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 2
  42 #define DRV_VERSION_BUILD 10
  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_fdir_sb_setup(struct i40e_pf *pf);
  59 static int i40e_veb_get_bw_info(struct i40e_veb *veb);
  60
  61 /* i40e_pci_tbl - PCI Device ID Table
  62  *
  63  * Last entry must be all 0s
  64  *
  65  * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
  66  *   Class, Class Mask, private data (not used) }
  67  */
  68 static const struct pci_device_id i40e_pci_tbl[] = {
  69         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_XL710), 0},
  70         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QEMU), 0},
  71         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_A), 0},
  72         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_B), 0},
  73         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_C), 0},
  74         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_A), 0},
  75         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_B), 0},
  76         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_C), 0},
  77         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T), 0},
  78         /* required last entry */
  79         {0, }
  80 };
  81 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
  82
  83 #define I40E_MAX_VF_COUNT 128
  84 static int debug = -1;
  85 module_param(debug, int, 0);
  86 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
  87
  88 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
  89 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
  90 MODULE_LICENSE("GPL");
  91 MODULE_VERSION(DRV_VERSION);
  92
  93 /**
  94  * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
  95  * @hw:   pointer to the HW structure
  96  * @mem:  ptr to mem struct to fill out
  97  * @size: size of memory requested
  98  * @alignment: what to align the allocation to
  99  **/
 100 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
 101                             u64 size, u32 alignment)
 102 {
 103         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 104
 105         mem->size = ALIGN(size, alignment);
 106         mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
 107                                       &mem->pa, GFP_KERNEL);
 108         if (!mem->va)
 109                 return -ENOMEM;
 110
 111         return 0;
 112 }
 113
 114 /**
 115  * i40e_free_dma_mem_d - OS specific memory free for shared code
 116  * @hw:   pointer to the HW structure
 117  * @mem:  ptr to mem struct to free
 118  **/
 119 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
 120 {
 121         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 122
 123         dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
 124         mem->va = NULL;
 125         mem->pa = 0;
 126         mem->size = 0;
 127
 128         return 0;
 129 }
 130
 131 /**
 132  * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 133  * @hw:   pointer to the HW structure
 134  * @mem:  ptr to mem struct to fill out
 135  * @size: size of memory requested
 136  **/
 137 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
 138                              u32 size)
 139 {
 140         mem->size = size;
 141         mem->va = kzalloc(size, GFP_KERNEL);
 142
 143         if (!mem->va)
 144                 return -ENOMEM;
 145
 146         return 0;
 147 }
 148
 149 /**
 150  * i40e_free_virt_mem_d - OS specific memory free for shared code
 151  * @hw:   pointer to the HW structure
 152  * @mem:  ptr to mem struct to free
 153  **/
 154 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
 155 {
 156         /* it's ok to kfree a NULL pointer */
 157         kfree(mem->va);
 158         mem->va = NULL;
 159         mem->size = 0;
 160
 161         return 0;
 162 }
 163
 164 /**
 165  * i40e_get_lump - find a lump of free generic resource
 166  * @pf: board private structure
 167  * @pile: the pile of resource to search
 168  * @needed: the number of items needed
 169  * @id: an owner id to stick on the items assigned
 170  *
 171  * Returns the base item index of the lump, or negative for error
 172  *
 173  * The search_hint trick and lack of advanced fit-finding only work
 174  * because we're highly likely to have all the same size lump requests.
 175  * Linear search time and any fragmentation should be minimal.
 176  **/
 177 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 178                          u16 needed, u16 id)
 179 {
 180         int ret = -ENOMEM;
 181         int i, j;
 182
 183         if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
 184                 dev_info(&pf->pdev->dev,
 185                          "param err: pile=%p needed=%d id=0x%04x\n",
 186                          pile, needed, id);
 187                 return -EINVAL;
 188         }
 189
 190         /* start the linear search with an imperfect hint */
 191         i = pile->search_hint;
 192         while (i < pile->num_entries) {
 193                 /* skip already allocated entries */
 194                 if (pile->list[i] & I40E_PILE_VALID_BIT) {
 195                         i++;
 196                         continue;
 197                 }
 198
 199                 /* do we have enough in this lump? */
 200                 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
 201                         if (pile->list[i+j] & I40E_PILE_VALID_BIT)
 202                                 break;
 203                 }
 204
 205                 if (j == needed) {
 206                         /* there was enough, so assign it to the requestor */
 207                         for (j = 0; j < needed; j++)
 208                                 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 209                         ret = i;
 210                         pile->search_hint = i + j;
 211                         break;
 212                 } else {
 213                         /* not enough, so skip over it and continue looking */
 214                         i += j;
 215                 }
 216         }
 217
 218         return ret;
 219 }
 220
 221 /**
 222  * i40e_put_lump - return a lump of generic resource
 223  * @pile: the pile of resource to search
 224  * @index: the base item index
 225  * @id: the owner id of the items assigned
 226  *
 227  * Returns the count of items in the lump
 228  **/
 229 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
 230 {
 231         int valid_id = (id | I40E_PILE_VALID_BIT);
 232         int count = 0;
 233         int i;
 234
 235         if (!pile || index >= pile->num_entries)
 236                 return -EINVAL;
 237
 238         for (i = index;
 239              i < pile->num_entries && pile->list[i] == valid_id;
 240              i++) {
 241                 pile->list[i] = 0;
 242                 count++;
 243         }
 244
 245         if (count && index < pile->search_hint)
 246                 pile->search_hint = index;
 247
 248         return count;
 249 }
 250
 251 /**
 252  * i40e_service_event_schedule - Schedule the service task to wake up
 253  * @pf: board private structure
 254  *
 255  * If not already scheduled, this puts the task into the work queue
 256  **/
 257 static void i40e_service_event_schedule(struct i40e_pf *pf)
 258 {
 259         if (!test_bit(__I40E_DOWN, &pf->state) &&
 260             !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state) &&
 261             !test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
 262                 schedule_work(&pf->service_task);
 263 }
 264
 265 /**
 266  * i40e_tx_timeout - Respond to a Tx Hang
 267  * @netdev: network interface device structure
 268  *
 269  * If any port has noticed a Tx timeout, it is likely that the whole
 270  * device is munged, not just the one netdev port, so go for the full
 271  * reset.
 272  **/
 273 #ifdef I40E_FCOE
 274 void i40e_tx_timeout(struct net_device *netdev)
 275 #else
 276 static void i40e_tx_timeout(struct net_device *netdev)
 277 #endif
 278 {
 279         struct i40e_netdev_priv *np = netdev_priv(netdev);
 280         struct i40e_vsi *vsi = np->vsi;
 281         struct i40e_pf *pf = vsi->back;
 282
 283         pf->tx_timeout_count++;
 284
 285         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 286                 pf->tx_timeout_recovery_level = 1;
 287         pf->tx_timeout_last_recovery = jiffies;
 288         netdev_info(netdev, "tx_timeout recovery level %d\n",
 289                     pf->tx_timeout_recovery_level);
 290
 291         switch (pf->tx_timeout_recovery_level) {
 292         case 0:
 293                 /* disable and re-enable queues for the VSI */
 294                 if (in_interrupt()) {
 295                         set_bit(__I40E_REINIT_REQUESTED, &pf->state);
 296                         set_bit(__I40E_REINIT_REQUESTED, &vsi->state);
 297                 } else {
 298                         i40e_vsi_reinit_locked(vsi);
 299                 }
 300                 break;
 301         case 1:
 302                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
 303                 break;
 304         case 2:
 305                 set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
 306                 break;
 307         case 3:
 308                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
 309                 break;
 310         default:
 311                 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
 312                 set_bit(__I40E_DOWN_REQUESTED, &pf->state);
 313                 set_bit(__I40E_DOWN_REQUESTED, &vsi->state);
 314                 break;
 315         }
 316         i40e_service_event_schedule(pf);
 317         pf->tx_timeout_recovery_level++;
 318 }
 319
 320 /**
 321  * i40e_release_rx_desc - Store the new tail and head values
 322  * @rx_ring: ring to bump
 323  * @val: new head index
 324  **/
 325 static inline void i40e_release_rx_desc(struct i40e_ring *rx_ring, u32 val)
 326 {
 327         rx_ring->next_to_use = val;
 328
 329         /* Force memory writes to complete before letting h/w
 330          * know there are new descriptors to fetch.  (Only
 331          * applicable for weak-ordered memory model archs,
 332          * such as IA-64).
 333          */
 334         wmb();
 335         writel(val, rx_ring->tail);
 336 }
 337
 338 /**
 339  * i40e_get_vsi_stats_struct - Get System Network Statistics
 340  * @vsi: the VSI we care about
 341  *
 342  * Returns the address of the device statistics structure.
 343  * The statistics are actually updated from the service task.
 344  **/
 345 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 346 {
 347         return &vsi->net_stats;
 348 }
 349
 350 /**
 351  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 352  * @netdev: network interface device structure
 353  *
 354  * Returns the address of the device statistics structure.
 355  * The statistics are actually updated from the service task.
 356  **/
 357 #ifdef I40E_FCOE
 358 struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 359                                              struct net_device *netdev,
 360                                              struct rtnl_link_stats64 *stats)
 361 #else
 362 static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 363                                              struct net_device *netdev,
 364                                              struct rtnl_link_stats64 *stats)
 365 #endif
 366 {
 367         struct i40e_netdev_priv *np = netdev_priv(netdev);
 368         struct i40e_ring *tx_ring, *rx_ring;
 369         struct i40e_vsi *vsi = np->vsi;
 370         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 371         int i;
 372
 373         if (test_bit(__I40E_DOWN, &vsi->state))
 374                 return stats;
 375
 376         if (!vsi->tx_rings)
 377                 return stats;
 378
 379         rcu_read_lock();
 380         for (i = 0; i < vsi->num_queue_pairs; i++) {
 381                 u64 bytes, packets;
 382                 unsigned int start;
 383
 384                 tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
 385                 if (!tx_ring)
 386                         continue;
 387
 388                 do {
 389                         start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
 390                         packets = tx_ring->stats.packets;
 391                         bytes   = tx_ring->stats.bytes;
 392                 } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
 393
 394                 stats->tx_packets += packets;
 395                 stats->tx_bytes   += bytes;
 396                 rx_ring = &tx_ring[1];
 397
 398                 do {
 399                         start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
 400                         packets = rx_ring->stats.packets;
 401                         bytes   = rx_ring->stats.bytes;
 402                 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
 403
 404                 stats->rx_packets += packets;
 405                 stats->rx_bytes   += bytes;
 406         }
 407         rcu_read_unlock();
 408
 409         /* following stats updated by i40e_watchdog_subtask() */
 410         stats->multicast        = vsi_stats->multicast;
 411         stats->tx_errors        = vsi_stats->tx_errors;
 412         stats->tx_dropped       = vsi_stats->tx_dropped;
 413         stats->rx_errors        = vsi_stats->rx_errors;
 414         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 415         stats->rx_length_errors = vsi_stats->rx_length_errors;
 416
 417         return stats;
 418 }
 419
 420 /**
 421  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 422  * @vsi: the VSI to have its stats reset
 423  **/
 424 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 425 {
 426         struct rtnl_link_stats64 *ns;
 427         int i;
 428
 429         if (!vsi)
 430                 return;
 431
 432         ns = i40e_get_vsi_stats_struct(vsi);
 433         memset(ns, 0, sizeof(*ns));
 434         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 435         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 436         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 437         if (vsi->rx_rings && vsi->rx_rings[0]) {
 438                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 439                         memset(&vsi->rx_rings[i]->stats, 0 ,
 440                                sizeof(vsi->rx_rings[i]->stats));
 441                         memset(&vsi->rx_rings[i]->rx_stats, 0 ,
 442                                sizeof(vsi->rx_rings[i]->rx_stats));
 443                         memset(&vsi->tx_rings[i]->stats, 0 ,
 444                                sizeof(vsi->tx_rings[i]->stats));
 445                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 446                                sizeof(vsi->tx_rings[i]->tx_stats));
 447                 }
 448         }
 449         vsi->stat_offsets_loaded = false;
 450 }
 451
 452 /**
 453  * i40e_pf_reset_stats - Reset all of the stats for the given pf
 454  * @pf: the PF to be reset
 455  **/
 456 void i40e_pf_reset_stats(struct i40e_pf *pf)
 457 {
 458         int i;
 459
 460         memset(&pf->stats, 0, sizeof(pf->stats));
 461         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 462         pf->stat_offsets_loaded = false;
 463
 464         for (i = 0; i < I40E_MAX_VEB; i++) {
 465                 if (pf->veb[i]) {
 466                         memset(&pf->veb[i]->stats, 0,
 467                                sizeof(pf->veb[i]->stats));
 468                         memset(&pf->veb[i]->stats_offsets, 0,
 469                                sizeof(pf->veb[i]->stats_offsets));
 470                         pf->veb[i]->stat_offsets_loaded = false;
 471                 }
 472         }
 473 }
 474
 475 /**
 476  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 477  * @hw: ptr to the hardware info
 478  * @hireg: the high 32 bit reg to read
 479  * @loreg: the low 32 bit reg to read
 480  * @offset_loaded: has the initial offset been loaded yet
 481  * @offset: ptr to current offset value
 482  * @stat: ptr to the stat
 483  *
 484  * Since the device stats are not reset at PFReset, they likely will not
 485  * be zeroed when the driver starts.  We'll save the first values read
 486  * and use them as offsets to be subtracted from the raw values in order
 487  * to report stats that count from zero.  In the process, we also manage
 488  * the potential roll-over.
 489  **/
 490 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 491                                bool offset_loaded, u64 *offset, u64 *stat)
 492 {
 493         u64 new_data;
 494
 495         if (hw->device_id == I40E_DEV_ID_QEMU) {
 496                 new_data = rd32(hw, loreg);
 497                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 498         } else {
 499                 new_data = rd64(hw, loreg);
 500         }
 501         if (!offset_loaded)
 502                 *offset = new_data;
 503         if (likely(new_data >= *offset))
 504                 *stat = new_data - *offset;
 505         else
 506                 *stat = (new_data + ((u64)1 << 48)) - *offset;
 507         *stat &= 0xFFFFFFFFFFFFULL;
 508 }
 509
 510 /**
 511  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 512  * @hw: ptr to the hardware info
 513  * @reg: the hw reg to read
 514  * @offset_loaded: has the initial offset been loaded yet
 515  * @offset: ptr to current offset value
 516  * @stat: ptr to the stat
 517  **/
 518 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 519                                bool offset_loaded, u64 *offset, u64 *stat)
 520 {
 521         u32 new_data;
 522
 523         new_data = rd32(hw, reg);
 524         if (!offset_loaded)
 525                 *offset = new_data;
 526         if (likely(new_data >= *offset))
 527                 *stat = (u32)(new_data - *offset);
 528         else
 529                 *stat = (u32)((new_data + ((u64)1 << 32)) - *offset);
 530 }
 531
 532 /**
 533  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 534  * @vsi: the VSI to be updated
 535  **/
 536 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 537 {
 538         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 539         struct i40e_pf *pf = vsi->back;
 540         struct i40e_hw *hw = &pf->hw;
 541         struct i40e_eth_stats *oes;
 542         struct i40e_eth_stats *es;     /* device's eth stats */
 543
 544         es = &vsi->eth_stats;
 545         oes = &vsi->eth_stats_offsets;
 546
 547         /* Gather up the stats that the hw collects */
 548         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 549                            vsi->stat_offsets_loaded,
 550                            &oes->tx_errors, &es->tx_errors);
 551         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 552                            vsi->stat_offsets_loaded,
 553                            &oes->rx_discards, &es->rx_discards);
 554         i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
 555                            vsi->stat_offsets_loaded,
 556                            &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
 557         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 558                            vsi->stat_offsets_loaded,
 559                            &oes->tx_errors, &es->tx_errors);
 560
 561         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 562                            I40E_GLV_GORCL(stat_idx),
 563                            vsi->stat_offsets_loaded,
 564                            &oes->rx_bytes, &es->rx_bytes);
 565         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 566                            I40E_GLV_UPRCL(stat_idx),
 567                            vsi->stat_offsets_loaded,
 568                            &oes->rx_unicast, &es->rx_unicast);
 569         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 570                            I40E_GLV_MPRCL(stat_idx),
 571                            vsi->stat_offsets_loaded,
 572                            &oes->rx_multicast, &es->rx_multicast);
 573         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 574                            I40E_GLV_BPRCL(stat_idx),
 575                            vsi->stat_offsets_loaded,
 576                            &oes->rx_broadcast, &es->rx_broadcast);
 577
 578         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 579                            I40E_GLV_GOTCL(stat_idx),
 580                            vsi->stat_offsets_loaded,
 581                            &oes->tx_bytes, &es->tx_bytes);
 582         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 583                            I40E_GLV_UPTCL(stat_idx),
 584                            vsi->stat_offsets_loaded,
 585                            &oes->tx_unicast, &es->tx_unicast);
 586         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 587                            I40E_GLV_MPTCL(stat_idx),
 588                            vsi->stat_offsets_loaded,
 589                            &oes->tx_multicast, &es->tx_multicast);
 590         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 591                            I40E_GLV_BPTCL(stat_idx),
 592                            vsi->stat_offsets_loaded,
 593                            &oes->tx_broadcast, &es->tx_broadcast);
 594         vsi->stat_offsets_loaded = true;
 595 }
 596
 597 /**
 598  * i40e_update_veb_stats - Update Switch component statistics
 599  * @veb: the VEB being updated
 600  **/
 601 static void i40e_update_veb_stats(struct i40e_veb *veb)
 602 {
 603         struct i40e_pf *pf = veb->pf;
 604         struct i40e_hw *hw = &pf->hw;
 605         struct i40e_eth_stats *oes;
 606         struct i40e_eth_stats *es;     /* device's eth stats */
 607         int idx = 0;
 608
 609         idx = veb->stats_idx;
 610         es = &veb->stats;
 611         oes = &veb->stats_offsets;
 612
 613         /* Gather up the stats that the hw collects */
 614         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 615                            veb->stat_offsets_loaded,
 616                            &oes->tx_discards, &es->tx_discards);
 617         if (hw->revision_id > 0)
 618                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 619                                    veb->stat_offsets_loaded,
 620                                    &oes->rx_unknown_protocol,
 621                                    &es->rx_unknown_protocol);
 622         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 623                            veb->stat_offsets_loaded,
 624                            &oes->rx_bytes, &es->rx_bytes);
 625         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 626                            veb->stat_offsets_loaded,
 627                            &oes->rx_unicast, &es->rx_unicast);
 628         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 629                            veb->stat_offsets_loaded,
 630                            &oes->rx_multicast, &es->rx_multicast);
 631         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 632                            veb->stat_offsets_loaded,
 633                            &oes->rx_broadcast, &es->rx_broadcast);
 634
 635         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 636                            veb->stat_offsets_loaded,
 637                            &oes->tx_bytes, &es->tx_bytes);
 638         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 639                            veb->stat_offsets_loaded,
 640                            &oes->tx_unicast, &es->tx_unicast);
 641         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 642                            veb->stat_offsets_loaded,
 643                            &oes->tx_multicast, &es->tx_multicast);
 644         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 645                            veb->stat_offsets_loaded,
 646                            &oes->tx_broadcast, &es->tx_broadcast);
 647         veb->stat_offsets_loaded = true;
 648 }
 649
 650 #ifdef I40E_FCOE
 651 /**
 652  * i40e_update_fcoe_stats - Update FCoE-specific ethernet statistics counters.
 653  * @vsi: the VSI that is capable of doing FCoE
 654  **/
 655 static void i40e_update_fcoe_stats(struct i40e_vsi *vsi)
 656 {
 657         struct i40e_pf *pf = vsi->back;
 658         struct i40e_hw *hw = &pf->hw;
 659         struct i40e_fcoe_stats *ofs;
 660         struct i40e_fcoe_stats *fs;     /* device's eth stats */
 661         int idx;
 662
 663         if (vsi->type != I40E_VSI_FCOE)
 664                 return;
 665
 666         idx = (pf->pf_seid - I40E_BASE_PF_SEID) + I40E_FCOE_PF_STAT_OFFSET;
 667         fs = &vsi->fcoe_stats;
 668         ofs = &vsi->fcoe_stats_offsets;
 669
 670         i40e_stat_update32(hw, I40E_GL_FCOEPRC(idx),
 671                            vsi->fcoe_stat_offsets_loaded,
 672                            &ofs->rx_fcoe_packets, &fs->rx_fcoe_packets);
 673         i40e_stat_update48(hw, I40E_GL_FCOEDWRCH(idx), I40E_GL_FCOEDWRCL(idx),
 674                            vsi->fcoe_stat_offsets_loaded,
 675                            &ofs->rx_fcoe_dwords, &fs->rx_fcoe_dwords);
 676         i40e_stat_update32(hw, I40E_GL_FCOERPDC(idx),
 677                            vsi->fcoe_stat_offsets_loaded,
 678                            &ofs->rx_fcoe_dropped, &fs->rx_fcoe_dropped);
 679         i40e_stat_update32(hw, I40E_GL_FCOEPTC(idx),
 680                            vsi->fcoe_stat_offsets_loaded,
 681                            &ofs->tx_fcoe_packets, &fs->tx_fcoe_packets);
 682         i40e_stat_update48(hw, I40E_GL_FCOEDWTCH(idx), I40E_GL_FCOEDWTCL(idx),
 683                            vsi->fcoe_stat_offsets_loaded,
 684                            &ofs->tx_fcoe_dwords, &fs->tx_fcoe_dwords);
 685         i40e_stat_update32(hw, I40E_GL_FCOECRC(idx),
 686                            vsi->fcoe_stat_offsets_loaded,
 687                            &ofs->fcoe_bad_fccrc, &fs->fcoe_bad_fccrc);
 688         i40e_stat_update32(hw, I40E_GL_FCOELAST(idx),
 689                            vsi->fcoe_stat_offsets_loaded,
 690                            &ofs->fcoe_last_error, &fs->fcoe_last_error);
 691         i40e_stat_update32(hw, I40E_GL_FCOEDDPC(idx),
 692                            vsi->fcoe_stat_offsets_loaded,
 693                            &ofs->fcoe_ddp_count, &fs->fcoe_ddp_count);
 694
 695         vsi->fcoe_stat_offsets_loaded = true;
 696 }
 697
 698 #endif
 699 /**
 700  * i40e_update_link_xoff_rx - Update XOFF received in link flow control mode
 701  * @pf: the corresponding PF
 702  *
 703  * Update the Rx XOFF counter (PAUSE frames) in link flow control mode
 704  **/
 705 static void i40e_update_link_xoff_rx(struct i40e_pf *pf)
 706 {
 707         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 708         struct i40e_hw_port_stats *nsd = &pf->stats;
 709         struct i40e_hw *hw = &pf->hw;
 710         u64 xoff = 0;
 711         u16 i, v;
 712
 713         if ((hw->fc.current_mode != I40E_FC_FULL) &&
 714             (hw->fc.current_mode != I40E_FC_RX_PAUSE))
 715                 return;
 716
 717         xoff = nsd->link_xoff_rx;
 718         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
 719                            pf->stat_offsets_loaded,
 720                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
 721
 722         /* No new LFC xoff rx */
 723         if (!(nsd->link_xoff_rx - xoff))
 724                 return;
 725
 726         /* Clear the __I40E_HANG_CHECK_ARMED bit for all Tx rings */
 727         for (v = 0; v < pf->num_alloc_vsi; v++) {
 728                 struct i40e_vsi *vsi = pf->vsi[v];
 729
 730                 if (!vsi || !vsi->tx_rings[0])
 731                         continue;
 732
 733                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 734                         struct i40e_ring *ring = vsi->tx_rings[i];
 735                         clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
 736                 }
 737         }
 738 }
 739
 740 /**
 741  * i40e_update_prio_xoff_rx - Update XOFF received in PFC mode
 742  * @pf: the corresponding PF
 743  *
 744  * Update the Rx XOFF counter (PAUSE frames) in PFC mode
 745  **/
 746 static void i40e_update_prio_xoff_rx(struct i40e_pf *pf)
 747 {
 748         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 749         struct i40e_hw_port_stats *nsd = &pf->stats;
 750         bool xoff[I40E_MAX_TRAFFIC_CLASS] = {false};
 751         struct i40e_dcbx_config *dcb_cfg;
 752         struct i40e_hw *hw = &pf->hw;
 753         u16 i, v;
 754         u8 tc;
 755
 756         dcb_cfg = &hw->local_dcbx_config;
 757
 758         /* See if DCB enabled with PFC TC */
 759         if (!(pf->flags & I40E_FLAG_DCB_ENABLED) ||
 760             !(dcb_cfg->pfc.pfcenable)) {
 761                 i40e_update_link_xoff_rx(pf);
 762                 return;
 763         }
 764
 765         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
 766                 u64 prio_xoff = nsd->priority_xoff_rx[i];
 767                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 768                                    pf->stat_offsets_loaded,
 769                                    &osd->priority_xoff_rx[i],
 770                                    &nsd->priority_xoff_rx[i]);
 771
 772                 /* No new PFC xoff rx */
 773                 if (!(nsd->priority_xoff_rx[i] - prio_xoff))
 774                         continue;
 775                 /* Get the TC for given priority */
 776                 tc = dcb_cfg->etscfg.prioritytable[i];
 777                 xoff[tc] = true;
 778         }
 779
 780         /* Clear the __I40E_HANG_CHECK_ARMED bit for Tx rings */
 781         for (v = 0; v < pf->num_alloc_vsi; v++) {
 782                 struct i40e_vsi *vsi = pf->vsi[v];
 783
 784                 if (!vsi || !vsi->tx_rings[0])
 785                         continue;
 786
 787                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 788                         struct i40e_ring *ring = vsi->tx_rings[i];
 789
 790                         tc = ring->dcb_tc;
 791                         if (xoff[tc])
 792                                 clear_bit(__I40E_HANG_CHECK_ARMED,
 793                                           &ring->state);
 794                 }
 795         }
 796 }
 797
 798 /**
 799  * i40e_update_vsi_stats - Update the vsi statistics counters.
 800  * @vsi: the VSI to be updated
 801  *
 802  * There are a few instances where we store the same stat in a
 803  * couple of different structs.  This is partly because we have
 804  * the netdev stats that need to be filled out, which is slightly
 805  * different from the "eth_stats" defined by the chip and used in
 806  * VF communications.  We sort it out here.
 807  **/
 808 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 809 {
 810         struct i40e_pf *pf = vsi->back;
 811         struct rtnl_link_stats64 *ons;
 812         struct rtnl_link_stats64 *ns;   /* netdev stats */
 813         struct i40e_eth_stats *oes;
 814         struct i40e_eth_stats *es;     /* device's eth stats */
 815         u32 tx_restart, tx_busy;
 816         struct i40e_ring *p;
 817         u32 rx_page, rx_buf;
 818         u64 bytes, packets;
 819         unsigned int start;
 820         u64 rx_p, rx_b;
 821         u64 tx_p, tx_b;
 822         u16 q;
 823
 824         if (test_bit(__I40E_DOWN, &vsi->state) ||
 825             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 826                 return;
 827
 828         ns = i40e_get_vsi_stats_struct(vsi);
 829         ons = &vsi->net_stats_offsets;
 830         es = &vsi->eth_stats;
 831         oes = &vsi->eth_stats_offsets;
 832
 833         /* Gather up the netdev and vsi stats that the driver collects
 834          * on the fly during packet processing
 835          */
 836         rx_b = rx_p = 0;
 837         tx_b = tx_p = 0;
 838         tx_restart = tx_busy = 0;
 839         rx_page = 0;
 840         rx_buf = 0;
 841         rcu_read_lock();
 842         for (q = 0; q < vsi->num_queue_pairs; q++) {
 843                 /* locate Tx ring */
 844                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 845
 846                 do {
 847                         start = u64_stats_fetch_begin_irq(&p->syncp);
 848                         packets = p->stats.packets;
 849                         bytes = p->stats.bytes;
 850                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 851                 tx_b += bytes;
 852                 tx_p += packets;
 853                 tx_restart += p->tx_stats.restart_queue;
 854                 tx_busy += p->tx_stats.tx_busy;
 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->rx_page_failed = rx_page;
 872         vsi->rx_buf_failed = rx_buf;
 873
 874         ns->rx_packets = rx_p;
 875         ns->rx_bytes = rx_b;
 876         ns->tx_packets = tx_p;
 877         ns->tx_bytes = tx_b;
 878
 879         /* update netdev stats from eth stats */
 880         i40e_update_eth_stats(vsi);
 881         ons->tx_errors = oes->tx_errors;
 882         ns->tx_errors = es->tx_errors;
 883         ons->multicast = oes->rx_multicast;
 884         ns->multicast = es->rx_multicast;
 885         ons->rx_dropped = oes->rx_discards;
 886         ns->rx_dropped = es->rx_discards;
 887         ons->tx_dropped = oes->tx_discards;
 888         ns->tx_dropped = es->tx_discards;
 889
 890         /* pull in a couple PF stats if this is the main vsi */
 891         if (vsi == pf->vsi[pf->lan_vsi]) {
 892                 ns->rx_crc_errors = pf->stats.crc_errors;
 893                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 894                 ns->rx_length_errors = pf->stats.rx_length_errors;
 895         }
 896 }
 897
 898 /**
 899  * i40e_update_pf_stats - Update the pf statistics counters.
 900  * @pf: the PF to be updated
 901  **/
 902 static void i40e_update_pf_stats(struct i40e_pf *pf)
 903 {
 904         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 905         struct i40e_hw_port_stats *nsd = &pf->stats;
 906         struct i40e_hw *hw = &pf->hw;
 907         u32 val;
 908         int i;
 909
 910         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 911                            I40E_GLPRT_GORCL(hw->port),
 912                            pf->stat_offsets_loaded,
 913                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 914         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 915                            I40E_GLPRT_GOTCL(hw->port),
 916                            pf->stat_offsets_loaded,
 917                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 918         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 919                            pf->stat_offsets_loaded,
 920                            &osd->eth.rx_discards,
 921                            &nsd->eth.rx_discards);
 922         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 923                            I40E_GLPRT_UPRCL(hw->port),
 924                            pf->stat_offsets_loaded,
 925                            &osd->eth.rx_unicast,
 926                            &nsd->eth.rx_unicast);
 927         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 928                            I40E_GLPRT_MPRCL(hw->port),
 929                            pf->stat_offsets_loaded,
 930                            &osd->eth.rx_multicast,
 931                            &nsd->eth.rx_multicast);
 932         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
 933                            I40E_GLPRT_BPRCL(hw->port),
 934                            pf->stat_offsets_loaded,
 935                            &osd->eth.rx_broadcast,
 936                            &nsd->eth.rx_broadcast);
 937         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
 938                            I40E_GLPRT_UPTCL(hw->port),
 939                            pf->stat_offsets_loaded,
 940                            &osd->eth.tx_unicast,
 941                            &nsd->eth.tx_unicast);
 942         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
 943                            I40E_GLPRT_MPTCL(hw->port),
 944                            pf->stat_offsets_loaded,
 945                            &osd->eth.tx_multicast,
 946                            &nsd->eth.tx_multicast);
 947         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
 948                            I40E_GLPRT_BPTCL(hw->port),
 949                            pf->stat_offsets_loaded,
 950                            &osd->eth.tx_broadcast,
 951                            &nsd->eth.tx_broadcast);
 952
 953         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
 954                            pf->stat_offsets_loaded,
 955                            &osd->tx_dropped_link_down,
 956                            &nsd->tx_dropped_link_down);
 957
 958         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
 959                            pf->stat_offsets_loaded,
 960                            &osd->crc_errors, &nsd->crc_errors);
 961
 962         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
 963                            pf->stat_offsets_loaded,
 964                            &osd->illegal_bytes, &nsd->illegal_bytes);
 965
 966         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
 967                            pf->stat_offsets_loaded,
 968                            &osd->mac_local_faults,
 969                            &nsd->mac_local_faults);
 970         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
 971                            pf->stat_offsets_loaded,
 972                            &osd->mac_remote_faults,
 973                            &nsd->mac_remote_faults);
 974
 975         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
 976                            pf->stat_offsets_loaded,
 977                            &osd->rx_length_errors,
 978                            &nsd->rx_length_errors);
 979
 980         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
 981                            pf->stat_offsets_loaded,
 982                            &osd->link_xon_rx, &nsd->link_xon_rx);
 983         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
 984                            pf->stat_offsets_loaded,
 985                            &osd->link_xon_tx, &nsd->link_xon_tx);
 986         i40e_update_prio_xoff_rx(pf);  /* handles I40E_GLPRT_LXOFFRXC */
 987         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
 988                            pf->stat_offsets_loaded,
 989                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
 990
 991         for (i = 0; i < 8; i++) {
 992                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
 993                                    pf->stat_offsets_loaded,
 994                                    &osd->priority_xon_rx[i],
 995                                    &nsd->priority_xon_rx[i]);
 996                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
 997                                    pf->stat_offsets_loaded,
 998                                    &osd->priority_xon_tx[i],
 999                                    &nsd->priority_xon_tx[i]);
1000                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
1001                                    pf->stat_offsets_loaded,
1002                                    &osd->priority_xoff_tx[i],
1003                                    &nsd->priority_xoff_tx[i]);
1004                 i40e_stat_update32(hw,
1005                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
1006                                    pf->stat_offsets_loaded,
1007                                    &osd->priority_xon_2_xoff[i],
1008                                    &nsd->priority_xon_2_xoff[i]);
1009         }
1010
1011         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
1012                            I40E_GLPRT_PRC64L(hw->port),
1013                            pf->stat_offsets_loaded,
1014                            &osd->rx_size_64, &nsd->rx_size_64);
1015         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
1016                            I40E_GLPRT_PRC127L(hw->port),
1017                            pf->stat_offsets_loaded,
1018                            &osd->rx_size_127, &nsd->rx_size_127);
1019         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
1020                            I40E_GLPRT_PRC255L(hw->port),
1021                            pf->stat_offsets_loaded,
1022                            &osd->rx_size_255, &nsd->rx_size_255);
1023         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
1024                            I40E_GLPRT_PRC511L(hw->port),
1025                            pf->stat_offsets_loaded,
1026                            &osd->rx_size_511, &nsd->rx_size_511);
1027         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
1028                            I40E_GLPRT_PRC1023L(hw->port),
1029                            pf->stat_offsets_loaded,
1030                            &osd->rx_size_1023, &nsd->rx_size_1023);
1031         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
1032                            I40E_GLPRT_PRC1522L(hw->port),
1033                            pf->stat_offsets_loaded,
1034                            &osd->rx_size_1522, &nsd->rx_size_1522);
1035         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
1036                            I40E_GLPRT_PRC9522L(hw->port),
1037                            pf->stat_offsets_loaded,
1038                            &osd->rx_size_big, &nsd->rx_size_big);
1039
1040         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
1041                            I40E_GLPRT_PTC64L(hw->port),
1042                            pf->stat_offsets_loaded,
1043                            &osd->tx_size_64, &nsd->tx_size_64);
1044         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
1045                            I40E_GLPRT_PTC127L(hw->port),
1046                            pf->stat_offsets_loaded,
1047                            &osd->tx_size_127, &nsd->tx_size_127);
1048         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
1049                            I40E_GLPRT_PTC255L(hw->port),
1050                            pf->stat_offsets_loaded,
1051                            &osd->tx_size_255, &nsd->tx_size_255);
1052         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
1053                            I40E_GLPRT_PTC511L(hw->port),
1054                            pf->stat_offsets_loaded,
1055                            &osd->tx_size_511, &nsd->tx_size_511);
1056         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1057                            I40E_GLPRT_PTC1023L(hw->port),
1058                            pf->stat_offsets_loaded,
1059                            &osd->tx_size_1023, &nsd->tx_size_1023);
1060         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1061                            I40E_GLPRT_PTC1522L(hw->port),
1062                            pf->stat_offsets_loaded,
1063                            &osd->tx_size_1522, &nsd->tx_size_1522);
1064         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1065                            I40E_GLPRT_PTC9522L(hw->port),
1066                            pf->stat_offsets_loaded,
1067                            &osd->tx_size_big, &nsd->tx_size_big);
1068
1069         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1070                            pf->stat_offsets_loaded,
1071                            &osd->rx_undersize, &nsd->rx_undersize);
1072         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1073                            pf->stat_offsets_loaded,
1074                            &osd->rx_fragments, &nsd->rx_fragments);
1075         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1076                            pf->stat_offsets_loaded,
1077                            &osd->rx_oversize, &nsd->rx_oversize);
1078         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1079                            pf->stat_offsets_loaded,
1080                            &osd->rx_jabber, &nsd->rx_jabber);
1081
1082         /* FDIR stats */
1083         i40e_stat_update32(hw, I40E_GLQF_PCNT(pf->fd_atr_cnt_idx),
1084                            pf->stat_offsets_loaded,
1085                            &osd->fd_atr_match, &nsd->fd_atr_match);
1086         i40e_stat_update32(hw, I40E_GLQF_PCNT(pf->fd_sb_cnt_idx),
1087                            pf->stat_offsets_loaded,
1088                            &osd->fd_sb_match, &nsd->fd_sb_match);
1089
1090         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1091         nsd->tx_lpi_status =
1092                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1093                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1094         nsd->rx_lpi_status =
1095                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1096                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1097         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1098                            pf->stat_offsets_loaded,
1099                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1100         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1101                            pf->stat_offsets_loaded,
1102                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1103
1104         pf->stat_offsets_loaded = true;
1105 }
1106
1107 /**
1108  * i40e_update_stats - Update the various statistics counters.
1109  * @vsi: the VSI to be updated
1110  *
1111  * Update the various stats for this VSI and its related entities.
1112  **/
1113 void i40e_update_stats(struct i40e_vsi *vsi)
1114 {
1115         struct i40e_pf *pf = vsi->back;
1116
1117         if (vsi == pf->vsi[pf->lan_vsi])
1118                 i40e_update_pf_stats(pf);
1119
1120         i40e_update_vsi_stats(vsi);
1121 #ifdef I40E_FCOE
1122         i40e_update_fcoe_stats(vsi);
1123 #endif
1124 }
1125
1126 /**
1127  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1128  * @vsi: the VSI to be searched
1129  * @macaddr: the MAC address
1130  * @vlan: the vlan
1131  * @is_vf: make sure its a vf filter, else doesn't matter
1132  * @is_netdev: make sure its a netdev filter, else doesn't matter
1133  *
1134  * Returns ptr to the filter object or NULL
1135  **/
1136 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1137                                                 u8 *macaddr, s16 vlan,
1138                                                 bool is_vf, bool is_netdev)
1139 {
1140         struct i40e_mac_filter *f;
1141
1142         if (!vsi || !macaddr)
1143                 return NULL;
1144
1145         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1146                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1147                     (vlan == f->vlan)    &&
1148                     (!is_vf || f->is_vf) &&
1149                     (!is_netdev || f->is_netdev))
1150                         return f;
1151         }
1152         return NULL;
1153 }
1154
1155 /**
1156  * i40e_find_mac - Find a mac addr in the macvlan filters list
1157  * @vsi: the VSI to be searched
1158  * @macaddr: the MAC address we are searching for
1159  * @is_vf: make sure its a vf filter, else doesn't matter
1160  * @is_netdev: make sure its a netdev filter, else doesn't matter
1161  *
1162  * Returns the first filter with the provided MAC address or NULL if
1163  * MAC address was not found
1164  **/
1165 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1166                                       bool is_vf, bool is_netdev)
1167 {
1168         struct i40e_mac_filter *f;
1169
1170         if (!vsi || !macaddr)
1171                 return NULL;
1172
1173         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1174                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1175                     (!is_vf || f->is_vf) &&
1176                     (!is_netdev || f->is_netdev))
1177                         return f;
1178         }
1179         return NULL;
1180 }
1181
1182 /**
1183  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1184  * @vsi: the VSI to be searched
1185  *
1186  * Returns true if VSI is in vlan mode or false otherwise
1187  **/
1188 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1189 {
1190         struct i40e_mac_filter *f;
1191
1192         /* Only -1 for all the filters denotes not in vlan mode
1193          * so we have to go through all the list in order to make sure
1194          */
1195         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1196                 if (f->vlan >= 0)
1197                         return true;
1198         }
1199
1200         return false;
1201 }
1202
1203 /**
1204  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1205  * @vsi: the VSI to be searched
1206  * @macaddr: the mac address to be filtered
1207  * @is_vf: true if it is a vf
1208  * @is_netdev: true if it is a netdev
1209  *
1210  * Goes through all the macvlan filters and adds a
1211  * macvlan filter for each unique vlan that already exists
1212  *
1213  * Returns first filter found on success, else NULL
1214  **/
1215 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1216                                              bool is_vf, bool is_netdev)
1217 {
1218         struct i40e_mac_filter *f;
1219
1220         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1221                 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1222                                       is_vf, is_netdev)) {
1223                         if (!i40e_add_filter(vsi, macaddr, f->vlan,
1224                                              is_vf, is_netdev))
1225                                 return NULL;
1226                 }
1227         }
1228
1229         return list_first_entry_or_null(&vsi->mac_filter_list,
1230                                         struct i40e_mac_filter, list);
1231 }
1232
1233 /**
1234  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1235  * @vsi: the PF Main VSI - inappropriate for any other VSI
1236  * @macaddr: the MAC address
1237  *
1238  * Some older firmware configurations set up a default promiscuous VLAN
1239  * filter that needs to be removed.
1240  **/
1241 static int i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1242 {
1243         struct i40e_aqc_remove_macvlan_element_data element;
1244         struct i40e_pf *pf = vsi->back;
1245         i40e_status aq_ret;
1246
1247         /* Only appropriate for the PF main VSI */
1248         if (vsi->type != I40E_VSI_MAIN)
1249                 return -EINVAL;
1250
1251         memset(&element, 0, sizeof(element));
1252         ether_addr_copy(element.mac_addr, macaddr);
1253         element.vlan_tag = 0;
1254         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1255                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1256         aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1257         if (aq_ret)
1258                 return -ENOENT;
1259
1260         return 0;
1261 }
1262
1263 /**
1264  * i40e_add_filter - Add a mac/vlan filter to the VSI
1265  * @vsi: the VSI to be searched
1266  * @macaddr: the MAC address
1267  * @vlan: the vlan
1268  * @is_vf: make sure its a vf filter, else doesn't matter
1269  * @is_netdev: make sure its a netdev filter, else doesn't matter
1270  *
1271  * Returns ptr to the filter object or NULL when no memory available.
1272  **/
1273 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1274                                         u8 *macaddr, s16 vlan,
1275                                         bool is_vf, bool is_netdev)
1276 {
1277         struct i40e_mac_filter *f;
1278
1279         if (!vsi || !macaddr)
1280                 return NULL;
1281
1282         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1283         if (!f) {
1284                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1285                 if (!f)
1286                         goto add_filter_out;
1287
1288                 ether_addr_copy(f->macaddr, macaddr);
1289                 f->vlan = vlan;
1290                 f->changed = true;
1291
1292                 INIT_LIST_HEAD(&f->list);
1293                 list_add(&f->list, &vsi->mac_filter_list);
1294         }
1295
1296         /* increment counter and add a new flag if needed */
1297         if (is_vf) {
1298                 if (!f->is_vf) {
1299                         f->is_vf = true;
1300                         f->counter++;
1301                 }
1302         } else if (is_netdev) {
1303                 if (!f->is_netdev) {
1304                         f->is_netdev = true;
1305                         f->counter++;
1306                 }
1307         } else {
1308                 f->counter++;
1309         }
1310
1311         /* changed tells sync_filters_subtask to
1312          * push the filter down to the firmware
1313          */
1314         if (f->changed) {
1315                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1316                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1317         }
1318
1319 add_filter_out:
1320         return f;
1321 }
1322
1323 /**
1324  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1325  * @vsi: the VSI to be searched
1326  * @macaddr: the MAC address
1327  * @vlan: the vlan
1328  * @is_vf: make sure it's a vf filter, else doesn't matter
1329  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1330  **/
1331 void i40e_del_filter(struct i40e_vsi *vsi,
1332                      u8 *macaddr, s16 vlan,
1333                      bool is_vf, bool is_netdev)
1334 {
1335         struct i40e_mac_filter *f;
1336
1337         if (!vsi || !macaddr)
1338                 return;
1339
1340         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1341         if (!f || f->counter == 0)
1342                 return;
1343
1344         if (is_vf) {
1345                 if (f->is_vf) {
1346                         f->is_vf = false;
1347                         f->counter--;
1348                 }
1349         } else if (is_netdev) {
1350                 if (f->is_netdev) {
1351                         f->is_netdev = false;
1352                         f->counter--;
1353                 }
1354         } else {
1355                 /* make sure we don't remove a filter in use by vf or netdev */
1356                 int min_f = 0;
1357                 min_f += (f->is_vf ? 1 : 0);
1358                 min_f += (f->is_netdev ? 1 : 0);
1359
1360                 if (f->counter > min_f)
1361                         f->counter--;
1362         }
1363
1364         /* counter == 0 tells sync_filters_subtask to
1365          * remove the filter from the firmware's list
1366          */
1367         if (f->counter == 0) {
1368                 f->changed = true;
1369                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1370                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1371         }
1372 }
1373
1374 /**
1375  * i40e_set_mac - NDO callback to set mac address
1376  * @netdev: network interface device structure
1377  * @p: pointer to an address structure
1378  *
1379  * Returns 0 on success, negative on failure
1380  **/
1381 #ifdef I40E_FCOE
1382 int i40e_set_mac(struct net_device *netdev, void *p)
1383 #else
1384 static int i40e_set_mac(struct net_device *netdev, void *p)
1385 #endif
1386 {
1387         struct i40e_netdev_priv *np = netdev_priv(netdev);
1388         struct i40e_vsi *vsi = np->vsi;
1389         struct i40e_pf *pf = vsi->back;
1390         struct i40e_hw *hw = &pf->hw;
1391         struct sockaddr *addr = p;
1392         struct i40e_mac_filter *f;
1393
1394         if (!is_valid_ether_addr(addr->sa_data))
1395                 return -EADDRNOTAVAIL;
1396
1397         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1398                 netdev_info(netdev, "already using mac address %pM\n",
1399                             addr->sa_data);
1400                 return 0;
1401         }
1402
1403         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1404             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1405                 return -EADDRNOTAVAIL;
1406
1407         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1408                 netdev_info(netdev, "returning to hw mac address %pM\n",
1409                             hw->mac.addr);
1410         else
1411                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1412
1413         if (vsi->type == I40E_VSI_MAIN) {
1414                 i40e_status ret;
1415                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1416                                                 I40E_AQC_WRITE_TYPE_LAA_WOL,
1417                                                 addr->sa_data, NULL);
1418                 if (ret) {
1419                         netdev_info(netdev,
1420                                     "Addr change for Main VSI failed: %d\n",
1421                                     ret);
1422                         return -EADDRNOTAVAIL;
1423                 }
1424         }
1425
1426         if (ether_addr_equal(netdev->dev_addr, hw->mac.addr)) {
1427                 struct i40e_aqc_remove_macvlan_element_data element;
1428
1429                 memset(&element, 0, sizeof(element));
1430                 ether_addr_copy(element.mac_addr, netdev->dev_addr);
1431                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1432                 i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1433         } else {
1434                 i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
1435                                 false, false);
1436         }
1437
1438         if (ether_addr_equal(addr->sa_data, hw->mac.addr)) {
1439                 struct i40e_aqc_add_macvlan_element_data element;
1440
1441                 memset(&element, 0, sizeof(element));
1442                 ether_addr_copy(element.mac_addr, hw->mac.addr);
1443                 element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
1444                 i40e_aq_add_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1445         } else {
1446                 f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY,
1447                                     false, false);
1448                 if (f)
1449                         f->is_laa = true;
1450         }
1451
1452         i40e_sync_vsi_filters(vsi);
1453         ether_addr_copy(netdev->dev_addr, addr->sa_data);
1454
1455         return 0;
1456 }
1457
1458 /**
1459  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1460  * @vsi: the VSI being setup
1461  * @ctxt: VSI context structure
1462  * @enabled_tc: Enabled TCs bitmap
1463  * @is_add: True if called before Add VSI
1464  *
1465  * Setup VSI queue mapping for enabled traffic classes.
1466  **/
1467 #ifdef I40E_FCOE
1468 void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1469                               struct i40e_vsi_context *ctxt,
1470                               u8 enabled_tc,
1471                               bool is_add)
1472 #else
1473 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1474                                      struct i40e_vsi_context *ctxt,
1475                                      u8 enabled_tc,
1476                                      bool is_add)
1477 #endif
1478 {
1479         struct i40e_pf *pf = vsi->back;
1480         u16 sections = 0;
1481         u8 netdev_tc = 0;
1482         u16 numtc = 0;
1483         u16 qcount;
1484         u8 offset;
1485         u16 qmap;
1486         int i;
1487         u16 num_tc_qps = 0;
1488
1489         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1490         offset = 0;
1491
1492         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1493                 /* Find numtc from enabled TC bitmap */
1494                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1495                         if (enabled_tc & (1 << i)) /* TC is enabled */
1496                                 numtc++;
1497                 }
1498                 if (!numtc) {
1499                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1500                         numtc = 1;
1501                 }
1502         } else {
1503                 /* At least TC0 is enabled in case of non-DCB case */
1504                 numtc = 1;
1505         }
1506
1507         vsi->tc_config.numtc = numtc;
1508         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1509         /* Number of queues per enabled TC */
1510         num_tc_qps = vsi->alloc_queue_pairs/numtc;
1511         num_tc_qps = min_t(int, num_tc_qps, I40E_MAX_QUEUES_PER_TC);
1512
1513         /* Setup queue offset/count for all TCs for given VSI */
1514         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1515                 /* See if the given TC is enabled for the given VSI */
1516                 if (vsi->tc_config.enabled_tc & (1 << i)) { /* TC is enabled */
1517                         int pow, num_qps;
1518
1519                         switch (vsi->type) {
1520                         case I40E_VSI_MAIN:
1521                                 qcount = min_t(int, pf->rss_size, num_tc_qps);
1522                                 break;
1523 #ifdef I40E_FCOE
1524                         case I40E_VSI_FCOE:
1525                                 qcount = num_tc_qps;
1526                                 break;
1527 #endif
1528                         case I40E_VSI_FDIR:
1529                         case I40E_VSI_SRIOV:
1530                         case I40E_VSI_VMDQ2:
1531                         default:
1532                                 qcount = num_tc_qps;
1533                                 WARN_ON(i != 0);
1534                                 break;
1535                         }
1536                         vsi->tc_config.tc_info[i].qoffset = offset;
1537                         vsi->tc_config.tc_info[i].qcount = qcount;
1538
1539                         /* find the power-of-2 of the number of queue pairs */
1540                         num_qps = qcount;
1541                         pow = 0;
1542                         while (num_qps && ((1 << pow) < qcount)) {
1543                                 pow++;
1544                                 num_qps >>= 1;
1545                         }
1546
1547                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1548                         qmap =
1549                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1550                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1551
1552                         offset += qcount;
1553                 } else {
1554                         /* TC is not enabled so set the offset to
1555                          * default queue and allocate one queue
1556                          * for the given TC.
1557                          */
1558                         vsi->tc_config.tc_info[i].qoffset = 0;
1559                         vsi->tc_config.tc_info[i].qcount = 1;
1560                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1561
1562                         qmap = 0;
1563                 }
1564                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1565         }
1566
1567         /* Set actual Tx/Rx queue pairs */
1568         vsi->num_queue_pairs = offset;
1569         if ((vsi->type == I40E_VSI_MAIN) && (numtc == 1)) {
1570                 if (vsi->req_queue_pairs > 0)
1571                         vsi->num_queue_pairs = vsi->req_queue_pairs;
1572                 else
1573                         vsi->num_queue_pairs = pf->num_lan_msix;
1574         }
1575
1576         /* Scheduler section valid can only be set for ADD VSI */
1577         if (is_add) {
1578                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1579
1580                 ctxt->info.up_enable_bits = enabled_tc;
1581         }
1582         if (vsi->type == I40E_VSI_SRIOV) {
1583                 ctxt->info.mapping_flags |=
1584                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1585                 for (i = 0; i < vsi->num_queue_pairs; i++)
1586                         ctxt->info.queue_mapping[i] =
1587                                                cpu_to_le16(vsi->base_queue + i);
1588         } else {
1589                 ctxt->info.mapping_flags |=
1590                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1591                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1592         }
1593         ctxt->info.valid_sections |= cpu_to_le16(sections);
1594 }
1595
1596 /**
1597  * i40e_set_rx_mode - NDO callback to set the netdev filters
1598  * @netdev: network interface device structure
1599  **/
1600 #ifdef I40E_FCOE
1601 void i40e_set_rx_mode(struct net_device *netdev)
1602 #else
1603 static void i40e_set_rx_mode(struct net_device *netdev)
1604 #endif
1605 {
1606         struct i40e_netdev_priv *np = netdev_priv(netdev);
1607         struct i40e_mac_filter *f, *ftmp;
1608         struct i40e_vsi *vsi = np->vsi;
1609         struct netdev_hw_addr *uca;
1610         struct netdev_hw_addr *mca;
1611         struct netdev_hw_addr *ha;
1612
1613         /* add addr if not already in the filter list */
1614         netdev_for_each_uc_addr(uca, netdev) {
1615                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1616                         if (i40e_is_vsi_in_vlan(vsi))
1617                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1618                                                      false, true);
1619                         else
1620                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1621                                                 false, true);
1622                 }
1623         }
1624
1625         netdev_for_each_mc_addr(mca, netdev) {
1626                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1627                         if (i40e_is_vsi_in_vlan(vsi))
1628                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1629                                                      false, true);
1630                         else
1631                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1632                                                 false, true);
1633                 }
1634         }
1635
1636         /* remove filter if not in netdev list */
1637         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1638                 bool found = false;
1639
1640                 if (!f->is_netdev)
1641                         continue;
1642
1643                 if (is_multicast_ether_addr(f->macaddr)) {
1644                         netdev_for_each_mc_addr(mca, netdev) {
1645                                 if (ether_addr_equal(mca->addr, f->macaddr)) {
1646                                         found = true;
1647                                         break;
1648                                 }
1649                         }
1650                 } else {
1651                         netdev_for_each_uc_addr(uca, netdev) {
1652                                 if (ether_addr_equal(uca->addr, f->macaddr)) {
1653                                         found = true;
1654                                         break;
1655                                 }
1656                         }
1657
1658                         for_each_dev_addr(netdev, ha) {
1659                                 if (ether_addr_equal(ha->addr, f->macaddr)) {
1660                                         found = true;
1661                                         break;
1662                                 }
1663                         }
1664                 }
1665                 if (!found)
1666                         i40e_del_filter(
1667                            vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1668         }
1669
1670         /* check for other flag changes */
1671         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1672                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1673                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1674         }
1675 }
1676
1677 /**
1678  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1679  * @vsi: ptr to the VSI
1680  *
1681  * Push any outstanding VSI filter changes through the AdminQ.
1682  *
1683  * Returns 0 or error value
1684  **/
1685 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
1686 {
1687         struct i40e_mac_filter *f, *ftmp;
1688         bool promisc_forced_on = false;
1689         bool add_happened = false;
1690         int filter_list_len = 0;
1691         u32 changed_flags = 0;
1692         i40e_status aq_ret = 0;
1693         struct i40e_pf *pf;
1694         int num_add = 0;
1695         int num_del = 0;
1696         u16 cmd_flags;
1697
1698         /* empty array typed pointers, kcalloc later */
1699         struct i40e_aqc_add_macvlan_element_data *add_list;
1700         struct i40e_aqc_remove_macvlan_element_data *del_list;
1701
1702         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1703                 usleep_range(1000, 2000);
1704         pf = vsi->back;
1705
1706         if (vsi->netdev) {
1707                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1708                 vsi->current_netdev_flags = vsi->netdev->flags;
1709         }
1710
1711         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1712                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1713
1714                 filter_list_len = pf->hw.aq.asq_buf_size /
1715                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1716                 del_list = kcalloc(filter_list_len,
1717                             sizeof(struct i40e_aqc_remove_macvlan_element_data),
1718                             GFP_KERNEL);
1719                 if (!del_list)
1720                         return -ENOMEM;
1721
1722                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1723                         if (!f->changed)
1724                                 continue;
1725
1726                         if (f->counter != 0)
1727                                 continue;
1728                         f->changed = false;
1729                         cmd_flags = 0;
1730
1731                         /* add to delete list */
1732                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
1733                         del_list[num_del].vlan_tag =
1734                                 cpu_to_le16((u16)(f->vlan ==
1735                                             I40E_VLAN_ANY ? 0 : f->vlan));
1736
1737                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1738                         del_list[num_del].flags = cmd_flags;
1739                         num_del++;
1740
1741                         /* unlink from filter list */
1742                         list_del(&f->list);
1743                         kfree(f);
1744
1745                         /* flush a full buffer */
1746                         if (num_del == filter_list_len) {
1747                                 aq_ret = i40e_aq_remove_macvlan(&pf->hw,
1748                                             vsi->seid, del_list, num_del,
1749                                             NULL);
1750                                 num_del = 0;
1751                                 memset(del_list, 0, sizeof(*del_list));
1752
1753                                 if (aq_ret &&
1754                                     pf->hw.aq.asq_last_status !=
1755                                                               I40E_AQ_RC_ENOENT)
1756                                         dev_info(&pf->pdev->dev,
1757                                                  "ignoring delete macvlan error, err %d, aq_err %d while flushing a full buffer\n",
1758                                                  aq_ret,
1759                                                  pf->hw.aq.asq_last_status);
1760                         }
1761                 }
1762                 if (num_del) {
1763                         aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
1764                                                      del_list, num_del, NULL);
1765                         num_del = 0;
1766
1767                         if (aq_ret &&
1768                             pf->hw.aq.asq_last_status != I40E_AQ_RC_ENOENT)
1769                                 dev_info(&pf->pdev->dev,
1770                                          "ignoring delete macvlan error, err %d, aq_err %d\n",
1771                                          aq_ret, pf->hw.aq.asq_last_status);
1772                 }
1773
1774                 kfree(del_list);
1775                 del_list = NULL;
1776
1777                 /* do all the adds now */
1778                 filter_list_len = pf->hw.aq.asq_buf_size /
1779                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1780                 add_list = kcalloc(filter_list_len,
1781                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1782                                GFP_KERNEL);
1783                 if (!add_list)
1784                         return -ENOMEM;
1785
1786                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1787                         if (!f->changed)
1788                                 continue;
1789
1790                         if (f->counter == 0)
1791                                 continue;
1792                         f->changed = false;
1793                         add_happened = true;
1794                         cmd_flags = 0;
1795
1796                         /* add to add array */
1797                         ether_addr_copy(add_list[num_add].mac_addr, f->macaddr);
1798                         add_list[num_add].vlan_tag =
1799                                 cpu_to_le16(
1800                                  (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
1801                         add_list[num_add].queue_number = 0;
1802
1803                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
1804                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
1805                         num_add++;
1806
1807                         /* flush a full buffer */
1808                         if (num_add == filter_list_len) {
1809                                 aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1810                                                              add_list, num_add,
1811                                                              NULL);
1812                                 num_add = 0;
1813
1814                                 if (aq_ret)
1815                                         break;
1816                                 memset(add_list, 0, sizeof(*add_list));
1817                         }
1818                 }
1819                 if (num_add) {
1820                         aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1821                                                      add_list, num_add, NULL);
1822                         num_add = 0;
1823                 }
1824                 kfree(add_list);
1825                 add_list = NULL;
1826
1827                 if (add_happened && aq_ret &&
1828                     pf->hw.aq.asq_last_status != I40E_AQ_RC_EINVAL) {
1829                         dev_info(&pf->pdev->dev,
1830                                  "add filter failed, err %d, aq_err %d\n",
1831                                  aq_ret, pf->hw.aq.asq_last_status);
1832                         if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
1833                             !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1834                                       &vsi->state)) {
1835                                 promisc_forced_on = true;
1836                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1837                                         &vsi->state);
1838                                 dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
1839                         }
1840                 }
1841         }
1842
1843         /* check for changes in promiscuous modes */
1844         if (changed_flags & IFF_ALLMULTI) {
1845                 bool cur_multipromisc;
1846                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
1847                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
1848                                                                vsi->seid,
1849                                                                cur_multipromisc,
1850                                                                NULL);
1851                 if (aq_ret)
1852                         dev_info(&pf->pdev->dev,
1853                                  "set multi promisc failed, err %d, aq_err %d\n",
1854                                  aq_ret, pf->hw.aq.asq_last_status);
1855         }
1856         if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
1857                 bool cur_promisc;
1858                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
1859                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1860                                         &vsi->state));
1861                 aq_ret = i40e_aq_set_vsi_unicast_promiscuous(&vsi->back->hw,
1862                                                              vsi->seid,
1863                                                              cur_promisc, NULL);
1864                 if (aq_ret)
1865                         dev_info(&pf->pdev->dev,
1866                                  "set uni promisc failed, err %d, aq_err %d\n",
1867                                  aq_ret, pf->hw.aq.asq_last_status);
1868                 aq_ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
1869                                                    vsi->seid,
1870                                                    cur_promisc, NULL);
1871                 if (aq_ret)
1872                         dev_info(&pf->pdev->dev,
1873                                  "set brdcast promisc failed, err %d, aq_err %d\n",
1874                                  aq_ret, pf->hw.aq.asq_last_status);
1875         }
1876
1877         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
1878         return 0;
1879 }
1880
1881 /**
1882  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
1883  * @pf: board private structure
1884  **/
1885 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
1886 {
1887         int v;
1888
1889         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
1890                 return;
1891         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
1892
1893         for (v = 0; v < pf->num_alloc_vsi; v++) {
1894                 if (pf->vsi[v] &&
1895                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED))
1896                         i40e_sync_vsi_filters(pf->vsi[v]);
1897         }
1898 }
1899
1900 /**
1901  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
1902  * @netdev: network interface device structure
1903  * @new_mtu: new value for maximum frame size
1904  *
1905  * Returns 0 on success, negative on failure
1906  **/
1907 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
1908 {
1909         struct i40e_netdev_priv *np = netdev_priv(netdev);
1910         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
1911         struct i40e_vsi *vsi = np->vsi;
1912
1913         /* MTU < 68 is an error and causes problems on some kernels */
1914         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
1915                 return -EINVAL;
1916
1917         netdev_info(netdev, "changing MTU from %d to %d\n",
1918                     netdev->mtu, new_mtu);
1919         netdev->mtu = new_mtu;
1920         if (netif_running(netdev))
1921                 i40e_vsi_reinit_locked(vsi);
1922
1923         return 0;
1924 }
1925
1926 /**
1927  * i40e_ioctl - Access the hwtstamp interface
1928  * @netdev: network interface device structure
1929  * @ifr: interface request data
1930  * @cmd: ioctl command
1931  **/
1932 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
1933 {
1934         struct i40e_netdev_priv *np = netdev_priv(netdev);
1935         struct i40e_pf *pf = np->vsi->back;
1936
1937         switch (cmd) {
1938         case SIOCGHWTSTAMP:
1939                 return i40e_ptp_get_ts_config(pf, ifr);
1940         case SIOCSHWTSTAMP:
1941                 return i40e_ptp_set_ts_config(pf, ifr);
1942         default:
1943                 return -EOPNOTSUPP;
1944         }
1945 }
1946
1947 /**
1948  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
1949  * @vsi: the vsi being adjusted
1950  **/
1951 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
1952 {
1953         struct i40e_vsi_context ctxt;
1954         i40e_status ret;
1955
1956         if ((vsi->info.valid_sections &
1957              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
1958             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
1959                 return;  /* already enabled */
1960
1961         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
1962         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
1963                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
1964
1965         ctxt.seid = vsi->seid;
1966         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
1967         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
1968         if (ret) {
1969                 dev_info(&vsi->back->pdev->dev,
1970                          "%s: update vsi failed, aq_err=%d\n",
1971                          __func__, vsi->back->hw.aq.asq_last_status);
1972         }
1973 }
1974
1975 /**
1976  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
1977  * @vsi: the vsi being adjusted
1978  **/
1979 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
1980 {
1981         struct i40e_vsi_context ctxt;
1982         i40e_status ret;
1983
1984         if ((vsi->info.valid_sections &
1985              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
1986             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
1987              I40E_AQ_VSI_PVLAN_EMOD_MASK))
1988                 return;  /* already disabled */
1989
1990         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
1991         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
1992                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
1993
1994         ctxt.seid = vsi->seid;
1995         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
1996         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
1997         if (ret) {
1998                 dev_info(&vsi->back->pdev->dev,
1999                          "%s: update vsi failed, aq_err=%d\n",
2000                          __func__, vsi->back->hw.aq.asq_last_status);
2001         }
2002 }
2003
2004 /**
2005  * i40e_vlan_rx_register - Setup or shutdown vlan offload
2006  * @netdev: network interface to be adjusted
2007  * @features: netdev features to test if VLAN offload is enabled or not
2008  **/
2009 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
2010 {
2011         struct i40e_netdev_priv *np = netdev_priv(netdev);
2012         struct i40e_vsi *vsi = np->vsi;
2013
2014         if (features & NETIF_F_HW_VLAN_CTAG_RX)
2015                 i40e_vlan_stripping_enable(vsi);
2016         else
2017                 i40e_vlan_stripping_disable(vsi);
2018 }
2019
2020 /**
2021  * i40e_vsi_add_vlan - Add vsi membership for given vlan
2022  * @vsi: the vsi being configured
2023  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2024  **/
2025 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
2026 {
2027         struct i40e_mac_filter *f, *add_f;
2028         bool is_netdev, is_vf;
2029
2030         is_vf = (vsi->type == I40E_VSI_SRIOV);
2031         is_netdev = !!(vsi->netdev);
2032
2033         if (is_netdev) {
2034                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
2035                                         is_vf, is_netdev);
2036                 if (!add_f) {
2037                         dev_info(&vsi->back->pdev->dev,
2038                                  "Could not add vlan filter %d for %pM\n",
2039                                  vid, vsi->netdev->dev_addr);
2040                         return -ENOMEM;
2041                 }
2042         }
2043
2044         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2045                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2046                 if (!add_f) {
2047                         dev_info(&vsi->back->pdev->dev,
2048                                  "Could not add vlan filter %d for %pM\n",
2049                                  vid, f->macaddr);
2050                         return -ENOMEM;
2051                 }
2052         }
2053
2054         /* Now if we add a vlan tag, make sure to check if it is the first
2055          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
2056          * with 0, so we now accept untagged and specified tagged traffic
2057          * (and not any taged and untagged)
2058          */
2059         if (vid > 0) {
2060                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
2061                                                   I40E_VLAN_ANY,
2062                                                   is_vf, is_netdev)) {
2063                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
2064                                         I40E_VLAN_ANY, is_vf, is_netdev);
2065                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
2066                                                 is_vf, is_netdev);
2067                         if (!add_f) {
2068                                 dev_info(&vsi->back->pdev->dev,
2069                                          "Could not add filter 0 for %pM\n",
2070                                          vsi->netdev->dev_addr);
2071                                 return -ENOMEM;
2072                         }
2073                 }
2074         }
2075
2076         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
2077         if (vid > 0 && !vsi->info.pvid) {
2078                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2079                         if (i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2080                                              is_vf, is_netdev)) {
2081                                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2082                                                 is_vf, is_netdev);
2083                                 add_f = i40e_add_filter(vsi, f->macaddr,
2084                                                         0, is_vf, is_netdev);
2085                                 if (!add_f) {
2086                                         dev_info(&vsi->back->pdev->dev,
2087                                                  "Could not add filter 0 for %pM\n",
2088                                                  f->macaddr);
2089                                         return -ENOMEM;
2090                                 }
2091                         }
2092                 }
2093         }
2094
2095         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2096             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2097                 return 0;
2098
2099         return i40e_sync_vsi_filters(vsi);
2100 }
2101
2102 /**
2103  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
2104  * @vsi: the vsi being configured
2105  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2106  *
2107  * Return: 0 on success or negative otherwise
2108  **/
2109 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
2110 {
2111         struct net_device *netdev = vsi->netdev;
2112         struct i40e_mac_filter *f, *add_f;
2113         bool is_vf, is_netdev;
2114         int filter_count = 0;
2115
2116         is_vf = (vsi->type == I40E_VSI_SRIOV);
2117         is_netdev = !!(netdev);
2118
2119         if (is_netdev)
2120                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
2121
2122         list_for_each_entry(f, &vsi->mac_filter_list, list)
2123                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2124
2125         /* go through all the filters for this VSI and if there is only
2126          * vid == 0 it means there are no other filters, so vid 0 must
2127          * be replaced with -1. This signifies that we should from now
2128          * on accept any traffic (with any tag present, or untagged)
2129          */
2130         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2131                 if (is_netdev) {
2132                         if (f->vlan &&
2133                             ether_addr_equal(netdev->dev_addr, f->macaddr))
2134                                 filter_count++;
2135                 }
2136
2137                 if (f->vlan)
2138                         filter_count++;
2139         }
2140
2141         if (!filter_count && is_netdev) {
2142                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
2143                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
2144                                     is_vf, is_netdev);
2145                 if (!f) {
2146                         dev_info(&vsi->back->pdev->dev,
2147                                  "Could not add filter %d for %pM\n",
2148                                  I40E_VLAN_ANY, netdev->dev_addr);
2149                         return -ENOMEM;
2150                 }
2151         }
2152
2153         if (!filter_count) {
2154                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2155                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
2156                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2157                                             is_vf, is_netdev);
2158                         if (!add_f) {
2159                                 dev_info(&vsi->back->pdev->dev,
2160                                          "Could not add filter %d for %pM\n",
2161                                          I40E_VLAN_ANY, f->macaddr);
2162                                 return -ENOMEM;
2163                         }
2164                 }
2165         }
2166
2167         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2168             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2169                 return 0;
2170
2171         return i40e_sync_vsi_filters(vsi);
2172 }
2173
2174 /**
2175  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2176  * @netdev: network interface to be adjusted
2177  * @vid: vlan id to be added
2178  *
2179  * net_device_ops implementation for adding vlan ids
2180  **/
2181 #ifdef I40E_FCOE
2182 int i40e_vlan_rx_add_vid(struct net_device *netdev,
2183                          __always_unused __be16 proto, u16 vid)
2184 #else
2185 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2186                                 __always_unused __be16 proto, u16 vid)
2187 #endif
2188 {
2189         struct i40e_netdev_priv *np = netdev_priv(netdev);
2190         struct i40e_vsi *vsi = np->vsi;
2191         int ret = 0;
2192
2193         if (vid > 4095)
2194                 return -EINVAL;
2195
2196         netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
2197
2198         /* If the network stack called us with vid = 0 then
2199          * it is asking to receive priority tagged packets with
2200          * vlan id 0.  Our HW receives them by default when configured
2201          * to receive untagged packets so there is no need to add an
2202          * extra filter for vlan 0 tagged packets.
2203          */
2204         if (vid)
2205                 ret = i40e_vsi_add_vlan(vsi, vid);
2206
2207         if (!ret && (vid < VLAN_N_VID))
2208                 set_bit(vid, vsi->active_vlans);
2209
2210         return ret;
2211 }
2212
2213 /**
2214  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2215  * @netdev: network interface to be adjusted
2216  * @vid: vlan id to be removed
2217  *
2218  * net_device_ops implementation for removing vlan ids
2219  **/
2220 #ifdef I40E_FCOE
2221 int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2222                           __always_unused __be16 proto, u16 vid)
2223 #else
2224 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2225                                  __always_unused __be16 proto, u16 vid)
2226 #endif
2227 {
2228         struct i40e_netdev_priv *np = netdev_priv(netdev);
2229         struct i40e_vsi *vsi = np->vsi;
2230
2231         netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
2232
2233         /* return code is ignored as there is nothing a user
2234          * can do about failure to remove and a log message was
2235          * already printed from the other function
2236          */
2237         i40e_vsi_kill_vlan(vsi, vid);
2238
2239         clear_bit(vid, vsi->active_vlans);
2240
2241         return 0;
2242 }
2243
2244 /**
2245  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2246  * @vsi: the vsi being brought back up
2247  **/
2248 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2249 {
2250         u16 vid;
2251
2252         if (!vsi->netdev)
2253                 return;
2254
2255         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2256
2257         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2258                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2259                                      vid);
2260 }
2261
2262 /**
2263  * i40e_vsi_add_pvid - Add pvid for the VSI
2264  * @vsi: the vsi being adjusted
2265  * @vid: the vlan id to set as a PVID
2266  **/
2267 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2268 {
2269         struct i40e_vsi_context ctxt;
2270         i40e_status aq_ret;
2271
2272         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2273         vsi->info.pvid = cpu_to_le16(vid);
2274         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2275                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2276                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2277
2278         ctxt.seid = vsi->seid;
2279         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
2280         aq_ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2281         if (aq_ret) {
2282                 dev_info(&vsi->back->pdev->dev,
2283                          "%s: update vsi failed, aq_err=%d\n",
2284                          __func__, vsi->back->hw.aq.asq_last_status);
2285                 return -ENOENT;
2286         }
2287
2288         return 0;
2289 }
2290
2291 /**
2292  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2293  * @vsi: the vsi being adjusted
2294  *
2295  * Just use the vlan_rx_register() service to put it back to normal
2296  **/
2297 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2298 {
2299         i40e_vlan_stripping_disable(vsi);
2300
2301         vsi->info.pvid = 0;
2302 }
2303
2304 /**
2305  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2306  * @vsi: ptr to the VSI
2307  *
2308  * If this function returns with an error, then it's possible one or
2309  * more of the rings is populated (while the rest are not).  It is the
2310  * callers duty to clean those orphaned rings.
2311  *
2312  * Return 0 on success, negative on failure
2313  **/
2314 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2315 {
2316         int i, err = 0;
2317
2318         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2319                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2320
2321         return err;
2322 }
2323
2324 /**
2325  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2326  * @vsi: ptr to the VSI
2327  *
2328  * Free VSI's transmit software resources
2329  **/
2330 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2331 {
2332         int i;
2333
2334         if (!vsi->tx_rings)
2335                 return;
2336
2337         for (i = 0; i < vsi->num_queue_pairs; i++)
2338                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2339                         i40e_free_tx_resources(vsi->tx_rings[i]);
2340 }
2341
2342 /**
2343  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2344  * @vsi: ptr to the VSI
2345  *
2346  * If this function returns with an error, then it's possible one or
2347  * more of the rings is populated (while the rest are not).  It is the
2348  * callers duty to clean those orphaned rings.
2349  *
2350  * Return 0 on success, negative on failure
2351  **/
2352 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2353 {
2354         int i, err = 0;
2355
2356         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2357                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2358 #ifdef I40E_FCOE
2359         i40e_fcoe_setup_ddp_resources(vsi);
2360 #endif
2361         return err;
2362 }
2363
2364 /**
2365  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2366  * @vsi: ptr to the VSI
2367  *
2368  * Free all receive software resources
2369  **/
2370 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2371 {
2372         int i;
2373
2374         if (!vsi->rx_rings)
2375                 return;
2376
2377         for (i = 0; i < vsi->num_queue_pairs; i++)
2378                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2379                         i40e_free_rx_resources(vsi->rx_rings[i]);
2380 #ifdef I40E_FCOE
2381         i40e_fcoe_free_ddp_resources(vsi);
2382 #endif
2383 }
2384
2385 /**
2386  * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
2387  * @ring: The Tx ring to configure
2388  *
2389  * This enables/disables XPS for a given Tx descriptor ring
2390  * based on the TCs enabled for the VSI that ring belongs to.
2391  **/
2392 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
2393 {
2394         struct i40e_vsi *vsi = ring->vsi;
2395         cpumask_var_t mask;
2396
2397         if (ring->q_vector && ring->netdev) {
2398                 /* Single TC mode enable XPS */
2399                 if (vsi->tc_config.numtc <= 1 &&
2400                     !test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state)) {
2401                         netif_set_xps_queue(ring->netdev,
2402                                             &ring->q_vector->affinity_mask,
2403                                             ring->queue_index);
2404                 } else if (alloc_cpumask_var(&mask, GFP_KERNEL)) {
2405                         /* Disable XPS to allow selection based on TC */
2406                         bitmap_zero(cpumask_bits(mask), nr_cpumask_bits);
2407                         netif_set_xps_queue(ring->netdev, mask,
2408                                             ring->queue_index);
2409                         free_cpumask_var(mask);
2410                 }
2411         }
2412 }
2413
2414 /**
2415  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2416  * @ring: The Tx ring to configure
2417  *
2418  * Configure the Tx descriptor ring in the HMC context.
2419  **/
2420 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2421 {
2422         struct i40e_vsi *vsi = ring->vsi;
2423         u16 pf_q = vsi->base_queue + ring->queue_index;
2424         struct i40e_hw *hw = &vsi->back->hw;
2425         struct i40e_hmc_obj_txq tx_ctx;
2426         i40e_status err = 0;
2427         u32 qtx_ctl = 0;
2428
2429         /* some ATR related tx ring init */
2430         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2431                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2432                 ring->atr_count = 0;
2433         } else {
2434                 ring->atr_sample_rate = 0;
2435         }
2436
2437         /* configure XPS */
2438         i40e_config_xps_tx_ring(ring);
2439
2440         /* clear the context structure first */
2441         memset(&tx_ctx, 0, sizeof(tx_ctx));
2442
2443         tx_ctx.new_context = 1;
2444         tx_ctx.base = (ring->dma / 128);
2445         tx_ctx.qlen = ring->count;
2446         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2447                                                I40E_FLAG_FD_ATR_ENABLED));
2448 #ifdef I40E_FCOE
2449         tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2450 #endif
2451         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2452         /* FDIR VSI tx ring can still use RS bit and writebacks */
2453         if (vsi->type != I40E_VSI_FDIR)
2454                 tx_ctx.head_wb_ena = 1;
2455         tx_ctx.head_wb_addr = ring->dma +
2456                               (ring->count * sizeof(struct i40e_tx_desc));
2457
2458         /* As part of VSI creation/update, FW allocates certain
2459          * Tx arbitration queue sets for each TC enabled for
2460          * the VSI. The FW returns the handles to these queue
2461          * sets as part of the response buffer to Add VSI,
2462          * Update VSI, etc. AQ commands. It is expected that
2463          * these queue set handles be associated with the Tx
2464          * queues by the driver as part of the TX queue context
2465          * initialization. This has to be done regardless of
2466          * DCB as by default everything is mapped to TC0.
2467          */
2468         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2469         tx_ctx.rdylist_act = 0;
2470
2471         /* clear the context in the HMC */
2472         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2473         if (err) {
2474                 dev_info(&vsi->back->pdev->dev,
2475                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2476                          ring->queue_index, pf_q, err);
2477                 return -ENOMEM;
2478         }
2479
2480         /* set the context in the HMC */
2481         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2482         if (err) {
2483                 dev_info(&vsi->back->pdev->dev,
2484                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2485                          ring->queue_index, pf_q, err);
2486                 return -ENOMEM;
2487         }
2488
2489         /* Now associate this queue with this PCI function */
2490         if (vsi->type == I40E_VSI_VMDQ2) {
2491                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2492                 qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
2493                            I40E_QTX_CTL_VFVM_INDX_MASK;
2494         } else {
2495                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2496         }
2497
2498         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2499                     I40E_QTX_CTL_PF_INDX_MASK);
2500         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2501         i40e_flush(hw);
2502
2503         clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
2504
2505         /* cache tail off for easier writes later */
2506         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2507
2508         return 0;
2509 }
2510
2511 /**
2512  * i40e_configure_rx_ring - Configure a receive ring context
2513  * @ring: The Rx ring to configure
2514  *
2515  * Configure the Rx descriptor ring in the HMC context.
2516  **/
2517 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2518 {
2519         struct i40e_vsi *vsi = ring->vsi;
2520         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2521         u16 pf_q = vsi->base_queue + ring->queue_index;
2522         struct i40e_hw *hw = &vsi->back->hw;
2523         struct i40e_hmc_obj_rxq rx_ctx;
2524         i40e_status err = 0;
2525
2526         ring->state = 0;
2527
2528         /* clear the context structure first */
2529         memset(&rx_ctx, 0, sizeof(rx_ctx));
2530
2531         ring->rx_buf_len = vsi->rx_buf_len;
2532         ring->rx_hdr_len = vsi->rx_hdr_len;
2533
2534         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2535         rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
2536
2537         rx_ctx.base = (ring->dma / 128);
2538         rx_ctx.qlen = ring->count;
2539
2540         if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
2541                 set_ring_16byte_desc_enabled(ring);
2542                 rx_ctx.dsize = 0;
2543         } else {
2544                 rx_ctx.dsize = 1;
2545         }
2546
2547         rx_ctx.dtype = vsi->dtype;
2548         if (vsi->dtype) {
2549                 set_ring_ps_enabled(ring);
2550                 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
2551                                   I40E_RX_SPLIT_IP      |
2552                                   I40E_RX_SPLIT_TCP_UDP |
2553                                   I40E_RX_SPLIT_SCTP;
2554         } else {
2555                 rx_ctx.hsplit_0 = 0;
2556         }
2557
2558         rx_ctx.rxmax = min_t(u16, vsi->max_frame,
2559                                   (chain_len * ring->rx_buf_len));
2560         if (hw->revision_id == 0)
2561                 rx_ctx.lrxqthresh = 0;
2562         else
2563                 rx_ctx.lrxqthresh = 2;
2564         rx_ctx.crcstrip = 1;
2565         rx_ctx.l2tsel = 1;
2566         rx_ctx.showiv = 1;
2567 #ifdef I40E_FCOE
2568         rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2569 #endif
2570         /* set the prefena field to 1 because the manual says to */
2571         rx_ctx.prefena = 1;
2572
2573         /* clear the context in the HMC */
2574         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2575         if (err) {
2576                 dev_info(&vsi->back->pdev->dev,
2577                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2578                          ring->queue_index, pf_q, err);
2579                 return -ENOMEM;
2580         }
2581
2582         /* set the context in the HMC */
2583         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2584         if (err) {
2585                 dev_info(&vsi->back->pdev->dev,
2586                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2587                          ring->queue_index, pf_q, err);
2588                 return -ENOMEM;
2589         }
2590
2591         /* cache tail for quicker writes, and clear the reg before use */
2592         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2593         writel(0, ring->tail);
2594
2595         if (ring_is_ps_enabled(ring)) {
2596                 i40e_alloc_rx_headers(ring);
2597                 i40e_alloc_rx_buffers_ps(ring, I40E_DESC_UNUSED(ring));
2598         } else {
2599                 i40e_alloc_rx_buffers_1buf(ring, I40E_DESC_UNUSED(ring));
2600         }
2601
2602         return 0;
2603 }
2604
2605 /**
2606  * i40e_vsi_configure_tx - Configure the VSI for Tx
2607  * @vsi: VSI structure describing this set of rings and resources
2608  *
2609  * Configure the Tx VSI for operation.
2610  **/
2611 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2612 {
2613         int err = 0;
2614         u16 i;
2615
2616         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2617                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2618
2619         return err;
2620 }
2621
2622 /**
2623  * i40e_vsi_configure_rx - Configure the VSI for Rx
2624  * @vsi: the VSI being configured
2625  *
2626  * Configure the Rx VSI for operation.
2627  **/
2628 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2629 {
2630         int err = 0;
2631         u16 i;
2632
2633         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2634                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2635                                + ETH_FCS_LEN + VLAN_HLEN;
2636         else
2637                 vsi->max_frame = I40E_RXBUFFER_2048;
2638
2639         /* figure out correct receive buffer length */
2640         switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2641                                     I40E_FLAG_RX_PS_ENABLED)) {
2642         case I40E_FLAG_RX_1BUF_ENABLED:
2643                 vsi->rx_hdr_len = 0;
2644                 vsi->rx_buf_len = vsi->max_frame;
2645                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2646                 break;
2647         case I40E_FLAG_RX_PS_ENABLED:
2648                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2649                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2650                 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2651                 break;
2652         default:
2653                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2654                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2655                 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2656                 break;
2657         }
2658
2659 #ifdef I40E_FCOE
2660         /* setup rx buffer for FCoE */
2661         if ((vsi->type == I40E_VSI_FCOE) &&
2662             (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
2663                 vsi->rx_hdr_len = 0;
2664                 vsi->rx_buf_len = I40E_RXBUFFER_3072;
2665                 vsi->max_frame = I40E_RXBUFFER_3072;
2666                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2667         }
2668
2669 #endif /* I40E_FCOE */
2670         /* round up for the chip's needs */
2671         vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
2672                                 (1 << I40E_RXQ_CTX_HBUFF_SHIFT));
2673         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2674                                 (1 << I40E_RXQ_CTX_DBUFF_SHIFT));
2675
2676         /* set up individual rings */
2677         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2678                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
2679
2680         return err;
2681 }
2682
2683 /**
2684  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
2685  * @vsi: ptr to the VSI
2686  **/
2687 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
2688 {
2689         struct i40e_ring *tx_ring, *rx_ring;
2690         u16 qoffset, qcount;
2691         int i, n;
2692
2693         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED))
2694                 return;
2695
2696         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
2697                 if (!(vsi->tc_config.enabled_tc & (1 << n)))
2698                         continue;
2699
2700                 qoffset = vsi->tc_config.tc_info[n].qoffset;
2701                 qcount = vsi->tc_config.tc_info[n].qcount;
2702                 for (i = qoffset; i < (qoffset + qcount); i++) {
2703                         rx_ring = vsi->rx_rings[i];
2704                         tx_ring = vsi->tx_rings[i];
2705                         rx_ring->dcb_tc = n;
2706                         tx_ring->dcb_tc = n;
2707                 }
2708         }
2709 }
2710
2711 /**
2712  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
2713  * @vsi: ptr to the VSI
2714  **/
2715 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
2716 {
2717         if (vsi->netdev)
2718                 i40e_set_rx_mode(vsi->netdev);
2719 }
2720
2721 /**
2722  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
2723  * @vsi: Pointer to the targeted VSI
2724  *
2725  * This function replays the hlist on the hw where all the SB Flow Director
2726  * filters were saved.
2727  **/
2728 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
2729 {
2730         struct i40e_fdir_filter *filter;
2731         struct i40e_pf *pf = vsi->back;
2732         struct hlist_node *node;
2733
2734         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
2735                 return;
2736
2737         hlist_for_each_entry_safe(filter, node,
2738                                   &pf->fdir_filter_list, fdir_node) {
2739                 i40e_add_del_fdir(vsi, filter, true);
2740         }
2741 }
2742
2743 /**
2744  * i40e_vsi_configure - Set up the VSI for action
2745  * @vsi: the VSI being configured
2746  **/
2747 static int i40e_vsi_configure(struct i40e_vsi *vsi)
2748 {
2749         int err;
2750
2751         i40e_set_vsi_rx_mode(vsi);
2752         i40e_restore_vlan(vsi);
2753         i40e_vsi_config_dcb_rings(vsi);
2754         err = i40e_vsi_configure_tx(vsi);
2755         if (!err)
2756                 err = i40e_vsi_configure_rx(vsi);
2757
2758         return err;
2759 }
2760
2761 /**
2762  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
2763  * @vsi: the VSI being configured
2764  **/
2765 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
2766 {
2767         struct i40e_pf *pf = vsi->back;
2768         struct i40e_q_vector *q_vector;
2769         struct i40e_hw *hw = &pf->hw;
2770         u16 vector;
2771         int i, q;
2772         u32 val;
2773         u32 qp;
2774
2775         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
2776          * and PFINT_LNKLSTn registers, e.g.:
2777          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
2778          */
2779         qp = vsi->base_queue;
2780         vector = vsi->base_vector;
2781         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
2782                 q_vector = vsi->q_vectors[i];
2783                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2784                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
2785                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
2786                      q_vector->rx.itr);
2787                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2788                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
2789                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
2790                      q_vector->tx.itr);
2791
2792                 /* Linked list for the queuepairs assigned to this vector */
2793                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
2794                 for (q = 0; q < q_vector->num_ringpairs; q++) {
2795                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
2796                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
2797                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
2798                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
2799                               (I40E_QUEUE_TYPE_TX
2800                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
2801
2802                         wr32(hw, I40E_QINT_RQCTL(qp), val);
2803
2804                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
2805                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
2806                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
2807                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
2808                               (I40E_QUEUE_TYPE_RX
2809                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2810
2811                         /* Terminate the linked list */
2812                         if (q == (q_vector->num_ringpairs - 1))
2813                                 val |= (I40E_QUEUE_END_OF_LIST
2814                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2815
2816                         wr32(hw, I40E_QINT_TQCTL(qp), val);
2817                         qp++;
2818                 }
2819         }
2820
2821         i40e_flush(hw);
2822 }
2823
2824 /**
2825  * i40e_enable_misc_int_causes - enable the non-queue interrupts
2826  * @hw: ptr to the hardware info
2827  **/
2828 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
2829 {
2830         struct i40e_hw *hw = &pf->hw;
2831         u32 val;
2832
2833         /* clear things first */
2834         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
2835         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
2836
2837         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
2838               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
2839               I40E_PFINT_ICR0_ENA_GRST_MASK          |
2840               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
2841               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
2842               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
2843               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
2844               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
2845
2846         if (pf->flags & I40E_FLAG_PTP)
2847                 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
2848
2849         wr32(hw, I40E_PFINT_ICR0_ENA, val);
2850
2851         /* SW_ITR_IDX = 0, but don't change INTENA */
2852         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
2853                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
2854
2855         /* OTHER_ITR_IDX = 0 */
2856         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
2857 }
2858
2859 /**
2860  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
2861  * @vsi: the VSI being configured
2862  **/
2863 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
2864 {
2865         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
2866         struct i40e_pf *pf = vsi->back;
2867         struct i40e_hw *hw = &pf->hw;
2868         u32 val;
2869
2870         /* set the ITR configuration */
2871         q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2872         q_vector->rx.latency_range = I40E_LOW_LATENCY;
2873         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
2874         q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2875         q_vector->tx.latency_range = I40E_LOW_LATENCY;
2876         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
2877
2878         i40e_enable_misc_int_causes(pf);
2879
2880         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
2881         wr32(hw, I40E_PFINT_LNKLST0, 0);
2882
2883         /* Associate the queue pair to the vector and enable the queue int */
2884         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
2885               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
2886               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2887
2888         wr32(hw, I40E_QINT_RQCTL(0), val);
2889
2890         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
2891               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
2892               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2893
2894         wr32(hw, I40E_QINT_TQCTL(0), val);
2895         i40e_flush(hw);
2896 }
2897
2898 /**
2899  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
2900  * @pf: board private structure
2901  **/
2902 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
2903 {
2904         struct i40e_hw *hw = &pf->hw;
2905
2906         wr32(hw, I40E_PFINT_DYN_CTL0,
2907              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
2908         i40e_flush(hw);
2909 }
2910
2911 /**
2912  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
2913  * @pf: board private structure
2914  **/
2915 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
2916 {
2917         struct i40e_hw *hw = &pf->hw;
2918         u32 val;
2919
2920         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
2921               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
2922               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
2923
2924         wr32(hw, I40E_PFINT_DYN_CTL0, val);
2925         i40e_flush(hw);
2926 }
2927
2928 /**
2929  * i40e_irq_dynamic_enable - Enable default interrupt generation settings
2930  * @vsi: pointer to a vsi
2931  * @vector: enable a particular Hw Interrupt vector
2932  **/
2933 void i40e_irq_dynamic_enable(struct i40e_vsi *vsi, int vector)
2934 {
2935         struct i40e_pf *pf = vsi->back;
2936         struct i40e_hw *hw = &pf->hw;
2937         u32 val;
2938
2939         val = I40E_PFINT_DYN_CTLN_INTENA_MASK |
2940               I40E_PFINT_DYN_CTLN_CLEARPBA_MASK |
2941               (I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
2942         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
2943         /* skip the flush */
2944 }
2945
2946 /**
2947  * i40e_irq_dynamic_disable - Disable default interrupt generation settings
2948  * @vsi: pointer to a vsi
2949  * @vector: disable a particular Hw Interrupt vector
2950  **/
2951 void i40e_irq_dynamic_disable(struct i40e_vsi *vsi, int vector)
2952 {
2953         struct i40e_pf *pf = vsi->back;
2954         struct i40e_hw *hw = &pf->hw;
2955         u32 val;
2956
2957         val = I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT;
2958         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
2959         i40e_flush(hw);
2960 }
2961
2962 /**
2963  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
2964  * @irq: interrupt number
2965  * @data: pointer to a q_vector
2966  **/
2967 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
2968 {
2969         struct i40e_q_vector *q_vector = data;
2970
2971         if (!q_vector->tx.ring && !q_vector->rx.ring)
2972                 return IRQ_HANDLED;
2973
2974         napi_schedule(&q_vector->napi);
2975
2976         return IRQ_HANDLED;
2977 }
2978
2979 /**
2980  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
2981  * @vsi: the VSI being configured
2982  * @basename: name for the vector
2983  *
2984  * Allocates MSI-X vectors and requests interrupts from the kernel.
2985  **/
2986 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
2987 {
2988         int q_vectors = vsi->num_q_vectors;
2989         struct i40e_pf *pf = vsi->back;
2990         int base = vsi->base_vector;
2991         int rx_int_idx = 0;
2992         int tx_int_idx = 0;
2993         int vector, err;
2994
2995         for (vector = 0; vector < q_vectors; vector++) {
2996                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
2997
2998                 if (q_vector->tx.ring && q_vector->rx.ring) {
2999                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3000                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
3001                         tx_int_idx++;
3002                 } else if (q_vector->rx.ring) {
3003                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3004                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
3005                 } else if (q_vector->tx.ring) {
3006                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3007                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
3008                 } else {
3009                         /* skip this unused q_vector */
3010                         continue;
3011                 }
3012                 err = request_irq(pf->msix_entries[base + vector].vector,
3013                                   vsi->irq_handler,
3014                                   0,
3015                                   q_vector->name,
3016                                   q_vector);
3017                 if (err) {
3018                         dev_info(&pf->pdev->dev,
3019                                  "%s: request_irq failed, error: %d\n",
3020                                  __func__, err);
3021                         goto free_queue_irqs;
3022                 }
3023                 /* assign the mask for this irq */
3024                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3025                                       &q_vector->affinity_mask);
3026         }
3027
3028         vsi->irqs_ready = true;
3029         return 0;
3030
3031 free_queue_irqs:
3032         while (vector) {
3033                 vector--;
3034                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3035                                       NULL);
3036                 free_irq(pf->msix_entries[base + vector].vector,
3037                          &(vsi->q_vectors[vector]));
3038         }
3039         return err;
3040 }
3041
3042 /**
3043  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3044  * @vsi: the VSI being un-configured
3045  **/
3046 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3047 {
3048         struct i40e_pf *pf = vsi->back;
3049         struct i40e_hw *hw = &pf->hw;
3050         int base = vsi->base_vector;
3051         int i;
3052
3053         for (i = 0; i < vsi->num_queue_pairs; i++) {
3054                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3055                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3056         }
3057
3058         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3059                 for (i = vsi->base_vector;
3060                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3061                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3062
3063                 i40e_flush(hw);
3064                 for (i = 0; i < vsi->num_q_vectors; i++)
3065                         synchronize_irq(pf->msix_entries[i + base].vector);
3066         } else {
3067                 /* Legacy and MSI mode - this stops all interrupt handling */
3068                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3069                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3070                 i40e_flush(hw);
3071                 synchronize_irq(pf->pdev->irq);
3072         }
3073 }
3074
3075 /**
3076  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3077  * @vsi: the VSI being configured
3078  **/
3079 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3080 {
3081         struct i40e_pf *pf = vsi->back;
3082         int i;
3083
3084         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3085                 for (i = vsi->base_vector;
3086                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3087                         i40e_irq_dynamic_enable(vsi, i);
3088         } else {
3089                 i40e_irq_dynamic_enable_icr0(pf);
3090         }
3091
3092         i40e_flush(&pf->hw);
3093         return 0;
3094 }
3095
3096 /**
3097  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3098  * @pf: board private structure
3099  **/
3100 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3101 {
3102         /* Disable ICR 0 */
3103         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3104         i40e_flush(&pf->hw);
3105 }
3106
3107 /**
3108  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3109  * @irq: interrupt number
3110  * @data: pointer to a q_vector
3111  *
3112  * This is the handler used for all MSI/Legacy interrupts, and deals
3113  * with both queue and non-queue interrupts.  This is also used in
3114  * MSIX mode to handle the non-queue interrupts.
3115  **/
3116 static irqreturn_t i40e_intr(int irq, void *data)
3117 {
3118         struct i40e_pf *pf = (struct i40e_pf *)data;
3119         struct i40e_hw *hw = &pf->hw;
3120         irqreturn_t ret = IRQ_NONE;
3121         u32 icr0, icr0_remaining;
3122         u32 val, ena_mask;
3123
3124         icr0 = rd32(hw, I40E_PFINT_ICR0);
3125         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3126
3127         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3128         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3129                 goto enable_intr;
3130
3131         /* if interrupt but no bits showing, must be SWINT */
3132         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3133             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3134                 pf->sw_int_count++;
3135
3136         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3137         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3138
3139                 /* temporarily disable queue cause for NAPI processing */
3140                 u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
3141                 qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
3142                 wr32(hw, I40E_QINT_RQCTL(0), qval);
3143
3144                 qval = rd32(hw, I40E_QINT_TQCTL(0));
3145                 qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
3146                 wr32(hw, I40E_QINT_TQCTL(0), qval);
3147
3148                 if (!test_bit(__I40E_DOWN, &pf->state))
3149                         napi_schedule(&pf->vsi[pf->lan_vsi]->q_vectors[0]->napi);
3150         }
3151
3152         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3153                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3154                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3155         }
3156
3157         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3158                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3159                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3160         }
3161
3162         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3163                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3164                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3165         }
3166
3167         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3168                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3169                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3170                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3171                 val = rd32(hw, I40E_GLGEN_RSTAT);
3172                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3173                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3174                 if (val == I40E_RESET_CORER) {
3175                         pf->corer_count++;
3176                 } else if (val == I40E_RESET_GLOBR) {
3177                         pf->globr_count++;
3178                 } else if (val == I40E_RESET_EMPR) {
3179                         pf->empr_count++;
3180                         set_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state);
3181                 }
3182         }
3183
3184         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3185                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3186                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3187         }
3188
3189         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3190                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3191
3192                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3193                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3194                         i40e_ptp_tx_hwtstamp(pf);
3195                 }
3196         }
3197
3198         /* If a critical error is pending we have no choice but to reset the
3199          * device.
3200          * Report and mask out any remaining unexpected interrupts.
3201          */
3202         icr0_remaining = icr0 & ena_mask;
3203         if (icr0_remaining) {
3204                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3205                          icr0_remaining);
3206                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3207                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3208                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3209                         dev_info(&pf->pdev->dev, "device will be reset\n");
3210                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3211                         i40e_service_event_schedule(pf);
3212                 }
3213                 ena_mask &= ~icr0_remaining;
3214         }
3215         ret = IRQ_HANDLED;
3216
3217 enable_intr:
3218         /* re-enable interrupt causes */
3219         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3220         if (!test_bit(__I40E_DOWN, &pf->state)) {
3221                 i40e_service_event_schedule(pf);
3222                 i40e_irq_dynamic_enable_icr0(pf);
3223         }
3224
3225         return ret;
3226 }
3227
3228 /**
3229  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3230  * @tx_ring:  tx ring to clean
3231  * @budget:   how many cleans we're allowed
3232  *
3233  * Returns true if there's any budget left (e.g. the clean is finished)
3234  **/
3235 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3236 {
3237         struct i40e_vsi *vsi = tx_ring->vsi;
3238         u16 i = tx_ring->next_to_clean;
3239         struct i40e_tx_buffer *tx_buf;
3240         struct i40e_tx_desc *tx_desc;
3241
3242         tx_buf = &tx_ring->tx_bi[i];
3243         tx_desc = I40E_TX_DESC(tx_ring, i);
3244         i -= tx_ring->count;
3245
3246         do {
3247                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3248
3249                 /* if next_to_watch is not set then there is no work pending */
3250                 if (!eop_desc)
3251                         break;
3252
3253                 /* prevent any other reads prior to eop_desc */
3254                 read_barrier_depends();
3255
3256                 /* if the descriptor isn't done, no work yet to do */
3257                 if (!(eop_desc->cmd_type_offset_bsz &
3258                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3259                         break;
3260
3261                 /* clear next_to_watch to prevent false hangs */
3262                 tx_buf->next_to_watch = NULL;
3263
3264                 tx_desc->buffer_addr = 0;
3265                 tx_desc->cmd_type_offset_bsz = 0;
3266                 /* move past filter desc */
3267                 tx_buf++;
3268                 tx_desc++;
3269                 i++;
3270                 if (unlikely(!i)) {
3271                         i -= tx_ring->count;
3272                         tx_buf = tx_ring->tx_bi;
3273                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3274                 }
3275                 /* unmap skb header data */
3276                 dma_unmap_single(tx_ring->dev,
3277                                  dma_unmap_addr(tx_buf, dma),
3278                                  dma_unmap_len(tx_buf, len),
3279                                  DMA_TO_DEVICE);
3280                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3281                         kfree(tx_buf->raw_buf);
3282
3283                 tx_buf->raw_buf = NULL;
3284                 tx_buf->tx_flags = 0;
3285                 tx_buf->next_to_watch = NULL;
3286                 dma_unmap_len_set(tx_buf, len, 0);
3287                 tx_desc->buffer_addr = 0;
3288                 tx_desc->cmd_type_offset_bsz = 0;
3289
3290                 /* move us past the eop_desc for start of next FD desc */
3291                 tx_buf++;
3292                 tx_desc++;
3293                 i++;
3294                 if (unlikely(!i)) {
3295                         i -= tx_ring->count;
3296                         tx_buf = tx_ring->tx_bi;
3297                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3298                 }
3299
3300                 /* update budget accounting */
3301                 budget--;
3302         } while (likely(budget));
3303
3304         i += tx_ring->count;
3305         tx_ring->next_to_clean = i;
3306
3307         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED) {
3308                 i40e_irq_dynamic_enable(vsi,
3309                                 tx_ring->q_vector->v_idx + vsi->base_vector);
3310         }
3311         return budget > 0;
3312 }
3313
3314 /**
3315  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3316  * @irq: interrupt number
3317  * @data: pointer to a q_vector
3318  **/
3319 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3320 {
3321         struct i40e_q_vector *q_vector = data;
3322         struct i40e_vsi *vsi;
3323
3324         if (!q_vector->tx.ring)
3325                 return IRQ_HANDLED;
3326
3327         vsi = q_vector->tx.ring->vsi;
3328         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3329
3330         return IRQ_HANDLED;
3331 }
3332
3333 /**
3334  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3335  * @vsi: the VSI being configured
3336  * @v_idx: vector index
3337  * @qp_idx: queue pair index
3338  **/
3339 static void map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3340 {
3341         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3342         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3343         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3344
3345         tx_ring->q_vector = q_vector;
3346         tx_ring->next = q_vector->tx.ring;
3347         q_vector->tx.ring = tx_ring;
3348         q_vector->tx.count++;
3349
3350         rx_ring->q_vector = q_vector;
3351         rx_ring->next = q_vector->rx.ring;
3352         q_vector->rx.ring = rx_ring;
3353         q_vector->rx.count++;
3354 }
3355
3356 /**
3357  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3358  * @vsi: the VSI being configured
3359  *
3360  * This function maps descriptor rings to the queue-specific vectors
3361  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3362  * one vector per queue pair, but on a constrained vector budget, we
3363  * group the queue pairs as "efficiently" as possible.
3364  **/
3365 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3366 {
3367         int qp_remaining = vsi->num_queue_pairs;
3368         int q_vectors = vsi->num_q_vectors;
3369         int num_ringpairs;
3370         int v_start = 0;
3371         int qp_idx = 0;
3372
3373         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3374          * group them so there are multiple queues per vector.
3375          * It is also important to go through all the vectors available to be
3376          * sure that if we don't use all the vectors, that the remaining vectors
3377          * are cleared. This is especially important when decreasing the
3378          * number of queues in use.
3379          */
3380         for (; v_start < q_vectors; v_start++) {
3381                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3382
3383                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3384
3385                 q_vector->num_ringpairs = num_ringpairs;
3386
3387                 q_vector->rx.count = 0;
3388                 q_vector->tx.count = 0;
3389                 q_vector->rx.ring = NULL;
3390                 q_vector->tx.ring = NULL;
3391
3392                 while (num_ringpairs--) {
3393                         map_vector_to_qp(vsi, v_start, qp_idx);
3394                         qp_idx++;
3395                         qp_remaining--;
3396                 }
3397         }
3398 }
3399
3400 /**
3401  * i40e_vsi_request_irq - Request IRQ from the OS
3402  * @vsi: the VSI being configured
3403  * @basename: name for the vector
3404  **/
3405 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3406 {
3407         struct i40e_pf *pf = vsi->back;
3408         int err;
3409
3410         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3411                 err = i40e_vsi_request_irq_msix(vsi, basename);
3412         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3413                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3414                                   pf->int_name, pf);
3415         else
3416                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3417                                   pf->int_name, pf);
3418
3419         if (err)
3420                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3421
3422         return err;
3423 }
3424
3425 #ifdef CONFIG_NET_POLL_CONTROLLER
3426 /**
3427  * i40e_netpoll - A Polling 'interrupt'handler
3428  * @netdev: network interface device structure
3429  *
3430  * This is used by netconsole to send skbs without having to re-enable
3431  * interrupts.  It's not called while the normal interrupt routine is executing.
3432  **/
3433 #ifdef I40E_FCOE
3434 void i40e_netpoll(struct net_device *netdev)
3435 #else
3436 static void i40e_netpoll(struct net_device *netdev)
3437 #endif
3438 {
3439         struct i40e_netdev_priv *np = netdev_priv(netdev);
3440         struct i40e_vsi *vsi = np->vsi;
3441         struct i40e_pf *pf = vsi->back;
3442         int i;
3443
3444         /* if interface is down do nothing */
3445         if (test_bit(__I40E_DOWN, &vsi->state))
3446                 return;
3447
3448         pf->flags |= I40E_FLAG_IN_NETPOLL;
3449         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3450                 for (i = 0; i < vsi->num_q_vectors; i++)
3451                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3452         } else {
3453                 i40e_intr(pf->pdev->irq, netdev);
3454         }
3455         pf->flags &= ~I40E_FLAG_IN_NETPOLL;
3456 }
3457 #endif
3458
3459 /**
3460  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3461  * @pf: the PF being configured
3462  * @pf_q: the PF queue
3463  * @enable: enable or disable state of the queue
3464  *
3465  * This routine will wait for the given Tx queue of the PF to reach the
3466  * enabled or disabled state.
3467  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3468  * multiple retries; else will return 0 in case of success.
3469  **/
3470 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3471 {
3472         int i;
3473         u32 tx_reg;
3474
3475         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3476                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3477                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3478                         break;
3479
3480                 usleep_range(10, 20);
3481         }
3482         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3483                 return -ETIMEDOUT;
3484
3485         return 0;
3486 }
3487
3488 /**
3489  * i40e_vsi_control_tx - Start or stop a VSI's rings
3490  * @vsi: the VSI being configured
3491  * @enable: start or stop the rings
3492  **/
3493 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3494 {
3495         struct i40e_pf *pf = vsi->back;
3496         struct i40e_hw *hw = &pf->hw;
3497         int i, j, pf_q, ret = 0;
3498         u32 tx_reg;
3499
3500         pf_q = vsi->base_queue;
3501         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3502
3503                 /* warn the TX unit of coming changes */
3504                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3505                 if (!enable)
3506                         usleep_range(10, 20);
3507
3508                 for (j = 0; j < 50; j++) {
3509                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3510                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3511                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3512                                 break;
3513                         usleep_range(1000, 2000);
3514                 }
3515                 /* Skip if the queue is already in the requested state */
3516                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3517                         continue;
3518
3519                 /* turn on/off the queue */
3520                 if (enable) {
3521                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3522                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3523                 } else {
3524                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3525                 }
3526
3527                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3528                 /* No waiting for the Tx queue to disable */
3529                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3530                         continue;
3531
3532                 /* wait for the change to finish */
3533                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3534                 if (ret) {
3535                         dev_info(&pf->pdev->dev,
3536                                  "%s: VSI seid %d Tx ring %d %sable timeout\n",
3537                                  __func__, vsi->seid, pf_q,
3538                                  (enable ? "en" : "dis"));
3539                         break;
3540                 }
3541         }
3542
3543         if (hw->revision_id == 0)
3544                 mdelay(50);
3545         return ret;
3546 }
3547
3548 /**
3549  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
3550  * @pf: the PF being configured
3551  * @pf_q: the PF queue
3552  * @enable: enable or disable state of the queue
3553  *
3554  * This routine will wait for the given Rx queue of the PF to reach the
3555  * enabled or disabled state.
3556  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3557  * multiple retries; else will return 0 in case of success.
3558  **/
3559 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3560 {
3561         int i;
3562         u32 rx_reg;
3563
3564         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3565                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
3566                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3567                         break;
3568
3569                 usleep_range(10, 20);
3570         }
3571         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3572                 return -ETIMEDOUT;
3573
3574         return 0;
3575 }
3576
3577 /**
3578  * i40e_vsi_control_rx - Start or stop a VSI's rings
3579  * @vsi: the VSI being configured
3580  * @enable: start or stop the rings
3581  **/
3582 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3583 {
3584         struct i40e_pf *pf = vsi->back;
3585         struct i40e_hw *hw = &pf->hw;
3586         int i, j, pf_q, ret = 0;
3587         u32 rx_reg;
3588
3589         pf_q = vsi->base_queue;
3590         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3591                 for (j = 0; j < 50; j++) {
3592                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3593                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3594                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3595                                 break;
3596                         usleep_range(1000, 2000);
3597                 }
3598
3599                 /* Skip if the queue is already in the requested state */
3600                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3601                         continue;
3602
3603                 /* turn on/off the queue */
3604                 if (enable)
3605                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3606                 else
3607                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3608                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3609
3610                 /* wait for the change to finish */
3611                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
3612                 if (ret) {
3613                         dev_info(&pf->pdev->dev,
3614                                  "%s: VSI seid %d Rx ring %d %sable timeout\n",
3615                                  __func__, vsi->seid, pf_q,
3616                                  (enable ? "en" : "dis"));
3617                         break;
3618                 }
3619         }
3620
3621         return ret;
3622 }
3623
3624 /**
3625  * i40e_vsi_control_rings - Start or stop a VSI's rings
3626  * @vsi: the VSI being configured
3627  * @enable: start or stop the rings
3628  **/
3629 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3630 {
3631         int ret = 0;
3632
3633         /* do rx first for enable and last for disable */
3634         if (request) {
3635                 ret = i40e_vsi_control_rx(vsi, request);
3636                 if (ret)
3637                         return ret;
3638                 ret = i40e_vsi_control_tx(vsi, request);
3639         } else {
3640                 /* Ignore return value, we need to shutdown whatever we can */
3641                 i40e_vsi_control_tx(vsi, request);
3642                 i40e_vsi_control_rx(vsi, request);
3643         }
3644
3645         return ret;
3646 }
3647
3648 /**
3649  * i40e_vsi_free_irq - Free the irq association with the OS
3650  * @vsi: the VSI being configured
3651  **/
3652 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3653 {
3654         struct i40e_pf *pf = vsi->back;
3655         struct i40e_hw *hw = &pf->hw;
3656         int base = vsi->base_vector;
3657         u32 val, qp;
3658         int i;
3659
3660         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3661                 if (!vsi->q_vectors)
3662                         return;
3663
3664                 if (!vsi->irqs_ready)
3665                         return;
3666
3667                 vsi->irqs_ready = false;
3668                 for (i = 0; i < vsi->num_q_vectors; i++) {
3669                         u16 vector = i + base;
3670
3671                         /* free only the irqs that were actually requested */
3672                         if (!vsi->q_vectors[i] ||
3673                             !vsi->q_vectors[i]->num_ringpairs)
3674                                 continue;
3675
3676                         /* clear the affinity_mask in the IRQ descriptor */
3677                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
3678                                               NULL);
3679                         free_irq(pf->msix_entries[vector].vector,
3680                                  vsi->q_vectors[i]);
3681
3682                         /* Tear down the interrupt queue link list
3683                          *
3684                          * We know that they come in pairs and always
3685                          * the Rx first, then the Tx.  To clear the
3686                          * link list, stick the EOL value into the
3687                          * next_q field of the registers.
3688                          */
3689                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
3690                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3691                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3692                         val |= I40E_QUEUE_END_OF_LIST
3693                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3694                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
3695
3696                         while (qp != I40E_QUEUE_END_OF_LIST) {
3697                                 u32 next;
3698
3699                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3700
3701                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3702                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3703                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3704                                          I40E_QINT_RQCTL_INTEVENT_MASK);
3705
3706                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3707                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3708
3709                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3710
3711                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3712
3713                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
3714                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
3715
3716                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3717                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3718                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3719                                          I40E_QINT_TQCTL_INTEVENT_MASK);
3720
3721                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3722                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3723
3724                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3725                                 qp = next;
3726                         }
3727                 }
3728         } else {
3729                 free_irq(pf->pdev->irq, pf);
3730
3731                 val = rd32(hw, I40E_PFINT_LNKLST0);
3732                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3733                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3734                 val |= I40E_QUEUE_END_OF_LIST
3735                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
3736                 wr32(hw, I40E_PFINT_LNKLST0, val);
3737
3738                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3739                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3740                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3741                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3742                          I40E_QINT_RQCTL_INTEVENT_MASK);
3743
3744                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3745                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3746
3747                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3748
3749                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3750
3751                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3752                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3753                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3754                          I40E_QINT_TQCTL_INTEVENT_MASK);
3755
3756                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3757                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3758
3759                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3760         }
3761 }
3762
3763 /**
3764  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
3765  * @vsi: the VSI being configured
3766  * @v_idx: Index of vector to be freed
3767  *
3768  * This function frees the memory allocated to the q_vector.  In addition if
3769  * NAPI is enabled it will delete any references to the NAPI struct prior
3770  * to freeing the q_vector.
3771  **/
3772 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
3773 {
3774         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3775         struct i40e_ring *ring;
3776
3777         if (!q_vector)
3778                 return;
3779
3780         /* disassociate q_vector from rings */
3781         i40e_for_each_ring(ring, q_vector->tx)
3782                 ring->q_vector = NULL;
3783
3784         i40e_for_each_ring(ring, q_vector->rx)
3785                 ring->q_vector = NULL;
3786
3787         /* only VSI w/ an associated netdev is set up w/ NAPI */
3788         if (vsi->netdev)
3789                 netif_napi_del(&q_vector->napi);
3790
3791         vsi->q_vectors[v_idx] = NULL;
3792
3793         kfree_rcu(q_vector, rcu);
3794 }
3795
3796 /**
3797  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
3798  * @vsi: the VSI being un-configured
3799  *
3800  * This frees the memory allocated to the q_vectors and
3801  * deletes references to the NAPI struct.
3802  **/
3803 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
3804 {
3805         int v_idx;
3806
3807         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
3808                 i40e_free_q_vector(vsi, v_idx);
3809 }
3810
3811 /**
3812  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
3813  * @pf: board private structure
3814  **/
3815 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
3816 {
3817         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
3818         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3819                 pci_disable_msix(pf->pdev);
3820                 kfree(pf->msix_entries);
3821                 pf->msix_entries = NULL;
3822         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
3823                 pci_disable_msi(pf->pdev);
3824         }
3825         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
3826 }
3827
3828 /**
3829  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
3830  * @pf: board private structure
3831  *
3832  * We go through and clear interrupt specific resources and reset the structure
3833  * to pre-load conditions
3834  **/
3835 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
3836 {
3837         int i;
3838
3839         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
3840         for (i = 0; i < pf->num_alloc_vsi; i++)
3841                 if (pf->vsi[i])
3842                         i40e_vsi_free_q_vectors(pf->vsi[i]);
3843         i40e_reset_interrupt_capability(pf);
3844 }
3845
3846 /**
3847  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
3848  * @vsi: the VSI being configured
3849  **/
3850 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
3851 {
3852         int q_idx;
3853
3854         if (!vsi->netdev)
3855                 return;
3856
3857         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3858                 napi_enable(&vsi->q_vectors[q_idx]->napi);
3859 }
3860
3861 /**
3862  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
3863  * @vsi: the VSI being configured
3864  **/
3865 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
3866 {
3867         int q_idx;
3868
3869         if (!vsi->netdev)
3870                 return;
3871
3872         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3873                 napi_disable(&vsi->q_vectors[q_idx]->napi);
3874 }
3875
3876 /**
3877  * i40e_vsi_close - Shut down a VSI
3878  * @vsi: the vsi to be quelled
3879  **/
3880 static void i40e_vsi_close(struct i40e_vsi *vsi)
3881 {
3882         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
3883                 i40e_down(vsi);
3884         i40e_vsi_free_irq(vsi);
3885         i40e_vsi_free_tx_resources(vsi);
3886         i40e_vsi_free_rx_resources(vsi);
3887 }
3888
3889 /**
3890  * i40e_quiesce_vsi - Pause a given VSI
3891  * @vsi: the VSI being paused
3892  **/
3893 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
3894 {
3895         if (test_bit(__I40E_DOWN, &vsi->state))
3896                 return;
3897
3898         /* No need to disable FCoE VSI when Tx suspended */
3899         if ((test_bit(__I40E_PORT_TX_SUSPENDED, &vsi->back->state)) &&
3900             vsi->type == I40E_VSI_FCOE) {
3901                 dev_dbg(&vsi->back->pdev->dev,
3902                         "%s: VSI seid %d skipping FCoE VSI disable\n",
3903                          __func__, vsi->seid);
3904                 return;
3905         }
3906
3907         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
3908         if (vsi->netdev && netif_running(vsi->netdev)) {
3909                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
3910         } else {
3911                 i40e_vsi_close(vsi);
3912         }
3913 }
3914
3915 /**
3916  * i40e_unquiesce_vsi - Resume a given VSI
3917  * @vsi: the VSI being resumed
3918  **/
3919 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
3920 {
3921         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
3922                 return;
3923
3924         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
3925         if (vsi->netdev && netif_running(vsi->netdev))
3926                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
3927         else
3928                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
3929 }
3930
3931 /**
3932  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
3933  * @pf: the PF
3934  **/
3935 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
3936 {
3937         int v;
3938
3939         for (v = 0; v < pf->num_alloc_vsi; v++) {
3940                 if (pf->vsi[v])
3941                         i40e_quiesce_vsi(pf->vsi[v]);
3942         }
3943 }
3944
3945 /**
3946  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
3947  * @pf: the PF
3948  **/
3949 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
3950 {
3951         int v;
3952
3953         for (v = 0; v < pf->num_alloc_vsi; v++) {
3954                 if (pf->vsi[v])
3955                         i40e_unquiesce_vsi(pf->vsi[v]);
3956         }
3957 }
3958
3959 #ifdef CONFIG_I40E_DCB
3960 /**
3961  * i40e_vsi_wait_txq_disabled - Wait for VSI's queues to be disabled
3962  * @vsi: the VSI being configured
3963  *
3964  * This function waits for the given VSI's Tx queues to be disabled.
3965  **/
3966 static int i40e_vsi_wait_txq_disabled(struct i40e_vsi *vsi)
3967 {
3968         struct i40e_pf *pf = vsi->back;
3969         int i, pf_q, ret;
3970
3971         pf_q = vsi->base_queue;
3972         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3973                 /* Check and wait for the disable status of the queue */
3974                 ret = i40e_pf_txq_wait(pf, pf_q, false);
3975                 if (ret) {
3976                         dev_info(&pf->pdev->dev,
3977                                  "%s: VSI seid %d Tx ring %d disable timeout\n",
3978                                  __func__, vsi->seid, pf_q);
3979                         return ret;
3980                 }
3981         }
3982
3983         return 0;
3984 }
3985
3986 /**
3987  * i40e_pf_wait_txq_disabled - Wait for all queues of PF VSIs to be disabled
3988  * @pf: the PF
3989  *
3990  * This function waits for the Tx queues to be in disabled state for all the
3991  * VSIs that are managed by this PF.
3992  **/
3993 static int i40e_pf_wait_txq_disabled(struct i40e_pf *pf)
3994 {
3995         int v, ret = 0;
3996
3997         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
3998                 /* No need to wait for FCoE VSI queues */
3999                 if (pf->vsi[v] && pf->vsi[v]->type != I40E_VSI_FCOE) {
4000                         ret = i40e_vsi_wait_txq_disabled(pf->vsi[v]);
4001                         if (ret)
4002                                 break;
4003                 }
4004         }
4005
4006         return ret;
4007 }
4008
4009 #endif
4010 /**
4011  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
4012  * @pf: pointer to pf
4013  *
4014  * Get TC map for ISCSI PF type that will include iSCSI TC
4015  * and LAN TC.
4016  **/
4017 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
4018 {
4019         struct i40e_dcb_app_priority_table app;
4020         struct i40e_hw *hw = &pf->hw;
4021         u8 enabled_tc = 1; /* TC0 is always enabled */
4022         u8 tc, i;
4023         /* Get the iSCSI APP TLV */
4024         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4025
4026         for (i = 0; i < dcbcfg->numapps; i++) {
4027                 app = dcbcfg->app[i];
4028                 if (app.selector == I40E_APP_SEL_TCPIP &&
4029                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
4030                         tc = dcbcfg->etscfg.prioritytable[app.priority];
4031                         enabled_tc |= (1 << tc);
4032                         break;
4033                 }
4034         }
4035
4036         return enabled_tc;
4037 }
4038
4039 /**
4040  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
4041  * @dcbcfg: the corresponding DCBx configuration structure
4042  *
4043  * Return the number of TCs from given DCBx configuration
4044  **/
4045 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
4046 {
4047         u8 num_tc = 0;
4048         int i;
4049
4050         /* Scan the ETS Config Priority Table to find
4051          * traffic class enabled for a given priority
4052          * and use the traffic class index to get the
4053          * number of traffic classes enabled
4054          */
4055         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4056                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
4057                         num_tc = dcbcfg->etscfg.prioritytable[i];
4058         }
4059
4060         /* Traffic class index starts from zero so
4061          * increment to return the actual count
4062          */
4063         return num_tc + 1;
4064 }
4065
4066 /**
4067  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
4068  * @dcbcfg: the corresponding DCBx configuration structure
4069  *
4070  * Query the current DCB configuration and return the number of
4071  * traffic classes enabled from the given DCBX config
4072  **/
4073 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
4074 {
4075         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
4076         u8 enabled_tc = 1;
4077         u8 i;
4078
4079         for (i = 0; i < num_tc; i++)
4080                 enabled_tc |= 1 << i;
4081
4082         return enabled_tc;
4083 }
4084
4085 /**
4086  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
4087  * @pf: PF being queried
4088  *
4089  * Return number of traffic classes enabled for the given PF
4090  **/
4091 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
4092 {
4093         struct i40e_hw *hw = &pf->hw;
4094         u8 i, enabled_tc;
4095         u8 num_tc = 0;
4096         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4097
4098         /* If DCB is not enabled then always in single TC */
4099         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4100                 return 1;
4101
4102         /* SFP mode will be enabled for all TCs on port */
4103         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4104                 return i40e_dcb_get_num_tc(dcbcfg);
4105
4106         /* MFP mode return count of enabled TCs for this PF */
4107         if (pf->hw.func_caps.iscsi)
4108                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
4109         else
4110                 return 1; /* Only TC0 */
4111
4112         /* At least have TC0 */
4113         enabled_tc = (enabled_tc ? enabled_tc : 0x1);
4114         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4115                 if (enabled_tc & (1 << i))
4116                         num_tc++;
4117         }
4118         return num_tc;
4119 }
4120
4121 /**
4122  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
4123  * @pf: PF being queried
4124  *
4125  * Return a bitmap for first enabled traffic class for this PF.
4126  **/
4127 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
4128 {
4129         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
4130         u8 i = 0;
4131
4132         if (!enabled_tc)
4133                 return 0x1; /* TC0 */
4134
4135         /* Find the first enabled TC */
4136         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4137                 if (enabled_tc & (1 << i))
4138                         break;
4139         }
4140
4141         return 1 << i;
4142 }
4143
4144 /**
4145  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4146  * @pf: PF being queried
4147  *
4148  * Return a bitmap for enabled traffic classes for this PF.
4149  **/
4150 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4151 {
4152         /* If DCB is not enabled for this PF then just return default TC */
4153         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4154                 return i40e_pf_get_default_tc(pf);
4155
4156         /* SFP mode we want PF to be enabled for all TCs */
4157         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4158                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4159
4160         /* MFP enabled and iSCSI PF type */
4161         if (pf->hw.func_caps.iscsi)
4162                 return i40e_get_iscsi_tc_map(pf);
4163         else
4164                 return i40e_pf_get_default_tc(pf);
4165 }
4166
4167 /**
4168  * i40e_vsi_get_bw_info - Query VSI BW Information
4169  * @vsi: the VSI being queried
4170  *
4171  * Returns 0 on success, negative value on failure
4172  **/
4173 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4174 {
4175         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4176         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4177         struct i40e_pf *pf = vsi->back;
4178         struct i40e_hw *hw = &pf->hw;
4179         i40e_status aq_ret;
4180         u32 tc_bw_max;
4181         int i;
4182
4183         /* Get the VSI level BW configuration */
4184         aq_ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4185         if (aq_ret) {
4186                 dev_info(&pf->pdev->dev,
4187                          "couldn't get pf vsi bw config, err %d, aq_err %d\n",
4188                          aq_ret, pf->hw.aq.asq_last_status);
4189                 return -EINVAL;
4190         }
4191
4192         /* Get the VSI level BW configuration per TC */
4193         aq_ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4194                                                   NULL);
4195         if (aq_ret) {
4196                 dev_info(&pf->pdev->dev,
4197                          "couldn't get pf vsi ets bw config, err %d, aq_err %d\n",
4198                          aq_ret, pf->hw.aq.asq_last_status);
4199                 return -EINVAL;
4200         }
4201
4202         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4203                 dev_info(&pf->pdev->dev,
4204                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4205                          bw_config.tc_valid_bits,
4206                          bw_ets_config.tc_valid_bits);
4207                 /* Still continuing */
4208         }
4209
4210         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4211         vsi->bw_max_quanta = bw_config.max_bw;
4212         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4213                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4214         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4215                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4216                 vsi->bw_ets_limit_credits[i] =
4217                                         le16_to_cpu(bw_ets_config.credits[i]);
4218                 /* 3 bits out of 4 for each TC */
4219                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4220         }
4221
4222         return 0;
4223 }
4224
4225 /**
4226  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4227  * @vsi: the VSI being configured
4228  * @enabled_tc: TC bitmap
4229  * @bw_credits: BW shared credits per TC
4230  *
4231  * Returns 0 on success, negative value on failure
4232  **/
4233 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4234                                        u8 *bw_share)
4235 {
4236         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4237         i40e_status aq_ret;
4238         int i;
4239
4240         bw_data.tc_valid_bits = enabled_tc;
4241         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4242                 bw_data.tc_bw_credits[i] = bw_share[i];
4243
4244         aq_ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4245                                           NULL);
4246         if (aq_ret) {
4247                 dev_info(&vsi->back->pdev->dev,
4248                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4249                          vsi->back->hw.aq.asq_last_status);
4250                 return -EINVAL;
4251         }
4252
4253         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4254                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4255
4256         return 0;
4257 }
4258
4259 /**
4260  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4261  * @vsi: the VSI being configured
4262  * @enabled_tc: TC map to be enabled
4263  *
4264  **/
4265 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4266 {
4267         struct net_device *netdev = vsi->netdev;
4268         struct i40e_pf *pf = vsi->back;
4269         struct i40e_hw *hw = &pf->hw;
4270         u8 netdev_tc = 0;
4271         int i;
4272         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4273
4274         if (!netdev)
4275                 return;
4276
4277         if (!enabled_tc) {
4278                 netdev_reset_tc(netdev);
4279                 return;
4280         }
4281
4282         /* Set up actual enabled TCs on the VSI */
4283         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4284                 return;
4285
4286         /* set per TC queues for the VSI */
4287         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4288                 /* Only set TC queues for enabled tcs
4289                  *
4290                  * e.g. For a VSI that has TC0 and TC3 enabled the
4291                  * enabled_tc bitmap would be 0x00001001; the driver
4292                  * will set the numtc for netdev as 2 that will be
4293                  * referenced by the netdev layer as TC 0 and 1.
4294                  */
4295                 if (vsi->tc_config.enabled_tc & (1 << i))
4296                         netdev_set_tc_queue(netdev,
4297                                         vsi->tc_config.tc_info[i].netdev_tc,
4298                                         vsi->tc_config.tc_info[i].qcount,
4299                                         vsi->tc_config.tc_info[i].qoffset);
4300         }
4301
4302         /* Assign UP2TC map for the VSI */
4303         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4304                 /* Get the actual TC# for the UP */
4305                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4306                 /* Get the mapped netdev TC# for the UP */
4307                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4308                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4309         }
4310 }
4311
4312 /**
4313  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4314  * @vsi: the VSI being configured
4315  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4316  **/
4317 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4318                                       struct i40e_vsi_context *ctxt)
4319 {
4320         /* copy just the sections touched not the entire info
4321          * since not all sections are valid as returned by
4322          * update vsi params
4323          */
4324         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4325         memcpy(&vsi->info.queue_mapping,
4326                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4327         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4328                sizeof(vsi->info.tc_mapping));
4329 }
4330
4331 /**
4332  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4333  * @vsi: VSI to be configured
4334  * @enabled_tc: TC bitmap
4335  *
4336  * This configures a particular VSI for TCs that are mapped to the
4337  * given TC bitmap. It uses default bandwidth share for TCs across
4338  * VSIs to configure TC for a particular VSI.
4339  *
4340  * NOTE:
4341  * It is expected that the VSI queues have been quisced before calling
4342  * this function.
4343  **/
4344 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4345 {
4346         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4347         struct i40e_vsi_context ctxt;
4348         int ret = 0;
4349         int i;
4350
4351         /* Check if enabled_tc is same as existing or new TCs */
4352         if (vsi->tc_config.enabled_tc == enabled_tc)
4353                 return ret;
4354
4355         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4356         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4357                 if (enabled_tc & (1 << i))
4358                         bw_share[i] = 1;
4359         }
4360
4361         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4362         if (ret) {
4363                 dev_info(&vsi->back->pdev->dev,
4364                          "Failed configuring TC map %d for VSI %d\n",
4365                          enabled_tc, vsi->seid);
4366                 goto out;
4367         }
4368
4369         /* Update Queue Pairs Mapping for currently enabled UPs */
4370         ctxt.seid = vsi->seid;
4371         ctxt.pf_num = vsi->back->hw.pf_id;
4372         ctxt.vf_num = 0;
4373         ctxt.uplink_seid = vsi->uplink_seid;
4374         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
4375         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4376
4377         /* Update the VSI after updating the VSI queue-mapping information */
4378         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4379         if (ret) {
4380                 dev_info(&vsi->back->pdev->dev,
4381                          "update vsi failed, aq_err=%d\n",
4382                          vsi->back->hw.aq.asq_last_status);
4383                 goto out;
4384         }
4385         /* update the local VSI info with updated queue map */
4386         i40e_vsi_update_queue_map(vsi, &ctxt);
4387         vsi->info.valid_sections = 0;
4388
4389         /* Update current VSI BW information */
4390         ret = i40e_vsi_get_bw_info(vsi);
4391         if (ret) {
4392                 dev_info(&vsi->back->pdev->dev,
4393                          "Failed updating vsi bw info, aq_err=%d\n",
4394                          vsi->back->hw.aq.asq_last_status);
4395                 goto out;
4396         }
4397
4398         /* Update the netdev TC setup */
4399         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4400 out:
4401         return ret;
4402 }
4403
4404 /**
4405  * i40e_veb_config_tc - Configure TCs for given VEB
4406  * @veb: given VEB
4407  * @enabled_tc: TC bitmap
4408  *
4409  * Configures given TC bitmap for VEB (switching) element
4410  **/
4411 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4412 {
4413         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4414         struct i40e_pf *pf = veb->pf;
4415         int ret = 0;
4416         int i;
4417
4418         /* No TCs or already enabled TCs just return */
4419         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4420                 return ret;
4421
4422         bw_data.tc_valid_bits = enabled_tc;
4423         /* bw_data.absolute_credits is not set (relative) */
4424
4425         /* Enable ETS TCs with equal BW Share for now */
4426         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4427                 if (enabled_tc & (1 << i))
4428                         bw_data.tc_bw_share_credits[i] = 1;
4429         }
4430
4431         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4432                                                    &bw_data, NULL);
4433         if (ret) {
4434                 dev_info(&pf->pdev->dev,
4435                          "veb bw config failed, aq_err=%d\n",
4436                          pf->hw.aq.asq_last_status);
4437                 goto out;
4438         }
4439
4440         /* Update the BW information */
4441         ret = i40e_veb_get_bw_info(veb);
4442         if (ret) {
4443                 dev_info(&pf->pdev->dev,
4444                          "Failed getting veb bw config, aq_err=%d\n",
4445                          pf->hw.aq.asq_last_status);
4446         }
4447
4448 out:
4449         return ret;
4450 }
4451
4452 #ifdef CONFIG_I40E_DCB
4453 /**
4454  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4455  * @pf: PF struct
4456  *
4457  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4458  * the caller would've quiesce all the VSIs before calling
4459  * this function
4460  **/
4461 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4462 {
4463         u8 tc_map = 0;
4464         int ret;
4465         u8 v;
4466
4467         /* Enable the TCs available on PF to all VEBs */
4468         tc_map = i40e_pf_get_tc_map(pf);
4469         for (v = 0; v < I40E_MAX_VEB; v++) {
4470                 if (!pf->veb[v])
4471                         continue;
4472                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4473                 if (ret) {
4474                         dev_info(&pf->pdev->dev,
4475                                  "Failed configuring TC for VEB seid=%d\n",
4476                                  pf->veb[v]->seid);
4477                         /* Will try to configure as many components */
4478                 }
4479         }
4480
4481         /* Update each VSI */
4482         for (v = 0; v < pf->num_alloc_vsi; v++) {
4483                 if (!pf->vsi[v])
4484                         continue;
4485
4486                 /* - Enable all TCs for the LAN VSI
4487 #ifdef I40E_FCOE
4488                  * - For FCoE VSI only enable the TC configured
4489                  *   as per the APP TLV
4490 #endif
4491                  * - For all others keep them at TC0 for now
4492                  */
4493                 if (v == pf->lan_vsi)
4494                         tc_map = i40e_pf_get_tc_map(pf);
4495                 else
4496                         tc_map = i40e_pf_get_default_tc(pf);
4497 #ifdef I40E_FCOE
4498                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
4499                         tc_map = i40e_get_fcoe_tc_map(pf);
4500 #endif /* #ifdef I40E_FCOE */
4501
4502                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4503                 if (ret) {
4504                         dev_info(&pf->pdev->dev,
4505                                  "Failed configuring TC for VSI seid=%d\n",
4506                                  pf->vsi[v]->seid);
4507                         /* Will try to configure as many components */
4508                 } else {
4509                         /* Re-configure VSI vectors based on updated TC map */
4510                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
4511                         if (pf->vsi[v]->netdev)
4512                                 i40e_dcbnl_set_all(pf->vsi[v]);
4513                 }
4514         }
4515 }
4516
4517 /**
4518  * i40e_resume_port_tx - Resume port Tx
4519  * @pf: PF struct
4520  *
4521  * Resume a port's Tx and issue a PF reset in case of failure to
4522  * resume.
4523  **/
4524 static int i40e_resume_port_tx(struct i40e_pf *pf)
4525 {
4526         struct i40e_hw *hw = &pf->hw;
4527         int ret;
4528
4529         ret = i40e_aq_resume_port_tx(hw, NULL);
4530         if (ret) {
4531                 dev_info(&pf->pdev->dev,
4532                          "AQ command Resume Port Tx failed = %d\n",
4533                           pf->hw.aq.asq_last_status);
4534                 /* Schedule PF reset to recover */
4535                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
4536                 i40e_service_event_schedule(pf);
4537         }
4538
4539         return ret;
4540 }
4541
4542 /**
4543  * i40e_init_pf_dcb - Initialize DCB configuration
4544  * @pf: PF being configured
4545  *
4546  * Query the current DCB configuration and cache it
4547  * in the hardware structure
4548  **/
4549 static int i40e_init_pf_dcb(struct i40e_pf *pf)
4550 {
4551         struct i40e_hw *hw = &pf->hw;
4552         int err = 0;
4553
4554         /* Do not enable DCB for SW1 and SW2 images even if the FW is capable */
4555         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
4556             (pf->hw.aq.fw_maj_ver < 4))
4557                 goto out;
4558
4559         /* Get the initial DCB configuration */
4560         err = i40e_init_dcb(hw);
4561         if (!err) {
4562                 /* Device/Function is not DCBX capable */
4563                 if ((!hw->func_caps.dcb) ||
4564                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
4565                         dev_info(&pf->pdev->dev,
4566                                  "DCBX offload is not supported or is disabled for this PF.\n");
4567
4568                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
4569                                 goto out;
4570
4571                 } else {
4572                         /* When status is not DISABLED then DCBX in FW */
4573                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
4574                                        DCB_CAP_DCBX_VER_IEEE;
4575
4576                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
4577                         /* Enable DCB tagging only when more than one TC */
4578                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
4579                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
4580                         dev_dbg(&pf->pdev->dev,
4581                                 "DCBX offload is supported for this PF.\n");
4582                 }
4583         } else {
4584                 dev_info(&pf->pdev->dev,
4585                          "AQ Querying DCB configuration failed: aq_err %d\n",
4586                          pf->hw.aq.asq_last_status);
4587         }
4588
4589 out:
4590         return err;
4591 }
4592 #endif /* CONFIG_I40E_DCB */
4593 #define SPEED_SIZE 14
4594 #define FC_SIZE 8
4595 /**
4596  * i40e_print_link_message - print link up or down
4597  * @vsi: the VSI for which link needs a message
4598  */
4599 static void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
4600 {
4601         char speed[SPEED_SIZE] = "Unknown";
4602         char fc[FC_SIZE] = "RX/TX";
4603
4604         if (!isup) {
4605                 netdev_info(vsi->netdev, "NIC Link is Down\n");
4606                 return;
4607         }
4608
4609         /* Warn user if link speed on NPAR enabled partition is not at
4610          * least 10GB
4611          */
4612         if (vsi->back->hw.func_caps.npar_enable &&
4613             (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
4614              vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
4615                 netdev_warn(vsi->netdev,
4616                             "The partition detected link speed that is less than 10Gbps\n");
4617
4618         switch (vsi->back->hw.phy.link_info.link_speed) {
4619         case I40E_LINK_SPEED_40GB:
4620                 strlcpy(speed, "40 Gbps", SPEED_SIZE);
4621                 break;
4622         case I40E_LINK_SPEED_10GB:
4623                 strlcpy(speed, "10 Gbps", SPEED_SIZE);
4624                 break;
4625         case I40E_LINK_SPEED_1GB:
4626                 strlcpy(speed, "1000 Mbps", SPEED_SIZE);
4627                 break;
4628         case I40E_LINK_SPEED_100MB:
4629                 strncpy(speed, "100 Mbps", SPEED_SIZE);
4630                 break;
4631         default:
4632                 break;
4633         }
4634
4635         switch (vsi->back->hw.fc.current_mode) {
4636         case I40E_FC_FULL:
4637                 strlcpy(fc, "RX/TX", FC_SIZE);
4638                 break;
4639         case I40E_FC_TX_PAUSE:
4640                 strlcpy(fc, "TX", FC_SIZE);
4641                 break;
4642         case I40E_FC_RX_PAUSE:
4643                 strlcpy(fc, "RX", FC_SIZE);
4644                 break;
4645         default:
4646                 strlcpy(fc, "None", FC_SIZE);
4647                 break;
4648         }
4649
4650         netdev_info(vsi->netdev, "NIC Link is Up %s Full Duplex, Flow Control: %s\n",
4651                     speed, fc);
4652 }
4653
4654 /**
4655  * i40e_up_complete - Finish the last steps of bringing up a connection
4656  * @vsi: the VSI being configured
4657  **/
4658 static int i40e_up_complete(struct i40e_vsi *vsi)
4659 {
4660         struct i40e_pf *pf = vsi->back;
4661         int err;
4662
4663         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4664                 i40e_vsi_configure_msix(vsi);
4665         else
4666                 i40e_configure_msi_and_legacy(vsi);
4667
4668         /* start rings */
4669         err = i40e_vsi_control_rings(vsi, true);
4670         if (err)
4671                 return err;
4672
4673         clear_bit(__I40E_DOWN, &vsi->state);
4674         i40e_napi_enable_all(vsi);
4675         i40e_vsi_enable_irq(vsi);
4676
4677         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
4678             (vsi->netdev)) {
4679                 i40e_print_link_message(vsi, true);
4680                 netif_tx_start_all_queues(vsi->netdev);
4681                 netif_carrier_on(vsi->netdev);
4682         } else if (vsi->netdev) {
4683                 i40e_print_link_message(vsi, false);
4684                 /* need to check for qualified module here*/
4685                 if ((pf->hw.phy.link_info.link_info &
4686                         I40E_AQ_MEDIA_AVAILABLE) &&
4687                     (!(pf->hw.phy.link_info.an_info &
4688                         I40E_AQ_QUALIFIED_MODULE)))
4689                         netdev_err(vsi->netdev,
4690                                    "the driver failed to link because an unqualified module was detected.");
4691         }
4692
4693         /* replay FDIR SB filters */
4694         if (vsi->type == I40E_VSI_FDIR) {
4695                 /* reset fd counters */
4696                 pf->fd_add_err = pf->fd_atr_cnt = 0;
4697                 if (pf->fd_tcp_rule > 0) {
4698                         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
4699                         dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
4700                         pf->fd_tcp_rule = 0;
4701                 }
4702                 i40e_fdir_filter_restore(vsi);
4703         }
4704         i40e_service_event_schedule(pf);
4705
4706         return 0;
4707 }
4708
4709 /**
4710  * i40e_vsi_reinit_locked - Reset the VSI
4711  * @vsi: the VSI being configured
4712  *
4713  * Rebuild the ring structs after some configuration
4714  * has changed, e.g. MTU size.
4715  **/
4716 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
4717 {
4718         struct i40e_pf *pf = vsi->back;
4719
4720         WARN_ON(in_interrupt());
4721         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
4722                 usleep_range(1000, 2000);
4723         i40e_down(vsi);
4724
4725         /* Give a VF some time to respond to the reset.  The
4726          * two second wait is based upon the watchdog cycle in
4727          * the VF driver.
4728          */
4729         if (vsi->type == I40E_VSI_SRIOV)
4730                 msleep(2000);
4731         i40e_up(vsi);
4732         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
4733 }
4734
4735 /**
4736  * i40e_up - Bring the connection back up after being down
4737  * @vsi: the VSI being configured
4738  **/
4739 int i40e_up(struct i40e_vsi *vsi)
4740 {
4741         int err;
4742
4743         err = i40e_vsi_configure(vsi);
4744         if (!err)
4745                 err = i40e_up_complete(vsi);
4746
4747         return err;
4748 }
4749
4750 /**
4751  * i40e_down - Shutdown the connection processing
4752  * @vsi: the VSI being stopped
4753  **/
4754 void i40e_down(struct i40e_vsi *vsi)
4755 {
4756         int i;
4757
4758         /* It is assumed that the caller of this function
4759          * sets the vsi->state __I40E_DOWN bit.
4760          */
4761         if (vsi->netdev) {
4762                 netif_carrier_off(vsi->netdev);
4763                 netif_tx_disable(vsi->netdev);
4764         }
4765         i40e_vsi_disable_irq(vsi);
4766         i40e_vsi_control_rings(vsi, false);
4767         i40e_napi_disable_all(vsi);
4768
4769         for (i = 0; i < vsi->num_queue_pairs; i++) {
4770                 i40e_clean_tx_ring(vsi->tx_rings[i]);
4771                 i40e_clean_rx_ring(vsi->rx_rings[i]);
4772         }
4773 }
4774
4775 /**
4776  * i40e_setup_tc - configure multiple traffic classes
4777  * @netdev: net device to configure
4778  * @tc: number of traffic classes to enable
4779  **/
4780 #ifdef I40E_FCOE
4781 int i40e_setup_tc(struct net_device *netdev, u8 tc)
4782 #else
4783 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
4784 #endif
4785 {
4786         struct i40e_netdev_priv *np = netdev_priv(netdev);
4787         struct i40e_vsi *vsi = np->vsi;
4788         struct i40e_pf *pf = vsi->back;
4789         u8 enabled_tc = 0;
4790         int ret = -EINVAL;
4791         int i;
4792
4793         /* Check if DCB enabled to continue */
4794         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
4795                 netdev_info(netdev, "DCB is not enabled for adapter\n");
4796                 goto exit;
4797         }
4798
4799         /* Check if MFP enabled */
4800         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
4801                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
4802                 goto exit;
4803         }
4804
4805         /* Check whether tc count is within enabled limit */
4806         if (tc > i40e_pf_get_num_tc(pf)) {
4807                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
4808                 goto exit;
4809         }
4810
4811         /* Generate TC map for number of tc requested */
4812         for (i = 0; i < tc; i++)
4813                 enabled_tc |= (1 << i);
4814
4815         /* Requesting same TC configuration as already enabled */
4816         if (enabled_tc == vsi->tc_config.enabled_tc)
4817                 return 0;
4818
4819         /* Quiesce VSI queues */
4820         i40e_quiesce_vsi(vsi);
4821
4822         /* Configure VSI for enabled TCs */
4823         ret = i40e_vsi_config_tc(vsi, enabled_tc);
4824         if (ret) {
4825                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
4826                             vsi->seid);
4827                 goto exit;
4828         }
4829
4830         /* Unquiesce VSI */
4831         i40e_unquiesce_vsi(vsi);
4832
4833 exit:
4834         return ret;
4835 }
4836
4837 /**
4838  * i40e_open - Called when a network interface is made active
4839  * @netdev: network interface device structure
4840  *
4841  * The open entry point is called when a network interface is made
4842  * active by the system (IFF_UP).  At this point all resources needed
4843  * for transmit and receive operations are allocated, the interrupt
4844  * handler is registered with the OS, the netdev watchdog subtask is
4845  * enabled, and the stack is notified that the interface is ready.
4846  *
4847  * Returns 0 on success, negative value on failure
4848  **/
4849 int i40e_open(struct net_device *netdev)
4850 {
4851         struct i40e_netdev_priv *np = netdev_priv(netdev);
4852         struct i40e_vsi *vsi = np->vsi;
4853         struct i40e_pf *pf = vsi->back;
4854         int err;
4855
4856         /* disallow open during test or if eeprom is broken */
4857         if (test_bit(__I40E_TESTING, &pf->state) ||
4858             test_bit(__I40E_BAD_EEPROM, &pf->state))
4859                 return -EBUSY;
4860
4861         netif_carrier_off(netdev);
4862
4863         err = i40e_vsi_open(vsi);
4864         if (err)
4865                 return err;
4866
4867         /* configure global TSO hardware offload settings */
4868         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
4869                                                        TCP_FLAG_FIN) >> 16);
4870         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
4871                                                        TCP_FLAG_FIN |
4872                                                        TCP_FLAG_CWR) >> 16);
4873         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
4874
4875 #ifdef CONFIG_I40E_VXLAN
4876         vxlan_get_rx_port(netdev);
4877 #endif
4878
4879         return 0;
4880 }
4881
4882 /**
4883  * i40e_vsi_open -
4884  * @vsi: the VSI to open
4885  *
4886  * Finish initialization of the VSI.
4887  *
4888  * Returns 0 on success, negative value on failure
4889  **/
4890 int i40e_vsi_open(struct i40e_vsi *vsi)
4891 {
4892         struct i40e_pf *pf = vsi->back;
4893         char int_name[I40E_INT_NAME_STR_LEN];
4894         int err;
4895
4896         /* allocate descriptors */
4897         err = i40e_vsi_setup_tx_resources(vsi);
4898         if (err)
4899                 goto err_setup_tx;
4900         err = i40e_vsi_setup_rx_resources(vsi);
4901         if (err)
4902                 goto err_setup_rx;
4903
4904         err = i40e_vsi_configure(vsi);
4905         if (err)
4906                 goto err_setup_rx;
4907
4908         if (vsi->netdev) {
4909                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
4910                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
4911                 err = i40e_vsi_request_irq(vsi, int_name);
4912                 if (err)
4913                         goto err_setup_rx;
4914
4915                 /* Notify the stack of the actual queue counts. */
4916                 err = netif_set_real_num_tx_queues(vsi->netdev,
4917                                                    vsi->num_queue_pairs);
4918                 if (err)
4919                         goto err_set_queues;
4920
4921                 err = netif_set_real_num_rx_queues(vsi->netdev,
4922                                                    vsi->num_queue_pairs);
4923                 if (err)
4924                         goto err_set_queues;
4925
4926         } else if (vsi->type == I40E_VSI_FDIR) {
4927                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
4928                          dev_driver_string(&pf->pdev->dev),
4929                          dev_name(&pf->pdev->dev));
4930                 err = i40e_vsi_request_irq(vsi, int_name);
4931
4932         } else {
4933                 err = -EINVAL;
4934                 goto err_setup_rx;
4935         }
4936
4937         err = i40e_up_complete(vsi);
4938         if (err)
4939                 goto err_up_complete;
4940
4941         return 0;
4942
4943 err_up_complete:
4944         i40e_down(vsi);
4945 err_set_queues:
4946         i40e_vsi_free_irq(vsi);
4947 err_setup_rx:
4948         i40e_vsi_free_rx_resources(vsi);
4949 err_setup_tx:
4950         i40e_vsi_free_tx_resources(vsi);
4951         if (vsi == pf->vsi[pf->lan_vsi])
4952                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
4953
4954         return err;
4955 }
4956
4957 /**
4958  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
4959  * @pf: Pointer to pf
4960  *
4961  * This function destroys the hlist where all the Flow Director
4962  * filters were saved.
4963  **/
4964 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
4965 {
4966         struct i40e_fdir_filter *filter;
4967         struct hlist_node *node2;
4968
4969         hlist_for_each_entry_safe(filter, node2,
4970                                   &pf->fdir_filter_list, fdir_node) {
4971                 hlist_del(&filter->fdir_node);
4972                 kfree(filter);
4973         }
4974         pf->fdir_pf_active_filters = 0;
4975 }
4976
4977 /**
4978  * i40e_close - Disables a network interface
4979  * @netdev: network interface device structure
4980  *
4981  * The close entry point is called when an interface is de-activated
4982  * by the OS.  The hardware is still under the driver's control, but
4983  * this netdev interface is disabled.
4984  *
4985  * Returns 0, this is not allowed to fail
4986  **/
4987 #ifdef I40E_FCOE
4988 int i40e_close(struct net_device *netdev)
4989 #else
4990 static int i40e_close(struct net_device *netdev)
4991 #endif
4992 {
4993         struct i40e_netdev_priv *np = netdev_priv(netdev);
4994         struct i40e_vsi *vsi = np->vsi;
4995
4996         i40e_vsi_close(vsi);
4997
4998         return 0;
4999 }
5000
5001 /**
5002  * i40e_do_reset - Start a PF or Core Reset sequence
5003  * @pf: board private structure
5004  * @reset_flags: which reset is requested
5005  *
5006  * The essential difference in resets is that the PF Reset
5007  * doesn't clear the packet buffers, doesn't reset the PE
5008  * firmware, and doesn't bother the other PFs on the chip.
5009  **/
5010 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
5011 {
5012         u32 val;
5013
5014         WARN_ON(in_interrupt());
5015
5016         if (i40e_check_asq_alive(&pf->hw))
5017                 i40e_vc_notify_reset(pf);
5018
5019         /* do the biggest reset indicated */
5020         if (reset_flags & (1 << __I40E_GLOBAL_RESET_REQUESTED)) {
5021
5022                 /* Request a Global Reset
5023                  *
5024                  * This will start the chip's countdown to the actual full
5025                  * chip reset event, and a warning interrupt to be sent
5026                  * to all PFs, including the requestor.  Our handler
5027                  * for the warning interrupt will deal with the shutdown
5028                  * and recovery of the switch setup.
5029                  */
5030                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
5031                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5032                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
5033                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5034
5035         } else if (reset_flags & (1 << __I40E_CORE_RESET_REQUESTED)) {
5036
5037                 /* Request a Core Reset
5038                  *
5039                  * Same as Global Reset, except does *not* include the MAC/PHY
5040                  */
5041                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
5042                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5043                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
5044                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5045                 i40e_flush(&pf->hw);
5046
5047         } else if (reset_flags & (1 << __I40E_PF_RESET_REQUESTED)) {
5048
5049                 /* Request a PF Reset
5050                  *
5051                  * Resets only the PF-specific registers
5052                  *
5053                  * This goes directly to the tear-down and rebuild of
5054                  * the switch, since we need to do all the recovery as
5055                  * for the Core Reset.
5056                  */
5057                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5058                 i40e_handle_reset_warning(pf);
5059
5060         } else if (reset_flags & (1 << __I40E_REINIT_REQUESTED)) {
5061                 int v;
5062
5063                 /* Find the VSI(s) that requested a re-init */
5064                 dev_info(&pf->pdev->dev,
5065                          "VSI reinit requested\n");
5066                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5067                         struct i40e_vsi *vsi = pf->vsi[v];
5068                         if (vsi != NULL &&
5069                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5070                                 i40e_vsi_reinit_locked(pf->vsi[v]);
5071                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5072                         }
5073                 }
5074
5075                 /* no further action needed, so return now */
5076                 return;
5077         } else if (reset_flags & (1 << __I40E_DOWN_REQUESTED)) {
5078                 int v;
5079
5080                 /* Find the VSI(s) that needs to be brought down */
5081                 dev_info(&pf->pdev->dev, "VSI down requested\n");
5082                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5083                         struct i40e_vsi *vsi = pf->vsi[v];
5084                         if (vsi != NULL &&
5085                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5086                                 set_bit(__I40E_DOWN, &vsi->state);
5087                                 i40e_down(vsi);
5088                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5089                         }
5090                 }
5091
5092                 /* no further action needed, so return now */
5093                 return;
5094         } else {
5095                 dev_info(&pf->pdev->dev,
5096                          "bad reset request 0x%08x\n", reset_flags);
5097                 return;
5098         }
5099 }
5100
5101 #ifdef CONFIG_I40E_DCB
5102 /**
5103  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
5104  * @pf: board private structure
5105  * @old_cfg: current DCB config
5106  * @new_cfg: new DCB config
5107  **/
5108 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
5109                             struct i40e_dcbx_config *old_cfg,
5110                             struct i40e_dcbx_config *new_cfg)
5111 {
5112         bool need_reconfig = false;
5113
5114         /* Check if ETS configuration has changed */
5115         if (memcmp(&new_cfg->etscfg,
5116                    &old_cfg->etscfg,
5117                    sizeof(new_cfg->etscfg))) {
5118                 /* If Priority Table has changed reconfig is needed */
5119                 if (memcmp(&new_cfg->etscfg.prioritytable,
5120                            &old_cfg->etscfg.prioritytable,
5121                            sizeof(new_cfg->etscfg.prioritytable))) {
5122                         need_reconfig = true;
5123                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
5124                 }
5125
5126                 if (memcmp(&new_cfg->etscfg.tcbwtable,
5127                            &old_cfg->etscfg.tcbwtable,
5128                            sizeof(new_cfg->etscfg.tcbwtable)))
5129                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5130
5131                 if (memcmp(&new_cfg->etscfg.tsatable,
5132                            &old_cfg->etscfg.tsatable,
5133                            sizeof(new_cfg->etscfg.tsatable)))
5134                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5135         }
5136
5137         /* Check if PFC configuration has changed */
5138         if (memcmp(&new_cfg->pfc,
5139                    &old_cfg->pfc,
5140                    sizeof(new_cfg->pfc))) {
5141                 need_reconfig = true;
5142                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5143         }
5144
5145         /* Check if APP Table has changed */
5146         if (memcmp(&new_cfg->app,
5147                    &old_cfg->app,
5148                    sizeof(new_cfg->app))) {
5149                 need_reconfig = true;
5150                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5151         }
5152
5153         dev_dbg(&pf->pdev->dev, "%s: need_reconfig=%d\n", __func__,
5154                 need_reconfig);
5155         return need_reconfig;
5156 }
5157
5158 /**
5159  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5160  * @pf: board private structure
5161  * @e: event info posted on ARQ
5162  **/
5163 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5164                                   struct i40e_arq_event_info *e)
5165 {
5166         struct i40e_aqc_lldp_get_mib *mib =
5167                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5168         struct i40e_hw *hw = &pf->hw;
5169         struct i40e_dcbx_config tmp_dcbx_cfg;
5170         bool need_reconfig = false;
5171         int ret = 0;
5172         u8 type;
5173
5174         /* Not DCB capable or capability disabled */
5175         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5176                 return ret;
5177
5178         /* Ignore if event is not for Nearest Bridge */
5179         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5180                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5181         dev_dbg(&pf->pdev->dev,
5182                 "%s: LLDP event mib bridge type 0x%x\n", __func__, type);
5183         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5184                 return ret;
5185
5186         /* Check MIB Type and return if event for Remote MIB update */
5187         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5188         dev_dbg(&pf->pdev->dev,
5189                 "%s: LLDP event mib type %s\n", __func__,
5190                 type ? "remote" : "local");
5191         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5192                 /* Update the remote cached instance and return */
5193                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5194                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5195                                 &hw->remote_dcbx_config);
5196                 goto exit;
5197         }
5198
5199         memset(&tmp_dcbx_cfg, 0, sizeof(tmp_dcbx_cfg));
5200         /* Store the old configuration */
5201         memcpy(&tmp_dcbx_cfg, &hw->local_dcbx_config, sizeof(tmp_dcbx_cfg));
5202
5203         /* Reset the old DCBx configuration data */
5204         memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
5205         /* Get updated DCBX data from firmware */
5206         ret = i40e_get_dcb_config(&pf->hw);
5207         if (ret) {
5208                 dev_info(&pf->pdev->dev, "Failed querying DCB configuration data from firmware.\n");
5209                 goto exit;
5210         }
5211
5212         /* No change detected in DCBX configs */
5213         if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
5214                     sizeof(tmp_dcbx_cfg))) {
5215                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5216                 goto exit;
5217         }
5218
5219         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
5220                                                &hw->local_dcbx_config);
5221
5222         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
5223
5224         if (!need_reconfig)
5225                 goto exit;
5226
5227         /* Enable DCB tagging only when more than one TC */
5228         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5229                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5230         else
5231                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5232
5233         set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5234         /* Reconfiguration needed quiesce all VSIs */
5235         i40e_pf_quiesce_all_vsi(pf);
5236
5237         /* Changes in configuration update VEB/VSI */
5238         i40e_dcb_reconfigure(pf);
5239
5240         ret = i40e_resume_port_tx(pf);
5241
5242         clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5243         /* In case of error no point in resuming VSIs */
5244         if (ret)
5245                 goto exit;
5246
5247         /* Wait for the PF's Tx queues to be disabled */
5248         ret = i40e_pf_wait_txq_disabled(pf);
5249         if (!ret)
5250                 i40e_pf_unquiesce_all_vsi(pf);
5251 exit:
5252         return ret;
5253 }
5254 #endif /* CONFIG_I40E_DCB */
5255
5256 /**
5257  * i40e_do_reset_safe - Protected reset path for userland calls.
5258  * @pf: board private structure
5259  * @reset_flags: which reset is requested
5260  *
5261  **/
5262 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5263 {
5264         rtnl_lock();
5265         i40e_do_reset(pf, reset_flags);
5266         rtnl_unlock();
5267 }
5268
5269 /**
5270  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5271  * @pf: board private structure
5272  * @e: event info posted on ARQ
5273  *
5274  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5275  * and VF queues
5276  **/
5277 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5278                                            struct i40e_arq_event_info *e)
5279 {
5280         struct i40e_aqc_lan_overflow *data =
5281                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5282         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5283         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5284         struct i40e_hw *hw = &pf->hw;
5285         struct i40e_vf *vf;
5286         u16 vf_id;
5287
5288         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5289                 queue, qtx_ctl);
5290
5291         /* Queue belongs to VF, find the VF and issue VF reset */
5292         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5293             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5294                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5295                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5296                 vf_id -= hw->func_caps.vf_base_id;
5297                 vf = &pf->vf[vf_id];
5298                 i40e_vc_notify_vf_reset(vf);
5299                 /* Allow VF to process pending reset notification */
5300                 msleep(20);
5301                 i40e_reset_vf(vf, false);
5302         }
5303 }
5304
5305 /**
5306  * i40e_service_event_complete - Finish up the service event
5307  * @pf: board private structure
5308  **/
5309 static void i40e_service_event_complete(struct i40e_pf *pf)
5310 {
5311         BUG_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5312
5313         /* flush memory to make sure state is correct before next watchog */
5314         smp_mb__before_atomic();
5315         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5316 }
5317
5318 /**
5319  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5320  * @pf: board private structure
5321  **/
5322 int i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5323 {
5324         int val, fcnt_prog;
5325
5326         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5327         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5328         return fcnt_prog;
5329 }
5330
5331 /**
5332  * i40e_get_current_fd_count - Get the count of total FD filters programmed
5333  * @pf: board private structure
5334  **/
5335 int i40e_get_current_fd_count(struct i40e_pf *pf)
5336 {
5337         int val, fcnt_prog;
5338         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5339         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5340                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5341                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5342         return fcnt_prog;
5343 }
5344
5345 /**
5346  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5347  * @pf: board private structure
5348  **/
5349 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5350 {
5351         u32 fcnt_prog, fcnt_avail;
5352
5353         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5354                 return;
5355
5356         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5357          * to re-enable
5358          */
5359         fcnt_prog = i40e_get_cur_guaranteed_fd_count(pf);
5360         fcnt_avail = pf->fdir_pf_filter_count;
5361         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5362             (pf->fd_add_err == 0) ||
5363             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5364                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5365                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5366                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5367                         dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5368                 }
5369         }
5370         /* Wait for some more space to be available to turn on ATR */
5371         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5372                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5373                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5374                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5375                         dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
5376                 }
5377         }
5378 }
5379
5380 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5381 /**
5382  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5383  * @pf: board private structure
5384  **/
5385 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5386 {
5387         int flush_wait_retry = 50;
5388         int reg;
5389
5390         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5391                 return;
5392
5393         if (time_after(jiffies, pf->fd_flush_timestamp +
5394                                 (I40E_MIN_FD_FLUSH_INTERVAL * HZ))) {
5395                 set_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5396                 pf->fd_flush_timestamp = jiffies;
5397                 pf->auto_disable_flags |= I40E_FLAG_FD_SB_ENABLED;
5398                 pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5399                 /* flush all filters */
5400                 wr32(&pf->hw, I40E_PFQF_CTL_1,
5401                      I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
5402                 i40e_flush(&pf->hw);
5403                 pf->fd_flush_cnt++;
5404                 pf->fd_add_err = 0;
5405                 do {
5406                         /* Check FD flush status every 5-6msec */
5407                         usleep_range(5000, 6000);
5408                         reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
5409                         if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
5410                                 break;
5411                 } while (flush_wait_retry--);
5412                 if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
5413                         dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
5414                 } else {
5415                         /* replay sideband filters */
5416                         i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
5417
5418                         pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
5419                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5420                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5421                         clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5422                         dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
5423                 }
5424         }
5425 }
5426
5427 /**
5428  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
5429  * @pf: board private structure
5430  **/
5431 int i40e_get_current_atr_cnt(struct i40e_pf *pf)
5432 {
5433         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
5434 }
5435
5436 /* We can see up to 256 filter programming desc in transit if the filters are
5437  * being applied really fast; before we see the first
5438  * filter miss error on Rx queue 0. Accumulating enough error messages before
5439  * reacting will make sure we don't cause flush too often.
5440  */
5441 #define I40E_MAX_FD_PROGRAM_ERROR 256
5442
5443 /**
5444  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
5445  * @pf: board private structure
5446  **/
5447 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
5448 {
5449
5450         /* if interface is down do nothing */
5451         if (test_bit(__I40E_DOWN, &pf->state))
5452                 return;
5453
5454         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5455                 return;
5456
5457         if ((pf->fd_add_err >= I40E_MAX_FD_PROGRAM_ERROR) &&
5458             (i40e_get_current_atr_cnt(pf) >= pf->fd_atr_cnt) &&
5459             (i40e_get_current_atr_cnt(pf) > pf->fdir_pf_filter_count))
5460                 i40e_fdir_flush_and_replay(pf);
5461
5462         i40e_fdir_check_and_reenable(pf);
5463
5464 }
5465
5466 /**
5467  * i40e_vsi_link_event - notify VSI of a link event
5468  * @vsi: vsi to be notified
5469  * @link_up: link up or down
5470  **/
5471 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
5472 {
5473         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
5474                 return;
5475
5476         switch (vsi->type) {
5477         case I40E_VSI_MAIN:
5478 #ifdef I40E_FCOE
5479         case I40E_VSI_FCOE:
5480 #endif
5481                 if (!vsi->netdev || !vsi->netdev_registered)
5482                         break;
5483
5484                 if (link_up) {
5485                         netif_carrier_on(vsi->netdev);
5486                         netif_tx_wake_all_queues(vsi->netdev);
5487                 } else {
5488                         netif_carrier_off(vsi->netdev);
5489                         netif_tx_stop_all_queues(vsi->netdev);
5490                 }
5491                 break;
5492
5493         case I40E_VSI_SRIOV:
5494         case I40E_VSI_VMDQ2:
5495         case I40E_VSI_CTRL:
5496         case I40E_VSI_MIRROR:
5497         default:
5498                 /* there is no notification for other VSIs */
5499                 break;
5500         }
5501 }
5502
5503 /**
5504  * i40e_veb_link_event - notify elements on the veb of a link event
5505  * @veb: veb to be notified
5506  * @link_up: link up or down
5507  **/
5508 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
5509 {
5510         struct i40e_pf *pf;
5511         int i;
5512
5513         if (!veb || !veb->pf)
5514                 return;
5515         pf = veb->pf;
5516
5517         /* depth first... */
5518         for (i = 0; i < I40E_MAX_VEB; i++)
5519                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
5520                         i40e_veb_link_event(pf->veb[i], link_up);
5521
5522         /* ... now the local VSIs */
5523         for (i = 0; i < pf->num_alloc_vsi; i++)
5524                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
5525                         i40e_vsi_link_event(pf->vsi[i], link_up);
5526 }
5527
5528 /**
5529  * i40e_link_event - Update netif_carrier status
5530  * @pf: board private structure
5531  **/
5532 static void i40e_link_event(struct i40e_pf *pf)
5533 {
5534         bool new_link, old_link;
5535         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
5536         u8 new_link_speed, old_link_speed;
5537
5538         /* set this to force the get_link_status call to refresh state */
5539         pf->hw.phy.get_link_info = true;
5540
5541         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
5542         new_link = i40e_get_link_status(&pf->hw);
5543         old_link_speed = pf->hw.phy.link_info_old.link_speed;
5544         new_link_speed = pf->hw.phy.link_info.link_speed;
5545
5546         if (new_link == old_link &&
5547             new_link_speed == old_link_speed &&
5548             (test_bit(__I40E_DOWN, &vsi->state) ||
5549              new_link == netif_carrier_ok(vsi->netdev)))
5550                 return;
5551
5552         if (!test_bit(__I40E_DOWN, &vsi->state))
5553                 i40e_print_link_message(vsi, new_link);
5554
5555         /* Notify the base of the switch tree connected to
5556          * the link.  Floating VEBs are not notified.
5557          */
5558         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
5559                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
5560         else
5561                 i40e_vsi_link_event(vsi, new_link);
5562
5563         if (pf->vf)
5564                 i40e_vc_notify_link_state(pf);
5565
5566         if (pf->flags & I40E_FLAG_PTP)
5567                 i40e_ptp_set_increment(pf);
5568 }
5569
5570 /**
5571  * i40e_check_hang_subtask - Check for hung queues and dropped interrupts
5572  * @pf: board private structure
5573  *
5574  * Set the per-queue flags to request a check for stuck queues in the irq
5575  * clean functions, then force interrupts to be sure the irq clean is called.
5576  **/
5577 static void i40e_check_hang_subtask(struct i40e_pf *pf)
5578 {
5579         int i, v;
5580
5581         /* If we're down or resetting, just bail */
5582         if (test_bit(__I40E_CONFIG_BUSY, &pf->state))
5583                 return;
5584
5585         /* for each VSI/netdev
5586          *     for each Tx queue
5587          *         set the check flag
5588          *     for each q_vector
5589          *         force an interrupt
5590          */
5591         for (v = 0; v < pf->num_alloc_vsi; v++) {
5592                 struct i40e_vsi *vsi = pf->vsi[v];
5593                 int armed = 0;
5594
5595                 if (!pf->vsi[v] ||
5596                     test_bit(__I40E_DOWN, &vsi->state) ||
5597                     (vsi->netdev && !netif_carrier_ok(vsi->netdev)))
5598                         continue;
5599
5600                 for (i = 0; i < vsi->num_queue_pairs; i++) {
5601                         set_check_for_tx_hang(vsi->tx_rings[i]);
5602                         if (test_bit(__I40E_HANG_CHECK_ARMED,
5603                                      &vsi->tx_rings[i]->state))
5604                                 armed++;
5605                 }
5606
5607                 if (armed) {
5608                         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
5609                                 wr32(&vsi->back->hw, I40E_PFINT_DYN_CTL0,
5610                                      (I40E_PFINT_DYN_CTL0_INTENA_MASK |
5611                                       I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK |
5612                                       I40E_PFINT_DYN_CTL0_ITR_INDX_MASK |
5613                                       I40E_PFINT_DYN_CTL0_SW_ITR_INDX_ENA_MASK |
5614                                       I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK));
5615                         } else {
5616                                 u16 vec = vsi->base_vector - 1;
5617                                 u32 val = (I40E_PFINT_DYN_CTLN_INTENA_MASK |
5618                                       I40E_PFINT_DYN_CTLN_SWINT_TRIG_MASK |
5619                                       I40E_PFINT_DYN_CTLN_ITR_INDX_MASK |
5620                                       I40E_PFINT_DYN_CTLN_SW_ITR_INDX_ENA_MASK |
5621                                       I40E_PFINT_DYN_CTLN_SW_ITR_INDX_MASK);
5622                                 for (i = 0; i < vsi->num_q_vectors; i++, vec++)
5623                                         wr32(&vsi->back->hw,
5624                                              I40E_PFINT_DYN_CTLN(vec), val);
5625                         }
5626                         i40e_flush(&vsi->back->hw);
5627                 }
5628         }
5629 }
5630
5631 /**
5632  * i40e_watchdog_subtask - periodic checks not using event driven response
5633  * @pf: board private structure
5634  **/
5635 static void i40e_watchdog_subtask(struct i40e_pf *pf)
5636 {
5637         int i;
5638
5639         /* if interface is down do nothing */
5640         if (test_bit(__I40E_DOWN, &pf->state) ||
5641             test_bit(__I40E_CONFIG_BUSY, &pf->state))
5642                 return;
5643
5644         /* make sure we don't do these things too often */
5645         if (time_before(jiffies, (pf->service_timer_previous +
5646                                   pf->service_timer_period)))
5647                 return;
5648         pf->service_timer_previous = jiffies;
5649
5650         i40e_check_hang_subtask(pf);
5651         i40e_link_event(pf);
5652
5653         /* Update the stats for active netdevs so the network stack
5654          * can look at updated numbers whenever it cares to
5655          */
5656         for (i = 0; i < pf->num_alloc_vsi; i++)
5657                 if (pf->vsi[i] && pf->vsi[i]->netdev)
5658                         i40e_update_stats(pf->vsi[i]);
5659
5660         /* Update the stats for the active switching components */
5661         for (i = 0; i < I40E_MAX_VEB; i++)
5662                 if (pf->veb[i])
5663                         i40e_update_veb_stats(pf->veb[i]);
5664
5665         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
5666 }
5667
5668 /**
5669  * i40e_reset_subtask - Set up for resetting the device and driver
5670  * @pf: board private structure
5671  **/
5672 static void i40e_reset_subtask(struct i40e_pf *pf)
5673 {
5674         u32 reset_flags = 0;
5675
5676         rtnl_lock();
5677         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
5678                 reset_flags |= (1 << __I40E_REINIT_REQUESTED);
5679                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
5680         }
5681         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
5682                 reset_flags |= (1 << __I40E_PF_RESET_REQUESTED);
5683                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5684         }
5685         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
5686                 reset_flags |= (1 << __I40E_CORE_RESET_REQUESTED);
5687                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
5688         }
5689         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
5690                 reset_flags |= (1 << __I40E_GLOBAL_RESET_REQUESTED);
5691                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
5692         }
5693         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
5694                 reset_flags |= (1 << __I40E_DOWN_REQUESTED);
5695                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
5696         }
5697
5698         /* If there's a recovery already waiting, it takes
5699          * precedence before starting a new reset sequence.
5700          */
5701         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
5702                 i40e_handle_reset_warning(pf);
5703                 goto unlock;
5704         }
5705
5706         /* If we're already down or resetting, just bail */
5707         if (reset_flags &&
5708             !test_bit(__I40E_DOWN, &pf->state) &&
5709             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
5710                 i40e_do_reset(pf, reset_flags);
5711
5712 unlock:
5713         rtnl_unlock();
5714 }
5715
5716 /**
5717  * i40e_handle_link_event - Handle link event
5718  * @pf: board private structure
5719  * @e: event info posted on ARQ
5720  **/
5721 static void i40e_handle_link_event(struct i40e_pf *pf,
5722                                    struct i40e_arq_event_info *e)
5723 {
5724         struct i40e_hw *hw = &pf->hw;
5725         struct i40e_aqc_get_link_status *status =
5726                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
5727         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
5728
5729         /* save off old link status information */
5730         memcpy(&pf->hw.phy.link_info_old, hw_link_info,
5731                sizeof(pf->hw.phy.link_info_old));
5732
5733         /* Do a new status request to re-enable LSE reporting
5734          * and load new status information into the hw struct
5735          * This completely ignores any state information
5736          * in the ARQ event info, instead choosing to always
5737          * issue the AQ update link status command.
5738          */
5739         i40e_link_event(pf);
5740
5741         /* check for unqualified module, if link is down */
5742         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
5743             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
5744             (!(status->link_info & I40E_AQ_LINK_UP)))
5745                 dev_err(&pf->pdev->dev,
5746                         "The driver failed to link because an unqualified module was detected.\n");
5747 }
5748
5749 /**
5750  * i40e_clean_adminq_subtask - Clean the AdminQ rings
5751  * @pf: board private structure
5752  **/
5753 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
5754 {
5755         struct i40e_arq_event_info event;
5756         struct i40e_hw *hw = &pf->hw;
5757         u16 pending, i = 0;
5758         i40e_status ret;
5759         u16 opcode;
5760         u32 oldval;
5761         u32 val;
5762
5763         /* Do not run clean AQ when PF reset fails */
5764         if (test_bit(__I40E_RESET_FAILED, &pf->state))
5765                 return;
5766
5767         /* check for error indications */
5768         val = rd32(&pf->hw, pf->hw.aq.arq.len);
5769         oldval = val;
5770         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
5771                 dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
5772                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
5773         }
5774         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
5775                 dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
5776                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
5777         }
5778         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
5779                 dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
5780                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
5781         }
5782         if (oldval != val)
5783                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
5784
5785         val = rd32(&pf->hw, pf->hw.aq.asq.len);
5786         oldval = val;
5787         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
5788                 dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
5789                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
5790         }
5791         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
5792                 dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
5793                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
5794         }
5795         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
5796                 dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
5797                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
5798         }
5799         if (oldval != val)
5800                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
5801
5802         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
5803         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
5804         if (!event.msg_buf)
5805                 return;
5806
5807         do {
5808                 ret = i40e_clean_arq_element(hw, &event, &pending);
5809                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
5810                         break;
5811                 else if (ret) {
5812                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
5813                         break;
5814                 }
5815
5816                 opcode = le16_to_cpu(event.desc.opcode);
5817                 switch (opcode) {
5818
5819                 case i40e_aqc_opc_get_link_status:
5820                         i40e_handle_link_event(pf, &event);
5821                         break;
5822                 case i40e_aqc_opc_send_msg_to_pf:
5823                         ret = i40e_vc_process_vf_msg(pf,
5824                                         le16_to_cpu(event.desc.retval),
5825                                         le32_to_cpu(event.desc.cookie_high),
5826                                         le32_to_cpu(event.desc.cookie_low),
5827                                         event.msg_buf,
5828                                         event.msg_len);
5829                         break;
5830                 case i40e_aqc_opc_lldp_update_mib:
5831                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
5832 #ifdef CONFIG_I40E_DCB
5833                         rtnl_lock();
5834                         ret = i40e_handle_lldp_event(pf, &event);
5835                         rtnl_unlock();
5836 #endif /* CONFIG_I40E_DCB */
5837                         break;
5838                 case i40e_aqc_opc_event_lan_overflow:
5839                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
5840                         i40e_handle_lan_overflow_event(pf, &event);
5841                         break;
5842                 case i40e_aqc_opc_send_msg_to_peer:
5843                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
5844                         break;
5845                 default:
5846                         dev_info(&pf->pdev->dev,
5847                                  "ARQ Error: Unknown event 0x%04x received\n",
5848                                  opcode);
5849                         break;
5850                 }
5851         } while (pending && (i++ < pf->adminq_work_limit));
5852
5853         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
5854         /* re-enable Admin queue interrupt cause */
5855         val = rd32(hw, I40E_PFINT_ICR0_ENA);
5856         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
5857         wr32(hw, I40E_PFINT_ICR0_ENA, val);
5858         i40e_flush(hw);
5859
5860         kfree(event.msg_buf);
5861 }
5862
5863 /**
5864  * i40e_verify_eeprom - make sure eeprom is good to use
5865  * @pf: board private structure
5866  **/
5867 static void i40e_verify_eeprom(struct i40e_pf *pf)
5868 {
5869         int err;
5870
5871         err = i40e_diag_eeprom_test(&pf->hw);
5872         if (err) {
5873                 /* retry in case of garbage read */
5874                 err = i40e_diag_eeprom_test(&pf->hw);
5875                 if (err) {
5876                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
5877                                  err);
5878                         set_bit(__I40E_BAD_EEPROM, &pf->state);
5879                 }
5880         }
5881
5882         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
5883                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
5884                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
5885         }
5886 }
5887
5888 /**
5889  * i40e_config_bridge_mode - Configure the HW bridge mode
5890  * @veb: pointer to the bridge instance
5891  *
5892  * Configure the loop back mode for the LAN VSI that is downlink to the
5893  * specified HW bridge instance. It is expected this function is called
5894  * when a new HW bridge is instantiated.
5895  **/
5896 static void i40e_config_bridge_mode(struct i40e_veb *veb)
5897 {
5898         struct i40e_pf *pf = veb->pf;
5899
5900         dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
5901                  veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
5902         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
5903                 i40e_disable_pf_switch_lb(pf);
5904         else
5905                 i40e_enable_pf_switch_lb(pf);
5906 }
5907
5908 /**
5909  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
5910  * @veb: pointer to the VEB instance
5911  *
5912  * This is a recursive function that first builds the attached VSIs then
5913  * recurses in to build the next layer of VEB.  We track the connections
5914  * through our own index numbers because the seid's from the HW could
5915  * change across the reset.
5916  **/
5917 static int i40e_reconstitute_veb(struct i40e_veb *veb)
5918 {
5919         struct i40e_vsi *ctl_vsi = NULL;
5920         struct i40e_pf *pf = veb->pf;
5921         int v, veb_idx;
5922         int ret;
5923
5924         /* build VSI that owns this VEB, temporarily attached to base VEB */
5925         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
5926                 if (pf->vsi[v] &&
5927                     pf->vsi[v]->veb_idx == veb->idx &&
5928                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
5929                         ctl_vsi = pf->vsi[v];
5930                         break;
5931                 }
5932         }
5933         if (!ctl_vsi) {
5934                 dev_info(&pf->pdev->dev,
5935                          "missing owner VSI for veb_idx %d\n", veb->idx);
5936                 ret = -ENOENT;
5937                 goto end_reconstitute;
5938         }
5939         if (ctl_vsi != pf->vsi[pf->lan_vsi])
5940                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
5941         ret = i40e_add_vsi(ctl_vsi);
5942         if (ret) {
5943                 dev_info(&pf->pdev->dev,
5944                          "rebuild of owner VSI failed: %d\n", ret);
5945                 goto end_reconstitute;
5946         }
5947         i40e_vsi_reset_stats(ctl_vsi);
5948
5949         /* create the VEB in the switch and move the VSI onto the VEB */
5950         ret = i40e_add_veb(veb, ctl_vsi);
5951         if (ret)
5952                 goto end_reconstitute;
5953
5954         i40e_config_bridge_mode(veb);
5955
5956         /* create the remaining VSIs attached to this VEB */
5957         for (v = 0; v < pf->num_alloc_vsi; v++) {
5958                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
5959                         continue;
5960
5961                 if (pf->vsi[v]->veb_idx == veb->idx) {
5962                         struct i40e_vsi *vsi = pf->vsi[v];
5963                         vsi->uplink_seid = veb->seid;
5964                         ret = i40e_add_vsi(vsi);
5965                         if (ret) {
5966                                 dev_info(&pf->pdev->dev,
5967                                          "rebuild of vsi_idx %d failed: %d\n",
5968                                          v, ret);
5969                                 goto end_reconstitute;
5970                         }
5971                         i40e_vsi_reset_stats(vsi);
5972                 }
5973         }
5974
5975         /* create any VEBs attached to this VEB - RECURSION */
5976         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
5977                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
5978                         pf->veb[veb_idx]->uplink_seid = veb->seid;
5979                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
5980                         if (ret)
5981                                 break;
5982                 }
5983         }
5984
5985 end_reconstitute:
5986         return ret;
5987 }
5988
5989 /**
5990  * i40e_get_capabilities - get info about the HW
5991  * @pf: the PF struct
5992  **/
5993 static int i40e_get_capabilities(struct i40e_pf *pf)
5994 {
5995         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
5996         u16 data_size;
5997         int buf_len;
5998         int err;
5999
6000         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
6001         do {
6002                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
6003                 if (!cap_buf)
6004                         return -ENOMEM;
6005
6006                 /* this loads the data into the hw struct for us */
6007                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
6008                                             &data_size,
6009                                             i40e_aqc_opc_list_func_capabilities,
6010                                             NULL);
6011                 /* data loaded, buffer no longer needed */
6012                 kfree(cap_buf);
6013
6014                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
6015                         /* retry with a larger buffer */
6016                         buf_len = data_size;
6017                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
6018                         dev_info(&pf->pdev->dev,
6019                                  "capability discovery failed: aq=%d\n",
6020                                  pf->hw.aq.asq_last_status);
6021                         return -ENODEV;
6022                 }
6023         } while (err);
6024
6025         if (((pf->hw.aq.fw_maj_ver == 2) && (pf->hw.aq.fw_min_ver < 22)) ||
6026             (pf->hw.aq.fw_maj_ver < 2)) {
6027                 pf->hw.func_caps.num_msix_vectors++;
6028                 pf->hw.func_caps.num_msix_vectors_vf++;
6029         }
6030
6031         if (pf->hw.debug_mask & I40E_DEBUG_USER)
6032                 dev_info(&pf->pdev->dev,
6033                          "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",
6034                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6035                          pf->hw.func_caps.num_msix_vectors,
6036                          pf->hw.func_caps.num_msix_vectors_vf,
6037                          pf->hw.func_caps.fd_filters_guaranteed,
6038                          pf->hw.func_caps.fd_filters_best_effort,
6039                          pf->hw.func_caps.num_tx_qp,
6040                          pf->hw.func_caps.num_vsis);
6041
6042 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6043                        + pf->hw.func_caps.num_vfs)
6044         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6045                 dev_info(&pf->pdev->dev,
6046                          "got num_vsis %d, setting num_vsis to %d\n",
6047                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6048                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6049         }
6050
6051         return 0;
6052 }
6053
6054 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6055
6056 /**
6057  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6058  * @pf: board private structure
6059  **/
6060 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6061 {
6062         struct i40e_vsi *vsi;
6063         int i;
6064
6065         /* quick workaround for an NVM issue that leaves a critical register
6066          * uninitialized
6067          */
6068         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6069                 static const u32 hkey[] = {
6070                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6071                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6072                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6073                         0x95b3a76d};
6074
6075                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6076                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6077         }
6078
6079         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6080                 return;
6081
6082         /* find existing VSI and see if it needs configuring */
6083         vsi = NULL;
6084         for (i = 0; i < pf->num_alloc_vsi; i++) {
6085                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6086                         vsi = pf->vsi[i];
6087                         break;
6088                 }
6089         }
6090
6091         /* create a new VSI if none exists */
6092         if (!vsi) {
6093                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6094                                      pf->vsi[pf->lan_vsi]->seid, 0);
6095                 if (!vsi) {
6096                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6097                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6098                         return;
6099                 }
6100         }
6101
6102         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6103 }
6104
6105 /**
6106  * i40e_fdir_teardown - release the Flow Director resources
6107  * @pf: board private structure
6108  **/
6109 static void i40e_fdir_teardown(struct i40e_pf *pf)
6110 {
6111         int i;
6112
6113         i40e_fdir_filter_exit(pf);
6114         for (i = 0; i < pf->num_alloc_vsi; i++) {
6115                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6116                         i40e_vsi_release(pf->vsi[i]);
6117                         break;
6118                 }
6119         }
6120 }
6121
6122 /**
6123  * i40e_prep_for_reset - prep for the core to reset
6124  * @pf: board private structure
6125  *
6126  * Close up the VFs and other things in prep for pf Reset.
6127   **/
6128 static void i40e_prep_for_reset(struct i40e_pf *pf)
6129 {
6130         struct i40e_hw *hw = &pf->hw;
6131         i40e_status ret = 0;
6132         u32 v;
6133
6134         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6135         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6136                 return;
6137
6138         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6139
6140         /* quiesce the VSIs and their queues that are not already DOWN */
6141         i40e_pf_quiesce_all_vsi(pf);
6142
6143         for (v = 0; v < pf->num_alloc_vsi; v++) {
6144                 if (pf->vsi[v])
6145                         pf->vsi[v]->seid = 0;
6146         }
6147
6148         i40e_shutdown_adminq(&pf->hw);
6149
6150         /* call shutdown HMC */
6151         if (hw->hmc.hmc_obj) {
6152                 ret = i40e_shutdown_lan_hmc(hw);
6153                 if (ret)
6154                         dev_warn(&pf->pdev->dev,
6155                                  "shutdown_lan_hmc failed: %d\n", ret);
6156         }
6157 }
6158
6159 /**
6160  * i40e_send_version - update firmware with driver version
6161  * @pf: PF struct
6162  */
6163 static void i40e_send_version(struct i40e_pf *pf)
6164 {
6165         struct i40e_driver_version dv;
6166
6167         dv.major_version = DRV_VERSION_MAJOR;
6168         dv.minor_version = DRV_VERSION_MINOR;
6169         dv.build_version = DRV_VERSION_BUILD;
6170         dv.subbuild_version = 0;
6171         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6172         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6173 }
6174
6175 /**
6176  * i40e_reset_and_rebuild - reset and rebuild using a saved config
6177  * @pf: board private structure
6178  * @reinit: if the Main VSI needs to re-initialized.
6179  **/
6180 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
6181 {
6182         struct i40e_hw *hw = &pf->hw;
6183         u8 set_fc_aq_fail = 0;
6184         i40e_status ret;
6185         u32 v;
6186
6187         /* Now we wait for GRST to settle out.
6188          * We don't have to delete the VEBs or VSIs from the hw switch
6189          * because the reset will make them disappear.
6190          */
6191         ret = i40e_pf_reset(hw);
6192         if (ret) {
6193                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6194                 set_bit(__I40E_RESET_FAILED, &pf->state);
6195                 goto clear_recovery;
6196         }
6197         pf->pfr_count++;
6198
6199         if (test_bit(__I40E_DOWN, &pf->state))
6200                 goto clear_recovery;
6201         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6202
6203         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6204         ret = i40e_init_adminq(&pf->hw);
6205         if (ret) {
6206                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, %d\n", ret);
6207                 goto clear_recovery;
6208         }
6209
6210         /* re-verify the eeprom if we just had an EMP reset */
6211         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
6212                 i40e_verify_eeprom(pf);
6213
6214         i40e_clear_pxe_mode(hw);
6215         ret = i40e_get_capabilities(pf);
6216         if (ret) {
6217                 dev_info(&pf->pdev->dev, "i40e_get_capabilities failed, %d\n",
6218                          ret);
6219                 goto end_core_reset;
6220         }
6221
6222         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6223                                 hw->func_caps.num_rx_qp,
6224                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6225         if (ret) {
6226                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6227                 goto end_core_reset;
6228         }
6229         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6230         if (ret) {
6231                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6232                 goto end_core_reset;
6233         }
6234
6235 #ifdef CONFIG_I40E_DCB
6236         ret = i40e_init_pf_dcb(pf);
6237         if (ret) {
6238                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
6239                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
6240                 /* Continue without DCB enabled */
6241         }
6242 #endif /* CONFIG_I40E_DCB */
6243 #ifdef I40E_FCOE
6244         ret = i40e_init_pf_fcoe(pf);
6245         if (ret)
6246                 dev_info(&pf->pdev->dev, "init_pf_fcoe failed: %d\n", ret);
6247
6248 #endif
6249         /* do basic switch setup */
6250         ret = i40e_setup_pf_switch(pf, reinit);
6251         if (ret)
6252                 goto end_core_reset;
6253
6254         /* driver is only interested in link up/down and module qualification
6255          * reports from firmware
6256          */
6257         ret = i40e_aq_set_phy_int_mask(&pf->hw,
6258                                        I40E_AQ_EVENT_LINK_UPDOWN |
6259                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
6260         if (ret)
6261                 dev_info(&pf->pdev->dev, "set phy mask fail, aq_err %d\n", ret);
6262
6263         /* make sure our flow control settings are restored */
6264         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6265         if (ret)
6266                 dev_info(&pf->pdev->dev, "set fc fail, aq_err %d\n", ret);
6267
6268         /* Rebuild the VSIs and VEBs that existed before reset.
6269          * They are still in our local switch element arrays, so only
6270          * need to rebuild the switch model in the HW.
6271          *
6272          * If there were VEBs but the reconstitution failed, we'll try
6273          * try to recover minimal use by getting the basic PF VSI working.
6274          */
6275         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6276                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6277                 /* find the one VEB connected to the MAC, and find orphans */
6278                 for (v = 0; v < I40E_MAX_VEB; v++) {
6279                         if (!pf->veb[v])
6280                                 continue;
6281
6282                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6283                             pf->veb[v]->uplink_seid == 0) {
6284                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6285
6286                                 if (!ret)
6287                                         continue;
6288
6289                                 /* If Main VEB failed, we're in deep doodoo,
6290                                  * so give up rebuilding the switch and set up
6291                                  * for minimal rebuild of PF VSI.
6292                                  * If orphan failed, we'll report the error
6293                                  * but try to keep going.
6294                                  */
6295                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6296                                         dev_info(&pf->pdev->dev,
6297                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6298                                                  ret);
6299                                         pf->vsi[pf->lan_vsi]->uplink_seid
6300                                                                 = pf->mac_seid;
6301                                         break;
6302                                 } else if (pf->veb[v]->uplink_seid == 0) {
6303                                         dev_info(&pf->pdev->dev,
6304                                                  "rebuild of orphan VEB failed: %d\n",
6305                                                  ret);
6306                                 }
6307                         }
6308                 }
6309         }
6310
6311         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6312                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6313                 /* no VEB, so rebuild only the Main VSI */
6314                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6315                 if (ret) {
6316                         dev_info(&pf->pdev->dev,
6317                                  "rebuild of Main VSI failed: %d\n", ret);
6318                         goto end_core_reset;
6319                 }
6320         }
6321
6322         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
6323             (pf->hw.aq.fw_maj_ver < 4)) {
6324                 msleep(75);
6325                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6326                 if (ret)
6327                         dev_info(&pf->pdev->dev, "link restart failed, aq_err=%d\n",
6328                                  pf->hw.aq.asq_last_status);
6329         }
6330         /* reinit the misc interrupt */
6331         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6332                 ret = i40e_setup_misc_vector(pf);
6333
6334         /* restart the VSIs that were rebuilt and running before the reset */
6335         i40e_pf_unquiesce_all_vsi(pf);
6336
6337         if (pf->num_alloc_vfs) {
6338                 for (v = 0; v < pf->num_alloc_vfs; v++)
6339                         i40e_reset_vf(&pf->vf[v], true);
6340         }
6341
6342         /* tell the firmware that we're starting */
6343         i40e_send_version(pf);
6344
6345 end_core_reset:
6346         clear_bit(__I40E_RESET_FAILED, &pf->state);
6347 clear_recovery:
6348         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
6349 }
6350
6351 /**
6352  * i40e_handle_reset_warning - prep for the pf to reset, reset and rebuild
6353  * @pf: board private structure
6354  *
6355  * Close up the VFs and other things in prep for a Core Reset,
6356  * then get ready to rebuild the world.
6357  **/
6358 static void i40e_handle_reset_warning(struct i40e_pf *pf)
6359 {
6360         i40e_prep_for_reset(pf);
6361         i40e_reset_and_rebuild(pf, false);
6362 }
6363
6364 /**
6365  * i40e_handle_mdd_event
6366  * @pf: pointer to the pf structure
6367  *
6368  * Called from the MDD irq handler to identify possibly malicious vfs
6369  **/
6370 static void i40e_handle_mdd_event(struct i40e_pf *pf)
6371 {
6372         struct i40e_hw *hw = &pf->hw;
6373         bool mdd_detected = false;
6374         bool pf_mdd_detected = false;
6375         struct i40e_vf *vf;
6376         u32 reg;
6377         int i;
6378
6379         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
6380                 return;
6381
6382         /* find what triggered the MDD event */
6383         reg = rd32(hw, I40E_GL_MDET_TX);
6384         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
6385                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
6386                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
6387                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
6388                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
6389                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
6390                                 I40E_GL_MDET_TX_EVENT_SHIFT;
6391                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
6392                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
6393                                 pf->hw.func_caps.base_queue;
6394                 if (netif_msg_tx_err(pf))
6395                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d pf number 0x%02x vf number 0x%02x\n",
6396                                  event, queue, pf_num, vf_num);
6397                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
6398                 mdd_detected = true;
6399         }
6400         reg = rd32(hw, I40E_GL_MDET_RX);
6401         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
6402                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
6403                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
6404                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
6405                                 I40E_GL_MDET_RX_EVENT_SHIFT;
6406                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
6407                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
6408                                 pf->hw.func_caps.base_queue;
6409                 if (netif_msg_rx_err(pf))
6410                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
6411                                  event, queue, func);
6412                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
6413                 mdd_detected = true;
6414         }
6415
6416         if (mdd_detected) {
6417                 reg = rd32(hw, I40E_PF_MDET_TX);
6418                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
6419                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
6420                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
6421                         pf_mdd_detected = true;
6422                 }
6423                 reg = rd32(hw, I40E_PF_MDET_RX);
6424                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
6425                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
6426                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
6427                         pf_mdd_detected = true;
6428                 }
6429                 /* Queue belongs to the PF, initiate a reset */
6430                 if (pf_mdd_detected) {
6431                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6432                         i40e_service_event_schedule(pf);
6433                 }
6434         }
6435
6436         /* see if one of the VFs needs its hand slapped */
6437         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
6438                 vf = &(pf->vf[i]);
6439                 reg = rd32(hw, I40E_VP_MDET_TX(i));
6440                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
6441                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
6442                         vf->num_mdd_events++;
6443                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
6444                                  i);
6445                 }
6446
6447                 reg = rd32(hw, I40E_VP_MDET_RX(i));
6448                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
6449                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
6450                         vf->num_mdd_events++;
6451                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
6452                                  i);
6453                 }
6454
6455                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
6456                         dev_info(&pf->pdev->dev,
6457                                  "Too many MDD events on VF %d, disabled\n", i);
6458                         dev_info(&pf->pdev->dev,
6459                                  "Use PF Control I/F to re-enable the VF\n");
6460                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
6461                 }
6462         }
6463
6464         /* re-enable mdd interrupt cause */
6465         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
6466         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
6467         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
6468         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
6469         i40e_flush(hw);
6470 }
6471
6472 #ifdef CONFIG_I40E_VXLAN
6473 /**
6474  * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
6475  * @pf: board private structure
6476  **/
6477 static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
6478 {
6479         struct i40e_hw *hw = &pf->hw;
6480         i40e_status ret;
6481         u8 filter_index;
6482         __be16 port;
6483         int i;
6484
6485         if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
6486                 return;
6487
6488         pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
6489
6490         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
6491                 if (pf->pending_vxlan_bitmap & (1 << i)) {
6492                         pf->pending_vxlan_bitmap &= ~(1 << i);
6493                         port = pf->vxlan_ports[i];
6494                         ret = port ?
6495                               i40e_aq_add_udp_tunnel(hw, ntohs(port),
6496                                                      I40E_AQC_TUNNEL_TYPE_VXLAN,
6497                                                      &filter_index, NULL)
6498                               : i40e_aq_del_udp_tunnel(hw, i, NULL);
6499
6500                         if (ret) {
6501                                 dev_info(&pf->pdev->dev, "Failed to execute AQ command for %s port %d with index %d\n",
6502                                          port ? "adding" : "deleting",
6503                                          ntohs(port), port ? i : i);
6504
6505                                 pf->vxlan_ports[i] = 0;
6506                         } else {
6507                                 dev_info(&pf->pdev->dev, "%s port %d with AQ command with index %d\n",
6508                                          port ? "Added" : "Deleted",
6509                                          ntohs(port), port ? i : filter_index);
6510                         }
6511                 }
6512         }
6513 }
6514
6515 #endif
6516 /**
6517  * i40e_service_task - Run the driver's async subtasks
6518  * @work: pointer to work_struct containing our data
6519  **/
6520 static void i40e_service_task(struct work_struct *work)
6521 {
6522         struct i40e_pf *pf = container_of(work,
6523                                           struct i40e_pf,
6524                                           service_task);
6525         unsigned long start_time = jiffies;
6526
6527         /* don't bother with service tasks if a reset is in progress */
6528         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
6529                 i40e_service_event_complete(pf);
6530                 return;
6531         }
6532
6533         i40e_reset_subtask(pf);
6534         i40e_handle_mdd_event(pf);
6535         i40e_vc_process_vflr_event(pf);
6536         i40e_watchdog_subtask(pf);
6537         i40e_fdir_reinit_subtask(pf);
6538         i40e_sync_filters_subtask(pf);
6539 #ifdef CONFIG_I40E_VXLAN
6540         i40e_sync_vxlan_filters_subtask(pf);
6541 #endif
6542         i40e_clean_adminq_subtask(pf);
6543
6544         i40e_service_event_complete(pf);
6545
6546         /* If the tasks have taken longer than one timer cycle or there
6547          * is more work to be done, reschedule the service task now
6548          * rather than wait for the timer to tick again.
6549          */
6550         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
6551             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
6552             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
6553             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
6554                 i40e_service_event_schedule(pf);
6555 }
6556
6557 /**
6558  * i40e_service_timer - timer callback
6559  * @data: pointer to PF struct
6560  **/
6561 static void i40e_service_timer(unsigned long data)
6562 {
6563         struct i40e_pf *pf = (struct i40e_pf *)data;
6564
6565         mod_timer(&pf->service_timer,
6566                   round_jiffies(jiffies + pf->service_timer_period));
6567         i40e_service_event_schedule(pf);
6568 }
6569
6570 /**
6571  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
6572  * @vsi: the VSI being configured
6573  **/
6574 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
6575 {
6576         struct i40e_pf *pf = vsi->back;
6577
6578         switch (vsi->type) {
6579         case I40E_VSI_MAIN:
6580                 vsi->alloc_queue_pairs = pf->num_lan_qps;
6581                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6582                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6583                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6584                         vsi->num_q_vectors = pf->num_lan_msix;
6585                 else
6586                         vsi->num_q_vectors = 1;
6587
6588                 break;
6589
6590         case I40E_VSI_FDIR:
6591                 vsi->alloc_queue_pairs = 1;
6592                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
6593                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6594                 vsi->num_q_vectors = 1;
6595                 break;
6596
6597         case I40E_VSI_VMDQ2:
6598                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
6599                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6600                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6601                 vsi->num_q_vectors = pf->num_vmdq_msix;
6602                 break;
6603
6604         case I40E_VSI_SRIOV:
6605                 vsi->alloc_queue_pairs = pf->num_vf_qps;
6606                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6607                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6608                 break;
6609
6610 #ifdef I40E_FCOE
6611         case I40E_VSI_FCOE:
6612                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
6613                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6614                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6615                 vsi->num_q_vectors = pf->num_fcoe_msix;
6616                 break;
6617
6618 #endif /* I40E_FCOE */
6619         default:
6620                 WARN_ON(1);
6621                 return -ENODATA;
6622         }
6623
6624         return 0;
6625 }
6626
6627 /**
6628  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
6629  * @type: VSI pointer
6630  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
6631  *
6632  * On error: returns error code (negative)
6633  * On success: returns 0
6634  **/
6635 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
6636 {
6637         int size;
6638         int ret = 0;
6639
6640         /* allocate memory for both Tx and Rx ring pointers */
6641         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
6642         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
6643         if (!vsi->tx_rings)
6644                 return -ENOMEM;
6645         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
6646
6647         if (alloc_qvectors) {
6648                 /* allocate memory for q_vector pointers */
6649                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
6650                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
6651                 if (!vsi->q_vectors) {
6652                         ret = -ENOMEM;
6653                         goto err_vectors;
6654                 }
6655         }
6656         return ret;
6657
6658 err_vectors:
6659         kfree(vsi->tx_rings);
6660         return ret;
6661 }
6662
6663 /**
6664  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
6665  * @pf: board private structure
6666  * @type: type of VSI
6667  *
6668  * On error: returns error code (negative)
6669  * On success: returns vsi index in PF (positive)
6670  **/
6671 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
6672 {
6673         int ret = -ENODEV;
6674         struct i40e_vsi *vsi;
6675         int vsi_idx;
6676         int i;
6677
6678         /* Need to protect the allocation of the VSIs at the PF level */
6679         mutex_lock(&pf->switch_mutex);
6680
6681         /* VSI list may be fragmented if VSI creation/destruction has
6682          * been happening.  We can afford to do a quick scan to look
6683          * for any free VSIs in the list.
6684          *
6685          * find next empty vsi slot, looping back around if necessary
6686          */
6687         i = pf->next_vsi;
6688         while (i < pf->num_alloc_vsi && pf->vsi[i])
6689                 i++;
6690         if (i >= pf->num_alloc_vsi) {
6691                 i = 0;
6692                 while (i < pf->next_vsi && pf->vsi[i])
6693                         i++;
6694         }
6695
6696         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
6697                 vsi_idx = i;             /* Found one! */
6698         } else {
6699                 ret = -ENODEV;
6700                 goto unlock_pf;  /* out of VSI slots! */
6701         }
6702         pf->next_vsi = ++i;
6703
6704         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
6705         if (!vsi) {
6706                 ret = -ENOMEM;
6707                 goto unlock_pf;
6708         }
6709         vsi->type = type;
6710         vsi->back = pf;
6711         set_bit(__I40E_DOWN, &vsi->state);
6712         vsi->flags = 0;
6713         vsi->idx = vsi_idx;
6714         vsi->rx_itr_setting = pf->rx_itr_default;
6715         vsi->tx_itr_setting = pf->tx_itr_default;
6716         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
6717                                 pf->rss_table_size : 64;
6718         vsi->netdev_registered = false;
6719         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
6720         INIT_LIST_HEAD(&vsi->mac_filter_list);
6721         vsi->irqs_ready = false;
6722
6723         ret = i40e_set_num_rings_in_vsi(vsi);
6724         if (ret)
6725                 goto err_rings;
6726
6727         ret = i40e_vsi_alloc_arrays(vsi, true);
6728         if (ret)
6729                 goto err_rings;
6730
6731         /* Setup default MSIX irq handler for VSI */
6732         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
6733
6734         pf->vsi[vsi_idx] = vsi;
6735         ret = vsi_idx;
6736         goto unlock_pf;
6737
6738 err_rings:
6739         pf->next_vsi = i - 1;
6740         kfree(vsi);
6741 unlock_pf:
6742         mutex_unlock(&pf->switch_mutex);
6743         return ret;
6744 }
6745
6746 /**
6747  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
6748  * @type: VSI pointer
6749  * @free_qvectors: a bool to specify if q_vectors need to be freed.
6750  *
6751  * On error: returns error code (negative)
6752  * On success: returns 0
6753  **/
6754 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
6755 {
6756         /* free the ring and vector containers */
6757         if (free_qvectors) {
6758                 kfree(vsi->q_vectors);
6759                 vsi->q_vectors = NULL;
6760         }
6761         kfree(vsi->tx_rings);
6762         vsi->tx_rings = NULL;
6763         vsi->rx_rings = NULL;
6764 }
6765
6766 /**
6767  * i40e_vsi_clear - Deallocate the VSI provided
6768  * @vsi: the VSI being un-configured
6769  **/
6770 static int i40e_vsi_clear(struct i40e_vsi *vsi)
6771 {
6772         struct i40e_pf *pf;
6773
6774         if (!vsi)
6775                 return 0;
6776
6777         if (!vsi->back)
6778                 goto free_vsi;
6779         pf = vsi->back;
6780
6781         mutex_lock(&pf->switch_mutex);
6782         if (!pf->vsi[vsi->idx]) {
6783                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
6784                         vsi->idx, vsi->idx, vsi, vsi->type);
6785                 goto unlock_vsi;
6786         }
6787
6788         if (pf->vsi[vsi->idx] != vsi) {
6789                 dev_err(&pf->pdev->dev,
6790                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
6791                         pf->vsi[vsi->idx]->idx,
6792                         pf->vsi[vsi->idx],
6793                         pf->vsi[vsi->idx]->type,
6794                         vsi->idx, vsi, vsi->type);
6795                 goto unlock_vsi;
6796         }
6797
6798         /* updates the pf for this cleared vsi */
6799         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
6800         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
6801
6802         i40e_vsi_free_arrays(vsi, true);
6803
6804         pf->vsi[vsi->idx] = NULL;
6805         if (vsi->idx < pf->next_vsi)
6806                 pf->next_vsi = vsi->idx;
6807
6808 unlock_vsi:
6809         mutex_unlock(&pf->switch_mutex);
6810 free_vsi:
6811         kfree(vsi);
6812
6813         return 0;
6814 }
6815
6816 /**
6817  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
6818  * @vsi: the VSI being cleaned
6819  **/
6820 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
6821 {
6822         int i;
6823
6824         if (vsi->tx_rings && vsi->tx_rings[0]) {
6825                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
6826                         kfree_rcu(vsi->tx_rings[i], rcu);
6827                         vsi->tx_rings[i] = NULL;
6828                         vsi->rx_rings[i] = NULL;
6829                 }
6830         }
6831 }
6832
6833 /**
6834  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
6835  * @vsi: the VSI being configured
6836  **/
6837 static int i40e_alloc_rings(struct i40e_vsi *vsi)
6838 {
6839         struct i40e_ring *tx_ring, *rx_ring;
6840         struct i40e_pf *pf = vsi->back;
6841         int i;
6842
6843         /* Set basic values in the rings to be used later during open() */
6844         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
6845                 /* allocate space for both Tx and Rx in one shot */
6846                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
6847                 if (!tx_ring)
6848                         goto err_out;
6849
6850                 tx_ring->queue_index = i;
6851                 tx_ring->reg_idx = vsi->base_queue + i;
6852                 tx_ring->ring_active = false;
6853                 tx_ring->vsi = vsi;
6854                 tx_ring->netdev = vsi->netdev;
6855                 tx_ring->dev = &pf->pdev->dev;
6856                 tx_ring->count = vsi->num_desc;
6857                 tx_ring->size = 0;
6858                 tx_ring->dcb_tc = 0;
6859                 vsi->tx_rings[i] = tx_ring;
6860
6861                 rx_ring = &tx_ring[1];
6862                 rx_ring->queue_index = i;
6863                 rx_ring->reg_idx = vsi->base_queue + i;
6864                 rx_ring->ring_active = false;
6865                 rx_ring->vsi = vsi;
6866                 rx_ring->netdev = vsi->netdev;
6867                 rx_ring->dev = &pf->pdev->dev;
6868                 rx_ring->count = vsi->num_desc;
6869                 rx_ring->size = 0;
6870                 rx_ring->dcb_tc = 0;
6871                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
6872                         set_ring_16byte_desc_enabled(rx_ring);
6873                 else
6874                         clear_ring_16byte_desc_enabled(rx_ring);
6875                 vsi->rx_rings[i] = rx_ring;
6876         }
6877
6878         return 0;
6879
6880 err_out:
6881         i40e_vsi_clear_rings(vsi);
6882         return -ENOMEM;
6883 }
6884
6885 /**
6886  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
6887  * @pf: board private structure
6888  * @vectors: the number of MSI-X vectors to request
6889  *
6890  * Returns the number of vectors reserved, or error
6891  **/
6892 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
6893 {
6894         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
6895                                         I40E_MIN_MSIX, vectors);
6896         if (vectors < 0) {
6897                 dev_info(&pf->pdev->dev,
6898                          "MSI-X vector reservation failed: %d\n", vectors);
6899                 vectors = 0;
6900         }
6901
6902         return vectors;
6903 }
6904
6905 /**
6906  * i40e_init_msix - Setup the MSIX capability
6907  * @pf: board private structure
6908  *
6909  * Work with the OS to set up the MSIX vectors needed.
6910  *
6911  * Returns 0 on success, negative on failure
6912  **/
6913 static int i40e_init_msix(struct i40e_pf *pf)
6914 {
6915         i40e_status err = 0;
6916         struct i40e_hw *hw = &pf->hw;
6917         int other_vecs = 0;
6918         int v_budget, i;
6919         int vec;
6920
6921         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
6922                 return -ENODEV;
6923
6924         /* The number of vectors we'll request will be comprised of:
6925          *   - Add 1 for "other" cause for Admin Queue events, etc.
6926          *   - The number of LAN queue pairs
6927          *      - Queues being used for RSS.
6928          *              We don't need as many as max_rss_size vectors.
6929          *              use rss_size instead in the calculation since that
6930          *              is governed by number of cpus in the system.
6931          *      - assumes symmetric Tx/Rx pairing
6932          *   - The number of VMDq pairs
6933 #ifdef I40E_FCOE
6934          *   - The number of FCOE qps.
6935 #endif
6936          * Once we count this up, try the request.
6937          *
6938          * If we can't get what we want, we'll simplify to nearly nothing
6939          * and try again.  If that still fails, we punt.
6940          */
6941         pf->num_lan_msix = min_t(int, num_online_cpus(),
6942                                  hw->func_caps.num_msix_vectors);
6943         pf->num_vmdq_msix = pf->num_vmdq_qps;
6944         other_vecs = 1;
6945         other_vecs += (pf->num_vmdq_vsis * pf->num_vmdq_msix);
6946         if (pf->flags & I40E_FLAG_FD_SB_ENABLED)
6947                 other_vecs++;
6948
6949         /* Scale down if necessary, and the rings will share vectors */
6950         pf->num_lan_msix = min_t(int, pf->num_lan_msix,
6951                         (hw->func_caps.num_msix_vectors - other_vecs));
6952         v_budget = pf->num_lan_msix + other_vecs;
6953
6954 #ifdef I40E_FCOE
6955         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
6956                 pf->num_fcoe_msix = pf->num_fcoe_qps;
6957                 v_budget += pf->num_fcoe_msix;
6958         }
6959 #endif
6960
6961         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
6962                                    GFP_KERNEL);
6963         if (!pf->msix_entries)
6964                 return -ENOMEM;
6965
6966         for (i = 0; i < v_budget; i++)
6967                 pf->msix_entries[i].entry = i;
6968         vec = i40e_reserve_msix_vectors(pf, v_budget);
6969
6970         if (vec != v_budget) {
6971                 /* If we have limited resources, we will start with no vectors
6972                  * for the special features and then allocate vectors to some
6973                  * of these features based on the policy and at the end disable
6974                  * the features that did not get any vectors.
6975                  */
6976 #ifdef I40E_FCOE
6977                 pf->num_fcoe_qps = 0;
6978                 pf->num_fcoe_msix = 0;
6979 #endif
6980                 pf->num_vmdq_msix = 0;
6981         }
6982
6983         if (vec < I40E_MIN_MSIX) {
6984                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
6985                 kfree(pf->msix_entries);
6986                 pf->msix_entries = NULL;
6987                 return -ENODEV;
6988
6989         } else if (vec == I40E_MIN_MSIX) {
6990                 /* Adjust for minimal MSIX use */
6991                 pf->num_vmdq_vsis = 0;
6992                 pf->num_vmdq_qps = 0;
6993                 pf->num_lan_qps = 1;
6994                 pf->num_lan_msix = 1;
6995
6996         } else if (vec != v_budget) {
6997                 /* reserve the misc vector */
6998                 vec--;
6999
7000                 /* Scale vector usage down */
7001                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
7002                 pf->num_vmdq_vsis = 1;
7003
7004                 /* partition out the remaining vectors */
7005                 switch (vec) {
7006                 case 2:
7007                         pf->num_lan_msix = 1;
7008                         break;
7009                 case 3:
7010 #ifdef I40E_FCOE
7011                         /* give one vector to FCoE */
7012                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7013                                 pf->num_lan_msix = 1;
7014                                 pf->num_fcoe_msix = 1;
7015                         }
7016 #else
7017                         pf->num_lan_msix = 2;
7018 #endif
7019                         break;
7020                 default:
7021 #ifdef I40E_FCOE
7022                         /* give one vector to FCoE */
7023                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7024                                 pf->num_fcoe_msix = 1;
7025                                 vec--;
7026                         }
7027 #endif
7028                         pf->num_lan_msix = min_t(int, (vec / 2),
7029                                                  pf->num_lan_qps);
7030                         pf->num_vmdq_vsis = min_t(int, (vec - pf->num_lan_msix),
7031                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
7032                         break;
7033                 }
7034         }
7035
7036         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7037             (pf->num_vmdq_msix == 0)) {
7038                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
7039                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
7040         }
7041 #ifdef I40E_FCOE
7042
7043         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
7044                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
7045                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
7046         }
7047 #endif
7048         return err;
7049 }
7050
7051 /**
7052  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7053  * @vsi: the VSI being configured
7054  * @v_idx: index of the vector in the vsi struct
7055  *
7056  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
7057  **/
7058 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
7059 {
7060         struct i40e_q_vector *q_vector;
7061
7062         /* allocate q_vector */
7063         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
7064         if (!q_vector)
7065                 return -ENOMEM;
7066
7067         q_vector->vsi = vsi;
7068         q_vector->v_idx = v_idx;
7069         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
7070         if (vsi->netdev)
7071                 netif_napi_add(vsi->netdev, &q_vector->napi,
7072                                i40e_napi_poll, NAPI_POLL_WEIGHT);
7073
7074         q_vector->rx.latency_range = I40E_LOW_LATENCY;
7075         q_vector->tx.latency_range = I40E_LOW_LATENCY;
7076
7077         /* tie q_vector and vsi together */
7078         vsi->q_vectors[v_idx] = q_vector;
7079
7080         return 0;
7081 }
7082
7083 /**
7084  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
7085  * @vsi: the VSI being configured
7086  *
7087  * We allocate one q_vector per queue interrupt.  If allocation fails we
7088  * return -ENOMEM.
7089  **/
7090 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
7091 {
7092         struct i40e_pf *pf = vsi->back;
7093         int v_idx, num_q_vectors;
7094         int err;
7095
7096         /* if not MSIX, give the one vector only to the LAN VSI */
7097         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7098                 num_q_vectors = vsi->num_q_vectors;
7099         else if (vsi == pf->vsi[pf->lan_vsi])
7100                 num_q_vectors = 1;
7101         else
7102                 return -EINVAL;
7103
7104         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
7105                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
7106                 if (err)
7107                         goto err_out;
7108         }
7109
7110         return 0;
7111
7112 err_out:
7113         while (v_idx--)
7114                 i40e_free_q_vector(vsi, v_idx);
7115
7116         return err;
7117 }
7118
7119 /**
7120  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
7121  * @pf: board private structure to initialize
7122  **/
7123 static void i40e_init_interrupt_scheme(struct i40e_pf *pf)
7124 {
7125         int err = 0;
7126
7127         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7128                 err = i40e_init_msix(pf);
7129                 if (err) {
7130                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
7131 #ifdef I40E_FCOE
7132                                        I40E_FLAG_FCOE_ENABLED   |
7133 #endif
7134                                        I40E_FLAG_RSS_ENABLED    |
7135                                        I40E_FLAG_DCB_CAPABLE    |
7136                                        I40E_FLAG_SRIOV_ENABLED  |
7137                                        I40E_FLAG_FD_SB_ENABLED  |
7138                                        I40E_FLAG_FD_ATR_ENABLED |
7139                                        I40E_FLAG_VMDQ_ENABLED);
7140
7141                         /* rework the queue expectations without MSIX */
7142                         i40e_determine_queue_usage(pf);
7143                 }
7144         }
7145
7146         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
7147             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
7148                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
7149                 err = pci_enable_msi(pf->pdev);
7150                 if (err) {
7151                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n", err);
7152                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
7153                 }
7154         }
7155
7156         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
7157                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
7158
7159         /* track first vector for misc interrupts */
7160         err = i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT-1);
7161 }
7162
7163 /**
7164  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
7165  * @pf: board private structure
7166  *
7167  * This sets up the handler for MSIX 0, which is used to manage the
7168  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
7169  * when in MSI or Legacy interrupt mode.
7170  **/
7171 static int i40e_setup_misc_vector(struct i40e_pf *pf)
7172 {
7173         struct i40e_hw *hw = &pf->hw;
7174         int err = 0;
7175
7176         /* Only request the irq if this is the first time through, and
7177          * not when we're rebuilding after a Reset
7178          */
7179         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7180                 err = request_irq(pf->msix_entries[0].vector,
7181                                   i40e_intr, 0, pf->int_name, pf);
7182                 if (err) {
7183                         dev_info(&pf->pdev->dev,
7184                                  "request_irq for %s failed: %d\n",
7185                                  pf->int_name, err);
7186                         return -EFAULT;
7187                 }
7188         }
7189
7190         i40e_enable_misc_int_causes(pf);
7191
7192         /* associate no queues to the misc vector */
7193         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
7194         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
7195
7196         i40e_flush(hw);
7197
7198         i40e_irq_dynamic_enable_icr0(pf);
7199
7200         return err;
7201 }
7202
7203 /**
7204  * i40e_config_rss - Prepare for RSS if used
7205  * @pf: board private structure
7206  **/
7207 static int i40e_config_rss(struct i40e_pf *pf)
7208 {
7209         u32 rss_key[I40E_PFQF_HKEY_MAX_INDEX + 1];
7210         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7211         struct i40e_hw *hw = &pf->hw;
7212         u32 lut = 0;
7213         int i, j;
7214         u64 hena;
7215         u32 reg_val;
7216
7217         netdev_rss_key_fill(rss_key, sizeof(rss_key));
7218         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
7219                 wr32(hw, I40E_PFQF_HKEY(i), rss_key[i]);
7220
7221         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
7222         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
7223                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
7224         hena |= I40E_DEFAULT_RSS_HENA;
7225         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
7226         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
7227
7228         vsi->rss_size = min_t(int, pf->rss_size, vsi->num_queue_pairs);
7229
7230         /* Check capability and Set table size and register per hw expectation*/
7231         reg_val = rd32(hw, I40E_PFQF_CTL_0);
7232         if (hw->func_caps.rss_table_size == 512) {
7233                 reg_val |= I40E_PFQF_CTL_0_HASHLUTSIZE_512;
7234                 pf->rss_table_size = 512;
7235         } else {
7236                 pf->rss_table_size = 128;
7237                 reg_val &= ~I40E_PFQF_CTL_0_HASHLUTSIZE_512;
7238         }
7239         wr32(hw, I40E_PFQF_CTL_0, reg_val);
7240
7241         /* Populate the LUT with max no. of queues in round robin fashion */
7242         for (i = 0, j = 0; i < pf->rss_table_size; i++, j++) {
7243
7244                 /* The assumption is that lan qp count will be the highest
7245                  * qp count for any PF VSI that needs RSS.
7246                  * If multiple VSIs need RSS support, all the qp counts
7247                  * for those VSIs should be a power of 2 for RSS to work.
7248                  * If LAN VSI is the only consumer for RSS then this requirement
7249                  * is not necessary.
7250                  */
7251                 if (j == vsi->rss_size)
7252                         j = 0;
7253                 /* lut = 4-byte sliding window of 4 lut entries */
7254                 lut = (lut << 8) | (j &
7255                          ((0x1 << pf->hw.func_caps.rss_table_entry_width) - 1));
7256                 /* On i = 3, we have 4 entries in lut; write to the register */
7257                 if ((i & 3) == 3)
7258                         wr32(hw, I40E_PFQF_HLUT(i >> 2), lut);
7259         }
7260         i40e_flush(hw);
7261
7262         return 0;
7263 }
7264
7265 /**
7266  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
7267  * @pf: board private structure
7268  * @queue_count: the requested queue count for rss.
7269  *
7270  * returns 0 if rss is not enabled, if enabled returns the final rss queue
7271  * count which may be different from the requested queue count.
7272  **/
7273 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
7274 {
7275         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7276         int new_rss_size;
7277
7278         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
7279                 return 0;
7280
7281         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
7282
7283         if (queue_count != vsi->num_queue_pairs) {
7284                 vsi->req_queue_pairs = queue_count;
7285                 i40e_prep_for_reset(pf);
7286
7287                 pf->rss_size = new_rss_size;
7288
7289                 i40e_reset_and_rebuild(pf, true);
7290                 i40e_config_rss(pf);
7291         }
7292         dev_info(&pf->pdev->dev, "RSS count:  %d\n", pf->rss_size);
7293         return pf->rss_size;
7294 }
7295
7296 /**
7297  * i40e_get_npar_bw_setting - Retrieve BW settings for this PF partition
7298  * @pf: board private structure
7299  **/
7300 i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf)
7301 {
7302         i40e_status status;
7303         bool min_valid, max_valid;
7304         u32 max_bw, min_bw;
7305
7306         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
7307                                            &min_valid, &max_valid);
7308
7309         if (!status) {
7310                 if (min_valid)
7311                         pf->npar_min_bw = min_bw;
7312                 if (max_valid)
7313                         pf->npar_max_bw = max_bw;
7314         }
7315
7316         return status;
7317 }
7318
7319 /**
7320  * i40e_set_npar_bw_setting - Set BW settings for this PF partition
7321  * @pf: board private structure
7322  **/
7323 i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf)
7324 {
7325         struct i40e_aqc_configure_partition_bw_data bw_data;
7326         i40e_status status;
7327
7328         /* Set the valid bit for this pf */
7329         bw_data.pf_valid_bits = cpu_to_le16(1 << pf->hw.pf_id);
7330         bw_data.max_bw[pf->hw.pf_id] = pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK;
7331         bw_data.min_bw[pf->hw.pf_id] = pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK;
7332
7333         /* Set the new bandwidths */
7334         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
7335
7336         return status;
7337 }
7338
7339 /**
7340  * i40e_commit_npar_bw_setting - Commit BW settings for this PF partition
7341  * @pf: board private structure
7342  **/
7343 i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf)
7344 {
7345         /* Commit temporary BW setting to permanent NVM image */
7346         enum i40e_admin_queue_err last_aq_status;
7347         i40e_status ret;
7348         u16 nvm_word;
7349
7350         if (pf->hw.partition_id != 1) {
7351                 dev_info(&pf->pdev->dev,
7352                          "Commit BW only works on partition 1! This is partition %d",
7353                          pf->hw.partition_id);
7354                 ret = I40E_NOT_SUPPORTED;
7355                 goto bw_commit_out;
7356         }
7357
7358         /* Acquire NVM for read access */
7359         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
7360         last_aq_status = pf->hw.aq.asq_last_status;
7361         if (ret) {
7362                 dev_info(&pf->pdev->dev,
7363                          "Cannot acquire NVM for read access, err %d: aq_err %d\n",
7364                          ret, last_aq_status);
7365                 goto bw_commit_out;
7366         }
7367
7368         /* Read word 0x10 of NVM - SW compatibility word 1 */
7369         ret = i40e_aq_read_nvm(&pf->hw,
7370                                I40E_SR_NVM_CONTROL_WORD,
7371                                0x10, sizeof(nvm_word), &nvm_word,
7372                                false, NULL);
7373         /* Save off last admin queue command status before releasing
7374          * the NVM
7375          */
7376         last_aq_status = pf->hw.aq.asq_last_status;
7377         i40e_release_nvm(&pf->hw);
7378         if (ret) {
7379                 dev_info(&pf->pdev->dev, "NVM read error, err %d aq_err %d\n",
7380                          ret, last_aq_status);
7381                 goto bw_commit_out;
7382         }
7383
7384         /* Wait a bit for NVM release to complete */
7385         msleep(50);
7386
7387         /* Acquire NVM for write access */
7388         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
7389         last_aq_status = pf->hw.aq.asq_last_status;
7390         if (ret) {
7391                 dev_info(&pf->pdev->dev,
7392                          "Cannot acquire NVM for write access, err %d: aq_err %d\n",
7393                          ret, last_aq_status);
7394                 goto bw_commit_out;
7395         }
7396         /* Write it back out unchanged to initiate update NVM,
7397          * which will force a write of the shadow (alt) RAM to
7398          * the NVM - thus storing the bandwidth values permanently.
7399          */
7400         ret = i40e_aq_update_nvm(&pf->hw,
7401                                  I40E_SR_NVM_CONTROL_WORD,
7402                                  0x10, sizeof(nvm_word),
7403                                  &nvm_word, true, NULL);
7404         /* Save off last admin queue command status before releasing
7405          * the NVM
7406          */
7407         last_aq_status = pf->hw.aq.asq_last_status;
7408         i40e_release_nvm(&pf->hw);
7409         if (ret)
7410                 dev_info(&pf->pdev->dev,
7411                          "BW settings NOT SAVED, err %d aq_err %d\n",
7412                          ret, last_aq_status);
7413 bw_commit_out:
7414
7415         return ret;
7416 }
7417
7418 /**
7419  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
7420  * @pf: board private structure to initialize
7421  *
7422  * i40e_sw_init initializes the Adapter private data structure.
7423  * Fields are initialized based on PCI device information and
7424  * OS network device settings (MTU size).
7425  **/
7426 static int i40e_sw_init(struct i40e_pf *pf)
7427 {
7428         int err = 0;
7429         int size;
7430
7431         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
7432                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
7433         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
7434         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
7435                 if (I40E_DEBUG_USER & debug)
7436                         pf->hw.debug_mask = debug;
7437                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
7438                                                 I40E_DEFAULT_MSG_ENABLE);
7439         }
7440
7441         /* Set default capability flags */
7442         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
7443                     I40E_FLAG_MSI_ENABLED     |
7444                     I40E_FLAG_MSIX_ENABLED;
7445
7446         if (iommu_present(&pci_bus_type))
7447                 pf->flags |= I40E_FLAG_RX_PS_ENABLED;
7448         else
7449                 pf->flags |= I40E_FLAG_RX_1BUF_ENABLED;
7450
7451         /* Set default ITR */
7452         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
7453         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
7454
7455         /* Depending on PF configurations, it is possible that the RSS
7456          * maximum might end up larger than the available queues
7457          */
7458         pf->rss_size_max = 0x1 << pf->hw.func_caps.rss_table_entry_width;
7459         pf->rss_size = 1;
7460         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
7461         pf->rss_size_max = min_t(int, pf->rss_size_max,
7462                                  pf->hw.func_caps.num_tx_qp);
7463         if (pf->hw.func_caps.rss) {
7464                 pf->flags |= I40E_FLAG_RSS_ENABLED;
7465                 pf->rss_size = min_t(int, pf->rss_size_max, num_online_cpus());
7466         }
7467
7468         /* MFP mode enabled */
7469         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.mfp_mode_1) {
7470                 pf->flags |= I40E_FLAG_MFP_ENABLED;
7471                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
7472                 if (i40e_get_npar_bw_setting(pf))
7473                         dev_warn(&pf->pdev->dev,
7474                                  "Could not get NPAR bw settings\n");
7475                 else
7476                         dev_info(&pf->pdev->dev,
7477                                  "Min BW = %8.8x, Max BW = %8.8x\n",
7478                                  pf->npar_min_bw, pf->npar_max_bw);
7479         }
7480
7481         /* FW/NVM is not yet fixed in this regard */
7482         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
7483             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
7484                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
7485                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
7486                 /* Setup a counter for fd_atr per pf */
7487                 pf->fd_atr_cnt_idx = I40E_FD_ATR_STAT_IDX(pf->hw.pf_id);
7488                 if (!(pf->flags & I40E_FLAG_MFP_ENABLED)) {
7489                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7490                         /* Setup a counter for fd_sb per pf */
7491                         pf->fd_sb_cnt_idx = I40E_FD_SB_STAT_IDX(pf->hw.pf_id);
7492                 } else {
7493                         dev_info(&pf->pdev->dev,
7494                                  "Flow Director Sideband mode Disabled in MFP mode\n");
7495                 }
7496                 pf->fdir_pf_filter_count =
7497                                  pf->hw.func_caps.fd_filters_guaranteed;
7498                 pf->hw.fdir_shared_filter_count =
7499                                  pf->hw.func_caps.fd_filters_best_effort;
7500         }
7501
7502         if (pf->hw.func_caps.vmdq) {
7503                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
7504                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
7505                 pf->num_vmdq_qps = I40E_DEFAULT_QUEUES_PER_VMDQ;
7506         }
7507
7508 #ifdef I40E_FCOE
7509         err = i40e_init_pf_fcoe(pf);
7510         if (err)
7511                 dev_info(&pf->pdev->dev, "init_pf_fcoe failed: %d\n", err);
7512
7513 #endif /* I40E_FCOE */
7514 #ifdef CONFIG_PCI_IOV
7515         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
7516                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
7517                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
7518                 pf->num_req_vfs = min_t(int,
7519                                         pf->hw.func_caps.num_vfs,
7520                                         I40E_MAX_VF_COUNT);
7521         }
7522 #endif /* CONFIG_PCI_IOV */
7523         pf->eeprom_version = 0xDEAD;
7524         pf->lan_veb = I40E_NO_VEB;
7525         pf->lan_vsi = I40E_NO_VSI;
7526
7527         /* set up queue assignment tracking */
7528         size = sizeof(struct i40e_lump_tracking)
7529                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
7530         pf->qp_pile = kzalloc(size, GFP_KERNEL);
7531         if (!pf->qp_pile) {
7532                 err = -ENOMEM;
7533                 goto sw_init_done;
7534         }
7535         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
7536         pf->qp_pile->search_hint = 0;
7537
7538         /* set up vector assignment tracking */
7539         size = sizeof(struct i40e_lump_tracking)
7540                 + (sizeof(u16) * pf->hw.func_caps.num_msix_vectors);
7541         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7542         if (!pf->irq_pile) {
7543                 kfree(pf->qp_pile);
7544                 err = -ENOMEM;
7545                 goto sw_init_done;
7546         }
7547         pf->irq_pile->num_entries = pf->hw.func_caps.num_msix_vectors;
7548         pf->irq_pile->search_hint = 0;
7549
7550         pf->tx_timeout_recovery_level = 1;
7551
7552         mutex_init(&pf->switch_mutex);
7553
7554 sw_init_done:
7555         return err;
7556 }
7557
7558 /**
7559  * i40e_set_ntuple - set the ntuple feature flag and take action
7560  * @pf: board private structure to initialize
7561  * @features: the feature set that the stack is suggesting
7562  *
7563  * returns a bool to indicate if reset needs to happen
7564  **/
7565 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
7566 {
7567         bool need_reset = false;
7568
7569         /* Check if Flow Director n-tuple support was enabled or disabled.  If
7570          * the state changed, we need to reset.
7571          */
7572         if (features & NETIF_F_NTUPLE) {
7573                 /* Enable filters and mark for reset */
7574                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
7575                         need_reset = true;
7576                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7577         } else {
7578                 /* turn off filters, mark for reset and clear SW filter list */
7579                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7580                         need_reset = true;
7581                         i40e_fdir_filter_exit(pf);
7582                 }
7583                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7584                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
7585                 /* reset fd counters */
7586                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
7587                 pf->fdir_pf_active_filters = 0;
7588                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
7589                 dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
7590                 /* if ATR was auto disabled it can be re-enabled. */
7591                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
7592                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
7593                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
7594         }
7595         return need_reset;
7596 }
7597
7598 /**
7599  * i40e_set_features - set the netdev feature flags
7600  * @netdev: ptr to the netdev being adjusted
7601  * @features: the feature set that the stack is suggesting
7602  **/
7603 static int i40e_set_features(struct net_device *netdev,
7604                              netdev_features_t features)
7605 {
7606         struct i40e_netdev_priv *np = netdev_priv(netdev);
7607         struct i40e_vsi *vsi = np->vsi;
7608         struct i40e_pf *pf = vsi->back;
7609         bool need_reset;
7610
7611         if (features & NETIF_F_HW_VLAN_CTAG_RX)
7612                 i40e_vlan_stripping_enable(vsi);
7613         else
7614                 i40e_vlan_stripping_disable(vsi);
7615
7616         need_reset = i40e_set_ntuple(pf, features);
7617
7618         if (need_reset)
7619                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
7620
7621         return 0;
7622 }
7623
7624 #ifdef CONFIG_I40E_VXLAN
7625 /**
7626  * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
7627  * @pf: board private structure
7628  * @port: The UDP port to look up
7629  *
7630  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
7631  **/
7632 static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
7633 {
7634         u8 i;
7635
7636         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
7637                 if (pf->vxlan_ports[i] == port)
7638                         return i;
7639         }
7640
7641         return i;
7642 }
7643
7644 /**
7645  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
7646  * @netdev: This physical port's netdev
7647  * @sa_family: Socket Family that VXLAN is notifying us about
7648  * @port: New UDP port number that VXLAN started listening to
7649  **/
7650 static void i40e_add_vxlan_port(struct net_device *netdev,
7651                                 sa_family_t sa_family, __be16 port)
7652 {
7653         struct i40e_netdev_priv *np = netdev_priv(netdev);
7654         struct i40e_vsi *vsi = np->vsi;
7655         struct i40e_pf *pf = vsi->back;
7656         u8 next_idx;
7657         u8 idx;
7658
7659         if (sa_family == AF_INET6)
7660                 return;
7661
7662         idx = i40e_get_vxlan_port_idx(pf, port);
7663
7664         /* Check if port already exists */
7665         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7666                 netdev_info(netdev, "Port %d already offloaded\n", ntohs(port));
7667                 return;
7668         }
7669
7670         /* Now check if there is space to add the new port */
7671         next_idx = i40e_get_vxlan_port_idx(pf, 0);
7672
7673         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7674                 netdev_info(netdev, "Maximum number of UDP ports reached, not adding port %d\n",
7675                             ntohs(port));
7676                 return;
7677         }
7678
7679         /* New port: add it and mark its index in the bitmap */
7680         pf->vxlan_ports[next_idx] = port;
7681         pf->pending_vxlan_bitmap |= (1 << next_idx);
7682
7683         pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
7684 }
7685
7686 /**
7687  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
7688  * @netdev: This physical port's netdev
7689  * @sa_family: Socket Family that VXLAN is notifying us about
7690  * @port: UDP port number that VXLAN stopped listening to
7691  **/
7692 static void i40e_del_vxlan_port(struct net_device *netdev,
7693                                 sa_family_t sa_family, __be16 port)
7694 {
7695         struct i40e_netdev_priv *np = netdev_priv(netdev);
7696         struct i40e_vsi *vsi = np->vsi;
7697         struct i40e_pf *pf = vsi->back;
7698         u8 idx;
7699
7700         if (sa_family == AF_INET6)
7701                 return;
7702
7703         idx = i40e_get_vxlan_port_idx(pf, port);
7704
7705         /* Check if port already exists */
7706         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7707                 /* if port exists, set it to 0 (mark for deletion)
7708                  * and make it pending
7709                  */
7710                 pf->vxlan_ports[idx] = 0;
7711
7712                 pf->pending_vxlan_bitmap |= (1 << idx);
7713
7714                 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
7715         } else {
7716                 netdev_warn(netdev, "Port %d was not found, not deleting\n",
7717                             ntohs(port));
7718         }
7719 }
7720
7721 #endif
7722 static int i40e_get_phys_port_id(struct net_device *netdev,
7723                                  struct netdev_phys_item_id *ppid)
7724 {
7725         struct i40e_netdev_priv *np = netdev_priv(netdev);
7726         struct i40e_pf *pf = np->vsi->back;
7727         struct i40e_hw *hw = &pf->hw;
7728
7729         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
7730                 return -EOPNOTSUPP;
7731
7732         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
7733         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
7734
7735         return 0;
7736 }
7737
7738 /**
7739  * i40e_ndo_fdb_add - add an entry to the hardware database
7740  * @ndm: the input from the stack
7741  * @tb: pointer to array of nladdr (unused)
7742  * @dev: the net device pointer
7743  * @addr: the MAC address entry being added
7744  * @flags: instructions from stack about fdb operation
7745  */
7746 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
7747                             struct net_device *dev,
7748                             const unsigned char *addr, u16 vid,
7749                             u16 flags)
7750 {
7751         struct i40e_netdev_priv *np = netdev_priv(dev);
7752         struct i40e_pf *pf = np->vsi->back;
7753         int err = 0;
7754
7755         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
7756                 return -EOPNOTSUPP;
7757
7758         if (vid) {
7759                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
7760                 return -EINVAL;
7761         }
7762
7763         /* Hardware does not support aging addresses so if a
7764          * ndm_state is given only allow permanent addresses
7765          */
7766         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
7767                 netdev_info(dev, "FDB only supports static addresses\n");
7768                 return -EINVAL;
7769         }
7770
7771         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
7772                 err = dev_uc_add_excl(dev, addr);
7773         else if (is_multicast_ether_addr(addr))
7774                 err = dev_mc_add_excl(dev, addr);
7775         else
7776                 err = -EINVAL;
7777
7778         /* Only return duplicate errors if NLM_F_EXCL is set */
7779         if (err == -EEXIST && !(flags & NLM_F_EXCL))
7780                 err = 0;
7781
7782         return err;
7783 }
7784
7785 #ifdef HAVE_BRIDGE_ATTRIBS
7786 /**
7787  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
7788  * @dev: the netdev being configured
7789  * @nlh: RTNL message
7790  *
7791  * Inserts a new hardware bridge if not already created and
7792  * enables the bridging mode requested (VEB or VEPA). If the
7793  * hardware bridge has already been inserted and the request
7794  * is to change the mode then that requires a PF reset to
7795  * allow rebuild of the components with required hardware
7796  * bridge mode enabled.
7797  **/
7798 static int i40e_ndo_bridge_setlink(struct net_device *dev,
7799                                    struct nlmsghdr *nlh)
7800 {
7801         struct i40e_netdev_priv *np = netdev_priv(dev);
7802         struct i40e_vsi *vsi = np->vsi;
7803         struct i40e_pf *pf = vsi->back;
7804         struct i40e_veb *veb = NULL;
7805         struct nlattr *attr, *br_spec;
7806         int i, rem;
7807
7808         /* Only for PF VSI for now */
7809         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
7810                 return -EOPNOTSUPP;
7811
7812         /* Find the HW bridge for PF VSI */
7813         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
7814                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
7815                         veb = pf->veb[i];
7816         }
7817
7818         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
7819
7820         nla_for_each_nested(attr, br_spec, rem) {
7821                 __u16 mode;
7822
7823                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
7824                         continue;
7825
7826                 mode = nla_get_u16(attr);
7827                 if ((mode != BRIDGE_MODE_VEPA) &&
7828                     (mode != BRIDGE_MODE_VEB))
7829                         return -EINVAL;
7830
7831                 /* Insert a new HW bridge */
7832                 if (!veb) {
7833                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
7834                                              vsi->tc_config.enabled_tc);
7835                         if (veb) {
7836                                 veb->bridge_mode = mode;
7837                                 i40e_config_bridge_mode(veb);
7838                         } else {
7839                                 /* No Bridge HW offload available */
7840                                 return -ENOENT;
7841                         }
7842                         break;
7843                 } else if (mode != veb->bridge_mode) {
7844                         /* Existing HW bridge but different mode needs reset */
7845                         veb->bridge_mode = mode;
7846                         i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
7847                         break;
7848                 }
7849         }
7850
7851         return 0;
7852 }
7853
7854 /**
7855  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
7856  * @skb: skb buff
7857  * @pid: process id
7858  * @seq: RTNL message seq #
7859  * @dev: the netdev being configured
7860  * @filter_mask: unused
7861  *
7862  * Return the mode in which the hardware bridge is operating in
7863  * i.e VEB or VEPA.
7864  **/
7865 #ifdef HAVE_BRIDGE_FILTER
7866 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
7867                                    struct net_device *dev,
7868                                    u32 __always_unused filter_mask)
7869 #else
7870 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
7871                                    struct net_device *dev)
7872 #endif /* HAVE_BRIDGE_FILTER */
7873 {
7874         struct i40e_netdev_priv *np = netdev_priv(dev);
7875         struct i40e_vsi *vsi = np->vsi;
7876         struct i40e_pf *pf = vsi->back;
7877         struct i40e_veb *veb = NULL;
7878         int i;
7879
7880         /* Only for PF VSI for now */
7881         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
7882                 return -EOPNOTSUPP;
7883
7884         /* Find the HW bridge for the PF VSI */
7885         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
7886                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
7887                         veb = pf->veb[i];
7888         }
7889
7890         if (!veb)
7891                 return 0;
7892
7893         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode);
7894 }
7895 #endif /* HAVE_BRIDGE_ATTRIBS */
7896
7897 const struct net_device_ops i40e_netdev_ops = {
7898         .ndo_open               = i40e_open,
7899         .ndo_stop               = i40e_close,
7900         .ndo_start_xmit         = i40e_lan_xmit_frame,
7901         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
7902         .ndo_set_rx_mode        = i40e_set_rx_mode,
7903         .ndo_validate_addr      = eth_validate_addr,
7904         .ndo_set_mac_address    = i40e_set_mac,
7905         .ndo_change_mtu         = i40e_change_mtu,
7906         .ndo_do_ioctl           = i40e_ioctl,
7907         .ndo_tx_timeout         = i40e_tx_timeout,
7908         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
7909         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
7910 #ifdef CONFIG_NET_POLL_CONTROLLER
7911         .ndo_poll_controller    = i40e_netpoll,
7912 #endif
7913         .ndo_setup_tc           = i40e_setup_tc,
7914 #ifdef I40E_FCOE
7915         .ndo_fcoe_enable        = i40e_fcoe_enable,
7916         .ndo_fcoe_disable       = i40e_fcoe_disable,
7917 #endif
7918         .ndo_set_features       = i40e_set_features,
7919         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
7920         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
7921         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
7922         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
7923         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
7924         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
7925 #ifdef CONFIG_I40E_VXLAN
7926         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
7927         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
7928 #endif
7929         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
7930         .ndo_fdb_add            = i40e_ndo_fdb_add,
7931 #ifdef HAVE_BRIDGE_ATTRIBS
7932         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
7933         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
7934 #endif /* HAVE_BRIDGE_ATTRIBS */
7935 };
7936
7937 /**
7938  * i40e_config_netdev - Setup the netdev flags
7939  * @vsi: the VSI being configured
7940  *
7941  * Returns 0 on success, negative value on failure
7942  **/
7943 static int i40e_config_netdev(struct i40e_vsi *vsi)
7944 {
7945         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
7946         struct i40e_pf *pf = vsi->back;
7947         struct i40e_hw *hw = &pf->hw;
7948         struct i40e_netdev_priv *np;
7949         struct net_device *netdev;
7950         u8 mac_addr[ETH_ALEN];
7951         int etherdev_size;
7952
7953         etherdev_size = sizeof(struct i40e_netdev_priv);
7954         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
7955         if (!netdev)
7956                 return -ENOMEM;
7957
7958         vsi->netdev = netdev;
7959         np = netdev_priv(netdev);
7960         np->vsi = vsi;
7961
7962         netdev->hw_enc_features |= NETIF_F_IP_CSUM       |
7963                                   NETIF_F_GSO_UDP_TUNNEL |
7964                                   NETIF_F_TSO;
7965
7966         netdev->features = NETIF_F_SG                  |
7967                            NETIF_F_IP_CSUM             |
7968                            NETIF_F_SCTP_CSUM           |
7969                            NETIF_F_HIGHDMA             |
7970                            NETIF_F_GSO_UDP_TUNNEL      |
7971                            NETIF_F_HW_VLAN_CTAG_TX     |
7972                            NETIF_F_HW_VLAN_CTAG_RX     |
7973                            NETIF_F_HW_VLAN_CTAG_FILTER |
7974                            NETIF_F_IPV6_CSUM           |
7975                            NETIF_F_TSO                 |
7976                            NETIF_F_TSO_ECN             |
7977                            NETIF_F_TSO6                |
7978                            NETIF_F_RXCSUM              |
7979                            NETIF_F_RXHASH              |
7980                            0;
7981
7982         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
7983                 netdev->features |= NETIF_F_NTUPLE;
7984
7985         /* copy netdev features into list of user selectable features */
7986         netdev->hw_features |= netdev->features;
7987
7988         if (vsi->type == I40E_VSI_MAIN) {
7989                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
7990                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
7991                 /* The following steps are necessary to prevent reception
7992                  * of tagged packets - some older NVM configurations load a
7993                  * default a MAC-VLAN filter that accepts any tagged packet
7994                  * which must be replaced by a normal filter.
7995                  */
7996                 if (!i40e_rm_default_mac_filter(vsi, mac_addr))
7997                         i40e_add_filter(vsi, mac_addr,
7998                                         I40E_VLAN_ANY, false, true);
7999         } else {
8000                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
8001                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
8002                          pf->vsi[pf->lan_vsi]->netdev->name);
8003                 random_ether_addr(mac_addr);
8004                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
8005         }
8006         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
8007
8008         ether_addr_copy(netdev->dev_addr, mac_addr);
8009         ether_addr_copy(netdev->perm_addr, mac_addr);
8010         /* vlan gets same features (except vlan offload)
8011          * after any tweaks for specific VSI types
8012          */
8013         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
8014                                                      NETIF_F_HW_VLAN_CTAG_RX |
8015                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
8016         netdev->priv_flags |= IFF_UNICAST_FLT;
8017         netdev->priv_flags |= IFF_SUPP_NOFCS;
8018         /* Setup netdev TC information */
8019         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
8020
8021         netdev->netdev_ops = &i40e_netdev_ops;
8022         netdev->watchdog_timeo = 5 * HZ;
8023         i40e_set_ethtool_ops(netdev);
8024 #ifdef I40E_FCOE
8025         i40e_fcoe_config_netdev(netdev, vsi);
8026 #endif
8027
8028         return 0;
8029 }
8030
8031 /**
8032  * i40e_vsi_delete - Delete a VSI from the switch
8033  * @vsi: the VSI being removed
8034  *
8035  * Returns 0 on success, negative value on failure
8036  **/
8037 static void i40e_vsi_delete(struct i40e_vsi *vsi)
8038 {
8039         /* remove default VSI is not allowed */
8040         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
8041                 return;
8042
8043         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
8044 }
8045
8046 /**
8047  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
8048  * @vsi: the VSI being queried
8049  *
8050  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
8051  **/
8052 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
8053 {
8054         struct i40e_veb *veb;
8055         struct i40e_pf *pf = vsi->back;
8056
8057         /* Uplink is not a bridge so default to VEB */
8058         if (vsi->veb_idx == I40E_NO_VEB)
8059                 return 1;
8060
8061         veb = pf->veb[vsi->veb_idx];
8062         /* Uplink is a bridge in VEPA mode */
8063         if (veb && (veb->bridge_mode & BRIDGE_MODE_VEPA))
8064                 return 0;
8065
8066         /* Uplink is a bridge in VEB mode */
8067         return 1;
8068 }
8069
8070 /**
8071  * i40e_add_vsi - Add a VSI to the switch
8072  * @vsi: the VSI being configured
8073  *
8074  * This initializes a VSI context depending on the VSI type to be added and
8075  * passes it down to the add_vsi aq command.
8076  **/
8077 static int i40e_add_vsi(struct i40e_vsi *vsi)
8078 {
8079         int ret = -ENODEV;
8080         struct i40e_mac_filter *f, *ftmp;
8081         struct i40e_pf *pf = vsi->back;
8082         struct i40e_hw *hw = &pf->hw;
8083         struct i40e_vsi_context ctxt;
8084         u8 enabled_tc = 0x1; /* TC0 enabled */
8085         int f_count = 0;
8086
8087         memset(&ctxt, 0, sizeof(ctxt));
8088         switch (vsi->type) {
8089         case I40E_VSI_MAIN:
8090                 /* The PF's main VSI is already setup as part of the
8091                  * device initialization, so we'll not bother with
8092                  * the add_vsi call, but we will retrieve the current
8093                  * VSI context.
8094                  */
8095                 ctxt.seid = pf->main_vsi_seid;
8096                 ctxt.pf_num = pf->hw.pf_id;
8097                 ctxt.vf_num = 0;
8098                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
8099                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8100                 if (ret) {
8101                         dev_info(&pf->pdev->dev,
8102                                  "couldn't get pf vsi config, err %d, aq_err %d\n",
8103                                  ret, pf->hw.aq.asq_last_status);
8104                         return -ENOENT;
8105                 }
8106                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
8107                 vsi->info.valid_sections = 0;
8108
8109                 vsi->seid = ctxt.seid;
8110                 vsi->id = ctxt.vsi_number;
8111
8112                 enabled_tc = i40e_pf_get_tc_map(pf);
8113
8114                 /* MFP mode setup queue map and update VSI */
8115                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
8116                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
8117                         memset(&ctxt, 0, sizeof(ctxt));
8118                         ctxt.seid = pf->main_vsi_seid;
8119                         ctxt.pf_num = pf->hw.pf_id;
8120                         ctxt.vf_num = 0;
8121                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
8122                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
8123                         if (ret) {
8124                                 dev_info(&pf->pdev->dev,
8125                                          "update vsi failed, aq_err=%d\n",
8126                                          pf->hw.aq.asq_last_status);
8127                                 ret = -ENOENT;
8128                                 goto err;
8129                         }
8130                         /* update the local VSI info queue map */
8131                         i40e_vsi_update_queue_map(vsi, &ctxt);
8132                         vsi->info.valid_sections = 0;
8133                 } else {
8134                         /* Default/Main VSI is only enabled for TC0
8135                          * reconfigure it to enable all TCs that are
8136                          * available on the port in SFP mode.
8137                          * For MFP case the iSCSI PF would use this
8138                          * flow to enable LAN+iSCSI TC.
8139                          */
8140                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
8141                         if (ret) {
8142                                 dev_info(&pf->pdev->dev,
8143                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %d, aq_err %d\n",
8144                                          enabled_tc, ret,
8145                                          pf->hw.aq.asq_last_status);
8146                                 ret = -ENOENT;
8147                         }
8148                 }
8149                 break;
8150
8151         case I40E_VSI_FDIR:
8152                 ctxt.pf_num = hw->pf_id;
8153                 ctxt.vf_num = 0;
8154                 ctxt.uplink_seid = vsi->uplink_seid;
8155                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8156                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8157                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8158                         ctxt.info.valid_sections |=
8159                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8160                         ctxt.info.switch_id =
8161                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8162                 }
8163                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8164                 break;
8165
8166         case I40E_VSI_VMDQ2:
8167                 ctxt.pf_num = hw->pf_id;
8168                 ctxt.vf_num = 0;
8169                 ctxt.uplink_seid = vsi->uplink_seid;
8170                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8171                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
8172
8173                 /* This VSI is connected to VEB so the switch_id
8174                  * should be set to zero by default.
8175                  */
8176                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8177                         ctxt.info.valid_sections |=
8178                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8179                         ctxt.info.switch_id =
8180                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8181                 }
8182
8183                 /* Setup the VSI tx/rx queue map for TC0 only for now */
8184                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8185                 break;
8186
8187         case I40E_VSI_SRIOV:
8188                 ctxt.pf_num = hw->pf_id;
8189                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
8190                 ctxt.uplink_seid = vsi->uplink_seid;
8191                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8192                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
8193
8194                 /* This VSI is connected to VEB so the switch_id
8195                  * should be set to zero by default.
8196                  */
8197                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8198                         ctxt.info.valid_sections |=
8199                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8200                         ctxt.info.switch_id =
8201                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8202                 }
8203
8204                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
8205                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
8206                 if (pf->vf[vsi->vf_id].spoofchk) {
8207                         ctxt.info.valid_sections |=
8208                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
8209                         ctxt.info.sec_flags |=
8210                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
8211                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
8212                 }
8213                 /* Setup the VSI tx/rx queue map for TC0 only for now */
8214                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8215                 break;
8216
8217 #ifdef I40E_FCOE
8218         case I40E_VSI_FCOE:
8219                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
8220                 if (ret) {
8221                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
8222                         return ret;
8223                 }
8224                 break;
8225
8226 #endif /* I40E_FCOE */
8227         default:
8228                 return -ENODEV;
8229         }
8230
8231         if (vsi->type != I40E_VSI_MAIN) {
8232                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
8233                 if (ret) {
8234                         dev_info(&vsi->back->pdev->dev,
8235                                  "add vsi failed, aq_err=%d\n",
8236                                  vsi->back->hw.aq.asq_last_status);
8237                         ret = -ENOENT;
8238                         goto err;
8239                 }
8240                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
8241                 vsi->info.valid_sections = 0;
8242                 vsi->seid = ctxt.seid;
8243                 vsi->id = ctxt.vsi_number;
8244         }
8245
8246         /* If macvlan filters already exist, force them to get loaded */
8247         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
8248                 f->changed = true;
8249                 f_count++;
8250
8251                 if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
8252                         struct i40e_aqc_remove_macvlan_element_data element;
8253
8254                         memset(&element, 0, sizeof(element));
8255                         ether_addr_copy(element.mac_addr, f->macaddr);
8256                         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
8257                         ret = i40e_aq_remove_macvlan(hw, vsi->seid,
8258                                                      &element, 1, NULL);
8259                         if (ret) {
8260                                 /* some older FW has a different default */
8261                                 element.flags |=
8262                                                I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
8263                                 i40e_aq_remove_macvlan(hw, vsi->seid,
8264                                                        &element, 1, NULL);
8265                         }
8266
8267                         i40e_aq_mac_address_write(hw,
8268                                                   I40E_AQC_WRITE_TYPE_LAA_WOL,
8269                                                   f->macaddr, NULL);
8270                 }
8271         }
8272         if (f_count) {
8273                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
8274                 pf->flags |= I40E_FLAG_FILTER_SYNC;
8275         }
8276
8277         /* Update VSI BW information */
8278         ret = i40e_vsi_get_bw_info(vsi);
8279         if (ret) {
8280                 dev_info(&pf->pdev->dev,
8281                          "couldn't get vsi bw info, err %d, aq_err %d\n",
8282                          ret, pf->hw.aq.asq_last_status);
8283                 /* VSI is already added so not tearing that up */
8284                 ret = 0;
8285         }
8286
8287 err:
8288         return ret;
8289 }
8290
8291 /**
8292  * i40e_vsi_release - Delete a VSI and free its resources
8293  * @vsi: the VSI being removed
8294  *
8295  * Returns 0 on success or < 0 on error
8296  **/
8297 int i40e_vsi_release(struct i40e_vsi *vsi)
8298 {
8299         struct i40e_mac_filter *f, *ftmp;
8300         struct i40e_veb *veb = NULL;
8301         struct i40e_pf *pf;
8302         u16 uplink_seid;
8303         int i, n;
8304
8305         pf = vsi->back;
8306
8307         /* release of a VEB-owner or last VSI is not allowed */
8308         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
8309                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
8310                          vsi->seid, vsi->uplink_seid);
8311                 return -ENODEV;
8312         }
8313         if (vsi == pf->vsi[pf->lan_vsi] &&
8314             !test_bit(__I40E_DOWN, &pf->state)) {
8315                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
8316                 return -ENODEV;
8317         }
8318
8319         uplink_seid = vsi->uplink_seid;
8320         if (vsi->type != I40E_VSI_SRIOV) {
8321                 if (vsi->netdev_registered) {
8322                         vsi->netdev_registered = false;
8323                         if (vsi->netdev) {
8324                                 /* results in a call to i40e_close() */
8325                                 unregister_netdev(vsi->netdev);
8326                         }
8327                 } else {
8328                         i40e_vsi_close(vsi);
8329                 }
8330                 i40e_vsi_disable_irq(vsi);
8331         }
8332
8333         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
8334                 i40e_del_filter(vsi, f->macaddr, f->vlan,
8335                                 f->is_vf, f->is_netdev);
8336         i40e_sync_vsi_filters(vsi);
8337
8338         i40e_vsi_delete(vsi);
8339         i40e_vsi_free_q_vectors(vsi);
8340         if (vsi->netdev) {
8341                 free_netdev(vsi->netdev);
8342                 vsi->netdev = NULL;
8343         }
8344         i40e_vsi_clear_rings(vsi);
8345         i40e_vsi_clear(vsi);
8346
8347         /* If this was the last thing on the VEB, except for the
8348          * controlling VSI, remove the VEB, which puts the controlling
8349          * VSI onto the next level down in the switch.
8350          *
8351          * Well, okay, there's one more exception here: don't remove
8352          * the orphan VEBs yet.  We'll wait for an explicit remove request
8353          * from up the network stack.
8354          */
8355         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
8356                 if (pf->vsi[i] &&
8357                     pf->vsi[i]->uplink_seid == uplink_seid &&
8358                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
8359                         n++;      /* count the VSIs */
8360                 }
8361         }
8362         for (i = 0; i < I40E_MAX_VEB; i++) {
8363                 if (!pf->veb[i])
8364                         continue;
8365                 if (pf->veb[i]->uplink_seid == uplink_seid)
8366                         n++;     /* count the VEBs */
8367                 if (pf->veb[i]->seid == uplink_seid)
8368                         veb = pf->veb[i];
8369         }
8370         if (n == 0 && veb && veb->uplink_seid != 0)
8371                 i40e_veb_release(veb);
8372
8373         return 0;
8374 }
8375
8376 /**
8377  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
8378  * @vsi: ptr to the VSI
8379  *
8380  * This should only be called after i40e_vsi_mem_alloc() which allocates the
8381  * corresponding SW VSI structure and initializes num_queue_pairs for the
8382  * newly allocated VSI.
8383  *
8384  * Returns 0 on success or negative on failure
8385  **/
8386 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
8387 {
8388         int ret = -ENOENT;
8389         struct i40e_pf *pf = vsi->back;
8390
8391         if (vsi->q_vectors[0]) {
8392                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
8393                          vsi->seid);
8394                 return -EEXIST;
8395         }
8396
8397         if (vsi->base_vector) {
8398                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
8399                          vsi->seid, vsi->base_vector);
8400                 return -EEXIST;
8401         }
8402
8403         ret = i40e_vsi_alloc_q_vectors(vsi);
8404         if (ret) {
8405                 dev_info(&pf->pdev->dev,
8406                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
8407                          vsi->num_q_vectors, vsi->seid, ret);
8408                 vsi->num_q_vectors = 0;
8409                 goto vector_setup_out;
8410         }
8411
8412         if (vsi->num_q_vectors)
8413                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
8414                                                  vsi->num_q_vectors, vsi->idx);
8415         if (vsi->base_vector < 0) {
8416                 dev_info(&pf->pdev->dev,
8417                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
8418                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
8419                 i40e_vsi_free_q_vectors(vsi);
8420                 ret = -ENOENT;
8421                 goto vector_setup_out;
8422         }
8423
8424 vector_setup_out:
8425         return ret;
8426 }
8427
8428 /**
8429  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
8430  * @vsi: pointer to the vsi.
8431  *
8432  * This re-allocates a vsi's queue resources.
8433  *
8434  * Returns pointer to the successfully allocated and configured VSI sw struct
8435  * on success, otherwise returns NULL on failure.
8436  **/
8437 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
8438 {
8439         struct i40e_pf *pf = vsi->back;
8440         u8 enabled_tc;
8441         int ret;
8442
8443         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
8444         i40e_vsi_clear_rings(vsi);
8445
8446         i40e_vsi_free_arrays(vsi, false);
8447         i40e_set_num_rings_in_vsi(vsi);
8448         ret = i40e_vsi_alloc_arrays(vsi, false);
8449         if (ret)
8450                 goto err_vsi;
8451
8452         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
8453         if (ret < 0) {
8454                 dev_info(&pf->pdev->dev,
8455                          "failed to get tracking for %d queues for VSI %d err=%d\n",
8456                          vsi->alloc_queue_pairs, vsi->seid, ret);
8457                 goto err_vsi;
8458         }
8459         vsi->base_queue = ret;
8460
8461         /* Update the FW view of the VSI. Force a reset of TC and queue
8462          * layout configurations.
8463          */
8464         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
8465         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
8466         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
8467         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
8468
8469         /* assign it some queues */
8470         ret = i40e_alloc_rings(vsi);
8471         if (ret)
8472                 goto err_rings;
8473
8474         /* map all of the rings to the q_vectors */
8475         i40e_vsi_map_rings_to_vectors(vsi);
8476         return vsi;
8477
8478 err_rings:
8479         i40e_vsi_free_q_vectors(vsi);
8480         if (vsi->netdev_registered) {
8481                 vsi->netdev_registered = false;
8482                 unregister_netdev(vsi->netdev);
8483                 free_netdev(vsi->netdev);
8484                 vsi->netdev = NULL;
8485         }
8486         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
8487 err_vsi:
8488         i40e_vsi_clear(vsi);
8489         return NULL;
8490 }
8491
8492 /**
8493  * i40e_vsi_setup - Set up a VSI by a given type
8494  * @pf: board private structure
8495  * @type: VSI type
8496  * @uplink_seid: the switch element to link to
8497  * @param1: usage depends upon VSI type. For VF types, indicates VF id
8498  *
8499  * This allocates the sw VSI structure and its queue resources, then add a VSI
8500  * to the identified VEB.
8501  *
8502  * Returns pointer to the successfully allocated and configure VSI sw struct on
8503  * success, otherwise returns NULL on failure.
8504  **/
8505 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
8506                                 u16 uplink_seid, u32 param1)
8507 {
8508         struct i40e_vsi *vsi = NULL;
8509         struct i40e_veb *veb = NULL;
8510         int ret, i;
8511         int v_idx;
8512
8513         /* The requested uplink_seid must be either
8514          *     - the PF's port seid
8515          *              no VEB is needed because this is the PF
8516          *              or this is a Flow Director special case VSI
8517          *     - seid of an existing VEB
8518          *     - seid of a VSI that owns an existing VEB
8519          *     - seid of a VSI that doesn't own a VEB
8520          *              a new VEB is created and the VSI becomes the owner
8521          *     - seid of the PF VSI, which is what creates the first VEB
8522          *              this is a special case of the previous
8523          *
8524          * Find which uplink_seid we were given and create a new VEB if needed
8525          */
8526         for (i = 0; i < I40E_MAX_VEB; i++) {
8527                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
8528                         veb = pf->veb[i];
8529                         break;
8530                 }
8531         }
8532
8533         if (!veb && uplink_seid != pf->mac_seid) {
8534
8535                 for (i = 0; i < pf->num_alloc_vsi; i++) {
8536                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
8537                                 vsi = pf->vsi[i];
8538                                 break;
8539                         }
8540                 }
8541                 if (!vsi) {
8542                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
8543                                  uplink_seid);
8544                         return NULL;
8545                 }
8546
8547                 if (vsi->uplink_seid == pf->mac_seid)
8548                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
8549                                              vsi->tc_config.enabled_tc);
8550                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
8551                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8552                                              vsi->tc_config.enabled_tc);
8553                 if (veb) {
8554                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
8555                                 dev_info(&vsi->back->pdev->dev,
8556                                          "%s: New VSI creation error, uplink seid of LAN VSI expected.\n",
8557                                          __func__);
8558                                 return NULL;
8559                         }
8560                         i40e_config_bridge_mode(veb);
8561                 }
8562                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8563                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8564                                 veb = pf->veb[i];
8565                 }
8566                 if (!veb) {
8567                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
8568                         return NULL;
8569                 }
8570
8571                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
8572                 uplink_seid = veb->seid;
8573         }
8574
8575         /* get vsi sw struct */
8576         v_idx = i40e_vsi_mem_alloc(pf, type);
8577         if (v_idx < 0)
8578                 goto err_alloc;
8579         vsi = pf->vsi[v_idx];
8580         if (!vsi)
8581                 goto err_alloc;
8582         vsi->type = type;
8583         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
8584
8585         if (type == I40E_VSI_MAIN)
8586                 pf->lan_vsi = v_idx;
8587         else if (type == I40E_VSI_SRIOV)
8588                 vsi->vf_id = param1;
8589         /* assign it some queues */
8590         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
8591                                 vsi->idx);
8592         if (ret < 0) {
8593                 dev_info(&pf->pdev->dev,
8594                          "failed to get tracking for %d queues for VSI %d err=%d\n",
8595                          vsi->alloc_queue_pairs, vsi->seid, ret);
8596                 goto err_vsi;
8597         }
8598         vsi->base_queue = ret;
8599
8600         /* get a VSI from the hardware */
8601         vsi->uplink_seid = uplink_seid;
8602         ret = i40e_add_vsi(vsi);
8603         if (ret)
8604                 goto err_vsi;
8605
8606         switch (vsi->type) {
8607         /* setup the netdev if needed */
8608         case I40E_VSI_MAIN:
8609         case I40E_VSI_VMDQ2:
8610         case I40E_VSI_FCOE:
8611                 ret = i40e_config_netdev(vsi);
8612                 if (ret)
8613                         goto err_netdev;
8614                 ret = register_netdev(vsi->netdev);
8615                 if (ret)
8616                         goto err_netdev;
8617                 vsi->netdev_registered = true;
8618                 netif_carrier_off(vsi->netdev);
8619 #ifdef CONFIG_I40E_DCB
8620                 /* Setup DCB netlink interface */
8621                 i40e_dcbnl_setup(vsi);
8622 #endif /* CONFIG_I40E_DCB */
8623                 /* fall through */
8624
8625         case I40E_VSI_FDIR:
8626                 /* set up vectors and rings if needed */
8627                 ret = i40e_vsi_setup_vectors(vsi);
8628                 if (ret)
8629                         goto err_msix;
8630
8631                 ret = i40e_alloc_rings(vsi);
8632                 if (ret)
8633                         goto err_rings;
8634
8635                 /* map all of the rings to the q_vectors */
8636                 i40e_vsi_map_rings_to_vectors(vsi);
8637
8638                 i40e_vsi_reset_stats(vsi);
8639                 break;
8640
8641         default:
8642                 /* no netdev or rings for the other VSI types */
8643                 break;
8644         }
8645
8646         return vsi;
8647
8648 err_rings:
8649         i40e_vsi_free_q_vectors(vsi);
8650 err_msix:
8651         if (vsi->netdev_registered) {
8652                 vsi->netdev_registered = false;
8653                 unregister_netdev(vsi->netdev);
8654                 free_netdev(vsi->netdev);
8655                 vsi->netdev = NULL;
8656         }
8657 err_netdev:
8658         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
8659 err_vsi:
8660         i40e_vsi_clear(vsi);
8661 err_alloc:
8662         return NULL;
8663 }
8664
8665 /**
8666  * i40e_veb_get_bw_info - Query VEB BW information
8667  * @veb: the veb to query
8668  *
8669  * Query the Tx scheduler BW configuration data for given VEB
8670  **/
8671 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
8672 {
8673         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
8674         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
8675         struct i40e_pf *pf = veb->pf;
8676         struct i40e_hw *hw = &pf->hw;
8677         u32 tc_bw_max;
8678         int ret = 0;
8679         int i;
8680
8681         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
8682                                                   &bw_data, NULL);
8683         if (ret) {
8684                 dev_info(&pf->pdev->dev,
8685                          "query veb bw config failed, aq_err=%d\n",
8686                          hw->aq.asq_last_status);
8687                 goto out;
8688         }
8689
8690         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
8691                                                    &ets_data, NULL);
8692         if (ret) {
8693                 dev_info(&pf->pdev->dev,
8694                          "query veb bw ets config failed, aq_err=%d\n",
8695                          hw->aq.asq_last_status);
8696                 goto out;
8697         }
8698
8699         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
8700         veb->bw_max_quanta = ets_data.tc_bw_max;
8701         veb->is_abs_credits = bw_data.absolute_credits_enable;
8702         veb->enabled_tc = ets_data.tc_valid_bits;
8703         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
8704                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
8705         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
8706                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
8707                 veb->bw_tc_limit_credits[i] =
8708                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
8709                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
8710         }
8711
8712 out:
8713         return ret;
8714 }
8715
8716 /**
8717  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
8718  * @pf: board private structure
8719  *
8720  * On error: returns error code (negative)
8721  * On success: returns vsi index in PF (positive)
8722  **/
8723 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
8724 {
8725         int ret = -ENOENT;
8726         struct i40e_veb *veb;
8727         int i;
8728
8729         /* Need to protect the allocation of switch elements at the PF level */
8730         mutex_lock(&pf->switch_mutex);
8731
8732         /* VEB list may be fragmented if VEB creation/destruction has
8733          * been happening.  We can afford to do a quick scan to look
8734          * for any free slots in the list.
8735          *
8736          * find next empty veb slot, looping back around if necessary
8737          */
8738         i = 0;
8739         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
8740                 i++;
8741         if (i >= I40E_MAX_VEB) {
8742                 ret = -ENOMEM;
8743                 goto err_alloc_veb;  /* out of VEB slots! */
8744         }
8745
8746         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
8747         if (!veb) {
8748                 ret = -ENOMEM;
8749                 goto err_alloc_veb;
8750         }
8751         veb->pf = pf;
8752         veb->idx = i;
8753         veb->enabled_tc = 1;
8754
8755         pf->veb[i] = veb;
8756         ret = i;
8757 err_alloc_veb:
8758         mutex_unlock(&pf->switch_mutex);
8759         return ret;
8760 }
8761
8762 /**
8763  * i40e_switch_branch_release - Delete a branch of the switch tree
8764  * @branch: where to start deleting
8765  *
8766  * This uses recursion to find the tips of the branch to be
8767  * removed, deleting until we get back to and can delete this VEB.
8768  **/
8769 static void i40e_switch_branch_release(struct i40e_veb *branch)
8770 {
8771         struct i40e_pf *pf = branch->pf;
8772         u16 branch_seid = branch->seid;
8773         u16 veb_idx = branch->idx;
8774         int i;
8775
8776         /* release any VEBs on this VEB - RECURSION */
8777         for (i = 0; i < I40E_MAX_VEB; i++) {
8778                 if (!pf->veb[i])
8779                         continue;
8780                 if (pf->veb[i]->uplink_seid == branch->seid)
8781                         i40e_switch_branch_release(pf->veb[i]);
8782         }
8783
8784         /* Release the VSIs on this VEB, but not the owner VSI.
8785          *
8786          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
8787          *       the VEB itself, so don't use (*branch) after this loop.
8788          */
8789         for (i = 0; i < pf->num_alloc_vsi; i++) {
8790                 if (!pf->vsi[i])
8791                         continue;
8792                 if (pf->vsi[i]->uplink_seid == branch_seid &&
8793                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
8794                         i40e_vsi_release(pf->vsi[i]);
8795                 }
8796         }
8797
8798         /* There's one corner case where the VEB might not have been
8799          * removed, so double check it here and remove it if needed.
8800          * This case happens if the veb was created from the debugfs
8801          * commands and no VSIs were added to it.
8802          */
8803         if (pf->veb[veb_idx])
8804                 i40e_veb_release(pf->veb[veb_idx]);
8805 }
8806
8807 /**
8808  * i40e_veb_clear - remove veb struct
8809  * @veb: the veb to remove
8810  **/
8811 static void i40e_veb_clear(struct i40e_veb *veb)
8812 {
8813         if (!veb)
8814                 return;
8815
8816         if (veb->pf) {
8817                 struct i40e_pf *pf = veb->pf;
8818
8819                 mutex_lock(&pf->switch_mutex);
8820                 if (pf->veb[veb->idx] == veb)
8821                         pf->veb[veb->idx] = NULL;
8822                 mutex_unlock(&pf->switch_mutex);
8823         }
8824
8825         kfree(veb);
8826 }
8827
8828 /**
8829  * i40e_veb_release - Delete a VEB and free its resources
8830  * @veb: the VEB being removed
8831  **/
8832 void i40e_veb_release(struct i40e_veb *veb)
8833 {
8834         struct i40e_vsi *vsi = NULL;
8835         struct i40e_pf *pf;
8836         int i, n = 0;
8837
8838         pf = veb->pf;
8839
8840         /* find the remaining VSI and check for extras */
8841         for (i = 0; i < pf->num_alloc_vsi; i++) {
8842                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
8843                         n++;
8844                         vsi = pf->vsi[i];
8845                 }
8846         }
8847         if (n != 1) {
8848                 dev_info(&pf->pdev->dev,
8849                          "can't remove VEB %d with %d VSIs left\n",
8850                          veb->seid, n);
8851                 return;
8852         }
8853
8854         /* move the remaining VSI to uplink veb */
8855         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
8856         if (veb->uplink_seid) {
8857                 vsi->uplink_seid = veb->uplink_seid;
8858                 if (veb->uplink_seid == pf->mac_seid)
8859                         vsi->veb_idx = I40E_NO_VEB;
8860                 else
8861                         vsi->veb_idx = veb->veb_idx;
8862         } else {
8863                 /* floating VEB */
8864                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
8865                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
8866         }
8867
8868         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
8869         i40e_veb_clear(veb);
8870 }
8871
8872 /**
8873  * i40e_add_veb - create the VEB in the switch
8874  * @veb: the VEB to be instantiated
8875  * @vsi: the controlling VSI
8876  **/
8877 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
8878 {
8879         bool is_default = false;
8880         bool is_cloud = false;
8881         int ret;
8882
8883         /* get a VEB from the hardware */
8884         ret = i40e_aq_add_veb(&veb->pf->hw, veb->uplink_seid, vsi->seid,
8885                               veb->enabled_tc, is_default,
8886                               is_cloud, &veb->seid, NULL);
8887         if (ret) {
8888                 dev_info(&veb->pf->pdev->dev,
8889                          "couldn't add VEB, err %d, aq_err %d\n",
8890                          ret, veb->pf->hw.aq.asq_last_status);
8891                 return -EPERM;
8892         }
8893
8894         /* get statistics counter */
8895         ret = i40e_aq_get_veb_parameters(&veb->pf->hw, veb->seid, NULL, NULL,
8896                                          &veb->stats_idx, NULL, NULL, NULL);
8897         if (ret) {
8898                 dev_info(&veb->pf->pdev->dev,
8899                          "couldn't get VEB statistics idx, err %d, aq_err %d\n",
8900                          ret, veb->pf->hw.aq.asq_last_status);
8901                 return -EPERM;
8902         }
8903         ret = i40e_veb_get_bw_info(veb);
8904         if (ret) {
8905                 dev_info(&veb->pf->pdev->dev,
8906                          "couldn't get VEB bw info, err %d, aq_err %d\n",
8907                          ret, veb->pf->hw.aq.asq_last_status);
8908                 i40e_aq_delete_element(&veb->pf->hw, veb->seid, NULL);
8909                 return -ENOENT;
8910         }
8911
8912         vsi->uplink_seid = veb->seid;
8913         vsi->veb_idx = veb->idx;
8914         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
8915
8916         return 0;
8917 }
8918
8919 /**
8920  * i40e_veb_setup - Set up a VEB
8921  * @pf: board private structure
8922  * @flags: VEB setup flags
8923  * @uplink_seid: the switch element to link to
8924  * @vsi_seid: the initial VSI seid
8925  * @enabled_tc: Enabled TC bit-map
8926  *
8927  * This allocates the sw VEB structure and links it into the switch
8928  * It is possible and legal for this to be a duplicate of an already
8929  * existing VEB.  It is also possible for both uplink and vsi seids
8930  * to be zero, in order to create a floating VEB.
8931  *
8932  * Returns pointer to the successfully allocated VEB sw struct on
8933  * success, otherwise returns NULL on failure.
8934  **/
8935 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
8936                                 u16 uplink_seid, u16 vsi_seid,
8937                                 u8 enabled_tc)
8938 {
8939         struct i40e_veb *veb, *uplink_veb = NULL;
8940         int vsi_idx, veb_idx;
8941         int ret;
8942
8943         /* if one seid is 0, the other must be 0 to create a floating relay */
8944         if ((uplink_seid == 0 || vsi_seid == 0) &&
8945             (uplink_seid + vsi_seid != 0)) {
8946                 dev_info(&pf->pdev->dev,
8947                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
8948                          uplink_seid, vsi_seid);
8949                 return NULL;
8950         }
8951
8952         /* make sure there is such a vsi and uplink */
8953         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
8954                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
8955                         break;
8956         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
8957                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
8958                          vsi_seid);
8959                 return NULL;
8960         }
8961
8962         if (uplink_seid && uplink_seid != pf->mac_seid) {
8963                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
8964                         if (pf->veb[veb_idx] &&
8965                             pf->veb[veb_idx]->seid == uplink_seid) {
8966                                 uplink_veb = pf->veb[veb_idx];
8967                                 break;
8968                         }
8969                 }
8970                 if (!uplink_veb) {
8971                         dev_info(&pf->pdev->dev,
8972                                  "uplink seid %d not found\n", uplink_seid);
8973                         return NULL;
8974                 }
8975         }
8976
8977         /* get veb sw struct */
8978         veb_idx = i40e_veb_mem_alloc(pf);
8979         if (veb_idx < 0)
8980                 goto err_alloc;
8981         veb = pf->veb[veb_idx];
8982         veb->flags = flags;
8983         veb->uplink_seid = uplink_seid;
8984         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
8985         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
8986
8987         /* create the VEB in the switch */
8988         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
8989         if (ret)
8990                 goto err_veb;
8991         if (vsi_idx == pf->lan_vsi)
8992                 pf->lan_veb = veb->idx;
8993
8994         return veb;
8995
8996 err_veb:
8997         i40e_veb_clear(veb);
8998 err_alloc:
8999         return NULL;
9000 }
9001
9002 /**
9003  * i40e_setup_pf_switch_element - set pf vars based on switch type
9004  * @pf: board private structure
9005  * @ele: element we are building info from
9006  * @num_reported: total number of elements
9007  * @printconfig: should we print the contents
9008  *
9009  * helper function to assist in extracting a few useful SEID values.
9010  **/
9011 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
9012                                 struct i40e_aqc_switch_config_element_resp *ele,
9013                                 u16 num_reported, bool printconfig)
9014 {
9015         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
9016         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
9017         u8 element_type = ele->element_type;
9018         u16 seid = le16_to_cpu(ele->seid);
9019
9020         if (printconfig)
9021                 dev_info(&pf->pdev->dev,
9022                          "type=%d seid=%d uplink=%d downlink=%d\n",
9023                          element_type, seid, uplink_seid, downlink_seid);
9024
9025         switch (element_type) {
9026         case I40E_SWITCH_ELEMENT_TYPE_MAC:
9027                 pf->mac_seid = seid;
9028                 break;
9029         case I40E_SWITCH_ELEMENT_TYPE_VEB:
9030                 /* Main VEB? */
9031                 if (uplink_seid != pf->mac_seid)
9032                         break;
9033                 if (pf->lan_veb == I40E_NO_VEB) {
9034                         int v;
9035
9036                         /* find existing or else empty VEB */
9037                         for (v = 0; v < I40E_MAX_VEB; v++) {
9038                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
9039                                         pf->lan_veb = v;
9040                                         break;
9041                                 }
9042                         }
9043                         if (pf->lan_veb == I40E_NO_VEB) {
9044                                 v = i40e_veb_mem_alloc(pf);
9045                                 if (v < 0)
9046                                         break;
9047                                 pf->lan_veb = v;
9048                         }
9049                 }
9050
9051                 pf->veb[pf->lan_veb]->seid = seid;
9052                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
9053                 pf->veb[pf->lan_veb]->pf = pf;
9054                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
9055                 break;
9056         case I40E_SWITCH_ELEMENT_TYPE_VSI:
9057                 if (num_reported != 1)
9058                         break;
9059                 /* This is immediately after a reset so we can assume this is
9060                  * the PF's VSI
9061                  */
9062                 pf->mac_seid = uplink_seid;
9063                 pf->pf_seid = downlink_seid;
9064                 pf->main_vsi_seid = seid;
9065                 if (printconfig)
9066                         dev_info(&pf->pdev->dev,
9067                                  "pf_seid=%d main_vsi_seid=%d\n",
9068                                  pf->pf_seid, pf->main_vsi_seid);
9069                 break;
9070         case I40E_SWITCH_ELEMENT_TYPE_PF:
9071         case I40E_SWITCH_ELEMENT_TYPE_VF:
9072         case I40E_SWITCH_ELEMENT_TYPE_EMP:
9073         case I40E_SWITCH_ELEMENT_TYPE_BMC:
9074         case I40E_SWITCH_ELEMENT_TYPE_PE:
9075         case I40E_SWITCH_ELEMENT_TYPE_PA:
9076                 /* ignore these for now */
9077                 break;
9078         default:
9079                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
9080                          element_type, seid);
9081                 break;
9082         }
9083 }
9084
9085 /**
9086  * i40e_fetch_switch_configuration - Get switch config from firmware
9087  * @pf: board private structure
9088  * @printconfig: should we print the contents
9089  *
9090  * Get the current switch configuration from the device and
9091  * extract a few useful SEID values.
9092  **/
9093 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
9094 {
9095         struct i40e_aqc_get_switch_config_resp *sw_config;
9096         u16 next_seid = 0;
9097         int ret = 0;
9098         u8 *aq_buf;
9099         int i;
9100
9101         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
9102         if (!aq_buf)
9103                 return -ENOMEM;
9104
9105         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
9106         do {
9107                 u16 num_reported, num_total;
9108
9109                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
9110                                                 I40E_AQ_LARGE_BUF,
9111                                                 &next_seid, NULL);
9112                 if (ret) {
9113                         dev_info(&pf->pdev->dev,
9114                                  "get switch config failed %d aq_err=%x\n",
9115                                  ret, pf->hw.aq.asq_last_status);
9116                         kfree(aq_buf);
9117                         return -ENOENT;
9118                 }
9119
9120                 num_reported = le16_to_cpu(sw_config->header.num_reported);
9121                 num_total = le16_to_cpu(sw_config->header.num_total);
9122
9123                 if (printconfig)
9124                         dev_info(&pf->pdev->dev,
9125                                  "header: %d reported %d total\n",
9126                                  num_reported, num_total);
9127
9128                 for (i = 0; i < num_reported; i++) {
9129                         struct i40e_aqc_switch_config_element_resp *ele =
9130                                 &sw_config->element[i];
9131
9132                         i40e_setup_pf_switch_element(pf, ele, num_reported,
9133                                                      printconfig);
9134                 }
9135         } while (next_seid != 0);
9136
9137         kfree(aq_buf);
9138         return ret;
9139 }
9140
9141 /**
9142  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
9143  * @pf: board private structure
9144  * @reinit: if the Main VSI needs to re-initialized.
9145  *
9146  * Returns 0 on success, negative value on failure
9147  **/
9148 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
9149 {
9150         int ret;
9151
9152         /* find out what's out there already */
9153         ret = i40e_fetch_switch_configuration(pf, false);
9154         if (ret) {
9155                 dev_info(&pf->pdev->dev,
9156                          "couldn't fetch switch config, err %d, aq_err %d\n",
9157                          ret, pf->hw.aq.asq_last_status);
9158                 return ret;
9159         }
9160         i40e_pf_reset_stats(pf);
9161
9162         /* first time setup */
9163         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
9164                 struct i40e_vsi *vsi = NULL;
9165                 u16 uplink_seid;
9166
9167                 /* Set up the PF VSI associated with the PF's main VSI
9168                  * that is already in the HW switch
9169                  */
9170                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
9171                         uplink_seid = pf->veb[pf->lan_veb]->seid;
9172                 else
9173                         uplink_seid = pf->mac_seid;
9174                 if (pf->lan_vsi == I40E_NO_VSI)
9175                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
9176                 else if (reinit)
9177                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
9178                 if (!vsi) {
9179                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
9180                         i40e_fdir_teardown(pf);
9181                         return -EAGAIN;
9182                 }
9183         } else {
9184                 /* force a reset of TC and queue layout configurations */
9185                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
9186                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
9187                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
9188                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
9189         }
9190         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
9191
9192         i40e_fdir_sb_setup(pf);
9193
9194         /* Setup static PF queue filter control settings */
9195         ret = i40e_setup_pf_filter_control(pf);
9196         if (ret) {
9197                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
9198                          ret);
9199                 /* Failure here should not stop continuing other steps */
9200         }
9201
9202         /* enable RSS in the HW, even for only one queue, as the stack can use
9203          * the hash
9204          */
9205         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
9206                 i40e_config_rss(pf);
9207
9208         /* fill in link information and enable LSE reporting */
9209         i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
9210         i40e_link_event(pf);
9211
9212         /* Initialize user-specific link properties */
9213         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
9214                                   I40E_AQ_AN_COMPLETED) ? true : false);
9215
9216         /* fill in link information and enable LSE reporting */
9217         i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
9218         i40e_link_event(pf);
9219
9220         /* Initialize user-specific link properties */
9221         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
9222                                   I40E_AQ_AN_COMPLETED) ? true : false);
9223
9224         i40e_ptp_init(pf);
9225
9226         return ret;
9227 }
9228
9229 /**
9230  * i40e_determine_queue_usage - Work out queue distribution
9231  * @pf: board private structure
9232  **/
9233 static void i40e_determine_queue_usage(struct i40e_pf *pf)
9234 {
9235         int queues_left;
9236
9237         pf->num_lan_qps = 0;
9238 #ifdef I40E_FCOE
9239         pf->num_fcoe_qps = 0;
9240 #endif
9241
9242         /* Find the max queues to be put into basic use.  We'll always be
9243          * using TC0, whether or not DCB is running, and TC0 will get the
9244          * big RSS set.
9245          */
9246         queues_left = pf->hw.func_caps.num_tx_qp;
9247
9248         if ((queues_left == 1) ||
9249             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
9250                 /* one qp for PF, no queues for anything else */
9251                 queues_left = 0;
9252                 pf->rss_size = pf->num_lan_qps = 1;
9253
9254                 /* make sure all the fancies are disabled */
9255                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
9256 #ifdef I40E_FCOE
9257                                I40E_FLAG_FCOE_ENABLED   |
9258 #endif
9259                                I40E_FLAG_FD_SB_ENABLED  |
9260                                I40E_FLAG_FD_ATR_ENABLED |
9261                                I40E_FLAG_DCB_CAPABLE    |
9262                                I40E_FLAG_SRIOV_ENABLED  |
9263                                I40E_FLAG_VMDQ_ENABLED);
9264         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
9265                                   I40E_FLAG_FD_SB_ENABLED |
9266                                   I40E_FLAG_FD_ATR_ENABLED |
9267                                   I40E_FLAG_DCB_CAPABLE))) {
9268                 /* one qp for PF */
9269                 pf->rss_size = pf->num_lan_qps = 1;
9270                 queues_left -= pf->num_lan_qps;
9271
9272                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
9273 #ifdef I40E_FCOE
9274                                I40E_FLAG_FCOE_ENABLED   |
9275 #endif
9276                                I40E_FLAG_FD_SB_ENABLED  |
9277                                I40E_FLAG_FD_ATR_ENABLED |
9278                                I40E_FLAG_DCB_ENABLED    |
9279                                I40E_FLAG_VMDQ_ENABLED);
9280         } else {
9281                 /* Not enough queues for all TCs */
9282                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
9283                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
9284                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
9285                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
9286                 }
9287                 pf->num_lan_qps = max_t(int, pf->rss_size_max,
9288                                         num_online_cpus());
9289                 pf->num_lan_qps = min_t(int, pf->num_lan_qps,
9290                                         pf->hw.func_caps.num_tx_qp);
9291
9292                 queues_left -= pf->num_lan_qps;
9293         }
9294
9295 #ifdef I40E_FCOE
9296         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
9297                 if (I40E_DEFAULT_FCOE <= queues_left) {
9298                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
9299                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
9300                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
9301                 } else {
9302                         pf->num_fcoe_qps = 0;
9303                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
9304                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
9305                 }
9306
9307                 queues_left -= pf->num_fcoe_qps;
9308         }
9309
9310 #endif
9311         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
9312                 if (queues_left > 1) {
9313                         queues_left -= 1; /* save 1 queue for FD */
9314                 } else {
9315                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
9316                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
9317                 }
9318         }
9319
9320         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
9321             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
9322                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
9323                                         (queues_left / pf->num_vf_qps));
9324                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
9325         }
9326
9327         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
9328             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
9329                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
9330                                           (queues_left / pf->num_vmdq_qps));
9331                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
9332         }
9333
9334         pf->queues_left = queues_left;
9335 #ifdef I40E_FCOE
9336         dev_info(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
9337 #endif
9338 }
9339
9340 /**
9341  * i40e_setup_pf_filter_control - Setup PF static filter control
9342  * @pf: PF to be setup
9343  *
9344  * i40e_setup_pf_filter_control sets up a pf's initial filter control
9345  * settings. If PE/FCoE are enabled then it will also set the per PF
9346  * based filter sizes required for them. It also enables Flow director,
9347  * ethertype and macvlan type filter settings for the pf.
9348  *
9349  * Returns 0 on success, negative on failure
9350  **/
9351 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
9352 {
9353         struct i40e_filter_control_settings *settings = &pf->filter_settings;
9354
9355         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
9356
9357         /* Flow Director is enabled */
9358         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
9359                 settings->enable_fdir = true;
9360
9361         /* Ethtype and MACVLAN filters enabled for PF */
9362         settings->enable_ethtype = true;
9363         settings->enable_macvlan = true;
9364
9365         if (i40e_set_filter_control(&pf->hw, settings))
9366                 return -ENOENT;
9367
9368         return 0;
9369 }
9370
9371 #define INFO_STRING_LEN 255
9372 static void i40e_print_features(struct i40e_pf *pf)
9373 {
9374         struct i40e_hw *hw = &pf->hw;
9375         char *buf, *string;
9376
9377         string = kzalloc(INFO_STRING_LEN, GFP_KERNEL);
9378         if (!string) {
9379                 dev_err(&pf->pdev->dev, "Features string allocation failed\n");
9380                 return;
9381         }
9382
9383         buf = string;
9384
9385         buf += sprintf(string, "Features: PF-id[%d] ", hw->pf_id);
9386 #ifdef CONFIG_PCI_IOV
9387         buf += sprintf(buf, "VFs: %d ", pf->num_req_vfs);
9388 #endif
9389         buf += sprintf(buf, "VSIs: %d QP: %d RX: %s ",
9390                        pf->hw.func_caps.num_vsis,
9391                        pf->vsi[pf->lan_vsi]->num_queue_pairs,
9392                        pf->flags & I40E_FLAG_RX_PS_ENABLED ? "PS" : "1BUF");
9393
9394         if (pf->flags & I40E_FLAG_RSS_ENABLED)
9395                 buf += sprintf(buf, "RSS ");
9396         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
9397                 buf += sprintf(buf, "FD_ATR ");
9398         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
9399                 buf += sprintf(buf, "FD_SB ");
9400                 buf += sprintf(buf, "NTUPLE ");
9401         }
9402         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
9403                 buf += sprintf(buf, "DCB ");
9404         if (pf->flags & I40E_FLAG_PTP)
9405                 buf += sprintf(buf, "PTP ");
9406 #ifdef I40E_FCOE
9407         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
9408                 buf += sprintf(buf, "FCOE ");
9409 #endif
9410
9411         BUG_ON(buf > (string + INFO_STRING_LEN));
9412         dev_info(&pf->pdev->dev, "%s\n", string);
9413         kfree(string);
9414 }
9415
9416 /**
9417  * i40e_probe - Device initialization routine
9418  * @pdev: PCI device information struct
9419  * @ent: entry in i40e_pci_tbl
9420  *
9421  * i40e_probe initializes a pf identified by a pci_dev structure.
9422  * The OS initialization, configuring of the pf private structure,
9423  * and a hardware reset occur.
9424  *
9425  * Returns 0 on success, negative on failure
9426  **/
9427 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
9428 {
9429         struct i40e_aq_get_phy_abilities_resp abilities;
9430         struct i40e_pf *pf;
9431         struct i40e_hw *hw;
9432         static u16 pfs_found;
9433         u16 link_status;
9434         int err = 0;
9435         u32 len;
9436         u32 i;
9437
9438         err = pci_enable_device_mem(pdev);
9439         if (err)
9440                 return err;
9441
9442         /* set up for high or low dma */
9443         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
9444         if (err) {
9445                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
9446                 if (err) {
9447                         dev_err(&pdev->dev,
9448                                 "DMA configuration failed: 0x%x\n", err);
9449                         goto err_dma;
9450                 }
9451         }
9452
9453         /* set up pci connections */
9454         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
9455                                            IORESOURCE_MEM), i40e_driver_name);
9456         if (err) {
9457                 dev_info(&pdev->dev,
9458                          "pci_request_selected_regions failed %d\n", err);
9459                 goto err_pci_reg;
9460         }
9461
9462         pci_enable_pcie_error_reporting(pdev);
9463         pci_set_master(pdev);
9464
9465         /* Now that we have a PCI connection, we need to do the
9466          * low level device setup.  This is primarily setting up
9467          * the Admin Queue structures and then querying for the
9468          * device's current profile information.
9469          */
9470         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
9471         if (!pf) {
9472                 err = -ENOMEM;
9473                 goto err_pf_alloc;
9474         }
9475         pf->next_vsi = 0;
9476         pf->pdev = pdev;
9477         set_bit(__I40E_DOWN, &pf->state);
9478
9479         hw = &pf->hw;
9480         hw->back = pf;
9481         hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
9482                               pci_resource_len(pdev, 0));
9483         if (!hw->hw_addr) {
9484                 err = -EIO;
9485                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
9486                          (unsigned int)pci_resource_start(pdev, 0),
9487                          (unsigned int)pci_resource_len(pdev, 0), err);
9488                 goto err_ioremap;
9489         }
9490         hw->vendor_id = pdev->vendor;
9491         hw->device_id = pdev->device;
9492         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
9493         hw->subsystem_vendor_id = pdev->subsystem_vendor;
9494         hw->subsystem_device_id = pdev->subsystem_device;
9495         hw->bus.device = PCI_SLOT(pdev->devfn);
9496         hw->bus.func = PCI_FUNC(pdev->devfn);
9497         pf->instance = pfs_found;
9498
9499         if (debug != -1) {
9500                 pf->msg_enable = pf->hw.debug_mask;
9501                 pf->msg_enable = debug;
9502         }
9503
9504         /* do a special CORER for clearing PXE mode once at init */
9505         if (hw->revision_id == 0 &&
9506             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
9507                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
9508                 i40e_flush(hw);
9509                 msleep(200);
9510                 pf->corer_count++;
9511
9512                 i40e_clear_pxe_mode(hw);
9513         }
9514
9515         /* Reset here to make sure all is clean and to define PF 'n' */
9516         i40e_clear_hw(hw);
9517         err = i40e_pf_reset(hw);
9518         if (err) {
9519                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
9520                 goto err_pf_reset;
9521         }
9522         pf->pfr_count++;
9523
9524         hw->aq.num_arq_entries = I40E_AQ_LEN;
9525         hw->aq.num_asq_entries = I40E_AQ_LEN;
9526         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
9527         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
9528         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
9529
9530         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
9531                  "%s-%s:misc",
9532                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
9533
9534         err = i40e_init_shared_code(hw);
9535         if (err) {
9536                 dev_info(&pdev->dev, "init_shared_code failed: %d\n", err);
9537                 goto err_pf_reset;
9538         }
9539
9540         /* set up a default setting for link flow control */
9541         pf->hw.fc.requested_mode = I40E_FC_NONE;
9542
9543         err = i40e_init_adminq(hw);
9544         dev_info(&pdev->dev, "%s\n", i40e_fw_version_str(hw));
9545         if (err) {
9546                 dev_info(&pdev->dev,
9547                          "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");
9548                 goto err_pf_reset;
9549         }
9550
9551         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
9552             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
9553                 dev_info(&pdev->dev,
9554                          "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");
9555         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
9556                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
9557                 dev_info(&pdev->dev,
9558                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
9559
9560
9561         i40e_verify_eeprom(pf);
9562
9563         /* Rev 0 hardware was never productized */
9564         if (hw->revision_id < 1)
9565                 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");
9566
9567         i40e_clear_pxe_mode(hw);
9568         err = i40e_get_capabilities(pf);
9569         if (err)
9570                 goto err_adminq_setup;
9571
9572         err = i40e_sw_init(pf);
9573         if (err) {
9574                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
9575                 goto err_sw_init;
9576         }
9577
9578         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
9579                                 hw->func_caps.num_rx_qp,
9580                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
9581         if (err) {
9582                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
9583                 goto err_init_lan_hmc;
9584         }
9585
9586         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
9587         if (err) {
9588                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
9589                 err = -ENOENT;
9590                 goto err_configure_lan_hmc;
9591         }
9592
9593         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
9594          * Ignore error return codes because if it was already disabled via
9595          * hardware settings this will fail
9596          */
9597         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
9598             (pf->hw.aq.fw_maj_ver < 4)) {
9599                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
9600                 i40e_aq_stop_lldp(hw, true, NULL);
9601         }
9602
9603         i40e_get_mac_addr(hw, hw->mac.addr);
9604         if (!is_valid_ether_addr(hw->mac.addr)) {
9605                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
9606                 err = -EIO;
9607                 goto err_mac_addr;
9608         }
9609         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
9610         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
9611         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
9612         if (is_valid_ether_addr(hw->mac.port_addr))
9613                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
9614 #ifdef I40E_FCOE
9615         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
9616         if (err)
9617                 dev_info(&pdev->dev,
9618                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
9619         if (!is_valid_ether_addr(hw->mac.san_addr)) {
9620                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
9621                          hw->mac.san_addr);
9622                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
9623         }
9624         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
9625 #endif /* I40E_FCOE */
9626
9627         pci_set_drvdata(pdev, pf);
9628         pci_save_state(pdev);
9629 #ifdef CONFIG_I40E_DCB
9630         err = i40e_init_pf_dcb(pf);
9631         if (err) {
9632                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
9633                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
9634                 /* Continue without DCB enabled */
9635         }
9636 #endif /* CONFIG_I40E_DCB */
9637
9638         /* set up periodic task facility */
9639         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
9640         pf->service_timer_period = HZ;
9641
9642         INIT_WORK(&pf->service_task, i40e_service_task);
9643         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
9644         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
9645         pf->link_check_timeout = jiffies;
9646
9647         /* WoL defaults to disabled */
9648         pf->wol_en = false;
9649         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
9650
9651         /* set up the main switch operations */
9652         i40e_determine_queue_usage(pf);
9653         i40e_init_interrupt_scheme(pf);
9654
9655         /* The number of VSIs reported by the FW is the minimum guaranteed
9656          * to us; HW supports far more and we share the remaining pool with
9657          * the other PFs. We allocate space for more than the guarantee with
9658          * the understanding that we might not get them all later.
9659          */
9660         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
9661                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
9662         else
9663                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
9664
9665         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
9666         len = sizeof(struct i40e_vsi *) * pf->num_alloc_vsi;
9667         pf->vsi = kzalloc(len, GFP_KERNEL);
9668         if (!pf->vsi) {
9669                 err = -ENOMEM;
9670                 goto err_switch_setup;
9671         }
9672
9673         err = i40e_setup_pf_switch(pf, false);
9674         if (err) {
9675                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
9676                 goto err_vsis;
9677         }
9678         /* if FDIR VSI was set up, start it now */
9679         for (i = 0; i < pf->num_alloc_vsi; i++) {
9680                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
9681                         i40e_vsi_open(pf->vsi[i]);
9682                         break;
9683                 }
9684         }
9685
9686         /* driver is only interested in link up/down and module qualification
9687          * reports from firmware
9688          */
9689         err = i40e_aq_set_phy_int_mask(&pf->hw,
9690                                        I40E_AQ_EVENT_LINK_UPDOWN |
9691                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
9692         if (err)
9693                 dev_info(&pf->pdev->dev, "set phy mask fail, aq_err %d\n", err);
9694
9695         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
9696             (pf->hw.aq.fw_maj_ver < 4)) {
9697                 msleep(75);
9698                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
9699                 if (err)
9700                         dev_info(&pf->pdev->dev, "link restart failed, aq_err=%d\n",
9701                                  pf->hw.aq.asq_last_status);
9702         }
9703         /* The main driver is (mostly) up and happy. We need to set this state
9704          * before setting up the misc vector or we get a race and the vector
9705          * ends up disabled forever.
9706          */
9707         clear_bit(__I40E_DOWN, &pf->state);
9708
9709         /* In case of MSIX we are going to setup the misc vector right here
9710          * to handle admin queue events etc. In case of legacy and MSI
9711          * the misc functionality and queue processing is combined in
9712          * the same vector and that gets setup at open.
9713          */
9714         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
9715                 err = i40e_setup_misc_vector(pf);
9716                 if (err) {
9717                         dev_info(&pdev->dev,
9718                                  "setup of misc vector failed: %d\n", err);
9719                         goto err_vsis;
9720                 }
9721         }
9722
9723 #ifdef CONFIG_PCI_IOV
9724         /* prep for VF support */
9725         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
9726             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
9727             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
9728                 u32 val;
9729
9730                 /* disable link interrupts for VFs */
9731                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
9732                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
9733                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
9734                 i40e_flush(hw);
9735
9736                 if (pci_num_vf(pdev)) {
9737                         dev_info(&pdev->dev,
9738                                  "Active VFs found, allocating resources.\n");
9739                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
9740                         if (err)
9741                                 dev_info(&pdev->dev,
9742                                          "Error %d allocating resources for existing VFs\n",
9743                                          err);
9744                 }
9745         }
9746 #endif /* CONFIG_PCI_IOV */
9747
9748         pfs_found++;
9749
9750         i40e_dbg_pf_init(pf);
9751
9752         /* tell the firmware that we're starting */
9753         i40e_send_version(pf);
9754
9755         /* since everything's happy, start the service_task timer */
9756         mod_timer(&pf->service_timer,
9757                   round_jiffies(jiffies + pf->service_timer_period));
9758
9759 #ifdef I40E_FCOE
9760         /* create FCoE interface */
9761         i40e_fcoe_vsi_setup(pf);
9762
9763 #endif
9764         /* Get the negotiated link width and speed from PCI config space */
9765         pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA, &link_status);
9766
9767         i40e_set_pci_config_data(hw, link_status);
9768
9769         dev_info(&pdev->dev, "PCI-Express: %s %s\n",
9770                 (hw->bus.speed == i40e_bus_speed_8000 ? "Speed 8.0GT/s" :
9771                  hw->bus.speed == i40e_bus_speed_5000 ? "Speed 5.0GT/s" :
9772                  hw->bus.speed == i40e_bus_speed_2500 ? "Speed 2.5GT/s" :
9773                  "Unknown"),
9774                 (hw->bus.width == i40e_bus_width_pcie_x8 ? "Width x8" :
9775                  hw->bus.width == i40e_bus_width_pcie_x4 ? "Width x4" :
9776                  hw->bus.width == i40e_bus_width_pcie_x2 ? "Width x2" :
9777                  hw->bus.width == i40e_bus_width_pcie_x1 ? "Width x1" :
9778                  "Unknown"));
9779
9780         if (hw->bus.width < i40e_bus_width_pcie_x8 ||
9781             hw->bus.speed < i40e_bus_speed_8000) {
9782                 dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
9783                 dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
9784         }
9785
9786         /* get the requested speeds from the fw */
9787         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
9788         if (err)
9789                 dev_info(&pf->pdev->dev, "get phy abilities failed, aq_err %d, advertised speed settings may not be correct\n",
9790                          err);
9791         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
9792
9793         /* print a string summarizing features */
9794         i40e_print_features(pf);
9795
9796         return 0;
9797
9798         /* Unwind what we've done if something failed in the setup */
9799 err_vsis:
9800         set_bit(__I40E_DOWN, &pf->state);
9801         i40e_clear_interrupt_scheme(pf);
9802         kfree(pf->vsi);
9803 err_switch_setup:
9804         i40e_reset_interrupt_capability(pf);
9805         del_timer_sync(&pf->service_timer);
9806 err_mac_addr:
9807 err_configure_lan_hmc:
9808         (void)i40e_shutdown_lan_hmc(hw);
9809 err_init_lan_hmc:
9810         kfree(pf->qp_pile);
9811         kfree(pf->irq_pile);
9812 err_sw_init:
9813 err_adminq_setup:
9814         (void)i40e_shutdown_adminq(hw);
9815 err_pf_reset:
9816         iounmap(hw->hw_addr);
9817 err_ioremap:
9818         kfree(pf);
9819 err_pf_alloc:
9820         pci_disable_pcie_error_reporting(pdev);
9821         pci_release_selected_regions(pdev,
9822                                      pci_select_bars(pdev, IORESOURCE_MEM));
9823 err_pci_reg:
9824 err_dma:
9825         pci_disable_device(pdev);
9826         return err;
9827 }
9828
9829 /**
9830  * i40e_remove - Device removal routine
9831  * @pdev: PCI device information struct
9832  *
9833  * i40e_remove is called by the PCI subsystem to alert the driver
9834  * that is should release a PCI device.  This could be caused by a
9835  * Hot-Plug event, or because the driver is going to be removed from
9836  * memory.
9837  **/
9838 static void i40e_remove(struct pci_dev *pdev)
9839 {
9840         struct i40e_pf *pf = pci_get_drvdata(pdev);
9841         i40e_status ret_code;
9842         int i;
9843
9844         i40e_dbg_pf_exit(pf);
9845
9846         i40e_ptp_stop(pf);
9847
9848         /* no more scheduling of any task */
9849         set_bit(__I40E_DOWN, &pf->state);
9850         del_timer_sync(&pf->service_timer);
9851         cancel_work_sync(&pf->service_task);
9852
9853         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
9854                 i40e_free_vfs(pf);
9855                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
9856         }
9857
9858         i40e_fdir_teardown(pf);
9859
9860         /* If there is a switch structure or any orphans, remove them.
9861          * This will leave only the PF's VSI remaining.
9862          */
9863         for (i = 0; i < I40E_MAX_VEB; i++) {
9864                 if (!pf->veb[i])
9865                         continue;
9866
9867                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
9868                     pf->veb[i]->uplink_seid == 0)
9869                         i40e_switch_branch_release(pf->veb[i]);
9870         }
9871
9872         /* Now we can shutdown the PF's VSI, just before we kill
9873          * adminq and hmc.
9874          */
9875         if (pf->vsi[pf->lan_vsi])
9876                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
9877
9878         i40e_stop_misc_vector(pf);
9879         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
9880                 synchronize_irq(pf->msix_entries[0].vector);
9881                 free_irq(pf->msix_entries[0].vector, pf);
9882         }
9883
9884         /* shutdown and destroy the HMC */
9885         if (pf->hw.hmc.hmc_obj) {
9886                 ret_code = i40e_shutdown_lan_hmc(&pf->hw);
9887                 if (ret_code)
9888                         dev_warn(&pdev->dev,
9889                                  "Failed to destroy the HMC resources: %d\n",
9890                                  ret_code);
9891         }
9892
9893         /* shutdown the adminq */
9894         ret_code = i40e_shutdown_adminq(&pf->hw);
9895         if (ret_code)
9896                 dev_warn(&pdev->dev,
9897                          "Failed to destroy the Admin Queue resources: %d\n",
9898                          ret_code);
9899
9900         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
9901         i40e_clear_interrupt_scheme(pf);
9902         for (i = 0; i < pf->num_alloc_vsi; i++) {
9903                 if (pf->vsi[i]) {
9904                         i40e_vsi_clear_rings(pf->vsi[i]);
9905                         i40e_vsi_clear(pf->vsi[i]);
9906                         pf->vsi[i] = NULL;
9907                 }
9908         }
9909
9910         for (i = 0; i < I40E_MAX_VEB; i++) {
9911                 kfree(pf->veb[i]);
9912                 pf->veb[i] = NULL;
9913         }
9914
9915         kfree(pf->qp_pile);
9916         kfree(pf->irq_pile);
9917         kfree(pf->vsi);
9918
9919         iounmap(pf->hw.hw_addr);
9920         kfree(pf);
9921         pci_release_selected_regions(pdev,
9922                                      pci_select_bars(pdev, IORESOURCE_MEM));
9923
9924         pci_disable_pcie_error_reporting(pdev);
9925         pci_disable_device(pdev);
9926 }
9927
9928 /**
9929  * i40e_pci_error_detected - warning that something funky happened in PCI land
9930  * @pdev: PCI device information struct
9931  *
9932  * Called to warn that something happened and the error handling steps
9933  * are in progress.  Allows the driver to quiesce things, be ready for
9934  * remediation.
9935  **/
9936 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
9937                                                 enum pci_channel_state error)
9938 {
9939         struct i40e_pf *pf = pci_get_drvdata(pdev);
9940
9941         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
9942
9943         /* shutdown all operations */
9944         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
9945                 rtnl_lock();
9946                 i40e_prep_for_reset(pf);
9947                 rtnl_unlock();
9948         }
9949
9950         /* Request a slot reset */
9951         return PCI_ERS_RESULT_NEED_RESET;
9952 }
9953
9954 /**
9955  * i40e_pci_error_slot_reset - a PCI slot reset just happened
9956  * @pdev: PCI device information struct
9957  *
9958  * Called to find if the driver can work with the device now that
9959  * the pci slot has been reset.  If a basic connection seems good
9960  * (registers are readable and have sane content) then return a
9961  * happy little PCI_ERS_RESULT_xxx.
9962  **/
9963 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
9964 {
9965         struct i40e_pf *pf = pci_get_drvdata(pdev);
9966         pci_ers_result_t result;
9967         int err;
9968         u32 reg;
9969
9970         dev_info(&pdev->dev, "%s\n", __func__);
9971         if (pci_enable_device_mem(pdev)) {
9972                 dev_info(&pdev->dev,
9973                          "Cannot re-enable PCI device after reset.\n");
9974                 result = PCI_ERS_RESULT_DISCONNECT;
9975         } else {
9976                 pci_set_master(pdev);
9977                 pci_restore_state(pdev);
9978                 pci_save_state(pdev);
9979                 pci_wake_from_d3(pdev, false);
9980
9981                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
9982                 if (reg == 0)
9983                         result = PCI_ERS_RESULT_RECOVERED;
9984                 else
9985                         result = PCI_ERS_RESULT_DISCONNECT;
9986         }
9987
9988         err = pci_cleanup_aer_uncorrect_error_status(pdev);
9989         if (err) {
9990                 dev_info(&pdev->dev,
9991                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
9992                          err);
9993                 /* non-fatal, continue */
9994         }
9995
9996         return result;
9997 }
9998
9999 /**
10000  * i40e_pci_error_resume - restart operations after PCI error recovery
10001  * @pdev: PCI device information struct
10002  *
10003  * Called to allow the driver to bring things back up after PCI error
10004  * and/or reset recovery has finished.
10005  **/
10006 static void i40e_pci_error_resume(struct pci_dev *pdev)
10007 {
10008         struct i40e_pf *pf = pci_get_drvdata(pdev);
10009
10010         dev_info(&pdev->dev, "%s\n", __func__);
10011         if (test_bit(__I40E_SUSPENDED, &pf->state))
10012                 return;
10013
10014         rtnl_lock();
10015         i40e_handle_reset_warning(pf);
10016         rtnl_lock();
10017 }
10018
10019 /**
10020  * i40e_shutdown - PCI callback for shutting down
10021  * @pdev: PCI device information struct
10022  **/
10023 static void i40e_shutdown(struct pci_dev *pdev)
10024 {
10025         struct i40e_pf *pf = pci_get_drvdata(pdev);
10026         struct i40e_hw *hw = &pf->hw;
10027
10028         set_bit(__I40E_SUSPENDED, &pf->state);
10029         set_bit(__I40E_DOWN, &pf->state);
10030         rtnl_lock();
10031         i40e_prep_for_reset(pf);
10032         rtnl_unlock();
10033
10034         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10035         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10036
10037         if (system_state == SYSTEM_POWER_OFF) {
10038                 pci_wake_from_d3(pdev, pf->wol_en);
10039                 pci_set_power_state(pdev, PCI_D3hot);
10040         }
10041 }
10042
10043 #ifdef CONFIG_PM
10044 /**
10045  * i40e_suspend - PCI callback for moving to D3
10046  * @pdev: PCI device information struct
10047  **/
10048 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
10049 {
10050         struct i40e_pf *pf = pci_get_drvdata(pdev);
10051         struct i40e_hw *hw = &pf->hw;
10052
10053         set_bit(__I40E_SUSPENDED, &pf->state);
10054         set_bit(__I40E_DOWN, &pf->state);
10055         del_timer_sync(&pf->service_timer);
10056         cancel_work_sync(&pf->service_task);
10057         rtnl_lock();
10058         i40e_prep_for_reset(pf);
10059         rtnl_unlock();
10060
10061         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10062         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10063
10064         pci_wake_from_d3(pdev, pf->wol_en);
10065         pci_set_power_state(pdev, PCI_D3hot);
10066
10067         return 0;
10068 }
10069
10070 /**
10071  * i40e_resume - PCI callback for waking up from D3
10072  * @pdev: PCI device information struct
10073  **/
10074 static int i40e_resume(struct pci_dev *pdev)
10075 {
10076         struct i40e_pf *pf = pci_get_drvdata(pdev);
10077         u32 err;
10078
10079         pci_set_power_state(pdev, PCI_D0);
10080         pci_restore_state(pdev);
10081         /* pci_restore_state() clears dev->state_saves, so
10082          * call pci_save_state() again to restore it.
10083          */
10084         pci_save_state(pdev);
10085
10086         err = pci_enable_device_mem(pdev);
10087         if (err) {
10088                 dev_err(&pdev->dev,
10089                         "%s: Cannot enable PCI device from suspend\n",
10090                         __func__);
10091                 return err;
10092         }
10093         pci_set_master(pdev);
10094
10095         /* no wakeup events while running */
10096         pci_wake_from_d3(pdev, false);
10097
10098         /* handling the reset will rebuild the device state */
10099         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
10100                 clear_bit(__I40E_DOWN, &pf->state);
10101                 rtnl_lock();
10102                 i40e_reset_and_rebuild(pf, false);
10103                 rtnl_unlock();
10104         }
10105
10106         return 0;
10107 }
10108
10109 #endif
10110 static const struct pci_error_handlers i40e_err_handler = {
10111         .error_detected = i40e_pci_error_detected,
10112         .slot_reset = i40e_pci_error_slot_reset,
10113         .resume = i40e_pci_error_resume,
10114 };
10115
10116 static struct pci_driver i40e_driver = {
10117         .name     = i40e_driver_name,
10118         .id_table = i40e_pci_tbl,
10119         .probe    = i40e_probe,
10120         .remove   = i40e_remove,
10121 #ifdef CONFIG_PM
10122         .suspend  = i40e_suspend,
10123         .resume   = i40e_resume,
10124 #endif
10125         .shutdown = i40e_shutdown,
10126         .err_handler = &i40e_err_handler,
10127         .sriov_configure = i40e_pci_sriov_configure,
10128 };
10129
10130 /**
10131  * i40e_init_module - Driver registration routine
10132  *
10133  * i40e_init_module is the first routine called when the driver is
10134  * loaded. All it does is register with the PCI subsystem.
10135  **/
10136 static int __init i40e_init_module(void)
10137 {
10138         pr_info("%s: %s - version %s\n", i40e_driver_name,
10139                 i40e_driver_string, i40e_driver_version_str);
10140         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
10141
10142 #if IS_ENABLED(CONFIG_I40E_CONFIGFS_FS)
10143         i40e_configfs_init();
10144 #endif /* CONFIG_I40E_CONFIGFS_FS */
10145         i40e_dbg_init();
10146         return pci_register_driver(&i40e_driver);
10147 }
10148 module_init(i40e_init_module);
10149
10150 /**
10151  * i40e_exit_module - Driver exit cleanup routine
10152  *
10153  * i40e_exit_module is called just before the driver is removed
10154  * from memory.
10155  **/
10156 static void __exit i40e_exit_module(void)
10157 {
10158         pci_unregister_driver(&i40e_driver);
10159         i40e_dbg_exit();
10160 #if IS_ENABLED(CONFIG_I40E_CONFIGFS_FS)
10161         i40e_configfs_exit();
10162 #endif /* CONFIG_I40E_CONFIGFS_FS */
10163 }
10164 module_exit(i40e_exit_module);