temp link polling */
6243         if (status == I40E_SUCCESS) {
6244                 if (pf->flags & I40E_FLAG_TEMP_LINK_POLLING)
6245                         pf->flags &= ~I40E_FLAG_TEMP_LINK_POLLING;
6246         } else {
6247                 /* Enable link polling temporarily until i40e_get_link_status
6248                  * returns I40E_SUCCESS
6249                  */
6250                 pf->flags |= I40E_FLAG_TEMP_LINK_POLLING;
6251                 dev_dbg(&pf->pdev->dev, "couldn't get link state, status: %d\n",
6252                         status);
6253                 return;
6254         }
6255
6256         old_link_speed = pf->hw.phy.link_info_old.link_speed;
6257         new_link_speed = pf->hw.phy.link_info.link_speed;
6258
6259         if (new_link == old_link &&
6260             new_link_speed == old_link_speed &&
6261             (test_bit(__I40E_DOWN, &vsi->state) ||
6262              new_link == netif_carrier_ok(vsi->netdev)))
6263                 return;
6264
6265         if (!test_bit(__I40E_DOWN, &vsi->state))
6266                 i40e_print_link_message(vsi, new_link);
6267
6268         /* Notify the base of the switch tree connected to
6269          * the link.  Floating VEBs are not notified.
6270          */
6271         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
6272                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
6273         else
6274                 i40e_vsi_link_event(vsi, new_link);
6275
6276         if (pf->vf)
6277                 i40e_vc_notify_link_state(pf);
6278
6279         if (pf->flags & I40E_FLAG_PTP)
6280                 i40e_ptp_set_increment(pf);
6281 }
6282
6283 /**
6284  * i40e_watchdog_subtask - periodic checks not using event driven response
6285  * @pf: board private structure
6286  **/
6287 static void i40e_watchdog_subtask(struct i40e_pf *pf)
6288 {
6289         int i;
6290
6291         /* if interface is down do nothing */
6292         if (test_bit(__I40E_DOWN, &pf->state) ||
6293             test_bit(__I40E_CONFIG_BUSY, &pf->state))
6294                 return;
6295
6296         /* make sure we don't do these things too often */
6297         if (time_before(jiffies, (pf->service_timer_previous +
6298                                   pf->service_timer_period)))
6299                 return;
6300         pf->service_timer_previous = jiffies;
6301
6302         if ((pf->flags & I40E_FLAG_LINK_POLLING_ENABLED) ||
6303             (pf->flags & I40E_FLAG_TEMP_LINK_POLLING))
6304                 i40e_link_event(pf);
6305
6306         /* Update the stats for active netdevs so the network stack
6307          * can look at updated numbers whenever it cares to
6308          */
6309         for (i = 0; i < pf->num_alloc_vsi; i++)
6310                 if (pf->vsi[i] && pf->vsi[i]->netdev)
6311                         i40e_update_stats(pf->vsi[i]);
6312
6313         if (pf->flags & I40E_FLAG_VEB_STATS_ENABLED) {
6314                 /* Update the stats for the active switching components */
6315                 for (i = 0; i < I40E_MAX_VEB; i++)
6316                         if (pf->veb[i])
6317                                 i40e_update_veb_stats(pf->veb[i]);
6318         }
6319
6320         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
6321 }
6322
6323 /**
6324  * i40e_reset_subtask - Set up for resetting the device and driver
6325  * @pf: board private structure
6326  **/
6327 static void i40e_reset_subtask(struct i40e_pf *pf)
6328 {
6329         u32 reset_flags = 0;
6330
6331         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
6332                 reset_flags |= BIT(__I40E_REINIT_REQUESTED);
6333                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
6334         }
6335         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
6336                 reset_flags |= BIT(__I40E_PF_RESET_REQUESTED);
6337                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6338         }
6339         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
6340                 reset_flags |= BIT(__I40E_CORE_RESET_REQUESTED);
6341                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
6342         }
6343         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
6344                 reset_flags |= BIT(__I40E_GLOBAL_RESET_REQUESTED);
6345                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
6346         }
6347         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
6348                 reset_flags |= BIT(__I40E_DOWN_REQUESTED);
6349                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
6350         }
6351
6352         /* If there's a recovery already waiting, it takes
6353          * precedence before starting a new reset sequence.
6354          */
6355         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
6356                 i40e_prep_for_reset(pf, false);
6357                 i40e_reset(pf);
6358                 i40e_rebuild(pf, false, false);
6359         }
6360
6361         /* If we're already down or resetting, just bail */
6362         if (reset_flags &&
6363             !test_bit(__I40E_DOWN, &pf->state) &&
6364             !test_bit(__I40E_CONFIG_BUSY, &pf->state)) {
6365                 rtnl_lock();
6366                 i40e_do_reset(pf, reset_flags, true);
6367                 rtnl_unlock();
6368         }
6369 }
6370
6371 /**
6372  * i40e_handle_link_event - Handle link event
6373  * @pf: board private structure
6374  * @e: event info posted on ARQ
6375  **/
6376 static void i40e_handle_link_event(struct i40e_pf *pf,
6377                                    struct i40e_arq_event_info *e)
6378 {
6379         struct i40e_aqc_get_link_status *status =
6380                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
6381
6382         /* Do a new status request to re-enable LSE reporting
6383          * and load new status information into the hw struct
6384          * This completely ignores any state information
6385          * in the ARQ event info, instead choosing to always
6386          * issue the AQ update link status command.
6387          */
6388         i40e_link_event(pf);
6389
6390         /* check for unqualified module, if link is down */
6391         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
6392             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
6393             (!(status->link_info & I40E_AQ_LINK_UP)))
6394                 dev_err(&pf->pdev->dev,
6395                         "The driver failed to link because an unqualified module was detected.\n");
6396 }
6397
6398 /**
6399  * i40e_clean_adminq_subtask - Clean the AdminQ rings
6400  * @pf: board private structure
6401  **/
6402 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
6403 {
6404         struct i40e_arq_event_info event;
6405         struct i40e_hw *hw = &pf->hw;
6406         u16 pending, i = 0;
6407         i40e_status ret;
6408         u16 opcode;
6409         u32 oldval;
6410         u32 val;
6411
6412         /* Do not run clean AQ when PF reset fails */
6413         if (test_bit(__I40E_RESET_FAILED, &pf->state))
6414                 return;
6415
6416         /* check for error indications */
6417         val = rd32(&pf->hw, pf->hw.aq.arq.len);
6418         oldval = val;
6419         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
6420                 if (hw->debug_mask & I40E_DEBUG_AQ)
6421                         dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
6422                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
6423         }
6424         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
6425                 if (hw->debug_mask & I40E_DEBUG_AQ)
6426                         dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
6427                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
6428                 pf->arq_overflows++;
6429         }
6430         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
6431                 if (hw->debug_mask & I40E_DEBUG_AQ)
6432                         dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
6433                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
6434         }
6435         if (oldval != val)
6436                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
6437
6438         val = rd32(&pf->hw, pf->hw.aq.asq.len);
6439         oldval = val;
6440         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
6441                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6442                         dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
6443                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
6444         }
6445         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
6446                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6447                         dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
6448                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
6449         }
6450         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
6451                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6452                         dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
6453                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
6454         }
6455         if (oldval != val)
6456                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
6457
6458         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
6459         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
6460         if (!event.msg_buf)
6461                 return;
6462
6463         do {
6464                 ret = i40e_clean_arq_element(hw, &event, &pending);
6465                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
6466                         break;
6467                 else if (ret) {
6468                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
6469                         break;
6470                 }
6471
6472                 opcode = le16_to_cpu(event.desc.opcode);
6473                 switch (opcode) {
6474
6475                 case i40e_aqc_opc_get_link_status:
6476                         i40e_handle_link_event(pf, &event);
6477                         break;
6478                 case i40e_aqc_opc_send_msg_to_pf:
6479                         ret = i40e_vc_process_vf_msg(pf,
6480                                         le16_to_cpu(event.desc.retval),
6481                                         le32_to_cpu(event.desc.cookie_high),
6482                                         le32_to_cpu(event.desc.cookie_low),
6483                                         event.msg_buf,
6484                                         event.msg_len);
6485                         break;
6486                 case i40e_aqc_opc_lldp_update_mib:
6487                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
6488 #ifdef CONFIG_I40E_DCB
6489                         rtnl_lock();
6490                         ret = i40e_handle_lldp_event(pf, &event);
6491                         rtnl_unlock();
6492 #endif /* CONFIG_I40E_DCB */
6493                         break;
6494                 case i40e_aqc_opc_event_lan_overflow:
6495                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
6496                         i40e_handle_lan_overflow_event(pf, &event);
6497                         break;
6498                 case i40e_aqc_opc_send_msg_to_peer:
6499                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
6500                         break;
6501                 case i40e_aqc_opc_nvm_erase:
6502                 case i40e_aqc_opc_nvm_update:
6503                 case i40e_aqc_opc_oem_post_update:
6504                         i40e_debug(&pf->hw, I40E_DEBUG_NVM,
6505                                    "ARQ NVM operation 0x%04x completed\n",
6506                                    opcode);
6507                         break;
6508                 default:
6509                         dev_info(&pf->pdev->dev,
6510                                  "ARQ: Unknown event 0x%04x ignored\n",
6511                                  opcode);
6512                         break;
6513                 }
6514         } while (i++ < pf->adminq_work_limit);
6515
6516         if (i < pf->adminq_work_limit)
6517                 clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
6518
6519         /* re-enable Admin queue interrupt cause */
6520         val = rd32(hw, I40E_PFINT_ICR0_ENA);
6521         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
6522         wr32(hw, I40E_PFINT_ICR0_ENA, val);
6523         i40e_flush(hw);
6524
6525         kfree(event.msg_buf);
6526 }
6527
6528 /**
6529  * i40e_verify_eeprom - make sure eeprom is good to use
6530  * @pf: board private structure
6531  **/
6532 static void i40e_verify_eeprom(struct i40e_pf *pf)
6533 {
6534         int err;
6535
6536         err = i40e_diag_eeprom_test(&pf->hw);
6537         if (err) {
6538                 /* retry in case of garbage read */
6539                 err = i40e_diag_eeprom_test(&pf->hw);
6540                 if (err) {
6541                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
6542                                  err);
6543                         set_bit(__I40E_BAD_EEPROM, &pf->state);
6544                 }
6545         }
6546
6547         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
6548                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
6549                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
6550         }
6551 }
6552
6553 /**
6554  * i40e_enable_pf_switch_lb
6555  * @pf: pointer to the PF structure
6556  *
6557  * enable switch loop back or die - no point in a return value
6558  **/
6559 static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
6560 {
6561         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6562         struct i40e_vsi_context ctxt;
6563         int ret;
6564
6565         ctxt.seid = pf->main_vsi_seid;
6566         ctxt.pf_num = pf->hw.pf_id;
6567         ctxt.vf_num = 0;
6568         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6569         if (ret) {
6570                 dev_info(&pf->pdev->dev,
6571                          "couldn't get PF vsi config, err %s aq_err %s\n",
6572                          i40e_stat_str(&pf->hw, ret),
6573                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6574                 return;
6575         }
6576         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6577         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6578         ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6579
6580         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6581         if (ret) {
6582                 dev_info(&pf->pdev->dev,
6583                          "update vsi switch failed, err %s aq_err %s\n",
6584                          i40e_stat_str(&pf->hw, ret),
6585                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6586         }
6587 }
6588
6589 /**
6590  * i40e_disable_pf_switch_lb
6591  * @pf: pointer to the PF structure
6592  *
6593  * disable switch loop back or die - no point in a return value
6594  **/
6595 static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
6596 {
6597         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6598         struct i40e_vsi_context ctxt;
6599         int ret;
6600
6601         ctxt.seid = pf->main_vsi_seid;
6602         ctxt.pf_num = pf->hw.pf_id;
6603         ctxt.vf_num = 0;
6604         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6605         if (ret) {
6606                 dev_info(&pf->pdev->dev,
6607                          "couldn't get PF vsi config, err %s aq_err %s\n",
6608                          i40e_stat_str(&pf->hw, ret),
6609                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6610                 return;
6611         }
6612         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6613         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6614         ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6615
6616         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6617         if (ret) {
6618                 dev_info(&pf->pdev->dev,
6619                          "update vsi switch failed, err %s aq_err %s\n",
6620                          i40e_stat_str(&pf->hw, ret),
6621                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6622         }
6623 }
6624
6625 /**
6626  * i40e_config_bridge_mode - Configure the HW bridge mode
6627  * @veb: pointer to the bridge instance
6628  *
6629  * Configure the loop back mode for the LAN VSI that is downlink to the
6630  * specified HW bridge instance. It is expected this function is called
6631  * when a new HW bridge is instantiated.
6632  **/
6633 static void i40e_config_bridge_mode(struct i40e_veb *veb)
6634 {
6635         struct i40e_pf *pf = veb->pf;
6636
6637         if (pf->hw.debug_mask & I40E_DEBUG_LAN)
6638                 dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
6639                          veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
6640         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
6641                 i40e_disable_pf_switch_lb(pf);
6642         else
6643                 i40e_enable_pf_switch_lb(pf);
6644 }
6645
6646 /**
6647  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
6648  * @veb: pointer to the VEB instance
6649  *
6650  * This is a recursive function that first builds the attached VSIs then
6651  * recurses in to build the next layer of VEB.  We track the connections
6652  * through our own index numbers because the seid's from the HW could
6653  * change across the reset.
6654  **/
6655 static int i40e_reconstitute_veb(struct i40e_veb *veb)
6656 {
6657         struct i40e_vsi *ctl_vsi = NULL;
6658         struct i40e_pf *pf = veb->pf;
6659         int v, veb_idx;
6660         int ret;
6661
6662         /* build VSI that owns this VEB, temporarily attached to base VEB */
6663         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
6664                 if (pf->vsi[v] &&
6665                     pf->vsi[v]->veb_idx == veb->idx &&
6666                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
6667                         ctl_vsi = pf->vsi[v];
6668                         break;
6669                 }
6670         }
6671         if (!ctl_vsi) {
6672                 dev_info(&pf->pdev->dev,
6673                          "missing owner VSI for veb_idx %d\n", veb->idx);
6674                 ret = -ENOENT;
6675                 goto end_reconstitute;
6676         }
6677         if (ctl_vsi != pf->vsi[pf->lan_vsi])
6678                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6679         ret = i40e_add_vsi(ctl_vsi);
6680         if (ret) {
6681                 dev_info(&pf->pdev->dev,
6682                          "rebuild of veb_idx %d owner VSI failed: %d\n",
6683                          veb->idx, ret);
6684                 goto end_reconstitute;
6685         }
6686         i40e_vsi_reset_stats(ctl_vsi);
6687
6688         /* create the VEB in the switch and move the VSI onto the VEB */
6689         ret = i40e_add_veb(veb, ctl_vsi);
6690         if (ret)
6691                 goto end_reconstitute;
6692
6693         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
6694                 veb->bridge_mode = BRIDGE_MODE_VEB;
6695         else
6696                 veb->bridge_mode = BRIDGE_MODE_VEPA;
6697         i40e_config_bridge_mode(veb);
6698
6699         /* create the remaining VSIs attached to this VEB */
6700         for (v = 0; v < pf->num_alloc_vsi; v++) {
6701                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
6702                         continue;
6703
6704                 if (pf->vsi[v]->veb_idx == veb->idx) {
6705                         struct i40e_vsi *vsi = pf->vsi[v];
6706
6707                         vsi->uplink_seid = veb->seid;
6708                         ret = i40e_add_vsi(vsi);
6709                         if (ret) {
6710                                 dev_info(&pf->pdev->dev,
6711                                          "rebuild of vsi_idx %d failed: %d\n",
6712                                          v, ret);
6713                                 goto end_reconstitute;
6714                         }
6715                         i40e_vsi_reset_stats(vsi);
6716                 }
6717         }
6718
6719         /* create any VEBs attached to this VEB - RECURSION */
6720         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
6721                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
6722                         pf->veb[veb_idx]->uplink_seid = veb->seid;
6723                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
6724                         if (ret)
6725                                 break;
6726                 }
6727         }
6728
6729 end_reconstitute:
6730         return ret;
6731 }
6732
6733 /**
6734  * i40e_get_capabilities - get info about the HW
6735  * @pf: the PF struct
6736  **/
6737 static int i40e_get_capabilities(struct i40e_pf *pf)
6738 {
6739         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
6740         u16 data_size;
6741         int buf_len;
6742         int err;
6743
6744         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
6745         do {
6746                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
6747                 if (!cap_buf)
6748                         return -ENOMEM;
6749
6750                 /* this loads the data into the hw struct for us */
6751                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
6752                                             &data_size,
6753                                             i40e_aqc_opc_list_func_capabilities,
6754                                             NULL);
6755                 /* data loaded, buffer no longer needed */
6756                 kfree(cap_buf);
6757
6758                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
6759                         /* retry with a larger buffer */
6760                         buf_len = data_size;
6761                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
6762                         dev_info(&pf->pdev->dev,
6763                                  "capability discovery failed, err %s aq_err %s\n",
6764                                  i40e_stat_str(&pf->hw, err),
6765                                  i40e_aq_str(&pf->hw,
6766                                              pf->hw.aq.asq_last_status));
6767                         return -ENODEV;
6768                 }
6769         } while (err);
6770
6771         if (pf->hw.debug_mask & I40E_DEBUG_USER)
6772                 dev_info(&pf->pdev->dev,
6773                          "pf=%d, num_vfs=%d, msix_pf=%d, msix_vf=%d, fd_g=%d, fd_b=%d, pf_max_q=%d num_vsi=%d\n",
6774                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6775                          pf->hw.func_caps.num_msix_vectors,
6776                          pf->hw.func_caps.num_msix_vectors_vf,
6777                          pf->hw.func_caps.fd_filters_guaranteed,
6778                          pf->hw.func_caps.fd_filters_best_effort,
6779                          pf->hw.func_caps.num_tx_qp,
6780                          pf->hw.func_caps.num_vsis);
6781
6782 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6783                        + pf->hw.func_caps.num_vfs)
6784         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6785                 dev_info(&pf->pdev->dev,
6786                          "got num_vsis %d, setting num_vsis to %d\n",
6787                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6788                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6789         }
6790
6791         return 0;
6792 }
6793
6794 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6795
6796 /**
6797  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6798  * @pf: board private structure
6799  **/
6800 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6801 {
6802         struct i40e_vsi *vsi;
6803
6804         /* quick workaround for an NVM issue that leaves a critical register
6805          * uninitialized
6806          */
6807         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6808                 static const u32 hkey[] = {
6809                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6810                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6811                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6812                         0x95b3a76d};
6813                 int i;
6814
6815                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6816                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6817         }
6818
6819         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6820                 return;
6821
6822         /* find existing VSI and see if it needs configuring */
6823         vsi = i40e_find_vsi_by_type(pf, I40E_VSI_FDIR);
6824
6825         /* create a new VSI if none exists */
6826         if (!vsi) {
6827                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6828                                      pf->vsi[pf->lan_vsi]->seid, 0);
6829                 if (!vsi) {
6830                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6831                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6832                         return;
6833                 }
6834         }
6835
6836         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6837 }
6838
6839 /**
6840  * i40e_fdir_teardown - release the Flow Director resources
6841  * @pf: board private structure
6842  **/
6843 static void i40e_fdir_teardown(struct i40e_pf *pf)
6844 {
6845         struct i40e_vsi *vsi;
6846
6847         i40e_fdir_filter_exit(pf);
6848         vsi = i40e_find_vsi_by_type(pf, I40E_VSI_FDIR);
6849         if (vsi)
6850                 i40e_vsi_release(vsi);
6851 }
6852
6853 /**
6854  * i40e_prep_for_reset - prep for the core to reset
6855  * @pf: board private structure
6856  * @lock_acquired: indicates whether or not the lock has been acquired
6857  * before this function was called.
6858  *
6859  * Close up the VFs and other things in prep for PF Reset.
6860   **/
6861 static void i40e_prep_for_reset(struct i40e_pf *pf, bool lock_acquired)
6862 {
6863         struct i40e_hw *hw = &pf->hw;
6864         i40e_status ret = 0;
6865         u32 v;
6866
6867         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6868         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6869                 return;
6870         if (i40e_check_asq_alive(&pf->hw))
6871                 i40e_vc_notify_reset(pf);
6872
6873         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6874
6875         /* quiesce the VSIs and their queues that are not already DOWN */
6876         /* pf_quiesce_all_vsi modifies netdev structures -rtnl_lock needed */
6877         if (!lock_acquired)
6878                 rtnl_lock();
6879         i40e_pf_quiesce_all_vsi(pf);
6880         if (!lock_acquired)
6881                 rtnl_unlock();
6882
6883         for (v = 0; v < pf->num_alloc_vsi; v++) {
6884                 if (pf->vsi[v])
6885                         pf->vsi[v]->seid = 0;
6886         }
6887
6888         i40e_shutdown_adminq(&pf->hw);
6889
6890         /* call shutdown HMC */
6891         if (hw->hmc.hmc_obj) {
6892                 ret = i40e_shutdown_lan_hmc(hw);
6893                 if (ret)
6894                         dev_warn(&pf->pdev->dev,
6895                                  "shutdown_lan_hmc failed: %d\n", ret);
6896         }
6897 }
6898
6899 /**
6900  * i40e_send_version - update firmware with driver version
6901  * @pf: PF struct
6902  */
6903 static void i40e_send_version(struct i40e_pf *pf)
6904 {
6905         struct i40e_driver_version dv;
6906
6907         dv.major_version = DRV_VERSION_MAJOR;
6908         dv.minor_version = DRV_VERSION_MINOR;
6909         dv.build_version = DRV_VERSION_BUILD;
6910         dv.subbuild_version = 0;
6911         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6912         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6913 }
6914
6915 /**
6916  * i40e_reset - wait for core reset to finish reset, reset pf if corer not seen
6917  * @pf: board private structure
6918  **/
6919 static int i40e_reset(struct i40e_pf *pf)
6920 {
6921         struct i40e_hw *hw = &pf->hw;
6922         i40e_status ret;
6923
6924         ret = i40e_pf_reset(hw);
6925         if (ret) {
6926                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6927                 set_bit(__I40E_RESET_FAILED, &pf->state);
6928                 clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
6929         } else {
6930                 pf->pfr_count++;
6931         }
6932         return ret;
6933 }
6934
6935 /**
6936  * i40e_rebuild - rebuild using a saved config
6937  * @pf: board private structure
6938  * @reinit: if the Main VSI needs to re-initialized.
6939  * @lock_acquired: indicates whether or not the lock has been acquired
6940  * before this function was called.
6941  **/
6942 static void i40e_rebuild(struct i40e_pf *pf, bool reinit, bool lock_acquired)
6943 {
6944         struct i40e_hw *hw = &pf->hw;
6945         u8 set_fc_aq_fail = 0;
6946         i40e_status ret;
6947         u32 val;
6948         int v;
6949
6950         if (test_bit(__I40E_DOWN, &pf->state))
6951                 goto clear_recovery;
6952         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6953
6954         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6955         ret = i40e_init_adminq(&pf->hw);
6956         if (ret) {
6957                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, err %s aq_err %s\n",
6958                          i40e_stat_str(&pf->hw, ret),
6959                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6960                 goto clear_recovery;
6961         }
6962
6963         /* re-verify the eeprom if we just had an EMP reset */
6964         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
6965                 i40e_verify_eeprom(pf);
6966
6967         i40e_clear_pxe_mode(hw);
6968         ret = i40e_get_capabilities(pf);
6969         if (ret)
6970                 goto end_core_reset;
6971
6972         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6973                                 hw->func_caps.num_rx_qp, 0, 0);
6974         if (ret) {
6975                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6976                 goto end_core_reset;
6977         }
6978         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6979         if (ret) {
6980                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6981                 goto end_core_reset;
6982         }
6983
6984 #ifdef CONFIG_I40E_DCB
6985         ret = i40e_init_pf_dcb(pf);
6986         if (ret) {
6987                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
6988                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
6989                 /* Continue without DCB enabled */
6990         }
6991 #endif /* CONFIG_I40E_DCB */
6992         /* do basic switch setup */
6993         if (!lock_acquired)
6994                 rtnl_lock();
6995         ret = i40e_setup_pf_switch(pf, reinit);
6996         if (ret)
6997                 goto end_unlock;
6998
6999         /* The driver only wants link up/down and module qualification
7000          * reports from firmware.  Note the negative logic.
7001          */
7002         ret = i40e_aq_set_phy_int_mask(&pf->hw,
7003                                        ~(I40E_AQ_EVENT_LINK_UPDOWN |
7004                                          I40E_AQ_EVENT_MEDIA_NA |
7005                                          I40E_AQ_EVENT_MODULE_QUAL_FAIL), NULL);
7006         if (ret)
7007                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
7008                          i40e_stat_str(&pf->hw, ret),
7009                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7010
7011         /* make sure our flow control settings are restored */
7012         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
7013         if (ret)
7014                 dev_dbg(&pf->pdev->dev, "setting flow control: ret = %s last_status = %s\n",
7015                         i40e_stat_str(&pf->hw, ret),
7016                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7017
7018         /* Rebuild the VSIs and VEBs that existed before reset.
7019          * They are still in our local switch element arrays, so only
7020          * need to rebuild the switch model in the HW.
7021          *
7022          * If there were VEBs but the reconstitution failed, we'll try
7023          * try to recover minimal use by getting the basic PF VSI working.
7024          */
7025         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
7026                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
7027                 /* find the one VEB connected to the MAC, and find orphans */
7028                 for (v = 0; v < I40E_MAX_VEB; v++) {
7029                         if (!pf->veb[v])
7030                                 continue;
7031
7032                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
7033                             pf->veb[v]->uplink_seid == 0) {
7034                                 ret = i40e_reconstitute_veb(pf->veb[v]);
7035
7036                                 if (!ret)
7037                                         continue;
7038
7039                                 /* If Main VEB failed, we're in deep doodoo,
7040                                  * so give up rebuilding the switch and set up
7041                                  * for minimal rebuild of PF VSI.
7042                                  * If orphan failed, we'll report the error
7043                                  * but try to keep going.
7044                                  */
7045                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
7046                                         dev_info(&pf->pdev->dev,
7047                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
7048                                                  ret);
7049                                         pf->vsi[pf->lan_vsi]->uplink_seid
7050                                                                 = pf->mac_seid;
7051                                         break;
7052                                 } else if (pf->veb[v]->uplink_seid == 0) {
7053                                         dev_info(&pf->pdev->dev,
7054                                                  "rebuild of orphan VEB failed: %d\n",
7055                                                  ret);
7056                                 }
7057                         }
7058                 }
7059         }
7060
7061         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
7062                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
7063                 /* no VEB, so rebuild only the Main VSI */
7064                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
7065                 if (ret) {
7066                         dev_info(&pf->pdev->dev,
7067                                  "rebuild of Main VSI failed: %d\n", ret);
7068                         goto end_unlock;
7069                 }
7070         }
7071
7072         /* Reconfigure hardware for allowing smaller MSS in the case
7073          * of TSO, so that we avoid the MDD being fired and causing
7074          * a reset in the case of small MSS+TSO.
7075          */
7076 #define I40E_REG_MSS          0x000E64DC
7077 #define I40E_REG_MSS_MIN_MASK 0x3FF0000
7078 #define I40E_64BYTE_MSS       0x400000
7079         val = rd32(hw, I40E_REG_MSS);
7080         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
7081                 val &= ~I40E_REG_MSS_MIN_MASK;
7082                 val |= I40E_64BYTE_MSS;
7083                 wr32(hw, I40E_REG_MSS, val);
7084         }
7085
7086         if (pf->flags & I40E_FLAG_RESTART_AUTONEG) {
7087                 msleep(75);
7088                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
7089                 if (ret)
7090                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
7091                                  i40e_stat_str(&pf->hw, ret),
7092                                  i40e_aq_str(&pf->hw,
7093                                              pf->hw.aq.asq_last_status));
7094         }
7095         /* reinit the misc interrupt */
7096         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7097                 ret = i40e_setup_misc_vector(pf);
7098
7099         /* Add a filter to drop all Flow control frames from any VSI from being
7100          * transmitted. By doing so we stop a malicious VF from sending out
7101          * PAUSE or PFC frames and potentially controlling traffic for other
7102          * PF/VF VSIs.
7103          * The FW can still send Flow control frames if enabled.
7104          */
7105         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
7106                                                        pf->main_vsi_seid);
7107
7108         /* restart the VSIs that were rebuilt and running before the reset */
7109         i40e_pf_unquiesce_all_vsi(pf);
7110
7111         /* Release the RTNL lock before we start resetting VFs */
7112         if (!lock_acquired)
7113                 rtnl_unlock();
7114
7115         if (pf->num_alloc_vfs) {
7116                 for (v = 0; v < pf->num_alloc_vfs; v++)
7117                         i40e_reset_vf(&pf->vf[v], true);
7118         }
7119
7120         /* tell the firmware that we're starting */
7121         i40e_send_version(pf);
7122
7123         /* We've already released the lock, so don't do it again */
7124         goto end_core_reset;
7125
7126 end_unlock:
7127         if (!lock_acquired)
7128                 rtnl_unlock();
7129 end_core_reset:
7130         clear_bit(__I40E_RESET_FAILED, &pf->state);
7131 clear_recovery:
7132         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
7133 }
7134
7135 /**
7136  * i40e_reset_and_rebuild - reset and rebuild using a saved config
7137  * @pf: board private structure
7138  * @reinit: if the Main VSI needs to re-initialized.
7139  * @lock_acquired: indicates whether or not the lock has been acquired
7140  * before this function was called.
7141  **/
7142 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit,
7143                                    bool lock_acquired)
7144 {
7145         int ret;
7146         /* Now we wait for GRST to settle out.
7147          * We don't have to delete the VEBs or VSIs from the hw switch
7148          * because the reset will make them disappear.
7149          */
7150         ret = i40e_reset(pf);
7151         if (!ret)
7152                 i40e_rebuild(pf, reinit, lock_acquired);
7153 }
7154
7155 /**
7156  * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
7157  * @pf: board private structure
7158  *
7159  * Close up the VFs and other things in prep for a Core Reset,
7160  * then get ready to rebuild the world.
7161  * @lock_acquired: indicates whether or not the lock has been acquired
7162  * before this function was called.
7163  **/
7164 static void i40e_handle_reset_warning(struct i40e_pf *pf, bool lock_acquired)
7165 {
7166         i40e_prep_for_reset(pf, lock_acquired);
7167         i40e_reset_and_rebuild(pf, false, lock_acquired);
7168 }
7169
7170 /**
7171  * i40e_handle_mdd_event
7172  * @pf: pointer to the PF structure
7173  *
7174  * Called from the MDD irq handler to identify possibly malicious vfs
7175  **/
7176 static void i40e_handle_mdd_event(struct i40e_pf *pf)
7177 {
7178         struct i40e_hw *hw = &pf->hw;
7179         bool mdd_detected = false;
7180         bool pf_mdd_detected = false;
7181         struct i40e_vf *vf;
7182         u32 reg;
7183         int i;
7184
7185         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
7186                 return;
7187
7188         /* find what triggered the MDD event */
7189         reg = rd32(hw, I40E_GL_MDET_TX);
7190         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
7191                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
7192                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
7193                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
7194                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
7195                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
7196                                 I40E_GL_MDET_TX_EVENT_SHIFT;
7197                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
7198                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
7199                                 pf->hw.func_caps.base_queue;
7200                 if (netif_msg_tx_err(pf))
7201                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
7202                                  event, queue, pf_num, vf_num);
7203                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
7204                 mdd_detected = true;
7205         }
7206         reg = rd32(hw, I40E_GL_MDET_RX);
7207         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
7208                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
7209                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
7210                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
7211                                 I40E_GL_MDET_RX_EVENT_SHIFT;
7212                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
7213                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
7214                                 pf->hw.func_caps.base_queue;
7215                 if (netif_msg_rx_err(pf))
7216                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
7217                                  event, queue, func);
7218                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
7219                 mdd_detected = true;
7220         }
7221
7222         if (mdd_detected) {
7223                 reg = rd32(hw, I40E_PF_MDET_TX);
7224                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
7225                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
7226                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
7227                         pf_mdd_detected = true;
7228                 }
7229                 reg = rd32(hw, I40E_PF_MDET_RX);
7230                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
7231                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
7232                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
7233                         pf_mdd_detected = true;
7234                 }
7235                 /* Queue belongs to the PF, initiate a reset */
7236                 if (pf_mdd_detected) {
7237                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
7238                         i40e_service_event_schedule(pf);
7239                 }
7240         }
7241
7242         /* see if one of the VFs needs its hand slapped */
7243         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
7244                 vf = &(pf->vf[i]);
7245                 reg = rd32(hw, I40E_VP_MDET_TX(i));
7246                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
7247                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
7248                         vf->num_mdd_events++;
7249                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
7250                                  i);
7251                 }
7252
7253                 reg = rd32(hw, I40E_VP_MDET_RX(i));
7254                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
7255                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
7256                         vf->num_mdd_events++;
7257                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
7258                                  i);
7259                 }
7260
7261                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
7262                         dev_info(&pf->pdev->dev,
7263                                  "Too many MDD events on VF %d, disabled\n", i);
7264                         dev_info(&pf->pdev->dev,
7265                                  "Use PF Control I/F to re-enable the VF\n");
7266                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
7267                 }
7268         }
7269
7270         /* re-enable mdd interrupt cause */
7271         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
7272         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
7273         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
7274         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
7275         i40e_flush(hw);
7276 }
7277
7278 /**
7279  * i40e_sync_udp_filters_subtask - Sync the VSI filter list with HW
7280  * @pf: board private structure
7281  **/
7282 static void i40e_sync_udp_filters_subtask(struct i40e_pf *pf)
7283 {
7284         struct i40e_hw *hw = &pf->hw;
7285         i40e_status ret;
7286         u16 port;
7287         int i;
7288
7289         if (!(pf->flags & I40E_FLAG_UDP_FILTER_SYNC))
7290                 return;
7291
7292         pf->flags &= ~I40E_FLAG_UDP_FILTER_SYNC;
7293
7294         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
7295                 if (pf->pending_udp_bitmap & BIT_ULL(i)) {
7296                         pf->pending_udp_bitmap &= ~BIT_ULL(i);
7297                         port = pf->udp_ports[i].index;
7298                         if (port)
7299                                 ret = i40e_aq_add_udp_tunnel(hw, port,
7300                                                         pf->udp_ports[i].type,
7301                                                         NULL, NULL);
7302                         else
7303                                 ret = i40e_aq_del_udp_tunnel(hw, i, NULL);
7304
7305                         if (ret) {
7306                                 dev_dbg(&pf->pdev->dev,
7307                                         "%s %s port %d, index %d failed, err %s aq_err %s\n",
7308                                         pf->udp_ports[i].type ? "vxlan" : "geneve",
7309                                         port ? "add" : "delete",
7310                                         port, i,
7311                                         i40e_stat_str(&pf->hw, ret),
7312                                         i40e_aq_str(&pf->hw,
7313                                                     pf->hw.aq.asq_last_status));
7314                                 pf->udp_ports[i].index = 0;
7315                         }
7316                 }
7317         }
7318 }
7319
7320 /**
7321  * i40e_service_task - Run the driver's async subtasks
7322  * @work: pointer to work_struct containing our data
7323  **/
7324 static void i40e_service_task(struct work_struct *work)
7325 {
7326         struct i40e_pf *pf = container_of(work,
7327                                           struct i40e_pf,
7328                                           service_task);
7329         unsigned long start_time = jiffies;
7330
7331         /* don't bother with service tasks if a reset is in progress */
7332         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7333                 return;
7334         }
7335
7336         if (test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
7337                 return;
7338
7339         i40e_detect_recover_hung(pf);
7340         i40e_sync_filters_subtask(pf);
7341         i40e_reset_subtask(pf);
7342         i40e_handle_mdd_event(pf);
7343         i40e_vc_process_vflr_event(pf);
7344         i40e_watchdog_subtask(pf);
7345         i40e_fdir_reinit_subtask(pf);
7346         if (pf->flags & I40E_FLAG_CLIENT_RESET) {
7347                 /* Client subtask will reopen next time through. */
7348                 i40e_notify_client_of_netdev_close(pf->vsi[pf->lan_vsi], true);
7349                 pf->flags &= ~I40E_FLAG_CLIENT_RESET;
7350         } else {
7351                 i40e_client_subtask(pf);
7352                 if (pf->flags & I40E_FLAG_CLIENT_L2_CHANGE) {
7353                         i40e_notify_client_of_l2_param_changes(
7354                                                         pf->vsi[pf->lan_vsi]);
7355                         pf->flags &= ~I40E_FLAG_CLIENT_L2_CHANGE;
7356                 }
7357         }
7358         i40e_sync_filters_subtask(pf);
7359         i40e_sync_udp_filters_subtask(pf);
7360         i40e_clean_adminq_subtask(pf);
7361
7362         /* flush memory to make sure state is correct before next watchdog */
7363         smp_mb__before_atomic();
7364         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
7365
7366         /* If the tasks have taken longer than one timer cycle or there
7367          * is more work to be done, reschedule the service task now
7368          * rather than wait for the timer to tick again.
7369          */
7370         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
7371             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
7372             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
7373             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
7374                 i40e_service_event_schedule(pf);
7375 }
7376
7377 /**
7378  * i40e_service_timer - timer callback
7379  * @data: pointer to PF struct
7380  **/
7381 static void i40e_service_timer(unsigned long data)
7382 {
7383         struct i40e_pf *pf = (struct i40e_pf *)data;
7384
7385         mod_timer(&pf->service_timer,
7386                   round_jiffies(jiffies + pf->service_timer_period));
7387         i40e_service_event_schedule(pf);
7388 }
7389
7390 /**
7391  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
7392  * @vsi: the VSI being configured
7393  **/
7394 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
7395 {
7396         struct i40e_pf *pf = vsi->back;
7397
7398         switch (vsi->type) {
7399         case I40E_VSI_MAIN:
7400                 vsi->alloc_queue_pairs = pf->num_lan_qps;
7401                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7402                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7403                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7404                         vsi->num_q_vectors = pf->num_lan_msix;
7405                 else
7406                         vsi->num_q_vectors = 1;
7407
7408                 break;
7409
7410         case I40E_VSI_FDIR:
7411                 vsi->alloc_queue_pairs = 1;
7412                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
7413                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7414                 vsi->num_q_vectors = pf->num_fdsb_msix;
7415                 break;
7416
7417         case I40E_VSI_VMDQ2:
7418                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
7419                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7420                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7421                 vsi->num_q_vectors = pf->num_vmdq_msix;
7422                 break;
7423
7424         case I40E_VSI_SRIOV:
7425                 vsi->alloc_queue_pairs = pf->num_vf_qps;
7426                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7427                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7428                 break;
7429
7430         default:
7431                 WARN_ON(1);
7432                 return -ENODATA;
7433         }
7434
7435         return 0;
7436 }
7437
7438 /**
7439  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
7440  * @type: VSI pointer
7441  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
7442  *
7443  * On error: returns error code (negative)
7444  * On success: returns 0
7445  **/
7446 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
7447 {
7448         int size;
7449         int ret = 0;
7450
7451         /* allocate memory for both Tx and Rx ring pointers */
7452         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
7453         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
7454         if (!vsi->tx_rings)
7455                 return -ENOMEM;
7456         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
7457
7458         if (alloc_qvectors) {
7459                 /* allocate memory for q_vector pointers */
7460                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
7461                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
7462                 if (!vsi->q_vectors) {
7463                         ret = -ENOMEM;
7464                         goto err_vectors;
7465                 }
7466         }
7467         return ret;
7468
7469 err_vectors:
7470         kfree(vsi->tx_rings);
7471         return ret;
7472 }
7473
7474 /**
7475  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
7476  * @pf: board private structure
7477  * @type: type of VSI
7478  *
7479  * On error: returns error code (negative)
7480  * On success: returns vsi index in PF (positive)
7481  **/
7482 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
7483 {
7484         int ret = -ENODEV;
7485         struct i40e_vsi *vsi;
7486         int vsi_idx;
7487         int i;
7488
7489         /* Need to protect the allocation of the VSIs at the PF level */
7490         mutex_lock(&pf->switch_mutex);
7491
7492         /* VSI list may be fragmented if VSI creation/destruction has
7493          * been happening.  We can afford to do a quick scan to look
7494          * for any free VSIs in the list.
7495          *
7496          * find next empty vsi slot, looping back around if necessary
7497          */
7498         i = pf->next_vsi;
7499         while (i < pf->num_alloc_vsi && pf->vsi[i])
7500                 i++;
7501         if (i >= pf->num_alloc_vsi) {
7502                 i = 0;
7503                 while (i < pf->next_vsi && pf->vsi[i])
7504                         i++;
7505         }
7506
7507         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
7508                 vsi_idx = i;             /* Found one! */
7509         } else {
7510                 ret = -ENODEV;
7511                 goto unlock_pf;  /* out of VSI slots! */
7512         }
7513         pf->next_vsi = ++i;
7514
7515         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
7516         if (!vsi) {
7517                 ret = -ENOMEM;
7518                 goto unlock_pf;
7519         }
7520         vsi->type = type;
7521         vsi->back = pf;
7522         set_bit(__I40E_DOWN, &vsi->state);
7523         vsi->flags = 0;
7524         vsi->idx = vsi_idx;
7525         vsi->int_rate_limit = 0;
7526         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
7527                                 pf->rss_table_size : 64;
7528         vsi->netdev_registered = false;
7529         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
7530         hash_init(vsi->mac_filter_hash);
7531         vsi->irqs_ready = false;
7532
7533         ret = i40e_set_num_rings_in_vsi(vsi);
7534         if (ret)
7535                 goto err_rings;
7536
7537         ret = i40e_vsi_alloc_arrays(vsi, true);
7538         if (ret)
7539                 goto err_rings;
7540
7541         /* Setup default MSIX irq handler for VSI */
7542         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
7543
7544         /* Initialize VSI lock */
7545         spin_lock_init(&vsi->mac_filter_hash_lock);
7546         pf->vsi[vsi_idx] = vsi;
7547         ret = vsi_idx;
7548         goto unlock_pf;
7549
7550 err_rings:
7551         pf->next_vsi = i - 1;
7552         kfree(vsi);
7553 unlock_pf:
7554         mutex_unlock(&pf->switch_mutex);
7555         return ret;
7556 }
7557
7558 /**
7559  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
7560  * @type: VSI pointer
7561  * @free_qvectors: a bool to specify if q_vectors need to be freed.
7562  *
7563  * On error: returns error code (negative)
7564  * On success: returns 0
7565  **/
7566 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
7567 {
7568         /* free the ring and vector containers */
7569         if (free_qvectors) {
7570                 kfree(vsi->q_vectors);
7571                 vsi->q_vectors = NULL;
7572         }
7573         kfree(vsi->tx_rings);
7574         vsi->tx_rings = NULL;
7575         vsi->rx_rings = NULL;
7576 }
7577
7578 /**
7579  * i40e_clear_rss_config_user - clear the user configured RSS hash keys
7580  * and lookup table
7581  * @vsi: Pointer to VSI structure
7582  */
7583 static void i40e_clear_rss_config_user(struct i40e_vsi *vsi)
7584 {
7585         if (!vsi)
7586                 return;
7587
7588         kfree(vsi->rss_hkey_user);
7589         vsi->rss_hkey_user = NULL;
7590
7591         kfree(vsi->rss_lut_user);
7592         vsi->rss_lut_user = NULL;
7593 }
7594
7595 /**
7596  * i40e_vsi_clear - Deallocate the VSI provided
7597  * @vsi: the VSI being un-configured
7598  **/
7599 static int i40e_vsi_clear(struct i40e_vsi *vsi)
7600 {
7601         struct i40e_pf *pf;
7602
7603         if (!vsi)
7604                 return 0;
7605
7606         if (!vsi->back)
7607                 goto free_vsi;
7608         pf = vsi->back;
7609
7610         mutex_lock(&pf->switch_mutex);
7611         if (!pf->vsi[vsi->idx]) {
7612                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
7613                         vsi->idx, vsi->idx, vsi, vsi->type);
7614                 goto unlock_vsi;
7615         }
7616
7617         if (pf->vsi[vsi->idx] != vsi) {
7618                 dev_err(&pf->pdev->dev,
7619                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
7620                         pf->vsi[vsi->idx]->idx,
7621                         pf->vsi[vsi->idx],
7622                         pf->vsi[vsi->idx]->type,
7623                         vsi->idx, vsi, vsi->type);
7624                 goto unlock_vsi;
7625         }
7626
7627         /* updates the PF for this cleared vsi */
7628         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7629         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
7630
7631         i40e_vsi_free_arrays(vsi, true);
7632         i40e_clear_rss_config_user(vsi);
7633
7634         pf->vsi[vsi->idx] = NULL;
7635         if (vsi->idx < pf->next_vsi)
7636                 pf->next_vsi = vsi->idx;
7637
7638 unlock_vsi:
7639         mutex_unlock(&pf->switch_mutex);
7640 free_vsi:
7641         kfree(vsi);
7642
7643         return 0;
7644 }
7645
7646 /**
7647  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
7648  * @vsi: the VSI being cleaned
7649  **/
7650 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
7651 {
7652         int i;
7653
7654         if (vsi->tx_rings && vsi->tx_rings[0]) {
7655                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7656                         kfree_rcu(vsi->tx_rings[i], rcu);
7657                         vsi->tx_rings[i] = NULL;
7658                         vsi->rx_rings[i] = NULL;
7659                 }
7660         }
7661 }
7662
7663 /**
7664  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
7665  * @vsi: the VSI being configured
7666  **/
7667 static int i40e_alloc_rings(struct i40e_vsi *vsi)
7668 {
7669         struct i40e_ring *tx_ring, *rx_ring;
7670         struct i40e_pf *pf = vsi->back;
7671         int i;
7672
7673         /* Set basic values in the rings to be used later during open() */
7674         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7675                 /* allocate space for both Tx and Rx in one shot */
7676                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
7677                 if (!tx_ring)
7678                         goto err_out;
7679
7680                 tx_ring->queue_index = i;
7681                 tx_ring->reg_idx = vsi->base_queue + i;
7682                 tx_ring->ring_active = false;
7683                 tx_ring->vsi = vsi;
7684                 tx_ring->netdev = vsi->netdev;
7685                 tx_ring->dev = &pf->pdev->dev;
7686                 tx_ring->count = vsi->num_desc;
7687                 tx_ring->size = 0;
7688                 tx_ring->dcb_tc = 0;
7689                 if (vsi->back->flags & I40E_FLAG_WB_ON_ITR_CAPABLE)
7690                         tx_ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
7691                 tx_ring->tx_itr_setting = pf->tx_itr_default;
7692                 vsi->tx_rings[i] = tx_ring;
7693
7694                 rx_ring = &tx_ring[1];
7695                 rx_ring->queue_index = i;
7696                 rx_ring->reg_idx = vsi->base_queue + i;
7697                 rx_ring->ring_active = false;
7698                 rx_ring->vsi = vsi;
7699                 rx_ring->netdev = vsi->netdev;
7700                 rx_ring->dev = &pf->pdev->dev;
7701                 rx_ring->count = vsi->num_desc;
7702                 rx_ring->size = 0;
7703                 rx_ring->dcb_tc = 0;
7704                 rx_ring->rx_itr_setting = pf->rx_itr_default;
7705                 vsi->rx_rings[i] = rx_ring;
7706         }
7707
7708         return 0;
7709
7710 err_out:
7711         i40e_vsi_clear_rings(vsi);
7712         return -ENOMEM;
7713 }
7714
7715 /**
7716  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
7717  * @pf: board private structure
7718  * @vectors: the number of MSI-X vectors to request
7719  *
7720  * Returns the number of vectors reserved, or error
7721  **/
7722 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
7723 {
7724         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
7725                                         I40E_MIN_MSIX, vectors);
7726         if (vectors < 0) {
7727                 dev_info(&pf->pdev->dev,
7728                          "MSI-X vector reservation failed: %d\n", vectors);
7729                 vectors = 0;
7730         }
7731
7732         return vectors;
7733 }
7734
7735 /**
7736  * i40e_init_msix - Setup the MSIX capability
7737  * @pf: board private structure
7738  *
7739  * Work with the OS to set up the MSIX vectors needed.
7740  *
7741  * Returns the number of vectors reserved or negative on failure
7742  **/
7743 static int i40e_init_msix(struct i40e_pf *pf)
7744 {
7745         struct i40e_hw *hw = &pf->hw;
7746         int cpus, extra_vectors;
7747         int vectors_left;
7748         int v_budget, i;
7749         int v_actual;
7750         int iwarp_requested = 0;
7751
7752         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
7753                 return -ENODEV;
7754
7755         /* The number of vectors we'll request will be comprised of:
7756          *   - Add 1 for "other" cause for Admin Queue events, etc.
7757          *   - The number of LAN queue pairs
7758          *      - Queues being used for RSS.
7759          *              We don't need as many as max_rss_size vectors.
7760          *              use rss_size instead in the calculation since that
7761          *              is governed by number of cpus in the system.
7762          *      - assumes symmetric Tx/Rx pairing
7763          *   - The number of VMDq pairs
7764          *   - The CPU count within the NUMA node if iWARP is enabled
7765          * Once we count this up, try the request.
7766          *
7767          * If we can't get what we want, we'll simplify to nearly nothing
7768          * and try again.  If that still fails, we punt.
7769          */
7770         vectors_left = hw->func_caps.num_msix_vectors;
7771         v_budget = 0;
7772
7773         /* reserve one vector for miscellaneous handler */
7774         if (vectors_left) {
7775                 v_budget++;
7776                 vectors_left--;
7777         }
7778
7779         /* reserve some vectors for the main PF traffic queues. Initially we
7780          * only reserve at most 50% of the available vectors, in the case that
7781          * the number of online CPUs is large. This ensures that we can enable
7782          * extra features as well. Once we've enabled the other features, we
7783          * will use any remaining vectors to reach as close as we can to the
7784          * number of online CPUs.
7785          */
7786         cpus = num_online_cpus();
7787         pf->num_lan_msix = min_t(int, cpus, vectors_left / 2);
7788         vectors_left -= pf->num_lan_msix;
7789
7790         /* reserve one vector for sideband flow director */
7791         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7792                 if (vectors_left) {
7793                         pf->num_fdsb_msix = 1;
7794                         v_budget++;
7795                         vectors_left--;
7796                 } else {
7797                         pf->num_fdsb_msix = 0;
7798                 }
7799         }
7800
7801         /* can we reserve enough for iWARP? */
7802         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
7803                 iwarp_requested = pf->num_iwarp_msix;
7804
7805                 if (!vectors_left)
7806                         pf->num_iwarp_msix = 0;
7807                 else if (vectors_left < pf->num_iwarp_msix)
7808                         pf->num_iwarp_msix = 1;
7809                 v_budget += pf->num_iwarp_msix;
7810                 vectors_left -= pf->num_iwarp_msix;
7811         }
7812
7813         /* any vectors left over go for VMDq support */
7814         if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
7815                 int vmdq_vecs_wanted = pf->num_vmdq_vsis * pf->num_vmdq_qps;
7816                 int vmdq_vecs = min_t(int, vectors_left, vmdq_vecs_wanted);
7817
7818                 if (!vectors_left) {
7819                         pf->num_vmdq_msix = 0;
7820                         pf->num_vmdq_qps = 0;
7821                 } else {
7822                         /* if we're short on vectors for what's desired, we limit
7823                          * the queues per vmdq.  If this is still more than are
7824                          * available, the user will need to change the number of
7825                          * queues/vectors used by the PF later with the ethtool
7826                          * channels command
7827                          */
7828                         if (vmdq_vecs < vmdq_vecs_wanted)
7829                                 pf->num_vmdq_qps = 1;
7830                         pf->num_vmdq_msix = pf->num_vmdq_qps;
7831
7832                         v_budget += vmdq_vecs;
7833                         vectors_left -= vmdq_vecs;
7834                 }
7835         }
7836
7837         /* On systems with a large number of SMP cores, we previously limited
7838          * the number of vectors for num_lan_msix to be at most 50% of the
7839          * available vectors, to allow for other features. Now, we add back
7840          * the remaining vectors. However, we ensure that the total
7841          * num_lan_msix will not exceed num_online_cpus(). To do this, we
7842          * calculate the number of vectors we can add without going over the
7843          * cap of CPUs. For systems with a small number of CPUs this will be
7844          * zero.
7845          */
7846         extra_vectors = min_t(int, cpus - pf->num_lan_msix, vectors_left);
7847         pf->num_lan_msix += extra_vectors;
7848         vectors_left -= extra_vectors;
7849
7850         WARN(vectors_left < 0,
7851              "Calculation of remaining vectors underflowed. This is an accounting bug when determining total MSI-X vectors.\n");
7852
7853         v_budget += pf->num_lan_msix;
7854         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
7855                                    GFP_KERNEL);
7856         if (!pf->msix_entries)
7857                 return -ENOMEM;
7858
7859         for (i = 0; i < v_budget; i++)
7860                 pf->msix_entries[i].entry = i;
7861         v_actual = i40e_reserve_msix_vectors(pf, v_budget);
7862
7863         if (v_actual < I40E_MIN_MSIX) {
7864                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
7865                 kfree(pf->msix_entries);
7866                 pf->msix_entries = NULL;
7867                 pci_disable_msix(pf->pdev);
7868                 return -ENODEV;
7869
7870         } else if (v_actual == I40E_MIN_MSIX) {
7871                 /* Adjust for minimal MSIX use */
7872                 pf->num_vmdq_vsis = 0;
7873                 pf->num_vmdq_qps = 0;
7874                 pf->num_lan_qps = 1;
7875                 pf->num_lan_msix = 1;
7876
7877         } else if (!vectors_left) {
7878                 /* If we have limited resources, we will start with no vectors
7879                  * for the special features and then allocate vectors to some
7880                  * of these features based on the policy and at the end disable
7881                  * the features that did not get any vectors.
7882                  */
7883                 int vec;
7884
7885                 dev_info(&pf->pdev->dev,
7886                          "MSI-X vector limit reached, attempting to redistribute vectors\n");
7887                 /* reserve the misc vector */
7888                 vec = v_actual - 1;
7889
7890                 /* Scale vector usage down */
7891                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
7892                 pf->num_vmdq_vsis = 1;
7893                 pf->num_vmdq_qps = 1;
7894
7895                 /* partition out the remaining vectors */
7896                 switch (vec) {
7897                 case 2:
7898                         pf->num_lan_msix = 1;
7899                         break;
7900                 case 3:
7901                         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
7902                                 pf->num_lan_msix = 1;
7903                                 pf->num_iwarp_msix = 1;
7904                         } else {
7905                                 pf->num_lan_msix = 2;
7906                         }
7907                         break;
7908                 default:
7909                         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
7910                                 pf->num_iwarp_msix = min_t(int, (vec / 3),
7911                                                  iwarp_requested);
7912                                 pf->num_vmdq_vsis = min_t(int, (vec / 3),
7913                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
7914                         } else {
7915                                 pf->num_vmdq_vsis = min_t(int, (vec / 2),
7916                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
7917                         }
7918                         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7919                                 pf->num_fdsb_msix = 1;
7920                                 vec--;
7921                         }
7922                         pf->num_lan_msix = min_t(int,
7923                                (vec - (pf->num_iwarp_msix + pf->num_vmdq_vsis)),
7924                                                               pf->num_lan_msix);
7925                         pf->num_lan_qps = pf->num_lan_msix;
7926                         break;
7927                 }
7928         }
7929
7930         if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
7931             (pf->num_fdsb_msix == 0)) {
7932                 dev_info(&pf->pdev->dev, "Sideband Flowdir disabled, not enough MSI-X vectors\n");
7933                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7934         }
7935         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7936             (pf->num_vmdq_msix == 0)) {
7937                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
7938                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
7939         }
7940
7941         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
7942             (pf->num_iwarp_msix == 0)) {
7943                 dev_info(&pf->pdev->dev, "IWARP disabled, not enough MSI-X vectors\n");
7944                 pf->flags &= ~I40E_FLAG_IWARP_ENABLED;
7945         }
7946         i40e_debug(&pf->hw, I40E_DEBUG_INIT,
7947                    "MSI-X vector distribution: PF %d, VMDq %d, FDSB %d, iWARP %d\n",
7948                    pf->num_lan_msix,
7949                    pf->num_vmdq_msix * pf->num_vmdq_vsis,
7950                    pf->num_fdsb_msix,
7951                    pf->num_iwarp_msix);
7952
7953         return v_actual;
7954 }
7955
7956 /**
7957  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7958  * @vsi: the VSI being configured
7959  * @v_idx: index of the vector in the vsi struct
7960  * @cpu: cpu to be used on affinity_mask
7961  *
7962  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
7963  **/
7964 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx, int cpu)
7965 {
7966         struct i40e_q_vector *q_vector;
7967
7968         /* allocate q_vector */
7969         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
7970         if (!q_vector)
7971                 return -ENOMEM;
7972
7973         q_vector->vsi = vsi;
7974         q_vector->v_idx = v_idx;
7975         cpumask_set_cpu(cpu, &q_vector->affinity_mask);
7976
7977         if (vsi->netdev)
7978                 netif_napi_add(vsi->netdev, &q_vector->napi,
7979                                i40e_napi_poll, NAPI_POLL_WEIGHT);
7980
7981         q_vector->rx.latency_range = I40E_LOW_LATENCY;
7982         q_vector->tx.latency_range = I40E_LOW_LATENCY;
7983
7984         /* tie q_vector and vsi together */
7985         vsi->q_vectors[v_idx] = q_vector;
7986
7987         return 0;
7988 }
7989
7990 /**
7991  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
7992  * @vsi: the VSI being configured
7993  *
7994  * We allocate one q_vector per queue interrupt.  If allocation fails we
7995  * return -ENOMEM.
7996  **/
7997 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
7998 {
7999         struct i40e_pf *pf = vsi->back;
8000         int err, v_idx, num_q_vectors, current_cpu;
8001
8002         /* if not MSIX, give the one vector only to the LAN VSI */
8003         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
8004                 num_q_vectors = vsi->num_q_vectors;
8005         else if (vsi == pf->vsi[pf->lan_vsi])
8006                 num_q_vectors = 1;
8007         else
8008                 return -EINVAL;
8009
8010         current_cpu = cpumask_first(cpu_online_mask);
8011
8012         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
8013                 err = i40e_vsi_alloc_q_vector(vsi, v_idx, current_cpu);
8014                 if (err)
8015                         goto err_out;
8016                 current_cpu = cpumask_next(current_cpu, cpu_online_mask);
8017                 if (unlikely(current_cpu >= nr_cpu_ids))
8018                         current_cpu = cpumask_first(cpu_online_mask);
8019         }
8020
8021         return 0;
8022
8023 err_out:
8024         while (v_idx--)
8025                 i40e_free_q_vector(vsi, v_idx);
8026
8027         return err;
8028 }
8029
8030 /**
8031  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
8032  * @pf: board private structure to initialize
8033  **/
8034 static int i40e_init_interrupt_scheme(struct i40e_pf *pf)
8035 {
8036         int vectors = 0;
8037         ssize_t size;
8038
8039         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
8040                 vectors = i40e_init_msix(pf);
8041                 if (vectors < 0) {
8042                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
8043                                        I40E_FLAG_IWARP_ENABLED  |
8044                                        I40E_FLAG_RSS_ENABLED    |
8045                                        I40E_FLAG_DCB_CAPABLE    |
8046                                        I40E_FLAG_DCB_ENABLED    |
8047                                        I40E_FLAG_SRIOV_ENABLED  |
8048                                        I40E_FLAG_FD_SB_ENABLED  |
8049                                        I40E_FLAG_FD_ATR_ENABLED |
8050                                        I40E_FLAG_VMDQ_ENABLED);
8051
8052                         /* rework the queue expectations without MSIX */
8053                         i40e_determine_queue_usage(pf);
8054                 }
8055         }
8056
8057         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
8058             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
8059                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
8060                 vectors = pci_enable_msi(pf->pdev);
8061                 if (vectors < 0) {
8062                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
8063                                  vectors);
8064                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
8065                 }
8066                 vectors = 1;  /* one MSI or Legacy vector */
8067         }
8068
8069         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
8070                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
8071
8072         /* set up vector assignment tracking */
8073         size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
8074         pf->irq_pile = kzalloc(size, GFP_KERNEL);
8075         if (!pf->irq_pile) {
8076                 dev_err(&pf->pdev->dev, "error allocating irq_pile memory\n");
8077                 return -ENOMEM;
8078         }
8079         pf->irq_pile->num_entries = vectors;
8080         pf->irq_pile->search_hint = 0;
8081
8082         /* track first vector for misc interrupts, ignore return */
8083         (void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
8084
8085         return 0;
8086 }
8087
8088 /**
8089  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
8090  * @pf: board private structure
8091  *
8092  * This sets up the handler for MSIX 0, which is used to manage the
8093  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
8094  * when in MSI or Legacy interrupt mode.
8095  **/
8096 static int i40e_setup_misc_vector(struct i40e_pf *pf)
8097 {
8098         struct i40e_hw *hw = &pf->hw;
8099         int err = 0;
8100
8101         /* Only request the irq if this is the first time through, and
8102          * not when we're rebuilding after a Reset
8103          */
8104         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
8105                 err = request_irq(pf->msix_entries[0].vector,
8106                                   i40e_intr, 0, pf->int_name, pf);
8107                 if (err) {
8108                         dev_info(&pf->pdev->dev,
8109                                  "request_irq for %s failed: %d\n",
8110                                  pf->int_name, err);
8111                         return -EFAULT;
8112                 }
8113         }
8114
8115         i40e_enable_misc_int_causes(pf);
8116
8117         /* associate no queues to the misc vector */
8118         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
8119         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
8120
8121         i40e_flush(hw);
8122
8123         i40e_irq_dynamic_enable_icr0(pf, true);
8124
8125         return err;
8126 }
8127
8128 /**
8129  * i40e_config_rss_aq - Prepare for RSS using AQ commands
8130  * @vsi: vsi structure
8131  * @seed: RSS hash seed
8132  **/
8133 static int i40e_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
8134                               u8 *lut, u16 lut_size)
8135 {
8136         struct i40e_pf *pf = vsi->back;
8137         struct i40e_hw *hw = &pf->hw;
8138         int ret = 0;
8139
8140         if (seed) {
8141                 struct i40e_aqc_get_set_rss_key_data *seed_dw =
8142                         (struct i40e_aqc_get_set_rss_key_data *)seed;
8143                 ret = i40e_aq_set_rss_key(hw, vsi->id, seed_dw);
8144                 if (ret) {
8145                         dev_info(&pf->pdev->dev,
8146                                  "Cannot set RSS key, err %s aq_err %s\n",
8147                                  i40e_stat_str(hw, ret),
8148                                  i40e_aq_str(hw, hw->aq.asq_last_status));
8149                         return ret;
8150                 }
8151         }
8152         if (lut) {
8153                 bool pf_lut = vsi->type == I40E_VSI_MAIN ? true : false;
8154
8155                 ret = i40e_aq_set_rss_lut(hw, vsi->id, pf_lut, lut, lut_size);
8156                 if (ret) {
8157                         dev_info(&pf->pdev->dev,
8158                                  "Cannot set RSS lut, err %s aq_err %s\n",
8159                                  i40e_stat_str(hw, ret),
8160                                  i40e_aq_str(hw, hw->aq.asq_last_status));
8161                         return ret;
8162                 }
8163         }
8164         return ret;
8165 }
8166
8167 /**
8168  * i40e_get_rss_aq - Get RSS keys and lut by using AQ commands
8169  * @vsi: Pointer to vsi structure
8170  * @seed: Buffter to store the hash keys
8171  * @lut: Buffer to store the lookup table entries
8172  * @lut_size: Size of buffer to store the lookup table entries
8173  *
8174  * Return 0 on success, negative on failure
8175  */
8176 static int i40e_get_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
8177                            u8 *lut, u16 lut_size)
8178 {
8179         struct i40e_pf *pf = vsi->back;
8180         struct i40e_hw *hw = &pf->hw;
8181         int ret = 0;
8182
8183         if (seed) {
8184                 ret = i40e_aq_get_rss_key(hw, vsi->id,
8185                         (struct i40e_aqc_get_set_rss_key_data *)seed);
8186                 if (ret) {
8187                         dev_info(&pf->pdev->dev,
8188                                  "Cannot get RSS key, err %s aq_err %s\n",
8189                                  i40e_stat_str(&pf->hw, ret),
8190                                  i40e_aq_str(&pf->hw,
8191                                              pf->hw.aq.asq_last_status));
8192                         return ret;
8193                 }
8194         }
8195
8196         if (lut) {
8197                 bool pf_lut = vsi->type == I40E_VSI_MAIN ? true : false;
8198
8199                 ret = i40e_aq_get_rss_lut(hw, vsi->id, pf_lut, lut, lut_size);
8200                 if (ret) {
8201                         dev_info(&pf->pdev->dev,
8202                                  "Cannot get RSS lut, err %s aq_err %s\n",
8203                                  i40e_stat_str(&pf->hw, ret),
8204                                  i40e_aq_str(&pf->hw,
8205                                              pf->hw.aq.asq_last_status));
8206                         return ret;
8207                 }
8208         }
8209
8210         return ret;
8211 }
8212
8213 /**
8214  * i40e_vsi_config_rss - Prepare for VSI(VMDq) RSS if used
8215  * @vsi: VSI structure
8216  **/
8217 static int i40e_vsi_config_rss(struct i40e_vsi *vsi)
8218 {
8219         u8 seed[I40E_HKEY_ARRAY_SIZE];
8220         struct i40e_pf *pf = vsi->back;
8221         u8 *lut;
8222         int ret;
8223
8224         if (!(pf->flags & I40E_FLAG_RSS_AQ_CAPABLE))
8225                 return 0;
8226
8227         if (!vsi->rss_size)
8228                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8229                                       vsi->num_queue_pairs);
8230         if (!vsi->rss_size)
8231                 return -EINVAL;
8232
8233         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
8234         if (!lut)
8235                 return -ENOMEM;
8236         /* Use the user configured hash keys and lookup table if there is one,
8237          * otherwise use default
8238          */
8239         if (vsi->rss_lut_user)
8240                 memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
8241         else
8242                 i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
8243         if (vsi->rss_hkey_user)
8244                 memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
8245         else
8246                 netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
8247         ret = i40e_config_rss_aq(vsi, seed, lut, vsi->rss_table_size);
8248         kfree(lut);
8249
8250         return ret;
8251 }
8252
8253 /**
8254  * i40e_config_rss_reg - Configure RSS keys and lut by writing registers
8255  * @vsi: Pointer to vsi structure
8256  * @seed: RSS hash seed
8257  * @lut: Lookup table
8258  * @lut_size: Lookup table size
8259  *
8260  * Returns 0 on success, negative on failure
8261  **/
8262 static int i40e_config_rss_reg(struct i40e_vsi *vsi, const u8 *seed,
8263                                const u8 *lut, u16 lut_size)
8264 {
8265         struct i40e_pf *pf = vsi->back;
8266         struct i40e_hw *hw = &pf->hw;
8267         u16 vf_id = vsi->vf_id;
8268         u8 i;
8269
8270         /* Fill out hash function seed */
8271         if (seed) {
8272                 u32 *seed_dw = (u32 *)seed;
8273
8274                 if (vsi->type == I40E_VSI_MAIN) {
8275                         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
8276                                 wr32(hw, I40E_PFQF_HKEY(i), seed_dw[i]);
8277                 } else if (vsi->type == I40E_VSI_SRIOV) {
8278                         for (i = 0; i <= I40E_VFQF_HKEY1_MAX_INDEX; i++)
8279                                 wr32(hw, I40E_VFQF_HKEY1(i, vf_id), seed_dw[i]);
8280                 } else {
8281                         dev_err(&pf->pdev->dev, "Cannot set RSS seed - invalid VSI type\n");
8282                 }
8283         }
8284
8285         if (lut) {
8286                 u32 *lut_dw = (u32 *)lut;
8287
8288                 if (vsi->type == I40E_VSI_MAIN) {
8289                         if (lut_size != I40E_HLUT_ARRAY_SIZE)
8290                                 return -EINVAL;
8291                         for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
8292                                 wr32(hw, I40E_PFQF_HLUT(i), lut_dw[i]);
8293                 } else if (vsi->type == I40E_VSI_SRIOV) {
8294                         if (lut_size != I40E_VF_HLUT_ARRAY_SIZE)
8295                                 return -EINVAL;
8296                         for (i = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++)
8297                                 wr32(hw, I40E_VFQF_HLUT1(i, vf_id), lut_dw[i]);
8298                 } else {
8299                         dev_err(&pf->pdev->dev, "Cannot set RSS LUT - invalid VSI type\n");
8300                 }
8301         }
8302         i40e_flush(hw);
8303
8304         return 0;
8305 }
8306
8307 /**
8308  * i40e_get_rss_reg - Get the RSS keys and lut by reading registers
8309  * @vsi: Pointer to VSI structure
8310  * @seed: Buffer to store the keys
8311  * @lut: Buffer to store the lookup table entries
8312  * @lut_size: Size of buffer to store the lookup table entries
8313  *
8314  * Returns 0 on success, negative on failure
8315  */
8316 static int i40e_get_rss_reg(struct i40e_vsi *vsi, u8 *seed,
8317                             u8 *lut, u16 lut_size)
8318 {
8319         struct i40e_pf *pf = vsi->back;
8320         struct i40e_hw *hw = &pf->hw;
8321         u16 i;
8322
8323         if (seed) {
8324                 u32 *seed_dw = (u32 *)seed;
8325
8326                 for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
8327                         seed_dw[i] = i40e_read_rx_ctl(hw, I40E_PFQF_HKEY(i));
8328         }
8329         if (lut) {
8330                 u32 *lut_dw = (u32 *)lut;
8331
8332                 if (lut_size != I40E_HLUT_ARRAY_SIZE)
8333                         return -EINVAL;
8334                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
8335                         lut_dw[i] = rd32(hw, I40E_PFQF_HLUT(i));
8336         }
8337
8338         return 0;
8339 }
8340
8341 /**
8342  * i40e_config_rss - Configure RSS keys and lut
8343  * @vsi: Pointer to VSI structure
8344  * @seed: RSS hash seed
8345  * @lut: Lookup table
8346  * @lut_size: Lookup table size
8347  *
8348  * Returns 0 on success, negative on failure
8349  */
8350 int i40e_config_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
8351 {
8352         struct i40e_pf *pf = vsi->back;
8353
8354         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
8355                 return i40e_config_rss_aq(vsi, seed, lut, lut_size);
8356         else
8357                 return i40e_config_rss_reg(vsi, seed, lut, lut_size);
8358 }
8359
8360 /**
8361  * i40e_get_rss - Get RSS keys and lut
8362  * @vsi: Pointer to VSI structure
8363  * @seed: Buffer to store the keys
8364  * @lut: Buffer to store the lookup table entries
8365  * lut_size: Size of buffer to store the lookup table entries
8366  *
8367  * Returns 0 on success, negative on failure
8368  */
8369 int i40e_get_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
8370 {
8371         struct i40e_pf *pf = vsi->back;
8372
8373         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
8374                 return i40e_get_rss_aq(vsi, seed, lut, lut_size);
8375         else
8376                 return i40e_get_rss_reg(vsi, seed, lut, lut_size);
8377 }
8378
8379 /**
8380  * i40e_fill_rss_lut - Fill the RSS lookup table with default values
8381  * @pf: Pointer to board private structure
8382  * @lut: Lookup table
8383  * @rss_table_size: Lookup table size
8384  * @rss_size: Range of queue number for hashing
8385  */
8386 void i40e_fill_rss_lut(struct i40e_pf *pf, u8 *lut,
8387                        u16 rss_table_size, u16 rss_size)
8388 {
8389         u16 i;
8390
8391         for (i = 0; i < rss_table_size; i++)
8392                 lut[i] = i % rss_size;
8393 }
8394
8395 /**
8396  * i40e_pf_config_rss - Prepare for RSS if used
8397  * @pf: board private structure
8398  **/
8399 static int i40e_pf_config_rss(struct i40e_pf *pf)
8400 {
8401         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
8402         u8 seed[I40E_HKEY_ARRAY_SIZE];
8403         u8 *lut;
8404         struct i40e_hw *hw = &pf->hw;
8405         u32 reg_val;
8406         u64 hena;
8407         int ret;
8408
8409         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
8410         hena = (u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(0)) |
8411                 ((u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(1)) << 32);
8412         hena |= i40e_pf_get_default_rss_hena(pf);
8413
8414         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), (u32)hena);
8415         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
8416
8417         /* Determine the RSS table size based on the hardware capabilities */
8418         reg_val = i40e_read_rx_ctl(hw, I40E_PFQF_CTL_0);
8419         reg_val = (pf->rss_table_size == 512) ?
8420                         (reg_val | I40E_PFQF_CTL_0_HASHLUTSIZE_512) :
8421                         (reg_val & ~I40E_PFQF_CTL_0_HASHLUTSIZE_512);
8422         i40e_write_rx_ctl(hw, I40E_PFQF_CTL_0, reg_val);
8423
8424         /* Determine the RSS size of the VSI */
8425         if (!vsi->rss_size) {
8426                 u16 qcount;
8427
8428                 qcount = vsi->num_queue_pairs / vsi->tc_config.numtc;
8429                 vsi->rss_size = min_t(int, pf->alloc_rss_size, qcount);
8430         }
8431         if (!vsi->rss_size)
8432                 return -EINVAL;
8433
8434         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
8435         if (!lut)
8436                 return -ENOMEM;
8437
8438         /* Use user configured lut if there is one, otherwise use default */
8439         if (vsi->rss_lut_user)
8440                 memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
8441         else
8442                 i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
8443
8444         /* Use user configured hash key if there is one, otherwise
8445          * use default.
8446          */
8447         if (vsi->rss_hkey_user)
8448                 memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
8449         else
8450                 netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
8451         ret = i40e_config_rss(vsi, seed, lut, vsi->rss_table_size);
8452         kfree(lut);
8453
8454         return ret;
8455 }
8456
8457 /**
8458  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
8459  * @pf: board private structure
8460  * @queue_count: the requested queue count for rss.
8461  *
8462  * returns 0 if rss is not enabled, if enabled returns the final rss queue
8463  * count which may be different from the requested queue count.
8464  * Note: expects to be called while under rtnl_lock()
8465  **/
8466 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
8467 {
8468         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
8469         int new_rss_size;
8470
8471         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
8472                 return 0;
8473
8474         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
8475
8476         if (queue_count != vsi->num_queue_pairs) {
8477                 u16 qcount;
8478
8479                 vsi->req_queue_pairs = queue_count;
8480                 i40e_prep_for_reset(pf, true);
8481
8482                 pf->alloc_rss_size = new_rss_size;
8483
8484                 i40e_reset_and_rebuild(pf, true, true);
8485
8486                 /* Discard the user configured hash keys and lut, if less
8487                  * queues are enabled.
8488                  */
8489                 if (queue_count < vsi->rss_size) {
8490                         i40e_clear_rss_config_user(vsi);
8491                         dev_dbg(&pf->pdev->dev,
8492                                 "discard user configured hash keys and lut\n");
8493                 }
8494
8495                 /* Reset vsi->rss_size, as number of enabled queues changed */
8496                 qcount = vsi->num_queue_pairs / vsi->tc_config.numtc;
8497                 vsi->rss_size = min_t(int, pf->alloc_rss_size, qcount);
8498
8499                 i40e_pf_config_rss(pf);
8500         }
8501         dev_info(&pf->pdev->dev, "User requested queue count/HW max RSS count:  %d/%d\n",
8502                  vsi->req_queue_pairs, pf->rss_size_max);
8503         return pf->alloc_rss_size;
8504 }
8505
8506 /**
8507  * i40e_get_npar_bw_setting - Retrieve BW settings for this PF partition
8508  * @pf: board private structure
8509  **/
8510 i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf)
8511 {
8512         i40e_status status;
8513         bool min_valid, max_valid;
8514         u32 max_bw, min_bw;
8515
8516         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
8517                                            &min_valid, &max_valid);
8518
8519         if (!status) {
8520                 if (min_valid)
8521                         pf->npar_min_bw = min_bw;
8522                 if (max_valid)
8523                         pf->npar_max_bw = max_bw;
8524         }
8525
8526         return status;
8527 }
8528
8529 /**
8530  * i40e_set_npar_bw_setting - Set BW settings for this PF partition
8531  * @pf: board private structure
8532  **/
8533 i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf)
8534 {
8535         struct i40e_aqc_configure_partition_bw_data bw_data;
8536         i40e_status status;
8537
8538         /* Set the valid bit for this PF */
8539         bw_data.pf_valid_bits = cpu_to_le16(BIT(pf->hw.pf_id));
8540         bw_data.max_bw[pf->hw.pf_id] = pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK;
8541         bw_data.min_bw[pf->hw.pf_id] = pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK;
8542
8543         /* Set the new bandwidths */
8544         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
8545
8546         return status;
8547 }
8548
8549 /**
8550  * i40e_commit_npar_bw_setting - Commit BW settings for this PF partition
8551  * @pf: board private structure
8552  **/
8553 i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf)
8554 {
8555         /* Commit temporary BW setting to permanent NVM image */
8556         enum i40e_admin_queue_err last_aq_status;
8557         i40e_status ret;
8558         u16 nvm_word;
8559
8560         if (pf->hw.partition_id != 1) {
8561                 dev_info(&pf->pdev->dev,
8562                          "Commit BW only works on partition 1! This is partition %d",
8563                          pf->hw.partition_id);
8564                 ret = I40E_NOT_SUPPORTED;
8565                 goto bw_commit_out;
8566         }
8567
8568         /* Acquire NVM for read access */
8569         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
8570         last_aq_status = pf->hw.aq.asq_last_status;
8571         if (ret) {
8572                 dev_info(&pf->pdev->dev,
8573                          "Cannot acquire NVM for read access, err %s aq_err %s\n",
8574                          i40e_stat_str(&pf->hw, ret),
8575                          i40e_aq_str(&pf->hw, last_aq_status));
8576                 goto bw_commit_out;
8577         }
8578
8579         /* Read word 0x10 of NVM - SW compatibility word 1 */
8580         ret = i40e_aq_read_nvm(&pf->hw,
8581                                I40E_SR_NVM_CONTROL_WORD,
8582                                0x10, sizeof(nvm_word), &nvm_word,
8583                                false, NULL);
8584         /* Save off last admin queue command status before releasing
8585          * the NVM
8586          */
8587         last_aq_status = pf->hw.aq.asq_last_status;
8588         i40e_release_nvm(&pf->hw);
8589         if (ret) {
8590                 dev_info(&pf->pdev->dev, "NVM read error, err %s aq_err %s\n",
8591                          i40e_stat_str(&pf->hw, ret),
8592                          i40e_aq_str(&pf->hw, last_aq_status));
8593                 goto bw_commit_out;
8594         }
8595
8596         /* Wait a bit for NVM release to complete */
8597         msleep(50);
8598
8599         /* Acquire NVM for write access */
8600         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
8601         last_aq_status = pf->hw.aq.asq_last_status;
8602         if (ret) {
8603                 dev_info(&pf->pdev->dev,
8604                          "Cannot acquire NVM for write access, err %s aq_err %s\n",
8605                          i40e_stat_str(&pf->hw, ret),
8606                          i40e_aq_str(&pf->hw, last_aq_status));
8607                 goto bw_commit_out;
8608         }
8609         /* Write it back out unchanged to initiate update NVM,
8610          * which will force a write of the shadow (alt) RAM to
8611          * the NVM - thus storing the bandwidth values permanently.
8612          */
8613         ret = i40e_aq_update_nvm(&pf->hw,
8614                                  I40E_SR_NVM_CONTROL_WORD,
8615                                  0x10, sizeof(nvm_word),
8616                                  &nvm_word, true, NULL);
8617         /* Save off last admin queue command status before releasing
8618          * the NVM
8619          */
8620         last_aq_status = pf->hw.aq.asq_last_status;
8621         i40e_release_nvm(&pf->hw);
8622         if (ret)
8623                 dev_info(&pf->pdev->dev,
8624                          "BW settings NOT SAVED, err %s aq_err %s\n",
8625                          i40e_stat_str(&pf->hw, ret),
8626                          i40e_aq_str(&pf->hw, last_aq_status));
8627 bw_commit_out:
8628
8629         return ret;
8630 }
8631
8632 /**
8633  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
8634  * @pf: board private structure to initialize
8635  *
8636  * i40e_sw_init initializes the Adapter private data structure.
8637  * Fields are initialized based on PCI device information and
8638  * OS network device settings (MTU size).
8639  **/
8640 static int i40e_sw_init(struct i40e_pf *pf)
8641 {
8642         int err = 0;
8643         int size;
8644
8645         /* Set default capability flags */
8646         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
8647                     I40E_FLAG_MSI_ENABLED     |
8648                     I40E_FLAG_MSIX_ENABLED;
8649
8650         /* Set default ITR */
8651         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
8652         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
8653
8654         /* Depending on PF configurations, it is possible that the RSS
8655          * maximum might end up larger than the available queues
8656          */
8657         pf->rss_size_max = BIT(pf->hw.func_caps.rss_table_entry_width);
8658         pf->alloc_rss_size = 1;
8659         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
8660         pf->rss_size_max = min_t(int, pf->rss_size_max,
8661                                  pf->hw.func_caps.num_tx_qp);
8662         if (pf->hw.func_caps.rss) {
8663                 pf->flags |= I40E_FLAG_RSS_ENABLED;
8664                 pf->alloc_rss_size = min_t(int, pf->rss_size_max,
8665                                            num_online_cpus());
8666         }
8667
8668         /* MFP mode enabled */
8669         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.flex10_enable) {
8670                 pf->flags |= I40E_FLAG_MFP_ENABLED;
8671                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
8672                 if (i40e_get_npar_bw_setting(pf))
8673                         dev_warn(&pf->pdev->dev,
8674                                  "Could not get NPAR bw settings\n");
8675                 else
8676                         dev_info(&pf->pdev->dev,
8677                                  "Min BW = %8.8x, Max BW = %8.8x\n",
8678                                  pf->npar_min_bw, pf->npar_max_bw);
8679         }
8680
8681         /* FW/NVM is not yet fixed in this regard */
8682         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
8683             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
8684                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8685                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
8686                 if (pf->flags & I40E_FLAG_MFP_ENABLED &&
8687                     pf->hw.num_partitions > 1)
8688                         dev_info(&pf->pdev->dev,
8689                                  "Flow Director Sideband mode Disabled in MFP mode\n");
8690                 else
8691                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8692                 pf->fdir_pf_filter_count =
8693                                  pf->hw.func_caps.fd_filters_guaranteed;
8694                 pf->hw.fdir_shared_filter_count =
8695                                  pf->hw.func_caps.fd_filters_best_effort;
8696         }
8697
8698         if ((pf->hw.mac.type == I40E_MAC_XL710) &&
8699             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
8700             (pf->hw.aq.fw_maj_ver < 4))) {
8701                 pf->flags |= I40E_FLAG_RESTART_AUTONEG;
8702                 /* No DCB support  for FW < v4.33 */
8703                 pf->flags |= I40E_FLAG_NO_DCB_SUPPORT;
8704         }
8705
8706         /* Disable FW LLDP if FW < v4.3 */
8707         if ((pf->hw.mac.type == I40E_MAC_XL710) &&
8708             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
8709             (pf->hw.aq.fw_maj_ver < 4)))
8710                 pf->flags |= I40E_FLAG_STOP_FW_LLDP;
8711
8712         /* Use the FW Set LLDP MIB API if FW > v4.40 */
8713         if ((pf->hw.mac.type == I40E_MAC_XL710) &&
8714             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver >= 40)) ||
8715             (pf->hw.aq.fw_maj_ver >= 5)))
8716                 pf->flags |= I40E_FLAG_USE_SET_LLDP_MIB;
8717
8718         if (pf->hw.func_caps.vmdq) {
8719                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
8720                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
8721                 pf->num_vmdq_qps = i40e_default_queues_per_vmdq(pf);
8722         }
8723
8724         if (pf->hw.func_caps.iwarp) {
8725                 pf->flags |= I40E_FLAG_IWARP_ENABLED;
8726                 /* IWARP needs one extra vector for CQP just like MISC.*/
8727                 pf->num_iwarp_msix = (int)num_online_cpus() + 1;
8728         }
8729
8730 #ifdef CONFIG_PCI_IOV
8731         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
8732                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
8733                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
8734                 pf->num_req_vfs = min_t(int,
8735                                         pf->hw.func_caps.num_vfs,
8736                                         I40E_MAX_VF_COUNT);
8737         }
8738 #endif /* CONFIG_PCI_IOV */
8739         if (pf->hw.mac.type == I40E_MAC_X722) {
8740                 pf->flags |= I40E_FLAG_RSS_AQ_CAPABLE
8741                              | I40E_FLAG_128_QP_RSS_CAPABLE
8742                              | I40E_FLAG_HW_ATR_EVICT_CAPABLE
8743                              | I40E_FLAG_OUTER_UDP_CSUM_CAPABLE
8744                              | I40E_FLAG_WB_ON_ITR_CAPABLE
8745                              | I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE
8746                              | I40E_FLAG_NO_PCI_LINK_CHECK
8747                              | I40E_FLAG_USE_SET_LLDP_MIB
8748                              | I40E_FLAG_GENEVE_OFFLOAD_CAPABLE
8749                              | I40E_FLAG_PTP_L4_CAPABLE
8750                              | I40E_FLAG_WOL_MC_MAGIC_PKT_WAKE;
8751         } else if ((pf->hw.aq.api_maj_ver > 1) ||
8752                    ((pf->hw.aq.api_maj_ver == 1) &&
8753                     (pf->hw.aq.api_min_ver > 4))) {
8754                 /* Supported in FW API version higher than 1.4 */
8755                 pf->flags |= I40E_FLAG_GENEVE_OFFLOAD_CAPABLE;
8756                 pf->hw_disabled_flags = I40E_FLAG_HW_ATR_EVICT_CAPABLE;
8757         } else {
8758                 pf->hw_disabled_flags = I40E_FLAG_HW_ATR_EVICT_CAPABLE;
8759         }
8760
8761         pf->eeprom_version = 0xDEAD;
8762         pf->lan_veb = I40E_NO_VEB;
8763         pf->lan_vsi = I40E_NO_VSI;
8764
8765         /* By default FW has this off for performance reasons */
8766         pf->flags &= ~I40E_FLAG_VEB_STATS_ENABLED;
8767
8768         /* set up queue assignment tracking */
8769         size = sizeof(struct i40e_lump_tracking)
8770                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
8771         pf->qp_pile = kzalloc(size, GFP_KERNEL);
8772         if (!pf->qp_pile) {
8773                 err = -ENOMEM;
8774                 goto sw_init_done;
8775         }
8776         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
8777         pf->qp_pile->search_hint = 0;
8778
8779         pf->tx_timeout_recovery_level = 1;
8780
8781         mutex_init(&pf->switch_mutex);
8782
8783         /* If NPAR is enabled nudge the Tx scheduler */
8784         if (pf->hw.func_caps.npar_enable && (!i40e_get_npar_bw_setting(pf)))
8785                 i40e_set_npar_bw_setting(pf);
8786
8787 sw_init_done:
8788         return err;
8789 }
8790
8791 /**
8792  * i40e_set_ntuple - set the ntuple feature flag and take action
8793  * @pf: board private structure to initialize
8794  * @features: the feature set that the stack is suggesting
8795  *
8796  * returns a bool to indicate if reset needs to happen
8797  **/
8798 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
8799 {
8800         bool need_reset = false;
8801
8802         /* Check if Flow Director n-tuple support was enabled or disabled.  If
8803          * the state changed, we need to reset.
8804          */
8805         if (features & NETIF_F_NTUPLE) {
8806                 /* Enable filters and mark for reset */
8807                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
8808                         need_reset = true;
8809                 /* enable FD_SB only if there is MSI-X vector */
8810                 if (pf->num_fdsb_msix > 0)
8811                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8812         } else {
8813                 /* turn off filters, mark for reset and clear SW filter list */
8814                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8815                         need_reset = true;
8816                         i40e_fdir_filter_exit(pf);
8817                 }
8818                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8819                 pf->hw_disabled_flags &= ~I40E_FLAG_FD_SB_ENABLED;
8820                 /* reset fd counters */
8821                 pf->fd_add_err = 0;
8822                 pf->fd_atr_cnt = 0;
8823                 /* if ATR was auto disabled it can be re-enabled. */
8824                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
8825                     (pf->hw_disabled_flags & I40E_FLAG_FD_ATR_ENABLED)) {
8826                         pf->hw_disabled_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
8827                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
8828                                 dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
8829                 }
8830         }
8831         return need_reset;
8832 }
8833
8834 /**
8835  * i40e_clear_rss_lut - clear the rx hash lookup table
8836  * @vsi: the VSI being configured
8837  **/
8838 static void i40e_clear_rss_lut(struct i40e_vsi *vsi)
8839 {
8840         struct i40e_pf *pf = vsi->back;
8841         struct i40e_hw *hw = &pf->hw;
8842         u16 vf_id = vsi->vf_id;
8843         u8 i;
8844
8845         if (vsi->type == I40E_VSI_MAIN) {
8846                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
8847                         wr32(hw, I40E_PFQF_HLUT(i), 0);
8848         } else if (vsi->type == I40E_VSI_SRIOV) {
8849                 for (i = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++)
8850                         i40e_write_rx_ctl(hw, I40E_VFQF_HLUT1(i, vf_id), 0);
8851         } else {
8852                 dev_err(&pf->pdev->dev, "Cannot set RSS LUT - invalid VSI type\n");
8853         }
8854 }
8855
8856 /**
8857  * i40e_set_features - set the netdev feature flags
8858  * @netdev: ptr to the netdev being adjusted
8859  * @features: the feature set that the stack is suggesting
8860  * Note: expects to be called while under rtnl_lock()
8861  **/
8862 static int i40e_set_features(struct net_device *netdev,
8863                              netdev_features_t features)
8864 {
8865         struct i40e_netdev_priv *np = netdev_priv(netdev);
8866         struct i40e_vsi *vsi = np->vsi;
8867         struct i40e_pf *pf = vsi->back;
8868         bool need_reset;
8869
8870         if (features & NETIF_F_RXHASH && !(netdev->features & NETIF_F_RXHASH))
8871                 i40e_pf_config_rss(pf);
8872         else if (!(features & NETIF_F_RXHASH) &&
8873                  netdev->features & NETIF_F_RXHASH)
8874                 i40e_clear_rss_lut(vsi);
8875
8876         if (features & NETIF_F_HW_VLAN_CTAG_RX)
8877                 i40e_vlan_stripping_enable(vsi);
8878         else
8879                 i40e_vlan_stripping_disable(vsi);
8880
8881         need_reset = i40e_set_ntuple(pf, features);
8882
8883         if (need_reset)
8884                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED), true);
8885
8886         return 0;
8887 }
8888
8889 /**
8890  * i40e_get_udp_port_idx - Lookup a possibly offloaded for Rx UDP port
8891  * @pf: board private structure
8892  * @port: The UDP port to look up
8893  *
8894  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
8895  **/
8896 static u8 i40e_get_udp_port_idx(struct i40e_pf *pf, u16 port)
8897 {
8898         u8 i;
8899
8900         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
8901                 if (pf->udp_ports[i].index == port)
8902                         return i;
8903         }
8904
8905         return i;
8906 }
8907
8908 /**
8909  * i40e_udp_tunnel_add - Get notifications about UDP tunnel ports that come up
8910  * @netdev: This physical port's netdev
8911  * @ti: Tunnel endpoint information
8912  **/
8913 static void i40e_udp_tunnel_add(struct net_device *netdev,
8914                                 struct udp_tunnel_info *ti)
8915 {
8916         struct i40e_netdev_priv *np = netdev_priv(netdev);
8917         struct i40e_vsi *vsi = np->vsi;
8918         struct i40e_pf *pf = vsi->back;
8919         u16 port = ntohs(ti->port);
8920         u8 next_idx;
8921         u8 idx;
8922
8923         idx = i40e_get_udp_port_idx(pf, port);
8924
8925         /* Check if port already exists */
8926         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8927                 netdev_info(netdev, "port %d already offloaded\n", port);
8928                 return;
8929         }
8930
8931         /* Now check if there is space to add the new port */
8932         next_idx = i40e_get_udp_port_idx(pf, 0);
8933
8934         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8935                 netdev_info(netdev, "maximum number of offloaded UDP ports reached, not adding port %d\n",
8936                             port);
8937                 return;
8938         }
8939
8940         switch (ti->type) {
8941         case UDP_TUNNEL_TYPE_VXLAN:
8942                 pf->udp_ports[next_idx].type = I40E_AQC_TUNNEL_TYPE_VXLAN;
8943                 break;
8944         case UDP_TUNNEL_TYPE_GENEVE:
8945                 if (!(pf->flags & I40E_FLAG_GENEVE_OFFLOAD_CAPABLE))
8946                         return;
8947                 pf->udp_ports[next_idx].type = I40E_AQC_TUNNEL_TYPE_NGE;
8948                 break;
8949         default:
8950                 return;
8951         }
8952
8953         /* New port: add it and mark its index in the bitmap */
8954         pf->udp_ports[next_idx].index = port;
8955         pf->pending_udp_bitmap |= BIT_ULL(next_idx);
8956         pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
8957 }
8958
8959 /**
8960  * i40e_udp_tunnel_del - Get notifications about UDP tunnel ports that go away
8961  * @netdev: This physical port's netdev
8962  * @ti: Tunnel endpoint information
8963  **/
8964 static void i40e_udp_tunnel_del(struct net_device *netdev,
8965                                 struct udp_tunnel_info *ti)
8966 {
8967         struct i40e_netdev_priv *np = netdev_priv(netdev);
8968         struct i40e_vsi *vsi = np->vsi;
8969         struct i40e_pf *pf = vsi->back;
8970         u16 port = ntohs(ti->port);
8971         u8 idx;
8972
8973         idx = i40e_get_udp_port_idx(pf, port);
8974
8975         /* Check if port already exists */
8976         if (idx >= I40E_MAX_PF_UDP_OFFLOAD_PORTS)
8977                 goto not_found;
8978
8979         switch (ti->type) {
8980         case UDP_TUNNEL_TYPE_VXLAN:
8981                 if (pf->udp_ports[idx].type != I40E_AQC_TUNNEL_TYPE_VXLAN)
8982                         goto not_found;
8983                 break;
8984         case UDP_TUNNEL_TYPE_GENEVE:
8985                 if (pf->udp_ports[idx].type != I40E_AQC_TUNNEL_TYPE_NGE)
8986                         goto not_found;
8987                 break;
8988         default:
8989                 goto not_found;
8990         }
8991
8992         /* if port exists, set it to 0 (mark for deletion)
8993          * and make it pending
8994          */
8995         pf->udp_ports[idx].index = 0;
8996         pf->pending_udp_bitmap |= BIT_ULL(idx);
8997         pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
8998
8999         return;
9000 not_found:
9001         netdev_warn(netdev, "UDP port %d was not found, not deleting\n",
9002                     port);
9003 }
9004
9005 static int i40e_get_phys_port_id(struct net_device *netdev,
9006                                  struct netdev_phys_item_id *ppid)
9007 {
9008         struct i40e_netdev_priv *np = netdev_priv(netdev);
9009         struct i40e_pf *pf = np->vsi->back;
9010         struct i40e_hw *hw = &pf->hw;
9011
9012         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
9013                 return -EOPNOTSUPP;
9014
9015         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
9016         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
9017
9018         return 0;
9019 }
9020
9021 /**
9022  * i40e_ndo_fdb_add - add an entry to the hardware database
9023  * @ndm: the input from the stack
9024  * @tb: pointer to array of nladdr (unused)
9025  * @dev: the net device pointer
9026  * @addr: the MAC address entry being added
9027  * @flags: instructions from stack about fdb operation
9028  */
9029 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
9030                             struct net_device *dev,
9031                             const unsigned char *addr, u16 vid,
9032                             u16 flags)
9033 {
9034         struct i40e_netdev_priv *np = netdev_priv(dev);
9035         struct i40e_pf *pf = np->vsi->back;
9036         int err = 0;
9037
9038         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
9039                 return -EOPNOTSUPP;
9040
9041         if (vid) {
9042                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
9043                 return -EINVAL;
9044         }
9045
9046         /* Hardware does not support aging addresses so if a
9047          * ndm_state is given only allow permanent addresses
9048          */
9049         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
9050                 netdev_info(dev, "FDB only supports static addresses\n");
9051                 return -EINVAL;
9052         }
9053
9054         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
9055                 err = dev_uc_add_excl(dev, addr);
9056         else if (is_multicast_ether_addr(addr))
9057                 err = dev_mc_add_excl(dev, addr);
9058         else
9059                 err = -EINVAL;
9060
9061         /* Only return duplicate errors if NLM_F_EXCL is set */
9062         if (err == -EEXIST && !(flags & NLM_F_EXCL))
9063                 err = 0;
9064
9065         return err;
9066 }
9067
9068 /**
9069  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
9070  * @dev: the netdev being configured
9071  * @nlh: RTNL message
9072  *
9073  * Inserts a new hardware bridge if not already created and
9074  * enables the bridging mode requested (VEB or VEPA). If the
9075  * hardware bridge has already been inserted and the request
9076  * is to change the mode then that requires a PF reset to
9077  * allow rebuild of the components with required hardware
9078  * bridge mode enabled.
9079  *
9080  * Note: expects to be called while under rtnl_lock()
9081  **/
9082 static int i40e_ndo_bridge_setlink(struct net_device *dev,
9083                                    struct nlmsghdr *nlh,
9084                                    u16 flags)
9085 {
9086         struct i40e_netdev_priv *np = netdev_priv(dev);
9087         struct i40e_vsi *vsi = np->vsi;
9088         struct i40e_pf *pf = vsi->back;
9089         struct i40e_veb *veb = NULL;
9090         struct nlattr *attr, *br_spec;
9091         int i, rem;
9092
9093         /* Only for PF VSI for now */
9094         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
9095                 return -EOPNOTSUPP;
9096
9097         /* Find the HW bridge for PF VSI */
9098         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9099                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9100                         veb = pf->veb[i];
9101         }
9102
9103         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
9104
9105         nla_for_each_nested(attr, br_spec, rem) {
9106                 __u16 mode;
9107
9108                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
9109                         continue;
9110
9111                 mode = nla_get_u16(attr);
9112                 if ((mode != BRIDGE_MODE_VEPA) &&
9113                     (mode != BRIDGE_MODE_VEB))
9114                         return -EINVAL;
9115
9116                 /* Insert a new HW bridge */
9117                 if (!veb) {
9118                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
9119                                              vsi->tc_config.enabled_tc);
9120                         if (veb) {
9121                                 veb->bridge_mode = mode;
9122                                 i40e_config_bridge_mode(veb);
9123                         } else {
9124                                 /* No Bridge HW offload available */
9125                                 return -ENOENT;
9126                         }
9127                         break;
9128                 } else if (mode != veb->bridge_mode) {
9129                         /* Existing HW bridge but different mode needs reset */
9130                         veb->bridge_mode = mode;
9131                         /* TODO: If no VFs or VMDq VSIs, disallow VEB mode */
9132                         if (mode == BRIDGE_MODE_VEB)
9133                                 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
9134                         else
9135                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
9136                         i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED),
9137                                       true);
9138                         break;
9139                 }
9140         }
9141
9142         return 0;
9143 }
9144
9145 /**
9146  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
9147  * @skb: skb buff
9148  * @pid: process id
9149  * @seq: RTNL message seq #
9150  * @dev: the netdev being configured
9151  * @filter_mask: unused
9152  * @nlflags: netlink flags passed in
9153  *
9154  * Return the mode in which the hardware bridge is operating in
9155  * i.e VEB or VEPA.
9156  **/
9157 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
9158                                    struct net_device *dev,
9159                                    u32 __always_unused filter_mask,
9160                                    int nlflags)
9161 {
9162         struct i40e_netdev_priv *np = netdev_priv(dev);
9163         struct i40e_vsi *vsi = np->vsi;
9164         struct i40e_pf *pf = vsi->back;
9165         struct i40e_veb *veb = NULL;
9166         int i;
9167
9168         /* Only for PF VSI for now */
9169         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
9170                 return -EOPNOTSUPP;
9171
9172         /* Find the HW bridge for the PF VSI */
9173         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9174                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9175                         veb = pf->veb[i];
9176         }
9177
9178         if (!veb)
9179                 return 0;
9180
9181         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
9182                                        0, 0, nlflags, filter_mask, NULL);
9183 }
9184
9185 /**
9186  * i40e_features_check - Validate encapsulated packet conforms to limits
9187  * @skb: skb buff
9188  * @dev: This physical port's netdev
9189  * @features: Offload features that the stack believes apply
9190  **/
9191 static netdev_features_t i40e_features_check(struct sk_buff *skb,
9192                                              struct net_device *dev,
9193                                              netdev_features_t features)
9194 {
9195         size_t len;
9196
9197         /* No point in doing any of this if neither checksum nor GSO are
9198          * being requested for this frame.  We can rule out both by just
9199          * checking for CHECKSUM_PARTIAL
9200          */
9201         if (skb->ip_summed != CHECKSUM_PARTIAL)
9202                 return features;
9203
9204         /* We cannot support GSO if the MSS is going to be less than
9205          * 64 bytes.  If it is then we need to drop support for GSO.
9206          */
9207         if (skb_is_gso(skb) && (skb_shinfo(skb)->gso_size < 64))
9208                 features &= ~NETIF_F_GSO_MASK;
9209
9210         /* MACLEN can support at most 63 words */
9211         len = skb_network_header(skb) - skb->data;
9212         if (len & ~(63 * 2))
9213                 goto out_err;
9214
9215         /* IPLEN and EIPLEN can support at most 127 dwords */
9216         len = skb_transport_header(skb) - skb_network_header(skb);
9217         if (len & ~(127 * 4))
9218                 goto out_err;
9219
9220         if (skb->encapsulation) {
9221                 /* L4TUNLEN can support 127 words */
9222                 len = skb_inner_network_header(skb) - skb_transport_header(skb);
9223                 if (len & ~(127 * 2))
9224                         goto out_err;
9225
9226                 /* IPLEN can support at most 127 dwords */
9227                 len = skb_inner_transport_header(skb) -
9228                       skb_inner_network_header(skb);
9229                 if (len & ~(127 * 4))
9230                         goto out_err;
9231         }
9232
9233         /* No need to validate L4LEN as TCP is the only protocol with a
9234          * a flexible value and we support all possible values supported
9235          * by TCP, which is at most 15 dwords
9236          */
9237
9238         return features;
9239 out_err:
9240         return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
9241 }
9242
9243 static const struct net_device_ops i40e_netdev_ops = {
9244         .ndo_open               = i40e_open,
9245         .ndo_stop               = i40e_close,
9246         .ndo_start_xmit         = i40e_lan_xmit_frame,
9247         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
9248         .ndo_set_rx_mode        = i40e_set_rx_mode,
9249         .ndo_validate_addr      = eth_validate_addr,
9250         .ndo_set_mac_address    = i40e_set_mac,
9251         .ndo_change_mtu         = i40e_change_mtu,
9252         .ndo_do_ioctl           = i40e_ioctl,
9253         .ndo_tx_timeout         = i40e_tx_timeout,
9254         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
9255         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
9256 #ifdef CONFIG_NET_POLL_CONTROLLER
9257         .ndo_poll_controller    = i40e_netpoll,
9258 #endif
9259         .ndo_setup_tc           = __i40e_setup_tc,
9260         .ndo_set_features       = i40e_set_features,
9261         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
9262         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
9263         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
9264         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
9265         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
9266         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
9267         .ndo_set_vf_trust       = i40e_ndo_set_vf_trust,
9268         .ndo_udp_tunnel_add     = i40e_udp_tunnel_add,
9269         .ndo_udp_tunnel_del     = i40e_udp_tunnel_del,
9270         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
9271         .ndo_fdb_add            = i40e_ndo_fdb_add,
9272         .ndo_features_check     = i40e_features_check,
9273         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
9274         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
9275 };
9276
9277 /**
9278  * i40e_config_netdev - Setup the netdev flags
9279  * @vsi: the VSI being configured
9280  *
9281  * Returns 0 on success, negative value on failure
9282  **/
9283 static int i40e_config_netdev(struct i40e_vsi *vsi)
9284 {
9285         struct i40e_pf *pf = vsi->back;
9286         struct i40e_hw *hw = &pf->hw;
9287         struct i40e_netdev_priv *np;
9288         struct net_device *netdev;
9289         u8 broadcast[ETH_ALEN];
9290         u8 mac_addr[ETH_ALEN];
9291         int etherdev_size;
9292         netdev_features_t hw_enc_features;
9293         netdev_features_t hw_features;
9294
9295         etherdev_size = sizeof(struct i40e_netdev_priv);
9296         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
9297         if (!netdev)
9298                 return -ENOMEM;
9299
9300         vsi->netdev = netdev;
9301         np = netdev_priv(netdev);
9302         np->vsi = vsi;
9303
9304         hw_enc_features = NETIF_F_SG                    |
9305                           NETIF_F_IP_CSUM               |
9306                           NETIF_F_IPV6_CSUM             |
9307                           NETIF_F_HIGHDMA               |
9308                           NETIF_F_SOFT_FEATURES         |
9309                           NETIF_F_TSO                   |
9310                           NETIF_F_TSO_ECN               |
9311                           NETIF_F_TSO6                  |
9312                           NETIF_F_GSO_GRE               |
9313                           NETIF_F_GSO_GRE_CSUM          |
9314                           NETIF_F_GSO_PARTIAL           |
9315                           NETIF_F_GSO_UDP_TUNNEL        |
9316                           NETIF_F_GSO_UDP_TUNNEL_CSUM   |
9317                           NETIF_F_SCTP_CRC              |
9318                           NETIF_F_RXHASH                |
9319                           NETIF_F_RXCSUM                |
9320                           0;
9321
9322         if (!(pf->flags & I40E_FLAG_OUTER_UDP_CSUM_CAPABLE))
9323                 netdev->gso_partial_features |= NETIF_F_GSO_UDP_TUNNEL_CSUM;
9324
9325         netdev->gso_partial_features |= NETIF_F_GSO_GRE_CSUM;
9326
9327         netdev->hw_enc_features |= hw_enc_features;
9328
9329         /* record features VLANs can make use of */
9330         netdev->vlan_features |= hw_enc_features | NETIF_F_TSO_MANGLEID;
9331
9332         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
9333                 netdev->hw_features |= NETIF_F_NTUPLE;
9334         hw_features = hw_enc_features           |
9335                       NETIF_F_HW_VLAN_CTAG_TX   |
9336                       NETIF_F_HW_VLAN_CTAG_RX;
9337
9338         netdev->hw_features |= hw_features;
9339
9340         netdev->features |= hw_features | NETIF_F_HW_VLAN_CTAG_FILTER;
9341         netdev->hw_enc_features |= NETIF_F_TSO_MANGLEID;
9342
9343         if (vsi->type == I40E_VSI_MAIN) {
9344                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
9345                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
9346                 /* The following steps are necessary for two reasons. First,
9347                  * some older NVM configurations load a default MAC-VLAN
9348                  * filter that will accept any tagged packet, and we want to
9349                  * replace this with a normal filter. Additionally, it is
9350                  * possible our MAC address was provided by the platform using
9351                  * Open Firmware or similar.
9352                  *
9353                  * Thus, we need to remove the default filter and install one
9354                  * specific to the MAC address.
9355                  */
9356                 i40e_rm_default_mac_filter(vsi, mac_addr);
9357                 spin_lock_bh(&vsi->mac_filter_hash_lock);
9358                 i40e_add_mac_filter(vsi, mac_addr);
9359                 spin_unlock_bh(&vsi->mac_filter_hash_lock);
9360         } else {
9361                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
9362                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
9363                          pf->vsi[pf->lan_vsi]->netdev->name);
9364                 random_ether_addr(mac_addr);
9365
9366                 spin_lock_bh(&vsi->mac_filter_hash_lock);
9367                 i40e_add_mac_filter(vsi, mac_addr);
9368                 spin_unlock_bh(&vsi->mac_filter_hash_lock);
9369         }
9370
9371         /* Add the broadcast filter so that we initially will receive
9372          * broadcast packets. Note that when a new VLAN is first added the
9373          * driver will convert all filters marked I40E_VLAN_ANY into VLAN
9374          * specific filters as part of transitioning into "vlan" operation.
9375          * When more VLANs are added, the driver will copy each existing MAC
9376          * filter and add it for the new VLAN.
9377          *
9378          * Broadcast filters are handled specially by
9379          * i40e_sync_filters_subtask, as the driver must to set the broadcast
9380          * promiscuous bit instead of adding this directly as a MAC/VLAN
9381          * filter. The subtask will update the correct broadcast promiscuous
9382          * bits as VLANs become active or inactive.
9383          */
9384         eth_broadcast_addr(broadcast);
9385         spin_lock_bh(&vsi->mac_filter_hash_lock);
9386         i40e_add_mac_filter(vsi, broadcast);
9387         spin_unlock_bh(&vsi->mac_filter_hash_lock);
9388
9389         ether_addr_copy(netdev->dev_addr, mac_addr);
9390         ether_addr_copy(netdev->perm_addr, mac_addr);
9391
9392         netdev->priv_flags |= IFF_UNICAST_FLT;
9393         netdev->priv_flags |= IFF_SUPP_NOFCS;
9394         /* Setup netdev TC information */
9395         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
9396
9397         netdev->netdev_ops = &i40e_netdev_ops;
9398         netdev->watchdog_timeo = 5 * HZ;
9399         i40e_set_ethtool_ops(netdev);
9400
9401         /* MTU range: 68 - 9706 */
9402         netdev->min_mtu = ETH_MIN_MTU;
9403         netdev->max_mtu = I40E_MAX_RXBUFFER -
9404                           (ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN);
9405
9406         return 0;
9407 }
9408
9409 /**
9410  * i40e_vsi_delete - Delete a VSI from the switch
9411  * @vsi: the VSI being removed
9412  *
9413  * Returns 0 on success, negative value on failure
9414  **/
9415 static void i40e_vsi_delete(struct i40e_vsi *vsi)
9416 {
9417         /* remove default VSI is not allowed */
9418         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
9419                 return;
9420
9421         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
9422 }
9423
9424 /**
9425  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
9426  * @vsi: the VSI being queried
9427  *
9428  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
9429  **/
9430 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
9431 {
9432         struct i40e_veb *veb;
9433         struct i40e_pf *pf = vsi->back;
9434
9435         /* Uplink is not a bridge so default to VEB */
9436         if (vsi->veb_idx == I40E_NO_VEB)
9437                 return 1;
9438
9439         veb = pf->veb[vsi->veb_idx];
9440         if (!veb) {
9441                 dev_info(&pf->pdev->dev,
9442                          "There is no veb associated with the bridge\n");
9443                 return -ENOENT;
9444         }
9445
9446         /* Uplink is a bridge in VEPA mode */
9447         if (veb->bridge_mode & BRIDGE_MODE_VEPA) {
9448                 return 0;
9449         } else {
9450                 /* Uplink is a bridge in VEB mode */
9451                 return 1;
9452         }
9453
9454         /* VEPA is now default bridge, so return 0 */
9455         return 0;
9456 }
9457
9458 /**
9459  * i40e_add_vsi - Add a VSI to the switch
9460  * @vsi: the VSI being configured
9461  *
9462  * This initializes a VSI context depending on the VSI type to be added and
9463  * passes it down to the add_vsi aq command.
9464  **/
9465 static int i40e_add_vsi(struct i40e_vsi *vsi)
9466 {
9467         int ret = -ENODEV;
9468         struct i40e_pf *pf = vsi->back;
9469         struct i40e_hw *hw = &pf->hw;
9470         struct i40e_vsi_context ctxt;
9471         struct i40e_mac_filter *f;
9472         struct hlist_node *h;
9473         int bkt;
9474
9475         u8 enabled_tc = 0x1; /* TC0 enabled */
9476         int f_count = 0;
9477
9478         memset(&ctxt, 0, sizeof(ctxt));
9479         switch (vsi->type) {
9480         case I40E_VSI_MAIN:
9481                 /* The PF's main VSI is already setup as part of the
9482                  * device initialization, so we'll not bother with
9483                  * the add_vsi call, but we will retrieve the current
9484                  * VSI context.
9485                  */
9486                 ctxt.seid = pf->main_vsi_seid;
9487                 ctxt.pf_num = pf->hw.pf_id;
9488                 ctxt.vf_num = 0;
9489                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
9490                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9491                 if (ret) {
9492                         dev_info(&pf->pdev->dev,
9493                                  "couldn't get PF vsi config, err %s aq_err %s\n",
9494                                  i40e_stat_str(&pf->hw, ret),
9495                                  i40e_aq_str(&pf->hw,
9496                                              pf->hw.aq.asq_last_status));
9497                         return -ENOENT;
9498                 }
9499                 vsi->info = ctxt.info;
9500                 vsi->info.valid_sections = 0;
9501
9502                 vsi->seid = ctxt.seid;
9503                 vsi->id = ctxt.vsi_number;
9504
9505                 enabled_tc = i40e_pf_get_tc_map(pf);
9506
9507                 /* MFP mode setup queue map and update VSI */
9508                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
9509                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
9510                         memset(&ctxt, 0, sizeof(ctxt));
9511                         ctxt.seid = pf->main_vsi_seid;
9512                         ctxt.pf_num = pf->hw.pf_id;
9513                         ctxt.vf_num = 0;
9514                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
9515                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
9516                         if (ret) {
9517                                 dev_info(&pf->pdev->dev,
9518                                          "update vsi failed, err %s aq_err %s\n",
9519                                          i40e_stat_str(&pf->hw, ret),
9520                                          i40e_aq_str(&pf->hw,
9521                                                     pf->hw.aq.asq_last_status));
9522                                 ret = -ENOENT;
9523                                 goto err;
9524                         }
9525                         /* update the local VSI info queue map */
9526                         i40e_vsi_update_queue_map(vsi, &ctxt);
9527                         vsi->info.valid_sections = 0;
9528                 } else {
9529                         /* Default/Main VSI is only enabled for TC0
9530                          * reconfigure it to enable all TCs that are
9531                          * available on the port in SFP mode.
9532                          * For MFP case the iSCSI PF would use this
9533                          * flow to enable LAN+iSCSI TC.
9534                          */
9535                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
9536                         if (ret) {
9537                                 dev_info(&pf->pdev->dev,
9538                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %s aq_err %s\n",
9539                                          enabled_tc,
9540                                          i40e_stat_str(&pf->hw, ret),
9541                                          i40e_aq_str(&pf->hw,
9542                                                     pf->hw.aq.asq_last_status));
9543                                 ret = -ENOENT;
9544                         }
9545                 }
9546                 break;
9547
9548         case I40E_VSI_FDIR:
9549                 ctxt.pf_num = hw->pf_id;
9550                 ctxt.vf_num = 0;
9551                 ctxt.uplink_seid = vsi->uplink_seid;
9552                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9553                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9554                 if ((pf->flags & I40E_FLAG_VEB_MODE_ENABLED) &&
9555                     (i40e_is_vsi_uplink_mode_veb(vsi))) {
9556                         ctxt.info.valid_sections |=
9557                              cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9558                         ctxt.info.switch_id =
9559                            cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9560                 }
9561                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9562                 break;
9563
9564         case I40E_VSI_VMDQ2:
9565                 ctxt.pf_num = hw->pf_id;
9566                 ctxt.vf_num = 0;
9567                 ctxt.uplink_seid = vsi->uplink_seid;
9568                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9569                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
9570
9571                 /* This VSI is connected to VEB so the switch_id
9572                  * should be set to zero by default.
9573                  */
9574                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
9575                         ctxt.info.valid_sections |=
9576                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9577                         ctxt.info.switch_id =
9578                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9579                 }
9580
9581                 /* Setup the VSI tx/rx queue map for TC0 only for now */
9582                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9583                 break;
9584
9585         case I40E_VSI_SRIOV:
9586                 ctxt.pf_num = hw->pf_id;
9587                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
9588                 ctxt.uplink_seid = vsi->uplink_seid;
9589                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9590                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
9591
9592                 /* This VSI is connected to VEB so the switch_id
9593                  * should be set to zero by default.
9594                  */
9595                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
9596                         ctxt.info.valid_sections |=
9597                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9598                         ctxt.info.switch_id =
9599                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9600                 }
9601
9602                 if (vsi->back->flags & I40E_FLAG_IWARP_ENABLED) {
9603                         ctxt.info.valid_sections |=
9604                                 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
9605                         ctxt.info.queueing_opt_flags |=
9606                                 (I40E_AQ_VSI_QUE_OPT_TCP_ENA |
9607                                  I40E_AQ_VSI_QUE_OPT_RSS_LUT_VSI);
9608                 }
9609
9610                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
9611                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
9612                 if (pf->vf[vsi->vf_id].spoofchk) {
9613                         ctxt.info.valid_sections |=
9614                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
9615                         ctxt.info.sec_flags |=
9616                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
9617                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
9618                 }
9619                 /* Setup the VSI tx/rx queue map for TC0 only for now */
9620                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9621                 break;
9622
9623         case I40E_VSI_IWARP:
9624                 /* send down message to iWARP */
9625                 break;
9626
9627         default:
9628                 return -ENODEV;
9629         }
9630
9631         if (vsi->type != I40E_VSI_MAIN) {
9632                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
9633                 if (ret) {
9634                         dev_info(&vsi->back->pdev->dev,
9635                                  "add vsi failed, err %s aq_err %s\n",
9636                                  i40e_stat_str(&pf->hw, ret),
9637                                  i40e_aq_str(&pf->hw,
9638                                              pf->hw.aq.asq_last_status));
9639                         ret = -ENOENT;
9640                         goto err;
9641                 }
9642                 vsi->info = ctxt.info;
9643                 vsi->info.valid_sections = 0;
9644                 vsi->seid = ctxt.seid;
9645                 vsi->id = ctxt.vsi_number;
9646         }
9647
9648         vsi->active_filters = 0;
9649         clear_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state);
9650         spin_lock_bh(&vsi->mac_filter_hash_lock);
9651         /* If macvlan filters already exist, force them to get loaded */
9652         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
9653                 f->state = I40E_FILTER_NEW;
9654                 f_count++;
9655         }
9656         spin_unlock_bh(&vsi->mac_filter_hash_lock);
9657
9658         if (f_count) {
9659                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
9660                 pf->flags |= I40E_FLAG_FILTER_SYNC;
9661         }
9662
9663         /* Update VSI BW information */
9664         ret = i40e_vsi_get_bw_info(vsi);
9665         if (ret) {
9666                 dev_info(&pf->pdev->dev,
9667                          "couldn't get vsi bw info, err %s aq_err %s\n",
9668                          i40e_stat_str(&pf->hw, ret),
9669                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9670                 /* VSI is already added so not tearing that up */
9671                 ret = 0;
9672         }
9673
9674 err:
9675         return ret;
9676 }
9677
9678 /**
9679  * i40e_vsi_release - Delete a VSI and free its resources
9680  * @vsi: the VSI being removed
9681  *
9682  * Returns 0 on success or < 0 on error
9683  **/
9684 int i40e_vsi_release(struct i40e_vsi *vsi)
9685 {
9686         struct i40e_mac_filter *f;
9687         struct hlist_node *h;
9688         struct i40e_veb *veb = NULL;
9689         struct i40e_pf *pf;
9690         u16 uplink_seid;
9691         int i, n, bkt;
9692
9693         pf = vsi->back;
9694
9695         /* release of a VEB-owner or last VSI is not allowed */
9696         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
9697                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
9698                          vsi->seid, vsi->uplink_seid);
9699                 return -ENODEV;
9700         }
9701         if (vsi == pf->vsi[pf->lan_vsi] &&
9702             !test_bit(__I40E_DOWN, &pf->state)) {
9703                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
9704                 return -ENODEV;
9705         }
9706
9707         uplink_seid = vsi->uplink_seid;
9708         if (vsi->type != I40E_VSI_SRIOV) {
9709                 if (vsi->netdev_registered) {
9710                         vsi->netdev_registered = false;
9711                         if (vsi->netdev) {
9712                                 /* results in a call to i40e_close() */
9713                                 unregister_netdev(vsi->netdev);
9714                         }
9715                 } else {
9716                         i40e_vsi_close(vsi);
9717                 }
9718                 i40e_vsi_disable_irq(vsi);
9719         }
9720
9721         spin_lock_bh(&vsi->mac_filter_hash_lock);
9722
9723         /* clear the sync flag on all filters */
9724         if (vsi->netdev) {
9725                 __dev_uc_unsync(vsi->netdev, NULL);
9726                 __dev_mc_unsync(vsi->netdev, NULL);
9727         }
9728
9729         /* make sure any remaining filters are marked for deletion */
9730         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist)
9731                 __i40e_del_filter(vsi, f);
9732
9733         spin_unlock_bh(&vsi->mac_filter_hash_lock);
9734
9735         i40e_sync_vsi_filters(vsi);
9736
9737         i40e_vsi_delete(vsi);
9738         i40e_vsi_free_q_vectors(vsi);
9739         if (vsi->netdev) {
9740                 free_netdev(vsi->netdev);
9741                 vsi->netdev = NULL;
9742         }
9743         i40e_vsi_clear_rings(vsi);
9744         i40e_vsi_clear(vsi);
9745
9746         /* If this was the last thing on the VEB, except for the
9747          * controlling VSI, remove the VEB, which puts the controlling
9748          * VSI onto the next level down in the switch.
9749          *
9750          * Well, okay, there's one more exception here: don't remove
9751          * the orphan VEBs yet.  We'll wait for an explicit remove request
9752          * from up the network stack.
9753          */
9754         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
9755                 if (pf->vsi[i] &&
9756                     pf->vsi[i]->uplink_seid == uplink_seid &&
9757                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9758                         n++;      /* count the VSIs */
9759                 }
9760         }
9761         for (i = 0; i < I40E_MAX_VEB; i++) {
9762                 if (!pf->veb[i])
9763                         continue;
9764                 if (pf->veb[i]->uplink_seid == uplink_seid)
9765                         n++;     /* count the VEBs */
9766                 if (pf->veb[i]->seid == uplink_seid)
9767                         veb = pf->veb[i];
9768         }
9769         if (n == 0 && veb && veb->uplink_seid != 0)
9770                 i40e_veb_release(veb);
9771
9772         return 0;
9773 }
9774
9775 /**
9776  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
9777  * @vsi: ptr to the VSI
9778  *
9779  * This should only be called after i40e_vsi_mem_alloc() which allocates the
9780  * corresponding SW VSI structure and initializes num_queue_pairs for the
9781  * newly allocated VSI.
9782  *
9783  * Returns 0 on success or negative on failure
9784  **/
9785 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
9786 {
9787         int ret = -ENOENT;
9788         struct i40e_pf *pf = vsi->back;
9789
9790         if (vsi->q_vectors[0]) {
9791                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
9792                          vsi->seid);
9793                 return -EEXIST;
9794         }
9795
9796         if (vsi->base_vector) {
9797                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
9798                          vsi->seid, vsi->base_vector);
9799                 return -EEXIST;
9800         }
9801
9802         ret = i40e_vsi_alloc_q_vectors(vsi);
9803         if (ret) {
9804                 dev_info(&pf->pdev->dev,
9805                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
9806                          vsi->num_q_vectors, vsi->seid, ret);
9807                 vsi->num_q_vectors = 0;
9808                 goto vector_setup_out;
9809         }
9810
9811         /* In Legacy mode, we do not have to get any other vector since we
9812          * piggyback on the misc/ICR0 for queue interrupts.
9813         */
9814         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
9815                 return ret;
9816         if (vsi->num_q_vectors)
9817                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
9818                                                  vsi->num_q_vectors, vsi->idx);
9819         if (vsi->base_vector < 0) {
9820                 dev_info(&pf->pdev->dev,
9821                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
9822                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
9823                 i40e_vsi_free_q_vectors(vsi);
9824                 ret = -ENOENT;
9825                 goto vector_setup_out;
9826         }
9827
9828 vector_setup_out:
9829         return ret;
9830 }
9831
9832 /**
9833  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
9834  * @vsi: pointer to the vsi.
9835  *
9836  * This re-allocates a vsi's queue resources.
9837  *
9838  * Returns pointer to the successfully allocated and configured VSI sw struct
9839  * on success, otherwise returns NULL on failure.
9840  **/
9841 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
9842 {
9843         struct i40e_pf *pf;
9844         u8 enabled_tc;
9845         int ret;
9846
9847         if (!vsi)
9848                 return NULL;
9849
9850         pf = vsi->back;
9851
9852         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
9853         i40e_vsi_clear_rings(vsi);
9854
9855         i40e_vsi_free_arrays(vsi, false);
9856         i40e_set_num_rings_in_vsi(vsi);
9857         ret = i40e_vsi_alloc_arrays(vsi, false);
9858         if (ret)
9859                 goto err_vsi;
9860
9861         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
9862         if (ret < 0) {
9863                 dev_info(&pf->pdev->dev,
9864                          "failed to get tracking for %d queues for VSI %d err %d\n",
9865                          vsi->alloc_queue_pairs, vsi->seid, ret);
9866                 goto err_vsi;
9867         }
9868         vsi->base_queue = ret;
9869
9870         /* Update the FW view of the VSI. Force a reset of TC and queue
9871          * layout configurations.
9872          */
9873         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
9874         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
9875         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
9876         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
9877         if (vsi->type == I40E_VSI_MAIN)
9878                 i40e_rm_default_mac_filter(vsi, pf->hw.mac.perm_addr);
9879
9880         /* assign it some queues */
9881         ret = i40e_alloc_rings(vsi);
9882         if (ret)
9883                 goto err_rings;
9884
9885         /* map all of the rings to the q_vectors */
9886         i40e_vsi_map_rings_to_vectors(vsi);
9887         return vsi;
9888
9889 err_rings:
9890         i40e_vsi_free_q_vectors(vsi);
9891         if (vsi->netdev_registered) {
9892                 vsi->netdev_registered = false;
9893                 unregister_netdev(vsi->netdev);
9894                 free_netdev(vsi->netdev);
9895                 vsi->netdev = NULL;
9896         }
9897         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9898 err_vsi:
9899         i40e_vsi_clear(vsi);
9900         return NULL;
9901 }
9902
9903 /**
9904  * i40e_vsi_setup - Set up a VSI by a given type
9905  * @pf: board private structure
9906  * @type: VSI type
9907  * @uplink_seid: the switch element to link to
9908  * @param1: usage depends upon VSI type. For VF types, indicates VF id
9909  *
9910  * This allocates the sw VSI structure and its queue resources, then add a VSI
9911  * to the identified VEB.
9912  *
9913  * Returns pointer to the successfully allocated and configure VSI sw struct on
9914  * success, otherwise returns NULL on failure.
9915  **/
9916 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
9917                                 u16 uplink_seid, u32 param1)
9918 {
9919         struct i40e_vsi *vsi = NULL;
9920         struct i40e_veb *veb = NULL;
9921         int ret, i;
9922         int v_idx;
9923
9924         /* The requested uplink_seid must be either
9925          *     - the PF's port seid
9926          *              no VEB is needed because this is the PF
9927          *              or this is a Flow Director special case VSI
9928          *     - seid of an existing VEB
9929          *     - seid of a VSI that owns an existing VEB
9930          *     - seid of a VSI that doesn't own a VEB
9931          *              a new VEB is created and the VSI becomes the owner
9932          *     - seid of the PF VSI, which is what creates the first VEB
9933          *              this is a special case of the previous
9934          *
9935          * Find which uplink_seid we were given and create a new VEB if needed
9936          */
9937         for (i = 0; i < I40E_MAX_VEB; i++) {
9938                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
9939                         veb = pf->veb[i];
9940                         break;
9941                 }
9942         }
9943
9944         if (!veb && uplink_seid != pf->mac_seid) {
9945
9946                 for (i = 0; i < pf->num_alloc_vsi; i++) {
9947                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
9948                                 vsi = pf->vsi[i];
9949                                 break;
9950                         }
9951                 }
9952                 if (!vsi) {
9953                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
9954                                  uplink_seid);
9955                         return NULL;
9956                 }
9957
9958                 if (vsi->uplink_seid == pf->mac_seid)
9959                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
9960                                              vsi->tc_config.enabled_tc);
9961                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
9962                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
9963                                              vsi->tc_config.enabled_tc);
9964                 if (veb) {
9965                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
9966                                 dev_info(&vsi->back->pdev->dev,
9967                                          "New VSI creation error, uplink seid of LAN VSI expected.\n");
9968                                 return NULL;
9969                         }
9970                         /* We come up by default in VEPA mode if SRIOV is not
9971                          * already enabled, in which case we can't force VEPA
9972                          * mode.
9973                          */
9974                         if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
9975                                 veb->bridge_mode = BRIDGE_MODE_VEPA;
9976                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
9977                         }
9978                         i40e_config_bridge_mode(veb);
9979                 }
9980                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9981                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9982                                 veb = pf->veb[i];
9983                 }
9984                 if (!veb) {
9985                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
9986                         return NULL;
9987                 }
9988
9989                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9990                 uplink_seid = veb->seid;
9991         }
9992
9993         /* get vsi sw struct */
9994         v_idx = i40e_vsi_mem_alloc(pf, type);
9995         if (v_idx < 0)
9996                 goto err_alloc;
9997         vsi = pf->vsi[v_idx];
9998         if (!vsi)
9999                 goto err_alloc;
10000         vsi->type = type;
10001         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
10002
10003         if (type == I40E_VSI_MAIN)
10004                 pf->lan_vsi = v_idx;
10005         else if (type == I40E_VSI_SRIOV)
10006                 vsi->vf_id = param1;
10007         /* assign it some queues */
10008         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
10009                                 vsi->idx);
10010         if (ret < 0) {
10011                 dev_info(&pf->pdev->dev,
10012                          "failed to get tracking for %d queues for VSI %d err=%d\n",
10013                          vsi->alloc_queue_pairs, vsi->seid, ret);
10014                 goto err_vsi;
10015         }
10016         vsi->base_queue = ret;
10017
10018         /* get a VSI from the hardware */
10019         vsi->uplink_seid = uplink_seid;
10020         ret = i40e_add_vsi(vsi);
10021         if (ret)
10022                 goto err_vsi;
10023
10024         switch (vsi->type) {
10025         /* setup the netdev if needed */
10026         case I40E_VSI_MAIN:
10027                 /* Apply relevant filters if a platform-specific mac
10028                  * address was selected.
10029                  */
10030                 if (!!(pf->flags & I40E_FLAG_PF_MAC)) {
10031                         ret = i40e_macaddr_init(vsi, pf->hw.mac.addr);
10032                         if (ret) {
10033                                 dev_warn(&pf->pdev->dev,
10034                                          "could not set up macaddr; err %d\n",
10035                                          ret);
10036                         }
10037                 }
10038         case I40E_VSI_VMDQ2:
10039                 ret = i40e_config_netdev(vsi);
10040                 if (ret)
10041                         goto err_netdev;
10042                 ret = register_netdev(vsi->netdev);
10043                 if (ret)
10044                         goto err_netdev;
10045                 vsi->netdev_registered = true;
10046                 netif_carrier_off(vsi->netdev);
10047 #ifdef CONFIG_I40E_DCB
10048                 /* Setup DCB netlink interface */
10049                 i40e_dcbnl_setup(vsi);
10050 #endif /* CONFIG_I40E_DCB */
10051                 /* fall through */
10052
10053         case I40E_VSI_FDIR:
10054                 /* set up vectors and rings if needed */
10055                 ret = i40e_vsi_setup_vectors(vsi);
10056                 if (ret)
10057                         goto err_msix;
10058
10059                 ret = i40e_alloc_rings(vsi);
10060                 if (ret)
10061                         goto err_rings;
10062
10063                 /* map all of the rings to the q_vectors */
10064                 i40e_vsi_map_rings_to_vectors(vsi);
10065
10066                 i40e_vsi_reset_stats(vsi);
10067                 break;
10068
10069         default:
10070                 /* no netdev or rings for the other VSI types */
10071                 break;
10072         }
10073
10074         if ((pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) &&
10075             (vsi->type == I40E_VSI_VMDQ2)) {
10076                 ret = i40e_vsi_config_rss(vsi);
10077         }
10078         return vsi;
10079
10080 err_rings:
10081         i40e_vsi_free_q_vectors(vsi);
10082 err_msix:
10083         if (vsi->netdev_registered) {
10084                 vsi->netdev_registered = false;
10085                 unregister_netdev(vsi->netdev);
10086                 free_netdev(vsi->netdev);
10087                 vsi->netdev = NULL;
10088         }
10089 err_netdev:
10090         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
10091 err_vsi:
10092         i40e_vsi_clear(vsi);
10093 err_alloc:
10094         return NULL;
10095 }
10096
10097 /**
10098  * i40e_veb_get_bw_info - Query VEB BW information
10099  * @veb: the veb to query
10100  *
10101  * Query the Tx scheduler BW configuration data for given VEB
10102  **/
10103 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
10104 {
10105         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
10106         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
10107         struct i40e_pf *pf = veb->pf;
10108         struct i40e_hw *hw = &pf->hw;
10109         u32 tc_bw_max;
10110         int ret = 0;
10111         int i;
10112
10113         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
10114                                                   &bw_data, NULL);
10115         if (ret) {
10116                 dev_info(&pf->pdev->dev,
10117                          "query veb bw config failed, err %s aq_err %s\n",
10118                          i40e_stat_str(&pf->hw, ret),
10119                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
10120                 goto out;
10121         }
10122
10123         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
10124                                                    &ets_data, NULL);
10125         if (ret) {
10126                 dev_info(&pf->pdev->dev,
10127                          "query veb bw ets config failed, err %s aq_err %s\n",
10128                          i40e_stat_str(&pf->hw, ret),
10129                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
10130                 goto out;
10131         }
10132
10133         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
10134         veb->bw_max_quanta = ets_data.tc_bw_max;
10135         veb->is_abs_credits = bw_data.absolute_credits_enable;
10136         veb->enabled_tc = ets_data.tc_valid_bits;
10137         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
10138                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
10139         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
10140                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
10141                 veb->bw_tc_limit_credits[i] =
10142                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
10143                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
10144         }
10145
10146 out:
10147         return ret;
10148 }
10149
10150 /**
10151  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
10152  * @pf: board private structure
10153  *
10154  * On error: returns error code (negative)
10155  * On success: returns vsi index in PF (positive)
10156  **/
10157 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
10158 {
10159         int ret = -ENOENT;
10160         struct i40e_veb *veb;
10161         int i;
10162
10163         /* Need to protect the allocation of switch elements at the PF level */
10164         mutex_lock(&pf->switch_mutex);
10165
10166         /* VEB list may be fragmented if VEB creation/destruction has
10167          * been happening.  We can afford to do a quick scan to look
10168          * for any free slots in the list.
10169          *
10170          * find next empty veb slot, looping back around if necessary
10171          */
10172         i = 0;
10173         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
10174                 i++;
10175         if (i >= I40E_MAX_VEB) {
10176                 ret = -ENOMEM;
10177                 goto err_alloc_veb;  /* out of VEB slots! */
10178         }
10179
10180         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
10181         if (!veb) {
10182                 ret = -ENOMEM;
10183                 goto err_alloc_veb;
10184         }
10185         veb->pf = pf;
10186         veb->idx = i;
10187         veb->enabled_tc = 1;
10188
10189         pf->veb[i] = veb;
10190         ret = i;
10191 err_alloc_veb:
10192         mutex_unlock(&pf->switch_mutex);
10193         return ret;
10194 }
10195
10196 /**
10197  * i40e_switch_branch_release - Delete a branch of the switch tree
10198  * @branch: where to start deleting
10199  *
10200  * This uses recursion to find the tips of the branch to be
10201  * removed, deleting until we get back to and can delete this VEB.
10202  **/
10203 static void i40e_switch_branch_release(struct i40e_veb *branch)
10204 {
10205         struct i40e_pf *pf = branch->pf;
10206         u16 branch_seid = branch->seid;
10207         u16 veb_idx = branch->idx;
10208         int i;
10209
10210         /* release any VEBs on this VEB - RECURSION */
10211         for (i = 0; i < I40E_MAX_VEB; i++) {
10212                 if (!pf->veb[i])
10213                         continue;
10214                 if (pf->veb[i]->uplink_seid == branch->seid)
10215                         i40e_switch_branch_release(pf->veb[i]);
10216         }
10217
10218         /* Release the VSIs on this VEB, but not the owner VSI.
10219          *
10220          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
10221          *       the VEB itself, so don't use (*branch) after this loop.
10222          */
10223         for (i = 0; i < pf->num_alloc_vsi; i++) {
10224                 if (!pf->vsi[i])
10225                         continue;
10226                 if (pf->vsi[i]->uplink_seid == branch_seid &&
10227                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
10228                         i40e_vsi_release(pf->vsi[i]);
10229                 }
10230         }
10231
10232         /* There's one corner case where the VEB might not have been
10233          * removed, so double check it here and remove it if needed.
10234          * This case happens if the veb was created from the debugfs
10235          * commands and no VSIs were added to it.
10236          */
10237         if (pf->veb[veb_idx])
10238                 i40e_veb_release(pf->veb[veb_idx]);
10239 }
10240
10241 /**
10242  * i40e_veb_clear - remove veb struct
10243  * @veb: the veb to remove
10244  **/
10245 static void i40e_veb_clear(struct i40e_veb *veb)
10246 {
10247         if (!veb)
10248                 return;
10249
10250         if (veb->pf) {
10251                 struct i40e_pf *pf = veb->pf;
10252
10253                 mutex_lock(&pf->switch_mutex);
10254                 if (pf->veb[veb->idx] == veb)
10255                         pf->veb[veb->idx] = NULL;
10256                 mutex_unlock(&pf->switch_mutex);
10257         }
10258
10259         kfree(veb);
10260 }
10261
10262 /**
10263  * i40e_veb_release - Delete a VEB and free its resources
10264  * @veb: the VEB being removed
10265  **/
10266 void i40e_veb_release(struct i40e_veb *veb)
10267 {
10268         struct i40e_vsi *vsi = NULL;
10269         struct i40e_pf *pf;
10270         int i, n = 0;
10271
10272         pf = veb->pf;
10273
10274         /* find the remaining VSI and check for extras */
10275         for (i = 0; i < pf->num_alloc_vsi; i++) {
10276                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
10277                         n++;
10278                         vsi = pf->vsi[i];
10279                 }
10280         }
10281         if (n != 1) {
10282                 dev_info(&pf->pdev->dev,
10283                          "can't remove VEB %d with %d VSIs left\n",
10284                          veb->seid, n);
10285                 return;
10286         }
10287
10288         /* move the remaining VSI to uplink veb */
10289         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
10290         if (veb->uplink_seid) {
10291                 vsi->uplink_seid = veb->uplink_seid;
10292                 if (veb->uplink_seid == pf->mac_seid)
10293                         vsi->veb_idx = I40E_NO_VEB;
10294                 else
10295                         vsi->veb_idx = veb->veb_idx;
10296         } else {
10297                 /* floating VEB */
10298                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
10299                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
10300         }
10301
10302         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
10303         i40e_veb_clear(veb);
10304 }
10305
10306 /**
10307  * i40e_add_veb - create the VEB in the switch
10308  * @veb: the VEB to be instantiated
10309  * @vsi: the controlling VSI
10310  **/
10311 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
10312 {
10313         struct i40e_pf *pf = veb->pf;
10314         bool enable_stats = !!(pf->flags & I40E_FLAG_VEB_STATS_ENABLED);
10315         int ret;
10316
10317         ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid,
10318                               veb->enabled_tc, false,
10319                               &veb->seid, enable_stats, NULL);
10320
10321         /* get a VEB from the hardware */
10322         if (ret) {
10323                 dev_info(&pf->pdev->dev,
10324                          "couldn't add VEB, err %s aq_err %s\n",
10325                          i40e_stat_str(&pf->hw, ret),
10326                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10327                 return -EPERM;
10328         }
10329
10330         /* get statistics counter */
10331         ret = i40e_aq_get_veb_parameters(&pf->hw, veb->seid, NULL, NULL,
10332                                          &veb->stats_idx, NULL, NULL, NULL);
10333         if (ret) {
10334                 dev_info(&pf->pdev->dev,
10335                          "couldn't get VEB statistics idx, err %s aq_err %s\n",
10336                          i40e_stat_str(&pf->hw, ret),
10337                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10338                 return -EPERM;
10339         }
10340         ret = i40e_veb_get_bw_info(veb);
10341         if (ret) {
10342                 dev_info(&pf->pdev->dev,
10343                          "couldn't get VEB bw info, err %s aq_err %s\n",
10344                          i40e_stat_str(&pf->hw, ret),
10345                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10346                 i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
10347                 return -ENOENT;
10348         }
10349
10350         vsi->uplink_seid = veb->seid;
10351         vsi->veb_idx = veb->idx;
10352         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
10353
10354         return 0;
10355 }
10356
10357 /**
10358  * i40e_veb_setup - Set up a VEB
10359  * @pf: board private structure
10360  * @flags: VEB setup flags
10361  * @uplink_seid: the switch element to link to
10362  * @vsi_seid: the initial VSI seid
10363  * @enabled_tc: Enabled TC bit-map
10364  *
10365  * This allocates the sw VEB structure and links it into the switch
10366  * It is possible and legal for this to be a duplicate of an already
10367  * existing VEB.  It is also possible for both uplink and vsi seids
10368  * to be zero, in order to create a floating VEB.
10369  *
10370  * Returns pointer to the successfully allocated VEB sw struct on
10371  * success, otherwise returns NULL on failure.
10372  **/
10373 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
10374                                 u16 uplink_seid, u16 vsi_seid,
10375                                 u8 enabled_tc)
10376 {
10377         struct i40e_veb *veb, *uplink_veb = NULL;
10378         int vsi_idx, veb_idx;
10379         int ret;
10380
10381         /* if one seid is 0, the other must be 0 to create a floating relay */
10382         if ((uplink_seid == 0 || vsi_seid == 0) &&
10383             (uplink_seid + vsi_seid != 0)) {
10384                 dev_info(&pf->pdev->dev,
10385                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
10386                          uplink_seid, vsi_seid);
10387                 return NULL;
10388         }
10389
10390         /* make sure there is such a vsi and uplink */
10391         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
10392                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
10393                         break;
10394         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
10395                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
10396                          vsi_seid);
10397                 return NULL;
10398         }
10399
10400         if (uplink_seid && uplink_seid != pf->mac_seid) {
10401                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
10402                         if (pf->veb[veb_idx] &&
10403                             pf->veb[veb_idx]->seid == uplink_seid) {
10404                                 uplink_veb = pf->veb[veb_idx];
10405                                 break;
10406                         }
10407                 }
10408                 if (!uplink_veb) {
10409                         dev_info(&pf->pdev->dev,
10410                                  "uplink seid %d not found\n", uplink_seid);
10411                         return NULL;
10412                 }
10413         }
10414
10415         /* get veb sw struct */
10416         veb_idx = i40e_veb_mem_alloc(pf);
10417         if (veb_idx < 0)
10418                 goto err_alloc;
10419         veb = pf->veb[veb_idx];
10420         veb->flags = flags;
10421         veb->uplink_seid = uplink_seid;
10422         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
10423         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
10424
10425         /* create the VEB in the switch */
10426         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
10427         if (ret)
10428                 goto err_veb;
10429         if (vsi_idx == pf->lan_vsi)
10430                 pf->lan_veb = veb->idx;
10431
10432         return veb;
10433
10434 err_veb:
10435         i40e_veb_clear(veb);
10436 err_alloc:
10437         return NULL;
10438 }
10439
10440 /**
10441  * i40e_setup_pf_switch_element - set PF vars based on switch type
10442  * @pf: board private structure
10443  * @ele: element we are building info from
10444  * @num_reported: total number of elements
10445  * @printconfig: should we print the contents
10446  *
10447  * helper function to assist in extracting a few useful SEID values.
10448  **/
10449 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
10450                                 struct i40e_aqc_switch_config_element_resp *ele,
10451                                 u16 num_reported, bool printconfig)
10452 {
10453         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
10454         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
10455         u8 element_type = ele->element_type;
10456         u16 seid = le16_to_cpu(ele->seid);
10457
10458         if (printconfig)
10459                 dev_info(&pf->pdev->dev,
10460                          "type=%d seid=%d uplink=%d downlink=%d\n",
10461                          element_type, seid, uplink_seid, downlink_seid);
10462
10463         switch (element_type) {
10464         case I40E_SWITCH_ELEMENT_TYPE_MAC:
10465                 pf->mac_seid = seid;
10466                 break;
10467         case I40E_SWITCH_ELEMENT_TYPE_VEB:
10468                 /* Main VEB? */
10469                 if (uplink_seid != pf->mac_seid)
10470                         break;
10471                 if (pf->lan_veb == I40E_NO_VEB) {
10472                         int v;
10473
10474                         /* find existing or else empty VEB */
10475                         for (v = 0; v < I40E_MAX_VEB; v++) {
10476                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
10477                                         pf->lan_veb = v;
10478                                         break;
10479                                 }
10480                         }
10481                         if (pf->lan_veb == I40E_NO_VEB) {
10482                                 v = i40e_veb_mem_alloc(pf);
10483                                 if (v < 0)
10484                                         break;
10485                                 pf->lan_veb = v;
10486                         }
10487                 }
10488
10489                 pf->veb[pf->lan_veb]->seid = seid;
10490                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
10491                 pf->veb[pf->lan_veb]->pf = pf;
10492                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
10493                 break;
10494         case I40E_SWITCH_ELEMENT_TYPE_VSI:
10495                 if (num_reported != 1)
10496                         break;
10497                 /* This is immediately after a reset so we can assume this is
10498                  * the PF's VSI
10499                  */
10500                 pf->mac_seid = uplink_seid;
10501                 pf->pf_seid = downlink_seid;
10502                 pf->main_vsi_seid = seid;
10503                 if (printconfig)
10504                         dev_info(&pf->pdev->dev,
10505                                  "pf_seid=%d main_vsi_seid=%d\n",
10506                                  pf->pf_seid, pf->main_vsi_seid);
10507                 break;
10508         case I40E_SWITCH_ELEMENT_TYPE_PF:
10509         case I40E_SWITCH_ELEMENT_TYPE_VF:
10510         case I40E_SWITCH_ELEMENT_TYPE_EMP:
10511         case I40E_SWITCH_ELEMENT_TYPE_BMC:
10512         case I40E_SWITCH_ELEMENT_TYPE_PE:
10513         case I40E_SWITCH_ELEMENT_TYPE_PA:
10514                 /* ignore these for now */
10515                 break;
10516         default:
10517                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
10518                          element_type, seid);
10519                 break;
10520         }
10521 }
10522
10523 /**
10524  * i40e_fetch_switch_configuration - Get switch config from firmware
10525  * @pf: board private structure
10526  * @printconfig: should we print the contents
10527  *
10528  * Get the current switch configuration from the device and
10529  * extract a few useful SEID values.
10530  **/
10531 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
10532 {
10533         struct i40e_aqc_get_switch_config_resp *sw_config;
10534         u16 next_seid = 0;
10535         int ret = 0;
10536         u8 *aq_buf;
10537         int i;
10538
10539         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
10540         if (!aq_buf)
10541                 return -ENOMEM;
10542
10543         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
10544         do {
10545                 u16 num_reported, num_total;
10546
10547                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
10548                                                 I40E_AQ_LARGE_BUF,
10549                                                 &next_seid, NULL);
10550                 if (ret) {
10551                         dev_info(&pf->pdev->dev,
10552                                  "get switch config failed err %s aq_err %s\n",
10553                                  i40e_stat_str(&pf->hw, ret),
10554                                  i40e_aq_str(&pf->hw,
10555                                              pf->hw.aq.asq_last_status));
10556                         kfree(aq_buf);
10557                         return -ENOENT;
10558                 }
10559
10560                 num_reported = le16_to_cpu(sw_config->header.num_reported);
10561                 num_total = le16_to_cpu(sw_config->header.num_total);
10562
10563                 if (printconfig)
10564                         dev_info(&pf->pdev->dev,
10565                                  "header: %d reported %d total\n",
10566                                  num_reported, num_total);
10567
10568                 for (i = 0; i < num_reported; i++) {
10569                         struct i40e_aqc_switch_config_element_resp *ele =
10570                                 &sw_config->element[i];
10571
10572                         i40e_setup_pf_switch_element(pf, ele, num_reported,
10573                                                      printconfig);
10574                 }
10575         } while (next_seid != 0);
10576
10577         kfree(aq_buf);
10578         return ret;
10579 }
10580
10581 /**
10582  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
10583  * @pf: board private structure
10584  * @reinit: if the Main VSI needs to re-initialized.
10585  *
10586  * Returns 0 on success, negative value on failure
10587  **/
10588 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
10589 {
10590         u16 flags = 0;
10591         int ret;
10592
10593         /* find out what's out there already */
10594         ret = i40e_fetch_switch_configuration(pf, false);
10595         if (ret) {
10596                 dev_info(&pf->pdev->dev,
10597                          "couldn't fetch switch config, err %s aq_err %s\n",
10598                          i40e_stat_str(&pf->hw, ret),
10599                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10600                 return ret;
10601         }
10602         i40e_pf_reset_stats(pf);
10603
10604         /* set the switch config bit for the whole device to
10605          * support limited promisc or true promisc
10606          * when user requests promisc. The default is limited
10607          * promisc.
10608         */
10609
10610         if ((pf->hw.pf_id == 0) &&
10611             !(pf->flags & I40E_FLAG_TRUE_PROMISC_SUPPORT))
10612                 flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
10613
10614         if (pf->hw.pf_id == 0) {
10615                 u16 valid_flags;
10616
10617                 valid_flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
10618                 ret = i40e_aq_set_switch_config(&pf->hw, flags, valid_flags,
10619                                                 NULL);
10620                 if (ret && pf->hw.aq.asq_last_status != I40E_AQ_RC_ESRCH) {
10621                         dev_info(&pf->pdev->dev,
10622                                  "couldn't set switch config bits, err %s aq_err %s\n",
10623                                  i40e_stat_str(&pf->hw, ret),
10624                                  i40e_aq_str(&pf->hw,
10625                                              pf->hw.aq.asq_last_status));
10626                         /* not a fatal problem, just keep going */
10627                 }
10628         }
10629
10630         /* first time setup */
10631         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
10632                 struct i40e_vsi *vsi = NULL;
10633                 u16 uplink_seid;
10634
10635                 /* Set up the PF VSI associated with the PF's main VSI
10636                  * that is already in the HW switch
10637                  */
10638                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
10639                         uplink_seid = pf->veb[pf->lan_veb]->seid;
10640                 else
10641                         uplink_seid = pf->mac_seid;
10642                 if (pf->lan_vsi == I40E_NO_VSI)
10643                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
10644                 else if (reinit)
10645                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
10646                 if (!vsi) {
10647                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
10648                         i40e_fdir_teardown(pf);
10649                         return -EAGAIN;
10650                 }
10651         } else {
10652                 /* force a reset of TC and queue layout configurations */
10653                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
10654
10655                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
10656                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
10657                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
10658         }
10659         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
10660
10661         i40e_fdir_sb_setup(pf);
10662
10663         /* Setup static PF queue filter control settings */
10664         ret = i40e_setup_pf_filter_control(pf);
10665         if (ret) {
10666                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
10667                          ret);
10668                 /* Failure here should not stop continuing other steps */
10669         }
10670
10671         /* enable RSS in the HW, even for only one queue, as the stack can use
10672          * the hash
10673          */
10674         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
10675                 i40e_pf_config_rss(pf);
10676
10677         /* fill in link information and enable LSE reporting */
10678         i40e_link_event(pf);
10679
10680         /* Initialize user-specific link properties */
10681         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
10682                                   I40E_AQ_AN_COMPLETED) ? true : false);
10683
10684         i40e_ptp_init(pf);
10685
10686         return ret;
10687 }
10688
10689 /**
10690  * i40e_determine_queue_usage - Work out queue distribution
10691  * @pf: board private structure
10692  **/
10693 static void i40e_determine_queue_usage(struct i40e_pf *pf)
10694 {
10695         int queues_left;
10696
10697         pf->num_lan_qps = 0;
10698
10699         /* Find the max queues to be put into basic use.  We'll always be
10700          * using TC0, whether or not DCB is running, and TC0 will get the
10701          * big RSS set.
10702          */
10703         queues_left = pf->hw.func_caps.num_tx_qp;
10704
10705         if ((queues_left == 1) ||
10706             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
10707                 /* one qp for PF, no queues for anything else */
10708                 queues_left = 0;
10709                 pf->alloc_rss_size = pf->num_lan_qps = 1;
10710
10711                 /* make sure all the fancies are disabled */
10712                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10713                                I40E_FLAG_IWARP_ENABLED  |
10714                                I40E_FLAG_FD_SB_ENABLED  |
10715                                I40E_FLAG_FD_ATR_ENABLED |
10716                                I40E_FLAG_DCB_CAPABLE    |
10717                                I40E_FLAG_DCB_ENABLED    |
10718                                I40E_FLAG_SRIOV_ENABLED  |
10719                                I40E_FLAG_VMDQ_ENABLED);
10720         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
10721                                   I40E_FLAG_FD_SB_ENABLED |
10722                                   I40E_FLAG_FD_ATR_ENABLED |
10723                                   I40E_FLAG_DCB_CAPABLE))) {
10724                 /* one qp for PF */
10725                 pf->alloc_rss_size = pf->num_lan_qps = 1;
10726                 queues_left -= pf->num_lan_qps;
10727
10728                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10729                                I40E_FLAG_IWARP_ENABLED  |
10730                                I40E_FLAG_FD_SB_ENABLED  |
10731                                I40E_FLAG_FD_ATR_ENABLED |
10732                                I40E_FLAG_DCB_ENABLED    |
10733                                I40E_FLAG_VMDQ_ENABLED);
10734         } else {
10735                 /* Not enough queues for all TCs */
10736                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
10737                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
10738                         pf->flags &= ~(I40E_FLAG_DCB_CAPABLE |
10739                                         I40E_FLAG_DCB_ENABLED);
10740                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
10741                 }
10742                 pf->num_lan_qps = max_t(int, pf->rss_size_max,
10743                                         num_online_cpus());
10744                 pf->num_lan_qps = min_t(int, pf->num_lan_qps,
10745                                         pf->hw.func_caps.num_tx_qp);
10746
10747                 queues_left -= pf->num_lan_qps;
10748         }
10749
10750         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10751                 if (queues_left > 1) {
10752                         queues_left -= 1; /* save 1 queue for FD */
10753                 } else {
10754                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
10755                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
10756                 }
10757         }
10758
10759         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10760             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
10761                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
10762                                         (queues_left / pf->num_vf_qps));
10763                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
10764         }
10765
10766         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
10767             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
10768                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
10769                                           (queues_left / pf->num_vmdq_qps));
10770                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
10771         }
10772
10773         pf->queues_left = queues_left;
10774         dev_dbg(&pf->pdev->dev,
10775                 "qs_avail=%d FD SB=%d lan_qs=%d lan_tc0=%d vf=%d*%d vmdq=%d*%d, remaining=%d\n",
10776                 pf->hw.func_caps.num_tx_qp,
10777                 !!(pf->flags & I40E_FLAG_FD_SB_ENABLED),
10778                 pf->num_lan_qps, pf->alloc_rss_size, pf->num_req_vfs,
10779                 pf->num_vf_qps, pf->num_vmdq_vsis, pf->num_vmdq_qps,
10780                 queues_left);
10781 }
10782
10783 /**
10784  * i40e_setup_pf_filter_control - Setup PF static filter control
10785  * @pf: PF to be setup
10786  *
10787  * i40e_setup_pf_filter_control sets up a PF's initial filter control
10788  * settings. If PE/FCoE are enabled then it will also set the per PF
10789  * based filter sizes required for them. It also enables Flow director,
10790  * ethertype and macvlan type filter settings for the pf.
10791  *
10792  * Returns 0 on success, negative on failure
10793  **/
10794 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
10795 {
10796         struct i40e_filter_control_settings *settings = &pf->filter_settings;
10797
10798         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
10799
10800         /* Flow Director is enabled */
10801         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
10802                 settings->enable_fdir = true;
10803
10804         /* Ethtype and MACVLAN filters enabled for PF */
10805         settings->enable_ethtype = true;
10806         settings->enable_macvlan = true;
10807
10808         if (i40e_set_filter_control(&pf->hw, settings))
10809                 return -ENOENT;
10810
10811         return 0;
10812 }
10813
10814 #define INFO_STRING_LEN 255
10815 #define REMAIN(__x) (INFO_STRING_LEN - (__x))
10816 static void i40e_print_features(struct i40e_pf *pf)
10817 {
10818         struct i40e_hw *hw = &pf->hw;
10819         char *buf;
10820         int i;
10821
10822         buf = kmalloc(INFO_STRING_LEN, GFP_KERNEL);
10823         if (!buf)
10824                 return;
10825
10826         i = snprintf(buf, INFO_STRING_LEN, "Features: PF-id[%d]", hw->pf_id);
10827 #ifdef CONFIG_PCI_IOV
10828         i += snprintf(&buf[i], REMAIN(i), " VFs: %d", pf->num_req_vfs);
10829 #endif
10830         i += snprintf(&buf[i], REMAIN(i), " VSIs: %d QP: %d",
10831                       pf->hw.func_caps.num_vsis,
10832                       pf->vsi[pf->lan_vsi]->num_queue_pairs);
10833         if (pf->flags & I40E_FLAG_RSS_ENABLED)
10834                 i += snprintf(&buf[i], REMAIN(i), " RSS");
10835         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
10836                 i += snprintf(&buf[i], REMAIN(i), " FD_ATR");
10837         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10838                 i += snprintf(&buf[i], REMAIN(i), " FD_SB");
10839                 i += snprintf(&buf[i], REMAIN(i), " NTUPLE");
10840         }
10841         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
10842                 i += snprintf(&buf[i], REMAIN(i), " DCB");
10843         i += snprintf(&buf[i], REMAIN(i), " VxLAN");
10844         i += snprintf(&buf[i], REMAIN(i), " Geneve");
10845         if (pf->flags & I40E_FLAG_PTP)
10846                 i += snprintf(&buf[i], REMAIN(i), " PTP");
10847         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
10848                 i += snprintf(&buf[i], REMAIN(i), " VEB");
10849         else
10850                 i += snprintf(&buf[i], REMAIN(i), " VEPA");
10851
10852         dev_info(&pf->pdev->dev, "%s\n", buf);
10853         kfree(buf);
10854         WARN_ON(i > INFO_STRING_LEN);
10855 }
10856
10857 /**
10858  * i40e_get_platform_mac_addr - get platform-specific MAC address
10859  * @pdev: PCI device information struct
10860  * @pf: board private structure
10861  *
10862  * Look up the MAC address for the device. First we'll try
10863  * eth_platform_get_mac_address, which will check Open Firmware, or arch
10864  * specific fallback. Otherwise, we'll default to the stored value in
10865  * firmware.
10866  **/
10867 static void i40e_get_platform_mac_addr(struct pci_dev *pdev, struct i40e_pf *pf)
10868 {
10869         if (eth_platform_get_mac_address(&pdev->dev, pf->hw.mac.addr))
10870                 i40e_get_mac_addr(&pf->hw, pf->hw.mac.addr);
10871 }
10872
10873 /**
10874  * i40e_probe - Device initialization routine
10875  * @pdev: PCI device information struct
10876  * @ent: entry in i40e_pci_tbl
10877  *
10878  * i40e_probe initializes a PF identified by a pci_dev structure.
10879  * The OS initialization, configuring of the PF private structure,
10880  * and a hardware reset occur.
10881  *
10882  * Returns 0 on success, negative on failure
10883  **/
10884 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
10885 {
10886         struct i40e_aq_get_phy_abilities_resp abilities;
10887         struct i40e_pf *pf;
10888         struct i40e_hw *hw;
10889         static u16 pfs_found;
10890         u16 wol_nvm_bits;
10891         u16 link_status;
10892         int err;
10893         u32 val;
10894         u32 i;
10895         u8 set_fc_aq_fail;
10896
10897         err = pci_enable_device_mem(pdev);
10898         if (err)
10899                 return err;
10900
10901         /* set up for high or low dma */
10902         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
10903         if (err) {
10904                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
10905                 if (err) {
10906                         dev_err(&pdev->dev,
10907                                 "DMA configuration failed: 0x%x\n", err);
10908                         goto err_dma;
10909                 }
10910         }
10911
10912         /* set up pci connections */
10913         err = pci_request_mem_regions(pdev, i40e_driver_name);
10914         if (err) {
10915                 dev_info(&pdev->dev,
10916                          "pci_request_selected_regions failed %d\n", err);
10917                 goto err_pci_reg;
10918         }
10919
10920         pci_enable_pcie_error_reporting(pdev);
10921         pci_set_master(pdev);
10922
10923         /* Now that we have a PCI connection, we need to do the
10924          * low level device setup.  This is primarily setting up
10925          * the Admin Queue structures and then querying for the
10926          * device's current profile information.
10927          */
10928         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
10929         if (!pf) {
10930                 err = -ENOMEM;
10931                 goto err_pf_alloc;
10932         }
10933         pf->next_vsi = 0;
10934         pf->pdev = pdev;
10935         set_bit(__I40E_DOWN, &pf->state);
10936
10937         hw = &pf->hw;
10938         hw->back = pf;
10939
10940         pf->ioremap_len = min_t(int, pci_resource_len(pdev, 0),
10941                                 I40E_MAX_CSR_SPACE);
10942
10943         hw->hw_addr = ioremap(pci_resource_start(pdev, 0), pf->ioremap_len);
10944         if (!hw->hw_addr) {
10945                 err = -EIO;
10946                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
10947                          (unsigned int)pci_resource_start(pdev, 0),
10948                          pf->ioremap_len, err);
10949                 goto err_ioremap;
10950         }
10951         hw->vendor_id = pdev->vendor;
10952         hw->device_id = pdev->device;
10953         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
10954         hw->subsystem_vendor_id = pdev->subsystem_vendor;
10955         hw->subsystem_device_id = pdev->subsystem_device;
10956         hw->bus.device = PCI_SLOT(pdev->devfn);
10957         hw->bus.func = PCI_FUNC(pdev->devfn);
10958         hw->bus.bus_id = pdev->bus->number;
10959         pf->instance = pfs_found;
10960
10961         INIT_LIST_HEAD(&pf->l3_flex_pit_list);
10962         INIT_LIST_HEAD(&pf->l4_flex_pit_list);
10963
10964         /* set up the locks for the AQ, do this only once in probe
10965          * and destroy them only once in remove
10966          */
10967         mutex_init(&hw->aq.asq_mutex);
10968         mutex_init(&hw->aq.arq_mutex);
10969
10970         pf->msg_enable = netif_msg_init(debug,
10971                                         NETIF_MSG_DRV |
10972                                         NETIF_MSG_PROBE |
10973                                         NETIF_MSG_LINK);
10974         if (debug < -1)
10975                 pf->hw.debug_mask = debug;
10976
10977         /* do a special CORER for clearing PXE mode once at init */
10978         if (hw->revision_id == 0 &&
10979             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
10980                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
10981                 i40e_flush(hw);
10982                 msleep(200);
10983                 pf->corer_count++;
10984
10985                 i40e_clear_pxe_mode(hw);
10986         }
10987
10988         /* Reset here to make sure all is clean and to define PF 'n' */
10989         i40e_clear_hw(hw);
10990         err = i40e_pf_reset(hw);
10991         if (err) {
10992                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
10993                 goto err_pf_reset;
10994         }
10995         pf->pfr_count++;
10996
10997         hw->aq.num_arq_entries = I40E_AQ_LEN;
10998         hw->aq.num_asq_entries = I40E_AQ_LEN;
10999         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
11000         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
11001         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
11002
11003         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
11004                  "%s-%s:misc",
11005                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
11006
11007         err = i40e_init_shared_code(hw);
11008         if (err) {
11009                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
11010                          err);
11011                 goto err_pf_reset;
11012         }
11013
11014         /* set up a default setting for link flow control */
11015         pf->hw.fc.requested_mode = I40E_FC_NONE;
11016
11017         err = i40e_init_adminq(hw);
11018         if (err) {
11019                 if (err == I40E_ERR_FIRMWARE_API_VERSION)
11020                         dev_info(&pdev->dev,
11021                                  "The driver for the device stopped because the NVM image is newer than expected. You must install the most recent version of the network driver.\n");
11022                 else
11023                         dev_info(&pdev->dev,
11024                                  "The driver for the device stopped because the device firmware failed to init. Try updating your NVM image.\n");
11025
11026                 goto err_pf_reset;
11027         }
11028
11029         /* provide nvm, fw, api versions */
11030         dev_info(&pdev->dev, "fw %d.%d.%05d api %d.%d nvm %s\n",
11031                  hw->aq.fw_maj_ver, hw->aq.fw_min_ver, hw->aq.fw_build,
11032                  hw->aq.api_maj_ver, hw->aq.api_min_ver,
11033                  i40e_nvm_version_str(hw));
11034
11035         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
11036             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
11037                 dev_info(&pdev->dev,
11038                          "The driver for the device detected a newer version of the NVM image than expected. Please install the most recent version of the network driver.\n");
11039         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
11040                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
11041                 dev_info(&pdev->dev,
11042                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
11043
11044         i40e_verify_eeprom(pf);
11045
11046         /* Rev 0 hardware was never productized */
11047         if (hw->revision_id < 1)
11048                 dev_warn(&pdev->dev, "This device is a pre-production adapter/LOM. Please be aware there may be issues with your hardware. If you are experiencing problems please contact your Intel or hardware representative who provided you with this hardware.\n");
11049
11050         i40e_clear_pxe_mode(hw);
11051         err = i40e_get_capabilities(pf);
11052         if (err)
11053                 goto err_adminq_setup;
11054
11055         err = i40e_sw_init(pf);
11056         if (err) {
11057                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
11058                 goto err_sw_init;
11059         }
11060
11061         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
11062                                 hw->func_caps.num_rx_qp, 0, 0);
11063         if (err) {
11064                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
11065                 goto err_init_lan_hmc;
11066         }
11067
11068         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
11069         if (err) {
11070                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
11071                 err = -ENOENT;
11072                 goto err_configure_lan_hmc;
11073         }
11074
11075         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
11076          * Ignore error return codes because if it was already disabled via
11077          * hardware settings this will fail
11078          */
11079         if (pf->flags & I40E_FLAG_STOP_FW_LLDP) {
11080                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
11081                 i40e_aq_stop_lldp(hw, true, NULL);
11082         }
11083
11084         /* allow a platform config to override the HW addr */
11085         i40e_get_platform_mac_addr(pdev, pf);
11086
11087         if (!is_valid_ether_addr(hw->mac.addr)) {
11088                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
11089                 err = -EIO;
11090                 goto err_mac_addr;
11091         }
11092         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
11093         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
11094         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
11095         if (is_valid_ether_addr(hw->mac.port_addr))
11096                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
11097
11098         pci_set_drvdata(pdev, pf);
11099         pci_save_state(pdev);
11100 #ifdef CONFIG_I40E_DCB
11101         err = i40e_init_pf_dcb(pf);
11102         if (err) {
11103                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
11104                 pf->flags &= ~(I40E_FLAG_DCB_CAPABLE | I40E_FLAG_DCB_ENABLED);
11105                 /* Continue without DCB enabled */
11106         }
11107 #endif /* CONFIG_I40E_DCB */
11108
11109         /* set up periodic task facility */
11110         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
11111         pf->service_timer_period = HZ;
11112
11113         INIT_WORK(&pf->service_task, i40e_service_task);
11114         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
11115
11116         /* NVM bit on means WoL disabled for the port */
11117         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
11118         if (BIT (hw->port) & wol_nvm_bits || hw->partition_id != 1)
11119                 pf->wol_en = false;
11120         else
11121                 pf->wol_en = true;
11122         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
11123
11124         /* set up the main switch operations */
11125         i40e_determine_queue_usage(pf);
11126         err = i40e_init_interrupt_scheme(pf);
11127         if (err)
11128                 goto err_switch_setup;
11129
11130         /* The number of VSIs reported by the FW is the minimum guaranteed
11131          * to us; HW supports far more and we share the remaining pool with
11132          * the other PFs. We allocate space for more than the guarantee with
11133          * the understanding that we might not get them all later.
11134          */
11135         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
11136                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
11137         else
11138                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
11139
11140         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
11141         pf->vsi = kcalloc(pf->num_alloc_vsi, sizeof(struct i40e_vsi *),
11142                           GFP_KERNEL);
11143         if (!pf->vsi) {
11144                 err = -ENOMEM;
11145                 goto err_switch_setup;
11146         }
11147
11148 #ifdef CONFIG_PCI_IOV
11149         /* prep for VF support */
11150         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
11151             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
11152             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
11153                 if (pci_num_vf(pdev))
11154                         pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
11155         }
11156 #endif
11157         err = i40e_setup_pf_switch(pf, false);
11158         if (err) {
11159                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
11160                 goto err_vsis;
11161         }
11162
11163         /* Make sure flow control is set according to current settings */
11164         err = i40e_set_fc(hw, &set_fc_aq_fail, true);
11165         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_GET)
11166                 dev_dbg(&pf->pdev->dev,
11167                         "Set fc with err %s aq_err %s on get_phy_cap\n",
11168                         i40e_stat_str(hw, err),
11169                         i40e_aq_str(hw, hw->aq.asq_last_status));
11170         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_SET)
11171                 dev_dbg(&pf->pdev->dev,
11172                         "Set fc with err %s aq_err %s on set_phy_config\n",
11173                         i40e_stat_str(hw, err),
11174                         i40e_aq_str(hw, hw->aq.asq_last_status));
11175         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_UPDATE)
11176                 dev_dbg(&pf->pdev->dev,
11177                         "Set fc with err %s aq_err %s on get_link_info\n",
11178                         i40e_stat_str(hw, err),
11179                         i40e_aq_str(hw, hw->aq.asq_last_status));
11180
11181         /* if FDIR VSI was set up, start it now */
11182         for (i = 0; i < pf->num_alloc_vsi; i++) {
11183                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
11184                         i40e_vsi_open(pf->vsi[i]);
11185                         break;
11186                 }
11187         }
11188
11189         /* The driver only wants link up/down and module qualification
11190          * reports from firmware.  Note the negative logic.
11191          */
11192         err = i40e_aq_set_phy_int_mask(&pf->hw,
11193                                        ~(I40E_AQ_EVENT_LINK_UPDOWN |
11194                                          I40E_AQ_EVENT_MEDIA_NA |
11195                                          I40E_AQ_EVENT_MODULE_QUAL_FAIL), NULL);
11196         if (err)
11197                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
11198                          i40e_stat_str(&pf->hw, err),
11199                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11200
11201         /* Reconfigure hardware for allowing smaller MSS in the case
11202          * of TSO, so that we avoid the MDD being fired and causing
11203          * a reset in the case of small MSS+TSO.
11204          */
11205         val = rd32(hw, I40E_REG_MSS);
11206         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
11207                 val &= ~I40E_REG_MSS_MIN_MASK;
11208                 val |= I40E_64BYTE_MSS;
11209                 wr32(hw, I40E_REG_MSS, val);
11210         }
11211
11212         if (pf->flags & I40E_FLAG_RESTART_AUTONEG) {
11213                 msleep(75);
11214                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
11215                 if (err)
11216                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
11217                                  i40e_stat_str(&pf->hw, err),
11218                                  i40e_aq_str(&pf->hw,
11219                                              pf->hw.aq.asq_last_status));
11220         }
11221         /* The main driver is (mostly) up and happy. We need to set this state
11222          * before setting up the misc vector or we get a race and the vector
11223          * ends up disabled forever.
11224          */
11225         clear_bit(__I40E_DOWN, &pf->state);
11226
11227         /* In case of MSIX we are going to setup the misc vector right here
11228          * to handle admin queue events etc. In case of legacy and MSI
11229          * the misc functionality and queue processing is combined in
11230          * the same vector and that gets setup at open.
11231          */
11232         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
11233                 err = i40e_setup_misc_vector(pf);
11234                 if (err) {
11235                         dev_info(&pdev->dev,
11236                                  "setup of misc vector failed: %d\n", err);
11237                         goto err_vsis;
11238                 }
11239         }
11240
11241 #ifdef CONFIG_PCI_IOV
11242         /* prep for VF support */
11243         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
11244             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
11245             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
11246                 /* disable link interrupts for VFs */
11247                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
11248                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
11249                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
11250                 i40e_flush(hw);
11251
11252                 if (pci_num_vf(pdev)) {
11253                         dev_info(&pdev->dev,
11254                                  "Active VFs found, allocating resources.\n");
11255                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
11256                         if (err)
11257                                 dev_info(&pdev->dev,
11258                                          "Error %d allocating resources for existing VFs\n",
11259                                          err);
11260                 }
11261         }
11262 #endif /* CONFIG_PCI_IOV */
11263
11264         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
11265                 pf->iwarp_base_vector = i40e_get_lump(pf, pf->irq_pile,
11266                                                       pf->num_iwarp_msix,
11267                                                       I40E_IWARP_IRQ_PILE_ID);
11268                 if (pf->iwarp_base_vector < 0) {
11269                         dev_info(&pdev->dev,
11270                                  "failed to get tracking for %d vectors for IWARP err=%d\n",
11271                                  pf->num_iwarp_msix, pf->iwarp_base_vector);
11272                         pf->flags &= ~I40E_FLAG_IWARP_ENABLED;
11273                 }
11274         }
11275
11276         i40e_dbg_pf_init(pf);
11277
11278         /* tell the firmware that we're starting */
11279         i40e_send_version(pf);
11280
11281         /* since everything's happy, start the service_task timer */
11282         mod_timer(&pf->service_timer,
11283                   round_jiffies(jiffies + pf->service_timer_period));
11284
11285         /* add this PF to client device list and launch a client service task */
11286         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
11287                 err = i40e_lan_add_device(pf);
11288                 if (err)
11289                         dev_info(&pdev->dev, "Failed to add PF to client API service list: %d\n",
11290                                  err);
11291         }
11292
11293 #define PCI_SPEED_SIZE 8
11294 #define PCI_WIDTH_SIZE 8
11295         /* Devices on the IOSF bus do not have this information
11296          * and will report PCI Gen 1 x 1 by default so don't bother
11297          * checking them.
11298          */
11299         if (!(pf->flags & I40E_FLAG_NO_PCI_LINK_CHECK)) {
11300                 char speed[PCI_SPEED_SIZE] = "Unknown";
11301                 char width[PCI_WIDTH_SIZE] = "Unknown";
11302
11303                 /* Get the negotiated link width and speed from PCI config
11304                  * space
11305                  */
11306                 pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA,
11307                                           &link_status);
11308
11309                 i40e_set_pci_config_data(hw, link_status);
11310
11311                 switch (hw->bus.speed) {
11312                 case i40e_bus_speed_8000:
11313                         strncpy(speed, "8.0", PCI_SPEED_SIZE); break;
11314                 case i40e_bus_speed_5000:
11315                         strncpy(speed, "5.0", PCI_SPEED_SIZE); break;
11316                 case i40e_bus_speed_2500:
11317                         strncpy(speed, "2.5", PCI_SPEED_SIZE); break;
11318                 default:
11319                         break;
11320                 }
11321                 switch (hw->bus.width) {
11322                 case i40e_bus_width_pcie_x8:
11323                         strncpy(width, "8", PCI_WIDTH_SIZE); break;
11324                 case i40e_bus_width_pcie_x4:
11325                         strncpy(width, "4", PCI_WIDTH_SIZE); break;
11326                 case i40e_bus_width_pcie_x2:
11327                         strncpy(width, "2", PCI_WIDTH_SIZE); break;
11328                 case i40e_bus_width_pcie_x1:
11329                         strncpy(width, "1", PCI_WIDTH_SIZE); break;
11330                 default:
11331                         break;
11332                 }
11333
11334                 dev_info(&pdev->dev, "PCI-Express: Speed %sGT/s Width x%s\n",
11335                          speed, width);
11336
11337                 if (hw->bus.width < i40e_bus_width_pcie_x8 ||
11338                     hw->bus.speed < i40e_bus_speed_8000) {
11339                         dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
11340                         dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
11341                 }
11342         }
11343
11344         /* get the requested speeds from the fw */
11345         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
11346         if (err)
11347                 dev_dbg(&pf->pdev->dev, "get requested speeds ret =  %s last_status =  %s\n",
11348                         i40e_stat_str(&pf->hw, err),
11349                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11350         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
11351
11352         /* get the supported phy types from the fw */
11353         err = i40e_aq_get_phy_capabilities(hw, false, true, &abilities, NULL);
11354         if (err)
11355                 dev_dbg(&pf->pdev->dev, "get supported phy types ret =  %s last_status =  %s\n",
11356                         i40e_stat_str(&pf->hw, err),
11357                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11358
11359         /* Add a filter to drop all Flow control frames from any VSI from being
11360          * transmitted. By doing so we stop a malicious VF from sending out
11361          * PAUSE or PFC frames and potentially controlling traffic for other
11362          * PF/VF VSIs.
11363          * The FW can still send Flow control frames if enabled.
11364          */
11365         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
11366                                                        pf->main_vsi_seid);
11367
11368         if ((pf->hw.device_id == I40E_DEV_ID_10G_BASE_T) ||
11369                 (pf->hw.device_id == I40E_DEV_ID_10G_BASE_T4))
11370                 pf->flags |= I40E_FLAG_PHY_CONTROLS_LEDS;
11371         if (pf->hw.device_id == I40E_DEV_ID_SFP_I_X722)
11372                 pf->flags |= I40E_FLAG_HAVE_CRT_RETIMER;
11373         /* print a string summarizing features */
11374         i40e_print_features(pf);
11375
11376         return 0;
11377
11378         /* Unwind what we've done if something failed in the setup */
11379 err_vsis:
11380         set_bit(__I40E_DOWN, &pf->state);
11381         i40e_clear_interrupt_scheme(pf);
11382         kfree(pf->vsi);
11383 err_switch_setup:
11384         i40e_reset_interrupt_capability(pf);
11385         del_timer_sync(&pf->service_timer);
11386 err_mac_addr:
11387 err_configure_lan_hmc:
11388         (void)i40e_shutdown_lan_hmc(hw);
11389 err_init_lan_hmc:
11390         kfree(pf->qp_pile);
11391 err_sw_init:
11392 err_adminq_setup:
11393 err_pf_reset:
11394         iounmap(hw->hw_addr);
11395 err_ioremap:
11396         kfree(pf);
11397 err_pf_alloc:
11398         pci_disable_pcie_error_reporting(pdev);
11399         pci_release_mem_regions(pdev);
11400 err_pci_reg:
11401 err_dma:
11402         pci_disable_device(pdev);
11403         return err;
11404 }
11405
11406 /**
11407  * i40e_remove - Device removal routine
11408  * @pdev: PCI device information struct
11409  *
11410  * i40e_remove is called by the PCI subsystem to alert the driver
11411  * that is should release a PCI device.  This could be caused by a
11412  * Hot-Plug event, or because the driver is going to be removed from
11413  * memory.
11414  **/
11415 static void i40e_remove(struct pci_dev *pdev)
11416 {
11417         struct i40e_pf *pf = pci_get_drvdata(pdev);
11418         struct i40e_hw *hw = &pf->hw;
11419         i40e_status ret_code;
11420         int i;
11421
11422         i40e_dbg_pf_exit(pf);
11423
11424         i40e_ptp_stop(pf);
11425
11426         /* Disable RSS in hw */
11427         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), 0);
11428         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), 0);
11429
11430         /* no more scheduling of any task */
11431         set_bit(__I40E_SUSPENDED, &pf->state);
11432         set_bit(__I40E_DOWN, &pf->state);
11433         if (pf->service_timer.data)
11434                 del_timer_sync(&pf->service_timer);
11435         if (pf->service_task.func)
11436                 cancel_work_sync(&pf->service_task);
11437
11438         /* Client close must be called explicitly here because the timer
11439          * has been stopped.
11440          */
11441         i40e_notify_client_of_netdev_close(pf->vsi[pf->lan_vsi], false);
11442
11443         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
11444                 i40e_free_vfs(pf);
11445                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
11446         }
11447
11448         i40e_fdir_teardown(pf);
11449
11450         /* If there is a switch structure or any orphans, remove them.
11451          * This will leave only the PF's VSI remaining.
11452          */
11453         for (i = 0; i < I40E_MAX_VEB; i++) {
11454                 if (!pf->veb[i])
11455                         continue;
11456
11457                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
11458                     pf->veb[i]->uplink_seid == 0)
11459                         i40e_switch_branch_release(pf->veb[i]);
11460         }
11461
11462         /* Now we can shutdown the PF's VSI, just before we kill
11463          * adminq and hmc.
11464          */
11465         if (pf->vsi[pf->lan_vsi])
11466                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
11467
11468         /* remove attached clients */
11469         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
11470                 ret_code = i40e_lan_del_device(pf);
11471                 if (ret_code)
11472                         dev_warn(&pdev->dev, "Failed to delete client device: %d\n",
11473                                  ret_code);
11474         }
11475
11476         /* shutdown and destroy the HMC */
11477         if (hw->hmc.hmc_obj) {
11478                 ret_code = i40e_shutdown_lan_hmc(hw);
11479                 if (ret_code)
11480                         dev_warn(&pdev->dev,
11481                                  "Failed to destroy the HMC resources: %d\n",
11482                                  ret_code);
11483         }
11484
11485         /* shutdown the adminq */
11486         i40e_shutdown_adminq(hw);
11487
11488         /* destroy the locks only once, here */
11489         mutex_destroy(&hw->aq.arq_mutex);
11490         mutex_destroy(&hw->aq.asq_mutex);
11491
11492         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
11493         i40e_clear_interrupt_scheme(pf);
11494         for (i = 0; i < pf->num_alloc_vsi; i++) {
11495                 if (pf->vsi[i]) {
11496                         i40e_vsi_clear_rings(pf->vsi[i]);
11497                         i40e_vsi_clear(pf->vsi[i]);
11498                         pf->vsi[i] = NULL;
11499                 }
11500         }
11501
11502         for (i = 0; i < I40E_MAX_VEB; i++) {
11503                 kfree(pf->veb[i]);
11504                 pf->veb[i] = NULL;
11505         }
11506
11507         kfree(pf->qp_pile);
11508         kfree(pf->vsi);
11509
11510         iounmap(hw->hw_addr);
11511         kfree(pf);
11512         pci_release_mem_regions(pdev);
11513
11514         pci_disable_pcie_error_reporting(pdev);
11515         pci_disable_device(pdev);
11516 }
11517
11518 /**
11519  * i40e_pci_error_detected - warning that something funky happened in PCI land
11520  * @pdev: PCI device information struct
11521  *
11522  * Called to warn that something happened and the error handling steps
11523  * are in progress.  Allows the driver to quiesce things, be ready for
11524  * remediation.
11525  **/
11526 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
11527                                                 enum pci_channel_state error)
11528 {
11529         struct i40e_pf *pf = pci_get_drvdata(pdev);
11530
11531         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
11532
11533         if (!pf) {
11534                 dev_info(&pdev->dev,
11535                          "Cannot recover - error happened during device probe\n");
11536                 return PCI_ERS_RESULT_DISCONNECT;
11537         }
11538
11539         /* shutdown all operations */
11540         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
11541                 rtnl_lock();
11542                 i40e_prep_for_reset(pf, true);
11543                 rtnl_unlock();
11544         }
11545
11546         /* Request a slot reset */
11547         return PCI_ERS_RESULT_NEED_RESET;
11548 }
11549
11550 /**
11551  * i40e_pci_error_slot_reset - a PCI slot reset just happened
11552  * @pdev: PCI device information struct
11553  *
11554  * Called to find if the driver can work with the device now that
11555  * the pci slot has been reset.  If a basic connection seems good
11556  * (registers are readable and have sane content) then return a
11557  * happy little PCI_ERS_RESULT_xxx.
11558  **/
11559 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
11560 {
11561         struct i40e_pf *pf = pci_get_drvdata(pdev);
11562         pci_ers_result_t result;
11563         int err;
11564         u32 reg;
11565
11566         dev_dbg(&pdev->dev, "%s\n", __func__);
11567         if (pci_enable_device_mem(pdev)) {
11568                 dev_info(&pdev->dev,
11569                          "Cannot re-enable PCI device after reset.\n");
11570                 result = PCI_ERS_RESULT_DISCONNECT;
11571         } else {
11572                 pci_set_master(pdev);
11573                 pci_restore_state(pdev);
11574                 pci_save_state(pdev);
11575                 pci_wake_from_d3(pdev, false);
11576
11577                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
11578                 if (reg == 0)
11579                         result = PCI_ERS_RESULT_RECOVERED;
11580                 else
11581                         result = PCI_ERS_RESULT_DISCONNECT;
11582         }
11583
11584         err = pci_cleanup_aer_uncorrect_error_status(pdev);
11585         if (err) {
11586                 dev_info(&pdev->dev,
11587                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
11588                          err);
11589                 /* non-fatal, continue */
11590         }
11591
11592         return result;
11593 }
11594
11595 /**
11596  * i40e_pci_error_resume - restart operations after PCI error recovery
11597  * @pdev: PCI device information struct
11598  *
11599  * Called to allow the driver to bring things back up after PCI error
11600  * and/or reset recovery has finished.
11601  **/
11602 static void i40e_pci_error_resume(struct pci_dev *pdev)
11603 {
11604         struct i40e_pf *pf = pci_get_drvdata(pdev);
11605
11606         dev_dbg(&pdev->dev, "%s\n", __func__);
11607         if (test_bit(__I40E_SUSPENDED, &pf->state))
11608                 return;
11609
11610         rtnl_lock();
11611         i40e_handle_reset_warning(pf, true);
11612         rtnl_unlock();
11613 }
11614
11615 /**
11616  * i40e_enable_mc_magic_wake - enable multicast magic packet wake up
11617  * using the mac_address_write admin q function
11618  * @pf: pointer to i40e_pf struct
11619  **/
11620 static void i40e_enable_mc_magic_wake(struct i40e_pf *pf)
11621 {
11622         struct i40e_hw *hw = &pf->hw;
11623         i40e_status ret;
11624         u8 mac_addr[6];
11625         u16 flags = 0;
11626
11627         /* Get current MAC address in case it's an LAA */
11628         if (pf->vsi[pf->lan_vsi] && pf->vsi[pf->lan_vsi]->netdev) {
11629                 ether_addr_copy(mac_addr,
11630                                 pf->vsi[pf->lan_vsi]->netdev->dev_addr);
11631         } else {
11632                 dev_err(&pf->pdev->dev,
11633                         "Failed to retrieve MAC address; using default\n");
11634                 ether_addr_copy(mac_addr, hw->mac.addr);
11635         }
11636
11637         /* The FW expects the mac address write cmd to first be called with
11638          * one of these flags before calling it again with the multicast
11639          * enable flags.
11640          */
11641         flags = I40E_AQC_WRITE_TYPE_LAA_WOL;
11642
11643         if (hw->func_caps.flex10_enable && hw->partition_id != 1)
11644                 flags = I40E_AQC_WRITE_TYPE_LAA_ONLY;
11645
11646         ret = i40e_aq_mac_address_write(hw, flags, mac_addr, NULL);
11647         if (ret) {
11648                 dev_err(&pf->pdev->dev,
11649                         "Failed to update MAC address registers; cannot enable Multicast Magic packet wake up");
11650                 return;
11651         }
11652
11653         flags = I40E_AQC_MC_MAG_EN
11654                         | I40E_AQC_WOL_PRESERVE_ON_PFR
11655                         | I40E_AQC_WRITE_TYPE_UPDATE_MC_MAG;
11656         ret = i40e_aq_mac_address_write(hw, flags, mac_addr, NULL);
11657         if (ret)
11658                 dev_err(&pf->pdev->dev,
11659                         "Failed to enable Multicast Magic Packet wake up\n");
11660 }
11661
11662 /**
11663  * i40e_shutdown - PCI callback for shutting down
11664  * @pdev: PCI device information struct
11665  **/
11666 static void i40e_shutdown(struct pci_dev *pdev)
11667 {
11668         struct i40e_pf *pf = pci_get_drvdata(pdev);
11669         struct i40e_hw *hw = &pf->hw;
11670
11671         set_bit(__I40E_SUSPENDED, &pf->state);
11672         set_bit(__I40E_DOWN, &pf->state);
11673         rtnl_lock();
11674         i40e_prep_for_reset(pf, true);
11675         rtnl_unlock();
11676
11677         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11678         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11679
11680         del_timer_sync(&pf->service_timer);
11681         cancel_work_sync(&pf->service_task);
11682         i40e_fdir_teardown(pf);
11683
11684         /* Client close must be called explicitly here because the timer
11685          * has been stopped.
11686          */
11687         i40e_notify_client_of_netdev_close(pf->vsi[pf->lan_vsi], false);
11688
11689         if (pf->wol_en && (pf->flags & I40E_FLAG_WOL_MC_MAGIC_PKT_WAKE))
11690                 i40e_enable_mc_magic_wake(pf);
11691
11692         rtnl_lock();
11693         i40e_prep_for_reset(pf, true);
11694         rtnl_unlock();
11695
11696         wr32(hw, I40E_PFPM_APM,
11697              (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11698         wr32(hw, I40E_PFPM_WUFC,
11699              (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11700
11701         i40e_clear_interrupt_scheme(pf);
11702
11703         if (system_state == SYSTEM_POWER_OFF) {
11704                 pci_wake_from_d3(pdev, pf->wol_en);
11705                 pci_set_power_state(pdev, PCI_D3hot);
11706         }
11707 }
11708
11709 #ifdef CONFIG_PM
11710 /**
11711  * i40e_suspend - PCI callback for moving to D3
11712  * @pdev: PCI device information struct
11713  **/
11714 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
11715 {
11716         struct i40e_pf *pf = pci_get_drvdata(pdev);
11717         struct i40e_hw *hw = &pf->hw;
11718         int retval = 0;
11719
11720         set_bit(__I40E_SUSPENDED, &pf->state);
11721         set_bit(__I40E_DOWN, &pf->state);
11722
11723         if (pf->wol_en && (pf->flags & I40E_FLAG_WOL_MC_MAGIC_PKT_WAKE))
11724                 i40e_enable_mc_magic_wake(pf);
11725
11726         rtnl_lock();
11727         i40e_prep_for_reset(pf, true);
11728         rtnl_unlock();
11729
11730         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11731         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11732
11733         i40e_stop_misc_vector(pf);
11734
11735         retval = pci_save_state(pdev);
11736         if (retval)
11737                 return retval;
11738
11739         pci_wake_from_d3(pdev, pf->wol_en);
11740         pci_set_power_state(pdev, PCI_D3hot);
11741
11742         return retval;
11743 }
11744
11745 /**
11746  * i40e_resume - PCI callback for waking up from D3
11747  * @pdev: PCI device information struct
11748  **/
11749 static int i40e_resume(struct pci_dev *pdev)
11750 {
11751         struct i40e_pf *pf = pci_get_drvdata(pdev);
11752         u32 err;
11753
11754         pci_set_power_state(pdev, PCI_D0);
11755         pci_restore_state(pdev);
11756         /* pci_restore_state() clears dev->state_saves, so
11757          * call pci_save_state() again to restore it.
11758          */
11759         pci_save_state(pdev);
11760
11761         err = pci_enable_device_mem(pdev);
11762         if (err) {
11763                 dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n");
11764                 return err;
11765         }
11766         pci_set_master(pdev);
11767
11768         /* no wakeup events while running */
11769         pci_wake_from_d3(pdev, false);
11770
11771         /* handling the reset will rebuild the device state */
11772         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
11773                 clear_bit(__I40E_DOWN, &pf->state);
11774                 rtnl_lock();
11775                 i40e_reset_and_rebuild(pf, false, true);
11776                 rtnl_unlock();
11777         }
11778
11779         return 0;
11780 }
11781
11782 #endif
11783 static const struct pci_error_handlers i40e_err_handler = {
11784         .error_detected = i40e_pci_error_detected,
11785         .slot_reset = i40e_pci_error_slot_reset,
11786         .resume = i40e_pci_error_resume,
11787 };
11788
11789 static struct pci_driver i40e_driver = {
11790         .name     = i40e_driver_name,
11791         .id_table = i40e_pci_tbl,
11792         .probe    = i40e_probe,
11793         .remove   = i40e_remove,
11794 #ifdef CONFIG_PM
11795         .suspend  = i40e_suspend,
11796         .resume   = i40e_resume,
11797 #endif
11798         .shutdown = i40e_shutdown,
11799         .err_handler = &i40e_err_handler,
11800         .sriov_configure = i40e_pci_sriov_configure,
11801 };
11802
11803 /**
11804  * i40e_init_module - Driver registration routine
11805  *
11806  * i40e_init_module is the first routine called when the driver is
11807  * loaded. All it does is register with the PCI subsystem.
11808  **/
11809 static int __init i40e_init_module(void)
11810 {
11811         pr_info("%s: %s - version %s\n", i40e_driver_name,
11812                 i40e_driver_string, i40e_driver_version_str);
11813         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
11814
11815         /* we will see if single thread per module is enough for now,
11816          * it can't be any worse than using the system workqueue which
11817          * was already single threaded
11818          */
11819         i40e_wq = alloc_workqueue("%s", WQ_UNBOUND | WQ_MEM_RECLAIM, 1,
11820                                   i40e_driver_name);
11821         if (!i40e_wq) {
11822                 pr_err("%s: Failed to create workqueue\n", i40e_driver_name);
11823                 return -ENOMEM;
11824         }
11825
11826         i40e_dbg_init();
11827         return pci_register_driver(&i40e_driver);
11828 }
11829 module_init(i40e_init_module);
11830
11831 /**
11832  * i40e_exit_module - Driver exit cleanup routine
11833  *
11834  * i40e_exit_module is called just before the driver is removed
11835  * from memory.
11836  **/
11837 static void __exit i40e_exit_module(void)
11838 {
11839         pci_unregister_driver(&i40e_driver);
11840         destroy_workqueue(i40e_wq);
11841         i40e_dbg_exit();
11842 }
11843 module_exit(i40e_exit_module);