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

   1 /*******************************************************************************
   2  *
   3  * Intel Ethernet Controller XL710 Family Linux Driver
   4  * Copyright(c) 2013 - 2015 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 /* Local includes */
  28 #include "i40e.h"
  29 #include "i40e_diag.h"
  30 #ifdef CONFIG_I40E_VXLAN
  31 #include <net/vxlan.h>
  32 #endif
  33
  34 const char i40e_driver_name[] = "i40e";
  35 static const char i40e_driver_string[] =
  36                         "Intel(R) Ethernet Connection XL710 Network Driver";
  37
  38 #define DRV_KERN "-k"
  39
  40 #define DRV_VERSION_MAJOR 1
  41 #define DRV_VERSION_MINOR 4
  42 #define DRV_VERSION_BUILD 7
  43 #define DRV_VERSION __stringify(DRV_VERSION_MAJOR) "." \
  44              __stringify(DRV_VERSION_MINOR) "." \
  45              __stringify(DRV_VERSION_BUILD)    DRV_KERN
  46 const char i40e_driver_version_str[] = DRV_VERSION;
  47 static const char i40e_copyright[] = "Copyright (c) 2013 - 2014 Intel Corporation.";
  48
  49 /* a bit of forward declarations */
  50 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi);
  51 static void i40e_handle_reset_warning(struct i40e_pf *pf);
  52 static int i40e_add_vsi(struct i40e_vsi *vsi);
  53 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi);
  54 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit);
  55 static int i40e_setup_misc_vector(struct i40e_pf *pf);
  56 static void i40e_determine_queue_usage(struct i40e_pf *pf);
  57 static int i40e_setup_pf_filter_control(struct i40e_pf *pf);
  58 static void i40e_fill_rss_lut(struct i40e_pf *pf, u8 *lut,
  59                               u16 rss_table_size, u16 rss_size);
  60 static void i40e_fdir_sb_setup(struct i40e_pf *pf);
  61 static int i40e_veb_get_bw_info(struct i40e_veb *veb);
  62
  63 /* i40e_pci_tbl - PCI Device ID Table
  64  *
  65  * Last entry must be all 0s
  66  *
  67  * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
  68  *   Class, Class Mask, private data (not used) }
  69  */
  70 static const struct pci_device_id i40e_pci_tbl[] = {
  71         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_XL710), 0},
  72         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QEMU), 0},
  73         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_A), 0},
  74         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_B), 0},
  75         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_C), 0},
  76         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_A), 0},
  77         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_B), 0},
  78         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_C), 0},
  79         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T), 0},
  80         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T4), 0},
  81         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  82         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_X722), 0},
  83         {PCI_VDEVICE(INTEL, I40E_DEV_ID_1G_BASE_T_X722), 0},
  84         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T_X722), 0},
  85         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  86         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2_A), 0},
  87         /* required last entry */
  88         {0, }
  89 };
  90 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
  91
  92 #define I40E_MAX_VF_COUNT 128
  93 static int debug = -1;
  94 module_param(debug, int, 0);
  95 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
  96
  97 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
  98 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
  99 MODULE_LICENSE("GPL");
 100 MODULE_VERSION(DRV_VERSION);
 101
 102 /**
 103  * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
 104  * @hw:   pointer to the HW structure
 105  * @mem:  ptr to mem struct to fill out
 106  * @size: size of memory requested
 107  * @alignment: what to align the allocation to
 108  **/
 109 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
 110                             u64 size, u32 alignment)
 111 {
 112         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 113
 114         mem->size = ALIGN(size, alignment);
 115         mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
 116                                       &mem->pa, GFP_KERNEL);
 117         if (!mem->va)
 118                 return -ENOMEM;
 119
 120         return 0;
 121 }
 122
 123 /**
 124  * i40e_free_dma_mem_d - OS specific memory free for shared code
 125  * @hw:   pointer to the HW structure
 126  * @mem:  ptr to mem struct to free
 127  **/
 128 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
 129 {
 130         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 131
 132         dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
 133         mem->va = NULL;
 134         mem->pa = 0;
 135         mem->size = 0;
 136
 137         return 0;
 138 }
 139
 140 /**
 141  * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 142  * @hw:   pointer to the HW structure
 143  * @mem:  ptr to mem struct to fill out
 144  * @size: size of memory requested
 145  **/
 146 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
 147                              u32 size)
 148 {
 149         mem->size = size;
 150         mem->va = kzalloc(size, GFP_KERNEL);
 151
 152         if (!mem->va)
 153                 return -ENOMEM;
 154
 155         return 0;
 156 }
 157
 158 /**
 159  * i40e_free_virt_mem_d - OS specific memory free for shared code
 160  * @hw:   pointer to the HW structure
 161  * @mem:  ptr to mem struct to free
 162  **/
 163 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
 164 {
 165         /* it's ok to kfree a NULL pointer */
 166         kfree(mem->va);
 167         mem->va = NULL;
 168         mem->size = 0;
 169
 170         return 0;
 171 }
 172
 173 /**
 174  * i40e_get_lump - find a lump of free generic resource
 175  * @pf: board private structure
 176  * @pile: the pile of resource to search
 177  * @needed: the number of items needed
 178  * @id: an owner id to stick on the items assigned
 179  *
 180  * Returns the base item index of the lump, or negative for error
 181  *
 182  * The search_hint trick and lack of advanced fit-finding only work
 183  * because we're highly likely to have all the same size lump requests.
 184  * Linear search time and any fragmentation should be minimal.
 185  **/
 186 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 187                          u16 needed, u16 id)
 188 {
 189         int ret = -ENOMEM;
 190         int i, j;
 191
 192         if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
 193                 dev_info(&pf->pdev->dev,
 194                          "param err: pile=%p needed=%d id=0x%04x\n",
 195                          pile, needed, id);
 196                 return -EINVAL;
 197         }
 198
 199         /* start the linear search with an imperfect hint */
 200         i = pile->search_hint;
 201         while (i < pile->num_entries) {
 202                 /* skip already allocated entries */
 203                 if (pile->list[i] & I40E_PILE_VALID_BIT) {
 204                         i++;
 205                         continue;
 206                 }
 207
 208                 /* do we have enough in this lump? */
 209                 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
 210                         if (pile->list[i+j] & I40E_PILE_VALID_BIT)
 211                                 break;
 212                 }
 213
 214                 if (j == needed) {
 215                         /* there was enough, so assign it to the requestor */
 216                         for (j = 0; j < needed; j++)
 217                                 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 218                         ret = i;
 219                         pile->search_hint = i + j;
 220                         break;
 221                 }
 222
 223                 /* not enough, so skip over it and continue looking */
 224                 i += j;
 225         }
 226
 227         return ret;
 228 }
 229
 230 /**
 231  * i40e_put_lump - return a lump of generic resource
 232  * @pile: the pile of resource to search
 233  * @index: the base item index
 234  * @id: the owner id of the items assigned
 235  *
 236  * Returns the count of items in the lump
 237  **/
 238 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
 239 {
 240         int valid_id = (id | I40E_PILE_VALID_BIT);
 241         int count = 0;
 242         int i;
 243
 244         if (!pile || index >= pile->num_entries)
 245                 return -EINVAL;
 246
 247         for (i = index;
 248              i < pile->num_entries && pile->list[i] == valid_id;
 249              i++) {
 250                 pile->list[i] = 0;
 251                 count++;
 252         }
 253
 254         if (count && index < pile->search_hint)
 255                 pile->search_hint = index;
 256
 257         return count;
 258 }
 259
 260 /**
 261  * i40e_find_vsi_from_id - searches for the vsi with the given id
 262  * @pf - the pf structure to search for the vsi
 263  * @id - id of the vsi it is searching for
 264  **/
 265 struct i40e_vsi *i40e_find_vsi_from_id(struct i40e_pf *pf, u16 id)
 266 {
 267         int i;
 268
 269         for (i = 0; i < pf->num_alloc_vsi; i++)
 270                 if (pf->vsi[i] && (pf->vsi[i]->id == id))
 271                         return pf->vsi[i];
 272
 273         return NULL;
 274 }
 275
 276 /**
 277  * i40e_service_event_schedule - Schedule the service task to wake up
 278  * @pf: board private structure
 279  *
 280  * If not already scheduled, this puts the task into the work queue
 281  **/
 282 static void i40e_service_event_schedule(struct i40e_pf *pf)
 283 {
 284         if (!test_bit(__I40E_DOWN, &pf->state) &&
 285             !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state) &&
 286             !test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
 287                 schedule_work(&pf->service_task);
 288 }
 289
 290 /**
 291  * i40e_tx_timeout - Respond to a Tx Hang
 292  * @netdev: network interface device structure
 293  *
 294  * If any port has noticed a Tx timeout, it is likely that the whole
 295  * device is munged, not just the one netdev port, so go for the full
 296  * reset.
 297  **/
 298 #ifdef I40E_FCOE
 299 void i40e_tx_timeout(struct net_device *netdev)
 300 #else
 301 static void i40e_tx_timeout(struct net_device *netdev)
 302 #endif
 303 {
 304         struct i40e_netdev_priv *np = netdev_priv(netdev);
 305         struct i40e_vsi *vsi = np->vsi;
 306         struct i40e_pf *pf = vsi->back;
 307         struct i40e_ring *tx_ring = NULL;
 308         unsigned int i, hung_queue = 0;
 309         u32 head, val;
 310
 311         pf->tx_timeout_count++;
 312
 313         /* find the stopped queue the same way the stack does */
 314         for (i = 0; i < netdev->num_tx_queues; i++) {
 315                 struct netdev_queue *q;
 316                 unsigned long trans_start;
 317
 318                 q = netdev_get_tx_queue(netdev, i);
 319                 trans_start = q->trans_start ? : netdev->trans_start;
 320                 if (netif_xmit_stopped(q) &&
 321                     time_after(jiffies,
 322                                (trans_start + netdev->watchdog_timeo))) {
 323                         hung_queue = i;
 324                         break;
 325                 }
 326         }
 327
 328         if (i == netdev->num_tx_queues) {
 329                 netdev_info(netdev, "tx_timeout: no netdev hung queue found\n");
 330         } else {
 331                 /* now that we have an index, find the tx_ring struct */
 332                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 333                         if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
 334                                 if (hung_queue ==
 335                                     vsi->tx_rings[i]->queue_index) {
 336                                         tx_ring = vsi->tx_rings[i];
 337                                         break;
 338                                 }
 339                         }
 340                 }
 341         }
 342
 343         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 344                 pf->tx_timeout_recovery_level = 1;  /* reset after some time */
 345         else if (time_before(jiffies,
 346                       (pf->tx_timeout_last_recovery + netdev->watchdog_timeo)))
 347                 return;   /* don't do any new action before the next timeout */
 348
 349         if (tx_ring) {
 350                 head = i40e_get_head(tx_ring);
 351                 /* Read interrupt register */
 352                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
 353                         val = rd32(&pf->hw,
 354                              I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
 355                                                 tx_ring->vsi->base_vector - 1));
 356                 else
 357                         val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
 358
 359                 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",
 360                             vsi->seid, hung_queue, tx_ring->next_to_clean,
 361                             head, tx_ring->next_to_use,
 362                             readl(tx_ring->tail), val);
 363         }
 364
 365         pf->tx_timeout_last_recovery = jiffies;
 366         netdev_info(netdev, "tx_timeout recovery level %d, hung_queue %d\n",
 367                     pf->tx_timeout_recovery_level, hung_queue);
 368
 369         switch (pf->tx_timeout_recovery_level) {
 370         case 1:
 371                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
 372                 break;
 373         case 2:
 374                 set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
 375                 break;
 376         case 3:
 377                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
 378                 break;
 379         default:
 380                 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
 381                 break;
 382         }
 383
 384         i40e_service_event_schedule(pf);
 385         pf->tx_timeout_recovery_level++;
 386 }
 387
 388 /**
 389  * i40e_release_rx_desc - Store the new tail and head values
 390  * @rx_ring: ring to bump
 391  * @val: new head index
 392  **/
 393 static inline void i40e_release_rx_desc(struct i40e_ring *rx_ring, u32 val)
 394 {
 395         rx_ring->next_to_use = val;
 396
 397         /* Force memory writes to complete before letting h/w
 398          * know there are new descriptors to fetch.  (Only
 399          * applicable for weak-ordered memory model archs,
 400          * such as IA-64).
 401          */
 402         wmb();
 403         writel(val, rx_ring->tail);
 404 }
 405
 406 /**
 407  * i40e_get_vsi_stats_struct - Get System Network Statistics
 408  * @vsi: the VSI we care about
 409  *
 410  * Returns the address of the device statistics structure.
 411  * The statistics are actually updated from the service task.
 412  **/
 413 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 414 {
 415         return &vsi->net_stats;
 416 }
 417
 418 /**
 419  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 420  * @netdev: network interface device structure
 421  *
 422  * Returns the address of the device statistics structure.
 423  * The statistics are actually updated from the service task.
 424  **/
 425 #ifdef I40E_FCOE
 426 struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 427                                              struct net_device *netdev,
 428                                              struct rtnl_link_stats64 *stats)
 429 #else
 430 static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 431                                              struct net_device *netdev,
 432                                              struct rtnl_link_stats64 *stats)
 433 #endif
 434 {
 435         struct i40e_netdev_priv *np = netdev_priv(netdev);
 436         struct i40e_ring *tx_ring, *rx_ring;
 437         struct i40e_vsi *vsi = np->vsi;
 438         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 439         int i;
 440
 441         if (test_bit(__I40E_DOWN, &vsi->state))
 442                 return stats;
 443
 444         if (!vsi->tx_rings)
 445                 return stats;
 446
 447         rcu_read_lock();
 448         for (i = 0; i < vsi->num_queue_pairs; i++) {
 449                 u64 bytes, packets;
 450                 unsigned int start;
 451
 452                 tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
 453                 if (!tx_ring)
 454                         continue;
 455
 456                 do {
 457                         start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
 458                         packets = tx_ring->stats.packets;
 459                         bytes   = tx_ring->stats.bytes;
 460                 } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
 461
 462                 stats->tx_packets += packets;
 463                 stats->tx_bytes   += bytes;
 464                 rx_ring = &tx_ring[1];
 465
 466                 do {
 467                         start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
 468                         packets = rx_ring->stats.packets;
 469                         bytes   = rx_ring->stats.bytes;
 470                 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
 471
 472                 stats->rx_packets += packets;
 473                 stats->rx_bytes   += bytes;
 474         }
 475         rcu_read_unlock();
 476
 477         /* following stats updated by i40e_watchdog_subtask() */
 478         stats->multicast        = vsi_stats->multicast;
 479         stats->tx_errors        = vsi_stats->tx_errors;
 480         stats->tx_dropped       = vsi_stats->tx_dropped;
 481         stats->rx_errors        = vsi_stats->rx_errors;
 482         stats->rx_dropped       = vsi_stats->rx_dropped;
 483         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 484         stats->rx_length_errors = vsi_stats->rx_length_errors;
 485
 486         return stats;
 487 }
 488
 489 /**
 490  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 491  * @vsi: the VSI to have its stats reset
 492  **/
 493 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 494 {
 495         struct rtnl_link_stats64 *ns;
 496         int i;
 497
 498         if (!vsi)
 499                 return;
 500
 501         ns = i40e_get_vsi_stats_struct(vsi);
 502         memset(ns, 0, sizeof(*ns));
 503         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 504         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 505         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 506         if (vsi->rx_rings && vsi->rx_rings[0]) {
 507                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 508                         memset(&vsi->rx_rings[i]->stats, 0,
 509                                sizeof(vsi->rx_rings[i]->stats));
 510                         memset(&vsi->rx_rings[i]->rx_stats, 0,
 511                                sizeof(vsi->rx_rings[i]->rx_stats));
 512                         memset(&vsi->tx_rings[i]->stats, 0,
 513                                sizeof(vsi->tx_rings[i]->stats));
 514                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 515                                sizeof(vsi->tx_rings[i]->tx_stats));
 516                 }
 517         }
 518         vsi->stat_offsets_loaded = false;
 519 }
 520
 521 /**
 522  * i40e_pf_reset_stats - Reset all of the stats for the given PF
 523  * @pf: the PF to be reset
 524  **/
 525 void i40e_pf_reset_stats(struct i40e_pf *pf)
 526 {
 527         int i;
 528
 529         memset(&pf->stats, 0, sizeof(pf->stats));
 530         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 531         pf->stat_offsets_loaded = false;
 532
 533         for (i = 0; i < I40E_MAX_VEB; i++) {
 534                 if (pf->veb[i]) {
 535                         memset(&pf->veb[i]->stats, 0,
 536                                sizeof(pf->veb[i]->stats));
 537                         memset(&pf->veb[i]->stats_offsets, 0,
 538                                sizeof(pf->veb[i]->stats_offsets));
 539                         pf->veb[i]->stat_offsets_loaded = false;
 540                 }
 541         }
 542 }
 543
 544 /**
 545  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 546  * @hw: ptr to the hardware info
 547  * @hireg: the high 32 bit reg to read
 548  * @loreg: the low 32 bit reg to read
 549  * @offset_loaded: has the initial offset been loaded yet
 550  * @offset: ptr to current offset value
 551  * @stat: ptr to the stat
 552  *
 553  * Since the device stats are not reset at PFReset, they likely will not
 554  * be zeroed when the driver starts.  We'll save the first values read
 555  * and use them as offsets to be subtracted from the raw values in order
 556  * to report stats that count from zero.  In the process, we also manage
 557  * the potential roll-over.
 558  **/
 559 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 560                                bool offset_loaded, u64 *offset, u64 *stat)
 561 {
 562         u64 new_data;
 563
 564         if (hw->device_id == I40E_DEV_ID_QEMU) {
 565                 new_data = rd32(hw, loreg);
 566                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 567         } else {
 568                 new_data = rd64(hw, loreg);
 569         }
 570         if (!offset_loaded)
 571                 *offset = new_data;
 572         if (likely(new_data >= *offset))
 573                 *stat = new_data - *offset;
 574         else
 575                 *stat = (new_data + BIT_ULL(48)) - *offset;
 576         *stat &= 0xFFFFFFFFFFFFULL;
 577 }
 578
 579 /**
 580  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 581  * @hw: ptr to the hardware info
 582  * @reg: the hw reg to read
 583  * @offset_loaded: has the initial offset been loaded yet
 584  * @offset: ptr to current offset value
 585  * @stat: ptr to the stat
 586  **/
 587 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 588                                bool offset_loaded, u64 *offset, u64 *stat)
 589 {
 590         u32 new_data;
 591
 592         new_data = rd32(hw, reg);
 593         if (!offset_loaded)
 594                 *offset = new_data;
 595         if (likely(new_data >= *offset))
 596                 *stat = (u32)(new_data - *offset);
 597         else
 598                 *stat = (u32)((new_data + BIT_ULL(32)) - *offset);
 599 }
 600
 601 /**
 602  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 603  * @vsi: the VSI to be updated
 604  **/
 605 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 606 {
 607         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 608         struct i40e_pf *pf = vsi->back;
 609         struct i40e_hw *hw = &pf->hw;
 610         struct i40e_eth_stats *oes;
 611         struct i40e_eth_stats *es;     /* device's eth stats */
 612
 613         es = &vsi->eth_stats;
 614         oes = &vsi->eth_stats_offsets;
 615
 616         /* Gather up the stats that the hw collects */
 617         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 618                            vsi->stat_offsets_loaded,
 619                            &oes->tx_errors, &es->tx_errors);
 620         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 621                            vsi->stat_offsets_loaded,
 622                            &oes->rx_discards, &es->rx_discards);
 623         i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
 624                            vsi->stat_offsets_loaded,
 625                            &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
 626         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 627                            vsi->stat_offsets_loaded,
 628                            &oes->tx_errors, &es->tx_errors);
 629
 630         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 631                            I40E_GLV_GORCL(stat_idx),
 632                            vsi->stat_offsets_loaded,
 633                            &oes->rx_bytes, &es->rx_bytes);
 634         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 635                            I40E_GLV_UPRCL(stat_idx),
 636                            vsi->stat_offsets_loaded,
 637                            &oes->rx_unicast, &es->rx_unicast);
 638         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 639                            I40E_GLV_MPRCL(stat_idx),
 640                            vsi->stat_offsets_loaded,
 641                            &oes->rx_multicast, &es->rx_multicast);
 642         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 643                            I40E_GLV_BPRCL(stat_idx),
 644                            vsi->stat_offsets_loaded,
 645                            &oes->rx_broadcast, &es->rx_broadcast);
 646
 647         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 648                            I40E_GLV_GOTCL(stat_idx),
 649                            vsi->stat_offsets_loaded,
 650                            &oes->tx_bytes, &es->tx_bytes);
 651         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 652                            I40E_GLV_UPTCL(stat_idx),
 653                            vsi->stat_offsets_loaded,
 654                            &oes->tx_unicast, &es->tx_unicast);
 655         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 656                            I40E_GLV_MPTCL(stat_idx),
 657                            vsi->stat_offsets_loaded,
 658                            &oes->tx_multicast, &es->tx_multicast);
 659         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 660                            I40E_GLV_BPTCL(stat_idx),
 661                            vsi->stat_offsets_loaded,
 662                            &oes->tx_broadcast, &es->tx_broadcast);
 663         vsi->stat_offsets_loaded = true;
 664 }
 665
 666 /**
 667  * i40e_update_veb_stats - Update Switch component statistics
 668  * @veb: the VEB being updated
 669  **/
 670 static void i40e_update_veb_stats(struct i40e_veb *veb)
 671 {
 672         struct i40e_pf *pf = veb->pf;
 673         struct i40e_hw *hw = &pf->hw;
 674         struct i40e_eth_stats *oes;
 675         struct i40e_eth_stats *es;     /* device's eth stats */
 676         struct i40e_veb_tc_stats *veb_oes;
 677         struct i40e_veb_tc_stats *veb_es;
 678         int i, idx = 0;
 679
 680         idx = veb->stats_idx;
 681         es = &veb->stats;
 682         oes = &veb->stats_offsets;
 683         veb_es = &veb->tc_stats;
 684         veb_oes = &veb->tc_stats_offsets;
 685
 686         /* Gather up the stats that the hw collects */
 687         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 688                            veb->stat_offsets_loaded,
 689                            &oes->tx_discards, &es->tx_discards);
 690         if (hw->revision_id > 0)
 691                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 692                                    veb->stat_offsets_loaded,
 693                                    &oes->rx_unknown_protocol,
 694                                    &es->rx_unknown_protocol);
 695         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 696                            veb->stat_offsets_loaded,
 697                            &oes->rx_bytes, &es->rx_bytes);
 698         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 699                            veb->stat_offsets_loaded,
 700                            &oes->rx_unicast, &es->rx_unicast);
 701         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 702                            veb->stat_offsets_loaded,
 703                            &oes->rx_multicast, &es->rx_multicast);
 704         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 705                            veb->stat_offsets_loaded,
 706                            &oes->rx_broadcast, &es->rx_broadcast);
 707
 708         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 709                            veb->stat_offsets_loaded,
 710                            &oes->tx_bytes, &es->tx_bytes);
 711         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 712                            veb->stat_offsets_loaded,
 713                            &oes->tx_unicast, &es->tx_unicast);
 714         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 715                            veb->stat_offsets_loaded,
 716                            &oes->tx_multicast, &es->tx_multicast);
 717         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 718                            veb->stat_offsets_loaded,
 719                            &oes->tx_broadcast, &es->tx_broadcast);
 720         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
 721                 i40e_stat_update48(hw, I40E_GLVEBTC_RPCH(i, idx),
 722                                    I40E_GLVEBTC_RPCL(i, idx),
 723                                    veb->stat_offsets_loaded,
 724                                    &veb_oes->tc_rx_packets[i],
 725                                    &veb_es->tc_rx_packets[i]);
 726                 i40e_stat_update48(hw, I40E_GLVEBTC_RBCH(i, idx),
 727                                    I40E_GLVEBTC_RBCL(i, idx),
 728                                    veb->stat_offsets_loaded,
 729                                    &veb_oes->tc_rx_bytes[i],
 730                                    &veb_es->tc_rx_bytes[i]);
 731                 i40e_stat_update48(hw, I40E_GLVEBTC_TPCH(i, idx),
 732                                    I40E_GLVEBTC_TPCL(i, idx),
 733                                    veb->stat_offsets_loaded,
 734                                    &veb_oes->tc_tx_packets[i],
 735                                    &veb_es->tc_tx_packets[i]);
 736                 i40e_stat_update48(hw, I40E_GLVEBTC_TBCH(i, idx),
 737                                    I40E_GLVEBTC_TBCL(i, idx),
 738                                    veb->stat_offsets_loaded,
 739                                    &veb_oes->tc_tx_bytes[i],
 740                                    &veb_es->tc_tx_bytes[i]);
 741         }
 742         veb->stat_offsets_loaded = true;
 743 }
 744
 745 #ifdef I40E_FCOE
 746 /**
 747  * i40e_update_fcoe_stats - Update FCoE-specific ethernet statistics counters.
 748  * @vsi: the VSI that is capable of doing FCoE
 749  **/
 750 static void i40e_update_fcoe_stats(struct i40e_vsi *vsi)
 751 {
 752         struct i40e_pf *pf = vsi->back;
 753         struct i40e_hw *hw = &pf->hw;
 754         struct i40e_fcoe_stats *ofs;
 755         struct i40e_fcoe_stats *fs;     /* device's eth stats */
 756         int idx;
 757
 758         if (vsi->type != I40E_VSI_FCOE)
 759                 return;
 760
 761         idx = (pf->pf_seid - I40E_BASE_PF_SEID) + I40E_FCOE_PF_STAT_OFFSET;
 762         fs = &vsi->fcoe_stats;
 763         ofs = &vsi->fcoe_stats_offsets;
 764
 765         i40e_stat_update32(hw, I40E_GL_FCOEPRC(idx),
 766                            vsi->fcoe_stat_offsets_loaded,
 767                            &ofs->rx_fcoe_packets, &fs->rx_fcoe_packets);
 768         i40e_stat_update48(hw, I40E_GL_FCOEDWRCH(idx), I40E_GL_FCOEDWRCL(idx),
 769                            vsi->fcoe_stat_offsets_loaded,
 770                            &ofs->rx_fcoe_dwords, &fs->rx_fcoe_dwords);
 771         i40e_stat_update32(hw, I40E_GL_FCOERPDC(idx),
 772                            vsi->fcoe_stat_offsets_loaded,
 773                            &ofs->rx_fcoe_dropped, &fs->rx_fcoe_dropped);
 774         i40e_stat_update32(hw, I40E_GL_FCOEPTC(idx),
 775                            vsi->fcoe_stat_offsets_loaded,
 776                            &ofs->tx_fcoe_packets, &fs->tx_fcoe_packets);
 777         i40e_stat_update48(hw, I40E_GL_FCOEDWTCH(idx), I40E_GL_FCOEDWTCL(idx),
 778                            vsi->fcoe_stat_offsets_loaded,
 779                            &ofs->tx_fcoe_dwords, &fs->tx_fcoe_dwords);
 780         i40e_stat_update32(hw, I40E_GL_FCOECRC(idx),
 781                            vsi->fcoe_stat_offsets_loaded,
 782                            &ofs->fcoe_bad_fccrc, &fs->fcoe_bad_fccrc);
 783         i40e_stat_update32(hw, I40E_GL_FCOELAST(idx),
 784                            vsi->fcoe_stat_offsets_loaded,
 785                            &ofs->fcoe_last_error, &fs->fcoe_last_error);
 786         i40e_stat_update32(hw, I40E_GL_FCOEDDPC(idx),
 787                            vsi->fcoe_stat_offsets_loaded,
 788                            &ofs->fcoe_ddp_count, &fs->fcoe_ddp_count);
 789
 790         vsi->fcoe_stat_offsets_loaded = true;
 791 }
 792
 793 #endif
 794 /**
 795  * i40e_update_vsi_stats - Update the vsi statistics counters.
 796  * @vsi: the VSI to be updated
 797  *
 798  * There are a few instances where we store the same stat in a
 799  * couple of different structs.  This is partly because we have
 800  * the netdev stats that need to be filled out, which is slightly
 801  * different from the "eth_stats" defined by the chip and used in
 802  * VF communications.  We sort it out here.
 803  **/
 804 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 805 {
 806         struct i40e_pf *pf = vsi->back;
 807         struct rtnl_link_stats64 *ons;
 808         struct rtnl_link_stats64 *ns;   /* netdev stats */
 809         struct i40e_eth_stats *oes;
 810         struct i40e_eth_stats *es;     /* device's eth stats */
 811         u32 tx_restart, tx_busy;
 812         struct i40e_ring *p;
 813         u32 rx_page, rx_buf;
 814         u64 bytes, packets;
 815         unsigned int start;
 816         u64 tx_linearize;
 817         u64 tx_force_wb;
 818         u64 rx_p, rx_b;
 819         u64 tx_p, tx_b;
 820         u16 q;
 821
 822         if (test_bit(__I40E_DOWN, &vsi->state) ||
 823             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 824                 return;
 825
 826         ns = i40e_get_vsi_stats_struct(vsi);
 827         ons = &vsi->net_stats_offsets;
 828         es = &vsi->eth_stats;
 829         oes = &vsi->eth_stats_offsets;
 830
 831         /* Gather up the netdev and vsi stats that the driver collects
 832          * on the fly during packet processing
 833          */
 834         rx_b = rx_p = 0;
 835         tx_b = tx_p = 0;
 836         tx_restart = tx_busy = tx_linearize = tx_force_wb = 0;
 837         rx_page = 0;
 838         rx_buf = 0;
 839         rcu_read_lock();
 840         for (q = 0; q < vsi->num_queue_pairs; q++) {
 841                 /* locate Tx ring */
 842                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 843
 844                 do {
 845                         start = u64_stats_fetch_begin_irq(&p->syncp);
 846                         packets = p->stats.packets;
 847                         bytes = p->stats.bytes;
 848                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 849                 tx_b += bytes;
 850                 tx_p += packets;
 851                 tx_restart += p->tx_stats.restart_queue;
 852                 tx_busy += p->tx_stats.tx_busy;
 853                 tx_linearize += p->tx_stats.tx_linearize;
 854                 tx_force_wb += p->tx_stats.tx_force_wb;
 855
 856                 /* Rx queue is part of the same block as Tx queue */
 857                 p = &p[1];
 858                 do {
 859                         start = u64_stats_fetch_begin_irq(&p->syncp);
 860                         packets = p->stats.packets;
 861                         bytes = p->stats.bytes;
 862                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 863                 rx_b += bytes;
 864                 rx_p += packets;
 865                 rx_buf += p->rx_stats.alloc_buff_failed;
 866                 rx_page += p->rx_stats.alloc_page_failed;
 867         }
 868         rcu_read_unlock();
 869         vsi->tx_restart = tx_restart;
 870         vsi->tx_busy = tx_busy;
 871         vsi->tx_linearize = tx_linearize;
 872         vsi->tx_force_wb = tx_force_wb;
 873         vsi->rx_page_failed = rx_page;
 874         vsi->rx_buf_failed = rx_buf;
 875
 876         ns->rx_packets = rx_p;
 877         ns->rx_bytes = rx_b;
 878         ns->tx_packets = tx_p;
 879         ns->tx_bytes = tx_b;
 880
 881         /* update netdev stats from eth stats */
 882         i40e_update_eth_stats(vsi);
 883         ons->tx_errors = oes->tx_errors;
 884         ns->tx_errors = es->tx_errors;
 885         ons->multicast = oes->rx_multicast;
 886         ns->multicast = es->rx_multicast;
 887         ons->rx_dropped = oes->rx_discards;
 888         ns->rx_dropped = es->rx_discards;
 889         ons->tx_dropped = oes->tx_discards;
 890         ns->tx_dropped = es->tx_discards;
 891
 892         /* pull in a couple PF stats if this is the main vsi */
 893         if (vsi == pf->vsi[pf->lan_vsi]) {
 894                 ns->rx_crc_errors = pf->stats.crc_errors;
 895                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 896                 ns->rx_length_errors = pf->stats.rx_length_errors;
 897         }
 898 }
 899
 900 /**
 901  * i40e_update_pf_stats - Update the PF statistics counters.
 902  * @pf: the PF to be updated
 903  **/
 904 static void i40e_update_pf_stats(struct i40e_pf *pf)
 905 {
 906         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 907         struct i40e_hw_port_stats *nsd = &pf->stats;
 908         struct i40e_hw *hw = &pf->hw;
 909         u32 val;
 910         int i;
 911
 912         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 913                            I40E_GLPRT_GORCL(hw->port),
 914                            pf->stat_offsets_loaded,
 915                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 916         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 917                            I40E_GLPRT_GOTCL(hw->port),
 918                            pf->stat_offsets_loaded,
 919                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 920         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 921                            pf->stat_offsets_loaded,
 922                            &osd->eth.rx_discards,
 923                            &nsd->eth.rx_discards);
 924         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 925                            I40E_GLPRT_UPRCL(hw->port),
 926                            pf->stat_offsets_loaded,
 927                            &osd->eth.rx_unicast,
 928                            &nsd->eth.rx_unicast);
 929         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 930                            I40E_GLPRT_MPRCL(hw->port),
 931                            pf->stat_offsets_loaded,
 932                            &osd->eth.rx_multicast,
 933                            &nsd->eth.rx_multicast);
 934         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
 935                            I40E_GLPRT_BPRCL(hw->port),
 936                            pf->stat_offsets_loaded,
 937                            &osd->eth.rx_broadcast,
 938                            &nsd->eth.rx_broadcast);
 939         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
 940                            I40E_GLPRT_UPTCL(hw->port),
 941                            pf->stat_offsets_loaded,
 942                            &osd->eth.tx_unicast,
 943                            &nsd->eth.tx_unicast);
 944         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
 945                            I40E_GLPRT_MPTCL(hw->port),
 946                            pf->stat_offsets_loaded,
 947                            &osd->eth.tx_multicast,
 948                            &nsd->eth.tx_multicast);
 949         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
 950                            I40E_GLPRT_BPTCL(hw->port),
 951                            pf->stat_offsets_loaded,
 952                            &osd->eth.tx_broadcast,
 953                            &nsd->eth.tx_broadcast);
 954
 955         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
 956                            pf->stat_offsets_loaded,
 957                            &osd->tx_dropped_link_down,
 958                            &nsd->tx_dropped_link_down);
 959
 960         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
 961                            pf->stat_offsets_loaded,
 962                            &osd->crc_errors, &nsd->crc_errors);
 963
 964         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
 965                            pf->stat_offsets_loaded,
 966                            &osd->illegal_bytes, &nsd->illegal_bytes);
 967
 968         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
 969                            pf->stat_offsets_loaded,
 970                            &osd->mac_local_faults,
 971                            &nsd->mac_local_faults);
 972         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
 973                            pf->stat_offsets_loaded,
 974                            &osd->mac_remote_faults,
 975                            &nsd->mac_remote_faults);
 976
 977         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
 978                            pf->stat_offsets_loaded,
 979                            &osd->rx_length_errors,
 980                            &nsd->rx_length_errors);
 981
 982         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
 983                            pf->stat_offsets_loaded,
 984                            &osd->link_xon_rx, &nsd->link_xon_rx);
 985         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
 986                            pf->stat_offsets_loaded,
 987                            &osd->link_xon_tx, &nsd->link_xon_tx);
 988         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
 989                            pf->stat_offsets_loaded,
 990                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
 991         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
 992                            pf->stat_offsets_loaded,
 993                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
 994
 995         for (i = 0; i < 8; i++) {
 996                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 997                                    pf->stat_offsets_loaded,
 998                                    &osd->priority_xoff_rx[i],
 999                                    &nsd->priority_xoff_rx[i]);
1000                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
1001                                    pf->stat_offsets_loaded,
1002                                    &osd->priority_xon_rx[i],
1003                                    &nsd->priority_xon_rx[i]);
1004                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
1005                                    pf->stat_offsets_loaded,
1006                                    &osd->priority_xon_tx[i],
1007                                    &nsd->priority_xon_tx[i]);
1008                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
1009                                    pf->stat_offsets_loaded,
1010                                    &osd->priority_xoff_tx[i],
1011                                    &nsd->priority_xoff_tx[i]);
1012                 i40e_stat_update32(hw,
1013                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
1014                                    pf->stat_offsets_loaded,
1015                                    &osd->priority_xon_2_xoff[i],
1016                                    &nsd->priority_xon_2_xoff[i]);
1017         }
1018
1019         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
1020                            I40E_GLPRT_PRC64L(hw->port),
1021                            pf->stat_offsets_loaded,
1022                            &osd->rx_size_64, &nsd->rx_size_64);
1023         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
1024                            I40E_GLPRT_PRC127L(hw->port),
1025                            pf->stat_offsets_loaded,
1026                            &osd->rx_size_127, &nsd->rx_size_127);
1027         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
1028                            I40E_GLPRT_PRC255L(hw->port),
1029                            pf->stat_offsets_loaded,
1030                            &osd->rx_size_255, &nsd->rx_size_255);
1031         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
1032                            I40E_GLPRT_PRC511L(hw->port),
1033                            pf->stat_offsets_loaded,
1034                            &osd->rx_size_511, &nsd->rx_size_511);
1035         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
1036                            I40E_GLPRT_PRC1023L(hw->port),
1037                            pf->stat_offsets_loaded,
1038                            &osd->rx_size_1023, &nsd->rx_size_1023);
1039         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
1040                            I40E_GLPRT_PRC1522L(hw->port),
1041                            pf->stat_offsets_loaded,
1042                            &osd->rx_size_1522, &nsd->rx_size_1522);
1043         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
1044                            I40E_GLPRT_PRC9522L(hw->port),
1045                            pf->stat_offsets_loaded,
1046                            &osd->rx_size_big, &nsd->rx_size_big);
1047
1048         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
1049                            I40E_GLPRT_PTC64L(hw->port),
1050                            pf->stat_offsets_loaded,
1051                            &osd->tx_size_64, &nsd->tx_size_64);
1052         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
1053                            I40E_GLPRT_PTC127L(hw->port),
1054                            pf->stat_offsets_loaded,
1055                            &osd->tx_size_127, &nsd->tx_size_127);
1056         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
1057                            I40E_GLPRT_PTC255L(hw->port),
1058                            pf->stat_offsets_loaded,
1059                            &osd->tx_size_255, &nsd->tx_size_255);
1060         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
1061                            I40E_GLPRT_PTC511L(hw->port),
1062                            pf->stat_offsets_loaded,
1063                            &osd->tx_size_511, &nsd->tx_size_511);
1064         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1065                            I40E_GLPRT_PTC1023L(hw->port),
1066                            pf->stat_offsets_loaded,
1067                            &osd->tx_size_1023, &nsd->tx_size_1023);
1068         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1069                            I40E_GLPRT_PTC1522L(hw->port),
1070                            pf->stat_offsets_loaded,
1071                            &osd->tx_size_1522, &nsd->tx_size_1522);
1072         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1073                            I40E_GLPRT_PTC9522L(hw->port),
1074                            pf->stat_offsets_loaded,
1075                            &osd->tx_size_big, &nsd->tx_size_big);
1076
1077         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1078                            pf->stat_offsets_loaded,
1079                            &osd->rx_undersize, &nsd->rx_undersize);
1080         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1081                            pf->stat_offsets_loaded,
1082                            &osd->rx_fragments, &nsd->rx_fragments);
1083         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1084                            pf->stat_offsets_loaded,
1085                            &osd->rx_oversize, &nsd->rx_oversize);
1086         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1087                            pf->stat_offsets_loaded,
1088                            &osd->rx_jabber, &nsd->rx_jabber);
1089
1090         /* FDIR stats */
1091         i40e_stat_update32(hw,
1092                            I40E_GLQF_PCNT(I40E_FD_ATR_STAT_IDX(pf->hw.pf_id)),
1093                            pf->stat_offsets_loaded,
1094                            &osd->fd_atr_match, &nsd->fd_atr_match);
1095         i40e_stat_update32(hw,
1096                            I40E_GLQF_PCNT(I40E_FD_SB_STAT_IDX(pf->hw.pf_id)),
1097                            pf->stat_offsets_loaded,
1098                            &osd->fd_sb_match, &nsd->fd_sb_match);
1099         i40e_stat_update32(hw,
1100                       I40E_GLQF_PCNT(I40E_FD_ATR_TUNNEL_STAT_IDX(pf->hw.pf_id)),
1101                       pf->stat_offsets_loaded,
1102                       &osd->fd_atr_tunnel_match, &nsd->fd_atr_tunnel_match);
1103
1104         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1105         nsd->tx_lpi_status =
1106                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1107                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1108         nsd->rx_lpi_status =
1109                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1110                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1111         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1112                            pf->stat_offsets_loaded,
1113                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1114         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1115                            pf->stat_offsets_loaded,
1116                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1117
1118         if (pf->flags & I40E_FLAG_FD_SB_ENABLED &&
1119             !(pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED))
1120                 nsd->fd_sb_status = true;
1121         else
1122                 nsd->fd_sb_status = false;
1123
1124         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED &&
1125             !(pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
1126                 nsd->fd_atr_status = true;
1127         else
1128                 nsd->fd_atr_status = false;
1129
1130         pf->stat_offsets_loaded = true;
1131 }
1132
1133 /**
1134  * i40e_update_stats - Update the various statistics counters.
1135  * @vsi: the VSI to be updated
1136  *
1137  * Update the various stats for this VSI and its related entities.
1138  **/
1139 void i40e_update_stats(struct i40e_vsi *vsi)
1140 {
1141         struct i40e_pf *pf = vsi->back;
1142
1143         if (vsi == pf->vsi[pf->lan_vsi])
1144                 i40e_update_pf_stats(pf);
1145
1146         i40e_update_vsi_stats(vsi);
1147 #ifdef I40E_FCOE
1148         i40e_update_fcoe_stats(vsi);
1149 #endif
1150 }
1151
1152 /**
1153  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1154  * @vsi: the VSI to be searched
1155  * @macaddr: the MAC address
1156  * @vlan: the vlan
1157  * @is_vf: make sure its a VF filter, else doesn't matter
1158  * @is_netdev: make sure its a netdev filter, else doesn't matter
1159  *
1160  * Returns ptr to the filter object or NULL
1161  **/
1162 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1163                                                 u8 *macaddr, s16 vlan,
1164                                                 bool is_vf, bool is_netdev)
1165 {
1166         struct i40e_mac_filter *f;
1167
1168         if (!vsi || !macaddr)
1169                 return NULL;
1170
1171         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1172                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1173                     (vlan == f->vlan)    &&
1174                     (!is_vf || f->is_vf) &&
1175                     (!is_netdev || f->is_netdev))
1176                         return f;
1177         }
1178         return NULL;
1179 }
1180
1181 /**
1182  * i40e_find_mac - Find a mac addr in the macvlan filters list
1183  * @vsi: the VSI to be searched
1184  * @macaddr: the MAC address we are searching for
1185  * @is_vf: make sure its a VF filter, else doesn't matter
1186  * @is_netdev: make sure its a netdev filter, else doesn't matter
1187  *
1188  * Returns the first filter with the provided MAC address or NULL if
1189  * MAC address was not found
1190  **/
1191 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1192                                       bool is_vf, bool is_netdev)
1193 {
1194         struct i40e_mac_filter *f;
1195
1196         if (!vsi || !macaddr)
1197                 return NULL;
1198
1199         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1200                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1201                     (!is_vf || f->is_vf) &&
1202                     (!is_netdev || f->is_netdev))
1203                         return f;
1204         }
1205         return NULL;
1206 }
1207
1208 /**
1209  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1210  * @vsi: the VSI to be searched
1211  *
1212  * Returns true if VSI is in vlan mode or false otherwise
1213  **/
1214 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1215 {
1216         struct i40e_mac_filter *f;
1217
1218         /* Only -1 for all the filters denotes not in vlan mode
1219          * so we have to go through all the list in order to make sure
1220          */
1221         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1222                 if (f->vlan >= 0 || vsi->info.pvid)
1223                         return true;
1224         }
1225
1226         return false;
1227 }
1228
1229 /**
1230  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1231  * @vsi: the VSI to be searched
1232  * @macaddr: the mac address to be filtered
1233  * @is_vf: true if it is a VF
1234  * @is_netdev: true if it is a netdev
1235  *
1236  * Goes through all the macvlan filters and adds a
1237  * macvlan filter for each unique vlan that already exists
1238  *
1239  * Returns first filter found on success, else NULL
1240  **/
1241 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1242                                              bool is_vf, bool is_netdev)
1243 {
1244         struct i40e_mac_filter *f;
1245
1246         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1247                 if (vsi->info.pvid)
1248                         f->vlan = le16_to_cpu(vsi->info.pvid);
1249                 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1250                                       is_vf, is_netdev)) {
1251                         if (!i40e_add_filter(vsi, macaddr, f->vlan,
1252                                              is_vf, is_netdev))
1253                                 return NULL;
1254                 }
1255         }
1256
1257         return list_first_entry_or_null(&vsi->mac_filter_list,
1258                                         struct i40e_mac_filter, list);
1259 }
1260
1261 /**
1262  * i40e_del_mac_all_vlan - Remove a MAC filter from all VLANS
1263  * @vsi: the VSI to be searched
1264  * @macaddr: the mac address to be removed
1265  * @is_vf: true if it is a VF
1266  * @is_netdev: true if it is a netdev
1267  *
1268  * Removes a given MAC address from a VSI, regardless of VLAN
1269  *
1270  * Returns 0 for success, or error
1271  **/
1272 int i40e_del_mac_all_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1273                           bool is_vf, bool is_netdev)
1274 {
1275         struct i40e_mac_filter *f = NULL;
1276         int changed = 0;
1277
1278         WARN(!spin_is_locked(&vsi->mac_filter_list_lock),
1279              "Missing mac_filter_list_lock\n");
1280         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1281                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1282                     (is_vf == f->is_vf) &&
1283                     (is_netdev == f->is_netdev)) {
1284                         f->counter--;
1285                         f->changed = true;
1286                         changed = 1;
1287                 }
1288         }
1289         if (changed) {
1290                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1291                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1292                 return 0;
1293         }
1294         return -ENOENT;
1295 }
1296
1297 /**
1298  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1299  * @vsi: the PF Main VSI - inappropriate for any other VSI
1300  * @macaddr: the MAC address
1301  *
1302  * Some older firmware configurations set up a default promiscuous VLAN
1303  * filter that needs to be removed.
1304  **/
1305 static int i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1306 {
1307         struct i40e_aqc_remove_macvlan_element_data element;
1308         struct i40e_pf *pf = vsi->back;
1309         i40e_status ret;
1310
1311         /* Only appropriate for the PF main VSI */
1312         if (vsi->type != I40E_VSI_MAIN)
1313                 return -EINVAL;
1314
1315         memset(&element, 0, sizeof(element));
1316         ether_addr_copy(element.mac_addr, macaddr);
1317         element.vlan_tag = 0;
1318         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1319                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1320         ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1321         if (ret)
1322                 return -ENOENT;
1323
1324         return 0;
1325 }
1326
1327 /**
1328  * i40e_add_filter - Add a mac/vlan filter to the VSI
1329  * @vsi: the VSI to be searched
1330  * @macaddr: the MAC address
1331  * @vlan: the vlan
1332  * @is_vf: make sure its a VF filter, else doesn't matter
1333  * @is_netdev: make sure its a netdev filter, else doesn't matter
1334  *
1335  * Returns ptr to the filter object or NULL when no memory available.
1336  *
1337  * NOTE: This function is expected to be called with mac_filter_list_lock
1338  * being held.
1339  **/
1340 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1341                                         u8 *macaddr, s16 vlan,
1342                                         bool is_vf, bool is_netdev)
1343 {
1344         struct i40e_mac_filter *f;
1345
1346         if (!vsi || !macaddr)
1347                 return NULL;
1348
1349         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1350         if (!f) {
1351                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1352                 if (!f)
1353                         goto add_filter_out;
1354
1355                 ether_addr_copy(f->macaddr, macaddr);
1356                 f->vlan = vlan;
1357                 f->changed = true;
1358
1359                 INIT_LIST_HEAD(&f->list);
1360                 list_add(&f->list, &vsi->mac_filter_list);
1361         }
1362
1363         /* increment counter and add a new flag if needed */
1364         if (is_vf) {
1365                 if (!f->is_vf) {
1366                         f->is_vf = true;
1367                         f->counter++;
1368                 }
1369         } else if (is_netdev) {
1370                 if (!f->is_netdev) {
1371                         f->is_netdev = true;
1372                         f->counter++;
1373                 }
1374         } else {
1375                 f->counter++;
1376         }
1377
1378         /* changed tells sync_filters_subtask to
1379          * push the filter down to the firmware
1380          */
1381         if (f->changed) {
1382                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1383                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1384         }
1385
1386 add_filter_out:
1387         return f;
1388 }
1389
1390 /**
1391  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1392  * @vsi: the VSI to be searched
1393  * @macaddr: the MAC address
1394  * @vlan: the vlan
1395  * @is_vf: make sure it's a VF filter, else doesn't matter
1396  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1397  *
1398  * NOTE: This function is expected to be called with mac_filter_list_lock
1399  * being held.
1400  **/
1401 void i40e_del_filter(struct i40e_vsi *vsi,
1402                      u8 *macaddr, s16 vlan,
1403                      bool is_vf, bool is_netdev)
1404 {
1405         struct i40e_mac_filter *f;
1406
1407         if (!vsi || !macaddr)
1408                 return;
1409
1410         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1411         if (!f || f->counter == 0)
1412                 return;
1413
1414         if (is_vf) {
1415                 if (f->is_vf) {
1416                         f->is_vf = false;
1417                         f->counter--;
1418                 }
1419         } else if (is_netdev) {
1420                 if (f->is_netdev) {
1421                         f->is_netdev = false;
1422                         f->counter--;
1423                 }
1424         } else {
1425                 /* make sure we don't remove a filter in use by VF or netdev */
1426                 int min_f = 0;
1427
1428                 min_f += (f->is_vf ? 1 : 0);
1429                 min_f += (f->is_netdev ? 1 : 0);
1430
1431                 if (f->counter > min_f)
1432                         f->counter--;
1433         }
1434
1435         /* counter == 0 tells sync_filters_subtask to
1436          * remove the filter from the firmware's list
1437          */
1438         if (f->counter == 0) {
1439                 f->changed = true;
1440                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1441                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1442         }
1443 }
1444
1445 /**
1446  * i40e_set_mac - NDO callback to set mac address
1447  * @netdev: network interface device structure
1448  * @p: pointer to an address structure
1449  *
1450  * Returns 0 on success, negative on failure
1451  **/
1452 #ifdef I40E_FCOE
1453 int i40e_set_mac(struct net_device *netdev, void *p)
1454 #else
1455 static int i40e_set_mac(struct net_device *netdev, void *p)
1456 #endif
1457 {
1458         struct i40e_netdev_priv *np = netdev_priv(netdev);
1459         struct i40e_vsi *vsi = np->vsi;
1460         struct i40e_pf *pf = vsi->back;
1461         struct i40e_hw *hw = &pf->hw;
1462         struct sockaddr *addr = p;
1463         struct i40e_mac_filter *f;
1464
1465         if (!is_valid_ether_addr(addr->sa_data))
1466                 return -EADDRNOTAVAIL;
1467
1468         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1469                 netdev_info(netdev, "already using mac address %pM\n",
1470                             addr->sa_data);
1471                 return 0;
1472         }
1473
1474         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1475             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1476                 return -EADDRNOTAVAIL;
1477
1478         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1479                 netdev_info(netdev, "returning to hw mac address %pM\n",
1480                             hw->mac.addr);
1481         else
1482                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1483
1484         if (vsi->type == I40E_VSI_MAIN) {
1485                 i40e_status ret;
1486
1487                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1488                                                 I40E_AQC_WRITE_TYPE_LAA_WOL,
1489                                                 addr->sa_data, NULL);
1490                 if (ret) {
1491                         netdev_info(netdev,
1492                                     "Addr change for Main VSI failed: %d\n",
1493                                     ret);
1494                         return -EADDRNOTAVAIL;
1495                 }
1496         }
1497
1498         if (ether_addr_equal(netdev->dev_addr, hw->mac.addr)) {
1499                 struct i40e_aqc_remove_macvlan_element_data element;
1500
1501                 memset(&element, 0, sizeof(element));
1502                 ether_addr_copy(element.mac_addr, netdev->dev_addr);
1503                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1504                 i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1505         } else {
1506                 spin_lock_bh(&vsi->mac_filter_list_lock);
1507                 i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
1508                                 false, false);
1509                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1510         }
1511
1512         if (ether_addr_equal(addr->sa_data, hw->mac.addr)) {
1513                 struct i40e_aqc_add_macvlan_element_data element;
1514
1515                 memset(&element, 0, sizeof(element));
1516                 ether_addr_copy(element.mac_addr, hw->mac.addr);
1517                 element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
1518                 i40e_aq_add_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1519         } else {
1520                 spin_lock_bh(&vsi->mac_filter_list_lock);
1521                 f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY,
1522                                     false, false);
1523                 if (f)
1524                         f->is_laa = true;
1525                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1526         }
1527
1528         ether_addr_copy(netdev->dev_addr, addr->sa_data);
1529
1530         return i40e_sync_vsi_filters(vsi);
1531 }
1532
1533 /**
1534  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1535  * @vsi: the VSI being setup
1536  * @ctxt: VSI context structure
1537  * @enabled_tc: Enabled TCs bitmap
1538  * @is_add: True if called before Add VSI
1539  *
1540  * Setup VSI queue mapping for enabled traffic classes.
1541  **/
1542 #ifdef I40E_FCOE
1543 void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1544                               struct i40e_vsi_context *ctxt,
1545                               u8 enabled_tc,
1546                               bool is_add)
1547 #else
1548 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1549                                      struct i40e_vsi_context *ctxt,
1550                                      u8 enabled_tc,
1551                                      bool is_add)
1552 #endif
1553 {
1554         struct i40e_pf *pf = vsi->back;
1555         u16 sections = 0;
1556         u8 netdev_tc = 0;
1557         u16 numtc = 0;
1558         u16 qcount;
1559         u8 offset;
1560         u16 qmap;
1561         int i;
1562         u16 num_tc_qps = 0;
1563
1564         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1565         offset = 0;
1566
1567         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1568                 /* Find numtc from enabled TC bitmap */
1569                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1570                         if (enabled_tc & BIT(i)) /* TC is enabled */
1571                                 numtc++;
1572                 }
1573                 if (!numtc) {
1574                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1575                         numtc = 1;
1576                 }
1577         } else {
1578                 /* At least TC0 is enabled in case of non-DCB case */
1579                 numtc = 1;
1580         }
1581
1582         vsi->tc_config.numtc = numtc;
1583         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1584         /* Number of queues per enabled TC */
1585         /* In MFP case we can have a much lower count of MSIx
1586          * vectors available and so we need to lower the used
1587          * q count.
1588          */
1589         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1590                 qcount = min_t(int, vsi->alloc_queue_pairs, pf->num_lan_msix);
1591         else
1592                 qcount = vsi->alloc_queue_pairs;
1593         num_tc_qps = qcount / numtc;
1594         num_tc_qps = min_t(int, num_tc_qps, i40e_pf_get_max_q_per_tc(pf));
1595
1596         /* Setup queue offset/count for all TCs for given VSI */
1597         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1598                 /* See if the given TC is enabled for the given VSI */
1599                 if (vsi->tc_config.enabled_tc & BIT(i)) {
1600                         /* TC is enabled */
1601                         int pow, num_qps;
1602
1603                         switch (vsi->type) {
1604                         case I40E_VSI_MAIN:
1605                                 qcount = min_t(int, pf->alloc_rss_size,
1606                                                num_tc_qps);
1607                                 break;
1608 #ifdef I40E_FCOE
1609                         case I40E_VSI_FCOE:
1610                                 qcount = num_tc_qps;
1611                                 break;
1612 #endif
1613                         case I40E_VSI_FDIR:
1614                         case I40E_VSI_SRIOV:
1615                         case I40E_VSI_VMDQ2:
1616                         default:
1617                                 qcount = num_tc_qps;
1618                                 WARN_ON(i != 0);
1619                                 break;
1620                         }
1621                         vsi->tc_config.tc_info[i].qoffset = offset;
1622                         vsi->tc_config.tc_info[i].qcount = qcount;
1623
1624                         /* find the next higher power-of-2 of num queue pairs */
1625                         num_qps = qcount;
1626                         pow = 0;
1627                         while (num_qps && (BIT_ULL(pow) < qcount)) {
1628                                 pow++;
1629                                 num_qps >>= 1;
1630                         }
1631
1632                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1633                         qmap =
1634                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1635                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1636
1637                         offset += qcount;
1638                 } else {
1639                         /* TC is not enabled so set the offset to
1640                          * default queue and allocate one queue
1641                          * for the given TC.
1642                          */
1643                         vsi->tc_config.tc_info[i].qoffset = 0;
1644                         vsi->tc_config.tc_info[i].qcount = 1;
1645                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1646
1647                         qmap = 0;
1648                 }
1649                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1650         }
1651
1652         /* Set actual Tx/Rx queue pairs */
1653         vsi->num_queue_pairs = offset;
1654         if ((vsi->type == I40E_VSI_MAIN) && (numtc == 1)) {
1655                 if (vsi->req_queue_pairs > 0)
1656                         vsi->num_queue_pairs = vsi->req_queue_pairs;
1657                 else if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1658                         vsi->num_queue_pairs = pf->num_lan_msix;
1659         }
1660
1661         /* Scheduler section valid can only be set for ADD VSI */
1662         if (is_add) {
1663                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1664
1665                 ctxt->info.up_enable_bits = enabled_tc;
1666         }
1667         if (vsi->type == I40E_VSI_SRIOV) {
1668                 ctxt->info.mapping_flags |=
1669                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1670                 for (i = 0; i < vsi->num_queue_pairs; i++)
1671                         ctxt->info.queue_mapping[i] =
1672                                                cpu_to_le16(vsi->base_queue + i);
1673         } else {
1674                 ctxt->info.mapping_flags |=
1675                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1676                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1677         }
1678         ctxt->info.valid_sections |= cpu_to_le16(sections);
1679 }
1680
1681 /**
1682  * i40e_set_rx_mode - NDO callback to set the netdev filters
1683  * @netdev: network interface device structure
1684  **/
1685 #ifdef I40E_FCOE
1686 void i40e_set_rx_mode(struct net_device *netdev)
1687 #else
1688 static void i40e_set_rx_mode(struct net_device *netdev)
1689 #endif
1690 {
1691         struct i40e_netdev_priv *np = netdev_priv(netdev);
1692         struct i40e_mac_filter *f, *ftmp;
1693         struct i40e_vsi *vsi = np->vsi;
1694         struct netdev_hw_addr *uca;
1695         struct netdev_hw_addr *mca;
1696         struct netdev_hw_addr *ha;
1697
1698         spin_lock_bh(&vsi->mac_filter_list_lock);
1699
1700         /* add addr if not already in the filter list */
1701         netdev_for_each_uc_addr(uca, netdev) {
1702                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1703                         if (i40e_is_vsi_in_vlan(vsi))
1704                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1705                                                      false, true);
1706                         else
1707                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1708                                                 false, true);
1709                 }
1710         }
1711
1712         netdev_for_each_mc_addr(mca, netdev) {
1713                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1714                         if (i40e_is_vsi_in_vlan(vsi))
1715                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1716                                                      false, true);
1717                         else
1718                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1719                                                 false, true);
1720                 }
1721         }
1722
1723         /* remove filter if not in netdev list */
1724         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1725
1726                 if (!f->is_netdev)
1727                         continue;
1728
1729                 netdev_for_each_mc_addr(mca, netdev)
1730                         if (ether_addr_equal(mca->addr, f->macaddr))
1731                                 goto bottom_of_search_loop;
1732
1733                 netdev_for_each_uc_addr(uca, netdev)
1734                         if (ether_addr_equal(uca->addr, f->macaddr))
1735                                 goto bottom_of_search_loop;
1736
1737                 for_each_dev_addr(netdev, ha)
1738                         if (ether_addr_equal(ha->addr, f->macaddr))
1739                                 goto bottom_of_search_loop;
1740
1741                 /* f->macaddr wasn't found in uc, mc, or ha list so delete it */
1742                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1743
1744 bottom_of_search_loop:
1745                 continue;
1746         }
1747         spin_unlock_bh(&vsi->mac_filter_list_lock);
1748
1749         /* check for other flag changes */
1750         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1751                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1752                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1753         }
1754 }
1755
1756 /**
1757  * i40e_mac_filter_entry_clone - Clones a MAC filter entry
1758  * @src: source MAC filter entry to be clones
1759  *
1760  * Returns the pointer to newly cloned MAC filter entry or NULL
1761  * in case of error
1762  **/
1763 static struct i40e_mac_filter *i40e_mac_filter_entry_clone(
1764                                         struct i40e_mac_filter *src)
1765 {
1766         struct i40e_mac_filter *f;
1767
1768         f = kzalloc(sizeof(*f), GFP_ATOMIC);
1769         if (!f)
1770                 return NULL;
1771         *f = *src;
1772
1773         INIT_LIST_HEAD(&f->list);
1774
1775         return f;
1776 }
1777
1778 /**
1779  * i40e_undo_del_filter_entries - Undo the changes made to MAC filter entries
1780  * @vsi: pointer to vsi struct
1781  * @from: Pointer to list which contains MAC filter entries - changes to
1782  *        those entries needs to be undone.
1783  *
1784  * MAC filter entries from list were slated to be removed from device.
1785  **/
1786 static void i40e_undo_del_filter_entries(struct i40e_vsi *vsi,
1787                                          struct list_head *from)
1788 {
1789         struct i40e_mac_filter *f, *ftmp;
1790
1791         list_for_each_entry_safe(f, ftmp, from, list) {
1792                 f->changed = true;
1793                 /* Move the element back into MAC filter list*/
1794                 list_move_tail(&f->list, &vsi->mac_filter_list);
1795         }
1796 }
1797
1798 /**
1799  * i40e_undo_add_filter_entries - Undo the changes made to MAC filter entries
1800  * @vsi: pointer to vsi struct
1801  *
1802  * MAC filter entries from list were slated to be added from device.
1803  **/
1804 static void i40e_undo_add_filter_entries(struct i40e_vsi *vsi)
1805 {
1806         struct i40e_mac_filter *f, *ftmp;
1807
1808         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1809                 if (!f->changed && f->counter)
1810                         f->changed = true;
1811         }
1812 }
1813
1814 /**
1815  * i40e_cleanup_add_list - Deletes the element from add list and release
1816  *                      memory
1817  * @add_list: Pointer to list which contains MAC filter entries
1818  **/
1819 static void i40e_cleanup_add_list(struct list_head *add_list)
1820 {
1821         struct i40e_mac_filter *f, *ftmp;
1822
1823         list_for_each_entry_safe(f, ftmp, add_list, list) {
1824                 list_del(&f->list);
1825                 kfree(f);
1826         }
1827 }
1828
1829 /**
1830  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1831  * @vsi: ptr to the VSI
1832  *
1833  * Push any outstanding VSI filter changes through the AdminQ.
1834  *
1835  * Returns 0 or error value
1836  **/
1837 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
1838 {
1839         struct list_head tmp_del_list, tmp_add_list;
1840         struct i40e_mac_filter *f, *ftmp, *fclone;
1841         bool promisc_forced_on = false;
1842         bool add_happened = false;
1843         int filter_list_len = 0;
1844         u32 changed_flags = 0;
1845         i40e_status aq_ret = 0;
1846         bool err_cond = false;
1847         int retval = 0;
1848         struct i40e_pf *pf;
1849         int num_add = 0;
1850         int num_del = 0;
1851         int aq_err = 0;
1852         u16 cmd_flags;
1853
1854         /* empty array typed pointers, kcalloc later */
1855         struct i40e_aqc_add_macvlan_element_data *add_list;
1856         struct i40e_aqc_remove_macvlan_element_data *del_list;
1857
1858         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1859                 usleep_range(1000, 2000);
1860         pf = vsi->back;
1861
1862         if (vsi->netdev) {
1863                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1864                 vsi->current_netdev_flags = vsi->netdev->flags;
1865         }
1866
1867         INIT_LIST_HEAD(&tmp_del_list);
1868         INIT_LIST_HEAD(&tmp_add_list);
1869
1870         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1871                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1872
1873                 spin_lock_bh(&vsi->mac_filter_list_lock);
1874                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1875                         if (!f->changed)
1876                                 continue;
1877
1878                         if (f->counter != 0)
1879                                 continue;
1880                         f->changed = false;
1881
1882                         /* Move the element into temporary del_list */
1883                         list_move_tail(&f->list, &tmp_del_list);
1884                 }
1885
1886                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1887                         if (!f->changed)
1888                                 continue;
1889
1890                         if (f->counter == 0)
1891                                 continue;
1892                         f->changed = false;
1893
1894                         /* Clone MAC filter entry and add into temporary list */
1895                         fclone = i40e_mac_filter_entry_clone(f);
1896                         if (!fclone) {
1897                                 err_cond = true;
1898                                 break;
1899                         }
1900                         list_add_tail(&fclone->list, &tmp_add_list);
1901                 }
1902
1903                 /* if failed to clone MAC filter entry - undo */
1904                 if (err_cond) {
1905                         i40e_undo_del_filter_entries(vsi, &tmp_del_list);
1906                         i40e_undo_add_filter_entries(vsi);
1907                 }
1908                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1909
1910                 if (err_cond) {
1911                         i40e_cleanup_add_list(&tmp_add_list);
1912                         retval = -ENOMEM;
1913                         goto out;
1914                 }
1915         }
1916
1917         /* Now process 'del_list' outside the lock */
1918         if (!list_empty(&tmp_del_list)) {
1919                 filter_list_len = pf->hw.aq.asq_buf_size /
1920                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1921                 del_list = kcalloc(filter_list_len,
1922                             sizeof(struct i40e_aqc_remove_macvlan_element_data),
1923                             GFP_KERNEL);
1924                 if (!del_list) {
1925                         i40e_cleanup_add_list(&tmp_add_list);
1926
1927                         /* Undo VSI's MAC filter entry element updates */
1928                         spin_lock_bh(&vsi->mac_filter_list_lock);
1929                         i40e_undo_del_filter_entries(vsi, &tmp_del_list);
1930                         i40e_undo_add_filter_entries(vsi);
1931                         spin_unlock_bh(&vsi->mac_filter_list_lock);
1932                         retval = -ENOMEM;
1933                         goto out;
1934                 }
1935
1936                 list_for_each_entry_safe(f, ftmp, &tmp_del_list, list) {
1937                         cmd_flags = 0;
1938
1939                         /* add to delete list */
1940                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
1941                         del_list[num_del].vlan_tag =
1942                                 cpu_to_le16((u16)(f->vlan ==
1943                                             I40E_VLAN_ANY ? 0 : f->vlan));
1944
1945                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1946                         del_list[num_del].flags = cmd_flags;
1947                         num_del++;
1948
1949                         /* flush a full buffer */
1950                         if (num_del == filter_list_len) {
1951                                 aq_ret = i40e_aq_remove_macvlan(&pf->hw,
1952                                                                 vsi->seid,
1953                                                                 del_list,
1954                                                                 num_del,
1955                                                                 NULL);
1956                                 aq_err = pf->hw.aq.asq_last_status;
1957                                 num_del = 0;
1958                                 memset(del_list, 0, sizeof(*del_list));
1959
1960                                 if (aq_ret && aq_err != I40E_AQ_RC_ENOENT) {
1961                                         retval = -EIO;
1962                                         dev_err(&pf->pdev->dev,
1963                                                 "ignoring delete macvlan error, err %s, aq_err %s while flushing a full buffer\n",
1964                                                 i40e_stat_str(&pf->hw, aq_ret),
1965                                                 i40e_aq_str(&pf->hw, aq_err));
1966                                 }
1967                         }
1968                         /* Release memory for MAC filter entries which were
1969                          * synced up with HW.
1970                          */
1971                         list_del(&f->list);
1972                         kfree(f);
1973                 }
1974
1975                 if (num_del) {
1976                         aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
1977                                                         del_list, num_del,
1978                                                         NULL);
1979                         aq_err = pf->hw.aq.asq_last_status;
1980                         num_del = 0;
1981
1982                         if (aq_ret && aq_err != I40E_AQ_RC_ENOENT)
1983                                 dev_info(&pf->pdev->dev,
1984                                          "ignoring delete macvlan error, err %s aq_err %s\n",
1985                                          i40e_stat_str(&pf->hw, aq_ret),
1986                                          i40e_aq_str(&pf->hw, aq_err));
1987                 }
1988
1989                 kfree(del_list);
1990                 del_list = NULL;
1991         }
1992
1993         if (!list_empty(&tmp_add_list)) {
1994
1995                 /* do all the adds now */
1996                 filter_list_len = pf->hw.aq.asq_buf_size /
1997                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1998                 add_list = kcalloc(filter_list_len,
1999                                sizeof(struct i40e_aqc_add_macvlan_element_data),
2000                                GFP_KERNEL);
2001                 if (!add_list) {
2002                         /* Purge element from temporary lists */
2003                         i40e_cleanup_add_list(&tmp_add_list);
2004
2005                         /* Undo add filter entries from VSI MAC filter list */
2006                         spin_lock_bh(&vsi->mac_filter_list_lock);
2007                         i40e_undo_add_filter_entries(vsi);
2008                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2009                         retval = -ENOMEM;
2010                         goto out;
2011                 }
2012
2013                 list_for_each_entry_safe(f, ftmp, &tmp_add_list, list) {
2014
2015                         add_happened = true;
2016                         cmd_flags = 0;
2017
2018                         /* add to add array */
2019                         ether_addr_copy(add_list[num_add].mac_addr, f->macaddr);
2020                         add_list[num_add].vlan_tag =
2021                                 cpu_to_le16(
2022                                  (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
2023                         add_list[num_add].queue_number = 0;
2024
2025                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
2026                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
2027                         num_add++;
2028
2029                         /* flush a full buffer */
2030                         if (num_add == filter_list_len) {
2031                                 aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
2032                                                              add_list, num_add,
2033                                                              NULL);
2034                                 aq_err = pf->hw.aq.asq_last_status;
2035                                 num_add = 0;
2036
2037                                 if (aq_ret)
2038                                         break;
2039                                 memset(add_list, 0, sizeof(*add_list));
2040                         }
2041                         /* Entries from tmp_add_list were cloned from MAC
2042                          * filter list, hence clean those cloned entries
2043                          */
2044                         list_del(&f->list);
2045                         kfree(f);
2046                 }
2047
2048                 if (num_add) {
2049                         aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
2050                                                      add_list, num_add, NULL);
2051                         aq_err = pf->hw.aq.asq_last_status;
2052                         num_add = 0;
2053                 }
2054                 kfree(add_list);
2055                 add_list = NULL;
2056
2057                 if (add_happened && aq_ret && aq_err != I40E_AQ_RC_EINVAL) {
2058                         retval = i40e_aq_rc_to_posix(aq_ret, aq_err);
2059                         dev_info(&pf->pdev->dev,
2060                                  "add filter failed, err %s aq_err %s\n",
2061                                  i40e_stat_str(&pf->hw, aq_ret),
2062                                  i40e_aq_str(&pf->hw, aq_err));
2063                         if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
2064                             !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2065                                       &vsi->state)) {
2066                                 promisc_forced_on = true;
2067                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2068                                         &vsi->state);
2069                                 dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
2070                         }
2071                 }
2072         }
2073
2074         /* check for changes in promiscuous modes */
2075         if (changed_flags & IFF_ALLMULTI) {
2076                 bool cur_multipromisc;
2077
2078                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
2079                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
2080                                                                vsi->seid,
2081                                                                cur_multipromisc,
2082                                                                NULL);
2083                 if (aq_ret) {
2084                         retval = i40e_aq_rc_to_posix(aq_ret,
2085                                                      pf->hw.aq.asq_last_status);
2086                         dev_info(&pf->pdev->dev,
2087                                  "set multi promisc failed, err %s aq_err %s\n",
2088                                  i40e_stat_str(&pf->hw, aq_ret),
2089                                  i40e_aq_str(&pf->hw,
2090                                              pf->hw.aq.asq_last_status));
2091                 }
2092         }
2093         if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
2094                 bool cur_promisc;
2095
2096                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
2097                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2098                                         &vsi->state));
2099                 if (vsi->type == I40E_VSI_MAIN && pf->lan_veb != I40E_NO_VEB) {
2100                         /* set defport ON for Main VSI instead of true promisc
2101                          * this way we will get all unicast/multicast and VLAN
2102                          * promisc behavior but will not get VF or VMDq traffic
2103                          * replicated on the Main VSI.
2104                          */
2105                         if (pf->cur_promisc != cur_promisc) {
2106                                 pf->cur_promisc = cur_promisc;
2107                                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
2108                         }
2109                 } else {
2110                         aq_ret = i40e_aq_set_vsi_unicast_promiscuous(
2111                                                           &vsi->back->hw,
2112                                                           vsi->seid,
2113                                                           cur_promisc, NULL);
2114                         if (aq_ret) {
2115                                 retval =
2116                                 i40e_aq_rc_to_posix(aq_ret,
2117                                                     pf->hw.aq.asq_last_status);
2118                                 dev_info(&pf->pdev->dev,
2119                                          "set unicast promisc failed, err %d, aq_err %d\n",
2120                                          aq_ret, pf->hw.aq.asq_last_status);
2121                         }
2122                         aq_ret = i40e_aq_set_vsi_multicast_promiscuous(
2123                                                           &vsi->back->hw,
2124                                                           vsi->seid,
2125                                                           cur_promisc, NULL);
2126                         if (aq_ret) {
2127                                 retval =
2128                                 i40e_aq_rc_to_posix(aq_ret,
2129                                                     pf->hw.aq.asq_last_status);
2130                                 dev_info(&pf->pdev->dev,
2131                                          "set multicast promisc failed, err %d, aq_err %d\n",
2132                                          aq_ret, pf->hw.aq.asq_last_status);
2133                         }
2134                 }
2135                 aq_ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
2136                                                    vsi->seid,
2137                                                    cur_promisc, NULL);
2138                 if (aq_ret) {
2139                         retval = i40e_aq_rc_to_posix(aq_ret,
2140                                                      pf->hw.aq.asq_last_status);
2141                         dev_info(&pf->pdev->dev,
2142                                  "set brdcast promisc failed, err %s, aq_err %s\n",
2143                                  i40e_stat_str(&pf->hw, aq_ret),
2144                                  i40e_aq_str(&pf->hw,
2145                                              pf->hw.aq.asq_last_status));
2146                 }
2147         }
2148 out:
2149         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
2150         return retval;
2151 }
2152
2153 /**
2154  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
2155  * @pf: board private structure
2156  **/
2157 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
2158 {
2159         int v;
2160
2161         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
2162                 return;
2163         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
2164
2165         for (v = 0; v < pf->num_alloc_vsi; v++) {
2166                 if (pf->vsi[v] &&
2167                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED)) {
2168                         int ret = i40e_sync_vsi_filters(pf->vsi[v]);
2169
2170                         if (ret) {
2171                                 /* come back and try again later */
2172                                 pf->flags |= I40E_FLAG_FILTER_SYNC;
2173                                 break;
2174                         }
2175                 }
2176         }
2177 }
2178
2179 /**
2180  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
2181  * @netdev: network interface device structure
2182  * @new_mtu: new value for maximum frame size
2183  *
2184  * Returns 0 on success, negative on failure
2185  **/
2186 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
2187 {
2188         struct i40e_netdev_priv *np = netdev_priv(netdev);
2189         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
2190         struct i40e_vsi *vsi = np->vsi;
2191
2192         /* MTU < 68 is an error and causes problems on some kernels */
2193         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
2194                 return -EINVAL;
2195
2196         netdev_info(netdev, "changing MTU from %d to %d\n",
2197                     netdev->mtu, new_mtu);
2198         netdev->mtu = new_mtu;
2199         if (netif_running(netdev))
2200                 i40e_vsi_reinit_locked(vsi);
2201
2202         return 0;
2203 }
2204
2205 /**
2206  * i40e_ioctl - Access the hwtstamp interface
2207  * @netdev: network interface device structure
2208  * @ifr: interface request data
2209  * @cmd: ioctl command
2210  **/
2211 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2212 {
2213         struct i40e_netdev_priv *np = netdev_priv(netdev);
2214         struct i40e_pf *pf = np->vsi->back;
2215
2216         switch (cmd) {
2217         case SIOCGHWTSTAMP:
2218                 return i40e_ptp_get_ts_config(pf, ifr);
2219         case SIOCSHWTSTAMP:
2220                 return i40e_ptp_set_ts_config(pf, ifr);
2221         default:
2222                 return -EOPNOTSUPP;
2223         }
2224 }
2225
2226 /**
2227  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
2228  * @vsi: the vsi being adjusted
2229  **/
2230 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
2231 {
2232         struct i40e_vsi_context ctxt;
2233         i40e_status ret;
2234
2235         if ((vsi->info.valid_sections &
2236              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2237             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
2238                 return;  /* already enabled */
2239
2240         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2241         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2242                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
2243
2244         ctxt.seid = vsi->seid;
2245         ctxt.info = vsi->info;
2246         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2247         if (ret) {
2248                 dev_info(&vsi->back->pdev->dev,
2249                          "update vlan stripping failed, err %s aq_err %s\n",
2250                          i40e_stat_str(&vsi->back->hw, ret),
2251                          i40e_aq_str(&vsi->back->hw,
2252                                      vsi->back->hw.aq.asq_last_status));
2253         }
2254 }
2255
2256 /**
2257  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
2258  * @vsi: the vsi being adjusted
2259  **/
2260 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
2261 {
2262         struct i40e_vsi_context ctxt;
2263         i40e_status ret;
2264
2265         if ((vsi->info.valid_sections &
2266              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2267             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
2268              I40E_AQ_VSI_PVLAN_EMOD_MASK))
2269                 return;  /* already disabled */
2270
2271         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2272         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2273                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
2274
2275         ctxt.seid = vsi->seid;
2276         ctxt.info = vsi->info;
2277         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2278         if (ret) {
2279                 dev_info(&vsi->back->pdev->dev,
2280                          "update vlan stripping failed, err %s aq_err %s\n",
2281                          i40e_stat_str(&vsi->back->hw, ret),
2282                          i40e_aq_str(&vsi->back->hw,
2283                                      vsi->back->hw.aq.asq_last_status));
2284         }
2285 }
2286
2287 /**
2288  * i40e_vlan_rx_register - Setup or shutdown vlan offload
2289  * @netdev: network interface to be adjusted
2290  * @features: netdev features to test if VLAN offload is enabled or not
2291  **/
2292 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
2293 {
2294         struct i40e_netdev_priv *np = netdev_priv(netdev);
2295         struct i40e_vsi *vsi = np->vsi;
2296
2297         if (features & NETIF_F_HW_VLAN_CTAG_RX)
2298                 i40e_vlan_stripping_enable(vsi);
2299         else
2300                 i40e_vlan_stripping_disable(vsi);
2301 }
2302
2303 /**
2304  * i40e_vsi_add_vlan - Add vsi membership for given vlan
2305  * @vsi: the vsi being configured
2306  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2307  **/
2308 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
2309 {
2310         struct i40e_mac_filter *f, *add_f;
2311         bool is_netdev, is_vf;
2312
2313         is_vf = (vsi->type == I40E_VSI_SRIOV);
2314         is_netdev = !!(vsi->netdev);
2315
2316         /* Locked once because all functions invoked below iterates list*/
2317         spin_lock_bh(&vsi->mac_filter_list_lock);
2318
2319         if (is_netdev) {
2320                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
2321                                         is_vf, is_netdev);
2322                 if (!add_f) {
2323                         dev_info(&vsi->back->pdev->dev,
2324                                  "Could not add vlan filter %d for %pM\n",
2325                                  vid, vsi->netdev->dev_addr);
2326                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2327                         return -ENOMEM;
2328                 }
2329         }
2330
2331         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2332                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2333                 if (!add_f) {
2334                         dev_info(&vsi->back->pdev->dev,
2335                                  "Could not add vlan filter %d for %pM\n",
2336                                  vid, f->macaddr);
2337                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2338                         return -ENOMEM;
2339                 }
2340         }
2341
2342         /* Now if we add a vlan tag, make sure to check if it is the first
2343          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
2344          * with 0, so we now accept untagged and specified tagged traffic
2345          * (and not any taged and untagged)
2346          */
2347         if (vid > 0) {
2348                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
2349                                                   I40E_VLAN_ANY,
2350                                                   is_vf, is_netdev)) {
2351                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
2352                                         I40E_VLAN_ANY, is_vf, is_netdev);
2353                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
2354                                                 is_vf, is_netdev);
2355                         if (!add_f) {
2356                                 dev_info(&vsi->back->pdev->dev,
2357                                          "Could not add filter 0 for %pM\n",
2358                                          vsi->netdev->dev_addr);
2359                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2360                                 return -ENOMEM;
2361                         }
2362                 }
2363         }
2364
2365         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
2366         if (vid > 0 && !vsi->info.pvid) {
2367                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2368                         if (!i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2369                                               is_vf, is_netdev))
2370                                 continue;
2371                         i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2372                                         is_vf, is_netdev);
2373                         add_f = i40e_add_filter(vsi, f->macaddr,
2374                                                 0, is_vf, is_netdev);
2375                         if (!add_f) {
2376                                 dev_info(&vsi->back->pdev->dev,
2377                                          "Could not add filter 0 for %pM\n",
2378                                         f->macaddr);
2379                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2380                                 return -ENOMEM;
2381                         }
2382                 }
2383         }
2384
2385         spin_unlock_bh(&vsi->mac_filter_list_lock);
2386
2387         /* schedule our worker thread which will take care of
2388          * applying the new filter changes
2389          */
2390         i40e_service_event_schedule(vsi->back);
2391         return 0;
2392 }
2393
2394 /**
2395  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
2396  * @vsi: the vsi being configured
2397  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2398  *
2399  * Return: 0 on success or negative otherwise
2400  **/
2401 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
2402 {
2403         struct net_device *netdev = vsi->netdev;
2404         struct i40e_mac_filter *f, *add_f;
2405         bool is_vf, is_netdev;
2406         int filter_count = 0;
2407
2408         is_vf = (vsi->type == I40E_VSI_SRIOV);
2409         is_netdev = !!(netdev);
2410
2411         /* Locked once because all functions invoked below iterates list */
2412         spin_lock_bh(&vsi->mac_filter_list_lock);
2413
2414         if (is_netdev)
2415                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
2416
2417         list_for_each_entry(f, &vsi->mac_filter_list, list)
2418                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2419
2420         /* go through all the filters for this VSI and if there is only
2421          * vid == 0 it means there are no other filters, so vid 0 must
2422          * be replaced with -1. This signifies that we should from now
2423          * on accept any traffic (with any tag present, or untagged)
2424          */
2425         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2426                 if (is_netdev) {
2427                         if (f->vlan &&
2428                             ether_addr_equal(netdev->dev_addr, f->macaddr))
2429                                 filter_count++;
2430                 }
2431
2432                 if (f->vlan)
2433                         filter_count++;
2434         }
2435
2436         if (!filter_count && is_netdev) {
2437                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
2438                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
2439                                     is_vf, is_netdev);
2440                 if (!f) {
2441                         dev_info(&vsi->back->pdev->dev,
2442                                  "Could not add filter %d for %pM\n",
2443                                  I40E_VLAN_ANY, netdev->dev_addr);
2444                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2445                         return -ENOMEM;
2446                 }
2447         }
2448
2449         if (!filter_count) {
2450                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2451                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
2452                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2453                                                 is_vf, is_netdev);
2454                         if (!add_f) {
2455                                 dev_info(&vsi->back->pdev->dev,
2456                                          "Could not add filter %d for %pM\n",
2457                                          I40E_VLAN_ANY, f->macaddr);
2458                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2459                                 return -ENOMEM;
2460                         }
2461                 }
2462         }
2463
2464         spin_unlock_bh(&vsi->mac_filter_list_lock);
2465
2466         /* schedule our worker thread which will take care of
2467          * applying the new filter changes
2468          */
2469         i40e_service_event_schedule(vsi->back);
2470         return 0;
2471 }
2472
2473 /**
2474  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2475  * @netdev: network interface to be adjusted
2476  * @vid: vlan id to be added
2477  *
2478  * net_device_ops implementation for adding vlan ids
2479  **/
2480 #ifdef I40E_FCOE
2481 int i40e_vlan_rx_add_vid(struct net_device *netdev,
2482                          __always_unused __be16 proto, u16 vid)
2483 #else
2484 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2485                                 __always_unused __be16 proto, u16 vid)
2486 #endif
2487 {
2488         struct i40e_netdev_priv *np = netdev_priv(netdev);
2489         struct i40e_vsi *vsi = np->vsi;
2490         int ret = 0;
2491
2492         if (vid > 4095)
2493                 return -EINVAL;
2494
2495         netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
2496
2497         /* If the network stack called us with vid = 0 then
2498          * it is asking to receive priority tagged packets with
2499          * vlan id 0.  Our HW receives them by default when configured
2500          * to receive untagged packets so there is no need to add an
2501          * extra filter for vlan 0 tagged packets.
2502          */
2503         if (vid)
2504                 ret = i40e_vsi_add_vlan(vsi, vid);
2505
2506         if (!ret && (vid < VLAN_N_VID))
2507                 set_bit(vid, vsi->active_vlans);
2508
2509         return ret;
2510 }
2511
2512 /**
2513  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2514  * @netdev: network interface to be adjusted
2515  * @vid: vlan id to be removed
2516  *
2517  * net_device_ops implementation for removing vlan ids
2518  **/
2519 #ifdef I40E_FCOE
2520 int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2521                           __always_unused __be16 proto, u16 vid)
2522 #else
2523 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2524                                  __always_unused __be16 proto, u16 vid)
2525 #endif
2526 {
2527         struct i40e_netdev_priv *np = netdev_priv(netdev);
2528         struct i40e_vsi *vsi = np->vsi;
2529
2530         netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
2531
2532         /* return code is ignored as there is nothing a user
2533          * can do about failure to remove and a log message was
2534          * already printed from the other function
2535          */
2536         i40e_vsi_kill_vlan(vsi, vid);
2537
2538         clear_bit(vid, vsi->active_vlans);
2539
2540         return 0;
2541 }
2542
2543 /**
2544  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2545  * @vsi: the vsi being brought back up
2546  **/
2547 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2548 {
2549         u16 vid;
2550
2551         if (!vsi->netdev)
2552                 return;
2553
2554         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2555
2556         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2557                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2558                                      vid);
2559 }
2560
2561 /**
2562  * i40e_vsi_add_pvid - Add pvid for the VSI
2563  * @vsi: the vsi being adjusted
2564  * @vid: the vlan id to set as a PVID
2565  **/
2566 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2567 {
2568         struct i40e_vsi_context ctxt;
2569         i40e_status ret;
2570
2571         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2572         vsi->info.pvid = cpu_to_le16(vid);
2573         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2574                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2575                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2576
2577         ctxt.seid = vsi->seid;
2578         ctxt.info = vsi->info;
2579         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2580         if (ret) {
2581                 dev_info(&vsi->back->pdev->dev,
2582                          "add pvid failed, err %s aq_err %s\n",
2583                          i40e_stat_str(&vsi->back->hw, ret),
2584                          i40e_aq_str(&vsi->back->hw,
2585                                      vsi->back->hw.aq.asq_last_status));
2586                 return -ENOENT;
2587         }
2588
2589         return 0;
2590 }
2591
2592 /**
2593  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2594  * @vsi: the vsi being adjusted
2595  *
2596  * Just use the vlan_rx_register() service to put it back to normal
2597  **/
2598 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2599 {
2600         i40e_vlan_stripping_disable(vsi);
2601
2602         vsi->info.pvid = 0;
2603 }
2604
2605 /**
2606  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2607  * @vsi: ptr to the VSI
2608  *
2609  * If this function returns with an error, then it's possible one or
2610  * more of the rings is populated (while the rest are not).  It is the
2611  * callers duty to clean those orphaned rings.
2612  *
2613  * Return 0 on success, negative on failure
2614  **/
2615 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2616 {
2617         int i, err = 0;
2618
2619         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2620                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2621
2622         return err;
2623 }
2624
2625 /**
2626  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2627  * @vsi: ptr to the VSI
2628  *
2629  * Free VSI's transmit software resources
2630  **/
2631 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2632 {
2633         int i;
2634
2635         if (!vsi->tx_rings)
2636                 return;
2637
2638         for (i = 0; i < vsi->num_queue_pairs; i++)
2639                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2640                         i40e_free_tx_resources(vsi->tx_rings[i]);
2641 }
2642
2643 /**
2644  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2645  * @vsi: ptr to the VSI
2646  *
2647  * If this function returns with an error, then it's possible one or
2648  * more of the rings is populated (while the rest are not).  It is the
2649  * callers duty to clean those orphaned rings.
2650  *
2651  * Return 0 on success, negative on failure
2652  **/
2653 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2654 {
2655         int i, err = 0;
2656
2657         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2658                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2659 #ifdef I40E_FCOE
2660         i40e_fcoe_setup_ddp_resources(vsi);
2661 #endif
2662         return err;
2663 }
2664
2665 /**
2666  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2667  * @vsi: ptr to the VSI
2668  *
2669  * Free all receive software resources
2670  **/
2671 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2672 {
2673         int i;
2674
2675         if (!vsi->rx_rings)
2676                 return;
2677
2678         for (i = 0; i < vsi->num_queue_pairs; i++)
2679                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2680                         i40e_free_rx_resources(vsi->rx_rings[i]);
2681 #ifdef I40E_FCOE
2682         i40e_fcoe_free_ddp_resources(vsi);
2683 #endif
2684 }
2685
2686 /**
2687  * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
2688  * @ring: The Tx ring to configure
2689  *
2690  * This enables/disables XPS for a given Tx descriptor ring
2691  * based on the TCs enabled for the VSI that ring belongs to.
2692  **/
2693 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
2694 {
2695         struct i40e_vsi *vsi = ring->vsi;
2696         cpumask_var_t mask;
2697
2698         if (!ring->q_vector || !ring->netdev)
2699                 return;
2700
2701         /* Single TC mode enable XPS */
2702         if (vsi->tc_config.numtc <= 1) {
2703                 if (!test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2704                         netif_set_xps_queue(ring->netdev,
2705                                             &ring->q_vector->affinity_mask,
2706                                             ring->queue_index);
2707         } else if (alloc_cpumask_var(&mask, GFP_KERNEL)) {
2708                 /* Disable XPS to allow selection based on TC */
2709                 bitmap_zero(cpumask_bits(mask), nr_cpumask_bits);
2710                 netif_set_xps_queue(ring->netdev, mask, ring->queue_index);
2711                 free_cpumask_var(mask);
2712         }
2713
2714         /* schedule our worker thread which will take care of
2715          * applying the new filter changes
2716          */
2717         i40e_service_event_schedule(vsi->back);
2718 }
2719
2720 /**
2721  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2722  * @ring: The Tx ring to configure
2723  *
2724  * Configure the Tx descriptor ring in the HMC context.
2725  **/
2726 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2727 {
2728         struct i40e_vsi *vsi = ring->vsi;
2729         u16 pf_q = vsi->base_queue + ring->queue_index;
2730         struct i40e_hw *hw = &vsi->back->hw;
2731         struct i40e_hmc_obj_txq tx_ctx;
2732         i40e_status err = 0;
2733         u32 qtx_ctl = 0;
2734
2735         /* some ATR related tx ring init */
2736         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2737                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2738                 ring->atr_count = 0;
2739         } else {
2740                 ring->atr_sample_rate = 0;
2741         }
2742
2743         /* configure XPS */
2744         i40e_config_xps_tx_ring(ring);
2745
2746         /* clear the context structure first */
2747         memset(&tx_ctx, 0, sizeof(tx_ctx));
2748
2749         tx_ctx.new_context = 1;
2750         tx_ctx.base = (ring->dma / 128);
2751         tx_ctx.qlen = ring->count;
2752         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2753                                                I40E_FLAG_FD_ATR_ENABLED));
2754 #ifdef I40E_FCOE
2755         tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2756 #endif
2757         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2758         /* FDIR VSI tx ring can still use RS bit and writebacks */
2759         if (vsi->type != I40E_VSI_FDIR)
2760                 tx_ctx.head_wb_ena = 1;
2761         tx_ctx.head_wb_addr = ring->dma +
2762                               (ring->count * sizeof(struct i40e_tx_desc));
2763
2764         /* As part of VSI creation/update, FW allocates certain
2765          * Tx arbitration queue sets for each TC enabled for
2766          * the VSI. The FW returns the handles to these queue
2767          * sets as part of the response buffer to Add VSI,
2768          * Update VSI, etc. AQ commands. It is expected that
2769          * these queue set handles be associated with the Tx
2770          * queues by the driver as part of the TX queue context
2771          * initialization. This has to be done regardless of
2772          * DCB as by default everything is mapped to TC0.
2773          */
2774         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2775         tx_ctx.rdylist_act = 0;
2776
2777         /* clear the context in the HMC */
2778         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2779         if (err) {
2780                 dev_info(&vsi->back->pdev->dev,
2781                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2782                          ring->queue_index, pf_q, err);
2783                 return -ENOMEM;
2784         }
2785
2786         /* set the context in the HMC */
2787         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2788         if (err) {
2789                 dev_info(&vsi->back->pdev->dev,
2790                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2791                          ring->queue_index, pf_q, err);
2792                 return -ENOMEM;
2793         }
2794
2795         /* Now associate this queue with this PCI function */
2796         if (vsi->type == I40E_VSI_VMDQ2) {
2797                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2798                 qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
2799                            I40E_QTX_CTL_VFVM_INDX_MASK;
2800         } else {
2801                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2802         }
2803
2804         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2805                     I40E_QTX_CTL_PF_INDX_MASK);
2806         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2807         i40e_flush(hw);
2808
2809         /* cache tail off for easier writes later */
2810         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2811
2812         return 0;
2813 }
2814
2815 /**
2816  * i40e_configure_rx_ring - Configure a receive ring context
2817  * @ring: The Rx ring to configure
2818  *
2819  * Configure the Rx descriptor ring in the HMC context.
2820  **/
2821 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2822 {
2823         struct i40e_vsi *vsi = ring->vsi;
2824         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2825         u16 pf_q = vsi->base_queue + ring->queue_index;
2826         struct i40e_hw *hw = &vsi->back->hw;
2827         struct i40e_hmc_obj_rxq rx_ctx;
2828         i40e_status err = 0;
2829
2830         ring->state = 0;
2831
2832         /* clear the context structure first */
2833         memset(&rx_ctx, 0, sizeof(rx_ctx));
2834
2835         ring->rx_buf_len = vsi->rx_buf_len;
2836         ring->rx_hdr_len = vsi->rx_hdr_len;
2837
2838         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2839         rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
2840
2841         rx_ctx.base = (ring->dma / 128);
2842         rx_ctx.qlen = ring->count;
2843
2844         if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
2845                 set_ring_16byte_desc_enabled(ring);
2846                 rx_ctx.dsize = 0;
2847         } else {
2848                 rx_ctx.dsize = 1;
2849         }
2850
2851         rx_ctx.dtype = vsi->dtype;
2852         if (vsi->dtype) {
2853                 set_ring_ps_enabled(ring);
2854                 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
2855                                   I40E_RX_SPLIT_IP      |
2856                                   I40E_RX_SPLIT_TCP_UDP |
2857                                   I40E_RX_SPLIT_SCTP;
2858         } else {
2859                 rx_ctx.hsplit_0 = 0;
2860         }
2861
2862         rx_ctx.rxmax = min_t(u16, vsi->max_frame,
2863                                   (chain_len * ring->rx_buf_len));
2864         if (hw->revision_id == 0)
2865                 rx_ctx.lrxqthresh = 0;
2866         else
2867                 rx_ctx.lrxqthresh = 2;
2868         rx_ctx.crcstrip = 1;
2869         rx_ctx.l2tsel = 1;
2870         /* this controls whether VLAN is stripped from inner headers */
2871         rx_ctx.showiv = 0;
2872 #ifdef I40E_FCOE
2873         rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2874 #endif
2875         /* set the prefena field to 1 because the manual says to */
2876         rx_ctx.prefena = 1;
2877
2878         /* clear the context in the HMC */
2879         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2880         if (err) {
2881                 dev_info(&vsi->back->pdev->dev,
2882                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2883                          ring->queue_index, pf_q, err);
2884                 return -ENOMEM;
2885         }
2886
2887         /* set the context in the HMC */
2888         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2889         if (err) {
2890                 dev_info(&vsi->back->pdev->dev,
2891                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2892                          ring->queue_index, pf_q, err);
2893                 return -ENOMEM;
2894         }
2895
2896         /* cache tail for quicker writes, and clear the reg before use */
2897         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2898         writel(0, ring->tail);
2899
2900         if (ring_is_ps_enabled(ring)) {
2901                 i40e_alloc_rx_headers(ring);
2902                 i40e_alloc_rx_buffers_ps(ring, I40E_DESC_UNUSED(ring));
2903         } else {
2904                 i40e_alloc_rx_buffers_1buf(ring, I40E_DESC_UNUSED(ring));
2905         }
2906
2907         return 0;
2908 }
2909
2910 /**
2911  * i40e_vsi_configure_tx - Configure the VSI for Tx
2912  * @vsi: VSI structure describing this set of rings and resources
2913  *
2914  * Configure the Tx VSI for operation.
2915  **/
2916 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2917 {
2918         int err = 0;
2919         u16 i;
2920
2921         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2922                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2923
2924         return err;
2925 }
2926
2927 /**
2928  * i40e_vsi_configure_rx - Configure the VSI for Rx
2929  * @vsi: the VSI being configured
2930  *
2931  * Configure the Rx VSI for operation.
2932  **/
2933 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2934 {
2935         int err = 0;
2936         u16 i;
2937
2938         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2939                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2940                                + ETH_FCS_LEN + VLAN_HLEN;
2941         else
2942                 vsi->max_frame = I40E_RXBUFFER_2048;
2943
2944         /* figure out correct receive buffer length */
2945         switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2946                                     I40E_FLAG_RX_PS_ENABLED)) {
2947         case I40E_FLAG_RX_1BUF_ENABLED:
2948                 vsi->rx_hdr_len = 0;
2949                 vsi->rx_buf_len = vsi->max_frame;
2950                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2951                 break;
2952         case I40E_FLAG_RX_PS_ENABLED:
2953                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2954                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2955                 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2956                 break;
2957         default:
2958                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2959                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2960                 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2961                 break;
2962         }
2963
2964 #ifdef I40E_FCOE
2965         /* setup rx buffer for FCoE */
2966         if ((vsi->type == I40E_VSI_FCOE) &&
2967             (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
2968                 vsi->rx_hdr_len = 0;
2969                 vsi->rx_buf_len = I40E_RXBUFFER_3072;
2970                 vsi->max_frame = I40E_RXBUFFER_3072;
2971                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2972         }
2973
2974 #endif /* I40E_FCOE */
2975         /* round up for the chip's needs */
2976         vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
2977                                 BIT_ULL(I40E_RXQ_CTX_HBUFF_SHIFT));
2978         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2979                                 BIT_ULL(I40E_RXQ_CTX_DBUFF_SHIFT));
2980
2981         /* set up individual rings */
2982         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2983                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
2984
2985         return err;
2986 }
2987
2988 /**
2989  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
2990  * @vsi: ptr to the VSI
2991  **/
2992 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
2993 {
2994         struct i40e_ring *tx_ring, *rx_ring;
2995         u16 qoffset, qcount;
2996         int i, n;
2997
2998         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
2999                 /* Reset the TC information */
3000                 for (i = 0; i < vsi->num_queue_pairs; i++) {
3001                         rx_ring = vsi->rx_rings[i];
3002                         tx_ring = vsi->tx_rings[i];
3003                         rx_ring->dcb_tc = 0;
3004                         tx_ring->dcb_tc = 0;
3005                 }
3006         }
3007
3008         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
3009                 if (!(vsi->tc_config.enabled_tc & BIT_ULL(n)))
3010                         continue;
3011
3012                 qoffset = vsi->tc_config.tc_info[n].qoffset;
3013                 qcount = vsi->tc_config.tc_info[n].qcount;
3014                 for (i = qoffset; i < (qoffset + qcount); i++) {
3015                         rx_ring = vsi->rx_rings[i];
3016                         tx_ring = vsi->tx_rings[i];
3017                         rx_ring->dcb_tc = n;
3018                         tx_ring->dcb_tc = n;
3019                 }
3020         }
3021 }
3022
3023 /**
3024  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
3025  * @vsi: ptr to the VSI
3026  **/
3027 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
3028 {
3029         if (vsi->netdev)
3030                 i40e_set_rx_mode(vsi->netdev);
3031 }
3032
3033 /**
3034  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
3035  * @vsi: Pointer to the targeted VSI
3036  *
3037  * This function replays the hlist on the hw where all the SB Flow Director
3038  * filters were saved.
3039  **/
3040 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
3041 {
3042         struct i40e_fdir_filter *filter;
3043         struct i40e_pf *pf = vsi->back;
3044         struct hlist_node *node;
3045
3046         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
3047                 return;
3048
3049         hlist_for_each_entry_safe(filter, node,
3050                                   &pf->fdir_filter_list, fdir_node) {
3051                 i40e_add_del_fdir(vsi, filter, true);
3052         }
3053 }
3054
3055 /**
3056  * i40e_vsi_configure - Set up the VSI for action
3057  * @vsi: the VSI being configured
3058  **/
3059 static int i40e_vsi_configure(struct i40e_vsi *vsi)
3060 {
3061         int err;
3062
3063         i40e_set_vsi_rx_mode(vsi);
3064         i40e_restore_vlan(vsi);
3065         i40e_vsi_config_dcb_rings(vsi);
3066         err = i40e_vsi_configure_tx(vsi);
3067         if (!err)
3068                 err = i40e_vsi_configure_rx(vsi);
3069
3070         return err;
3071 }
3072
3073 /**
3074  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
3075  * @vsi: the VSI being configured
3076  **/
3077 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
3078 {
3079         struct i40e_pf *pf = vsi->back;
3080         struct i40e_hw *hw = &pf->hw;
3081         u16 vector;
3082         int i, q;
3083         u32 qp;
3084
3085         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
3086          * and PFINT_LNKLSTn registers, e.g.:
3087          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
3088          */
3089         qp = vsi->base_queue;
3090         vector = vsi->base_vector;
3091         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
3092                 struct i40e_q_vector *q_vector = vsi->q_vectors[i];
3093
3094                 q_vector->itr_countdown = ITR_COUNTDOWN_START;
3095                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
3096                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
3097                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
3098                      q_vector->rx.itr);
3099                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
3100                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
3101                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
3102                      q_vector->tx.itr);
3103                 wr32(hw, I40E_PFINT_RATEN(vector - 1),
3104                      INTRL_USEC_TO_REG(vsi->int_rate_limit));
3105
3106                 /* Linked list for the queuepairs assigned to this vector */
3107                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
3108                 for (q = 0; q < q_vector->num_ringpairs; q++) {
3109                         u32 val;
3110
3111                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
3112                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
3113                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
3114                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
3115                               (I40E_QUEUE_TYPE_TX
3116                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
3117
3118                         wr32(hw, I40E_QINT_RQCTL(qp), val);
3119
3120                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
3121                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
3122                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
3123                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
3124                               (I40E_QUEUE_TYPE_RX
3125                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3126
3127                         /* Terminate the linked list */
3128                         if (q == (q_vector->num_ringpairs - 1))
3129                                 val |= (I40E_QUEUE_END_OF_LIST
3130                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3131
3132                         wr32(hw, I40E_QINT_TQCTL(qp), val);
3133                         qp++;
3134                 }
3135         }
3136
3137         i40e_flush(hw);
3138 }
3139
3140 /**
3141  * i40e_enable_misc_int_causes - enable the non-queue interrupts
3142  * @hw: ptr to the hardware info
3143  **/
3144 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
3145 {
3146         struct i40e_hw *hw = &pf->hw;
3147         u32 val;
3148
3149         /* clear things first */
3150         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
3151         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
3152
3153         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
3154               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
3155               I40E_PFINT_ICR0_ENA_GRST_MASK          |
3156               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
3157               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
3158               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
3159               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
3160               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3161
3162         if (pf->flags & I40E_FLAG_IWARP_ENABLED)
3163                 val |= I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3164
3165         if (pf->flags & I40E_FLAG_PTP)
3166                 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3167
3168         wr32(hw, I40E_PFINT_ICR0_ENA, val);
3169
3170         /* SW_ITR_IDX = 0, but don't change INTENA */
3171         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
3172                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
3173
3174         /* OTHER_ITR_IDX = 0 */
3175         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
3176 }
3177
3178 /**
3179  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
3180  * @vsi: the VSI being configured
3181  **/
3182 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
3183 {
3184         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3185         struct i40e_pf *pf = vsi->back;
3186         struct i40e_hw *hw = &pf->hw;
3187         u32 val;
3188
3189         /* set the ITR configuration */
3190         q_vector->itr_countdown = ITR_COUNTDOWN_START;
3191         q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
3192         q_vector->rx.latency_range = I40E_LOW_LATENCY;
3193         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
3194         q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
3195         q_vector->tx.latency_range = I40E_LOW_LATENCY;
3196         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
3197
3198         i40e_enable_misc_int_causes(pf);
3199
3200         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
3201         wr32(hw, I40E_PFINT_LNKLST0, 0);
3202
3203         /* Associate the queue pair to the vector and enable the queue int */
3204         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
3205               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
3206               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3207
3208         wr32(hw, I40E_QINT_RQCTL(0), val);
3209
3210         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
3211               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3212               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3213
3214         wr32(hw, I40E_QINT_TQCTL(0), val);
3215         i40e_flush(hw);
3216 }
3217
3218 /**
3219  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
3220  * @pf: board private structure
3221  **/
3222 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
3223 {
3224         struct i40e_hw *hw = &pf->hw;
3225
3226         wr32(hw, I40E_PFINT_DYN_CTL0,
3227              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
3228         i40e_flush(hw);
3229 }
3230
3231 /**
3232  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
3233  * @pf: board private structure
3234  **/
3235 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
3236 {
3237         struct i40e_hw *hw = &pf->hw;
3238         u32 val;
3239
3240         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
3241               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
3242               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
3243
3244         wr32(hw, I40E_PFINT_DYN_CTL0, val);
3245         i40e_flush(hw);
3246 }
3247
3248 /**
3249  * i40e_irq_dynamic_disable - Disable default interrupt generation settings
3250  * @vsi: pointer to a vsi
3251  * @vector: disable a particular Hw Interrupt vector
3252  **/
3253 void i40e_irq_dynamic_disable(struct i40e_vsi *vsi, int vector)
3254 {
3255         struct i40e_pf *pf = vsi->back;
3256         struct i40e_hw *hw = &pf->hw;
3257         u32 val;
3258
3259         val = I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT;
3260         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
3261         i40e_flush(hw);
3262 }
3263
3264 /**
3265  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
3266  * @irq: interrupt number
3267  * @data: pointer to a q_vector
3268  **/
3269 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
3270 {
3271         struct i40e_q_vector *q_vector = data;
3272
3273         if (!q_vector->tx.ring && !q_vector->rx.ring)
3274                 return IRQ_HANDLED;
3275
3276         napi_schedule_irqoff(&q_vector->napi);
3277
3278         return IRQ_HANDLED;
3279 }
3280
3281 /**
3282  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
3283  * @vsi: the VSI being configured
3284  * @basename: name for the vector
3285  *
3286  * Allocates MSI-X vectors and requests interrupts from the kernel.
3287  **/
3288 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
3289 {
3290         int q_vectors = vsi->num_q_vectors;
3291         struct i40e_pf *pf = vsi->back;
3292         int base = vsi->base_vector;
3293         int rx_int_idx = 0;
3294         int tx_int_idx = 0;
3295         int vector, err;
3296
3297         for (vector = 0; vector < q_vectors; vector++) {
3298                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
3299
3300                 if (q_vector->tx.ring && q_vector->rx.ring) {
3301                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3302                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
3303                         tx_int_idx++;
3304                 } else if (q_vector->rx.ring) {
3305                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3306                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
3307                 } else if (q_vector->tx.ring) {
3308                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3309                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
3310                 } else {
3311                         /* skip this unused q_vector */
3312                         continue;
3313                 }
3314                 err = request_irq(pf->msix_entries[base + vector].vector,
3315                                   vsi->irq_handler,
3316                                   0,
3317                                   q_vector->name,
3318                                   q_vector);
3319                 if (err) {
3320                         dev_info(&pf->pdev->dev,
3321                                  "MSIX request_irq failed, error: %d\n", err);
3322                         goto free_queue_irqs;
3323                 }
3324                 /* assign the mask for this irq */
3325                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3326                                       &q_vector->affinity_mask);
3327         }
3328
3329         vsi->irqs_ready = true;
3330         return 0;
3331
3332 free_queue_irqs:
3333         while (vector) {
3334                 vector--;
3335                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3336                                       NULL);
3337                 free_irq(pf->msix_entries[base + vector].vector,
3338                          &(vsi->q_vectors[vector]));
3339         }
3340         return err;
3341 }
3342
3343 /**
3344  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3345  * @vsi: the VSI being un-configured
3346  **/
3347 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3348 {
3349         struct i40e_pf *pf = vsi->back;
3350         struct i40e_hw *hw = &pf->hw;
3351         int base = vsi->base_vector;
3352         int i;
3353
3354         for (i = 0; i < vsi->num_queue_pairs; i++) {
3355                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3356                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3357         }
3358
3359         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3360                 for (i = vsi->base_vector;
3361                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3362                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3363
3364                 i40e_flush(hw);
3365                 for (i = 0; i < vsi->num_q_vectors; i++)
3366                         synchronize_irq(pf->msix_entries[i + base].vector);
3367         } else {
3368                 /* Legacy and MSI mode - this stops all interrupt handling */
3369                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3370                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3371                 i40e_flush(hw);
3372                 synchronize_irq(pf->pdev->irq);
3373         }
3374 }
3375
3376 /**
3377  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3378  * @vsi: the VSI being configured
3379  **/
3380 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3381 {
3382         struct i40e_pf *pf = vsi->back;
3383         int i;
3384
3385         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3386                 for (i = 0; i < vsi->num_q_vectors; i++)
3387                         i40e_irq_dynamic_enable(vsi, i);
3388         } else {
3389                 i40e_irq_dynamic_enable_icr0(pf);
3390         }
3391
3392         i40e_flush(&pf->hw);
3393         return 0;
3394 }
3395
3396 /**
3397  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3398  * @pf: board private structure
3399  **/
3400 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3401 {
3402         /* Disable ICR 0 */
3403         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3404         i40e_flush(&pf->hw);
3405 }
3406
3407 /**
3408  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3409  * @irq: interrupt number
3410  * @data: pointer to a q_vector
3411  *
3412  * This is the handler used for all MSI/Legacy interrupts, and deals
3413  * with both queue and non-queue interrupts.  This is also used in
3414  * MSIX mode to handle the non-queue interrupts.
3415  **/
3416 static irqreturn_t i40e_intr(int irq, void *data)
3417 {
3418         struct i40e_pf *pf = (struct i40e_pf *)data;
3419         struct i40e_hw *hw = &pf->hw;
3420         irqreturn_t ret = IRQ_NONE;
3421         u32 icr0, icr0_remaining;
3422         u32 val, ena_mask;
3423
3424         icr0 = rd32(hw, I40E_PFINT_ICR0);
3425         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3426
3427         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3428         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3429                 goto enable_intr;
3430
3431         /* if interrupt but no bits showing, must be SWINT */
3432         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3433             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3434                 pf->sw_int_count++;
3435
3436         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
3437             (ena_mask & I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK)) {
3438                 ena_mask &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3439                 icr0 &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3440                 dev_info(&pf->pdev->dev, "cleared PE_CRITERR\n");
3441         }
3442
3443         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3444         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3445                 struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
3446                 struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3447
3448                 /* temporarily disable queue cause for NAPI processing */
3449                 u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
3450
3451                 qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
3452                 wr32(hw, I40E_QINT_RQCTL(0), qval);
3453
3454                 qval = rd32(hw, I40E_QINT_TQCTL(0));
3455                 qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
3456                 wr32(hw, I40E_QINT_TQCTL(0), qval);
3457
3458                 if (!test_bit(__I40E_DOWN, &pf->state))
3459                         napi_schedule_irqoff(&q_vector->napi);
3460         }
3461
3462         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3463                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3464                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3465         }
3466
3467         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3468                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3469                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3470         }
3471
3472         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3473                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3474                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3475         }
3476
3477         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3478                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3479                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3480                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3481                 val = rd32(hw, I40E_GLGEN_RSTAT);
3482                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3483                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3484                 if (val == I40E_RESET_CORER) {
3485                         pf->corer_count++;
3486                 } else if (val == I40E_RESET_GLOBR) {
3487                         pf->globr_count++;
3488                 } else if (val == I40E_RESET_EMPR) {
3489                         pf->empr_count++;
3490                         set_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state);
3491                 }
3492         }
3493
3494         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3495                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3496                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3497                 dev_info(&pf->pdev->dev, "HMC error info 0x%x, HMC error data 0x%x\n",
3498                          rd32(hw, I40E_PFHMC_ERRORINFO),
3499                          rd32(hw, I40E_PFHMC_ERRORDATA));
3500         }
3501
3502         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3503                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3504
3505                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3506                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3507                         i40e_ptp_tx_hwtstamp(pf);
3508                 }
3509         }
3510
3511         /* If a critical error is pending we have no choice but to reset the
3512          * device.
3513          * Report and mask out any remaining unexpected interrupts.
3514          */
3515         icr0_remaining = icr0 & ena_mask;
3516         if (icr0_remaining) {
3517                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3518                          icr0_remaining);
3519                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3520                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3521                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3522                         dev_info(&pf->pdev->dev, "device will be reset\n");
3523                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3524                         i40e_service_event_schedule(pf);
3525                 }
3526                 ena_mask &= ~icr0_remaining;
3527         }
3528         ret = IRQ_HANDLED;
3529
3530 enable_intr:
3531         /* re-enable interrupt causes */
3532         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3533         if (!test_bit(__I40E_DOWN, &pf->state)) {
3534                 i40e_service_event_schedule(pf);
3535                 i40e_irq_dynamic_enable_icr0(pf);
3536         }
3537
3538         return ret;
3539 }
3540
3541 /**
3542  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3543  * @tx_ring:  tx ring to clean
3544  * @budget:   how many cleans we're allowed
3545  *
3546  * Returns true if there's any budget left (e.g. the clean is finished)
3547  **/
3548 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3549 {
3550         struct i40e_vsi *vsi = tx_ring->vsi;
3551         u16 i = tx_ring->next_to_clean;
3552         struct i40e_tx_buffer *tx_buf;
3553         struct i40e_tx_desc *tx_desc;
3554
3555         tx_buf = &tx_ring->tx_bi[i];
3556         tx_desc = I40E_TX_DESC(tx_ring, i);
3557         i -= tx_ring->count;
3558
3559         do {
3560                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3561
3562                 /* if next_to_watch is not set then there is no work pending */
3563                 if (!eop_desc)
3564                         break;
3565
3566                 /* prevent any other reads prior to eop_desc */
3567                 read_barrier_depends();
3568
3569                 /* if the descriptor isn't done, no work yet to do */
3570                 if (!(eop_desc->cmd_type_offset_bsz &
3571                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3572                         break;
3573
3574                 /* clear next_to_watch to prevent false hangs */
3575                 tx_buf->next_to_watch = NULL;
3576
3577                 tx_desc->buffer_addr = 0;
3578                 tx_desc->cmd_type_offset_bsz = 0;
3579                 /* move past filter desc */
3580                 tx_buf++;
3581                 tx_desc++;
3582                 i++;
3583                 if (unlikely(!i)) {
3584                         i -= tx_ring->count;
3585                         tx_buf = tx_ring->tx_bi;
3586                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3587                 }
3588                 /* unmap skb header data */
3589                 dma_unmap_single(tx_ring->dev,
3590                                  dma_unmap_addr(tx_buf, dma),
3591                                  dma_unmap_len(tx_buf, len),
3592                                  DMA_TO_DEVICE);
3593                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3594                         kfree(tx_buf->raw_buf);
3595
3596                 tx_buf->raw_buf = NULL;
3597                 tx_buf->tx_flags = 0;
3598                 tx_buf->next_to_watch = NULL;
3599                 dma_unmap_len_set(tx_buf, len, 0);
3600                 tx_desc->buffer_addr = 0;
3601                 tx_desc->cmd_type_offset_bsz = 0;
3602
3603                 /* move us past the eop_desc for start of next FD desc */
3604                 tx_buf++;
3605                 tx_desc++;
3606                 i++;
3607                 if (unlikely(!i)) {
3608                         i -= tx_ring->count;
3609                         tx_buf = tx_ring->tx_bi;
3610                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3611                 }
3612
3613                 /* update budget accounting */
3614                 budget--;
3615         } while (likely(budget));
3616
3617         i += tx_ring->count;
3618         tx_ring->next_to_clean = i;
3619
3620         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED)
3621                 i40e_irq_dynamic_enable(vsi, tx_ring->q_vector->v_idx);
3622
3623         return budget > 0;
3624 }
3625
3626 /**
3627  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3628  * @irq: interrupt number
3629  * @data: pointer to a q_vector
3630  **/
3631 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3632 {
3633         struct i40e_q_vector *q_vector = data;
3634         struct i40e_vsi *vsi;
3635
3636         if (!q_vector->tx.ring)
3637                 return IRQ_HANDLED;
3638
3639         vsi = q_vector->tx.ring->vsi;
3640         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3641
3642         return IRQ_HANDLED;
3643 }
3644
3645 /**
3646  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3647  * @vsi: the VSI being configured
3648  * @v_idx: vector index
3649  * @qp_idx: queue pair index
3650  **/
3651 static void i40e_map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3652 {
3653         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3654         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3655         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3656
3657         tx_ring->q_vector = q_vector;
3658         tx_ring->next = q_vector->tx.ring;
3659         q_vector->tx.ring = tx_ring;
3660         q_vector->tx.count++;
3661
3662         rx_ring->q_vector = q_vector;
3663         rx_ring->next = q_vector->rx.ring;
3664         q_vector->rx.ring = rx_ring;
3665         q_vector->rx.count++;
3666 }
3667
3668 /**
3669  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3670  * @vsi: the VSI being configured
3671  *
3672  * This function maps descriptor rings to the queue-specific vectors
3673  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3674  * one vector per queue pair, but on a constrained vector budget, we
3675  * group the queue pairs as "efficiently" as possible.
3676  **/
3677 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3678 {
3679         int qp_remaining = vsi->num_queue_pairs;
3680         int q_vectors = vsi->num_q_vectors;
3681         int num_ringpairs;
3682         int v_start = 0;
3683         int qp_idx = 0;
3684
3685         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3686          * group them so there are multiple queues per vector.
3687          * It is also important to go through all the vectors available to be
3688          * sure that if we don't use all the vectors, that the remaining vectors
3689          * are cleared. This is especially important when decreasing the
3690          * number of queues in use.
3691          */
3692         for (; v_start < q_vectors; v_start++) {
3693                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3694
3695                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3696
3697                 q_vector->num_ringpairs = num_ringpairs;
3698
3699                 q_vector->rx.count = 0;
3700                 q_vector->tx.count = 0;
3701                 q_vector->rx.ring = NULL;
3702                 q_vector->tx.ring = NULL;
3703
3704                 while (num_ringpairs--) {
3705                         i40e_map_vector_to_qp(vsi, v_start, qp_idx);
3706                         qp_idx++;
3707                         qp_remaining--;
3708                 }
3709         }
3710 }
3711
3712 /**
3713  * i40e_vsi_request_irq - Request IRQ from the OS
3714  * @vsi: the VSI being configured
3715  * @basename: name for the vector
3716  **/
3717 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3718 {
3719         struct i40e_pf *pf = vsi->back;
3720         int err;
3721
3722         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3723                 err = i40e_vsi_request_irq_msix(vsi, basename);
3724         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3725                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3726                                   pf->int_name, pf);
3727         else
3728                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3729                                   pf->int_name, pf);
3730
3731         if (err)
3732                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3733
3734         return err;
3735 }
3736
3737 #ifdef CONFIG_NET_POLL_CONTROLLER
3738 /**
3739  * i40e_netpoll - A Polling 'interrupt'handler
3740  * @netdev: network interface device structure
3741  *
3742  * This is used by netconsole to send skbs without having to re-enable
3743  * interrupts.  It's not called while the normal interrupt routine is executing.
3744  **/
3745 #ifdef I40E_FCOE
3746 void i40e_netpoll(struct net_device *netdev)
3747 #else
3748 static void i40e_netpoll(struct net_device *netdev)
3749 #endif
3750 {
3751         struct i40e_netdev_priv *np = netdev_priv(netdev);
3752         struct i40e_vsi *vsi = np->vsi;
3753         struct i40e_pf *pf = vsi->back;
3754         int i;
3755
3756         /* if interface is down do nothing */
3757         if (test_bit(__I40E_DOWN, &vsi->state))
3758                 return;
3759
3760         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3761                 for (i = 0; i < vsi->num_q_vectors; i++)
3762                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3763         } else {
3764                 i40e_intr(pf->pdev->irq, netdev);
3765         }
3766 }
3767 #endif
3768
3769 /**
3770  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3771  * @pf: the PF being configured
3772  * @pf_q: the PF queue
3773  * @enable: enable or disable state of the queue
3774  *
3775  * This routine will wait for the given Tx queue of the PF to reach the
3776  * enabled or disabled state.
3777  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3778  * multiple retries; else will return 0 in case of success.
3779  **/
3780 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3781 {
3782         int i;
3783         u32 tx_reg;
3784
3785         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3786                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3787                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3788                         break;
3789
3790                 usleep_range(10, 20);
3791         }
3792         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3793                 return -ETIMEDOUT;
3794
3795         return 0;
3796 }
3797
3798 /**
3799  * i40e_vsi_control_tx - Start or stop a VSI's rings
3800  * @vsi: the VSI being configured
3801  * @enable: start or stop the rings
3802  **/
3803 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3804 {
3805         struct i40e_pf *pf = vsi->back;
3806         struct i40e_hw *hw = &pf->hw;
3807         int i, j, pf_q, ret = 0;
3808         u32 tx_reg;
3809
3810         pf_q = vsi->base_queue;
3811         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3812
3813                 /* warn the TX unit of coming changes */
3814                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3815                 if (!enable)
3816                         usleep_range(10, 20);
3817
3818                 for (j = 0; j < 50; j++) {
3819                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3820                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3821                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3822                                 break;
3823                         usleep_range(1000, 2000);
3824                 }
3825                 /* Skip if the queue is already in the requested state */
3826                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3827                         continue;
3828
3829                 /* turn on/off the queue */
3830                 if (enable) {
3831                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3832                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3833                 } else {
3834                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3835                 }
3836
3837                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3838                 /* No waiting for the Tx queue to disable */
3839                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3840                         continue;
3841
3842                 /* wait for the change to finish */
3843                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3844                 if (ret) {
3845                         dev_info(&pf->pdev->dev,
3846                                  "VSI seid %d Tx ring %d %sable timeout\n",
3847                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3848                         break;
3849                 }
3850         }
3851
3852         if (hw->revision_id == 0)
3853                 mdelay(50);
3854         return ret;
3855 }
3856
3857 /**
3858  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
3859  * @pf: the PF being configured
3860  * @pf_q: the PF queue
3861  * @enable: enable or disable state of the queue
3862  *
3863  * This routine will wait for the given Rx queue of the PF to reach the
3864  * enabled or disabled state.
3865  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3866  * multiple retries; else will return 0 in case of success.
3867  **/
3868 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3869 {
3870         int i;
3871         u32 rx_reg;
3872
3873         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3874                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
3875                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3876                         break;
3877
3878                 usleep_range(10, 20);
3879         }
3880         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3881                 return -ETIMEDOUT;
3882
3883         return 0;
3884 }
3885
3886 /**
3887  * i40e_vsi_control_rx - Start or stop a VSI's rings
3888  * @vsi: the VSI being configured
3889  * @enable: start or stop the rings
3890  **/
3891 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3892 {
3893         struct i40e_pf *pf = vsi->back;
3894         struct i40e_hw *hw = &pf->hw;
3895         int i, j, pf_q, ret = 0;
3896         u32 rx_reg;
3897
3898         pf_q = vsi->base_queue;
3899         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3900                 for (j = 0; j < 50; j++) {
3901                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3902                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3903                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3904                                 break;
3905                         usleep_range(1000, 2000);
3906                 }
3907
3908                 /* Skip if the queue is already in the requested state */
3909                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3910                         continue;
3911
3912                 /* turn on/off the queue */
3913                 if (enable)
3914                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3915                 else
3916                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3917                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3918
3919                 /* wait for the change to finish */
3920                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
3921                 if (ret) {
3922                         dev_info(&pf->pdev->dev,
3923                                  "VSI seid %d Rx ring %d %sable timeout\n",
3924                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3925                         break;
3926                 }
3927         }
3928
3929         return ret;
3930 }
3931
3932 /**
3933  * i40e_vsi_control_rings - Start or stop a VSI's rings
3934  * @vsi: the VSI being configured
3935  * @enable: start or stop the rings
3936  **/
3937 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3938 {
3939         int ret = 0;
3940
3941         /* do rx first for enable and last for disable */
3942         if (request) {
3943                 ret = i40e_vsi_control_rx(vsi, request);
3944                 if (ret)
3945                         return ret;
3946                 ret = i40e_vsi_control_tx(vsi, request);
3947         } else {
3948                 /* Ignore return value, we need to shutdown whatever we can */
3949                 i40e_vsi_control_tx(vsi, request);
3950                 i40e_vsi_control_rx(vsi, request);
3951         }
3952
3953         return ret;
3954 }
3955
3956 /**
3957  * i40e_vsi_free_irq - Free the irq association with the OS
3958  * @vsi: the VSI being configured
3959  **/
3960 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3961 {
3962         struct i40e_pf *pf = vsi->back;
3963         struct i40e_hw *hw = &pf->hw;
3964         int base = vsi->base_vector;
3965         u32 val, qp;
3966         int i;
3967
3968         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3969                 if (!vsi->q_vectors)
3970                         return;
3971
3972                 if (!vsi->irqs_ready)
3973                         return;
3974
3975                 vsi->irqs_ready = false;
3976                 for (i = 0; i < vsi->num_q_vectors; i++) {
3977                         u16 vector = i + base;
3978
3979                         /* free only the irqs that were actually requested */
3980                         if (!vsi->q_vectors[i] ||
3981                             !vsi->q_vectors[i]->num_ringpairs)
3982                                 continue;
3983
3984                         /* clear the affinity_mask in the IRQ descriptor */
3985                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
3986                                               NULL);
3987                         free_irq(pf->msix_entries[vector].vector,
3988                                  vsi->q_vectors[i]);
3989
3990                         /* Tear down the interrupt queue link list
3991                          *
3992                          * We know that they come in pairs and always
3993                          * the Rx first, then the Tx.  To clear the
3994                          * link list, stick the EOL value into the
3995                          * next_q field of the registers.
3996                          */
3997                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
3998                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3999                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4000                         val |= I40E_QUEUE_END_OF_LIST
4001                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4002                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
4003
4004                         while (qp != I40E_QUEUE_END_OF_LIST) {
4005                                 u32 next;
4006
4007                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4008
4009                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4010                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4011                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4012                                          I40E_QINT_RQCTL_INTEVENT_MASK);
4013
4014                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4015                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4016
4017                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4018
4019                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4020
4021                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
4022                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
4023
4024                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4025                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4026                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4027                                          I40E_QINT_TQCTL_INTEVENT_MASK);
4028
4029                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4030                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4031
4032                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4033                                 qp = next;
4034                         }
4035                 }
4036         } else {
4037                 free_irq(pf->pdev->irq, pf);
4038
4039                 val = rd32(hw, I40E_PFINT_LNKLST0);
4040                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4041                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4042                 val |= I40E_QUEUE_END_OF_LIST
4043                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
4044                 wr32(hw, I40E_PFINT_LNKLST0, val);
4045
4046                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4047                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4048                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4049                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4050                          I40E_QINT_RQCTL_INTEVENT_MASK);
4051
4052                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4053                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4054
4055                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4056
4057                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4058
4059                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4060                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4061                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4062                          I40E_QINT_TQCTL_INTEVENT_MASK);
4063
4064                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4065                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4066
4067                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4068         }
4069 }
4070
4071 /**
4072  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
4073  * @vsi: the VSI being configured
4074  * @v_idx: Index of vector to be freed
4075  *
4076  * This function frees the memory allocated to the q_vector.  In addition if
4077  * NAPI is enabled it will delete any references to the NAPI struct prior
4078  * to freeing the q_vector.
4079  **/
4080 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
4081 {
4082         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
4083         struct i40e_ring *ring;
4084
4085         if (!q_vector)
4086                 return;
4087
4088         /* disassociate q_vector from rings */
4089         i40e_for_each_ring(ring, q_vector->tx)
4090                 ring->q_vector = NULL;
4091
4092         i40e_for_each_ring(ring, q_vector->rx)
4093                 ring->q_vector = NULL;
4094
4095         /* only VSI w/ an associated netdev is set up w/ NAPI */
4096         if (vsi->netdev)
4097                 netif_napi_del(&q_vector->napi);
4098
4099         vsi->q_vectors[v_idx] = NULL;
4100
4101         kfree_rcu(q_vector, rcu);
4102 }
4103
4104 /**
4105  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
4106  * @vsi: the VSI being un-configured
4107  *
4108  * This frees the memory allocated to the q_vectors and
4109  * deletes references to the NAPI struct.
4110  **/
4111 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
4112 {
4113         int v_idx;
4114
4115         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
4116                 i40e_free_q_vector(vsi, v_idx);
4117 }
4118
4119 /**
4120  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
4121  * @pf: board private structure
4122  **/
4123 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
4124 {
4125         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
4126         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4127                 pci_disable_msix(pf->pdev);
4128                 kfree(pf->msix_entries);
4129                 pf->msix_entries = NULL;
4130                 kfree(pf->irq_pile);
4131                 pf->irq_pile = NULL;
4132         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
4133                 pci_disable_msi(pf->pdev);
4134         }
4135         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
4136 }
4137
4138 /**
4139  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
4140  * @pf: board private structure
4141  *
4142  * We go through and clear interrupt specific resources and reset the structure
4143  * to pre-load conditions
4144  **/
4145 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
4146 {
4147         int i;
4148
4149         i40e_stop_misc_vector(pf);
4150         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4151                 synchronize_irq(pf->msix_entries[0].vector);
4152                 free_irq(pf->msix_entries[0].vector, pf);
4153         }
4154
4155         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
4156         for (i = 0; i < pf->num_alloc_vsi; i++)
4157                 if (pf->vsi[i])
4158                         i40e_vsi_free_q_vectors(pf->vsi[i]);
4159         i40e_reset_interrupt_capability(pf);
4160 }
4161
4162 /**
4163  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
4164  * @vsi: the VSI being configured
4165  **/
4166 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
4167 {
4168         int q_idx;
4169
4170         if (!vsi->netdev)
4171                 return;
4172
4173         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4174                 napi_enable(&vsi->q_vectors[q_idx]->napi);
4175 }
4176
4177 /**
4178  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
4179  * @vsi: the VSI being configured
4180  **/
4181 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
4182 {
4183         int q_idx;
4184
4185         if (!vsi->netdev)
4186                 return;
4187
4188         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4189                 napi_disable(&vsi->q_vectors[q_idx]->napi);
4190 }
4191
4192 /**
4193  * i40e_vsi_close - Shut down a VSI
4194  * @vsi: the vsi to be quelled
4195  **/
4196 static void i40e_vsi_close(struct i40e_vsi *vsi)
4197 {
4198         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
4199                 i40e_down(vsi);
4200         i40e_vsi_free_irq(vsi);
4201         i40e_vsi_free_tx_resources(vsi);
4202         i40e_vsi_free_rx_resources(vsi);
4203         vsi->current_netdev_flags = 0;
4204 }
4205
4206 /**
4207  * i40e_quiesce_vsi - Pause a given VSI
4208  * @vsi: the VSI being paused
4209  **/
4210 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
4211 {
4212         if (test_bit(__I40E_DOWN, &vsi->state))
4213                 return;
4214
4215         /* No need to disable FCoE VSI when Tx suspended */
4216         if ((test_bit(__I40E_PORT_TX_SUSPENDED, &vsi->back->state)) &&
4217             vsi->type == I40E_VSI_FCOE) {
4218                 dev_dbg(&vsi->back->pdev->dev,
4219                          "VSI seid %d skipping FCoE VSI disable\n", vsi->seid);
4220                 return;
4221         }
4222
4223         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
4224         if (vsi->netdev && netif_running(vsi->netdev))
4225                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
4226         else
4227                 i40e_vsi_close(vsi);
4228 }
4229
4230 /**
4231  * i40e_unquiesce_vsi - Resume a given VSI
4232  * @vsi: the VSI being resumed
4233  **/
4234 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
4235 {
4236         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
4237                 return;
4238
4239         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
4240         if (vsi->netdev && netif_running(vsi->netdev))
4241                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
4242         else
4243                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
4244 }
4245
4246 /**
4247  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
4248  * @pf: the PF
4249  **/
4250 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
4251 {
4252         int v;
4253
4254         for (v = 0; v < pf->num_alloc_vsi; v++) {
4255                 if (pf->vsi[v])
4256                         i40e_quiesce_vsi(pf->vsi[v]);
4257         }
4258 }
4259
4260 /**
4261  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
4262  * @pf: the PF
4263  **/
4264 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
4265 {
4266         int v;
4267
4268         for (v = 0; v < pf->num_alloc_vsi; v++) {
4269                 if (pf->vsi[v])
4270                         i40e_unquiesce_vsi(pf->vsi[v]);
4271         }
4272 }
4273
4274 #ifdef CONFIG_I40E_DCB
4275 /**
4276  * i40e_vsi_wait_txq_disabled - Wait for VSI's queues to be disabled
4277  * @vsi: the VSI being configured
4278  *
4279  * This function waits for the given VSI's Tx queues to be disabled.
4280  **/
4281 static int i40e_vsi_wait_txq_disabled(struct i40e_vsi *vsi)
4282 {
4283         struct i40e_pf *pf = vsi->back;
4284         int i, pf_q, ret;
4285
4286         pf_q = vsi->base_queue;
4287         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4288                 /* Check and wait for the disable status of the queue */
4289                 ret = i40e_pf_txq_wait(pf, pf_q, false);
4290                 if (ret) {
4291                         dev_info(&pf->pdev->dev,
4292                                  "VSI seid %d Tx ring %d disable timeout\n",
4293                                  vsi->seid, pf_q);
4294                         return ret;
4295                 }
4296         }
4297
4298         return 0;
4299 }
4300
4301 /**
4302  * i40e_pf_wait_txq_disabled - Wait for all queues of PF VSIs to be disabled
4303  * @pf: the PF
4304  *
4305  * This function waits for the Tx queues to be in disabled state for all the
4306  * VSIs that are managed by this PF.
4307  **/
4308 static int i40e_pf_wait_txq_disabled(struct i40e_pf *pf)
4309 {
4310         int v, ret = 0;
4311
4312         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4313                 /* No need to wait for FCoE VSI queues */
4314                 if (pf->vsi[v] && pf->vsi[v]->type != I40E_VSI_FCOE) {
4315                         ret = i40e_vsi_wait_txq_disabled(pf->vsi[v]);
4316                         if (ret)
4317                                 break;
4318                 }
4319         }
4320
4321         return ret;
4322 }
4323
4324 #endif
4325
4326 /**
4327  * i40e_detect_recover_hung_queue - Function to detect and recover hung_queue
4328  * @q_idx: TX queue number
4329  * @vsi: Pointer to VSI struct
4330  *
4331  * This function checks specified queue for given VSI. Detects hung condition.
4332  * Sets hung bit since it is two step process. Before next run of service task
4333  * if napi_poll runs, it reset 'hung' bit for respective q_vector. If not,
4334  * hung condition remain unchanged and during subsequent run, this function
4335  * issues SW interrupt to recover from hung condition.
4336  **/
4337 static void i40e_detect_recover_hung_queue(int q_idx, struct i40e_vsi *vsi)
4338 {
4339         struct i40e_ring *tx_ring = NULL;
4340         struct i40e_pf  *pf;
4341         u32 head, val, tx_pending;
4342         int i;
4343
4344         pf = vsi->back;
4345
4346         /* now that we have an index, find the tx_ring struct */
4347         for (i = 0; i < vsi->num_queue_pairs; i++) {
4348                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
4349                         if (q_idx == vsi->tx_rings[i]->queue_index) {
4350                                 tx_ring = vsi->tx_rings[i];
4351                                 break;
4352                         }
4353                 }
4354         }
4355
4356         if (!tx_ring)
4357                 return;
4358
4359         /* Read interrupt register */
4360         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4361                 val = rd32(&pf->hw,
4362                            I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
4363                                                tx_ring->vsi->base_vector - 1));
4364         else
4365                 val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
4366
4367         /* Bail out if interrupts are disabled because napi_poll
4368          * execution in-progress or will get scheduled soon.
4369          * napi_poll cleans TX and RX queues and updates 'next_to_clean'.
4370          */
4371         if (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK))
4372                 return;
4373
4374         head = i40e_get_head(tx_ring);
4375
4376         tx_pending = i40e_get_tx_pending(tx_ring);
4377
4378         /* HW is done executing descriptors, updated HEAD write back,
4379          * but SW hasn't processed those descriptors. If interrupt is
4380          * not generated from this point ON, it could result into
4381          * dev_watchdog detecting timeout on those netdev_queue,
4382          * hence proactively trigger SW interrupt.
4383          */
4384         if (tx_pending) {
4385                 /* NAPI Poll didn't run and clear since it was set */
4386                 if (test_and_clear_bit(I40E_Q_VECTOR_HUNG_DETECT,
4387                                        &tx_ring->q_vector->hung_detected)) {
4388                         netdev_info(vsi->netdev, "VSI_seid %d, Hung TX queue %d, tx_pending: %d, NTC:0x%x, HWB: 0x%x, NTU: 0x%x, TAIL: 0x%x\n",
4389                                     vsi->seid, q_idx, tx_pending,
4390                                     tx_ring->next_to_clean, head,
4391                                     tx_ring->next_to_use,
4392                                     readl(tx_ring->tail));
4393                         netdev_info(vsi->netdev, "VSI_seid %d, Issuing force_wb for TX queue %d, Interrupt Reg: 0x%x\n",
4394                                     vsi->seid, q_idx, val);
4395                         i40e_force_wb(vsi, tx_ring->q_vector);
4396                 } else {
4397                         /* First Chance - detected possible hung */
4398                         set_bit(I40E_Q_VECTOR_HUNG_DETECT,
4399                                 &tx_ring->q_vector->hung_detected);
4400                 }
4401         }
4402 }
4403
4404 /**
4405  * i40e_detect_recover_hung - Function to detect and recover hung_queues
4406  * @pf:  pointer to PF struct
4407  *
4408  * LAN VSI has netdev and netdev has TX queues. This function is to check
4409  * each of those TX queues if they are hung, trigger recovery by issuing
4410  * SW interrupt.
4411  **/
4412 static void i40e_detect_recover_hung(struct i40e_pf *pf)
4413 {
4414         struct net_device *netdev;
4415         struct i40e_vsi *vsi;
4416         int i;
4417
4418         /* Only for LAN VSI */
4419         vsi = pf->vsi[pf->lan_vsi];
4420
4421         if (!vsi)
4422                 return;
4423
4424         /* Make sure, VSI state is not DOWN/RECOVERY_PENDING */
4425         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
4426             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
4427                 return;
4428
4429         /* Make sure type is MAIN VSI */
4430         if (vsi->type != I40E_VSI_MAIN)
4431                 return;
4432
4433         netdev = vsi->netdev;
4434         if (!netdev)
4435                 return;
4436
4437         /* Bail out if netif_carrier is not OK */
4438         if (!netif_carrier_ok(netdev))
4439                 return;
4440
4441         /* Go thru' TX queues for netdev */
4442         for (i = 0; i < netdev->num_tx_queues; i++) {
4443                 struct netdev_queue *q;
4444
4445                 q = netdev_get_tx_queue(netdev, i);
4446                 if (q)
4447                         i40e_detect_recover_hung_queue(i, vsi);
4448         }
4449 }
4450
4451 /**
4452  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
4453  * @pf: pointer to PF
4454  *
4455  * Get TC map for ISCSI PF type that will include iSCSI TC
4456  * and LAN TC.
4457  **/
4458 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
4459 {
4460         struct i40e_dcb_app_priority_table app;
4461         struct i40e_hw *hw = &pf->hw;
4462         u8 enabled_tc = 1; /* TC0 is always enabled */
4463         u8 tc, i;
4464         /* Get the iSCSI APP TLV */
4465         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4466
4467         for (i = 0; i < dcbcfg->numapps; i++) {
4468                 app = dcbcfg->app[i];
4469                 if (app.selector == I40E_APP_SEL_TCPIP &&
4470                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
4471                         tc = dcbcfg->etscfg.prioritytable[app.priority];
4472                         enabled_tc |= BIT(tc);
4473                         break;
4474                 }
4475         }
4476
4477         return enabled_tc;
4478 }
4479
4480 /**
4481  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
4482  * @dcbcfg: the corresponding DCBx configuration structure
4483  *
4484  * Return the number of TCs from given DCBx configuration
4485  **/
4486 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
4487 {
4488         u8 num_tc = 0;
4489         int i;
4490
4491         /* Scan the ETS Config Priority Table to find
4492          * traffic class enabled for a given priority
4493          * and use the traffic class index to get the
4494          * number of traffic classes enabled
4495          */
4496         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4497                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
4498                         num_tc = dcbcfg->etscfg.prioritytable[i];
4499         }
4500
4501         /* Traffic class index starts from zero so
4502          * increment to return the actual count
4503          */
4504         return num_tc + 1;
4505 }
4506
4507 /**
4508  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
4509  * @dcbcfg: the corresponding DCBx configuration structure
4510  *
4511  * Query the current DCB configuration and return the number of
4512  * traffic classes enabled from the given DCBX config
4513  **/
4514 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
4515 {
4516         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
4517         u8 enabled_tc = 1;
4518         u8 i;
4519
4520         for (i = 0; i < num_tc; i++)
4521                 enabled_tc |= BIT(i);
4522
4523         return enabled_tc;
4524 }
4525
4526 /**
4527  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
4528  * @pf: PF being queried
4529  *
4530  * Return number of traffic classes enabled for the given PF
4531  **/
4532 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
4533 {
4534         struct i40e_hw *hw = &pf->hw;
4535         u8 i, enabled_tc;
4536         u8 num_tc = 0;
4537         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4538
4539         /* If DCB is not enabled then always in single TC */
4540         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4541                 return 1;
4542
4543         /* SFP mode will be enabled for all TCs on port */
4544         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4545                 return i40e_dcb_get_num_tc(dcbcfg);
4546
4547         /* MFP mode return count of enabled TCs for this PF */
4548         if (pf->hw.func_caps.iscsi)
4549                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
4550         else
4551                 return 1; /* Only TC0 */
4552
4553         /* At least have TC0 */
4554         enabled_tc = (enabled_tc ? enabled_tc : 0x1);
4555         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4556                 if (enabled_tc & BIT(i))
4557                         num_tc++;
4558         }
4559         return num_tc;
4560 }
4561
4562 /**
4563  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
4564  * @pf: PF being queried
4565  *
4566  * Return a bitmap for first enabled traffic class for this PF.
4567  **/
4568 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
4569 {
4570         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
4571         u8 i = 0;
4572
4573         if (!enabled_tc)
4574                 return 0x1; /* TC0 */
4575
4576         /* Find the first enabled TC */
4577         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4578                 if (enabled_tc & BIT(i))
4579                         break;
4580         }
4581
4582         return BIT(i);
4583 }
4584
4585 /**
4586  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4587  * @pf: PF being queried
4588  *
4589  * Return a bitmap for enabled traffic classes for this PF.
4590  **/
4591 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4592 {
4593         /* If DCB is not enabled for this PF then just return default TC */
4594         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4595                 return i40e_pf_get_default_tc(pf);
4596
4597         /* SFP mode we want PF to be enabled for all TCs */
4598         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4599                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4600
4601         /* MFP enabled and iSCSI PF type */
4602         if (pf->hw.func_caps.iscsi)
4603                 return i40e_get_iscsi_tc_map(pf);
4604         else
4605                 return i40e_pf_get_default_tc(pf);
4606 }
4607
4608 /**
4609  * i40e_vsi_get_bw_info - Query VSI BW Information
4610  * @vsi: the VSI being queried
4611  *
4612  * Returns 0 on success, negative value on failure
4613  **/
4614 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4615 {
4616         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4617         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4618         struct i40e_pf *pf = vsi->back;
4619         struct i40e_hw *hw = &pf->hw;
4620         i40e_status ret;
4621         u32 tc_bw_max;
4622         int i;
4623
4624         /* Get the VSI level BW configuration */
4625         ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4626         if (ret) {
4627                 dev_info(&pf->pdev->dev,
4628                          "couldn't get PF vsi bw config, err %s aq_err %s\n",
4629                          i40e_stat_str(&pf->hw, ret),
4630                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4631                 return -EINVAL;
4632         }
4633
4634         /* Get the VSI level BW configuration per TC */
4635         ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4636                                                NULL);
4637         if (ret) {
4638                 dev_info(&pf->pdev->dev,
4639                          "couldn't get PF vsi ets bw config, err %s aq_err %s\n",
4640                          i40e_stat_str(&pf->hw, ret),
4641                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4642                 return -EINVAL;
4643         }
4644
4645         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4646                 dev_info(&pf->pdev->dev,
4647                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4648                          bw_config.tc_valid_bits,
4649                          bw_ets_config.tc_valid_bits);
4650                 /* Still continuing */
4651         }
4652
4653         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4654         vsi->bw_max_quanta = bw_config.max_bw;
4655         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4656                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4657         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4658                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4659                 vsi->bw_ets_limit_credits[i] =
4660                                         le16_to_cpu(bw_ets_config.credits[i]);
4661                 /* 3 bits out of 4 for each TC */
4662                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4663         }
4664
4665         return 0;
4666 }
4667
4668 /**
4669  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4670  * @vsi: the VSI being configured
4671  * @enabled_tc: TC bitmap
4672  * @bw_credits: BW shared credits per TC
4673  *
4674  * Returns 0 on success, negative value on failure
4675  **/
4676 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4677                                        u8 *bw_share)
4678 {
4679         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4680         i40e_status ret;
4681         int i;
4682
4683         bw_data.tc_valid_bits = enabled_tc;
4684         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4685                 bw_data.tc_bw_credits[i] = bw_share[i];
4686
4687         ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4688                                        NULL);
4689         if (ret) {
4690                 dev_info(&vsi->back->pdev->dev,
4691                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4692                          vsi->back->hw.aq.asq_last_status);
4693                 return -EINVAL;
4694         }
4695
4696         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4697                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4698
4699         return 0;
4700 }
4701
4702 /**
4703  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4704  * @vsi: the VSI being configured
4705  * @enabled_tc: TC map to be enabled
4706  *
4707  **/
4708 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4709 {
4710         struct net_device *netdev = vsi->netdev;
4711         struct i40e_pf *pf = vsi->back;
4712         struct i40e_hw *hw = &pf->hw;
4713         u8 netdev_tc = 0;
4714         int i;
4715         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4716
4717         if (!netdev)
4718                 return;
4719
4720         if (!enabled_tc) {
4721                 netdev_reset_tc(netdev);
4722                 return;
4723         }
4724
4725         /* Set up actual enabled TCs on the VSI */
4726         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4727                 return;
4728
4729         /* set per TC queues for the VSI */
4730         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4731                 /* Only set TC queues for enabled tcs
4732                  *
4733                  * e.g. For a VSI that has TC0 and TC3 enabled the
4734                  * enabled_tc bitmap would be 0x00001001; the driver
4735                  * will set the numtc for netdev as 2 that will be
4736                  * referenced by the netdev layer as TC 0 and 1.
4737                  */
4738                 if (vsi->tc_config.enabled_tc & BIT(i))
4739                         netdev_set_tc_queue(netdev,
4740                                         vsi->tc_config.tc_info[i].netdev_tc,
4741                                         vsi->tc_config.tc_info[i].qcount,
4742                                         vsi->tc_config.tc_info[i].qoffset);
4743         }
4744
4745         /* Assign UP2TC map for the VSI */
4746         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4747                 /* Get the actual TC# for the UP */
4748                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4749                 /* Get the mapped netdev TC# for the UP */
4750                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4751                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4752         }
4753 }
4754
4755 /**
4756  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4757  * @vsi: the VSI being configured
4758  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4759  **/
4760 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4761                                       struct i40e_vsi_context *ctxt)
4762 {
4763         /* copy just the sections touched not the entire info
4764          * since not all sections are valid as returned by
4765          * update vsi params
4766          */
4767         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4768         memcpy(&vsi->info.queue_mapping,
4769                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4770         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4771                sizeof(vsi->info.tc_mapping));
4772 }
4773
4774 /**
4775  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4776  * @vsi: VSI to be configured
4777  * @enabled_tc: TC bitmap
4778  *
4779  * This configures a particular VSI for TCs that are mapped to the
4780  * given TC bitmap. It uses default bandwidth share for TCs across
4781  * VSIs to configure TC for a particular VSI.
4782  *
4783  * NOTE:
4784  * It is expected that the VSI queues have been quisced before calling
4785  * this function.
4786  **/
4787 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4788 {
4789         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4790         struct i40e_vsi_context ctxt;
4791         int ret = 0;
4792         int i;
4793
4794         /* Check if enabled_tc is same as existing or new TCs */
4795         if (vsi->tc_config.enabled_tc == enabled_tc)
4796                 return ret;
4797
4798         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4799         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4800                 if (enabled_tc & BIT(i))
4801                         bw_share[i] = 1;
4802         }
4803
4804         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4805         if (ret) {
4806                 dev_info(&vsi->back->pdev->dev,
4807                          "Failed configuring TC map %d for VSI %d\n",
4808                          enabled_tc, vsi->seid);
4809                 goto out;
4810         }
4811
4812         /* Update Queue Pairs Mapping for currently enabled UPs */
4813         ctxt.seid = vsi->seid;
4814         ctxt.pf_num = vsi->back->hw.pf_id;
4815         ctxt.vf_num = 0;
4816         ctxt.uplink_seid = vsi->uplink_seid;
4817         ctxt.info = vsi->info;
4818         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4819
4820         /* Update the VSI after updating the VSI queue-mapping information */
4821         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4822         if (ret) {
4823                 dev_info(&vsi->back->pdev->dev,
4824                          "Update vsi tc config failed, err %s aq_err %s\n",
4825                          i40e_stat_str(&vsi->back->hw, ret),
4826                          i40e_aq_str(&vsi->back->hw,
4827                                      vsi->back->hw.aq.asq_last_status));
4828                 goto out;
4829         }
4830         /* update the local VSI info with updated queue map */
4831         i40e_vsi_update_queue_map(vsi, &ctxt);
4832         vsi->info.valid_sections = 0;
4833
4834         /* Update current VSI BW information */
4835         ret = i40e_vsi_get_bw_info(vsi);
4836         if (ret) {
4837                 dev_info(&vsi->back->pdev->dev,
4838                          "Failed updating vsi bw info, err %s aq_err %s\n",
4839                          i40e_stat_str(&vsi->back->hw, ret),
4840                          i40e_aq_str(&vsi->back->hw,
4841                                      vsi->back->hw.aq.asq_last_status));
4842                 goto out;
4843         }
4844
4845         /* Update the netdev TC setup */
4846         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4847 out:
4848         return ret;
4849 }
4850
4851 /**
4852  * i40e_veb_config_tc - Configure TCs for given VEB
4853  * @veb: given VEB
4854  * @enabled_tc: TC bitmap
4855  *
4856  * Configures given TC bitmap for VEB (switching) element
4857  **/
4858 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4859 {
4860         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4861         struct i40e_pf *pf = veb->pf;
4862         int ret = 0;
4863         int i;
4864
4865         /* No TCs or already enabled TCs just return */
4866         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4867                 return ret;
4868
4869         bw_data.tc_valid_bits = enabled_tc;
4870         /* bw_data.absolute_credits is not set (relative) */
4871
4872         /* Enable ETS TCs with equal BW Share for now */
4873         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4874                 if (enabled_tc & BIT(i))
4875                         bw_data.tc_bw_share_credits[i] = 1;
4876         }
4877
4878         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4879                                                    &bw_data, NULL);
4880         if (ret) {
4881                 dev_info(&pf->pdev->dev,
4882                          "VEB bw config failed, err %s aq_err %s\n",
4883                          i40e_stat_str(&pf->hw, ret),
4884                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4885                 goto out;
4886         }
4887
4888         /* Update the BW information */
4889         ret = i40e_veb_get_bw_info(veb);
4890         if (ret) {
4891                 dev_info(&pf->pdev->dev,
4892                          "Failed getting veb bw config, err %s aq_err %s\n",
4893                          i40e_stat_str(&pf->hw, ret),
4894                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4895         }
4896
4897 out:
4898         return ret;
4899 }
4900
4901 #ifdef CONFIG_I40E_DCB
4902 /**
4903  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4904  * @pf: PF struct
4905  *
4906  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4907  * the caller would've quiesce all the VSIs before calling
4908  * this function
4909  **/
4910 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4911 {
4912         u8 tc_map = 0;
4913         int ret;
4914         u8 v;
4915
4916         /* Enable the TCs available on PF to all VEBs */
4917         tc_map = i40e_pf_get_tc_map(pf);
4918         for (v = 0; v < I40E_MAX_VEB; v++) {
4919                 if (!pf->veb[v])
4920                         continue;
4921                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4922                 if (ret) {
4923                         dev_info(&pf->pdev->dev,
4924                                  "Failed configuring TC for VEB seid=%d\n",
4925                                  pf->veb[v]->seid);
4926                         /* Will try to configure as many components */
4927                 }
4928         }
4929
4930         /* Update each VSI */
4931         for (v = 0; v < pf->num_alloc_vsi; v++) {
4932                 if (!pf->vsi[v])
4933                         continue;
4934
4935                 /* - Enable all TCs for the LAN VSI
4936 #ifdef I40E_FCOE
4937                  * - For FCoE VSI only enable the TC configured
4938                  *   as per the APP TLV
4939 #endif
4940                  * - For all others keep them at TC0 for now
4941                  */
4942                 if (v == pf->lan_vsi)
4943                         tc_map = i40e_pf_get_tc_map(pf);
4944                 else
4945                         tc_map = i40e_pf_get_default_tc(pf);
4946 #ifdef I40E_FCOE
4947                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
4948                         tc_map = i40e_get_fcoe_tc_map(pf);
4949 #endif /* #ifdef I40E_FCOE */
4950
4951                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4952                 if (ret) {
4953                         dev_info(&pf->pdev->dev,
4954                                  "Failed configuring TC for VSI seid=%d\n",
4955                                  pf->vsi[v]->seid);
4956                         /* Will try to configure as many components */
4957                 } else {
4958                         /* Re-configure VSI vectors based on updated TC map */
4959                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
4960                         if (pf->vsi[v]->netdev)
4961                                 i40e_dcbnl_set_all(pf->vsi[v]);
4962                 }
4963         }
4964 }
4965
4966 /**
4967  * i40e_resume_port_tx - Resume port Tx
4968  * @pf: PF struct
4969  *
4970  * Resume a port's Tx and issue a PF reset in case of failure to
4971  * resume.
4972  **/
4973 static int i40e_resume_port_tx(struct i40e_pf *pf)
4974 {
4975         struct i40e_hw *hw = &pf->hw;
4976         int ret;
4977
4978         ret = i40e_aq_resume_port_tx(hw, NULL);
4979         if (ret) {
4980                 dev_info(&pf->pdev->dev,
4981                          "Resume Port Tx failed, err %s aq_err %s\n",
4982                           i40e_stat_str(&pf->hw, ret),
4983                           i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4984                 /* Schedule PF reset to recover */
4985                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
4986                 i40e_service_event_schedule(pf);
4987         }
4988
4989         return ret;
4990 }
4991
4992 /**
4993  * i40e_init_pf_dcb - Initialize DCB configuration
4994  * @pf: PF being configured
4995  *
4996  * Query the current DCB configuration and cache it
4997  * in the hardware structure
4998  **/
4999 static int i40e_init_pf_dcb(struct i40e_pf *pf)
5000 {
5001         struct i40e_hw *hw = &pf->hw;
5002         int err = 0;
5003
5004         /* Do not enable DCB for SW1 and SW2 images even if the FW is capable */
5005         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
5006             (pf->hw.aq.fw_maj_ver < 4))
5007                 goto out;
5008
5009         /* Get the initial DCB configuration */
5010         err = i40e_init_dcb(hw);
5011         if (!err) {
5012                 /* Device/Function is not DCBX capable */
5013                 if ((!hw->func_caps.dcb) ||
5014                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
5015                         dev_info(&pf->pdev->dev,
5016                                  "DCBX offload is not supported or is disabled for this PF.\n");
5017
5018                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
5019                                 goto out;
5020
5021                 } else {
5022                         /* When status is not DISABLED then DCBX in FW */
5023                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
5024                                        DCB_CAP_DCBX_VER_IEEE;
5025
5026                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
5027                         /* Enable DCB tagging only when more than one TC */
5028                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5029                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5030                         dev_dbg(&pf->pdev->dev,
5031                                 "DCBX offload is supported for this PF.\n");
5032                 }
5033         } else {
5034                 dev_info(&pf->pdev->dev,
5035                          "Query for DCB configuration failed, err %s aq_err %s\n",
5036                          i40e_stat_str(&pf->hw, err),
5037                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5038         }
5039
5040 out:
5041         return err;
5042 }
5043 #endif /* CONFIG_I40E_DCB */
5044 #define SPEED_SIZE 14
5045 #define FC_SIZE 8
5046 /**
5047  * i40e_print_link_message - print link up or down
5048  * @vsi: the VSI for which link needs a message
5049  */
5050 void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
5051 {
5052         char *speed = "Unknown";
5053         char *fc = "Unknown";
5054
5055         if (vsi->current_isup == isup)
5056                 return;
5057         vsi->current_isup = isup;
5058         if (!isup) {
5059                 netdev_info(vsi->netdev, "NIC Link is Down\n");
5060                 return;
5061         }
5062
5063         /* Warn user if link speed on NPAR enabled partition is not at
5064          * least 10GB
5065          */
5066         if (vsi->back->hw.func_caps.npar_enable &&
5067             (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
5068              vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
5069                 netdev_warn(vsi->netdev,
5070                             "The partition detected link speed that is less than 10Gbps\n");
5071
5072         switch (vsi->back->hw.phy.link_info.link_speed) {
5073         case I40E_LINK_SPEED_40GB:
5074                 speed = "40 G";
5075                 break;
5076         case I40E_LINK_SPEED_20GB:
5077                 speed = "20 G";
5078                 break;
5079         case I40E_LINK_SPEED_10GB:
5080                 speed = "10 G";
5081                 break;
5082         case I40E_LINK_SPEED_1GB:
5083                 speed = "1000 M";
5084                 break;
5085         case I40E_LINK_SPEED_100MB:
5086                 speed = "100 M";
5087                 break;
5088         default:
5089                 break;
5090         }
5091
5092         switch (vsi->back->hw.fc.current_mode) {
5093         case I40E_FC_FULL:
5094                 fc = "RX/TX";
5095                 break;
5096         case I40E_FC_TX_PAUSE:
5097                 fc = "TX";
5098                 break;
5099         case I40E_FC_RX_PAUSE:
5100                 fc = "RX";
5101                 break;
5102         default:
5103                 fc = "None";
5104                 break;
5105         }
5106
5107         netdev_info(vsi->netdev, "NIC Link is Up %sbps Full Duplex, Flow Control: %s\n",
5108                     speed, fc);
5109 }
5110
5111 /**
5112  * i40e_up_complete - Finish the last steps of bringing up a connection
5113  * @vsi: the VSI being configured
5114  **/
5115 static int i40e_up_complete(struct i40e_vsi *vsi)
5116 {
5117         struct i40e_pf *pf = vsi->back;
5118         int err;
5119
5120         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5121                 i40e_vsi_configure_msix(vsi);
5122         else
5123                 i40e_configure_msi_and_legacy(vsi);
5124
5125         /* start rings */
5126         err = i40e_vsi_control_rings(vsi, true);
5127         if (err)
5128                 return err;
5129
5130         clear_bit(__I40E_DOWN, &vsi->state);
5131         i40e_napi_enable_all(vsi);
5132         i40e_vsi_enable_irq(vsi);
5133
5134         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
5135             (vsi->netdev)) {
5136                 i40e_print_link_message(vsi, true);
5137                 netif_tx_start_all_queues(vsi->netdev);
5138                 netif_carrier_on(vsi->netdev);
5139         } else if (vsi->netdev) {
5140                 i40e_print_link_message(vsi, false);
5141                 /* need to check for qualified module here*/
5142                 if ((pf->hw.phy.link_info.link_info &
5143                         I40E_AQ_MEDIA_AVAILABLE) &&
5144                     (!(pf->hw.phy.link_info.an_info &
5145                         I40E_AQ_QUALIFIED_MODULE)))
5146                         netdev_err(vsi->netdev,
5147                                    "the driver failed to link because an unqualified module was detected.");
5148         }
5149
5150         /* replay FDIR SB filters */
5151         if (vsi->type == I40E_VSI_FDIR) {
5152                 /* reset fd counters */
5153                 pf->fd_add_err = pf->fd_atr_cnt = 0;
5154                 if (pf->fd_tcp_rule > 0) {
5155                         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5156                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5157                                 dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
5158                         pf->fd_tcp_rule = 0;
5159                 }
5160                 i40e_fdir_filter_restore(vsi);
5161         }
5162         i40e_service_event_schedule(pf);
5163
5164         return 0;
5165 }
5166
5167 /**
5168  * i40e_vsi_reinit_locked - Reset the VSI
5169  * @vsi: the VSI being configured
5170  *
5171  * Rebuild the ring structs after some configuration
5172  * has changed, e.g. MTU size.
5173  **/
5174 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
5175 {
5176         struct i40e_pf *pf = vsi->back;
5177
5178         WARN_ON(in_interrupt());
5179         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
5180                 usleep_range(1000, 2000);
5181         i40e_down(vsi);
5182
5183         /* Give a VF some time to respond to the reset.  The
5184          * two second wait is based upon the watchdog cycle in
5185          * the VF driver.
5186          */
5187         if (vsi->type == I40E_VSI_SRIOV)
5188                 msleep(2000);
5189         i40e_up(vsi);
5190         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
5191 }
5192
5193 /**
5194  * i40e_up - Bring the connection back up after being down
5195  * @vsi: the VSI being configured
5196  **/
5197 int i40e_up(struct i40e_vsi *vsi)
5198 {
5199         int err;
5200
5201         err = i40e_vsi_configure(vsi);
5202         if (!err)
5203                 err = i40e_up_complete(vsi);
5204
5205         return err;
5206 }
5207
5208 /**
5209  * i40e_down - Shutdown the connection processing
5210  * @vsi: the VSI being stopped
5211  **/
5212 void i40e_down(struct i40e_vsi *vsi)
5213 {
5214         int i;
5215
5216         /* It is assumed that the caller of this function
5217          * sets the vsi->state __I40E_DOWN bit.
5218          */
5219         if (vsi->netdev) {
5220                 netif_carrier_off(vsi->netdev);
5221                 netif_tx_disable(vsi->netdev);
5222         }
5223         i40e_vsi_disable_irq(vsi);
5224         i40e_vsi_control_rings(vsi, false);
5225         i40e_napi_disable_all(vsi);
5226
5227         for (i = 0; i < vsi->num_queue_pairs; i++) {
5228                 i40e_clean_tx_ring(vsi->tx_rings[i]);
5229                 i40e_clean_rx_ring(vsi->rx_rings[i]);
5230         }
5231 }
5232
5233 /**
5234  * i40e_setup_tc - configure multiple traffic classes
5235  * @netdev: net device to configure
5236  * @tc: number of traffic classes to enable
5237  **/
5238 #ifdef I40E_FCOE
5239 int i40e_setup_tc(struct net_device *netdev, u8 tc)
5240 #else
5241 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
5242 #endif
5243 {
5244         struct i40e_netdev_priv *np = netdev_priv(netdev);
5245         struct i40e_vsi *vsi = np->vsi;
5246         struct i40e_pf *pf = vsi->back;
5247         u8 enabled_tc = 0;
5248         int ret = -EINVAL;
5249         int i;
5250
5251         /* Check if DCB enabled to continue */
5252         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
5253                 netdev_info(netdev, "DCB is not enabled for adapter\n");
5254                 goto exit;
5255         }
5256
5257         /* Check if MFP enabled */
5258         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
5259                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
5260                 goto exit;
5261         }
5262
5263         /* Check whether tc count is within enabled limit */
5264         if (tc > i40e_pf_get_num_tc(pf)) {
5265                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
5266                 goto exit;
5267         }
5268
5269         /* Generate TC map for number of tc requested */
5270         for (i = 0; i < tc; i++)
5271                 enabled_tc |= BIT(i);
5272
5273         /* Requesting same TC configuration as already enabled */
5274         if (enabled_tc == vsi->tc_config.enabled_tc)
5275                 return 0;
5276
5277         /* Quiesce VSI queues */
5278         i40e_quiesce_vsi(vsi);
5279
5280         /* Configure VSI for enabled TCs */
5281         ret = i40e_vsi_config_tc(vsi, enabled_tc);
5282         if (ret) {
5283                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
5284                             vsi->seid);
5285                 goto exit;
5286         }
5287
5288         /* Unquiesce VSI */
5289         i40e_unquiesce_vsi(vsi);
5290
5291 exit:
5292         return ret;
5293 }
5294
5295 /**
5296  * i40e_open - Called when a network interface is made active
5297  * @netdev: network interface device structure
5298  *
5299  * The open entry point is called when a network interface is made
5300  * active by the system (IFF_UP).  At this point all resources needed
5301  * for transmit and receive operations are allocated, the interrupt
5302  * handler is registered with the OS, the netdev watchdog subtask is
5303  * enabled, and the stack is notified that the interface is ready.
5304  *
5305  * Returns 0 on success, negative value on failure
5306  **/
5307 int i40e_open(struct net_device *netdev)
5308 {
5309         struct i40e_netdev_priv *np = netdev_priv(netdev);
5310         struct i40e_vsi *vsi = np->vsi;
5311         struct i40e_pf *pf = vsi->back;
5312         int err;
5313
5314         /* disallow open during test or if eeprom is broken */
5315         if (test_bit(__I40E_TESTING, &pf->state) ||
5316             test_bit(__I40E_BAD_EEPROM, &pf->state))
5317                 return -EBUSY;
5318
5319         netif_carrier_off(netdev);
5320
5321         err = i40e_vsi_open(vsi);
5322         if (err)
5323                 return err;
5324
5325         /* configure global TSO hardware offload settings */
5326         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
5327                                                        TCP_FLAG_FIN) >> 16);
5328         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
5329                                                        TCP_FLAG_FIN |
5330                                                        TCP_FLAG_CWR) >> 16);
5331         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
5332
5333 #ifdef CONFIG_I40E_VXLAN
5334         vxlan_get_rx_port(netdev);
5335 #endif
5336
5337         return 0;
5338 }
5339
5340 /**
5341  * i40e_vsi_open -
5342  * @vsi: the VSI to open
5343  *
5344  * Finish initialization of the VSI.
5345  *
5346  * Returns 0 on success, negative value on failure
5347  **/
5348 int i40e_vsi_open(struct i40e_vsi *vsi)
5349 {
5350         struct i40e_pf *pf = vsi->back;
5351         char int_name[I40E_INT_NAME_STR_LEN];
5352         int err;
5353
5354         /* allocate descriptors */
5355         err = i40e_vsi_setup_tx_resources(vsi);
5356         if (err)
5357                 goto err_setup_tx;
5358         err = i40e_vsi_setup_rx_resources(vsi);
5359         if (err)
5360                 goto err_setup_rx;
5361
5362         err = i40e_vsi_configure(vsi);
5363         if (err)
5364                 goto err_setup_rx;
5365
5366         if (vsi->netdev) {
5367                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
5368                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
5369                 err = i40e_vsi_request_irq(vsi, int_name);
5370                 if (err)
5371                         goto err_setup_rx;
5372
5373                 /* Notify the stack of the actual queue counts. */
5374                 err = netif_set_real_num_tx_queues(vsi->netdev,
5375                                                    vsi->num_queue_pairs);
5376                 if (err)
5377                         goto err_set_queues;
5378
5379                 err = netif_set_real_num_rx_queues(vsi->netdev,
5380                                                    vsi->num_queue_pairs);
5381                 if (err)
5382                         goto err_set_queues;
5383
5384         } else if (vsi->type == I40E_VSI_FDIR) {
5385                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
5386                          dev_driver_string(&pf->pdev->dev),
5387                          dev_name(&pf->pdev->dev));
5388                 err = i40e_vsi_request_irq(vsi, int_name);
5389
5390         } else {
5391                 err = -EINVAL;
5392                 goto err_setup_rx;
5393         }
5394
5395         err = i40e_up_complete(vsi);
5396         if (err)
5397                 goto err_up_complete;
5398
5399         return 0;
5400
5401 err_up_complete:
5402         i40e_down(vsi);
5403 err_set_queues:
5404         i40e_vsi_free_irq(vsi);
5405 err_setup_rx:
5406         i40e_vsi_free_rx_resources(vsi);
5407 err_setup_tx:
5408         i40e_vsi_free_tx_resources(vsi);
5409         if (vsi == pf->vsi[pf->lan_vsi])
5410                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
5411
5412         return err;
5413 }
5414
5415 /**
5416  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
5417  * @pf: Pointer to PF
5418  *
5419  * This function destroys the hlist where all the Flow Director
5420  * filters were saved.
5421  **/
5422 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
5423 {
5424         struct i40e_fdir_filter *filter;
5425         struct hlist_node *node2;
5426
5427         hlist_for_each_entry_safe(filter, node2,
5428                                   &pf->fdir_filter_list, fdir_node) {
5429                 hlist_del(&filter->fdir_node);
5430                 kfree(filter);
5431         }
5432         pf->fdir_pf_active_filters = 0;
5433 }
5434
5435 /**
5436  * i40e_close - Disables a network interface
5437  * @netdev: network interface device structure
5438  *
5439  * The close entry point is called when an interface is de-activated
5440  * by the OS.  The hardware is still under the driver's control, but
5441  * this netdev interface is disabled.
5442  *
5443  * Returns 0, this is not allowed to fail
5444  **/
5445 #ifdef I40E_FCOE
5446 int i40e_close(struct net_device *netdev)
5447 #else
5448 static int i40e_close(struct net_device *netdev)
5449 #endif
5450 {
5451         struct i40e_netdev_priv *np = netdev_priv(netdev);
5452         struct i40e_vsi *vsi = np->vsi;
5453
5454         i40e_vsi_close(vsi);
5455
5456         return 0;
5457 }
5458
5459 /**
5460  * i40e_do_reset - Start a PF or Core Reset sequence
5461  * @pf: board private structure
5462  * @reset_flags: which reset is requested
5463  *
5464  * The essential difference in resets is that the PF Reset
5465  * doesn't clear the packet buffers, doesn't reset the PE
5466  * firmware, and doesn't bother the other PFs on the chip.
5467  **/
5468 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
5469 {
5470         u32 val;
5471
5472         WARN_ON(in_interrupt());
5473
5474         if (i40e_check_asq_alive(&pf->hw))
5475                 i40e_vc_notify_reset(pf);
5476
5477         /* do the biggest reset indicated */
5478         if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {
5479
5480                 /* Request a Global Reset
5481                  *
5482                  * This will start the chip's countdown to the actual full
5483                  * chip reset event, and a warning interrupt to be sent
5484                  * to all PFs, including the requestor.  Our handler
5485                  * for the warning interrupt will deal with the shutdown
5486                  * and recovery of the switch setup.
5487                  */
5488                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
5489                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5490                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
5491                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5492
5493         } else if (reset_flags & BIT_ULL(__I40E_CORE_RESET_REQUESTED)) {
5494
5495                 /* Request a Core Reset
5496                  *
5497                  * Same as Global Reset, except does *not* include the MAC/PHY
5498                  */
5499                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
5500                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5501                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
5502                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5503                 i40e_flush(&pf->hw);
5504
5505         } else if (reset_flags & BIT_ULL(__I40E_PF_RESET_REQUESTED)) {
5506
5507                 /* Request a PF Reset
5508                  *
5509                  * Resets only the PF-specific registers
5510                  *
5511                  * This goes directly to the tear-down and rebuild of
5512                  * the switch, since we need to do all the recovery as
5513                  * for the Core Reset.
5514                  */
5515                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5516                 i40e_handle_reset_warning(pf);
5517
5518         } else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) {
5519                 int v;
5520
5521                 /* Find the VSI(s) that requested a re-init */
5522                 dev_info(&pf->pdev->dev,
5523                          "VSI reinit requested\n");
5524                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5525                         struct i40e_vsi *vsi = pf->vsi[v];
5526
5527                         if (vsi != NULL &&
5528                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5529                                 i40e_vsi_reinit_locked(pf->vsi[v]);
5530                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5531                         }
5532                 }
5533         } else if (reset_flags & BIT_ULL(__I40E_DOWN_REQUESTED)) {
5534                 int v;
5535
5536                 /* Find the VSI(s) that needs to be brought down */
5537                 dev_info(&pf->pdev->dev, "VSI down requested\n");
5538                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5539                         struct i40e_vsi *vsi = pf->vsi[v];
5540
5541                         if (vsi != NULL &&
5542                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5543                                 set_bit(__I40E_DOWN, &vsi->state);
5544                                 i40e_down(vsi);
5545                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5546                         }
5547                 }
5548         } else {
5549                 dev_info(&pf->pdev->dev,
5550                          "bad reset request 0x%08x\n", reset_flags);
5551         }
5552 }
5553
5554 #ifdef CONFIG_I40E_DCB
5555 /**
5556  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
5557  * @pf: board private structure
5558  * @old_cfg: current DCB config
5559  * @new_cfg: new DCB config
5560  **/
5561 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
5562                             struct i40e_dcbx_config *old_cfg,
5563                             struct i40e_dcbx_config *new_cfg)
5564 {
5565         bool need_reconfig = false;
5566
5567         /* Check if ETS configuration has changed */
5568         if (memcmp(&new_cfg->etscfg,
5569                    &old_cfg->etscfg,
5570                    sizeof(new_cfg->etscfg))) {
5571                 /* If Priority Table has changed reconfig is needed */
5572                 if (memcmp(&new_cfg->etscfg.prioritytable,
5573                            &old_cfg->etscfg.prioritytable,
5574                            sizeof(new_cfg->etscfg.prioritytable))) {
5575                         need_reconfig = true;
5576                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
5577                 }
5578
5579                 if (memcmp(&new_cfg->etscfg.tcbwtable,
5580                            &old_cfg->etscfg.tcbwtable,
5581                            sizeof(new_cfg->etscfg.tcbwtable)))
5582                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5583
5584                 if (memcmp(&new_cfg->etscfg.tsatable,
5585                            &old_cfg->etscfg.tsatable,
5586                            sizeof(new_cfg->etscfg.tsatable)))
5587                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5588         }
5589
5590         /* Check if PFC configuration has changed */
5591         if (memcmp(&new_cfg->pfc,
5592                    &old_cfg->pfc,
5593                    sizeof(new_cfg->pfc))) {
5594                 need_reconfig = true;
5595                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5596         }
5597
5598         /* Check if APP Table has changed */
5599         if (memcmp(&new_cfg->app,
5600                    &old_cfg->app,
5601                    sizeof(new_cfg->app))) {
5602                 need_reconfig = true;
5603                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5604         }
5605
5606         dev_dbg(&pf->pdev->dev, "dcb need_reconfig=%d\n", need_reconfig);
5607         return need_reconfig;
5608 }
5609
5610 /**
5611  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5612  * @pf: board private structure
5613  * @e: event info posted on ARQ
5614  **/
5615 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5616                                   struct i40e_arq_event_info *e)
5617 {
5618         struct i40e_aqc_lldp_get_mib *mib =
5619                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5620         struct i40e_hw *hw = &pf->hw;
5621         struct i40e_dcbx_config tmp_dcbx_cfg;
5622         bool need_reconfig = false;
5623         int ret = 0;
5624         u8 type;
5625
5626         /* Not DCB capable or capability disabled */
5627         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5628                 return ret;
5629
5630         /* Ignore if event is not for Nearest Bridge */
5631         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5632                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5633         dev_dbg(&pf->pdev->dev, "LLDP event mib bridge type 0x%x\n", type);
5634         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5635                 return ret;
5636
5637         /* Check MIB Type and return if event for Remote MIB update */
5638         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5639         dev_dbg(&pf->pdev->dev,
5640                 "LLDP event mib type %s\n", type ? "remote" : "local");
5641         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5642                 /* Update the remote cached instance and return */
5643                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5644                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5645                                 &hw->remote_dcbx_config);
5646                 goto exit;
5647         }
5648
5649         /* Store the old configuration */
5650         tmp_dcbx_cfg = hw->local_dcbx_config;
5651
5652         /* Reset the old DCBx configuration data */
5653         memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
5654         /* Get updated DCBX data from firmware */
5655         ret = i40e_get_dcb_config(&pf->hw);
5656         if (ret) {
5657                 dev_info(&pf->pdev->dev,
5658                          "Failed querying DCB configuration data from firmware, err %s aq_err %s\n",
5659                          i40e_stat_str(&pf->hw, ret),
5660                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5661                 goto exit;
5662         }
5663
5664         /* No change detected in DCBX configs */
5665         if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
5666                     sizeof(tmp_dcbx_cfg))) {
5667                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5668                 goto exit;
5669         }
5670
5671         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
5672                                                &hw->local_dcbx_config);
5673
5674         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
5675
5676         if (!need_reconfig)
5677                 goto exit;
5678
5679         /* Enable DCB tagging only when more than one TC */
5680         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5681                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5682         else
5683                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5684
5685         set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5686         /* Reconfiguration needed quiesce all VSIs */
5687         i40e_pf_quiesce_all_vsi(pf);
5688
5689         /* Changes in configuration update VEB/VSI */
5690         i40e_dcb_reconfigure(pf);
5691
5692         ret = i40e_resume_port_tx(pf);
5693
5694         clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5695         /* In case of error no point in resuming VSIs */
5696         if (ret)
5697                 goto exit;
5698
5699         /* Wait for the PF's Tx queues to be disabled */
5700         ret = i40e_pf_wait_txq_disabled(pf);
5701         if (ret) {
5702                 /* Schedule PF reset to recover */
5703                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5704                 i40e_service_event_schedule(pf);
5705         } else {
5706                 i40e_pf_unquiesce_all_vsi(pf);
5707         }
5708
5709 exit:
5710         return ret;
5711 }
5712 #endif /* CONFIG_I40E_DCB */
5713
5714 /**
5715  * i40e_do_reset_safe - Protected reset path for userland calls.
5716  * @pf: board private structure
5717  * @reset_flags: which reset is requested
5718  *
5719  **/
5720 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5721 {
5722         rtnl_lock();
5723         i40e_do_reset(pf, reset_flags);
5724         rtnl_unlock();
5725 }
5726
5727 /**
5728  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5729  * @pf: board private structure
5730  * @e: event info posted on ARQ
5731  *
5732  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5733  * and VF queues
5734  **/
5735 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5736                                            struct i40e_arq_event_info *e)
5737 {
5738         struct i40e_aqc_lan_overflow *data =
5739                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5740         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5741         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5742         struct i40e_hw *hw = &pf->hw;
5743         struct i40e_vf *vf;
5744         u16 vf_id;
5745
5746         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5747                 queue, qtx_ctl);
5748
5749         /* Queue belongs to VF, find the VF and issue VF reset */
5750         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5751             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5752                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5753                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5754                 vf_id -= hw->func_caps.vf_base_id;
5755                 vf = &pf->vf[vf_id];
5756                 i40e_vc_notify_vf_reset(vf);
5757                 /* Allow VF to process pending reset notification */
5758                 msleep(20);
5759                 i40e_reset_vf(vf, false);
5760         }
5761 }
5762
5763 /**
5764  * i40e_service_event_complete - Finish up the service event
5765  * @pf: board private structure
5766  **/
5767 static void i40e_service_event_complete(struct i40e_pf *pf)
5768 {
5769         WARN_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5770
5771         /* flush memory to make sure state is correct before next watchog */
5772         smp_mb__before_atomic();
5773         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5774 }
5775
5776 /**
5777  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5778  * @pf: board private structure
5779  **/
5780 u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5781 {
5782         u32 val, fcnt_prog;
5783
5784         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5785         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5786         return fcnt_prog;
5787 }
5788
5789 /**
5790  * i40e_get_current_fd_count - Get total FD filters programmed for this PF
5791  * @pf: board private structure
5792  **/
5793 u32 i40e_get_current_fd_count(struct i40e_pf *pf)
5794 {
5795         u32 val, fcnt_prog;
5796
5797         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5798         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5799                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5800                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5801         return fcnt_prog;
5802 }
5803
5804 /**
5805  * i40e_get_global_fd_count - Get total FD filters programmed on device
5806  * @pf: board private structure
5807  **/
5808 u32 i40e_get_global_fd_count(struct i40e_pf *pf)
5809 {
5810         u32 val, fcnt_prog;
5811
5812         val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
5813         fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
5814                     ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
5815                      I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
5816         return fcnt_prog;
5817 }
5818
5819 /**
5820  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5821  * @pf: board private structure
5822  **/
5823 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5824 {
5825         struct i40e_fdir_filter *filter;
5826         u32 fcnt_prog, fcnt_avail;
5827         struct hlist_node *node;
5828
5829         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5830                 return;
5831
5832         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5833          * to re-enable
5834          */
5835         fcnt_prog = i40e_get_global_fd_count(pf);
5836         fcnt_avail = pf->fdir_pf_filter_count;
5837         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5838             (pf->fd_add_err == 0) ||
5839             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5840                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5841                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5842                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5843                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5844                                 dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5845                 }
5846         }
5847         /* Wait for some more space to be available to turn on ATR */
5848         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5849                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5850                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5851                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5852                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5853                                 dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
5854                 }
5855         }
5856
5857         /* if hw had a problem adding a filter, delete it */
5858         if (pf->fd_inv > 0) {
5859                 hlist_for_each_entry_safe(filter, node,
5860                                           &pf->fdir_filter_list, fdir_node) {
5861                         if (filter->fd_id == pf->fd_inv) {
5862                                 hlist_del(&filter->fdir_node);
5863                                 kfree(filter);
5864                                 pf->fdir_pf_active_filters--;
5865                         }
5866                 }
5867         }
5868 }
5869
5870 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5871 #define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
5872 /**
5873  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5874  * @pf: board private structure
5875  **/
5876 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5877 {
5878         unsigned long min_flush_time;
5879         int flush_wait_retry = 50;
5880         bool disable_atr = false;
5881         int fd_room;
5882         int reg;
5883
5884         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5885                 return;
5886
5887         if (!time_after(jiffies, pf->fd_flush_timestamp +
5888                                  (I40E_MIN_FD_FLUSH_INTERVAL * HZ)))
5889                 return;
5890
5891         /* If the flush is happening too quick and we have mostly SB rules we
5892          * should not re-enable ATR for some time.
5893          */
5894         min_flush_time = pf->fd_flush_timestamp +
5895                          (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
5896         fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;
5897
5898         if (!(time_after(jiffies, min_flush_time)) &&
5899             (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
5900                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
5901                         dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
5902                 disable_atr = true;
5903         }
5904
5905         pf->fd_flush_timestamp = jiffies;
5906         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5907         /* flush all filters */
5908         wr32(&pf->hw, I40E_PFQF_CTL_1,
5909              I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
5910         i40e_flush(&pf->hw);
5911         pf->fd_flush_cnt++;
5912         pf->fd_add_err = 0;
5913         do {
5914                 /* Check FD flush status every 5-6msec */
5915                 usleep_range(5000, 6000);
5916                 reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
5917                 if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
5918                         break;
5919         } while (flush_wait_retry--);
5920         if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
5921                 dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
5922         } else {
5923                 /* replay sideband filters */
5924                 i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
5925                 if (!disable_atr)
5926                         pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
5927                 clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5928                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
5929                         dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
5930         }
5931
5932 }
5933
5934 /**
5935  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
5936  * @pf: board private structure
5937  **/
5938 u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
5939 {
5940         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
5941 }
5942
5943 /* We can see up to 256 filter programming desc in transit if the filters are
5944  * being applied really fast; before we see the first
5945  * filter miss error on Rx queue 0. Accumulating enough error messages before
5946  * reacting will make sure we don't cause flush too often.
5947  */
5948 #define I40E_MAX_FD_PROGRAM_ERROR 256
5949
5950 /**
5951  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
5952  * @pf: board private structure
5953  **/
5954 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
5955 {
5956
5957         /* if interface is down do nothing */
5958         if (test_bit(__I40E_DOWN, &pf->state))
5959                 return;
5960
5961         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5962                 return;
5963
5964         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5965                 i40e_fdir_flush_and_replay(pf);
5966
5967         i40e_fdir_check_and_reenable(pf);
5968
5969 }
5970
5971 /**
5972  * i40e_vsi_link_event - notify VSI of a link event
5973  * @vsi: vsi to be notified
5974  * @link_up: link up or down
5975  **/
5976 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
5977 {
5978         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
5979                 return;
5980
5981         switch (vsi->type) {
5982         case I40E_VSI_MAIN:
5983 #ifdef I40E_FCOE
5984         case I40E_VSI_FCOE:
5985 #endif
5986                 if (!vsi->netdev || !vsi->netdev_registered)
5987                         break;
5988
5989                 if (link_up) {
5990                         netif_carrier_on(vsi->netdev);
5991                         netif_tx_wake_all_queues(vsi->netdev);
5992                 } else {
5993                         netif_carrier_off(vsi->netdev);
5994                         netif_tx_stop_all_queues(vsi->netdev);
5995                 }
5996                 break;
5997
5998         case I40E_VSI_SRIOV:
5999         case I40E_VSI_VMDQ2:
6000         case I40E_VSI_CTRL:
6001         case I40E_VSI_MIRROR:
6002         default:
6003                 /* there is no notification for other VSIs */
6004                 break;
6005         }
6006 }
6007
6008 /**
6009  * i40e_veb_link_event - notify elements on the veb of a link event
6010  * @veb: veb to be notified
6011  * @link_up: link up or down
6012  **/
6013 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
6014 {
6015         struct i40e_pf *pf;
6016         int i;
6017
6018         if (!veb || !veb->pf)
6019                 return;
6020         pf = veb->pf;
6021
6022         /* depth first... */
6023         for (i = 0; i < I40E_MAX_VEB; i++)
6024                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
6025                         i40e_veb_link_event(pf->veb[i], link_up);
6026
6027         /* ... now the local VSIs */
6028         for (i = 0; i < pf->num_alloc_vsi; i++)
6029                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
6030                         i40e_vsi_link_event(pf->vsi[i], link_up);
6031 }
6032
6033 /**
6034  * i40e_link_event - Update netif_carrier status
6035  * @pf: board private structure
6036  **/
6037 static void i40e_link_event(struct i40e_pf *pf)
6038 {
6039         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6040         u8 new_link_speed, old_link_speed;
6041         i40e_status status;
6042         bool new_link, old_link;
6043
6044         /* save off old link status information */
6045         pf->hw.phy.link_info_old = pf->hw.phy.link_info;
6046
6047         /* set this to force the get_link_status call to refresh state */
6048         pf->hw.phy.get_link_info = true;
6049
6050         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
6051
6052         status = i40e_get_link_status(&pf->hw, &new_link);
6053         if (status) {
6054                 dev_dbg(&pf->pdev->dev, "couldn't get link state, status: %d\n",
6055                         status);
6056                 return;
6057         }
6058
6059         old_link_speed = pf->hw.phy.link_info_old.link_speed;
6060         new_link_speed = pf->hw.phy.link_info.link_speed;
6061
6062         if (new_link == old_link &&
6063             new_link_speed == old_link_speed &&
6064             (test_bit(__I40E_DOWN, &vsi->state) ||
6065              new_link == netif_carrier_ok(vsi->netdev)))
6066                 return;
6067
6068         if (!test_bit(__I40E_DOWN, &vsi->state))
6069                 i40e_print_link_message(vsi, new_link);
6070
6071         /* Notify the base of the switch tree connected to
6072          * the link.  Floating VEBs are not notified.
6073          */
6074         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
6075                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
6076         else
6077                 i40e_vsi_link_event(vsi, new_link);
6078
6079         if (pf->vf)
6080                 i40e_vc_notify_link_state(pf);
6081
6082         if (pf->flags & I40E_FLAG_PTP)
6083                 i40e_ptp_set_increment(pf);
6084 }
6085
6086 /**
6087  * i40e_watchdog_subtask - periodic checks not using event driven response
6088  * @pf: board private structure
6089  **/
6090 static void i40e_watchdog_subtask(struct i40e_pf *pf)
6091 {
6092         int i;
6093
6094         /* if interface is down do nothing */
6095         if (test_bit(__I40E_DOWN, &pf->state) ||
6096             test_bit(__I40E_CONFIG_BUSY, &pf->state))
6097                 return;
6098
6099         /* make sure we don't do these things too often */
6100         if (time_before(jiffies, (pf->service_timer_previous +
6101                                   pf->service_timer_period)))
6102                 return;
6103         pf->service_timer_previous = jiffies;
6104
6105         if (pf->flags & I40E_FLAG_LINK_POLLING_ENABLED)
6106                 i40e_link_event(pf);
6107
6108         /* Update the stats for active netdevs so the network stack
6109          * can look at updated numbers whenever it cares to
6110          */
6111         for (i = 0; i < pf->num_alloc_vsi; i++)
6112                 if (pf->vsi[i] && pf->vsi[i]->netdev)
6113                         i40e_update_stats(pf->vsi[i]);
6114
6115         if (pf->flags & I40E_FLAG_VEB_STATS_ENABLED) {
6116                 /* Update the stats for the active switching components */
6117                 for (i = 0; i < I40E_MAX_VEB; i++)
6118                         if (pf->veb[i])
6119                                 i40e_update_veb_stats(pf->veb[i]);
6120         }
6121
6122         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
6123 }
6124
6125 /**
6126  * i40e_reset_subtask - Set up for resetting the device and driver
6127  * @pf: board private structure
6128  **/
6129 static void i40e_reset_subtask(struct i40e_pf *pf)
6130 {
6131         u32 reset_flags = 0;
6132
6133         rtnl_lock();
6134         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
6135                 reset_flags |= BIT(__I40E_REINIT_REQUESTED);
6136                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
6137         }
6138         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
6139                 reset_flags |= BIT(__I40E_PF_RESET_REQUESTED);
6140                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6141         }
6142         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
6143                 reset_flags |= BIT(__I40E_CORE_RESET_REQUESTED);
6144                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
6145         }
6146         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
6147                 reset_flags |= BIT(__I40E_GLOBAL_RESET_REQUESTED);
6148                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
6149         }
6150         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
6151                 reset_flags |= BIT(__I40E_DOWN_REQUESTED);
6152                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
6153         }
6154
6155         /* If there's a recovery already waiting, it takes
6156          * precedence before starting a new reset sequence.
6157          */
6158         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
6159                 i40e_handle_reset_warning(pf);
6160                 goto unlock;
6161         }
6162
6163         /* If we're already down or resetting, just bail */
6164         if (reset_flags &&
6165             !test_bit(__I40E_DOWN, &pf->state) &&
6166             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
6167                 i40e_do_reset(pf, reset_flags);
6168
6169 unlock:
6170         rtnl_unlock();
6171 }
6172
6173 /**
6174  * i40e_handle_link_event - Handle link event
6175  * @pf: board private structure
6176  * @e: event info posted on ARQ
6177  **/
6178 static void i40e_handle_link_event(struct i40e_pf *pf,
6179                                    struct i40e_arq_event_info *e)
6180 {
6181         struct i40e_aqc_get_link_status *status =
6182                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
6183
6184         /* Do a new status request to re-enable LSE reporting
6185          * and load new status information into the hw struct
6186          * This completely ignores any state information
6187          * in the ARQ event info, instead choosing to always
6188          * issue the AQ update link status command.
6189          */
6190         i40e_link_event(pf);
6191
6192         /* check for unqualified module, if link is down */
6193         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
6194             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
6195             (!(status->link_info & I40E_AQ_LINK_UP)))
6196                 dev_err(&pf->pdev->dev,
6197                         "The driver failed to link because an unqualified module was detected.\n");
6198 }
6199
6200 /**
6201  * i40e_clean_adminq_subtask - Clean the AdminQ rings
6202  * @pf: board private structure
6203  **/
6204 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
6205 {
6206         struct i40e_arq_event_info event;
6207         struct i40e_hw *hw = &pf->hw;
6208         u16 pending, i = 0;
6209         i40e_status ret;
6210         u16 opcode;
6211         u32 oldval;
6212         u32 val;
6213
6214         /* Do not run clean AQ when PF reset fails */
6215         if (test_bit(__I40E_RESET_FAILED, &pf->state))
6216                 return;
6217
6218         /* check for error indications */
6219         val = rd32(&pf->hw, pf->hw.aq.arq.len);
6220         oldval = val;
6221         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
6222                 if (hw->debug_mask & I40E_DEBUG_AQ)
6223                         dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
6224                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
6225         }
6226         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
6227                 if (hw->debug_mask & I40E_DEBUG_AQ)
6228                         dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
6229                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
6230         }
6231         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
6232                 if (hw->debug_mask & I40E_DEBUG_AQ)
6233                         dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
6234                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
6235         }
6236         if (oldval != val)
6237                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
6238
6239         val = rd32(&pf->hw, pf->hw.aq.asq.len);
6240         oldval = val;
6241         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
6242                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6243                         dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
6244                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
6245         }
6246         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
6247                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6248                         dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
6249                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
6250         }
6251         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
6252                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6253                         dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
6254                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
6255         }
6256         if (oldval != val)
6257                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
6258
6259         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
6260         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
6261         if (!event.msg_buf)
6262                 return;
6263
6264         do {
6265                 ret = i40e_clean_arq_element(hw, &event, &pending);
6266                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
6267                         break;
6268                 else if (ret) {
6269                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
6270                         break;
6271                 }
6272
6273                 opcode = le16_to_cpu(event.desc.opcode);
6274                 switch (opcode) {
6275
6276                 case i40e_aqc_opc_get_link_status:
6277                         i40e_handle_link_event(pf, &event);
6278                         break;
6279                 case i40e_aqc_opc_send_msg_to_pf:
6280                         ret = i40e_vc_process_vf_msg(pf,
6281                                         le16_to_cpu(event.desc.retval),
6282                                         le32_to_cpu(event.desc.cookie_high),
6283                                         le32_to_cpu(event.desc.cookie_low),
6284                                         event.msg_buf,
6285                                         event.msg_len);
6286                         break;
6287                 case i40e_aqc_opc_lldp_update_mib:
6288                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
6289 #ifdef CONFIG_I40E_DCB
6290                         rtnl_lock();
6291                         ret = i40e_handle_lldp_event(pf, &event);
6292                         rtnl_unlock();
6293 #endif /* CONFIG_I40E_DCB */
6294                         break;
6295                 case i40e_aqc_opc_event_lan_overflow:
6296                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
6297                         i40e_handle_lan_overflow_event(pf, &event);
6298                         break;
6299                 case i40e_aqc_opc_send_msg_to_peer:
6300                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
6301                         break;
6302                 case i40e_aqc_opc_nvm_erase:
6303                 case i40e_aqc_opc_nvm_update:
6304                 case i40e_aqc_opc_oem_post_update:
6305                         i40e_debug(&pf->hw, I40E_DEBUG_NVM, "ARQ NVM operation completed\n");
6306                         break;
6307                 default:
6308                         dev_info(&pf->pdev->dev,
6309                                  "ARQ Error: Unknown event 0x%04x received\n",
6310                                  opcode);
6311                         break;
6312                 }
6313         } while (pending && (i++ < pf->adminq_work_limit));
6314
6315         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
6316         /* re-enable Admin queue interrupt cause */
6317         val = rd32(hw, I40E_PFINT_ICR0_ENA);
6318         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
6319         wr32(hw, I40E_PFINT_ICR0_ENA, val);
6320         i40e_flush(hw);
6321
6322         kfree(event.msg_buf);
6323 }
6324
6325 /**
6326  * i40e_verify_eeprom - make sure eeprom is good to use
6327  * @pf: board private structure
6328  **/
6329 static void i40e_verify_eeprom(struct i40e_pf *pf)
6330 {
6331         int err;
6332
6333         err = i40e_diag_eeprom_test(&pf->hw);
6334         if (err) {
6335                 /* retry in case of garbage read */
6336                 err = i40e_diag_eeprom_test(&pf->hw);
6337                 if (err) {
6338                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
6339                                  err);
6340                         set_bit(__I40E_BAD_EEPROM, &pf->state);
6341                 }
6342         }
6343
6344         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
6345                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
6346                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
6347         }
6348 }
6349
6350 /**
6351  * i40e_enable_pf_switch_lb
6352  * @pf: pointer to the PF structure
6353  *
6354  * enable switch loop back or die - no point in a return value
6355  **/
6356 static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
6357 {
6358         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6359         struct i40e_vsi_context ctxt;
6360         int ret;
6361
6362         ctxt.seid = pf->main_vsi_seid;
6363         ctxt.pf_num = pf->hw.pf_id;
6364         ctxt.vf_num = 0;
6365         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6366         if (ret) {
6367                 dev_info(&pf->pdev->dev,
6368                          "couldn't get PF vsi config, err %s aq_err %s\n",
6369                          i40e_stat_str(&pf->hw, ret),
6370                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6371                 return;
6372         }
6373         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6374         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6375         ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6376
6377         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6378         if (ret) {
6379                 dev_info(&pf->pdev->dev,
6380                          "update vsi switch failed, err %s aq_err %s\n",
6381                          i40e_stat_str(&pf->hw, ret),
6382                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6383         }
6384 }
6385
6386 /**
6387  * i40e_disable_pf_switch_lb
6388  * @pf: pointer to the PF structure
6389  *
6390  * disable switch loop back or die - no point in a return value
6391  **/
6392 static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
6393 {
6394         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6395         struct i40e_vsi_context ctxt;
6396         int ret;
6397
6398         ctxt.seid = pf->main_vsi_seid;
6399         ctxt.pf_num = pf->hw.pf_id;
6400         ctxt.vf_num = 0;
6401         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6402         if (ret) {
6403                 dev_info(&pf->pdev->dev,
6404                          "couldn't get PF vsi config, err %s aq_err %s\n",
6405                          i40e_stat_str(&pf->hw, ret),
6406                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6407                 return;
6408         }
6409         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6410         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6411         ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6412
6413         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6414         if (ret) {
6415                 dev_info(&pf->pdev->dev,
6416                          "update vsi switch failed, err %s aq_err %s\n",
6417                          i40e_stat_str(&pf->hw, ret),
6418                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6419         }
6420 }
6421
6422 /**
6423  * i40e_config_bridge_mode - Configure the HW bridge mode
6424  * @veb: pointer to the bridge instance
6425  *
6426  * Configure the loop back mode for the LAN VSI that is downlink to the
6427  * specified HW bridge instance. It is expected this function is called
6428  * when a new HW bridge is instantiated.
6429  **/
6430 static void i40e_config_bridge_mode(struct i40e_veb *veb)
6431 {
6432         struct i40e_pf *pf = veb->pf;
6433
6434         if (pf->hw.debug_mask & I40E_DEBUG_LAN)
6435                 dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
6436                          veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
6437         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
6438                 i40e_disable_pf_switch_lb(pf);
6439         else
6440                 i40e_enable_pf_switch_lb(pf);
6441 }
6442
6443 /**
6444  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
6445  * @veb: pointer to the VEB instance
6446  *
6447  * This is a recursive function that first builds the attached VSIs then
6448  * recurses in to build the next layer of VEB.  We track the connections
6449  * through our own index numbers because the seid's from the HW could
6450  * change across the reset.
6451  **/
6452 static int i40e_reconstitute_veb(struct i40e_veb *veb)
6453 {
6454         struct i40e_vsi *ctl_vsi = NULL;
6455         struct i40e_pf *pf = veb->pf;
6456         int v, veb_idx;
6457         int ret;
6458
6459         /* build VSI that owns this VEB, temporarily attached to base VEB */
6460         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
6461                 if (pf->vsi[v] &&
6462                     pf->vsi[v]->veb_idx == veb->idx &&
6463                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
6464                         ctl_vsi = pf->vsi[v];
6465                         break;
6466                 }
6467         }
6468         if (!ctl_vsi) {
6469                 dev_info(&pf->pdev->dev,
6470                          "missing owner VSI for veb_idx %d\n", veb->idx);
6471                 ret = -ENOENT;
6472                 goto end_reconstitute;
6473         }
6474         if (ctl_vsi != pf->vsi[pf->lan_vsi])
6475                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6476         ret = i40e_add_vsi(ctl_vsi);
6477         if (ret) {
6478                 dev_info(&pf->pdev->dev,
6479                          "rebuild of veb_idx %d owner VSI failed: %d\n",
6480                          veb->idx, ret);
6481                 goto end_reconstitute;
6482         }
6483         i40e_vsi_reset_stats(ctl_vsi);
6484
6485         /* create the VEB in the switch and move the VSI onto the VEB */
6486         ret = i40e_add_veb(veb, ctl_vsi);
6487         if (ret)
6488                 goto end_reconstitute;
6489
6490         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
6491                 veb->bridge_mode = BRIDGE_MODE_VEB;
6492         else
6493                 veb->bridge_mode = BRIDGE_MODE_VEPA;
6494         i40e_config_bridge_mode(veb);
6495
6496         /* create the remaining VSIs attached to this VEB */
6497         for (v = 0; v < pf->num_alloc_vsi; v++) {
6498                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
6499                         continue;
6500
6501                 if (pf->vsi[v]->veb_idx == veb->idx) {
6502                         struct i40e_vsi *vsi = pf->vsi[v];
6503
6504                         vsi->uplink_seid = veb->seid;
6505                         ret = i40e_add_vsi(vsi);
6506                         if (ret) {
6507                                 dev_info(&pf->pdev->dev,
6508                                          "rebuild of vsi_idx %d failed: %d\n",
6509                                          v, ret);
6510                                 goto end_reconstitute;
6511                         }
6512                         i40e_vsi_reset_stats(vsi);
6513                 }
6514         }
6515
6516         /* create any VEBs attached to this VEB - RECURSION */
6517         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
6518                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
6519                         pf->veb[veb_idx]->uplink_seid = veb->seid;
6520                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
6521                         if (ret)
6522                                 break;
6523                 }
6524         }
6525
6526 end_reconstitute:
6527         return ret;
6528 }
6529
6530 /**
6531  * i40e_get_capabilities - get info about the HW
6532  * @pf: the PF struct
6533  **/
6534 static int i40e_get_capabilities(struct i40e_pf *pf)
6535 {
6536         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
6537         u16 data_size;
6538         int buf_len;
6539         int err;
6540
6541         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
6542         do {
6543                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
6544                 if (!cap_buf)
6545                         return -ENOMEM;
6546
6547                 /* this loads the data into the hw struct for us */
6548                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
6549                                             &data_size,
6550                                             i40e_aqc_opc_list_func_capabilities,
6551                                             NULL);
6552                 /* data loaded, buffer no longer needed */
6553                 kfree(cap_buf);
6554
6555                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
6556                         /* retry with a larger buffer */
6557                         buf_len = data_size;
6558                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
6559                         dev_info(&pf->pdev->dev,
6560                                  "capability discovery failed, err %s aq_err %s\n",
6561                                  i40e_stat_str(&pf->hw, err),
6562                                  i40e_aq_str(&pf->hw,
6563                                              pf->hw.aq.asq_last_status));
6564                         return -ENODEV;
6565                 }
6566         } while (err);
6567
6568         if (pf->hw.debug_mask & I40E_DEBUG_USER)
6569                 dev_info(&pf->pdev->dev,
6570                          "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",
6571                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6572                          pf->hw.func_caps.num_msix_vectors,
6573                          pf->hw.func_caps.num_msix_vectors_vf,
6574                          pf->hw.func_caps.fd_filters_guaranteed,
6575                          pf->hw.func_caps.fd_filters_best_effort,
6576                          pf->hw.func_caps.num_tx_qp,
6577                          pf->hw.func_caps.num_vsis);
6578
6579 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6580                        + pf->hw.func_caps.num_vfs)
6581         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6582                 dev_info(&pf->pdev->dev,
6583                          "got num_vsis %d, setting num_vsis to %d\n",
6584                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6585                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6586         }
6587
6588         return 0;
6589 }
6590
6591 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6592
6593 /**
6594  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6595  * @pf: board private structure
6596  **/
6597 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6598 {
6599         struct i40e_vsi *vsi;
6600         int i;
6601
6602         /* quick workaround for an NVM issue that leaves a critical register
6603          * uninitialized
6604          */
6605         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6606                 static const u32 hkey[] = {
6607                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6608                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6609                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6610                         0x95b3a76d};
6611
6612                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6613                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6614         }
6615
6616         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6617                 return;
6618
6619         /* find existing VSI and see if it needs configuring */
6620         vsi = NULL;
6621         for (i = 0; i < pf->num_alloc_vsi; i++) {
6622                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6623                         vsi = pf->vsi[i];
6624                         break;
6625                 }
6626         }
6627
6628         /* create a new VSI if none exists */
6629         if (!vsi) {
6630                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6631                                      pf->vsi[pf->lan_vsi]->seid, 0);
6632                 if (!vsi) {
6633                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6634                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6635                         return;
6636                 }
6637         }
6638
6639         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6640 }
6641
6642 /**
6643  * i40e_fdir_teardown - release the Flow Director resources
6644  * @pf: board private structure
6645  **/
6646 static void i40e_fdir_teardown(struct i40e_pf *pf)
6647 {
6648         int i;
6649
6650         i40e_fdir_filter_exit(pf);
6651         for (i = 0; i < pf->num_alloc_vsi; i++) {
6652                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6653                         i40e_vsi_release(pf->vsi[i]);
6654                         break;
6655                 }
6656         }
6657 }
6658
6659 /**
6660  * i40e_prep_for_reset - prep for the core to reset
6661  * @pf: board private structure
6662  *
6663  * Close up the VFs and other things in prep for PF Reset.
6664   **/
6665 static void i40e_prep_for_reset(struct i40e_pf *pf)
6666 {
6667         struct i40e_hw *hw = &pf->hw;
6668         i40e_status ret = 0;
6669         u32 v;
6670
6671         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6672         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6673                 return;
6674
6675         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6676
6677         /* quiesce the VSIs and their queues that are not already DOWN */
6678         i40e_pf_quiesce_all_vsi(pf);
6679
6680         for (v = 0; v < pf->num_alloc_vsi; v++) {
6681                 if (pf->vsi[v])
6682                         pf->vsi[v]->seid = 0;
6683         }
6684
6685         i40e_shutdown_adminq(&pf->hw);
6686
6687         /* call shutdown HMC */
6688         if (hw->hmc.hmc_obj) {
6689                 ret = i40e_shutdown_lan_hmc(hw);
6690                 if (ret)
6691                         dev_warn(&pf->pdev->dev,
6692                                  "shutdown_lan_hmc failed: %d\n", ret);
6693         }
6694 }
6695
6696 /**
6697  * i40e_send_version - update firmware with driver version
6698  * @pf: PF struct
6699  */
6700 static void i40e_send_version(struct i40e_pf *pf)
6701 {
6702         struct i40e_driver_version dv;
6703
6704         dv.major_version = DRV_VERSION_MAJOR;
6705         dv.minor_version = DRV_VERSION_MINOR;
6706         dv.build_version = DRV_VERSION_BUILD;
6707         dv.subbuild_version = 0;
6708         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6709         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6710 }
6711
6712 /**
6713  * i40e_reset_and_rebuild - reset and rebuild using a saved config
6714  * @pf: board private structure
6715  * @reinit: if the Main VSI needs to re-initialized.
6716  **/
6717 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
6718 {
6719         struct i40e_hw *hw = &pf->hw;
6720         u8 set_fc_aq_fail = 0;
6721         i40e_status ret;
6722         u32 val;
6723         u32 v;
6724
6725         /* Now we wait for GRST to settle out.
6726          * We don't have to delete the VEBs or VSIs from the hw switch
6727          * because the reset will make them disappear.
6728          */
6729         ret = i40e_pf_reset(hw);
6730         if (ret) {
6731                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6732                 set_bit(__I40E_RESET_FAILED, &pf->state);
6733                 goto clear_recovery;
6734         }
6735         pf->pfr_count++;
6736
6737         if (test_bit(__I40E_DOWN, &pf->state))
6738                 goto clear_recovery;
6739         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6740
6741         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6742         ret = i40e_init_adminq(&pf->hw);
6743         if (ret) {
6744                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, err %s aq_err %s\n",
6745                          i40e_stat_str(&pf->hw, ret),
6746                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6747                 goto clear_recovery;
6748         }
6749
6750         /* re-verify the eeprom if we just had an EMP reset */
6751         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
6752                 i40e_verify_eeprom(pf);
6753
6754         i40e_clear_pxe_mode(hw);
6755         ret = i40e_get_capabilities(pf);
6756         if (ret)
6757                 goto end_core_reset;
6758
6759         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6760                                 hw->func_caps.num_rx_qp,
6761                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6762         if (ret) {
6763                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6764                 goto end_core_reset;
6765         }
6766         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6767         if (ret) {
6768                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6769                 goto end_core_reset;
6770         }
6771
6772 #ifdef CONFIG_I40E_DCB
6773         ret = i40e_init_pf_dcb(pf);
6774         if (ret) {
6775                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
6776                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
6777                 /* Continue without DCB enabled */
6778         }
6779 #endif /* CONFIG_I40E_DCB */
6780 #ifdef I40E_FCOE
6781         i40e_init_pf_fcoe(pf);
6782
6783 #endif
6784         /* do basic switch setup */
6785         ret = i40e_setup_pf_switch(pf, reinit);
6786         if (ret)
6787                 goto end_core_reset;
6788
6789         /* driver is only interested in link up/down and module qualification
6790          * reports from firmware
6791          */
6792         ret = i40e_aq_set_phy_int_mask(&pf->hw,
6793                                        I40E_AQ_EVENT_LINK_UPDOWN |
6794                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
6795         if (ret)
6796                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
6797                          i40e_stat_str(&pf->hw, ret),
6798                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6799
6800         /* make sure our flow control settings are restored */
6801         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6802         if (ret)
6803                 dev_dbg(&pf->pdev->dev, "setting flow control: ret = %s last_status = %s\n",
6804                         i40e_stat_str(&pf->hw, ret),
6805                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6806
6807         /* Rebuild the VSIs and VEBs that existed before reset.
6808          * They are still in our local switch element arrays, so only
6809          * need to rebuild the switch model in the HW.
6810          *
6811          * If there were VEBs but the reconstitution failed, we'll try
6812          * try to recover minimal use by getting the basic PF VSI working.
6813          */
6814         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6815                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6816                 /* find the one VEB connected to the MAC, and find orphans */
6817                 for (v = 0; v < I40E_MAX_VEB; v++) {
6818                         if (!pf->veb[v])
6819                                 continue;
6820
6821                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6822                             pf->veb[v]->uplink_seid == 0) {
6823                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6824
6825                                 if (!ret)
6826                                         continue;
6827
6828                                 /* If Main VEB failed, we're in deep doodoo,
6829                                  * so give up rebuilding the switch and set up
6830                                  * for minimal rebuild of PF VSI.
6831                                  * If orphan failed, we'll report the error
6832                                  * but try to keep going.
6833                                  */
6834                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6835                                         dev_info(&pf->pdev->dev,
6836                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6837                                                  ret);
6838                                         pf->vsi[pf->lan_vsi]->uplink_seid
6839                                                                 = pf->mac_seid;
6840                                         break;
6841                                 } else if (pf->veb[v]->uplink_seid == 0) {
6842                                         dev_info(&pf->pdev->dev,
6843                                                  "rebuild of orphan VEB failed: %d\n",
6844                                                  ret);
6845                                 }
6846                         }
6847                 }
6848         }
6849
6850         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6851                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6852                 /* no VEB, so rebuild only the Main VSI */
6853                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6854                 if (ret) {
6855                         dev_info(&pf->pdev->dev,
6856                                  "rebuild of Main VSI failed: %d\n", ret);
6857                         goto end_core_reset;
6858                 }
6859         }
6860
6861         /* Reconfigure hardware for allowing smaller MSS in the case
6862          * of TSO, so that we avoid the MDD being fired and causing
6863          * a reset in the case of small MSS+TSO.
6864          */
6865 #define I40E_REG_MSS          0x000E64DC
6866 #define I40E_REG_MSS_MIN_MASK 0x3FF0000
6867 #define I40E_64BYTE_MSS       0x400000
6868         val = rd32(hw, I40E_REG_MSS);
6869         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
6870                 val &= ~I40E_REG_MSS_MIN_MASK;
6871                 val |= I40E_64BYTE_MSS;
6872                 wr32(hw, I40E_REG_MSS, val);
6873         }
6874
6875         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
6876             (pf->hw.aq.fw_maj_ver < 4)) {
6877                 msleep(75);
6878                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6879                 if (ret)
6880                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
6881                                  i40e_stat_str(&pf->hw, ret),
6882                                  i40e_aq_str(&pf->hw,
6883                                              pf->hw.aq.asq_last_status));
6884         }
6885         /* reinit the misc interrupt */
6886         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6887                 ret = i40e_setup_misc_vector(pf);
6888
6889         /* Add a filter to drop all Flow control frames from any VSI from being
6890          * transmitted. By doing so we stop a malicious VF from sending out
6891          * PAUSE or PFC frames and potentially controlling traffic for other
6892          * PF/VF VSIs.
6893          * The FW can still send Flow control frames if enabled.
6894          */
6895         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
6896                                                        pf->main_vsi_seid);
6897
6898         /* restart the VSIs that were rebuilt and running before the reset */
6899         i40e_pf_unquiesce_all_vsi(pf);
6900
6901         if (pf->num_alloc_vfs) {
6902                 for (v = 0; v < pf->num_alloc_vfs; v++)
6903                         i40e_reset_vf(&pf->vf[v], true);
6904         }
6905
6906         /* tell the firmware that we're starting */
6907         i40e_send_version(pf);
6908
6909 end_core_reset:
6910         clear_bit(__I40E_RESET_FAILED, &pf->state);
6911 clear_recovery:
6912         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
6913 }
6914
6915 /**
6916  * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
6917  * @pf: board private structure
6918  *
6919  * Close up the VFs and other things in prep for a Core Reset,
6920  * then get ready to rebuild the world.
6921  **/
6922 static void i40e_handle_reset_warning(struct i40e_pf *pf)
6923 {
6924         i40e_prep_for_reset(pf);
6925         i40e_reset_and_rebuild(pf, false);
6926 }
6927
6928 /**
6929  * i40e_handle_mdd_event
6930  * @pf: pointer to the PF structure
6931  *
6932  * Called from the MDD irq handler to identify possibly malicious vfs
6933  **/
6934 static void i40e_handle_mdd_event(struct i40e_pf *pf)
6935 {
6936         struct i40e_hw *hw = &pf->hw;
6937         bool mdd_detected = false;
6938         bool pf_mdd_detected = false;
6939         struct i40e_vf *vf;
6940         u32 reg;
6941         int i;
6942
6943         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
6944                 return;
6945
6946         /* find what triggered the MDD event */
6947         reg = rd32(hw, I40E_GL_MDET_TX);
6948         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
6949                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
6950                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
6951                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
6952                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
6953                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
6954                                 I40E_GL_MDET_TX_EVENT_SHIFT;
6955                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
6956                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
6957                                 pf->hw.func_caps.base_queue;
6958                 if (netif_msg_tx_err(pf))
6959                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
6960                                  event, queue, pf_num, vf_num);
6961                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
6962                 mdd_detected = true;
6963         }
6964         reg = rd32(hw, I40E_GL_MDET_RX);
6965         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
6966                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
6967                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
6968                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
6969                                 I40E_GL_MDET_RX_EVENT_SHIFT;
6970                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
6971                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
6972                                 pf->hw.func_caps.base_queue;
6973                 if (netif_msg_rx_err(pf))
6974                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
6975                                  event, queue, func);
6976                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
6977                 mdd_detected = true;
6978         }
6979
6980         if (mdd_detected) {
6981                 reg = rd32(hw, I40E_PF_MDET_TX);
6982                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
6983                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
6984                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
6985                         pf_mdd_detected = true;
6986                 }
6987                 reg = rd32(hw, I40E_PF_MDET_RX);
6988                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
6989                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
6990                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
6991                         pf_mdd_detected = true;
6992                 }
6993                 /* Queue belongs to the PF, initiate a reset */
6994                 if (pf_mdd_detected) {
6995                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6996                         i40e_service_event_schedule(pf);
6997                 }
6998         }
6999
7000         /* see if one of the VFs needs its hand slapped */
7001         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
7002                 vf = &(pf->vf[i]);
7003                 reg = rd32(hw, I40E_VP_MDET_TX(i));
7004                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
7005                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
7006                         vf->num_mdd_events++;
7007                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
7008                                  i);
7009                 }
7010
7011                 reg = rd32(hw, I40E_VP_MDET_RX(i));
7012                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
7013                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
7014                         vf->num_mdd_events++;
7015                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
7016                                  i);
7017                 }
7018
7019                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
7020                         dev_info(&pf->pdev->dev,
7021                                  "Too many MDD events on VF %d, disabled\n", i);
7022                         dev_info(&pf->pdev->dev,
7023                                  "Use PF Control I/F to re-enable the VF\n");
7024                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
7025                 }
7026         }
7027
7028         /* re-enable mdd interrupt cause */
7029         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
7030         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
7031         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
7032         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
7033         i40e_flush(hw);
7034 }
7035
7036 #ifdef CONFIG_I40E_VXLAN
7037 /**
7038  * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
7039  * @pf: board private structure
7040  **/
7041 static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
7042 {
7043         struct i40e_hw *hw = &pf->hw;
7044         i40e_status ret;
7045         __be16 port;
7046         int i;
7047
7048         if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
7049                 return;
7050
7051         pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
7052
7053         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
7054                 if (pf->pending_vxlan_bitmap & BIT_ULL(i)) {
7055                         pf->pending_vxlan_bitmap &= ~BIT_ULL(i);
7056                         port = pf->vxlan_ports[i];
7057                         if (port)
7058                                 ret = i40e_aq_add_udp_tunnel(hw, ntohs(port),
7059                                                      I40E_AQC_TUNNEL_TYPE_VXLAN,
7060                                                      NULL, NULL);
7061                         else
7062                                 ret = i40e_aq_del_udp_tunnel(hw, i, NULL);
7063
7064                         if (ret) {
7065                                 dev_info(&pf->pdev->dev,
7066                                          "%s vxlan port %d, index %d failed, err %s aq_err %s\n",
7067                                          port ? "add" : "delete",
7068                                          ntohs(port), i,
7069                                          i40e_stat_str(&pf->hw, ret),
7070                                          i40e_aq_str(&pf->hw,
7071                                                     pf->hw.aq.asq_last_status));
7072                                 pf->vxlan_ports[i] = 0;
7073                         }
7074                 }
7075         }
7076 }
7077
7078 #endif
7079 /**
7080  * i40e_service_task - Run the driver's async subtasks
7081  * @work: pointer to work_struct containing our data
7082  **/
7083 static void i40e_service_task(struct work_struct *work)
7084 {
7085         struct i40e_pf *pf = container_of(work,
7086                                           struct i40e_pf,
7087                                           service_task);
7088         unsigned long start_time = jiffies;
7089
7090         /* don't bother with service tasks if a reset is in progress */
7091         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7092                 i40e_service_event_complete(pf);
7093                 return;
7094         }
7095
7096         i40e_detect_recover_hung(pf);
7097         i40e_reset_subtask(pf);
7098         i40e_handle_mdd_event(pf);
7099         i40e_vc_process_vflr_event(pf);
7100         i40e_watchdog_subtask(pf);
7101         i40e_fdir_reinit_subtask(pf);
7102         i40e_sync_filters_subtask(pf);
7103 #ifdef CONFIG_I40E_VXLAN
7104         i40e_sync_vxlan_filters_subtask(pf);
7105 #endif
7106         i40e_clean_adminq_subtask(pf);
7107
7108         i40e_service_event_complete(pf);
7109
7110         /* If the tasks have taken longer than one timer cycle or there
7111          * is more work to be done, reschedule the service task now
7112          * rather than wait for the timer to tick again.
7113          */
7114         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
7115             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
7116             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
7117             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
7118                 i40e_service_event_schedule(pf);
7119 }
7120
7121 /**
7122  * i40e_service_timer - timer callback
7123  * @data: pointer to PF struct
7124  **/
7125 static void i40e_service_timer(unsigned long data)
7126 {
7127         struct i40e_pf *pf = (struct i40e_pf *)data;
7128
7129         mod_timer(&pf->service_timer,
7130                   round_jiffies(jiffies + pf->service_timer_period));
7131         i40e_service_event_schedule(pf);
7132 }
7133
7134 /**
7135  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
7136  * @vsi: the VSI being configured
7137  **/
7138 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
7139 {
7140         struct i40e_pf *pf = vsi->back;
7141
7142         switch (vsi->type) {
7143         case I40E_VSI_MAIN:
7144                 vsi->alloc_queue_pairs = pf->num_lan_qps;
7145                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7146                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7147                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7148                         vsi->num_q_vectors = pf->num_lan_msix;
7149                 else
7150                         vsi->num_q_vectors = 1;
7151
7152                 break;
7153
7154         case I40E_VSI_FDIR:
7155                 vsi->alloc_queue_pairs = 1;
7156                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
7157                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7158                 vsi->num_q_vectors = 1;
7159                 break;
7160
7161         case I40E_VSI_VMDQ2:
7162                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
7163                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7164                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7165                 vsi->num_q_vectors = pf->num_vmdq_msix;
7166                 break;
7167
7168         case I40E_VSI_SRIOV:
7169                 vsi->alloc_queue_pairs = pf->num_vf_qps;
7170                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7171                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7172                 break;
7173
7174 #ifdef I40E_FCOE
7175         case I40E_VSI_FCOE:
7176                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
7177                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7178                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7179                 vsi->num_q_vectors = pf->num_fcoe_msix;
7180                 break;
7181
7182 #endif /* I40E_FCOE */
7183         default:
7184                 WARN_ON(1);
7185                 return -ENODATA;
7186         }
7187
7188         return 0;
7189 }
7190
7191 /**
7192  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
7193  * @type: VSI pointer
7194  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
7195  *
7196  * On error: returns error code (negative)
7197  * On success: returns 0
7198  **/
7199 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
7200 {
7201         int size;
7202         int ret = 0;
7203
7204         /* allocate memory for both Tx and Rx ring pointers */
7205         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
7206         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
7207         if (!vsi->tx_rings)
7208                 return -ENOMEM;
7209         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
7210
7211         if (alloc_qvectors) {
7212                 /* allocate memory for q_vector pointers */
7213                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
7214                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
7215                 if (!vsi->q_vectors) {
7216                         ret = -ENOMEM;
7217                         goto err_vectors;
7218                 }
7219         }
7220         return ret;
7221
7222 err_vectors:
7223         kfree(vsi->tx_rings);
7224         return ret;
7225 }
7226
7227 /**
7228  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
7229  * @pf: board private structure
7230  * @type: type of VSI
7231  *
7232  * On error: returns error code (negative)
7233  * On success: returns vsi index in PF (positive)
7234  **/
7235 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
7236 {
7237         int ret = -ENODEV;
7238         struct i40e_vsi *vsi;
7239         int vsi_idx;
7240         int i;
7241
7242         /* Need to protect the allocation of the VSIs at the PF level */
7243         mutex_lock(&pf->switch_mutex);
7244
7245         /* VSI list may be fragmented if VSI creation/destruction has
7246          * been happening.  We can afford to do a quick scan to look
7247          * for any free VSIs in the list.
7248          *
7249          * find next empty vsi slot, looping back around if necessary
7250          */
7251         i = pf->next_vsi;
7252         while (i < pf->num_alloc_vsi && pf->vsi[i])
7253                 i++;
7254         if (i >= pf->num_alloc_vsi) {
7255                 i = 0;
7256                 while (i < pf->next_vsi && pf->vsi[i])
7257                         i++;
7258         }
7259
7260         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
7261                 vsi_idx = i;             /* Found one! */
7262         } else {
7263                 ret = -ENODEV;
7264                 goto unlock_pf;  /* out of VSI slots! */
7265         }
7266         pf->next_vsi = ++i;
7267
7268         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
7269         if (!vsi) {
7270                 ret = -ENOMEM;
7271                 goto unlock_pf;
7272         }
7273         vsi->type = type;
7274         vsi->back = pf;
7275         set_bit(__I40E_DOWN, &vsi->state);
7276         vsi->flags = 0;
7277         vsi->idx = vsi_idx;
7278         vsi->rx_itr_setting = pf->rx_itr_default;
7279         vsi->tx_itr_setting = pf->tx_itr_default;
7280         vsi->int_rate_limit = 0;
7281         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
7282                                 pf->rss_table_size : 64;
7283         vsi->netdev_registered = false;
7284         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
7285         INIT_LIST_HEAD(&vsi->mac_filter_list);
7286         vsi->irqs_ready = false;
7287
7288         ret = i40e_set_num_rings_in_vsi(vsi);
7289         if (ret)
7290                 goto err_rings;
7291
7292         ret = i40e_vsi_alloc_arrays(vsi, true);
7293         if (ret)
7294                 goto err_rings;
7295
7296         /* Setup default MSIX irq handler for VSI */
7297         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
7298
7299         /* Initialize VSI lock */
7300         spin_lock_init(&vsi->mac_filter_list_lock);
7301         pf->vsi[vsi_idx] = vsi;
7302         ret = vsi_idx;
7303         goto unlock_pf;
7304
7305 err_rings:
7306         pf->next_vsi = i - 1;
7307         kfree(vsi);
7308 unlock_pf:
7309         mutex_unlock(&pf->switch_mutex);
7310         return ret;
7311 }
7312
7313 /**
7314  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
7315  * @type: VSI pointer
7316  * @free_qvectors: a bool to specify if q_vectors need to be freed.
7317  *
7318  * On error: returns error code (negative)
7319  * On success: returns 0
7320  **/
7321 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
7322 {
7323         /* free the ring and vector containers */
7324         if (free_qvectors) {
7325                 kfree(vsi->q_vectors);
7326                 vsi->q_vectors = NULL;
7327         }
7328         kfree(vsi->tx_rings);
7329         vsi->tx_rings = NULL;
7330         vsi->rx_rings = NULL;
7331 }
7332
7333 /**
7334  * i40e_clear_rss_config_user - clear the user configured RSS hash keys
7335  * and lookup table
7336  * @vsi: Pointer to VSI structure
7337  */
7338 static void i40e_clear_rss_config_user(struct i40e_vsi *vsi)
7339 {
7340         if (!vsi)
7341                 return;
7342
7343         kfree(vsi->rss_hkey_user);
7344         vsi->rss_hkey_user = NULL;
7345
7346         kfree(vsi->rss_lut_user);
7347         vsi->rss_lut_user = NULL;
7348 }
7349
7350 /**
7351  * i40e_vsi_clear - Deallocate the VSI provided
7352  * @vsi: the VSI being un-configured
7353  **/
7354 static int i40e_vsi_clear(struct i40e_vsi *vsi)
7355 {
7356         struct i40e_pf *pf;
7357
7358         if (!vsi)
7359                 return 0;
7360
7361         if (!vsi->back)
7362                 goto free_vsi;
7363         pf = vsi->back;
7364
7365         mutex_lock(&pf->switch_mutex);
7366         if (!pf->vsi[vsi->idx]) {
7367                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
7368                         vsi->idx, vsi->idx, vsi, vsi->type);
7369                 goto unlock_vsi;
7370         }
7371
7372         if (pf->vsi[vsi->idx] != vsi) {
7373                 dev_err(&pf->pdev->dev,
7374                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
7375                         pf->vsi[vsi->idx]->idx,
7376                         pf->vsi[vsi->idx],
7377                         pf->vsi[vsi->idx]->type,
7378                         vsi->idx, vsi, vsi->type);
7379                 goto unlock_vsi;
7380         }
7381
7382         /* updates the PF for this cleared vsi */
7383         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7384         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
7385
7386         i40e_vsi_free_arrays(vsi, true);
7387         i40e_clear_rss_config_user(vsi);
7388
7389         pf->vsi[vsi->idx] = NULL;
7390         if (vsi->idx < pf->next_vsi)
7391                 pf->next_vsi = vsi->idx;
7392
7393 unlock_vsi:
7394         mutex_unlock(&pf->switch_mutex);
7395 free_vsi:
7396         kfree(vsi);
7397
7398         return 0;
7399 }
7400
7401 /**
7402  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
7403  * @vsi: the VSI being cleaned
7404  **/
7405 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
7406 {
7407         int i;
7408
7409         if (vsi->tx_rings && vsi->tx_rings[0]) {
7410                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7411                         kfree_rcu(vsi->tx_rings[i], rcu);
7412                         vsi->tx_rings[i] = NULL;
7413                         vsi->rx_rings[i] = NULL;
7414                 }
7415         }
7416 }
7417
7418 /**
7419  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
7420  * @vsi: the VSI being configured
7421  **/
7422 static int i40e_alloc_rings(struct i40e_vsi *vsi)
7423 {
7424         struct i40e_ring *tx_ring, *rx_ring;
7425         struct i40e_pf *pf = vsi->back;
7426         int i;
7427
7428         /* Set basic values in the rings to be used later during open() */
7429         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7430                 /* allocate space for both Tx and Rx in one shot */
7431                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
7432                 if (!tx_ring)
7433                         goto err_out;
7434
7435                 tx_ring->queue_index = i;
7436                 tx_ring->reg_idx = vsi->base_queue + i;
7437                 tx_ring->ring_active = false;
7438                 tx_ring->vsi = vsi;
7439                 tx_ring->netdev = vsi->netdev;
7440                 tx_ring->dev = &pf->pdev->dev;
7441                 tx_ring->count = vsi->num_desc;
7442                 tx_ring->size = 0;
7443                 tx_ring->dcb_tc = 0;
7444                 if (vsi->back->flags & I40E_FLAG_WB_ON_ITR_CAPABLE)
7445                         tx_ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
7446                 if (vsi->back->flags & I40E_FLAG_OUTER_UDP_CSUM_CAPABLE)
7447                         tx_ring->flags |= I40E_TXR_FLAGS_OUTER_UDP_CSUM;
7448                 vsi->tx_rings[i] = tx_ring;
7449
7450                 rx_ring = &tx_ring[1];
7451                 rx_ring->queue_index = i;
7452                 rx_ring->reg_idx = vsi->base_queue + i;
7453                 rx_ring->ring_active = false;
7454                 rx_ring->vsi = vsi;
7455                 rx_ring->netdev = vsi->netdev;
7456                 rx_ring->dev = &pf->pdev->dev;
7457                 rx_ring->count = vsi->num_desc;
7458                 rx_ring->size = 0;
7459                 rx_ring->dcb_tc = 0;
7460                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
7461                         set_ring_16byte_desc_enabled(rx_ring);
7462                 else
7463                         clear_ring_16byte_desc_enabled(rx_ring);
7464                 vsi->rx_rings[i] = rx_ring;
7465         }
7466
7467         return 0;
7468
7469 err_out:
7470         i40e_vsi_clear_rings(vsi);
7471         return -ENOMEM;
7472 }
7473
7474 /**
7475  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
7476  * @pf: board private structure
7477  * @vectors: the number of MSI-X vectors to request
7478  *
7479  * Returns the number of vectors reserved, or error
7480  **/
7481 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
7482 {
7483         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
7484                                         I40E_MIN_MSIX, vectors);
7485         if (vectors < 0) {
7486                 dev_info(&pf->pdev->dev,
7487                          "MSI-X vector reservation failed: %d\n", vectors);
7488                 vectors = 0;
7489         }
7490
7491         return vectors;
7492 }
7493
7494 /**
7495  * i40e_init_msix - Setup the MSIX capability
7496  * @pf: board private structure
7497  *
7498  * Work with the OS to set up the MSIX vectors needed.
7499  *
7500  * Returns the number of vectors reserved or negative on failure
7501  **/
7502 static int i40e_init_msix(struct i40e_pf *pf)
7503 {
7504         struct i40e_hw *hw = &pf->hw;
7505         int vectors_left;
7506         int v_budget, i;
7507         int v_actual;
7508
7509         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
7510                 return -ENODEV;
7511
7512         /* The number of vectors we'll request will be comprised of:
7513          *   - Add 1 for "other" cause for Admin Queue events, etc.
7514          *   - The number of LAN queue pairs
7515          *      - Queues being used for RSS.
7516          *              We don't need as many as max_rss_size vectors.
7517          *              use rss_size instead in the calculation since that
7518          *              is governed by number of cpus in the system.
7519          *      - assumes symmetric Tx/Rx pairing
7520          *   - The number of VMDq pairs
7521 #ifdef I40E_FCOE
7522          *   - The number of FCOE qps.
7523 #endif
7524          * Once we count this up, try the request.
7525          *
7526          * If we can't get what we want, we'll simplify to nearly nothing
7527          * and try again.  If that still fails, we punt.
7528          */
7529         vectors_left = hw->func_caps.num_msix_vectors;
7530         v_budget = 0;
7531
7532         /* reserve one vector for miscellaneous handler */
7533         if (vectors_left) {
7534                 v_budget++;
7535                 vectors_left--;
7536         }
7537
7538         /* reserve vectors for the main PF traffic queues */
7539         pf->num_lan_msix = min_t(int, num_online_cpus(), vectors_left);
7540         vectors_left -= pf->num_lan_msix;
7541         v_budget += pf->num_lan_msix;
7542
7543         /* reserve one vector for sideband flow director */
7544         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7545                 if (vectors_left) {
7546                         v_budget++;
7547                         vectors_left--;
7548                 } else {
7549                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7550                 }
7551         }
7552
7553 #ifdef I40E_FCOE
7554         /* can we reserve enough for FCoE? */
7555         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7556                 if (!vectors_left)
7557                         pf->num_fcoe_msix = 0;
7558                 else if (vectors_left >= pf->num_fcoe_qps)
7559                         pf->num_fcoe_msix = pf->num_fcoe_qps;
7560                 else
7561                         pf->num_fcoe_msix = 1;
7562                 v_budget += pf->num_fcoe_msix;
7563                 vectors_left -= pf->num_fcoe_msix;
7564         }
7565
7566 #endif
7567         /* any vectors left over go for VMDq support */
7568         if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
7569                 int vmdq_vecs_wanted = pf->num_vmdq_vsis * pf->num_vmdq_qps;
7570                 int vmdq_vecs = min_t(int, vectors_left, vmdq_vecs_wanted);
7571
7572                 /* if we're short on vectors for what's desired, we limit
7573                  * the queues per vmdq.  If this is still more than are
7574                  * available, the user will need to change the number of
7575                  * queues/vectors used by the PF later with the ethtool
7576                  * channels command
7577                  */
7578                 if (vmdq_vecs < vmdq_vecs_wanted)
7579                         pf->num_vmdq_qps = 1;
7580                 pf->num_vmdq_msix = pf->num_vmdq_qps;
7581
7582                 v_budget += vmdq_vecs;
7583                 vectors_left -= vmdq_vecs;
7584         }
7585
7586         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
7587                                    GFP_KERNEL);
7588         if (!pf->msix_entries)
7589                 return -ENOMEM;
7590
7591         for (i = 0; i < v_budget; i++)
7592                 pf->msix_entries[i].entry = i;
7593         v_actual = i40e_reserve_msix_vectors(pf, v_budget);
7594
7595         if (v_actual != v_budget) {
7596                 /* If we have limited resources, we will start with no vectors
7597                  * for the special features and then allocate vectors to some
7598                  * of these features based on the policy and at the end disable
7599                  * the features that did not get any vectors.
7600                  */
7601 #ifdef I40E_FCOE
7602                 pf->num_fcoe_qps = 0;
7603                 pf->num_fcoe_msix = 0;
7604 #endif
7605                 pf->num_vmdq_msix = 0;
7606         }
7607
7608         if (v_actual < I40E_MIN_MSIX) {
7609                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
7610                 kfree(pf->msix_entries);
7611                 pf->msix_entries = NULL;
7612                 return -ENODEV;
7613
7614         } else if (v_actual == I40E_MIN_MSIX) {
7615                 /* Adjust for minimal MSIX use */
7616                 pf->num_vmdq_vsis = 0;
7617                 pf->num_vmdq_qps = 0;
7618                 pf->num_lan_qps = 1;
7619                 pf->num_lan_msix = 1;
7620
7621         } else if (v_actual != v_budget) {
7622                 int vec;
7623
7624                 /* reserve the misc vector */
7625                 vec = v_actual - 1;
7626
7627                 /* Scale vector usage down */
7628                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
7629                 pf->num_vmdq_vsis = 1;
7630                 pf->num_vmdq_qps = 1;
7631                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7632
7633                 /* partition out the remaining vectors */
7634                 switch (vec) {
7635                 case 2:
7636                         pf->num_lan_msix = 1;
7637                         break;
7638                 case 3:
7639 #ifdef I40E_FCOE
7640                         /* give one vector to FCoE */
7641                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7642                                 pf->num_lan_msix = 1;
7643                                 pf->num_fcoe_msix = 1;
7644                         }
7645 #else
7646                         pf->num_lan_msix = 2;
7647 #endif
7648                         break;
7649                 default:
7650 #ifdef I40E_FCOE
7651                         /* give one vector to FCoE */
7652                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7653                                 pf->num_fcoe_msix = 1;
7654                                 vec--;
7655                         }
7656 #endif
7657                         /* give the rest to the PF */
7658                         pf->num_lan_msix = min_t(int, vec, pf->num_lan_qps);
7659                         break;
7660                 }
7661         }
7662
7663         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7664             (pf->num_vmdq_msix == 0)) {
7665                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
7666                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
7667         }
7668 #ifdef I40E_FCOE
7669
7670         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
7671                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
7672                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
7673         }
7674 #endif
7675         return v_actual;
7676 }
7677
7678 /**
7679  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7680  * @vsi: the VSI being configured
7681  * @v_idx: index of the vector in the vsi struct
7682  *
7683  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
7684  **/
7685 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
7686 {
7687         struct i40e_q_vector *q_vector;
7688
7689         /* allocate q_vector */
7690         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
7691         if (!q_vector)
7692                 return -ENOMEM;
7693
7694         q_vector->vsi = vsi;
7695         q_vector->v_idx = v_idx;
7696         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
7697         if (vsi->netdev)
7698                 netif_napi_add(vsi->netdev, &q_vector->napi,
7699                                i40e_napi_poll, NAPI_POLL_WEIGHT);
7700
7701         q_vector->rx.latency_range = I40E_LOW_LATENCY;
7702         q_vector->tx.latency_range = I40E_LOW_LATENCY;
7703
7704         /* tie q_vector and vsi together */
7705         vsi->q_vectors[v_idx] = q_vector;
7706
7707         return 0;
7708 }
7709
7710 /**
7711  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
7712  * @vsi: the VSI being configured
7713  *
7714  * We allocate one q_vector per queue interrupt.  If allocation fails we
7715  * return -ENOMEM.
7716  **/
7717 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
7718 {
7719         struct i40e_pf *pf = vsi->back;
7720         int v_idx, num_q_vectors;
7721         int err;
7722
7723         /* if not MSIX, give the one vector only to the LAN VSI */
7724         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7725                 num_q_vectors = vsi->num_q_vectors;
7726         else if (vsi == pf->vsi[pf->lan_vsi])
7727                 num_q_vectors = 1;
7728         else
7729                 return -EINVAL;
7730
7731         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
7732                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
7733                 if (err)
7734                         goto err_out;
7735         }
7736
7737         return 0;
7738
7739 err_out:
7740         while (v_idx--)
7741                 i40e_free_q_vector(vsi, v_idx);
7742
7743         return err;
7744 }
7745
7746 /**
7747  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
7748  * @pf: board private structure to initialize
7749  **/
7750 static int i40e_init_interrupt_scheme(struct i40e_pf *pf)
7751 {
7752         int vectors = 0;
7753         ssize_t size;
7754
7755         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7756                 vectors = i40e_init_msix(pf);
7757                 if (vectors < 0) {
7758                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
7759 #ifdef I40E_FCOE
7760                                        I40E_FLAG_FCOE_ENABLED   |
7761 #endif
7762                                        I40E_FLAG_RSS_ENABLED    |
7763                                        I40E_FLAG_DCB_CAPABLE    |
7764                                        I40E_FLAG_SRIOV_ENABLED  |
7765                                        I40E_FLAG_FD_SB_ENABLED  |
7766                                        I40E_FLAG_FD_ATR_ENABLED |
7767                                        I40E_FLAG_VMDQ_ENABLED);
7768
7769                         /* rework the queue expectations without MSIX */
7770                         i40e_determine_queue_usage(pf);
7771                 }
7772         }
7773
7774         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
7775             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
7776                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
7777                 vectors = pci_enable_msi(pf->pdev);
7778                 if (vectors < 0) {
7779                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
7780                                  vectors);
7781                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
7782                 }
7783                 vectors = 1;  /* one MSI or Legacy vector */
7784         }
7785
7786         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
7787                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
7788
7789         /* set up vector assignment tracking */
7790         size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
7791         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7792         if (!pf->irq_pile) {
7793                 dev_err(&pf->pdev->dev, "error allocating irq_pile memory\n");
7794                 return -ENOMEM;
7795         }
7796         pf->irq_pile->num_entries = vectors;
7797         pf->irq_pile->search_hint = 0;
7798
7799         /* track first vector for misc interrupts, ignore return */
7800         (void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
7801
7802         return 0;
7803 }
7804
7805 /**
7806  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
7807  * @pf: board private structure
7808  *
7809  * This sets up the handler for MSIX 0, which is used to manage the
7810  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
7811  * when in MSI or Legacy interrupt mode.
7812  **/
7813 static int i40e_setup_misc_vector(struct i40e_pf *pf)
7814 {
7815         struct i40e_hw *hw = &pf->hw;
7816         int err = 0;
7817
7818         /* Only request the irq if this is the first time through, and
7819          * not when we're rebuilding after a Reset
7820          */
7821         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7822                 err = request_irq(pf->msix_entries[0].vector,
7823                                   i40e_intr, 0, pf->int_name, pf);
7824                 if (err) {
7825                         dev_info(&pf->pdev->dev,
7826                                  "request_irq for %s failed: %d\n",
7827                                  pf->int_name, err);
7828                         return -EFAULT;
7829                 }
7830         }
7831
7832         i40e_enable_misc_int_causes(pf);
7833
7834         /* associate no queues to the misc vector */
7835         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
7836         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
7837
7838         i40e_flush(hw);
7839
7840         i40e_irq_dynamic_enable_icr0(pf);
7841
7842         return err;
7843 }
7844
7845 /**
7846  * i40e_config_rss_aq - Prepare for RSS using AQ commands
7847  * @vsi: vsi structure
7848  * @seed: RSS hash seed
7849  **/
7850 static int i40e_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
7851                               u8 *lut, u16 lut_size)
7852 {
7853         struct i40e_aqc_get_set_rss_key_data rss_key;
7854         struct i40e_pf *pf = vsi->back;
7855         struct i40e_hw *hw = &pf->hw;
7856         bool pf_lut = false;
7857         u8 *rss_lut;
7858         int ret, i;
7859
7860         memset(&rss_key, 0, sizeof(rss_key));
7861         memcpy(&rss_key, seed, sizeof(rss_key));
7862
7863         rss_lut = kzalloc(pf->rss_table_size, GFP_KERNEL);
7864         if (!rss_lut)
7865                 return -ENOMEM;
7866
7867         /* Populate the LUT with max no. of queues in round robin fashion */
7868         for (i = 0; i < vsi->rss_table_size; i++)
7869                 rss_lut[i] = i % vsi->rss_size;
7870
7871         ret = i40e_aq_set_rss_key(hw, vsi->id, &rss_key);
7872         if (ret) {
7873                 dev_info(&pf->pdev->dev,
7874                          "Cannot set RSS key, err %s aq_err %s\n",
7875                          i40e_stat_str(&pf->hw, ret),
7876                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7877                 goto config_rss_aq_out;
7878         }
7879
7880         if (vsi->type == I40E_VSI_MAIN)
7881                 pf_lut = true;
7882
7883         ret = i40e_aq_set_rss_lut(hw, vsi->id, pf_lut, rss_lut,
7884                                   vsi->rss_table_size);
7885         if (ret)
7886                 dev_info(&pf->pdev->dev,
7887                          "Cannot set RSS lut, err %s aq_err %s\n",
7888                          i40e_stat_str(&pf->hw, ret),
7889                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7890
7891 config_rss_aq_out:
7892         kfree(rss_lut);
7893         return ret;
7894 }
7895
7896 /**
7897  * i40e_vsi_config_rss - Prepare for VSI(VMDq) RSS if used
7898  * @vsi: VSI structure
7899  **/
7900 static int i40e_vsi_config_rss(struct i40e_vsi *vsi)
7901 {
7902         u8 seed[I40E_HKEY_ARRAY_SIZE];
7903         struct i40e_pf *pf = vsi->back;
7904         u8 *lut;
7905         int ret;
7906
7907         if (!(pf->flags & I40E_FLAG_RSS_AQ_CAPABLE))
7908                 return 0;
7909
7910         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
7911         if (!lut)
7912                 return -ENOMEM;
7913
7914         i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
7915         netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
7916         vsi->rss_size = min_t(int, pf->alloc_rss_size, vsi->num_queue_pairs);
7917         ret = i40e_config_rss_aq(vsi, seed, lut, vsi->rss_table_size);
7918         kfree(lut);
7919
7920         return ret;
7921 }
7922
7923 /**
7924  * i40e_config_rss_reg - Configure RSS keys and lut by writing registers
7925  * @vsi: Pointer to vsi structure
7926  * @seed: RSS hash seed
7927  * @lut: Lookup table
7928  * @lut_size: Lookup table size
7929  *
7930  * Returns 0 on success, negative on failure
7931  **/
7932 static int i40e_config_rss_reg(struct i40e_vsi *vsi, const u8 *seed,
7933                                const u8 *lut, u16 lut_size)
7934 {
7935         struct i40e_pf *pf = vsi->back;
7936         struct i40e_hw *hw = &pf->hw;
7937         u8 i;
7938
7939         /* Fill out hash function seed */
7940         if (seed) {
7941                 u32 *seed_dw = (u32 *)seed;
7942
7943                 for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
7944                         wr32(hw, I40E_PFQF_HKEY(i), seed_dw[i]);
7945         }
7946
7947         if (lut) {
7948                 u32 *lut_dw = (u32 *)lut;
7949
7950                 if (lut_size != I40E_HLUT_ARRAY_SIZE)
7951                         return -EINVAL;
7952
7953                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
7954                         wr32(hw, I40E_PFQF_HLUT(i), lut_dw[i]);
7955         }
7956         i40e_flush(hw);
7957
7958         return 0;
7959 }
7960
7961 /**
7962  * i40e_get_rss_reg - Get the RSS keys and lut by reading registers
7963  * @vsi: Pointer to VSI structure
7964  * @seed: Buffer to store the keys
7965  * @lut: Buffer to store the lookup table entries
7966  * @lut_size: Size of buffer to store the lookup table entries
7967  *
7968  * Returns 0 on success, negative on failure
7969  */
7970 static int i40e_get_rss_reg(struct i40e_vsi *vsi, u8 *seed,
7971                             u8 *lut, u16 lut_size)
7972 {
7973         struct i40e_pf *pf = vsi->back;
7974         struct i40e_hw *hw = &pf->hw;
7975         u16 i;
7976
7977         if (seed) {
7978                 u32 *seed_dw = (u32 *)seed;
7979
7980                 for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
7981                         seed_dw[i] = rd32(hw, I40E_PFQF_HKEY(i));
7982         }
7983         if (lut) {
7984                 u32 *lut_dw = (u32 *)lut;
7985
7986                 if (lut_size != I40E_HLUT_ARRAY_SIZE)
7987                         return -EINVAL;
7988                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
7989                         lut_dw[i] = rd32(hw, I40E_PFQF_HLUT(i));
7990         }
7991
7992         return 0;
7993 }
7994
7995 /**
7996  * i40e_config_rss - Configure RSS keys and lut
7997  * @vsi: Pointer to VSI structure
7998  * @seed: RSS hash seed
7999  * @lut: Lookup table
8000  * @lut_size: Lookup table size
8001  *
8002  * Returns 0 on success, negative on failure
8003  */
8004 int i40e_config_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
8005 {
8006         struct i40e_pf *pf = vsi->back;
8007
8008         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
8009                 return i40e_config_rss_aq(vsi, seed, lut, lut_size);
8010         else
8011                 return i40e_config_rss_reg(vsi, seed, lut, lut_size);
8012 }
8013
8014 /**
8015  * i40e_get_rss - Get RSS keys and lut
8016  * @vsi: Pointer to VSI structure
8017  * @seed: Buffer to store the keys
8018  * @lut: Buffer to store the lookup table entries
8019  * lut_size: Size of buffer to store the lookup table entries
8020  *
8021  * Returns 0 on success, negative on failure
8022  */
8023 int i40e_get_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
8024 {
8025         return i40e_get_rss_reg(vsi, seed, lut, lut_size);
8026 }
8027
8028 /**
8029  * i40e_fill_rss_lut - Fill the RSS lookup table with default values
8030  * @pf: Pointer to board private structure
8031  * @lut: Lookup table
8032  * @rss_table_size: Lookup table size
8033  * @rss_size: Range of queue number for hashing
8034  */
8035 static void i40e_fill_rss_lut(struct i40e_pf *pf, u8 *lut,
8036                               u16 rss_table_size, u16 rss_size)
8037 {
8038         u16 i;
8039
8040         for (i = 0; i < rss_table_size; i++)
8041                 lut[i] = i % rss_size;
8042 }
8043
8044 /**
8045  * i40e_pf_config_rss - Prepare for RSS if used
8046  * @pf: board private structure
8047  **/
8048 static int i40e_pf_config_rss(struct i40e_pf *pf)
8049 {
8050         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
8051         u8 seed[I40E_HKEY_ARRAY_SIZE];
8052         u8 *lut;
8053         struct i40e_hw *hw = &pf->hw;
8054         u32 reg_val;
8055         u64 hena;
8056         int ret;
8057
8058         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
8059         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
8060                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
8061         hena |= i40e_pf_get_default_rss_hena(pf);
8062
8063         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
8064         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
8065
8066         /* Determine the RSS table size based on the hardware capabilities */
8067         reg_val = rd32(hw, I40E_PFQF_CTL_0);
8068         reg_val = (pf->rss_table_size == 512) ?
8069                         (reg_val | I40E_PFQF_CTL_0_HASHLUTSIZE_512) :
8070                         (reg_val & ~I40E_PFQF_CTL_0_HASHLUTSIZE_512);
8071         wr32(hw, I40E_PFQF_CTL_0, reg_val);
8072
8073         /* Determine the RSS size of the VSI */
8074         if (!vsi->rss_size)
8075                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8076                                       vsi->num_queue_pairs);
8077
8078         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
8079         if (!lut)
8080                 return -ENOMEM;
8081
8082         /* Use user configured lut if there is one, otherwise use default */
8083         if (vsi->rss_lut_user)
8084                 memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
8085         else
8086                 i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
8087
8088         /* Use user configured hash key if there is one, otherwise
8089          * use default.
8090          */
8091         if (vsi->rss_hkey_user)
8092                 memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
8093         else
8094                 netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
8095         ret = i40e_config_rss(vsi, seed, lut, vsi->rss_table_size);
8096         kfree(lut);
8097
8098         return ret;
8099 }
8100
8101 /**
8102  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
8103  * @pf: board private structure
8104  * @queue_count: the requested queue count for rss.
8105  *
8106  * returns 0 if rss is not enabled, if enabled returns the final rss queue
8107  * count which may be different from the requested queue count.
8108  **/
8109 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
8110 {
8111         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
8112         int new_rss_size;
8113
8114         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
8115                 return 0;
8116
8117         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
8118
8119         if (queue_count != vsi->num_queue_pairs) {
8120                 vsi->req_queue_pairs = queue_count;
8121                 i40e_prep_for_reset(pf);
8122
8123                 pf->alloc_rss_size = new_rss_size;
8124
8125                 i40e_reset_and_rebuild(pf, true);
8126
8127                 /* Discard the user configured hash keys and lut, if less
8128                  * queues are enabled.
8129                  */
8130                 if (queue_count < vsi->rss_size) {
8131                         i40e_clear_rss_config_user(vsi);
8132                         dev_dbg(&pf->pdev->dev,
8133                                 "discard user configured hash keys and lut\n");
8134                 }
8135
8136                 /* Reset vsi->rss_size, as number of enabled queues changed */
8137                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8138                                       vsi->num_queue_pairs);
8139
8140                 i40e_pf_config_rss(pf);
8141         }
8142         dev_info(&pf->pdev->dev, "RSS count/HW max RSS count:  %d/%d\n",
8143                  pf->alloc_rss_size, pf->rss_size_max);
8144         return pf->alloc_rss_size;
8145 }
8146
8147 /**
8148  * i40e_get_npar_bw_setting - Retrieve BW settings for this PF partition
8149  * @pf: board private structure
8150  **/
8151 i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf)
8152 {
8153         i40e_status status;
8154         bool min_valid, max_valid;
8155         u32 max_bw, min_bw;
8156
8157         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
8158                                            &min_valid, &max_valid);
8159
8160         if (!status) {
8161                 if (min_valid)
8162                         pf->npar_min_bw = min_bw;
8163                 if (max_valid)
8164                         pf->npar_max_bw = max_bw;
8165         }
8166
8167         return status;
8168 }
8169
8170 /**
8171  * i40e_set_npar_bw_setting - Set BW settings for this PF partition
8172  * @pf: board private structure
8173  **/
8174 i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf)
8175 {
8176         struct i40e_aqc_configure_partition_bw_data bw_data;
8177         i40e_status status;
8178
8179         /* Set the valid bit for this PF */
8180         bw_data.pf_valid_bits = cpu_to_le16(BIT(pf->hw.pf_id));
8181         bw_data.max_bw[pf->hw.pf_id] = pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK;
8182         bw_data.min_bw[pf->hw.pf_id] = pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK;
8183
8184         /* Set the new bandwidths */
8185         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
8186
8187         return status;
8188 }
8189
8190 /**
8191  * i40e_commit_npar_bw_setting - Commit BW settings for this PF partition
8192  * @pf: board private structure
8193  **/
8194 i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf)
8195 {
8196         /* Commit temporary BW setting to permanent NVM image */
8197         enum i40e_admin_queue_err last_aq_status;
8198         i40e_status ret;
8199         u16 nvm_word;
8200
8201         if (pf->hw.partition_id != 1) {
8202                 dev_info(&pf->pdev->dev,
8203                          "Commit BW only works on partition 1! This is partition %d",
8204                          pf->hw.partition_id);
8205                 ret = I40E_NOT_SUPPORTED;
8206                 goto bw_commit_out;
8207         }
8208
8209         /* Acquire NVM for read access */
8210         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
8211         last_aq_status = pf->hw.aq.asq_last_status;
8212         if (ret) {
8213                 dev_info(&pf->pdev->dev,
8214                          "Cannot acquire NVM for read access, err %s aq_err %s\n",
8215                          i40e_stat_str(&pf->hw, ret),
8216                          i40e_aq_str(&pf->hw, last_aq_status));
8217                 goto bw_commit_out;
8218         }
8219
8220         /* Read word 0x10 of NVM - SW compatibility word 1 */
8221         ret = i40e_aq_read_nvm(&pf->hw,
8222                                I40E_SR_NVM_CONTROL_WORD,
8223                                0x10, sizeof(nvm_word), &nvm_word,
8224                                false, NULL);
8225         /* Save off last admin queue command status before releasing
8226          * the NVM
8227          */
8228         last_aq_status = pf->hw.aq.asq_last_status;
8229         i40e_release_nvm(&pf->hw);
8230         if (ret) {
8231                 dev_info(&pf->pdev->dev, "NVM read error, err %s aq_err %s\n",
8232                          i40e_stat_str(&pf->hw, ret),
8233                          i40e_aq_str(&pf->hw, last_aq_status));
8234                 goto bw_commit_out;
8235         }
8236
8237         /* Wait a bit for NVM release to complete */
8238         msleep(50);
8239
8240         /* Acquire NVM for write access */
8241         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
8242         last_aq_status = pf->hw.aq.asq_last_status;
8243         if (ret) {
8244                 dev_info(&pf->pdev->dev,
8245                          "Cannot acquire NVM for write access, err %s aq_err %s\n",
8246                          i40e_stat_str(&pf->hw, ret),
8247                          i40e_aq_str(&pf->hw, last_aq_status));
8248                 goto bw_commit_out;
8249         }
8250         /* Write it back out unchanged to initiate update NVM,
8251          * which will force a write of the shadow (alt) RAM to
8252          * the NVM - thus storing the bandwidth values permanently.
8253          */
8254         ret = i40e_aq_update_nvm(&pf->hw,
8255                                  I40E_SR_NVM_CONTROL_WORD,
8256                                  0x10, sizeof(nvm_word),
8257                                  &nvm_word, true, NULL);
8258         /* Save off last admin queue command status before releasing
8259          * the NVM
8260          */
8261         last_aq_status = pf->hw.aq.asq_last_status;
8262         i40e_release_nvm(&pf->hw);
8263         if (ret)
8264                 dev_info(&pf->pdev->dev,
8265                          "BW settings NOT SAVED, err %s aq_err %s\n",
8266                          i40e_stat_str(&pf->hw, ret),
8267                          i40e_aq_str(&pf->hw, last_aq_status));
8268 bw_commit_out:
8269
8270         return ret;
8271 }
8272
8273 /**
8274  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
8275  * @pf: board private structure to initialize
8276  *
8277  * i40e_sw_init initializes the Adapter private data structure.
8278  * Fields are initialized based on PCI device information and
8279  * OS network device settings (MTU size).
8280  **/
8281 static int i40e_sw_init(struct i40e_pf *pf)
8282 {
8283         int err = 0;
8284         int size;
8285
8286         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
8287                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
8288         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
8289         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
8290                 if (I40E_DEBUG_USER & debug)
8291                         pf->hw.debug_mask = debug;
8292                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
8293                                                 I40E_DEFAULT_MSG_ENABLE);
8294         }
8295
8296         /* Set default capability flags */
8297         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
8298                     I40E_FLAG_MSI_ENABLED     |
8299                     I40E_FLAG_LINK_POLLING_ENABLED |
8300                     I40E_FLAG_MSIX_ENABLED;
8301
8302         if (iommu_present(&pci_bus_type))
8303                 pf->flags |= I40E_FLAG_RX_PS_ENABLED;
8304         else
8305                 pf->flags |= I40E_FLAG_RX_1BUF_ENABLED;
8306
8307         /* Set default ITR */
8308         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
8309         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
8310
8311         /* Depending on PF configurations, it is possible that the RSS
8312          * maximum might end up larger than the available queues
8313          */
8314         pf->rss_size_max = BIT(pf->hw.func_caps.rss_table_entry_width);
8315         pf->alloc_rss_size = 1;
8316         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
8317         pf->rss_size_max = min_t(int, pf->rss_size_max,
8318                                  pf->hw.func_caps.num_tx_qp);
8319         if (pf->hw.func_caps.rss) {
8320                 pf->flags |= I40E_FLAG_RSS_ENABLED;
8321                 pf->alloc_rss_size = min_t(int, pf->rss_size_max,
8322                                            num_online_cpus());
8323         }
8324
8325         /* MFP mode enabled */
8326         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.flex10_enable) {
8327                 pf->flags |= I40E_FLAG_MFP_ENABLED;
8328                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
8329                 if (i40e_get_npar_bw_setting(pf))
8330                         dev_warn(&pf->pdev->dev,
8331                                  "Could not get NPAR bw settings\n");
8332                 else
8333                         dev_info(&pf->pdev->dev,
8334                                  "Min BW = %8.8x, Max BW = %8.8x\n",
8335                                  pf->npar_min_bw, pf->npar_max_bw);
8336         }
8337
8338         /* FW/NVM is not yet fixed in this regard */
8339         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
8340             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
8341                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8342                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
8343                 if (pf->flags & I40E_FLAG_MFP_ENABLED &&
8344                     pf->hw.num_partitions > 1)
8345                         dev_info(&pf->pdev->dev,
8346                                  "Flow Director Sideband mode Disabled in MFP mode\n");
8347                 else
8348                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8349                 pf->fdir_pf_filter_count =
8350                                  pf->hw.func_caps.fd_filters_guaranteed;
8351                 pf->hw.fdir_shared_filter_count =
8352                                  pf->hw.func_caps.fd_filters_best_effort;
8353         }
8354
8355         if (pf->hw.func_caps.vmdq) {
8356                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
8357                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
8358                 pf->num_vmdq_qps = i40e_default_queues_per_vmdq(pf);
8359         }
8360
8361 #ifdef I40E_FCOE
8362         i40e_init_pf_fcoe(pf);
8363
8364 #endif /* I40E_FCOE */
8365 #ifdef CONFIG_PCI_IOV
8366         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
8367                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
8368                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
8369                 pf->num_req_vfs = min_t(int,
8370                                         pf->hw.func_caps.num_vfs,
8371                                         I40E_MAX_VF_COUNT);
8372         }
8373 #endif /* CONFIG_PCI_IOV */
8374         if (pf->hw.mac.type == I40E_MAC_X722) {
8375                 pf->flags |= I40E_FLAG_RSS_AQ_CAPABLE |
8376                              I40E_FLAG_128_QP_RSS_CAPABLE |
8377                              I40E_FLAG_HW_ATR_EVICT_CAPABLE |
8378                              I40E_FLAG_OUTER_UDP_CSUM_CAPABLE |
8379                              I40E_FLAG_WB_ON_ITR_CAPABLE |
8380                              I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE;
8381         }
8382         pf->eeprom_version = 0xDEAD;
8383         pf->lan_veb = I40E_NO_VEB;
8384         pf->lan_vsi = I40E_NO_VSI;
8385
8386         /* By default FW has this off for performance reasons */
8387         pf->flags &= ~I40E_FLAG_VEB_STATS_ENABLED;
8388
8389         /* set up queue assignment tracking */
8390         size = sizeof(struct i40e_lump_tracking)
8391                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
8392         pf->qp_pile = kzalloc(size, GFP_KERNEL);
8393         if (!pf->qp_pile) {
8394                 err = -ENOMEM;
8395                 goto sw_init_done;
8396         }
8397         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
8398         pf->qp_pile->search_hint = 0;
8399
8400         pf->tx_timeout_recovery_level = 1;
8401
8402         mutex_init(&pf->switch_mutex);
8403
8404         /* If NPAR is enabled nudge the Tx scheduler */
8405         if (pf->hw.func_caps.npar_enable && (!i40e_get_npar_bw_setting(pf)))
8406                 i40e_set_npar_bw_setting(pf);
8407
8408 sw_init_done:
8409         return err;
8410 }
8411
8412 /**
8413  * i40e_set_ntuple - set the ntuple feature flag and take action
8414  * @pf: board private structure to initialize
8415  * @features: the feature set that the stack is suggesting
8416  *
8417  * returns a bool to indicate if reset needs to happen
8418  **/
8419 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
8420 {
8421         bool need_reset = false;
8422
8423         /* Check if Flow Director n-tuple support was enabled or disabled.  If
8424          * the state changed, we need to reset.
8425          */
8426         if (features & NETIF_F_NTUPLE) {
8427                 /* Enable filters and mark for reset */
8428                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
8429                         need_reset = true;
8430                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8431         } else {
8432                 /* turn off filters, mark for reset and clear SW filter list */
8433                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8434                         need_reset = true;
8435                         i40e_fdir_filter_exit(pf);
8436                 }
8437                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8438                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
8439                 /* reset fd counters */
8440                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
8441                 pf->fdir_pf_active_filters = 0;
8442                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8443                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
8444                         dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
8445                 /* if ATR was auto disabled it can be re-enabled. */
8446                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
8447                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
8448                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
8449         }
8450         return need_reset;
8451 }
8452
8453 /**
8454  * i40e_set_features - set the netdev feature flags
8455  * @netdev: ptr to the netdev being adjusted
8456  * @features: the feature set that the stack is suggesting
8457  **/
8458 static int i40e_set_features(struct net_device *netdev,
8459                              netdev_features_t features)
8460 {
8461         struct i40e_netdev_priv *np = netdev_priv(netdev);
8462         struct i40e_vsi *vsi = np->vsi;
8463         struct i40e_pf *pf = vsi->back;
8464         bool need_reset;
8465
8466         if (features & NETIF_F_HW_VLAN_CTAG_RX)
8467                 i40e_vlan_stripping_enable(vsi);
8468         else
8469                 i40e_vlan_stripping_disable(vsi);
8470
8471         need_reset = i40e_set_ntuple(pf, features);
8472
8473         if (need_reset)
8474                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8475
8476         return 0;
8477 }
8478
8479 #ifdef CONFIG_I40E_VXLAN
8480 /**
8481  * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
8482  * @pf: board private structure
8483  * @port: The UDP port to look up
8484  *
8485  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
8486  **/
8487 static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
8488 {
8489         u8 i;
8490
8491         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
8492                 if (pf->vxlan_ports[i] == port)
8493                         return i;
8494         }
8495
8496         return i;
8497 }
8498
8499 /**
8500  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
8501  * @netdev: This physical port's netdev
8502  * @sa_family: Socket Family that VXLAN is notifying us about
8503  * @port: New UDP port number that VXLAN started listening to
8504  **/
8505 static void i40e_add_vxlan_port(struct net_device *netdev,
8506                                 sa_family_t sa_family, __be16 port)
8507 {
8508         struct i40e_netdev_priv *np = netdev_priv(netdev);
8509         struct i40e_vsi *vsi = np->vsi;
8510         struct i40e_pf *pf = vsi->back;
8511         u8 next_idx;
8512         u8 idx;
8513
8514         if (sa_family == AF_INET6)
8515                 return;
8516
8517         idx = i40e_get_vxlan_port_idx(pf, port);
8518
8519         /* Check if port already exists */
8520         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8521                 netdev_info(netdev, "vxlan port %d already offloaded\n",
8522                             ntohs(port));
8523                 return;
8524         }
8525
8526         /* Now check if there is space to add the new port */
8527         next_idx = i40e_get_vxlan_port_idx(pf, 0);
8528
8529         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8530                 netdev_info(netdev, "maximum number of vxlan UDP ports reached, not adding port %d\n",
8531                             ntohs(port));
8532                 return;
8533         }
8534
8535         /* New port: add it and mark its index in the bitmap */
8536         pf->vxlan_ports[next_idx] = port;
8537         pf->pending_vxlan_bitmap |= BIT_ULL(next_idx);
8538         pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
8539 }
8540
8541 /**
8542  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
8543  * @netdev: This physical port's netdev
8544  * @sa_family: Socket Family that VXLAN is notifying us about
8545  * @port: UDP port number that VXLAN stopped listening to
8546  **/
8547 static void i40e_del_vxlan_port(struct net_device *netdev,
8548                                 sa_family_t sa_family, __be16 port)
8549 {
8550         struct i40e_netdev_priv *np = netdev_priv(netdev);
8551         struct i40e_vsi *vsi = np->vsi;
8552         struct i40e_pf *pf = vsi->back;
8553         u8 idx;
8554
8555         if (sa_family == AF_INET6)
8556                 return;
8557
8558         idx = i40e_get_vxlan_port_idx(pf, port);
8559
8560         /* Check if port already exists */
8561         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8562                 /* if port exists, set it to 0 (mark for deletion)
8563                  * and make it pending
8564                  */
8565                 pf->vxlan_ports[idx] = 0;
8566                 pf->pending_vxlan_bitmap |= BIT_ULL(idx);
8567                 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
8568         } else {
8569                 netdev_warn(netdev, "vxlan port %d was not found, not deleting\n",
8570                             ntohs(port));
8571         }
8572 }
8573
8574 #endif
8575 static int i40e_get_phys_port_id(struct net_device *netdev,
8576                                  struct netdev_phys_item_id *ppid)
8577 {
8578         struct i40e_netdev_priv *np = netdev_priv(netdev);
8579         struct i40e_pf *pf = np->vsi->back;
8580         struct i40e_hw *hw = &pf->hw;
8581
8582         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
8583                 return -EOPNOTSUPP;
8584
8585         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
8586         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
8587
8588         return 0;
8589 }
8590
8591 /**
8592  * i40e_ndo_fdb_add - add an entry to the hardware database
8593  * @ndm: the input from the stack
8594  * @tb: pointer to array of nladdr (unused)
8595  * @dev: the net device pointer
8596  * @addr: the MAC address entry being added
8597  * @flags: instructions from stack about fdb operation
8598  */
8599 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
8600                             struct net_device *dev,
8601                             const unsigned char *addr, u16 vid,
8602                             u16 flags)
8603 {
8604         struct i40e_netdev_priv *np = netdev_priv(dev);
8605         struct i40e_pf *pf = np->vsi->back;
8606         int err = 0;
8607
8608         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
8609                 return -EOPNOTSUPP;
8610
8611         if (vid) {
8612                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
8613                 return -EINVAL;
8614         }
8615
8616         /* Hardware does not support aging addresses so if a
8617          * ndm_state is given only allow permanent addresses
8618          */
8619         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
8620                 netdev_info(dev, "FDB only supports static addresses\n");
8621                 return -EINVAL;
8622         }
8623
8624         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
8625                 err = dev_uc_add_excl(dev, addr);
8626         else if (is_multicast_ether_addr(addr))
8627                 err = dev_mc_add_excl(dev, addr);
8628         else
8629                 err = -EINVAL;
8630
8631         /* Only return duplicate errors if NLM_F_EXCL is set */
8632         if (err == -EEXIST && !(flags & NLM_F_EXCL))
8633                 err = 0;
8634
8635         return err;
8636 }
8637
8638 /**
8639  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
8640  * @dev: the netdev being configured
8641  * @nlh: RTNL message
8642  *
8643  * Inserts a new hardware bridge if not already created and
8644  * enables the bridging mode requested (VEB or VEPA). If the
8645  * hardware bridge has already been inserted and the request
8646  * is to change the mode then that requires a PF reset to
8647  * allow rebuild of the components with required hardware
8648  * bridge mode enabled.
8649  **/
8650 static int i40e_ndo_bridge_setlink(struct net_device *dev,
8651                                    struct nlmsghdr *nlh,
8652                                    u16 flags)
8653 {
8654         struct i40e_netdev_priv *np = netdev_priv(dev);
8655         struct i40e_vsi *vsi = np->vsi;
8656         struct i40e_pf *pf = vsi->back;
8657         struct i40e_veb *veb = NULL;
8658         struct nlattr *attr, *br_spec;
8659         int i, rem;
8660
8661         /* Only for PF VSI for now */
8662         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8663                 return -EOPNOTSUPP;
8664
8665         /* Find the HW bridge for PF VSI */
8666         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8667                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8668                         veb = pf->veb[i];
8669         }
8670
8671         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
8672
8673         nla_for_each_nested(attr, br_spec, rem) {
8674                 __u16 mode;
8675
8676                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
8677                         continue;
8678
8679                 mode = nla_get_u16(attr);
8680                 if ((mode != BRIDGE_MODE_VEPA) &&
8681                     (mode != BRIDGE_MODE_VEB))
8682                         return -EINVAL;
8683
8684                 /* Insert a new HW bridge */
8685                 if (!veb) {
8686                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8687                                              vsi->tc_config.enabled_tc);
8688                         if (veb) {
8689                                 veb->bridge_mode = mode;
8690                                 i40e_config_bridge_mode(veb);
8691                         } else {
8692                                 /* No Bridge HW offload available */
8693                                 return -ENOENT;
8694                         }
8695                         break;
8696                 } else if (mode != veb->bridge_mode) {
8697                         /* Existing HW bridge but different mode needs reset */
8698                         veb->bridge_mode = mode;
8699                         /* TODO: If no VFs or VMDq VSIs, disallow VEB mode */
8700                         if (mode == BRIDGE_MODE_VEB)
8701                                 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
8702                         else
8703                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
8704                         i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8705                         break;
8706                 }
8707         }
8708
8709         return 0;
8710 }
8711
8712 /**
8713  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
8714  * @skb: skb buff
8715  * @pid: process id
8716  * @seq: RTNL message seq #
8717  * @dev: the netdev being configured
8718  * @filter_mask: unused
8719  * @nlflags: netlink flags passed in
8720  *
8721  * Return the mode in which the hardware bridge is operating in
8722  * i.e VEB or VEPA.
8723  **/
8724 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
8725                                    struct net_device *dev,
8726                                    u32 __always_unused filter_mask,
8727                                    int nlflags)
8728 {
8729         struct i40e_netdev_priv *np = netdev_priv(dev);
8730         struct i40e_vsi *vsi = np->vsi;
8731         struct i40e_pf *pf = vsi->back;
8732         struct i40e_veb *veb = NULL;
8733         int i;
8734
8735         /* Only for PF VSI for now */
8736         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8737                 return -EOPNOTSUPP;
8738
8739         /* Find the HW bridge for the PF VSI */
8740         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8741                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8742                         veb = pf->veb[i];
8743         }
8744
8745         if (!veb)
8746                 return 0;
8747
8748         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
8749                                        nlflags, 0, 0, filter_mask, NULL);
8750 }
8751
8752 #define I40E_MAX_TUNNEL_HDR_LEN 80
8753 /**
8754  * i40e_features_check - Validate encapsulated packet conforms to limits
8755  * @skb: skb buff
8756  * @dev: This physical port's netdev
8757  * @features: Offload features that the stack believes apply
8758  **/
8759 static netdev_features_t i40e_features_check(struct sk_buff *skb,
8760                                              struct net_device *dev,
8761                                              netdev_features_t features)
8762 {
8763         if (skb->encapsulation &&
8764             (skb_inner_mac_header(skb) - skb_transport_header(skb) >
8765              I40E_MAX_TUNNEL_HDR_LEN))
8766                 return features & ~(NETIF_F_ALL_CSUM | NETIF_F_GSO_MASK);
8767
8768         return features;
8769 }
8770
8771 static const struct net_device_ops i40e_netdev_ops = {
8772         .ndo_open               = i40e_open,
8773         .ndo_stop               = i40e_close,
8774         .ndo_start_xmit         = i40e_lan_xmit_frame,
8775         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
8776         .ndo_set_rx_mode        = i40e_set_rx_mode,
8777         .ndo_validate_addr      = eth_validate_addr,
8778         .ndo_set_mac_address    = i40e_set_mac,
8779         .ndo_change_mtu         = i40e_change_mtu,
8780         .ndo_do_ioctl           = i40e_ioctl,
8781         .ndo_tx_timeout         = i40e_tx_timeout,
8782         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
8783         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
8784 #ifdef CONFIG_NET_POLL_CONTROLLER
8785         .ndo_poll_controller    = i40e_netpoll,
8786 #endif
8787         .ndo_setup_tc           = i40e_setup_tc,
8788 #ifdef I40E_FCOE
8789         .ndo_fcoe_enable        = i40e_fcoe_enable,
8790         .ndo_fcoe_disable       = i40e_fcoe_disable,
8791 #endif
8792         .ndo_set_features       = i40e_set_features,
8793         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
8794         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
8795         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
8796         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
8797         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
8798         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
8799 #ifdef CONFIG_I40E_VXLAN
8800         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
8801         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
8802 #endif
8803         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
8804         .ndo_fdb_add            = i40e_ndo_fdb_add,
8805         .ndo_features_check     = i40e_features_check,
8806         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
8807         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
8808 };
8809
8810 /**
8811  * i40e_config_netdev - Setup the netdev flags
8812  * @vsi: the VSI being configured
8813  *
8814  * Returns 0 on success, negative value on failure
8815  **/
8816 static int i40e_config_netdev(struct i40e_vsi *vsi)
8817 {
8818         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
8819         struct i40e_pf *pf = vsi->back;
8820         struct i40e_hw *hw = &pf->hw;
8821         struct i40e_netdev_priv *np;
8822         struct net_device *netdev;
8823         u8 mac_addr[ETH_ALEN];
8824         int etherdev_size;
8825
8826         etherdev_size = sizeof(struct i40e_netdev_priv);
8827         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
8828         if (!netdev)
8829                 return -ENOMEM;
8830
8831         vsi->netdev = netdev;
8832         np = netdev_priv(netdev);
8833         np->vsi = vsi;
8834
8835         netdev->hw_enc_features |= NETIF_F_IP_CSUM       |
8836                                   NETIF_F_GSO_UDP_TUNNEL |
8837                                   NETIF_F_GSO_GRE        |
8838                                   NETIF_F_TSO;
8839
8840         netdev->features = NETIF_F_SG                  |
8841                            NETIF_F_IP_CSUM             |
8842                            NETIF_F_SCTP_CSUM           |
8843                            NETIF_F_HIGHDMA             |
8844                            NETIF_F_GSO_UDP_TUNNEL      |
8845                            NETIF_F_GSO_GRE             |
8846                            NETIF_F_HW_VLAN_CTAG_TX     |
8847                            NETIF_F_HW_VLAN_CTAG_RX     |
8848                            NETIF_F_HW_VLAN_CTAG_FILTER |
8849                            NETIF_F_IPV6_CSUM           |
8850                            NETIF_F_TSO                 |
8851                            NETIF_F_TSO_ECN             |
8852                            NETIF_F_TSO6                |
8853                            NETIF_F_RXCSUM              |
8854                            NETIF_F_RXHASH              |
8855                            0;
8856
8857         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
8858                 netdev->features |= NETIF_F_NTUPLE;
8859
8860         /* copy netdev features into list of user selectable features */
8861         netdev->hw_features |= netdev->features;
8862
8863         if (vsi->type == I40E_VSI_MAIN) {
8864                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
8865                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
8866                 /* The following steps are necessary to prevent reception
8867                  * of tagged packets - some older NVM configurations load a
8868                  * default a MAC-VLAN filter that accepts any tagged packet
8869                  * which must be replaced by a normal filter.
8870                  */
8871                 if (!i40e_rm_default_mac_filter(vsi, mac_addr)) {
8872                         spin_lock_bh(&vsi->mac_filter_list_lock);
8873                         i40e_add_filter(vsi, mac_addr,
8874                                         I40E_VLAN_ANY, false, true);
8875                         spin_unlock_bh(&vsi->mac_filter_list_lock);
8876                 }
8877         } else {
8878                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
8879                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
8880                          pf->vsi[pf->lan_vsi]->netdev->name);
8881                 random_ether_addr(mac_addr);
8882
8883                 spin_lock_bh(&vsi->mac_filter_list_lock);
8884                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
8885                 spin_unlock_bh(&vsi->mac_filter_list_lock);
8886         }
8887
8888         spin_lock_bh(&vsi->mac_filter_list_lock);
8889         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
8890         spin_unlock_bh(&vsi->mac_filter_list_lock);
8891
8892         ether_addr_copy(netdev->dev_addr, mac_addr);
8893         ether_addr_copy(netdev->perm_addr, mac_addr);
8894         /* vlan gets same features (except vlan offload)
8895          * after any tweaks for specific VSI types
8896          */
8897         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
8898                                                      NETIF_F_HW_VLAN_CTAG_RX |
8899                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
8900         netdev->priv_flags |= IFF_UNICAST_FLT;
8901         netdev->priv_flags |= IFF_SUPP_NOFCS;
8902         /* Setup netdev TC information */
8903         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
8904
8905         netdev->netdev_ops = &i40e_netdev_ops;
8906         netdev->watchdog_timeo = 5 * HZ;
8907         i40e_set_ethtool_ops(netdev);
8908 #ifdef I40E_FCOE
8909         i40e_fcoe_config_netdev(netdev, vsi);
8910 #endif
8911
8912         return 0;
8913 }
8914
8915 /**
8916  * i40e_vsi_delete - Delete a VSI from the switch
8917  * @vsi: the VSI being removed
8918  *
8919  * Returns 0 on success, negative value on failure
8920  **/
8921 static void i40e_vsi_delete(struct i40e_vsi *vsi)
8922 {
8923         /* remove default VSI is not allowed */
8924         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
8925                 return;
8926
8927         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
8928 }
8929
8930 /**
8931  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
8932  * @vsi: the VSI being queried
8933  *
8934  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
8935  **/
8936 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
8937 {
8938         struct i40e_veb *veb;
8939         struct i40e_pf *pf = vsi->back;
8940
8941         /* Uplink is not a bridge so default to VEB */
8942         if (vsi->veb_idx == I40E_NO_VEB)
8943                 return 1;
8944
8945         veb = pf->veb[vsi->veb_idx];
8946         if (!veb) {
8947                 dev_info(&pf->pdev->dev,
8948                          "There is no veb associated with the bridge\n");
8949                 return -ENOENT;
8950         }
8951
8952         /* Uplink is a bridge in VEPA mode */
8953         if (veb->bridge_mode & BRIDGE_MODE_VEPA) {
8954                 return 0;
8955         } else {
8956                 /* Uplink is a bridge in VEB mode */
8957                 return 1;
8958         }
8959
8960         /* VEPA is now default bridge, so return 0 */
8961         return 0;
8962 }
8963
8964 /**
8965  * i40e_add_vsi - Add a VSI to the switch
8966  * @vsi: the VSI being configured
8967  *
8968  * This initializes a VSI context depending on the VSI type to be added and
8969  * passes it down to the add_vsi aq command.
8970  **/
8971 static int i40e_add_vsi(struct i40e_vsi *vsi)
8972 {
8973         int ret = -ENODEV;
8974         u8 laa_macaddr[ETH_ALEN];
8975         bool found_laa_mac_filter = false;
8976         struct i40e_pf *pf = vsi->back;
8977         struct i40e_hw *hw = &pf->hw;
8978         struct i40e_vsi_context ctxt;
8979         struct i40e_mac_filter *f, *ftmp;
8980
8981         u8 enabled_tc = 0x1; /* TC0 enabled */
8982         int f_count = 0;
8983
8984         memset(&ctxt, 0, sizeof(ctxt));
8985         switch (vsi->type) {
8986         case I40E_VSI_MAIN:
8987                 /* The PF's main VSI is already setup as part of the
8988                  * device initialization, so we'll not bother with
8989                  * the add_vsi call, but we will retrieve the current
8990                  * VSI context.
8991                  */
8992                 ctxt.seid = pf->main_vsi_seid;
8993                 ctxt.pf_num = pf->hw.pf_id;
8994                 ctxt.vf_num = 0;
8995                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
8996                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8997                 if (ret) {
8998                         dev_info(&pf->pdev->dev,
8999                                  "couldn't get PF vsi config, err %s aq_err %s\n",
9000                                  i40e_stat_str(&pf->hw, ret),
9001                                  i40e_aq_str(&pf->hw,
9002                                              pf->hw.aq.asq_last_status));
9003                         return -ENOENT;
9004                 }
9005                 vsi->info = ctxt.info;
9006                 vsi->info.valid_sections = 0;
9007
9008                 vsi->seid = ctxt.seid;
9009                 vsi->id = ctxt.vsi_number;
9010
9011                 enabled_tc = i40e_pf_get_tc_map(pf);
9012
9013                 /* MFP mode setup queue map and update VSI */
9014                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
9015                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
9016                         memset(&ctxt, 0, sizeof(ctxt));
9017                         ctxt.seid = pf->main_vsi_seid;
9018                         ctxt.pf_num = pf->hw.pf_id;
9019                         ctxt.vf_num = 0;
9020                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
9021                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
9022                         if (ret) {
9023                                 dev_info(&pf->pdev->dev,
9024                                          "update vsi failed, err %s aq_err %s\n",
9025                                          i40e_stat_str(&pf->hw, ret),
9026                                          i40e_aq_str(&pf->hw,
9027                                                     pf->hw.aq.asq_last_status));
9028                                 ret = -ENOENT;
9029                                 goto err;
9030                         }
9031                         /* update the local VSI info queue map */
9032                         i40e_vsi_update_queue_map(vsi, &ctxt);
9033                         vsi->info.valid_sections = 0;
9034                 } else {
9035                         /* Default/Main VSI is only enabled for TC0
9036                          * reconfigure it to enable all TCs that are
9037                          * available on the port in SFP mode.
9038                          * For MFP case the iSCSI PF would use this
9039                          * flow to enable LAN+iSCSI TC.
9040                          */
9041                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
9042                         if (ret) {
9043                                 dev_info(&pf->pdev->dev,
9044                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %s aq_err %s\n",
9045                                          enabled_tc,
9046                                          i40e_stat_str(&pf->hw, ret),
9047                                          i40e_aq_str(&pf->hw,
9048                                                     pf->hw.aq.asq_last_status));
9049                                 ret = -ENOENT;
9050                         }
9051                 }
9052                 break;
9053
9054         case I40E_VSI_FDIR:
9055                 ctxt.pf_num = hw->pf_id;
9056                 ctxt.vf_num = 0;
9057                 ctxt.uplink_seid = vsi->uplink_seid;
9058                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9059                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9060                 if ((pf->flags & I40E_FLAG_VEB_MODE_ENABLED) &&
9061                     (i40e_is_vsi_uplink_mode_veb(vsi))) {
9062                         ctxt.info.valid_sections |=
9063                              cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9064                         ctxt.info.switch_id =
9065                            cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9066                 }
9067                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9068                 break;
9069
9070         case I40E_VSI_VMDQ2:
9071                 ctxt.pf_num = hw->pf_id;
9072                 ctxt.vf_num = 0;
9073                 ctxt.uplink_seid = vsi->uplink_seid;
9074                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9075                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
9076
9077                 /* This VSI is connected to VEB so the switch_id
9078                  * should be set to zero by default.
9079                  */
9080                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
9081                         ctxt.info.valid_sections |=
9082                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9083                         ctxt.info.switch_id =
9084                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9085                 }
9086
9087                 /* Setup the VSI tx/rx queue map for TC0 only for now */
9088                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9089                 break;
9090
9091         case I40E_VSI_SRIOV:
9092                 ctxt.pf_num = hw->pf_id;
9093                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
9094                 ctxt.uplink_seid = vsi->uplink_seid;
9095                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9096                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
9097
9098                 /* This VSI is connected to VEB so the switch_id
9099                  * should be set to zero by default.
9100                  */
9101                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
9102                         ctxt.info.valid_sections |=
9103                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9104                         ctxt.info.switch_id =
9105                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9106                 }
9107
9108                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
9109                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
9110                 if (pf->vf[vsi->vf_id].spoofchk) {
9111                         ctxt.info.valid_sections |=
9112                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
9113                         ctxt.info.sec_flags |=
9114                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
9115                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
9116                 }
9117                 /* Setup the VSI tx/rx queue map for TC0 only for now */
9118                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9119                 break;
9120
9121 #ifdef I40E_FCOE
9122         case I40E_VSI_FCOE:
9123                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
9124                 if (ret) {
9125                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
9126                         return ret;
9127                 }
9128                 break;
9129
9130 #endif /* I40E_FCOE */
9131         default:
9132                 return -ENODEV;
9133         }
9134
9135         if (vsi->type != I40E_VSI_MAIN) {
9136                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
9137                 if (ret) {
9138                         dev_info(&vsi->back->pdev->dev,
9139                                  "add vsi failed, err %s aq_err %s\n",
9140                                  i40e_stat_str(&pf->hw, ret),
9141                                  i40e_aq_str(&pf->hw,
9142                                              pf->hw.aq.asq_last_status));
9143                         ret = -ENOENT;
9144                         goto err;
9145                 }
9146                 vsi->info = ctxt.info;
9147                 vsi->info.valid_sections = 0;
9148                 vsi->seid = ctxt.seid;
9149                 vsi->id = ctxt.vsi_number;
9150         }
9151
9152         spin_lock_bh(&vsi->mac_filter_list_lock);
9153         /* If macvlan filters already exist, force them to get loaded */
9154         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
9155                 f->changed = true;
9156                 f_count++;
9157
9158                 /* Expected to have only one MAC filter entry for LAA in list */
9159                 if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
9160                         ether_addr_copy(laa_macaddr, f->macaddr);
9161                         found_laa_mac_filter = true;
9162                 }
9163         }
9164         spin_unlock_bh(&vsi->mac_filter_list_lock);
9165
9166         if (found_laa_mac_filter) {
9167                 struct i40e_aqc_remove_macvlan_element_data element;
9168
9169                 memset(&element, 0, sizeof(element));
9170                 ether_addr_copy(element.mac_addr, laa_macaddr);
9171                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
9172                 ret = i40e_aq_remove_macvlan(hw, vsi->seid,
9173                                              &element, 1, NULL);
9174                 if (ret) {
9175                         /* some older FW has a different default */
9176                         element.flags |=
9177                                        I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
9178                         i40e_aq_remove_macvlan(hw, vsi->seid,
9179                                                &element, 1, NULL);
9180                 }
9181
9182                 i40e_aq_mac_address_write(hw,
9183                                           I40E_AQC_WRITE_TYPE_LAA_WOL,
9184                                           laa_macaddr, NULL);
9185         }
9186
9187         if (f_count) {
9188                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
9189                 pf->flags |= I40E_FLAG_FILTER_SYNC;
9190         }
9191
9192         /* Update VSI BW information */
9193         ret = i40e_vsi_get_bw_info(vsi);
9194         if (ret) {
9195                 dev_info(&pf->pdev->dev,
9196                          "couldn't get vsi bw info, err %s aq_err %s\n",
9197                          i40e_stat_str(&pf->hw, ret),
9198                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9199                 /* VSI is already added so not tearing that up */
9200                 ret = 0;
9201         }
9202
9203 err:
9204         return ret;
9205 }
9206
9207 /**
9208  * i40e_vsi_release - Delete a VSI and free its resources
9209  * @vsi: the VSI being removed
9210  *
9211  * Returns 0 on success or < 0 on error
9212  **/
9213 int i40e_vsi_release(struct i40e_vsi *vsi)
9214 {
9215         struct i40e_mac_filter *f, *ftmp;
9216         struct i40e_veb *veb = NULL;
9217         struct i40e_pf *pf;
9218         u16 uplink_seid;
9219         int i, n;
9220
9221         pf = vsi->back;
9222
9223         /* release of a VEB-owner or last VSI is not allowed */
9224         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
9225                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
9226                          vsi->seid, vsi->uplink_seid);
9227                 return -ENODEV;
9228         }
9229         if (vsi == pf->vsi[pf->lan_vsi] &&
9230             !test_bit(__I40E_DOWN, &pf->state)) {
9231                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
9232                 return -ENODEV;
9233         }
9234
9235         uplink_seid = vsi->uplink_seid;
9236         if (vsi->type != I40E_VSI_SRIOV) {
9237                 if (vsi->netdev_registered) {
9238                         vsi->netdev_registered = false;
9239                         if (vsi->netdev) {
9240                                 /* results in a call to i40e_close() */
9241                                 unregister_netdev(vsi->netdev);
9242                         }
9243                 } else {
9244                         i40e_vsi_close(vsi);
9245                 }
9246                 i40e_vsi_disable_irq(vsi);
9247         }
9248
9249         spin_lock_bh(&vsi->mac_filter_list_lock);
9250         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
9251                 i40e_del_filter(vsi, f->macaddr, f->vlan,
9252                                 f->is_vf, f->is_netdev);
9253         spin_unlock_bh(&vsi->mac_filter_list_lock);
9254
9255         i40e_sync_vsi_filters(vsi);
9256
9257         i40e_vsi_delete(vsi);
9258         i40e_vsi_free_q_vectors(vsi);
9259         if (vsi->netdev) {
9260                 free_netdev(vsi->netdev);
9261                 vsi->netdev = NULL;
9262         }
9263         i40e_vsi_clear_rings(vsi);
9264         i40e_vsi_clear(vsi);
9265
9266         /* If this was the last thing on the VEB, except for the
9267          * controlling VSI, remove the VEB, which puts the controlling
9268          * VSI onto the next level down in the switch.
9269          *
9270          * Well, okay, there's one more exception here: don't remove
9271          * the orphan VEBs yet.  We'll wait for an explicit remove request
9272          * from up the network stack.
9273          */
9274         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
9275                 if (pf->vsi[i] &&
9276                     pf->vsi[i]->uplink_seid == uplink_seid &&
9277                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9278                         n++;      /* count the VSIs */
9279                 }
9280         }
9281         for (i = 0; i < I40E_MAX_VEB; i++) {
9282                 if (!pf->veb[i])
9283                         continue;
9284                 if (pf->veb[i]->uplink_seid == uplink_seid)
9285                         n++;     /* count the VEBs */
9286                 if (pf->veb[i]->seid == uplink_seid)
9287                         veb = pf->veb[i];
9288         }
9289         if (n == 0 && veb && veb->uplink_seid != 0)
9290                 i40e_veb_release(veb);
9291
9292         return 0;
9293 }
9294
9295 /**
9296  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
9297  * @vsi: ptr to the VSI
9298  *
9299  * This should only be called after i40e_vsi_mem_alloc() which allocates the
9300  * corresponding SW VSI structure and initializes num_queue_pairs for the
9301  * newly allocated VSI.
9302  *
9303  * Returns 0 on success or negative on failure
9304  **/
9305 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
9306 {
9307         int ret = -ENOENT;
9308         struct i40e_pf *pf = vsi->back;
9309
9310         if (vsi->q_vectors[0]) {
9311                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
9312                          vsi->seid);
9313                 return -EEXIST;
9314         }
9315
9316         if (vsi->base_vector) {
9317                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
9318                          vsi->seid, vsi->base_vector);
9319                 return -EEXIST;
9320         }
9321
9322         ret = i40e_vsi_alloc_q_vectors(vsi);
9323         if (ret) {
9324                 dev_info(&pf->pdev->dev,
9325                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
9326                          vsi->num_q_vectors, vsi->seid, ret);
9327                 vsi->num_q_vectors = 0;
9328                 goto vector_setup_out;
9329         }
9330
9331         /* In Legacy mode, we do not have to get any other vector since we
9332          * piggyback on the misc/ICR0 for queue interrupts.
9333         */
9334         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
9335                 return ret;
9336         if (vsi->num_q_vectors)
9337                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
9338                                                  vsi->num_q_vectors, vsi->idx);
9339         if (vsi->base_vector < 0) {
9340                 dev_info(&pf->pdev->dev,
9341                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
9342                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
9343                 i40e_vsi_free_q_vectors(vsi);
9344                 ret = -ENOENT;
9345                 goto vector_setup_out;
9346         }
9347
9348 vector_setup_out:
9349         return ret;
9350 }
9351
9352 /**
9353  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
9354  * @vsi: pointer to the vsi.
9355  *
9356  * This re-allocates a vsi's queue resources.
9357  *
9358  * Returns pointer to the successfully allocated and configured VSI sw struct
9359  * on success, otherwise returns NULL on failure.
9360  **/
9361 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
9362 {
9363         struct i40e_pf *pf = vsi->back;
9364         u8 enabled_tc;
9365         int ret;
9366
9367         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
9368         i40e_vsi_clear_rings(vsi);
9369
9370         i40e_vsi_free_arrays(vsi, false);
9371         i40e_set_num_rings_in_vsi(vsi);
9372         ret = i40e_vsi_alloc_arrays(vsi, false);
9373         if (ret)
9374                 goto err_vsi;
9375
9376         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
9377         if (ret < 0) {
9378                 dev_info(&pf->pdev->dev,
9379                          "failed to get tracking for %d queues for VSI %d err %d\n",
9380                          vsi->alloc_queue_pairs, vsi->seid, ret);
9381                 goto err_vsi;
9382         }
9383         vsi->base_queue = ret;
9384
9385         /* Update the FW view of the VSI. Force a reset of TC and queue
9386          * layout configurations.
9387          */
9388         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
9389         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
9390         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
9391         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
9392
9393         /* assign it some queues */
9394         ret = i40e_alloc_rings(vsi);
9395         if (ret)
9396                 goto err_rings;
9397
9398         /* map all of the rings to the q_vectors */
9399         i40e_vsi_map_rings_to_vectors(vsi);
9400         return vsi;
9401
9402 err_rings:
9403         i40e_vsi_free_q_vectors(vsi);
9404         if (vsi->netdev_registered) {
9405                 vsi->netdev_registered = false;
9406                 unregister_netdev(vsi->netdev);
9407                 free_netdev(vsi->netdev);
9408                 vsi->netdev = NULL;
9409         }
9410         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9411 err_vsi:
9412         i40e_vsi_clear(vsi);
9413         return NULL;
9414 }
9415
9416 /**
9417  * i40e_vsi_setup - Set up a VSI by a given type
9418  * @pf: board private structure
9419  * @type: VSI type
9420  * @uplink_seid: the switch element to link to
9421  * @param1: usage depends upon VSI type. For VF types, indicates VF id
9422  *
9423  * This allocates the sw VSI structure and its queue resources, then add a VSI
9424  * to the identified VEB.
9425  *
9426  * Returns pointer to the successfully allocated and configure VSI sw struct on
9427  * success, otherwise returns NULL on failure.
9428  **/
9429 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
9430                                 u16 uplink_seid, u32 param1)
9431 {
9432         struct i40e_vsi *vsi = NULL;
9433         struct i40e_veb *veb = NULL;
9434         int ret, i;
9435         int v_idx;
9436
9437         /* The requested uplink_seid must be either
9438          *     - the PF's port seid
9439          *              no VEB is needed because this is the PF
9440          *              or this is a Flow Director special case VSI
9441          *     - seid of an existing VEB
9442          *     - seid of a VSI that owns an existing VEB
9443          *     - seid of a VSI that doesn't own a VEB
9444          *              a new VEB is created and the VSI becomes the owner
9445          *     - seid of the PF VSI, which is what creates the first VEB
9446          *              this is a special case of the previous
9447          *
9448          * Find which uplink_seid we were given and create a new VEB if needed
9449          */
9450         for (i = 0; i < I40E_MAX_VEB; i++) {
9451                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
9452                         veb = pf->veb[i];
9453                         break;
9454                 }
9455         }
9456
9457         if (!veb && uplink_seid != pf->mac_seid) {
9458
9459                 for (i = 0; i < pf->num_alloc_vsi; i++) {
9460                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
9461                                 vsi = pf->vsi[i];
9462                                 break;
9463                         }
9464                 }
9465                 if (!vsi) {
9466                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
9467                                  uplink_seid);
9468                         return NULL;
9469                 }
9470
9471                 if (vsi->uplink_seid == pf->mac_seid)
9472                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
9473                                              vsi->tc_config.enabled_tc);
9474                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
9475                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
9476                                              vsi->tc_config.enabled_tc);
9477                 if (veb) {
9478                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
9479                                 dev_info(&vsi->back->pdev->dev,
9480                                          "New VSI creation error, uplink seid of LAN VSI expected.\n");
9481                                 return NULL;
9482                         }
9483                         /* We come up by default in VEPA mode if SRIOV is not
9484                          * already enabled, in which case we can't force VEPA
9485                          * mode.
9486                          */
9487                         if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
9488                                 veb->bridge_mode = BRIDGE_MODE_VEPA;
9489                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
9490                         }
9491                         i40e_config_bridge_mode(veb);
9492                 }
9493                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9494                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9495                                 veb = pf->veb[i];
9496                 }
9497                 if (!veb) {
9498                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
9499                         return NULL;
9500                 }
9501
9502                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9503                 uplink_seid = veb->seid;
9504         }
9505
9506         /* get vsi sw struct */
9507         v_idx = i40e_vsi_mem_alloc(pf, type);
9508         if (v_idx < 0)
9509                 goto err_alloc;
9510         vsi = pf->vsi[v_idx];
9511         if (!vsi)
9512                 goto err_alloc;
9513         vsi->type = type;
9514         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
9515
9516         if (type == I40E_VSI_MAIN)
9517                 pf->lan_vsi = v_idx;
9518         else if (type == I40E_VSI_SRIOV)
9519                 vsi->vf_id = param1;
9520         /* assign it some queues */
9521         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
9522                                 vsi->idx);
9523         if (ret < 0) {
9524                 dev_info(&pf->pdev->dev,
9525                          "failed to get tracking for %d queues for VSI %d err=%d\n",
9526                          vsi->alloc_queue_pairs, vsi->seid, ret);
9527                 goto err_vsi;
9528         }
9529         vsi->base_queue = ret;
9530
9531         /* get a VSI from the hardware */
9532         vsi->uplink_seid = uplink_seid;
9533         ret = i40e_add_vsi(vsi);
9534         if (ret)
9535                 goto err_vsi;
9536
9537         switch (vsi->type) {
9538         /* setup the netdev if needed */
9539         case I40E_VSI_MAIN:
9540         case I40E_VSI_VMDQ2:
9541         case I40E_VSI_FCOE:
9542                 ret = i40e_config_netdev(vsi);
9543                 if (ret)
9544                         goto err_netdev;
9545                 ret = register_netdev(vsi->netdev);
9546                 if (ret)
9547                         goto err_netdev;
9548                 vsi->netdev_registered = true;
9549                 netif_carrier_off(vsi->netdev);
9550 #ifdef CONFIG_I40E_DCB
9551                 /* Setup DCB netlink interface */
9552                 i40e_dcbnl_setup(vsi);
9553 #endif /* CONFIG_I40E_DCB */
9554                 /* fall through */
9555
9556         case I40E_VSI_FDIR:
9557                 /* set up vectors and rings if needed */
9558                 ret = i40e_vsi_setup_vectors(vsi);
9559                 if (ret)
9560                         goto err_msix;
9561
9562                 ret = i40e_alloc_rings(vsi);
9563                 if (ret)
9564                         goto err_rings;
9565
9566                 /* map all of the rings to the q_vectors */
9567                 i40e_vsi_map_rings_to_vectors(vsi);
9568
9569                 i40e_vsi_reset_stats(vsi);
9570                 break;
9571
9572         default:
9573                 /* no netdev or rings for the other VSI types */
9574                 break;
9575         }
9576
9577         if ((pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) &&
9578             (vsi->type == I40E_VSI_VMDQ2)) {
9579                 ret = i40e_vsi_config_rss(vsi);
9580         }
9581         return vsi;
9582
9583 err_rings:
9584         i40e_vsi_free_q_vectors(vsi);
9585 err_msix:
9586         if (vsi->netdev_registered) {
9587                 vsi->netdev_registered = false;
9588                 unregister_netdev(vsi->netdev);
9589                 free_netdev(vsi->netdev);
9590                 vsi->netdev = NULL;
9591         }
9592 err_netdev:
9593         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9594 err_vsi:
9595         i40e_vsi_clear(vsi);
9596 err_alloc:
9597         return NULL;
9598 }
9599
9600 /**
9601  * i40e_veb_get_bw_info - Query VEB BW information
9602  * @veb: the veb to query
9603  *
9604  * Query the Tx scheduler BW configuration data for given VEB
9605  **/
9606 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
9607 {
9608         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
9609         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
9610         struct i40e_pf *pf = veb->pf;
9611         struct i40e_hw *hw = &pf->hw;
9612         u32 tc_bw_max;
9613         int ret = 0;
9614         int i;
9615
9616         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
9617                                                   &bw_data, NULL);
9618         if (ret) {
9619                 dev_info(&pf->pdev->dev,
9620                          "query veb bw config failed, err %s aq_err %s\n",
9621                          i40e_stat_str(&pf->hw, ret),
9622                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9623                 goto out;
9624         }
9625
9626         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
9627                                                    &ets_data, NULL);
9628         if (ret) {
9629                 dev_info(&pf->pdev->dev,
9630                          "query veb bw ets config failed, err %s aq_err %s\n",
9631                          i40e_stat_str(&pf->hw, ret),
9632                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9633                 goto out;
9634         }
9635
9636         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
9637         veb->bw_max_quanta = ets_data.tc_bw_max;
9638         veb->is_abs_credits = bw_data.absolute_credits_enable;
9639         veb->enabled_tc = ets_data.tc_valid_bits;
9640         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
9641                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
9642         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
9643                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
9644                 veb->bw_tc_limit_credits[i] =
9645                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
9646                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
9647         }
9648
9649 out:
9650         return ret;
9651 }
9652
9653 /**
9654  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
9655  * @pf: board private structure
9656  *
9657  * On error: returns error code (negative)
9658  * On success: returns vsi index in PF (positive)
9659  **/
9660 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
9661 {
9662         int ret = -ENOENT;
9663         struct i40e_veb *veb;
9664         int i;
9665
9666         /* Need to protect the allocation of switch elements at the PF level */
9667         mutex_lock(&pf->switch_mutex);
9668
9669         /* VEB list may be fragmented if VEB creation/destruction has
9670          * been happening.  We can afford to do a quick scan to look
9671          * for any free slots in the list.
9672          *
9673          * find next empty veb slot, looping back around if necessary
9674          */
9675         i = 0;
9676         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
9677                 i++;
9678         if (i >= I40E_MAX_VEB) {
9679                 ret = -ENOMEM;
9680                 goto err_alloc_veb;  /* out of VEB slots! */
9681         }
9682
9683         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
9684         if (!veb) {
9685                 ret = -ENOMEM;
9686                 goto err_alloc_veb;
9687         }
9688         veb->pf = pf;
9689         veb->idx = i;
9690         veb->enabled_tc = 1;
9691
9692         pf->veb[i] = veb;
9693         ret = i;
9694 err_alloc_veb:
9695         mutex_unlock(&pf->switch_mutex);
9696         return ret;
9697 }
9698
9699 /**
9700  * i40e_switch_branch_release - Delete a branch of the switch tree
9701  * @branch: where to start deleting
9702  *
9703  * This uses recursion to find the tips of the branch to be
9704  * removed, deleting until we get back to and can delete this VEB.
9705  **/
9706 static void i40e_switch_branch_release(struct i40e_veb *branch)
9707 {
9708         struct i40e_pf *pf = branch->pf;
9709         u16 branch_seid = branch->seid;
9710         u16 veb_idx = branch->idx;
9711         int i;
9712
9713         /* release any VEBs on this VEB - RECURSION */
9714         for (i = 0; i < I40E_MAX_VEB; i++) {
9715                 if (!pf->veb[i])
9716                         continue;
9717                 if (pf->veb[i]->uplink_seid == branch->seid)
9718                         i40e_switch_branch_release(pf->veb[i]);
9719         }
9720
9721         /* Release the VSIs on this VEB, but not the owner VSI.
9722          *
9723          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
9724          *       the VEB itself, so don't use (*branch) after this loop.
9725          */
9726         for (i = 0; i < pf->num_alloc_vsi; i++) {
9727                 if (!pf->vsi[i])
9728                         continue;
9729                 if (pf->vsi[i]->uplink_seid == branch_seid &&
9730                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9731                         i40e_vsi_release(pf->vsi[i]);
9732                 }
9733         }
9734
9735         /* There's one corner case where the VEB might not have been
9736          * removed, so double check it here and remove it if needed.
9737          * This case happens if the veb was created from the debugfs
9738          * commands and no VSIs were added to it.
9739          */
9740         if (pf->veb[veb_idx])
9741                 i40e_veb_release(pf->veb[veb_idx]);
9742 }
9743
9744 /**
9745  * i40e_veb_clear - remove veb struct
9746  * @veb: the veb to remove
9747  **/
9748 static void i40e_veb_clear(struct i40e_veb *veb)
9749 {
9750         if (!veb)
9751                 return;
9752
9753         if (veb->pf) {
9754                 struct i40e_pf *pf = veb->pf;
9755
9756                 mutex_lock(&pf->switch_mutex);
9757                 if (pf->veb[veb->idx] == veb)
9758                         pf->veb[veb->idx] = NULL;
9759                 mutex_unlock(&pf->switch_mutex);
9760         }
9761
9762         kfree(veb);
9763 }
9764
9765 /**
9766  * i40e_veb_release - Delete a VEB and free its resources
9767  * @veb: the VEB being removed
9768  **/
9769 void i40e_veb_release(struct i40e_veb *veb)
9770 {
9771         struct i40e_vsi *vsi = NULL;
9772         struct i40e_pf *pf;
9773         int i, n = 0;
9774
9775         pf = veb->pf;
9776
9777         /* find the remaining VSI and check for extras */
9778         for (i = 0; i < pf->num_alloc_vsi; i++) {
9779                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
9780                         n++;
9781                         vsi = pf->vsi[i];
9782                 }
9783         }
9784         if (n != 1) {
9785                 dev_info(&pf->pdev->dev,
9786                          "can't remove VEB %d with %d VSIs left\n",
9787                          veb->seid, n);
9788                 return;
9789         }
9790
9791         /* move the remaining VSI to uplink veb */
9792         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
9793         if (veb->uplink_seid) {
9794                 vsi->uplink_seid = veb->uplink_seid;
9795                 if (veb->uplink_seid == pf->mac_seid)
9796                         vsi->veb_idx = I40E_NO_VEB;
9797                 else
9798                         vsi->veb_idx = veb->veb_idx;
9799         } else {
9800                 /* floating VEB */
9801                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
9802                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
9803         }
9804
9805         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
9806         i40e_veb_clear(veb);
9807 }
9808
9809 /**
9810  * i40e_add_veb - create the VEB in the switch
9811  * @veb: the VEB to be instantiated
9812  * @vsi: the controlling VSI
9813  **/
9814 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
9815 {
9816         struct i40e_pf *pf = veb->pf;
9817         bool is_default = veb->pf->cur_promisc;
9818         bool is_cloud = false;
9819         int ret;
9820
9821         /* get a VEB from the hardware */
9822         ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid,
9823                               veb->enabled_tc, is_default,
9824                               is_cloud, &veb->seid, NULL);
9825         if (ret) {
9826                 dev_info(&pf->pdev->dev,
9827                          "couldn't add VEB, err %s aq_err %s\n",
9828                          i40e_stat_str(&pf->hw, ret),
9829                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9830                 return -EPERM;
9831         }
9832
9833         /* get statistics counter */
9834         ret = i40e_aq_get_veb_parameters(&pf->hw, veb->seid, NULL, NULL,
9835                                          &veb->stats_idx, NULL, NULL, NULL);
9836         if (ret) {
9837                 dev_info(&pf->pdev->dev,
9838                          "couldn't get VEB statistics idx, err %s aq_err %s\n",
9839                          i40e_stat_str(&pf->hw, ret),
9840                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9841                 return -EPERM;
9842         }
9843         ret = i40e_veb_get_bw_info(veb);
9844         if (ret) {
9845                 dev_info(&pf->pdev->dev,
9846                          "couldn't get VEB bw info, err %s aq_err %s\n",
9847                          i40e_stat_str(&pf->hw, ret),
9848                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9849                 i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
9850                 return -ENOENT;
9851         }
9852
9853         vsi->uplink_seid = veb->seid;
9854         vsi->veb_idx = veb->idx;
9855         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9856
9857         return 0;
9858 }
9859
9860 /**
9861  * i40e_veb_setup - Set up a VEB
9862  * @pf: board private structure
9863  * @flags: VEB setup flags
9864  * @uplink_seid: the switch element to link to
9865  * @vsi_seid: the initial VSI seid
9866  * @enabled_tc: Enabled TC bit-map
9867  *
9868  * This allocates the sw VEB structure and links it into the switch
9869  * It is possible and legal for this to be a duplicate of an already
9870  * existing VEB.  It is also possible for both uplink and vsi seids
9871  * to be zero, in order to create a floating VEB.
9872  *
9873  * Returns pointer to the successfully allocated VEB sw struct on
9874  * success, otherwise returns NULL on failure.
9875  **/
9876 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
9877                                 u16 uplink_seid, u16 vsi_seid,
9878                                 u8 enabled_tc)
9879 {
9880         struct i40e_veb *veb, *uplink_veb = NULL;
9881         int vsi_idx, veb_idx;
9882         int ret;
9883
9884         /* if one seid is 0, the other must be 0 to create a floating relay */
9885         if ((uplink_seid == 0 || vsi_seid == 0) &&
9886             (uplink_seid + vsi_seid != 0)) {
9887                 dev_info(&pf->pdev->dev,
9888                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
9889                          uplink_seid, vsi_seid);
9890                 return NULL;
9891         }
9892
9893         /* make sure there is such a vsi and uplink */
9894         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
9895                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
9896                         break;
9897         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
9898                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
9899                          vsi_seid);
9900                 return NULL;
9901         }
9902
9903         if (uplink_seid && uplink_seid != pf->mac_seid) {
9904                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
9905                         if (pf->veb[veb_idx] &&
9906                             pf->veb[veb_idx]->seid == uplink_seid) {
9907                                 uplink_veb = pf->veb[veb_idx];
9908                                 break;
9909                         }
9910                 }
9911                 if (!uplink_veb) {
9912                         dev_info(&pf->pdev->dev,
9913                                  "uplink seid %d not found\n", uplink_seid);
9914                         return NULL;
9915                 }
9916         }
9917
9918         /* get veb sw struct */
9919         veb_idx = i40e_veb_mem_alloc(pf);
9920         if (veb_idx < 0)
9921                 goto err_alloc;
9922         veb = pf->veb[veb_idx];
9923         veb->flags = flags;
9924         veb->uplink_seid = uplink_seid;
9925         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
9926         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
9927
9928         /* create the VEB in the switch */
9929         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
9930         if (ret)
9931                 goto err_veb;
9932         if (vsi_idx == pf->lan_vsi)
9933                 pf->lan_veb = veb->idx;
9934
9935         return veb;
9936
9937 err_veb:
9938         i40e_veb_clear(veb);
9939 err_alloc:
9940         return NULL;
9941 }
9942
9943 /**
9944  * i40e_setup_pf_switch_element - set PF vars based on switch type
9945  * @pf: board private structure
9946  * @ele: element we are building info from
9947  * @num_reported: total number of elements
9948  * @printconfig: should we print the contents
9949  *
9950  * helper function to assist in extracting a few useful SEID values.
9951  **/
9952 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
9953                                 struct i40e_aqc_switch_config_element_resp *ele,
9954                                 u16 num_reported, bool printconfig)
9955 {
9956         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
9957         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
9958         u8 element_type = ele->element_type;
9959         u16 seid = le16_to_cpu(ele->seid);
9960
9961         if (printconfig)
9962                 dev_info(&pf->pdev->dev,
9963                          "type=%d seid=%d uplink=%d downlink=%d\n",
9964                          element_type, seid, uplink_seid, downlink_seid);
9965
9966         switch (element_type) {
9967         case I40E_SWITCH_ELEMENT_TYPE_MAC:
9968                 pf->mac_seid = seid;
9969                 break;
9970         case I40E_SWITCH_ELEMENT_TYPE_VEB:
9971                 /* Main VEB? */
9972                 if (uplink_seid != pf->mac_seid)
9973                         break;
9974                 if (pf->lan_veb == I40E_NO_VEB) {
9975                         int v;
9976
9977                         /* find existing or else empty VEB */
9978                         for (v = 0; v < I40E_MAX_VEB; v++) {
9979                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
9980                                         pf->lan_veb = v;
9981                                         break;
9982                                 }
9983                         }
9984                         if (pf->lan_veb == I40E_NO_VEB) {
9985                                 v = i40e_veb_mem_alloc(pf);
9986                                 if (v < 0)
9987                                         break;
9988                                 pf->lan_veb = v;
9989                         }
9990                 }
9991
9992                 pf->veb[pf->lan_veb]->seid = seid;
9993                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
9994                 pf->veb[pf->lan_veb]->pf = pf;
9995                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
9996                 break;
9997         case I40E_SWITCH_ELEMENT_TYPE_VSI:
9998                 if (num_reported != 1)
9999                         break;
10000                 /* This is immediately after a reset so we can assume this is
10001                  * the PF's VSI
10002                  */
10003                 pf->mac_seid = uplink_seid;
10004                 pf->pf_seid = downlink_seid;
10005                 pf->main_vsi_seid = seid;
10006                 if (printconfig)
10007                         dev_info(&pf->pdev->dev,
10008                                  "pf_seid=%d main_vsi_seid=%d\n",
10009                                  pf->pf_seid, pf->main_vsi_seid);
10010                 break;
10011         case I40E_SWITCH_ELEMENT_TYPE_PF:
10012         case I40E_SWITCH_ELEMENT_TYPE_VF:
10013         case I40E_SWITCH_ELEMENT_TYPE_EMP:
10014         case I40E_SWITCH_ELEMENT_TYPE_BMC:
10015         case I40E_SWITCH_ELEMENT_TYPE_PE:
10016         case I40E_SWITCH_ELEMENT_TYPE_PA:
10017                 /* ignore these for now */
10018                 break;
10019         default:
10020                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
10021                          element_type, seid);
10022                 break;
10023         }
10024 }
10025
10026 /**
10027  * i40e_fetch_switch_configuration - Get switch config from firmware
10028  * @pf: board private structure
10029  * @printconfig: should we print the contents
10030  *
10031  * Get the current switch configuration from the device and
10032  * extract a few useful SEID values.
10033  **/
10034 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
10035 {
10036         struct i40e_aqc_get_switch_config_resp *sw_config;
10037         u16 next_seid = 0;
10038         int ret = 0;
10039         u8 *aq_buf;
10040         int i;
10041
10042         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
10043         if (!aq_buf)
10044                 return -ENOMEM;
10045
10046         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
10047         do {
10048                 u16 num_reported, num_total;
10049
10050                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
10051                                                 I40E_AQ_LARGE_BUF,
10052                                                 &next_seid, NULL);
10053                 if (ret) {
10054                         dev_info(&pf->pdev->dev,
10055                                  "get switch config failed err %s aq_err %s\n",
10056                                  i40e_stat_str(&pf->hw, ret),
10057                                  i40e_aq_str(&pf->hw,
10058                                              pf->hw.aq.asq_last_status));
10059                         kfree(aq_buf);
10060                         return -ENOENT;
10061                 }
10062
10063                 num_reported = le16_to_cpu(sw_config->header.num_reported);
10064                 num_total = le16_to_cpu(sw_config->header.num_total);
10065
10066                 if (printconfig)
10067                         dev_info(&pf->pdev->dev,
10068                                  "header: %d reported %d total\n",
10069                                  num_reported, num_total);
10070
10071                 for (i = 0; i < num_reported; i++) {
10072                         struct i40e_aqc_switch_config_element_resp *ele =
10073                                 &sw_config->element[i];
10074
10075                         i40e_setup_pf_switch_element(pf, ele, num_reported,
10076                                                      printconfig);
10077                 }
10078         } while (next_seid != 0);
10079
10080         kfree(aq_buf);
10081         return ret;
10082 }
10083
10084 /**
10085  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
10086  * @pf: board private structure
10087  * @reinit: if the Main VSI needs to re-initialized.
10088  *
10089  * Returns 0 on success, negative value on failure
10090  **/
10091 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
10092 {
10093         int ret;
10094
10095         /* find out what's out there already */
10096         ret = i40e_fetch_switch_configuration(pf, false);
10097         if (ret) {
10098                 dev_info(&pf->pdev->dev,
10099                          "couldn't fetch switch config, err %s aq_err %s\n",
10100                          i40e_stat_str(&pf->hw, ret),
10101                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10102                 return ret;
10103         }
10104         i40e_pf_reset_stats(pf);
10105
10106         /* first time setup */
10107         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
10108                 struct i40e_vsi *vsi = NULL;
10109                 u16 uplink_seid;
10110
10111                 /* Set up the PF VSI associated with the PF's main VSI
10112                  * that is already in the HW switch
10113                  */
10114                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
10115                         uplink_seid = pf->veb[pf->lan_veb]->seid;
10116                 else
10117                         uplink_seid = pf->mac_seid;
10118                 if (pf->lan_vsi == I40E_NO_VSI)
10119                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
10120                 else if (reinit)
10121                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
10122                 if (!vsi) {
10123                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
10124                         i40e_fdir_teardown(pf);
10125                         return -EAGAIN;
10126                 }
10127         } else {
10128                 /* force a reset of TC and queue layout configurations */
10129                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
10130
10131                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
10132                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
10133                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
10134         }
10135         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
10136
10137         i40e_fdir_sb_setup(pf);
10138
10139         /* Setup static PF queue filter control settings */
10140         ret = i40e_setup_pf_filter_control(pf);
10141         if (ret) {
10142                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
10143                          ret);
10144                 /* Failure here should not stop continuing other steps */
10145         }
10146
10147         /* enable RSS in the HW, even for only one queue, as the stack can use
10148          * the hash
10149          */
10150         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
10151                 i40e_pf_config_rss(pf);
10152
10153         /* fill in link information and enable LSE reporting */
10154         i40e_update_link_info(&pf->hw);
10155         i40e_link_event(pf);
10156
10157         /* Initialize user-specific link properties */
10158         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
10159                                   I40E_AQ_AN_COMPLETED) ? true : false);
10160
10161         i40e_ptp_init(pf);
10162
10163         return ret;
10164 }
10165
10166 /**
10167  * i40e_determine_queue_usage - Work out queue distribution
10168  * @pf: board private structure
10169  **/
10170 static void i40e_determine_queue_usage(struct i40e_pf *pf)
10171 {
10172         int queues_left;
10173
10174         pf->num_lan_qps = 0;
10175 #ifdef I40E_FCOE
10176         pf->num_fcoe_qps = 0;
10177 #endif
10178
10179         /* Find the max queues to be put into basic use.  We'll always be
10180          * using TC0, whether or not DCB is running, and TC0 will get the
10181          * big RSS set.
10182          */
10183         queues_left = pf->hw.func_caps.num_tx_qp;
10184
10185         if ((queues_left == 1) ||
10186             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
10187                 /* one qp for PF, no queues for anything else */
10188                 queues_left = 0;
10189                 pf->alloc_rss_size = pf->num_lan_qps = 1;
10190
10191                 /* make sure all the fancies are disabled */
10192                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10193 #ifdef I40E_FCOE
10194                                I40E_FLAG_FCOE_ENABLED   |
10195 #endif
10196                                I40E_FLAG_FD_SB_ENABLED  |
10197                                I40E_FLAG_FD_ATR_ENABLED |
10198                                I40E_FLAG_DCB_CAPABLE    |
10199                                I40E_FLAG_SRIOV_ENABLED  |
10200                                I40E_FLAG_VMDQ_ENABLED);
10201         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
10202                                   I40E_FLAG_FD_SB_ENABLED |
10203                                   I40E_FLAG_FD_ATR_ENABLED |
10204                                   I40E_FLAG_DCB_CAPABLE))) {
10205                 /* one qp for PF */
10206                 pf->alloc_rss_size = pf->num_lan_qps = 1;
10207                 queues_left -= pf->num_lan_qps;
10208
10209                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10210 #ifdef I40E_FCOE
10211                                I40E_FLAG_FCOE_ENABLED   |
10212 #endif
10213                                I40E_FLAG_FD_SB_ENABLED  |
10214                                I40E_FLAG_FD_ATR_ENABLED |
10215                                I40E_FLAG_DCB_ENABLED    |
10216                                I40E_FLAG_VMDQ_ENABLED);
10217         } else {
10218                 /* Not enough queues for all TCs */
10219                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
10220                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
10221                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10222                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
10223                 }
10224                 pf->num_lan_qps = max_t(int, pf->rss_size_max,
10225                                         num_online_cpus());
10226                 pf->num_lan_qps = min_t(int, pf->num_lan_qps,
10227                                         pf->hw.func_caps.num_tx_qp);
10228
10229                 queues_left -= pf->num_lan_qps;
10230         }
10231
10232 #ifdef I40E_FCOE
10233         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
10234                 if (I40E_DEFAULT_FCOE <= queues_left) {
10235                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
10236                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
10237                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
10238                 } else {
10239                         pf->num_fcoe_qps = 0;
10240                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
10241                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
10242                 }
10243
10244                 queues_left -= pf->num_fcoe_qps;
10245         }
10246
10247 #endif
10248         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10249                 if (queues_left > 1) {
10250                         queues_left -= 1; /* save 1 queue for FD */
10251                 } else {
10252                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
10253                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
10254                 }
10255         }
10256
10257         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10258             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
10259                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
10260                                         (queues_left / pf->num_vf_qps));
10261                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
10262         }
10263
10264         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
10265             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
10266                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
10267                                           (queues_left / pf->num_vmdq_qps));
10268                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
10269         }
10270
10271         pf->queues_left = queues_left;
10272         dev_dbg(&pf->pdev->dev,
10273                 "qs_avail=%d FD SB=%d lan_qs=%d lan_tc0=%d vf=%d*%d vmdq=%d*%d, remaining=%d\n",
10274                 pf->hw.func_caps.num_tx_qp,
10275                 !!(pf->flags & I40E_FLAG_FD_SB_ENABLED),
10276                 pf->num_lan_qps, pf->alloc_rss_size, pf->num_req_vfs,
10277                 pf->num_vf_qps, pf->num_vmdq_vsis, pf->num_vmdq_qps,
10278                 queues_left);
10279 #ifdef I40E_FCOE
10280         dev_dbg(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
10281 #endif
10282 }
10283
10284 /**
10285  * i40e_setup_pf_filter_control - Setup PF static filter control
10286  * @pf: PF to be setup
10287  *
10288  * i40e_setup_pf_filter_control sets up a PF's initial filter control
10289  * settings. If PE/FCoE are enabled then it will also set the per PF
10290  * based filter sizes required for them. It also enables Flow director,
10291  * ethertype and macvlan type filter settings for the pf.
10292  *
10293  * Returns 0 on success, negative on failure
10294  **/
10295 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
10296 {
10297         struct i40e_filter_control_settings *settings = &pf->filter_settings;
10298
10299         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
10300
10301         /* Flow Director is enabled */
10302         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
10303                 settings->enable_fdir = true;
10304
10305         /* Ethtype and MACVLAN filters enabled for PF */
10306         settings->enable_ethtype = true;
10307         settings->enable_macvlan = true;
10308
10309         if (i40e_set_filter_control(&pf->hw, settings))
10310                 return -ENOENT;
10311
10312         return 0;
10313 }
10314
10315 #define INFO_STRING_LEN 255
10316 #define REMAIN(__x) (INFO_STRING_LEN - (__x))
10317 static void i40e_print_features(struct i40e_pf *pf)
10318 {
10319         struct i40e_hw *hw = &pf->hw;
10320         char *buf;
10321         int i;
10322
10323         buf = kmalloc(INFO_STRING_LEN, GFP_KERNEL);
10324         if (!buf)
10325                 return;
10326
10327         i = snprintf(buf, INFO_STRING_LEN, "Features: PF-id[%d]", hw->pf_id);
10328 #ifdef CONFIG_PCI_IOV
10329         i += snprintf(&buf[i], REMAIN(i), " VFs: %d", pf->num_req_vfs);
10330 #endif
10331         i += snprintf(&buf[i], REMAIN(i), " VSIs: %d QP: %d RX: %s",
10332                       pf->hw.func_caps.num_vsis,
10333                       pf->vsi[pf->lan_vsi]->num_queue_pairs,
10334                       pf->flags & I40E_FLAG_RX_PS_ENABLED ? "PS" : "1BUF");
10335
10336         if (pf->flags & I40E_FLAG_RSS_ENABLED)
10337                 i += snprintf(&buf[i], REMAIN(i), " RSS");
10338         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
10339                 i += snprintf(&buf[i], REMAIN(i), " FD_ATR");
10340         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10341                 i += snprintf(&buf[i], REMAIN(i), " FD_SB");
10342                 i += snprintf(&buf[i], REMAIN(i), " NTUPLE");
10343         }
10344         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
10345                 i += snprintf(&buf[i], REMAIN(i), " DCB");
10346 #if IS_ENABLED(CONFIG_VXLAN)
10347         i += snprintf(&buf[i], REMAIN(i), " VxLAN");
10348 #endif
10349         if (pf->flags & I40E_FLAG_PTP)
10350                 i += snprintf(&buf[i], REMAIN(i), " PTP");
10351 #ifdef I40E_FCOE
10352         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
10353                 i += snprintf(&buf[i], REMAIN(i), " FCOE");
10354 #endif
10355         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
10356                 i += snprintf(&buf[i], REMAIN(i), " VEB");
10357         else
10358                 i += snprintf(&buf[i], REMAIN(i), " VEPA");
10359
10360         dev_info(&pf->pdev->dev, "%s\n", buf);
10361         kfree(buf);
10362         WARN_ON(i > INFO_STRING_LEN);
10363 }
10364
10365 /**
10366  * i40e_probe - Device initialization routine
10367  * @pdev: PCI device information struct
10368  * @ent: entry in i40e_pci_tbl
10369  *
10370  * i40e_probe initializes a PF identified by a pci_dev structure.
10371  * The OS initialization, configuring of the PF private structure,
10372  * and a hardware reset occur.
10373  *
10374  * Returns 0 on success, negative on failure
10375  **/
10376 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
10377 {
10378         struct i40e_aq_get_phy_abilities_resp abilities;
10379         struct i40e_pf *pf;
10380         struct i40e_hw *hw;
10381         static u16 pfs_found;
10382         u16 wol_nvm_bits;
10383         u16 link_status;
10384         int err;
10385         u32 len;
10386         u32 val;
10387         u32 i;
10388         u8 set_fc_aq_fail;
10389
10390         err = pci_enable_device_mem(pdev);
10391         if (err)
10392                 return err;
10393
10394         /* set up for high or low dma */
10395         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
10396         if (err) {
10397                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
10398                 if (err) {
10399                         dev_err(&pdev->dev,
10400                                 "DMA configuration failed: 0x%x\n", err);
10401                         goto err_dma;
10402                 }
10403         }
10404
10405         /* set up pci connections */
10406         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
10407                                            IORESOURCE_MEM), i40e_driver_name);
10408         if (err) {
10409                 dev_info(&pdev->dev,
10410                          "pci_request_selected_regions failed %d\n", err);
10411                 goto err_pci_reg;
10412         }
10413
10414         pci_enable_pcie_error_reporting(pdev);
10415         pci_set_master(pdev);
10416
10417         /* Now that we have a PCI connection, we need to do the
10418          * low level device setup.  This is primarily setting up
10419          * the Admin Queue structures and then querying for the
10420          * device's current profile information.
10421          */
10422         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
10423         if (!pf) {
10424                 err = -ENOMEM;
10425                 goto err_pf_alloc;
10426         }
10427         pf->next_vsi = 0;
10428         pf->pdev = pdev;
10429         set_bit(__I40E_DOWN, &pf->state);
10430
10431         hw = &pf->hw;
10432         hw->back = pf;
10433
10434         pf->ioremap_len = min_t(int, pci_resource_len(pdev, 0),
10435                                 I40E_MAX_CSR_SPACE);
10436
10437         hw->hw_addr = ioremap(pci_resource_start(pdev, 0), pf->ioremap_len);
10438         if (!hw->hw_addr) {
10439                 err = -EIO;
10440                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
10441                          (unsigned int)pci_resource_start(pdev, 0),
10442                          pf->ioremap_len, err);
10443                 goto err_ioremap;
10444         }
10445         hw->vendor_id = pdev->vendor;
10446         hw->device_id = pdev->device;
10447         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
10448         hw->subsystem_vendor_id = pdev->subsystem_vendor;
10449         hw->subsystem_device_id = pdev->subsystem_device;
10450         hw->bus.device = PCI_SLOT(pdev->devfn);
10451         hw->bus.func = PCI_FUNC(pdev->devfn);
10452         pf->instance = pfs_found;
10453
10454         if (debug != -1) {
10455                 pf->msg_enable = pf->hw.debug_mask;
10456                 pf->msg_enable = debug;
10457         }
10458
10459         /* do a special CORER for clearing PXE mode once at init */
10460         if (hw->revision_id == 0 &&
10461             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
10462                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
10463                 i40e_flush(hw);
10464                 msleep(200);
10465                 pf->corer_count++;
10466
10467                 i40e_clear_pxe_mode(hw);
10468         }
10469
10470         /* Reset here to make sure all is clean and to define PF 'n' */
10471         i40e_clear_hw(hw);
10472         err = i40e_pf_reset(hw);
10473         if (err) {
10474                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
10475                 goto err_pf_reset;
10476         }
10477         pf->pfr_count++;
10478
10479         hw->aq.num_arq_entries = I40E_AQ_LEN;
10480         hw->aq.num_asq_entries = I40E_AQ_LEN;
10481         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10482         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10483         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
10484
10485         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
10486                  "%s-%s:misc",
10487                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
10488
10489         err = i40e_init_shared_code(hw);
10490         if (err) {
10491                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
10492                          err);
10493                 goto err_pf_reset;
10494         }
10495
10496         /* set up a default setting for link flow control */
10497         pf->hw.fc.requested_mode = I40E_FC_NONE;
10498
10499         err = i40e_init_adminq(hw);
10500         if (err) {
10501                 if (err == I40E_ERR_FIRMWARE_API_VERSION)
10502                         dev_info(&pdev->dev,
10503                                  "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");
10504                 else
10505                         dev_info(&pdev->dev,
10506                                  "The driver for the device stopped because the device firmware failed to init. Try updating your NVM image.\n");
10507
10508                 goto err_pf_reset;
10509         }
10510
10511         /* provide nvm, fw, api versions */
10512         dev_info(&pdev->dev, "fw %d.%d.%05d api %d.%d nvm %s\n",
10513                  hw->aq.fw_maj_ver, hw->aq.fw_min_ver, hw->aq.fw_build,
10514                  hw->aq.api_maj_ver, hw->aq.api_min_ver,
10515                  i40e_nvm_version_str(hw));
10516
10517         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
10518             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
10519                 dev_info(&pdev->dev,
10520                          "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");
10521         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
10522                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
10523                 dev_info(&pdev->dev,
10524                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
10525
10526         i40e_verify_eeprom(pf);
10527
10528         /* Rev 0 hardware was never productized */
10529         if (hw->revision_id < 1)
10530                 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");
10531
10532         i40e_clear_pxe_mode(hw);
10533         err = i40e_get_capabilities(pf);
10534         if (err)
10535                 goto err_adminq_setup;
10536
10537         err = i40e_sw_init(pf);
10538         if (err) {
10539                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
10540                 goto err_sw_init;
10541         }
10542
10543         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
10544                                 hw->func_caps.num_rx_qp,
10545                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
10546         if (err) {
10547                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
10548                 goto err_init_lan_hmc;
10549         }
10550
10551         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
10552         if (err) {
10553                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
10554                 err = -ENOENT;
10555                 goto err_configure_lan_hmc;
10556         }
10557
10558         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
10559          * Ignore error return codes because if it was already disabled via
10560          * hardware settings this will fail
10561          */
10562         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
10563             (pf->hw.aq.fw_maj_ver < 4)) {
10564                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
10565                 i40e_aq_stop_lldp(hw, true, NULL);
10566         }
10567
10568         i40e_get_mac_addr(hw, hw->mac.addr);
10569         if (!is_valid_ether_addr(hw->mac.addr)) {
10570                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
10571                 err = -EIO;
10572                 goto err_mac_addr;
10573         }
10574         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
10575         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
10576         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
10577         if (is_valid_ether_addr(hw->mac.port_addr))
10578                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
10579 #ifdef I40E_FCOE
10580         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
10581         if (err)
10582                 dev_info(&pdev->dev,
10583                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
10584         if (!is_valid_ether_addr(hw->mac.san_addr)) {
10585                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
10586                          hw->mac.san_addr);
10587                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
10588         }
10589         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
10590 #endif /* I40E_FCOE */
10591
10592         pci_set_drvdata(pdev, pf);
10593         pci_save_state(pdev);
10594 #ifdef CONFIG_I40E_DCB
10595         err = i40e_init_pf_dcb(pf);
10596         if (err) {
10597                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
10598                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10599                 /* Continue without DCB enabled */
10600         }
10601 #endif /* CONFIG_I40E_DCB */
10602
10603         /* set up periodic task facility */
10604         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
10605         pf->service_timer_period = HZ;
10606
10607         INIT_WORK(&pf->service_task, i40e_service_task);
10608         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
10609         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
10610
10611         /* NVM bit on means WoL disabled for the port */
10612         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
10613         if (BIT (hw->port) & wol_nvm_bits || hw->partition_id != 1)
10614                 pf->wol_en = false;
10615         else
10616                 pf->wol_en = true;
10617         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
10618
10619         /* set up the main switch operations */
10620         i40e_determine_queue_usage(pf);
10621         err = i40e_init_interrupt_scheme(pf);
10622         if (err)
10623                 goto err_switch_setup;
10624
10625         /* The number of VSIs reported by the FW is the minimum guaranteed
10626          * to us; HW supports far more and we share the remaining pool with
10627          * the other PFs. We allocate space for more than the guarantee with
10628          * the understanding that we might not get them all later.
10629          */
10630         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
10631                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
10632         else
10633                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
10634
10635         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
10636         len = sizeof(struct i40e_vsi *) * pf->num_alloc_vsi;
10637         pf->vsi = kzalloc(len, GFP_KERNEL);
10638         if (!pf->vsi) {
10639                 err = -ENOMEM;
10640                 goto err_switch_setup;
10641         }
10642
10643 #ifdef CONFIG_PCI_IOV
10644         /* prep for VF support */
10645         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10646             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10647             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10648                 if (pci_num_vf(pdev))
10649                         pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
10650         }
10651 #endif
10652         err = i40e_setup_pf_switch(pf, false);
10653         if (err) {
10654                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
10655                 goto err_vsis;
10656         }
10657
10658         /* Make sure flow control is set according to current settings */
10659         err = i40e_set_fc(hw, &set_fc_aq_fail, true);
10660         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_GET)
10661                 dev_dbg(&pf->pdev->dev,
10662                         "Set fc with err %s aq_err %s on get_phy_cap\n",
10663                         i40e_stat_str(hw, err),
10664                         i40e_aq_str(hw, hw->aq.asq_last_status));
10665         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_SET)
10666                 dev_dbg(&pf->pdev->dev,
10667                         "Set fc with err %s aq_err %s on set_phy_config\n",
10668                         i40e_stat_str(hw, err),
10669                         i40e_aq_str(hw, hw->aq.asq_last_status));
10670         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_UPDATE)
10671                 dev_dbg(&pf->pdev->dev,
10672                         "Set fc with err %s aq_err %s on get_link_info\n",
10673                         i40e_stat_str(hw, err),
10674                         i40e_aq_str(hw, hw->aq.asq_last_status));
10675
10676         /* if FDIR VSI was set up, start it now */
10677         for (i = 0; i < pf->num_alloc_vsi; i++) {
10678                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
10679                         i40e_vsi_open(pf->vsi[i]);
10680                         break;
10681                 }
10682         }
10683
10684         /* driver is only interested in link up/down and module qualification
10685          * reports from firmware
10686          */
10687         err = i40e_aq_set_phy_int_mask(&pf->hw,
10688                                        I40E_AQ_EVENT_LINK_UPDOWN |
10689                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
10690         if (err)
10691                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
10692                          i40e_stat_str(&pf->hw, err),
10693                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10694
10695         /* Reconfigure hardware for allowing smaller MSS in the case
10696          * of TSO, so that we avoid the MDD being fired and causing
10697          * a reset in the case of small MSS+TSO.
10698          */
10699         val = rd32(hw, I40E_REG_MSS);
10700         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
10701                 val &= ~I40E_REG_MSS_MIN_MASK;
10702                 val |= I40E_64BYTE_MSS;
10703                 wr32(hw, I40E_REG_MSS, val);
10704         }
10705
10706         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
10707             (pf->hw.aq.fw_maj_ver < 4)) {
10708                 msleep(75);
10709                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
10710                 if (err)
10711                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
10712                                  i40e_stat_str(&pf->hw, err),
10713                                  i40e_aq_str(&pf->hw,
10714                                              pf->hw.aq.asq_last_status));
10715         }
10716         /* The main driver is (mostly) up and happy. We need to set this state
10717          * before setting up the misc vector or we get a race and the vector
10718          * ends up disabled forever.
10719          */
10720         clear_bit(__I40E_DOWN, &pf->state);
10721
10722         /* In case of MSIX we are going to setup the misc vector right here
10723          * to handle admin queue events etc. In case of legacy and MSI
10724          * the misc functionality and queue processing is combined in
10725          * the same vector and that gets setup at open.
10726          */
10727         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
10728                 err = i40e_setup_misc_vector(pf);
10729                 if (err) {
10730                         dev_info(&pdev->dev,
10731                                  "setup of misc vector failed: %d\n", err);
10732                         goto err_vsis;
10733                 }
10734         }
10735
10736 #ifdef CONFIG_PCI_IOV
10737         /* prep for VF support */
10738         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10739             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10740             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10741                 u32 val;
10742
10743                 /* disable link interrupts for VFs */
10744                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
10745                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
10746                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
10747                 i40e_flush(hw);
10748
10749                 if (pci_num_vf(pdev)) {
10750                         dev_info(&pdev->dev,
10751                                  "Active VFs found, allocating resources.\n");
10752                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
10753                         if (err)
10754                                 dev_info(&pdev->dev,
10755                                          "Error %d allocating resources for existing VFs\n",
10756                                          err);
10757                 }
10758         }
10759 #endif /* CONFIG_PCI_IOV */
10760
10761         pfs_found++;
10762
10763         i40e_dbg_pf_init(pf);
10764
10765         /* tell the firmware that we're starting */
10766         i40e_send_version(pf);
10767
10768         /* since everything's happy, start the service_task timer */
10769         mod_timer(&pf->service_timer,
10770                   round_jiffies(jiffies + pf->service_timer_period));
10771
10772 #ifdef I40E_FCOE
10773         /* create FCoE interface */
10774         i40e_fcoe_vsi_setup(pf);
10775
10776 #endif
10777 #define PCI_SPEED_SIZE 8
10778 #define PCI_WIDTH_SIZE 8
10779         /* Devices on the IOSF bus do not have this information
10780          * and will report PCI Gen 1 x 1 by default so don't bother
10781          * checking them.
10782          */
10783         if (!(pf->flags & I40E_FLAG_NO_PCI_LINK_CHECK)) {
10784                 char speed[PCI_SPEED_SIZE] = "Unknown";
10785                 char width[PCI_WIDTH_SIZE] = "Unknown";
10786
10787                 /* Get the negotiated link width and speed from PCI config
10788                  * space
10789                  */
10790                 pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA,
10791                                           &link_status);
10792
10793                 i40e_set_pci_config_data(hw, link_status);
10794
10795                 switch (hw->bus.speed) {
10796                 case i40e_bus_speed_8000:
10797                         strncpy(speed, "8.0", PCI_SPEED_SIZE); break;
10798                 case i40e_bus_speed_5000:
10799                         strncpy(speed, "5.0", PCI_SPEED_SIZE); break;
10800                 case i40e_bus_speed_2500:
10801                         strncpy(speed, "2.5", PCI_SPEED_SIZE); break;
10802                 default:
10803                         break;
10804                 }
10805                 switch (hw->bus.width) {
10806                 case i40e_bus_width_pcie_x8:
10807                         strncpy(width, "8", PCI_WIDTH_SIZE); break;
10808                 case i40e_bus_width_pcie_x4:
10809                         strncpy(width, "4", PCI_WIDTH_SIZE); break;
10810                 case i40e_bus_width_pcie_x2:
10811                         strncpy(width, "2", PCI_WIDTH_SIZE); break;
10812                 case i40e_bus_width_pcie_x1:
10813                         strncpy(width, "1", PCI_WIDTH_SIZE); break;
10814                 default:
10815                         break;
10816                 }
10817
10818                 dev_info(&pdev->dev, "PCI-Express: Speed %sGT/s Width x%s\n",
10819                          speed, width);
10820
10821                 if (hw->bus.width < i40e_bus_width_pcie_x8 ||
10822                     hw->bus.speed < i40e_bus_speed_8000) {
10823                         dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
10824                         dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
10825                 }
10826         }
10827
10828         /* get the requested speeds from the fw */
10829         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
10830         if (err)
10831                 dev_dbg(&pf->pdev->dev, "get requested speeds ret =  %s last_status =  %s\n",
10832                         i40e_stat_str(&pf->hw, err),
10833                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10834         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
10835
10836         /* get the supported phy types from the fw */
10837         err = i40e_aq_get_phy_capabilities(hw, false, true, &abilities, NULL);
10838         if (err)
10839                 dev_dbg(&pf->pdev->dev, "get supported phy types ret =  %s last_status =  %s\n",
10840                         i40e_stat_str(&pf->hw, err),
10841                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10842         pf->hw.phy.phy_types = le32_to_cpu(abilities.phy_type);
10843
10844         /* Add a filter to drop all Flow control frames from any VSI from being
10845          * transmitted. By doing so we stop a malicious VF from sending out
10846          * PAUSE or PFC frames and potentially controlling traffic for other
10847          * PF/VF VSIs.
10848          * The FW can still send Flow control frames if enabled.
10849          */
10850         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
10851                                                        pf->main_vsi_seid);
10852
10853         /* print a string summarizing features */
10854         i40e_print_features(pf);
10855
10856         return 0;
10857
10858         /* Unwind what we've done if something failed in the setup */
10859 err_vsis:
10860         set_bit(__I40E_DOWN, &pf->state);
10861         i40e_clear_interrupt_scheme(pf);
10862         kfree(pf->vsi);
10863 err_switch_setup:
10864         i40e_reset_interrupt_capability(pf);
10865         del_timer_sync(&pf->service_timer);
10866 err_mac_addr:
10867 err_configure_lan_hmc:
10868         (void)i40e_shutdown_lan_hmc(hw);
10869 err_init_lan_hmc:
10870         kfree(pf->qp_pile);
10871 err_sw_init:
10872 err_adminq_setup:
10873         (void)i40e_shutdown_adminq(hw);
10874 err_pf_reset:
10875         iounmap(hw->hw_addr);
10876 err_ioremap:
10877         kfree(pf);
10878 err_pf_alloc:
10879         pci_disable_pcie_error_reporting(pdev);
10880         pci_release_selected_regions(pdev,
10881                                      pci_select_bars(pdev, IORESOURCE_MEM));
10882 err_pci_reg:
10883 err_dma:
10884         pci_disable_device(pdev);
10885         return err;
10886 }
10887
10888 /**
10889  * i40e_remove - Device removal routine
10890  * @pdev: PCI device information struct
10891  *
10892  * i40e_remove is called by the PCI subsystem to alert the driver
10893  * that is should release a PCI device.  This could be caused by a
10894  * Hot-Plug event, or because the driver is going to be removed from
10895  * memory.
10896  **/
10897 static void i40e_remove(struct pci_dev *pdev)
10898 {
10899         struct i40e_pf *pf = pci_get_drvdata(pdev);
10900         struct i40e_hw *hw = &pf->hw;
10901         i40e_status ret_code;
10902         int i;
10903
10904         i40e_dbg_pf_exit(pf);
10905
10906         i40e_ptp_stop(pf);
10907
10908         /* Disable RSS in hw */
10909         wr32(hw, I40E_PFQF_HENA(0), 0);
10910         wr32(hw, I40E_PFQF_HENA(1), 0);
10911
10912         /* no more scheduling of any task */
10913         set_bit(__I40E_DOWN, &pf->state);
10914         del_timer_sync(&pf->service_timer);
10915         cancel_work_sync(&pf->service_task);
10916         i40e_fdir_teardown(pf);
10917
10918         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
10919                 i40e_free_vfs(pf);
10920                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
10921         }
10922
10923         i40e_fdir_teardown(pf);
10924
10925         /* If there is a switch structure or any orphans, remove them.
10926          * This will leave only the PF's VSI remaining.
10927          */
10928         for (i = 0; i < I40E_MAX_VEB; i++) {
10929                 if (!pf->veb[i])
10930                         continue;
10931
10932                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
10933                     pf->veb[i]->uplink_seid == 0)
10934                         i40e_switch_branch_release(pf->veb[i]);
10935         }
10936
10937         /* Now we can shutdown the PF's VSI, just before we kill
10938          * adminq and hmc.
10939          */
10940         if (pf->vsi[pf->lan_vsi])
10941                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
10942
10943         /* shutdown and destroy the HMC */
10944         if (pf->hw.hmc.hmc_obj) {
10945                 ret_code = i40e_shutdown_lan_hmc(&pf->hw);
10946                 if (ret_code)
10947                         dev_warn(&pdev->dev,
10948                                  "Failed to destroy the HMC resources: %d\n",
10949                                  ret_code);
10950         }
10951
10952         /* shutdown the adminq */
10953         ret_code = i40e_shutdown_adminq(&pf->hw);
10954         if (ret_code)
10955                 dev_warn(&pdev->dev,
10956                          "Failed to destroy the Admin Queue resources: %d\n",
10957                          ret_code);
10958
10959         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
10960         i40e_clear_interrupt_scheme(pf);
10961         for (i = 0; i < pf->num_alloc_vsi; i++) {
10962                 if (pf->vsi[i]) {
10963                         i40e_vsi_clear_rings(pf->vsi[i]);
10964                         i40e_vsi_clear(pf->vsi[i]);
10965                         pf->vsi[i] = NULL;
10966                 }
10967         }
10968
10969         for (i = 0; i < I40E_MAX_VEB; i++) {
10970                 kfree(pf->veb[i]);
10971                 pf->veb[i] = NULL;
10972         }
10973
10974         kfree(pf->qp_pile);
10975         kfree(pf->vsi);
10976
10977         iounmap(pf->hw.hw_addr);
10978         kfree(pf);
10979         pci_release_selected_regions(pdev,
10980                                      pci_select_bars(pdev, IORESOURCE_MEM));
10981
10982         pci_disable_pcie_error_reporting(pdev);
10983         pci_disable_device(pdev);
10984 }
10985
10986 /**
10987  * i40e_pci_error_detected - warning that something funky happened in PCI land
10988  * @pdev: PCI device information struct
10989  *
10990  * Called to warn that something happened and the error handling steps
10991  * are in progress.  Allows the driver to quiesce things, be ready for
10992  * remediation.
10993  **/
10994 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
10995                                                 enum pci_channel_state error)
10996 {
10997         struct i40e_pf *pf = pci_get_drvdata(pdev);
10998
10999         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
11000
11001         /* shutdown all operations */
11002         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
11003                 rtnl_lock();
11004                 i40e_prep_for_reset(pf);
11005                 rtnl_unlock();
11006         }
11007
11008         /* Request a slot reset */
11009         return PCI_ERS_RESULT_NEED_RESET;
11010 }
11011
11012 /**
11013  * i40e_pci_error_slot_reset - a PCI slot reset just happened
11014  * @pdev: PCI device information struct
11015  *
11016  * Called to find if the driver can work with the device now that
11017  * the pci slot has been reset.  If a basic connection seems good
11018  * (registers are readable and have sane content) then return a
11019  * happy little PCI_ERS_RESULT_xxx.
11020  **/
11021 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
11022 {
11023         struct i40e_pf *pf = pci_get_drvdata(pdev);
11024         pci_ers_result_t result;
11025         int err;
11026         u32 reg;
11027
11028         dev_dbg(&pdev->dev, "%s\n", __func__);
11029         if (pci_enable_device_mem(pdev)) {
11030                 dev_info(&pdev->dev,
11031                          "Cannot re-enable PCI device after reset.\n");
11032                 result = PCI_ERS_RESULT_DISCONNECT;
11033         } else {
11034                 pci_set_master(pdev);
11035                 pci_restore_state(pdev);
11036                 pci_save_state(pdev);
11037                 pci_wake_from_d3(pdev, false);
11038
11039                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
11040                 if (reg == 0)
11041                         result = PCI_ERS_RESULT_RECOVERED;
11042                 else
11043                         result = PCI_ERS_RESULT_DISCONNECT;
11044         }
11045
11046         err = pci_cleanup_aer_uncorrect_error_status(pdev);
11047         if (err) {
11048                 dev_info(&pdev->dev,
11049                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
11050                          err);
11051                 /* non-fatal, continue */
11052         }
11053
11054         return result;
11055 }
11056
11057 /**
11058  * i40e_pci_error_resume - restart operations after PCI error recovery
11059  * @pdev: PCI device information struct
11060  *
11061  * Called to allow the driver to bring things back up after PCI error
11062  * and/or reset recovery has finished.
11063  **/
11064 static void i40e_pci_error_resume(struct pci_dev *pdev)
11065 {
11066         struct i40e_pf *pf = pci_get_drvdata(pdev);
11067
11068         dev_dbg(&pdev->dev, "%s\n", __func__);
11069         if (test_bit(__I40E_SUSPENDED, &pf->state))
11070                 return;
11071
11072         rtnl_lock();
11073         i40e_handle_reset_warning(pf);
11074         rtnl_unlock();
11075 }
11076
11077 /**
11078  * i40e_shutdown - PCI callback for shutting down
11079  * @pdev: PCI device information struct
11080  **/
11081 static void i40e_shutdown(struct pci_dev *pdev)
11082 {
11083         struct i40e_pf *pf = pci_get_drvdata(pdev);
11084         struct i40e_hw *hw = &pf->hw;
11085
11086         set_bit(__I40E_SUSPENDED, &pf->state);
11087         set_bit(__I40E_DOWN, &pf->state);
11088         rtnl_lock();
11089         i40e_prep_for_reset(pf);
11090         rtnl_unlock();
11091
11092         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11093         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11094
11095         del_timer_sync(&pf->service_timer);
11096         cancel_work_sync(&pf->service_task);
11097         i40e_fdir_teardown(pf);
11098
11099         rtnl_lock();
11100         i40e_prep_for_reset(pf);
11101         rtnl_unlock();
11102
11103         wr32(hw, I40E_PFPM_APM,
11104              (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11105         wr32(hw, I40E_PFPM_WUFC,
11106              (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11107
11108         i40e_clear_interrupt_scheme(pf);
11109
11110         if (system_state == SYSTEM_POWER_OFF) {
11111                 pci_wake_from_d3(pdev, pf->wol_en);
11112                 pci_set_power_state(pdev, PCI_D3hot);
11113         }
11114 }
11115
11116 #ifdef CONFIG_PM
11117 /**
11118  * i40e_suspend - PCI callback for moving to D3
11119  * @pdev: PCI device information struct
11120  **/
11121 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
11122 {
11123         struct i40e_pf *pf = pci_get_drvdata(pdev);
11124         struct i40e_hw *hw = &pf->hw;
11125
11126         set_bit(__I40E_SUSPENDED, &pf->state);
11127         set_bit(__I40E_DOWN, &pf->state);
11128
11129         rtnl_lock();
11130         i40e_prep_for_reset(pf);
11131         rtnl_unlock();
11132
11133         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11134         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11135
11136         pci_wake_from_d3(pdev, pf->wol_en);
11137         pci_set_power_state(pdev, PCI_D3hot);
11138
11139         return 0;
11140 }
11141
11142 /**
11143  * i40e_resume - PCI callback for waking up from D3
11144  * @pdev: PCI device information struct
11145  **/
11146 static int i40e_resume(struct pci_dev *pdev)
11147 {
11148         struct i40e_pf *pf = pci_get_drvdata(pdev);
11149         u32 err;
11150
11151         pci_set_power_state(pdev, PCI_D0);
11152         pci_restore_state(pdev);
11153         /* pci_restore_state() clears dev->state_saves, so
11154          * call pci_save_state() again to restore it.
11155          */
11156         pci_save_state(pdev);
11157
11158         err = pci_enable_device_mem(pdev);
11159         if (err) {
11160                 dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n");
11161                 return err;
11162         }
11163         pci_set_master(pdev);
11164
11165         /* no wakeup events while running */
11166         pci_wake_from_d3(pdev, false);
11167
11168         /* handling the reset will rebuild the device state */
11169         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
11170                 clear_bit(__I40E_DOWN, &pf->state);
11171                 rtnl_lock();
11172                 i40e_reset_and_rebuild(pf, false);
11173                 rtnl_unlock();
11174         }
11175
11176         return 0;
11177 }
11178
11179 #endif
11180 static const struct pci_error_handlers i40e_err_handler = {
11181         .error_detected = i40e_pci_error_detected,
11182         .slot_reset = i40e_pci_error_slot_reset,
11183         .resume = i40e_pci_error_resume,
11184 };
11185
11186 static struct pci_driver i40e_driver = {
11187         .name     = i40e_driver_name,
11188         .id_table = i40e_pci_tbl,
11189         .probe    = i40e_probe,
11190         .remove   = i40e_remove,
11191 #ifdef CONFIG_PM
11192         .suspend  = i40e_suspend,
11193         .resume   = i40e_resume,
11194 #endif
11195         .shutdown = i40e_shutdown,
11196         .err_handler = &i40e_err_handler,
11197         .sriov_configure = i40e_pci_sriov_configure,
11198 };
11199
11200 /**
11201  * i40e_init_module - Driver registration routine
11202  *
11203  * i40e_init_module is the first routine called when the driver is
11204  * loaded. All it does is register with the PCI subsystem.
11205  **/
11206 static int __init i40e_init_module(void)
11207 {
11208         pr_info("%s: %s - version %s\n", i40e_driver_name,
11209                 i40e_driver_string, i40e_driver_version_str);
11210         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
11211
11212         i40e_dbg_init();
11213         return pci_register_driver(&i40e_driver);
11214 }
11215 module_init(i40e_init_module);
11216
11217 /**
11218  * i40e_exit_module - Driver exit cleanup routine
11219  *
11220  * i40e_exit_module is called just before the driver is removed
11221  * from memory.
11222  **/
11223 static void __exit i40e_exit_module(void)
11224 {
11225         pci_unregister_driver(&i40e_driver);
11226         i40e_dbg_exit();
11227 }
11228 module_exit(i40e_exit_module);