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

   1 /*******************************************************************************
   2  *
   3  * Intel Ethernet Controller XL710 Family Linux Driver
   4  * Copyright(c) 2013 - 2014 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 0
  42 #define DRV_VERSION_BUILD 21
  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_update32(hw, I40E_GLPRT_TDPC(hw->port),
 923                            pf->stat_offsets_loaded,
 924                            &osd->eth.tx_discards,
 925                            &nsd->eth.tx_discards);
 926
 927         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 928                            I40E_GLPRT_UPRCL(hw->port),
 929                            pf->stat_offsets_loaded,
 930                            &osd->eth.rx_unicast,
 931                            &nsd->eth.rx_unicast);
 932         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 933                            I40E_GLPRT_MPRCL(hw->port),
 934                            pf->stat_offsets_loaded,
 935                            &osd->eth.rx_multicast,
 936                            &nsd->eth.rx_multicast);
 937         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
 938                            I40E_GLPRT_BPRCL(hw->port),
 939                            pf->stat_offsets_loaded,
 940                            &osd->eth.rx_broadcast,
 941                            &nsd->eth.rx_broadcast);
 942         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
 943                            I40E_GLPRT_UPTCL(hw->port),
 944                            pf->stat_offsets_loaded,
 945                            &osd->eth.tx_unicast,
 946                            &nsd->eth.tx_unicast);
 947         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
 948                            I40E_GLPRT_MPTCL(hw->port),
 949                            pf->stat_offsets_loaded,
 950                            &osd->eth.tx_multicast,
 951                            &nsd->eth.tx_multicast);
 952         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
 953                            I40E_GLPRT_BPTCL(hw->port),
 954                            pf->stat_offsets_loaded,
 955                            &osd->eth.tx_broadcast,
 956                            &nsd->eth.tx_broadcast);
 957
 958         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
 959                            pf->stat_offsets_loaded,
 960                            &osd->tx_dropped_link_down,
 961                            &nsd->tx_dropped_link_down);
 962
 963         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
 964                            pf->stat_offsets_loaded,
 965                            &osd->crc_errors, &nsd->crc_errors);
 966
 967         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
 968                            pf->stat_offsets_loaded,
 969                            &osd->illegal_bytes, &nsd->illegal_bytes);
 970
 971         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
 972                            pf->stat_offsets_loaded,
 973                            &osd->mac_local_faults,
 974                            &nsd->mac_local_faults);
 975         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
 976                            pf->stat_offsets_loaded,
 977                            &osd->mac_remote_faults,
 978                            &nsd->mac_remote_faults);
 979
 980         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
 981                            pf->stat_offsets_loaded,
 982                            &osd->rx_length_errors,
 983                            &nsd->rx_length_errors);
 984
 985         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
 986                            pf->stat_offsets_loaded,
 987                            &osd->link_xon_rx, &nsd->link_xon_rx);
 988         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
 989                            pf->stat_offsets_loaded,
 990                            &osd->link_xon_tx, &nsd->link_xon_tx);
 991         i40e_update_prio_xoff_rx(pf);  /* handles I40E_GLPRT_LXOFFRXC */
 992         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
 993                            pf->stat_offsets_loaded,
 994                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
 995
 996         for (i = 0; i < 8; i++) {
 997                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
 998                                    pf->stat_offsets_loaded,
 999                                    &osd->priority_xon_rx[i],
1000                                    &nsd->priority_xon_rx[i]);
1001                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
1002                                    pf->stat_offsets_loaded,
1003                                    &osd->priority_xon_tx[i],
1004                                    &nsd->priority_xon_tx[i]);
1005                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
1006                                    pf->stat_offsets_loaded,
1007                                    &osd->priority_xoff_tx[i],
1008                                    &nsd->priority_xoff_tx[i]);
1009                 i40e_stat_update32(hw,
1010                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
1011                                    pf->stat_offsets_loaded,
1012                                    &osd->priority_xon_2_xoff[i],
1013                                    &nsd->priority_xon_2_xoff[i]);
1014         }
1015
1016         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
1017                            I40E_GLPRT_PRC64L(hw->port),
1018                            pf->stat_offsets_loaded,
1019                            &osd->rx_size_64, &nsd->rx_size_64);
1020         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
1021                            I40E_GLPRT_PRC127L(hw->port),
1022                            pf->stat_offsets_loaded,
1023                            &osd->rx_size_127, &nsd->rx_size_127);
1024         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
1025                            I40E_GLPRT_PRC255L(hw->port),
1026                            pf->stat_offsets_loaded,
1027                            &osd->rx_size_255, &nsd->rx_size_255);
1028         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
1029                            I40E_GLPRT_PRC511L(hw->port),
1030                            pf->stat_offsets_loaded,
1031                            &osd->rx_size_511, &nsd->rx_size_511);
1032         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
1033                            I40E_GLPRT_PRC1023L(hw->port),
1034                            pf->stat_offsets_loaded,
1035                            &osd->rx_size_1023, &nsd->rx_size_1023);
1036         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
1037                            I40E_GLPRT_PRC1522L(hw->port),
1038                            pf->stat_offsets_loaded,
1039                            &osd->rx_size_1522, &nsd->rx_size_1522);
1040         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
1041                            I40E_GLPRT_PRC9522L(hw->port),
1042                            pf->stat_offsets_loaded,
1043                            &osd->rx_size_big, &nsd->rx_size_big);
1044
1045         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
1046                            I40E_GLPRT_PTC64L(hw->port),
1047                            pf->stat_offsets_loaded,
1048                            &osd->tx_size_64, &nsd->tx_size_64);
1049         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
1050                            I40E_GLPRT_PTC127L(hw->port),
1051                            pf->stat_offsets_loaded,
1052                            &osd->tx_size_127, &nsd->tx_size_127);
1053         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
1054                            I40E_GLPRT_PTC255L(hw->port),
1055                            pf->stat_offsets_loaded,
1056                            &osd->tx_size_255, &nsd->tx_size_255);
1057         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
1058                            I40E_GLPRT_PTC511L(hw->port),
1059                            pf->stat_offsets_loaded,
1060                            &osd->tx_size_511, &nsd->tx_size_511);
1061         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1062                            I40E_GLPRT_PTC1023L(hw->port),
1063                            pf->stat_offsets_loaded,
1064                            &osd->tx_size_1023, &nsd->tx_size_1023);
1065         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1066                            I40E_GLPRT_PTC1522L(hw->port),
1067                            pf->stat_offsets_loaded,
1068                            &osd->tx_size_1522, &nsd->tx_size_1522);
1069         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1070                            I40E_GLPRT_PTC9522L(hw->port),
1071                            pf->stat_offsets_loaded,
1072                            &osd->tx_size_big, &nsd->tx_size_big);
1073
1074         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1075                            pf->stat_offsets_loaded,
1076                            &osd->rx_undersize, &nsd->rx_undersize);
1077         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1078                            pf->stat_offsets_loaded,
1079                            &osd->rx_fragments, &nsd->rx_fragments);
1080         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1081                            pf->stat_offsets_loaded,
1082                            &osd->rx_oversize, &nsd->rx_oversize);
1083         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1084                            pf->stat_offsets_loaded,
1085                            &osd->rx_jabber, &nsd->rx_jabber);
1086
1087         /* FDIR stats */
1088         i40e_stat_update32(hw, I40E_GLQF_PCNT(pf->fd_atr_cnt_idx),
1089                            pf->stat_offsets_loaded,
1090                            &osd->fd_atr_match, &nsd->fd_atr_match);
1091         i40e_stat_update32(hw, I40E_GLQF_PCNT(pf->fd_sb_cnt_idx),
1092                            pf->stat_offsets_loaded,
1093                            &osd->fd_sb_match, &nsd->fd_sb_match);
1094
1095         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1096         nsd->tx_lpi_status =
1097                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1098                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1099         nsd->rx_lpi_status =
1100                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1101                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1102         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1103                            pf->stat_offsets_loaded,
1104                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1105         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1106                            pf->stat_offsets_loaded,
1107                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1108
1109         pf->stat_offsets_loaded = true;
1110 }
1111
1112 /**
1113  * i40e_update_stats - Update the various statistics counters.
1114  * @vsi: the VSI to be updated
1115  *
1116  * Update the various stats for this VSI and its related entities.
1117  **/
1118 void i40e_update_stats(struct i40e_vsi *vsi)
1119 {
1120         struct i40e_pf *pf = vsi->back;
1121
1122         if (vsi == pf->vsi[pf->lan_vsi])
1123                 i40e_update_pf_stats(pf);
1124
1125         i40e_update_vsi_stats(vsi);
1126 #ifdef I40E_FCOE
1127         i40e_update_fcoe_stats(vsi);
1128 #endif
1129 }
1130
1131 /**
1132  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1133  * @vsi: the VSI to be searched
1134  * @macaddr: the MAC address
1135  * @vlan: the vlan
1136  * @is_vf: make sure its a vf filter, else doesn't matter
1137  * @is_netdev: make sure its a netdev filter, else doesn't matter
1138  *
1139  * Returns ptr to the filter object or NULL
1140  **/
1141 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1142                                                 u8 *macaddr, s16 vlan,
1143                                                 bool is_vf, bool is_netdev)
1144 {
1145         struct i40e_mac_filter *f;
1146
1147         if (!vsi || !macaddr)
1148                 return NULL;
1149
1150         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1151                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1152                     (vlan == f->vlan)    &&
1153                     (!is_vf || f->is_vf) &&
1154                     (!is_netdev || f->is_netdev))
1155                         return f;
1156         }
1157         return NULL;
1158 }
1159
1160 /**
1161  * i40e_find_mac - Find a mac addr in the macvlan filters list
1162  * @vsi: the VSI to be searched
1163  * @macaddr: the MAC address we are searching for
1164  * @is_vf: make sure its a vf filter, else doesn't matter
1165  * @is_netdev: make sure its a netdev filter, else doesn't matter
1166  *
1167  * Returns the first filter with the provided MAC address or NULL if
1168  * MAC address was not found
1169  **/
1170 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1171                                       bool is_vf, bool is_netdev)
1172 {
1173         struct i40e_mac_filter *f;
1174
1175         if (!vsi || !macaddr)
1176                 return NULL;
1177
1178         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1179                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1180                     (!is_vf || f->is_vf) &&
1181                     (!is_netdev || f->is_netdev))
1182                         return f;
1183         }
1184         return NULL;
1185 }
1186
1187 /**
1188  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1189  * @vsi: the VSI to be searched
1190  *
1191  * Returns true if VSI is in vlan mode or false otherwise
1192  **/
1193 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1194 {
1195         struct i40e_mac_filter *f;
1196
1197         /* Only -1 for all the filters denotes not in vlan mode
1198          * so we have to go through all the list in order to make sure
1199          */
1200         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1201                 if (f->vlan >= 0)
1202                         return true;
1203         }
1204
1205         return false;
1206 }
1207
1208 /**
1209  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1210  * @vsi: the VSI to be searched
1211  * @macaddr: the mac address to be filtered
1212  * @is_vf: true if it is a vf
1213  * @is_netdev: true if it is a netdev
1214  *
1215  * Goes through all the macvlan filters and adds a
1216  * macvlan filter for each unique vlan that already exists
1217  *
1218  * Returns first filter found on success, else NULL
1219  **/
1220 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1221                                              bool is_vf, bool is_netdev)
1222 {
1223         struct i40e_mac_filter *f;
1224
1225         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1226                 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1227                                       is_vf, is_netdev)) {
1228                         if (!i40e_add_filter(vsi, macaddr, f->vlan,
1229                                              is_vf, is_netdev))
1230                                 return NULL;
1231                 }
1232         }
1233
1234         return list_first_entry_or_null(&vsi->mac_filter_list,
1235                                         struct i40e_mac_filter, list);
1236 }
1237
1238 /**
1239  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1240  * @vsi: the PF Main VSI - inappropriate for any other VSI
1241  * @macaddr: the MAC address
1242  *
1243  * Some older firmware configurations set up a default promiscuous VLAN
1244  * filter that needs to be removed.
1245  **/
1246 static int i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1247 {
1248         struct i40e_aqc_remove_macvlan_element_data element;
1249         struct i40e_pf *pf = vsi->back;
1250         i40e_status aq_ret;
1251
1252         /* Only appropriate for the PF main VSI */
1253         if (vsi->type != I40E_VSI_MAIN)
1254                 return -EINVAL;
1255
1256         memset(&element, 0, sizeof(element));
1257         ether_addr_copy(element.mac_addr, macaddr);
1258         element.vlan_tag = 0;
1259         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1260                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1261         aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1262         if (aq_ret)
1263                 return -ENOENT;
1264
1265         return 0;
1266 }
1267
1268 /**
1269  * i40e_add_filter - Add a mac/vlan filter to the VSI
1270  * @vsi: the VSI to be searched
1271  * @macaddr: the MAC address
1272  * @vlan: the vlan
1273  * @is_vf: make sure its a vf filter, else doesn't matter
1274  * @is_netdev: make sure its a netdev filter, else doesn't matter
1275  *
1276  * Returns ptr to the filter object or NULL when no memory available.
1277  **/
1278 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1279                                         u8 *macaddr, s16 vlan,
1280                                         bool is_vf, bool is_netdev)
1281 {
1282         struct i40e_mac_filter *f;
1283
1284         if (!vsi || !macaddr)
1285                 return NULL;
1286
1287         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1288         if (!f) {
1289                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1290                 if (!f)
1291                         goto add_filter_out;
1292
1293                 ether_addr_copy(f->macaddr, macaddr);
1294                 f->vlan = vlan;
1295                 f->changed = true;
1296
1297                 INIT_LIST_HEAD(&f->list);
1298                 list_add(&f->list, &vsi->mac_filter_list);
1299         }
1300
1301         /* increment counter and add a new flag if needed */
1302         if (is_vf) {
1303                 if (!f->is_vf) {
1304                         f->is_vf = true;
1305                         f->counter++;
1306                 }
1307         } else if (is_netdev) {
1308                 if (!f->is_netdev) {
1309                         f->is_netdev = true;
1310                         f->counter++;
1311                 }
1312         } else {
1313                 f->counter++;
1314         }
1315
1316         /* changed tells sync_filters_subtask to
1317          * push the filter down to the firmware
1318          */
1319         if (f->changed) {
1320                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1321                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1322         }
1323
1324 add_filter_out:
1325         return f;
1326 }
1327
1328 /**
1329  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1330  * @vsi: the VSI to be searched
1331  * @macaddr: the MAC address
1332  * @vlan: the vlan
1333  * @is_vf: make sure it's a vf filter, else doesn't matter
1334  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1335  **/
1336 void i40e_del_filter(struct i40e_vsi *vsi,
1337                      u8 *macaddr, s16 vlan,
1338                      bool is_vf, bool is_netdev)
1339 {
1340         struct i40e_mac_filter *f;
1341
1342         if (!vsi || !macaddr)
1343                 return;
1344
1345         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1346         if (!f || f->counter == 0)
1347                 return;
1348
1349         if (is_vf) {
1350                 if (f->is_vf) {
1351                         f->is_vf = false;
1352                         f->counter--;
1353                 }
1354         } else if (is_netdev) {
1355                 if (f->is_netdev) {
1356                         f->is_netdev = false;
1357                         f->counter--;
1358                 }
1359         } else {
1360                 /* make sure we don't remove a filter in use by vf or netdev */
1361                 int min_f = 0;
1362                 min_f += (f->is_vf ? 1 : 0);
1363                 min_f += (f->is_netdev ? 1 : 0);
1364
1365                 if (f->counter > min_f)
1366                         f->counter--;
1367         }
1368
1369         /* counter == 0 tells sync_filters_subtask to
1370          * remove the filter from the firmware's list
1371          */
1372         if (f->counter == 0) {
1373                 f->changed = true;
1374                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1375                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1376         }
1377 }
1378
1379 /**
1380  * i40e_set_mac - NDO callback to set mac address
1381  * @netdev: network interface device structure
1382  * @p: pointer to an address structure
1383  *
1384  * Returns 0 on success, negative on failure
1385  **/
1386 #ifdef I40E_FCOE
1387 int i40e_set_mac(struct net_device *netdev, void *p)
1388 #else
1389 static int i40e_set_mac(struct net_device *netdev, void *p)
1390 #endif
1391 {
1392         struct i40e_netdev_priv *np = netdev_priv(netdev);
1393         struct i40e_vsi *vsi = np->vsi;
1394         struct i40e_pf *pf = vsi->back;
1395         struct i40e_hw *hw = &pf->hw;
1396         struct sockaddr *addr = p;
1397         struct i40e_mac_filter *f;
1398
1399         if (!is_valid_ether_addr(addr->sa_data))
1400                 return -EADDRNOTAVAIL;
1401
1402         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1403                 netdev_info(netdev, "already using mac address %pM\n",
1404                             addr->sa_data);
1405                 return 0;
1406         }
1407
1408         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1409             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1410                 return -EADDRNOTAVAIL;
1411
1412         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1413                 netdev_info(netdev, "returning to hw mac address %pM\n",
1414                             hw->mac.addr);
1415         else
1416                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1417
1418         if (vsi->type == I40E_VSI_MAIN) {
1419                 i40e_status ret;
1420                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1421                                                 I40E_AQC_WRITE_TYPE_LAA_WOL,
1422                                                 addr->sa_data, NULL);
1423                 if (ret) {
1424                         netdev_info(netdev,
1425                                     "Addr change for Main VSI failed: %d\n",
1426                                     ret);
1427                         return -EADDRNOTAVAIL;
1428                 }
1429         }
1430
1431         if (ether_addr_equal(netdev->dev_addr, hw->mac.addr)) {
1432                 struct i40e_aqc_remove_macvlan_element_data element;
1433
1434                 memset(&element, 0, sizeof(element));
1435                 ether_addr_copy(element.mac_addr, netdev->dev_addr);
1436                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1437                 i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1438         } else {
1439                 i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
1440                                 false, false);
1441         }
1442
1443         if (ether_addr_equal(addr->sa_data, hw->mac.addr)) {
1444                 struct i40e_aqc_add_macvlan_element_data element;
1445
1446                 memset(&element, 0, sizeof(element));
1447                 ether_addr_copy(element.mac_addr, hw->mac.addr);
1448                 element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
1449                 i40e_aq_add_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1450         } else {
1451                 f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY,
1452                                     false, false);
1453                 if (f)
1454                         f->is_laa = true;
1455         }
1456
1457         i40e_sync_vsi_filters(vsi);
1458         ether_addr_copy(netdev->dev_addr, addr->sa_data);
1459
1460         return 0;
1461 }
1462
1463 /**
1464  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1465  * @vsi: the VSI being setup
1466  * @ctxt: VSI context structure
1467  * @enabled_tc: Enabled TCs bitmap
1468  * @is_add: True if called before Add VSI
1469  *
1470  * Setup VSI queue mapping for enabled traffic classes.
1471  **/
1472 #ifdef I40E_FCOE
1473 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 #else
1478 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1479                                      struct i40e_vsi_context *ctxt,
1480                                      u8 enabled_tc,
1481                                      bool is_add)
1482 #endif
1483 {
1484         struct i40e_pf *pf = vsi->back;
1485         u16 sections = 0;
1486         u8 netdev_tc = 0;
1487         u16 numtc = 0;
1488         u16 qcount;
1489         u8 offset;
1490         u16 qmap;
1491         int i;
1492         u16 num_tc_qps = 0;
1493
1494         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1495         offset = 0;
1496
1497         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1498                 /* Find numtc from enabled TC bitmap */
1499                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1500                         if (enabled_tc & (1 << i)) /* TC is enabled */
1501                                 numtc++;
1502                 }
1503                 if (!numtc) {
1504                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1505                         numtc = 1;
1506                 }
1507         } else {
1508                 /* At least TC0 is enabled in case of non-DCB case */
1509                 numtc = 1;
1510         }
1511
1512         vsi->tc_config.numtc = numtc;
1513         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1514         /* Number of queues per enabled TC */
1515         num_tc_qps = vsi->alloc_queue_pairs/numtc;
1516         num_tc_qps = min_t(int, num_tc_qps, I40E_MAX_QUEUES_PER_TC);
1517
1518         /* Setup queue offset/count for all TCs for given VSI */
1519         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1520                 /* See if the given TC is enabled for the given VSI */
1521                 if (vsi->tc_config.enabled_tc & (1 << i)) { /* TC is enabled */
1522                         int pow, num_qps;
1523
1524                         switch (vsi->type) {
1525                         case I40E_VSI_MAIN:
1526                                 qcount = min_t(int, pf->rss_size, num_tc_qps);
1527                                 break;
1528 #ifdef I40E_FCOE
1529                         case I40E_VSI_FCOE:
1530                                 qcount = num_tc_qps;
1531                                 break;
1532 #endif
1533                         case I40E_VSI_FDIR:
1534                         case I40E_VSI_SRIOV:
1535                         case I40E_VSI_VMDQ2:
1536                         default:
1537                                 qcount = num_tc_qps;
1538                                 WARN_ON(i != 0);
1539                                 break;
1540                         }
1541                         vsi->tc_config.tc_info[i].qoffset = offset;
1542                         vsi->tc_config.tc_info[i].qcount = qcount;
1543
1544                         /* find the power-of-2 of the number of queue pairs */
1545                         num_qps = qcount;
1546                         pow = 0;
1547                         while (num_qps && ((1 << pow) < qcount)) {
1548                                 pow++;
1549                                 num_qps >>= 1;
1550                         }
1551
1552                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1553                         qmap =
1554                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1555                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1556
1557                         offset += qcount;
1558                 } else {
1559                         /* TC is not enabled so set the offset to
1560                          * default queue and allocate one queue
1561                          * for the given TC.
1562                          */
1563                         vsi->tc_config.tc_info[i].qoffset = 0;
1564                         vsi->tc_config.tc_info[i].qcount = 1;
1565                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1566
1567                         qmap = 0;
1568                 }
1569                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1570         }
1571
1572         /* Set actual Tx/Rx queue pairs */
1573         vsi->num_queue_pairs = offset;
1574
1575         /* Scheduler section valid can only be set for ADD VSI */
1576         if (is_add) {
1577                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1578
1579                 ctxt->info.up_enable_bits = enabled_tc;
1580         }
1581         if (vsi->type == I40E_VSI_SRIOV) {
1582                 ctxt->info.mapping_flags |=
1583                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1584                 for (i = 0; i < vsi->num_queue_pairs; i++)
1585                         ctxt->info.queue_mapping[i] =
1586                                                cpu_to_le16(vsi->base_queue + i);
1587         } else {
1588                 ctxt->info.mapping_flags |=
1589                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1590                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1591         }
1592         ctxt->info.valid_sections |= cpu_to_le16(sections);
1593 }
1594
1595 /**
1596  * i40e_set_rx_mode - NDO callback to set the netdev filters
1597  * @netdev: network interface device structure
1598  **/
1599 #ifdef I40E_FCOE
1600 void i40e_set_rx_mode(struct net_device *netdev)
1601 #else
1602 static void i40e_set_rx_mode(struct net_device *netdev)
1603 #endif
1604 {
1605         struct i40e_netdev_priv *np = netdev_priv(netdev);
1606         struct i40e_mac_filter *f, *ftmp;
1607         struct i40e_vsi *vsi = np->vsi;
1608         struct netdev_hw_addr *uca;
1609         struct netdev_hw_addr *mca;
1610         struct netdev_hw_addr *ha;
1611
1612         /* add addr if not already in the filter list */
1613         netdev_for_each_uc_addr(uca, netdev) {
1614                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1615                         if (i40e_is_vsi_in_vlan(vsi))
1616                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1617                                                      false, true);
1618                         else
1619                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1620                                                 false, true);
1621                 }
1622         }
1623
1624         netdev_for_each_mc_addr(mca, netdev) {
1625                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1626                         if (i40e_is_vsi_in_vlan(vsi))
1627                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1628                                                      false, true);
1629                         else
1630                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1631                                                 false, true);
1632                 }
1633         }
1634
1635         /* remove filter if not in netdev list */
1636         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1637                 bool found = false;
1638
1639                 if (!f->is_netdev)
1640                         continue;
1641
1642                 if (is_multicast_ether_addr(f->macaddr)) {
1643                         netdev_for_each_mc_addr(mca, netdev) {
1644                                 if (ether_addr_equal(mca->addr, f->macaddr)) {
1645                                         found = true;
1646                                         break;
1647                                 }
1648                         }
1649                 } else {
1650                         netdev_for_each_uc_addr(uca, netdev) {
1651                                 if (ether_addr_equal(uca->addr, f->macaddr)) {
1652                                         found = true;
1653                                         break;
1654                                 }
1655                         }
1656
1657                         for_each_dev_addr(netdev, ha) {
1658                                 if (ether_addr_equal(ha->addr, f->macaddr)) {
1659                                         found = true;
1660                                         break;
1661                                 }
1662                         }
1663                 }
1664                 if (!found)
1665                         i40e_del_filter(
1666                            vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1667         }
1668
1669         /* check for other flag changes */
1670         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1671                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1672                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1673         }
1674 }
1675
1676 /**
1677  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1678  * @vsi: ptr to the VSI
1679  *
1680  * Push any outstanding VSI filter changes through the AdminQ.
1681  *
1682  * Returns 0 or error value
1683  **/
1684 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
1685 {
1686         struct i40e_mac_filter *f, *ftmp;
1687         bool promisc_forced_on = false;
1688         bool add_happened = false;
1689         int filter_list_len = 0;
1690         u32 changed_flags = 0;
1691         i40e_status aq_ret = 0;
1692         struct i40e_pf *pf;
1693         int num_add = 0;
1694         int num_del = 0;
1695         u16 cmd_flags;
1696
1697         /* empty array typed pointers, kcalloc later */
1698         struct i40e_aqc_add_macvlan_element_data *add_list;
1699         struct i40e_aqc_remove_macvlan_element_data *del_list;
1700
1701         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1702                 usleep_range(1000, 2000);
1703         pf = vsi->back;
1704
1705         if (vsi->netdev) {
1706                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1707                 vsi->current_netdev_flags = vsi->netdev->flags;
1708         }
1709
1710         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1711                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1712
1713                 filter_list_len = pf->hw.aq.asq_buf_size /
1714                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1715                 del_list = kcalloc(filter_list_len,
1716                             sizeof(struct i40e_aqc_remove_macvlan_element_data),
1717                             GFP_KERNEL);
1718                 if (!del_list)
1719                         return -ENOMEM;
1720
1721                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1722                         if (!f->changed)
1723                                 continue;
1724
1725                         if (f->counter != 0)
1726                                 continue;
1727                         f->changed = false;
1728                         cmd_flags = 0;
1729
1730                         /* add to delete list */
1731                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
1732                         del_list[num_del].vlan_tag =
1733                                 cpu_to_le16((u16)(f->vlan ==
1734                                             I40E_VLAN_ANY ? 0 : f->vlan));
1735
1736                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1737                         del_list[num_del].flags = cmd_flags;
1738                         num_del++;
1739
1740                         /* unlink from filter list */
1741                         list_del(&f->list);
1742                         kfree(f);
1743
1744                         /* flush a full buffer */
1745                         if (num_del == filter_list_len) {
1746                                 aq_ret = i40e_aq_remove_macvlan(&pf->hw,
1747                                             vsi->seid, del_list, num_del,
1748                                             NULL);
1749                                 num_del = 0;
1750                                 memset(del_list, 0, sizeof(*del_list));
1751
1752                                 if (aq_ret &&
1753                                     pf->hw.aq.asq_last_status !=
1754                                                               I40E_AQ_RC_ENOENT)
1755                                         dev_info(&pf->pdev->dev,
1756                                                  "ignoring delete macvlan error, err %d, aq_err %d while flushing a full buffer\n",
1757                                                  aq_ret,
1758                                                  pf->hw.aq.asq_last_status);
1759                         }
1760                 }
1761                 if (num_del) {
1762                         aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
1763                                                      del_list, num_del, NULL);
1764                         num_del = 0;
1765
1766                         if (aq_ret &&
1767                             pf->hw.aq.asq_last_status != I40E_AQ_RC_ENOENT)
1768                                 dev_info(&pf->pdev->dev,
1769                                          "ignoring delete macvlan error, err %d, aq_err %d\n",
1770                                          aq_ret, pf->hw.aq.asq_last_status);
1771                 }
1772
1773                 kfree(del_list);
1774                 del_list = NULL;
1775
1776                 /* do all the adds now */
1777                 filter_list_len = pf->hw.aq.asq_buf_size /
1778                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1779                 add_list = kcalloc(filter_list_len,
1780                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1781                                GFP_KERNEL);
1782                 if (!add_list)
1783                         return -ENOMEM;
1784
1785                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1786                         if (!f->changed)
1787                                 continue;
1788
1789                         if (f->counter == 0)
1790                                 continue;
1791                         f->changed = false;
1792                         add_happened = true;
1793                         cmd_flags = 0;
1794
1795                         /* add to add array */
1796                         ether_addr_copy(add_list[num_add].mac_addr, f->macaddr);
1797                         add_list[num_add].vlan_tag =
1798                                 cpu_to_le16(
1799                                  (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
1800                         add_list[num_add].queue_number = 0;
1801
1802                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
1803                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
1804                         num_add++;
1805
1806                         /* flush a full buffer */
1807                         if (num_add == filter_list_len) {
1808                                 aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1809                                                              add_list, num_add,
1810                                                              NULL);
1811                                 num_add = 0;
1812
1813                                 if (aq_ret)
1814                                         break;
1815                                 memset(add_list, 0, sizeof(*add_list));
1816                         }
1817                 }
1818                 if (num_add) {
1819                         aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1820                                                      add_list, num_add, NULL);
1821                         num_add = 0;
1822                 }
1823                 kfree(add_list);
1824                 add_list = NULL;
1825
1826                 if (add_happened && aq_ret &&
1827                     pf->hw.aq.asq_last_status != I40E_AQ_RC_EINVAL) {
1828                         dev_info(&pf->pdev->dev,
1829                                  "add filter failed, err %d, aq_err %d\n",
1830                                  aq_ret, pf->hw.aq.asq_last_status);
1831                         if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
1832                             !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1833                                       &vsi->state)) {
1834                                 promisc_forced_on = true;
1835                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1836                                         &vsi->state);
1837                                 dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
1838                         }
1839                 }
1840         }
1841
1842         /* check for changes in promiscuous modes */
1843         if (changed_flags & IFF_ALLMULTI) {
1844                 bool cur_multipromisc;
1845                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
1846                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
1847                                                                vsi->seid,
1848                                                                cur_multipromisc,
1849                                                                NULL);
1850                 if (aq_ret)
1851                         dev_info(&pf->pdev->dev,
1852                                  "set multi promisc failed, err %d, aq_err %d\n",
1853                                  aq_ret, pf->hw.aq.asq_last_status);
1854         }
1855         if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
1856                 bool cur_promisc;
1857                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
1858                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1859                                         &vsi->state));
1860                 aq_ret = i40e_aq_set_vsi_unicast_promiscuous(&vsi->back->hw,
1861                                                              vsi->seid,
1862                                                              cur_promisc, NULL);
1863                 if (aq_ret)
1864                         dev_info(&pf->pdev->dev,
1865                                  "set uni promisc failed, err %d, aq_err %d\n",
1866                                  aq_ret, pf->hw.aq.asq_last_status);
1867                 aq_ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
1868                                                    vsi->seid,
1869                                                    cur_promisc, NULL);
1870                 if (aq_ret)
1871                         dev_info(&pf->pdev->dev,
1872                                  "set brdcast promisc failed, err %d, aq_err %d\n",
1873                                  aq_ret, pf->hw.aq.asq_last_status);
1874         }
1875
1876         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
1877         return 0;
1878 }
1879
1880 /**
1881  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
1882  * @pf: board private structure
1883  **/
1884 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
1885 {
1886         int v;
1887
1888         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
1889                 return;
1890         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
1891
1892         for (v = 0; v < pf->num_alloc_vsi; v++) {
1893                 if (pf->vsi[v] &&
1894                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED))
1895                         i40e_sync_vsi_filters(pf->vsi[v]);
1896         }
1897 }
1898
1899 /**
1900  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
1901  * @netdev: network interface device structure
1902  * @new_mtu: new value for maximum frame size
1903  *
1904  * Returns 0 on success, negative on failure
1905  **/
1906 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
1907 {
1908         struct i40e_netdev_priv *np = netdev_priv(netdev);
1909         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
1910         struct i40e_vsi *vsi = np->vsi;
1911
1912         /* MTU < 68 is an error and causes problems on some kernels */
1913         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
1914                 return -EINVAL;
1915
1916         netdev_info(netdev, "changing MTU from %d to %d\n",
1917                     netdev->mtu, new_mtu);
1918         netdev->mtu = new_mtu;
1919         if (netif_running(netdev))
1920                 i40e_vsi_reinit_locked(vsi);
1921
1922         return 0;
1923 }
1924
1925 /**
1926  * i40e_ioctl - Access the hwtstamp interface
1927  * @netdev: network interface device structure
1928  * @ifr: interface request data
1929  * @cmd: ioctl command
1930  **/
1931 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
1932 {
1933         struct i40e_netdev_priv *np = netdev_priv(netdev);
1934         struct i40e_pf *pf = np->vsi->back;
1935
1936         switch (cmd) {
1937         case SIOCGHWTSTAMP:
1938                 return i40e_ptp_get_ts_config(pf, ifr);
1939         case SIOCSHWTSTAMP:
1940                 return i40e_ptp_set_ts_config(pf, ifr);
1941         default:
1942                 return -EOPNOTSUPP;
1943         }
1944 }
1945
1946 /**
1947  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
1948  * @vsi: the vsi being adjusted
1949  **/
1950 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
1951 {
1952         struct i40e_vsi_context ctxt;
1953         i40e_status ret;
1954
1955         if ((vsi->info.valid_sections &
1956              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
1957             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
1958                 return;  /* already enabled */
1959
1960         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
1961         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
1962                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
1963
1964         ctxt.seid = vsi->seid;
1965         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
1966         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
1967         if (ret) {
1968                 dev_info(&vsi->back->pdev->dev,
1969                          "%s: update vsi failed, aq_err=%d\n",
1970                          __func__, vsi->back->hw.aq.asq_last_status);
1971         }
1972 }
1973
1974 /**
1975  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
1976  * @vsi: the vsi being adjusted
1977  **/
1978 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
1979 {
1980         struct i40e_vsi_context ctxt;
1981         i40e_status ret;
1982
1983         if ((vsi->info.valid_sections &
1984              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
1985             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
1986              I40E_AQ_VSI_PVLAN_EMOD_MASK))
1987                 return;  /* already disabled */
1988
1989         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
1990         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
1991                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
1992
1993         ctxt.seid = vsi->seid;
1994         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
1995         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
1996         if (ret) {
1997                 dev_info(&vsi->back->pdev->dev,
1998                          "%s: update vsi failed, aq_err=%d\n",
1999                          __func__, vsi->back->hw.aq.asq_last_status);
2000         }
2001 }
2002
2003 /**
2004  * i40e_vlan_rx_register - Setup or shutdown vlan offload
2005  * @netdev: network interface to be adjusted
2006  * @features: netdev features to test if VLAN offload is enabled or not
2007  **/
2008 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
2009 {
2010         struct i40e_netdev_priv *np = netdev_priv(netdev);
2011         struct i40e_vsi *vsi = np->vsi;
2012
2013         if (features & NETIF_F_HW_VLAN_CTAG_RX)
2014                 i40e_vlan_stripping_enable(vsi);
2015         else
2016                 i40e_vlan_stripping_disable(vsi);
2017 }
2018
2019 /**
2020  * i40e_vsi_add_vlan - Add vsi membership for given vlan
2021  * @vsi: the vsi being configured
2022  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2023  **/
2024 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
2025 {
2026         struct i40e_mac_filter *f, *add_f;
2027         bool is_netdev, is_vf;
2028
2029         is_vf = (vsi->type == I40E_VSI_SRIOV);
2030         is_netdev = !!(vsi->netdev);
2031
2032         if (is_netdev) {
2033                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
2034                                         is_vf, is_netdev);
2035                 if (!add_f) {
2036                         dev_info(&vsi->back->pdev->dev,
2037                                  "Could not add vlan filter %d for %pM\n",
2038                                  vid, vsi->netdev->dev_addr);
2039                         return -ENOMEM;
2040                 }
2041         }
2042
2043         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2044                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2045                 if (!add_f) {
2046                         dev_info(&vsi->back->pdev->dev,
2047                                  "Could not add vlan filter %d for %pM\n",
2048                                  vid, f->macaddr);
2049                         return -ENOMEM;
2050                 }
2051         }
2052
2053         /* Now if we add a vlan tag, make sure to check if it is the first
2054          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
2055          * with 0, so we now accept untagged and specified tagged traffic
2056          * (and not any taged and untagged)
2057          */
2058         if (vid > 0) {
2059                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
2060                                                   I40E_VLAN_ANY,
2061                                                   is_vf, is_netdev)) {
2062                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
2063                                         I40E_VLAN_ANY, is_vf, is_netdev);
2064                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
2065                                                 is_vf, is_netdev);
2066                         if (!add_f) {
2067                                 dev_info(&vsi->back->pdev->dev,
2068                                          "Could not add filter 0 for %pM\n",
2069                                          vsi->netdev->dev_addr);
2070                                 return -ENOMEM;
2071                         }
2072                 }
2073         }
2074
2075         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
2076         if (vid > 0 && !vsi->info.pvid) {
2077                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2078                         if (i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2079                                              is_vf, is_netdev)) {
2080                                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2081                                                 is_vf, is_netdev);
2082                                 add_f = i40e_add_filter(vsi, f->macaddr,
2083                                                         0, is_vf, is_netdev);
2084                                 if (!add_f) {
2085                                         dev_info(&vsi->back->pdev->dev,
2086                                                  "Could not add filter 0 for %pM\n",
2087                                                  f->macaddr);
2088                                         return -ENOMEM;
2089                                 }
2090                         }
2091                 }
2092         }
2093
2094         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2095             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2096                 return 0;
2097
2098         return i40e_sync_vsi_filters(vsi);
2099 }
2100
2101 /**
2102  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
2103  * @vsi: the vsi being configured
2104  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2105  *
2106  * Return: 0 on success or negative otherwise
2107  **/
2108 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
2109 {
2110         struct net_device *netdev = vsi->netdev;
2111         struct i40e_mac_filter *f, *add_f;
2112         bool is_vf, is_netdev;
2113         int filter_count = 0;
2114
2115         is_vf = (vsi->type == I40E_VSI_SRIOV);
2116         is_netdev = !!(netdev);
2117
2118         if (is_netdev)
2119                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
2120
2121         list_for_each_entry(f, &vsi->mac_filter_list, list)
2122                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2123
2124         /* go through all the filters for this VSI and if there is only
2125          * vid == 0 it means there are no other filters, so vid 0 must
2126          * be replaced with -1. This signifies that we should from now
2127          * on accept any traffic (with any tag present, or untagged)
2128          */
2129         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2130                 if (is_netdev) {
2131                         if (f->vlan &&
2132                             ether_addr_equal(netdev->dev_addr, f->macaddr))
2133                                 filter_count++;
2134                 }
2135
2136                 if (f->vlan)
2137                         filter_count++;
2138         }
2139
2140         if (!filter_count && is_netdev) {
2141                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
2142                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
2143                                     is_vf, is_netdev);
2144                 if (!f) {
2145                         dev_info(&vsi->back->pdev->dev,
2146                                  "Could not add filter %d for %pM\n",
2147                                  I40E_VLAN_ANY, netdev->dev_addr);
2148                         return -ENOMEM;
2149                 }
2150         }
2151
2152         if (!filter_count) {
2153                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2154                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
2155                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2156                                             is_vf, is_netdev);
2157                         if (!add_f) {
2158                                 dev_info(&vsi->back->pdev->dev,
2159                                          "Could not add filter %d for %pM\n",
2160                                          I40E_VLAN_ANY, f->macaddr);
2161                                 return -ENOMEM;
2162                         }
2163                 }
2164         }
2165
2166         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2167             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2168                 return 0;
2169
2170         return i40e_sync_vsi_filters(vsi);
2171 }
2172
2173 /**
2174  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2175  * @netdev: network interface to be adjusted
2176  * @vid: vlan id to be added
2177  *
2178  * net_device_ops implementation for adding vlan ids
2179  **/
2180 #ifdef I40E_FCOE
2181 int i40e_vlan_rx_add_vid(struct net_device *netdev,
2182                          __always_unused __be16 proto, u16 vid)
2183 #else
2184 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2185                                 __always_unused __be16 proto, u16 vid)
2186 #endif
2187 {
2188         struct i40e_netdev_priv *np = netdev_priv(netdev);
2189         struct i40e_vsi *vsi = np->vsi;
2190         int ret = 0;
2191
2192         if (vid > 4095)
2193                 return -EINVAL;
2194
2195         netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
2196
2197         /* If the network stack called us with vid = 0 then
2198          * it is asking to receive priority tagged packets with
2199          * vlan id 0.  Our HW receives them by default when configured
2200          * to receive untagged packets so there is no need to add an
2201          * extra filter for vlan 0 tagged packets.
2202          */
2203         if (vid)
2204                 ret = i40e_vsi_add_vlan(vsi, vid);
2205
2206         if (!ret && (vid < VLAN_N_VID))
2207                 set_bit(vid, vsi->active_vlans);
2208
2209         return ret;
2210 }
2211
2212 /**
2213  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2214  * @netdev: network interface to be adjusted
2215  * @vid: vlan id to be removed
2216  *
2217  * net_device_ops implementation for removing vlan ids
2218  **/
2219 #ifdef I40E_FCOE
2220 int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2221                           __always_unused __be16 proto, u16 vid)
2222 #else
2223 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2224                                  __always_unused __be16 proto, u16 vid)
2225 #endif
2226 {
2227         struct i40e_netdev_priv *np = netdev_priv(netdev);
2228         struct i40e_vsi *vsi = np->vsi;
2229
2230         netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
2231
2232         /* return code is ignored as there is nothing a user
2233          * can do about failure to remove and a log message was
2234          * already printed from the other function
2235          */
2236         i40e_vsi_kill_vlan(vsi, vid);
2237
2238         clear_bit(vid, vsi->active_vlans);
2239
2240         return 0;
2241 }
2242
2243 /**
2244  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2245  * @vsi: the vsi being brought back up
2246  **/
2247 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2248 {
2249         u16 vid;
2250
2251         if (!vsi->netdev)
2252                 return;
2253
2254         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2255
2256         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2257                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2258                                      vid);
2259 }
2260
2261 /**
2262  * i40e_vsi_add_pvid - Add pvid for the VSI
2263  * @vsi: the vsi being adjusted
2264  * @vid: the vlan id to set as a PVID
2265  **/
2266 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2267 {
2268         struct i40e_vsi_context ctxt;
2269         i40e_status aq_ret;
2270
2271         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2272         vsi->info.pvid = cpu_to_le16(vid);
2273         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2274                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2275                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2276
2277         ctxt.seid = vsi->seid;
2278         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
2279         aq_ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2280         if (aq_ret) {
2281                 dev_info(&vsi->back->pdev->dev,
2282                          "%s: update vsi failed, aq_err=%d\n",
2283                          __func__, vsi->back->hw.aq.asq_last_status);
2284                 return -ENOENT;
2285         }
2286
2287         return 0;
2288 }
2289
2290 /**
2291  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2292  * @vsi: the vsi being adjusted
2293  *
2294  * Just use the vlan_rx_register() service to put it back to normal
2295  **/
2296 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2297 {
2298         i40e_vlan_stripping_disable(vsi);
2299
2300         vsi->info.pvid = 0;
2301 }
2302
2303 /**
2304  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2305  * @vsi: ptr to the VSI
2306  *
2307  * If this function returns with an error, then it's possible one or
2308  * more of the rings is populated (while the rest are not).  It is the
2309  * callers duty to clean those orphaned rings.
2310  *
2311  * Return 0 on success, negative on failure
2312  **/
2313 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2314 {
2315         int i, err = 0;
2316
2317         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2318                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2319
2320         return err;
2321 }
2322
2323 /**
2324  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2325  * @vsi: ptr to the VSI
2326  *
2327  * Free VSI's transmit software resources
2328  **/
2329 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2330 {
2331         int i;
2332
2333         if (!vsi->tx_rings)
2334                 return;
2335
2336         for (i = 0; i < vsi->num_queue_pairs; i++)
2337                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2338                         i40e_free_tx_resources(vsi->tx_rings[i]);
2339 }
2340
2341 /**
2342  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2343  * @vsi: ptr to the VSI
2344  *
2345  * If this function returns with an error, then it's possible one or
2346  * more of the rings is populated (while the rest are not).  It is the
2347  * callers duty to clean those orphaned rings.
2348  *
2349  * Return 0 on success, negative on failure
2350  **/
2351 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2352 {
2353         int i, err = 0;
2354
2355         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2356                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2357 #ifdef I40E_FCOE
2358         i40e_fcoe_setup_ddp_resources(vsi);
2359 #endif
2360         return err;
2361 }
2362
2363 /**
2364  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2365  * @vsi: ptr to the VSI
2366  *
2367  * Free all receive software resources
2368  **/
2369 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2370 {
2371         int i;
2372
2373         if (!vsi->rx_rings)
2374                 return;
2375
2376         for (i = 0; i < vsi->num_queue_pairs; i++)
2377                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2378                         i40e_free_rx_resources(vsi->rx_rings[i]);
2379 #ifdef I40E_FCOE
2380         i40e_fcoe_free_ddp_resources(vsi);
2381 #endif
2382 }
2383
2384 /**
2385  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2386  * @ring: The Tx ring to configure
2387  *
2388  * Configure the Tx descriptor ring in the HMC context.
2389  **/
2390 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2391 {
2392         struct i40e_vsi *vsi = ring->vsi;
2393         u16 pf_q = vsi->base_queue + ring->queue_index;
2394         struct i40e_hw *hw = &vsi->back->hw;
2395         struct i40e_hmc_obj_txq tx_ctx;
2396         i40e_status err = 0;
2397         u32 qtx_ctl = 0;
2398
2399         /* some ATR related tx ring init */
2400         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2401                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2402                 ring->atr_count = 0;
2403         } else {
2404                 ring->atr_sample_rate = 0;
2405         }
2406
2407         /* initialize XPS */
2408         if (ring->q_vector && ring->netdev &&
2409             vsi->tc_config.numtc <= 1 &&
2410             !test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2411                 netif_set_xps_queue(ring->netdev,
2412                                     &ring->q_vector->affinity_mask,
2413                                     ring->queue_index);
2414
2415         /* clear the context structure first */
2416         memset(&tx_ctx, 0, sizeof(tx_ctx));
2417
2418         tx_ctx.new_context = 1;
2419         tx_ctx.base = (ring->dma / 128);
2420         tx_ctx.qlen = ring->count;
2421         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2422                                                I40E_FLAG_FD_ATR_ENABLED));
2423 #ifdef I40E_FCOE
2424         tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2425 #endif
2426         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2427         /* FDIR VSI tx ring can still use RS bit and writebacks */
2428         if (vsi->type != I40E_VSI_FDIR)
2429                 tx_ctx.head_wb_ena = 1;
2430         tx_ctx.head_wb_addr = ring->dma +
2431                               (ring->count * sizeof(struct i40e_tx_desc));
2432
2433         /* As part of VSI creation/update, FW allocates certain
2434          * Tx arbitration queue sets for each TC enabled for
2435          * the VSI. The FW returns the handles to these queue
2436          * sets as part of the response buffer to Add VSI,
2437          * Update VSI, etc. AQ commands. It is expected that
2438          * these queue set handles be associated with the Tx
2439          * queues by the driver as part of the TX queue context
2440          * initialization. This has to be done regardless of
2441          * DCB as by default everything is mapped to TC0.
2442          */
2443         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2444         tx_ctx.rdylist_act = 0;
2445
2446         /* clear the context in the HMC */
2447         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2448         if (err) {
2449                 dev_info(&vsi->back->pdev->dev,
2450                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2451                          ring->queue_index, pf_q, err);
2452                 return -ENOMEM;
2453         }
2454
2455         /* set the context in the HMC */
2456         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2457         if (err) {
2458                 dev_info(&vsi->back->pdev->dev,
2459                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2460                          ring->queue_index, pf_q, err);
2461                 return -ENOMEM;
2462         }
2463
2464         /* Now associate this queue with this PCI function */
2465         if (vsi->type == I40E_VSI_VMDQ2)
2466                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2467         else
2468                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2469         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2470                     I40E_QTX_CTL_PF_INDX_MASK);
2471         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2472         i40e_flush(hw);
2473
2474         clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
2475
2476         /* cache tail off for easier writes later */
2477         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2478
2479         return 0;
2480 }
2481
2482 /**
2483  * i40e_configure_rx_ring - Configure a receive ring context
2484  * @ring: The Rx ring to configure
2485  *
2486  * Configure the Rx descriptor ring in the HMC context.
2487  **/
2488 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2489 {
2490         struct i40e_vsi *vsi = ring->vsi;
2491         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2492         u16 pf_q = vsi->base_queue + ring->queue_index;
2493         struct i40e_hw *hw = &vsi->back->hw;
2494         struct i40e_hmc_obj_rxq rx_ctx;
2495         i40e_status err = 0;
2496
2497         ring->state = 0;
2498
2499         /* clear the context structure first */
2500         memset(&rx_ctx, 0, sizeof(rx_ctx));
2501
2502         ring->rx_buf_len = vsi->rx_buf_len;
2503         ring->rx_hdr_len = vsi->rx_hdr_len;
2504
2505         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2506         rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
2507
2508         rx_ctx.base = (ring->dma / 128);
2509         rx_ctx.qlen = ring->count;
2510
2511         if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
2512                 set_ring_16byte_desc_enabled(ring);
2513                 rx_ctx.dsize = 0;
2514         } else {
2515                 rx_ctx.dsize = 1;
2516         }
2517
2518         rx_ctx.dtype = vsi->dtype;
2519         if (vsi->dtype) {
2520                 set_ring_ps_enabled(ring);
2521                 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
2522                                   I40E_RX_SPLIT_IP      |
2523                                   I40E_RX_SPLIT_TCP_UDP |
2524                                   I40E_RX_SPLIT_SCTP;
2525         } else {
2526                 rx_ctx.hsplit_0 = 0;
2527         }
2528
2529         rx_ctx.rxmax = min_t(u16, vsi->max_frame,
2530                                   (chain_len * ring->rx_buf_len));
2531         if (hw->revision_id == 0)
2532                 rx_ctx.lrxqthresh = 0;
2533         else
2534                 rx_ctx.lrxqthresh = 2;
2535         rx_ctx.crcstrip = 1;
2536         rx_ctx.l2tsel = 1;
2537         rx_ctx.showiv = 1;
2538 #ifdef I40E_FCOE
2539         rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2540 #endif
2541         /* set the prefena field to 1 because the manual says to */
2542         rx_ctx.prefena = 1;
2543
2544         /* clear the context in the HMC */
2545         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2546         if (err) {
2547                 dev_info(&vsi->back->pdev->dev,
2548                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2549                          ring->queue_index, pf_q, err);
2550                 return -ENOMEM;
2551         }
2552
2553         /* set the context in the HMC */
2554         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2555         if (err) {
2556                 dev_info(&vsi->back->pdev->dev,
2557                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2558                          ring->queue_index, pf_q, err);
2559                 return -ENOMEM;
2560         }
2561
2562         /* cache tail for quicker writes, and clear the reg before use */
2563         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2564         writel(0, ring->tail);
2565
2566         i40e_alloc_rx_buffers(ring, I40E_DESC_UNUSED(ring));
2567
2568         return 0;
2569 }
2570
2571 /**
2572  * i40e_vsi_configure_tx - Configure the VSI for Tx
2573  * @vsi: VSI structure describing this set of rings and resources
2574  *
2575  * Configure the Tx VSI for operation.
2576  **/
2577 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2578 {
2579         int err = 0;
2580         u16 i;
2581
2582         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2583                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2584
2585         return err;
2586 }
2587
2588 /**
2589  * i40e_vsi_configure_rx - Configure the VSI for Rx
2590  * @vsi: the VSI being configured
2591  *
2592  * Configure the Rx VSI for operation.
2593  **/
2594 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2595 {
2596         int err = 0;
2597         u16 i;
2598
2599         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2600                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2601                                + ETH_FCS_LEN + VLAN_HLEN;
2602         else
2603                 vsi->max_frame = I40E_RXBUFFER_2048;
2604
2605         /* figure out correct receive buffer length */
2606         switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2607                                     I40E_FLAG_RX_PS_ENABLED)) {
2608         case I40E_FLAG_RX_1BUF_ENABLED:
2609                 vsi->rx_hdr_len = 0;
2610                 vsi->rx_buf_len = vsi->max_frame;
2611                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2612                 break;
2613         case I40E_FLAG_RX_PS_ENABLED:
2614                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2615                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2616                 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2617                 break;
2618         default:
2619                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2620                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2621                 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2622                 break;
2623         }
2624
2625 #ifdef I40E_FCOE
2626         /* setup rx buffer for FCoE */
2627         if ((vsi->type == I40E_VSI_FCOE) &&
2628             (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
2629                 vsi->rx_hdr_len = 0;
2630                 vsi->rx_buf_len = I40E_RXBUFFER_3072;
2631                 vsi->max_frame = I40E_RXBUFFER_3072;
2632                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2633         }
2634
2635 #endif /* I40E_FCOE */
2636         /* round up for the chip's needs */
2637         vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
2638                                 (1 << I40E_RXQ_CTX_HBUFF_SHIFT));
2639         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2640                                 (1 << I40E_RXQ_CTX_DBUFF_SHIFT));
2641
2642         /* set up individual rings */
2643         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2644                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
2645
2646         return err;
2647 }
2648
2649 /**
2650  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
2651  * @vsi: ptr to the VSI
2652  **/
2653 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
2654 {
2655         struct i40e_ring *tx_ring, *rx_ring;
2656         u16 qoffset, qcount;
2657         int i, n;
2658
2659         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED))
2660                 return;
2661
2662         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
2663                 if (!(vsi->tc_config.enabled_tc & (1 << n)))
2664                         continue;
2665
2666                 qoffset = vsi->tc_config.tc_info[n].qoffset;
2667                 qcount = vsi->tc_config.tc_info[n].qcount;
2668                 for (i = qoffset; i < (qoffset + qcount); i++) {
2669                         rx_ring = vsi->rx_rings[i];
2670                         tx_ring = vsi->tx_rings[i];
2671                         rx_ring->dcb_tc = n;
2672                         tx_ring->dcb_tc = n;
2673                 }
2674         }
2675 }
2676
2677 /**
2678  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
2679  * @vsi: ptr to the VSI
2680  **/
2681 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
2682 {
2683         if (vsi->netdev)
2684                 i40e_set_rx_mode(vsi->netdev);
2685 }
2686
2687 /**
2688  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
2689  * @vsi: Pointer to the targeted VSI
2690  *
2691  * This function replays the hlist on the hw where all the SB Flow Director
2692  * filters were saved.
2693  **/
2694 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
2695 {
2696         struct i40e_fdir_filter *filter;
2697         struct i40e_pf *pf = vsi->back;
2698         struct hlist_node *node;
2699
2700         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
2701                 return;
2702
2703         hlist_for_each_entry_safe(filter, node,
2704                                   &pf->fdir_filter_list, fdir_node) {
2705                 i40e_add_del_fdir(vsi, filter, true);
2706         }
2707 }
2708
2709 /**
2710  * i40e_vsi_configure - Set up the VSI for action
2711  * @vsi: the VSI being configured
2712  **/
2713 static int i40e_vsi_configure(struct i40e_vsi *vsi)
2714 {
2715         int err;
2716
2717         i40e_set_vsi_rx_mode(vsi);
2718         i40e_restore_vlan(vsi);
2719         i40e_vsi_config_dcb_rings(vsi);
2720         err = i40e_vsi_configure_tx(vsi);
2721         if (!err)
2722                 err = i40e_vsi_configure_rx(vsi);
2723
2724         return err;
2725 }
2726
2727 /**
2728  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
2729  * @vsi: the VSI being configured
2730  **/
2731 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
2732 {
2733         struct i40e_pf *pf = vsi->back;
2734         struct i40e_q_vector *q_vector;
2735         struct i40e_hw *hw = &pf->hw;
2736         u16 vector;
2737         int i, q;
2738         u32 val;
2739         u32 qp;
2740
2741         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
2742          * and PFINT_LNKLSTn registers, e.g.:
2743          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
2744          */
2745         qp = vsi->base_queue;
2746         vector = vsi->base_vector;
2747         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
2748                 q_vector = vsi->q_vectors[i];
2749                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2750                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
2751                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
2752                      q_vector->rx.itr);
2753                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2754                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
2755                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
2756                      q_vector->tx.itr);
2757
2758                 /* Linked list for the queuepairs assigned to this vector */
2759                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
2760                 for (q = 0; q < q_vector->num_ringpairs; q++) {
2761                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
2762                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
2763                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
2764                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
2765                               (I40E_QUEUE_TYPE_TX
2766                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
2767
2768                         wr32(hw, I40E_QINT_RQCTL(qp), val);
2769
2770                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
2771                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
2772                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
2773                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
2774                               (I40E_QUEUE_TYPE_RX
2775                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2776
2777                         /* Terminate the linked list */
2778                         if (q == (q_vector->num_ringpairs - 1))
2779                                 val |= (I40E_QUEUE_END_OF_LIST
2780                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2781
2782                         wr32(hw, I40E_QINT_TQCTL(qp), val);
2783                         qp++;
2784                 }
2785         }
2786
2787         i40e_flush(hw);
2788 }
2789
2790 /**
2791  * i40e_enable_misc_int_causes - enable the non-queue interrupts
2792  * @hw: ptr to the hardware info
2793  **/
2794 static void i40e_enable_misc_int_causes(struct i40e_hw *hw)
2795 {
2796         u32 val;
2797
2798         /* clear things first */
2799         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
2800         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
2801
2802         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
2803               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
2804               I40E_PFINT_ICR0_ENA_GRST_MASK          |
2805               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
2806               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
2807               I40E_PFINT_ICR0_ENA_TIMESYNC_MASK      |
2808               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
2809               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
2810               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
2811
2812         wr32(hw, I40E_PFINT_ICR0_ENA, val);
2813
2814         /* SW_ITR_IDX = 0, but don't change INTENA */
2815         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
2816                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
2817
2818         /* OTHER_ITR_IDX = 0 */
2819         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
2820 }
2821
2822 /**
2823  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
2824  * @vsi: the VSI being configured
2825  **/
2826 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
2827 {
2828         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
2829         struct i40e_pf *pf = vsi->back;
2830         struct i40e_hw *hw = &pf->hw;
2831         u32 val;
2832
2833         /* set the ITR configuration */
2834         q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2835         q_vector->rx.latency_range = I40E_LOW_LATENCY;
2836         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
2837         q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2838         q_vector->tx.latency_range = I40E_LOW_LATENCY;
2839         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
2840
2841         i40e_enable_misc_int_causes(hw);
2842
2843         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
2844         wr32(hw, I40E_PFINT_LNKLST0, 0);
2845
2846         /* Associate the queue pair to the vector and enable the queue int */
2847         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
2848               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
2849               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2850
2851         wr32(hw, I40E_QINT_RQCTL(0), val);
2852
2853         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
2854               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
2855               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2856
2857         wr32(hw, I40E_QINT_TQCTL(0), val);
2858         i40e_flush(hw);
2859 }
2860
2861 /**
2862  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
2863  * @pf: board private structure
2864  **/
2865 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
2866 {
2867         struct i40e_hw *hw = &pf->hw;
2868
2869         wr32(hw, I40E_PFINT_DYN_CTL0,
2870              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
2871         i40e_flush(hw);
2872 }
2873
2874 /**
2875  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
2876  * @pf: board private structure
2877  **/
2878 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
2879 {
2880         struct i40e_hw *hw = &pf->hw;
2881         u32 val;
2882
2883         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
2884               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
2885               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
2886
2887         wr32(hw, I40E_PFINT_DYN_CTL0, val);
2888         i40e_flush(hw);
2889 }
2890
2891 /**
2892  * i40e_irq_dynamic_enable - Enable default interrupt generation settings
2893  * @vsi: pointer to a vsi
2894  * @vector: enable a particular Hw Interrupt vector
2895  **/
2896 void i40e_irq_dynamic_enable(struct i40e_vsi *vsi, int vector)
2897 {
2898         struct i40e_pf *pf = vsi->back;
2899         struct i40e_hw *hw = &pf->hw;
2900         u32 val;
2901
2902         val = I40E_PFINT_DYN_CTLN_INTENA_MASK |
2903               I40E_PFINT_DYN_CTLN_CLEARPBA_MASK |
2904               (I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
2905         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
2906         /* skip the flush */
2907 }
2908
2909 /**
2910  * i40e_irq_dynamic_disable - Disable default interrupt generation settings
2911  * @vsi: pointer to a vsi
2912  * @vector: enable a particular Hw Interrupt vector
2913  **/
2914 void i40e_irq_dynamic_disable(struct i40e_vsi *vsi, int vector)
2915 {
2916         struct i40e_pf *pf = vsi->back;
2917         struct i40e_hw *hw = &pf->hw;
2918         u32 val;
2919
2920         val = I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT;
2921         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
2922         i40e_flush(hw);
2923 }
2924
2925 /**
2926  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
2927  * @irq: interrupt number
2928  * @data: pointer to a q_vector
2929  **/
2930 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
2931 {
2932         struct i40e_q_vector *q_vector = data;
2933
2934         if (!q_vector->tx.ring && !q_vector->rx.ring)
2935                 return IRQ_HANDLED;
2936
2937         napi_schedule(&q_vector->napi);
2938
2939         return IRQ_HANDLED;
2940 }
2941
2942 /**
2943  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
2944  * @vsi: the VSI being configured
2945  * @basename: name for the vector
2946  *
2947  * Allocates MSI-X vectors and requests interrupts from the kernel.
2948  **/
2949 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
2950 {
2951         int q_vectors = vsi->num_q_vectors;
2952         struct i40e_pf *pf = vsi->back;
2953         int base = vsi->base_vector;
2954         int rx_int_idx = 0;
2955         int tx_int_idx = 0;
2956         int vector, err;
2957
2958         for (vector = 0; vector < q_vectors; vector++) {
2959                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
2960
2961                 if (q_vector->tx.ring && q_vector->rx.ring) {
2962                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2963                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
2964                         tx_int_idx++;
2965                 } else if (q_vector->rx.ring) {
2966                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2967                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
2968                 } else if (q_vector->tx.ring) {
2969                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2970                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
2971                 } else {
2972                         /* skip this unused q_vector */
2973                         continue;
2974                 }
2975                 err = request_irq(pf->msix_entries[base + vector].vector,
2976                                   vsi->irq_handler,
2977                                   0,
2978                                   q_vector->name,
2979                                   q_vector);
2980                 if (err) {
2981                         dev_info(&pf->pdev->dev,
2982                                  "%s: request_irq failed, error: %d\n",
2983                                  __func__, err);
2984                         goto free_queue_irqs;
2985                 }
2986                 /* assign the mask for this irq */
2987                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
2988                                       &q_vector->affinity_mask);
2989         }
2990
2991         vsi->irqs_ready = true;
2992         return 0;
2993
2994 free_queue_irqs:
2995         while (vector) {
2996                 vector--;
2997                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
2998                                       NULL);
2999                 free_irq(pf->msix_entries[base + vector].vector,
3000                          &(vsi->q_vectors[vector]));
3001         }
3002         return err;
3003 }
3004
3005 /**
3006  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3007  * @vsi: the VSI being un-configured
3008  **/
3009 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3010 {
3011         struct i40e_pf *pf = vsi->back;
3012         struct i40e_hw *hw = &pf->hw;
3013         int base = vsi->base_vector;
3014         int i;
3015
3016         for (i = 0; i < vsi->num_queue_pairs; i++) {
3017                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3018                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3019         }
3020
3021         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3022                 for (i = vsi->base_vector;
3023                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3024                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3025
3026                 i40e_flush(hw);
3027                 for (i = 0; i < vsi->num_q_vectors; i++)
3028                         synchronize_irq(pf->msix_entries[i + base].vector);
3029         } else {
3030                 /* Legacy and MSI mode - this stops all interrupt handling */
3031                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3032                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3033                 i40e_flush(hw);
3034                 synchronize_irq(pf->pdev->irq);
3035         }
3036 }
3037
3038 /**
3039  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3040  * @vsi: the VSI being configured
3041  **/
3042 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3043 {
3044         struct i40e_pf *pf = vsi->back;
3045         int i;
3046
3047         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3048                 for (i = vsi->base_vector;
3049                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3050                         i40e_irq_dynamic_enable(vsi, i);
3051         } else {
3052                 i40e_irq_dynamic_enable_icr0(pf);
3053         }
3054
3055         i40e_flush(&pf->hw);
3056         return 0;
3057 }
3058
3059 /**
3060  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3061  * @pf: board private structure
3062  **/
3063 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3064 {
3065         /* Disable ICR 0 */
3066         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3067         i40e_flush(&pf->hw);
3068 }
3069
3070 /**
3071  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3072  * @irq: interrupt number
3073  * @data: pointer to a q_vector
3074  *
3075  * This is the handler used for all MSI/Legacy interrupts, and deals
3076  * with both queue and non-queue interrupts.  This is also used in
3077  * MSIX mode to handle the non-queue interrupts.
3078  **/
3079 static irqreturn_t i40e_intr(int irq, void *data)
3080 {
3081         struct i40e_pf *pf = (struct i40e_pf *)data;
3082         struct i40e_hw *hw = &pf->hw;
3083         irqreturn_t ret = IRQ_NONE;
3084         u32 icr0, icr0_remaining;
3085         u32 val, ena_mask;
3086
3087         icr0 = rd32(hw, I40E_PFINT_ICR0);
3088         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3089
3090         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3091         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3092                 goto enable_intr;
3093
3094         /* if interrupt but no bits showing, must be SWINT */
3095         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3096             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3097                 pf->sw_int_count++;
3098
3099         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3100         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3101
3102                 /* temporarily disable queue cause for NAPI processing */
3103                 u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
3104                 qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
3105                 wr32(hw, I40E_QINT_RQCTL(0), qval);
3106
3107                 qval = rd32(hw, I40E_QINT_TQCTL(0));
3108                 qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
3109                 wr32(hw, I40E_QINT_TQCTL(0), qval);
3110
3111                 if (!test_bit(__I40E_DOWN, &pf->state))
3112                         napi_schedule(&pf->vsi[pf->lan_vsi]->q_vectors[0]->napi);
3113         }
3114
3115         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3116                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3117                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3118         }
3119
3120         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3121                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3122                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3123         }
3124
3125         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3126                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3127                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3128         }
3129
3130         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3131                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3132                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3133                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3134                 val = rd32(hw, I40E_GLGEN_RSTAT);
3135                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3136                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3137                 if (val == I40E_RESET_CORER) {
3138                         pf->corer_count++;
3139                 } else if (val == I40E_RESET_GLOBR) {
3140                         pf->globr_count++;
3141                 } else if (val == I40E_RESET_EMPR) {
3142                         pf->empr_count++;
3143                         set_bit(__I40E_EMP_RESET_REQUESTED, &pf->state);
3144                 }
3145         }
3146
3147         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3148                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3149                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3150         }
3151
3152         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3153                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3154
3155                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3156                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3157                         i40e_ptp_tx_hwtstamp(pf);
3158                 }
3159         }
3160
3161         /* If a critical error is pending we have no choice but to reset the
3162          * device.
3163          * Report and mask out any remaining unexpected interrupts.
3164          */
3165         icr0_remaining = icr0 & ena_mask;
3166         if (icr0_remaining) {
3167                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3168                          icr0_remaining);
3169                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3170                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3171                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3172                         dev_info(&pf->pdev->dev, "device will be reset\n");
3173                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3174                         i40e_service_event_schedule(pf);
3175                 }
3176                 ena_mask &= ~icr0_remaining;
3177         }
3178         ret = IRQ_HANDLED;
3179
3180 enable_intr:
3181         /* re-enable interrupt causes */
3182         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3183         if (!test_bit(__I40E_DOWN, &pf->state)) {
3184                 i40e_service_event_schedule(pf);
3185                 i40e_irq_dynamic_enable_icr0(pf);
3186         }
3187
3188         return ret;
3189 }
3190
3191 /**
3192  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3193  * @tx_ring:  tx ring to clean
3194  * @budget:   how many cleans we're allowed
3195  *
3196  * Returns true if there's any budget left (e.g. the clean is finished)
3197  **/
3198 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3199 {
3200         struct i40e_vsi *vsi = tx_ring->vsi;
3201         u16 i = tx_ring->next_to_clean;
3202         struct i40e_tx_buffer *tx_buf;
3203         struct i40e_tx_desc *tx_desc;
3204
3205         tx_buf = &tx_ring->tx_bi[i];
3206         tx_desc = I40E_TX_DESC(tx_ring, i);
3207         i -= tx_ring->count;
3208
3209         do {
3210                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3211
3212                 /* if next_to_watch is not set then there is no work pending */
3213                 if (!eop_desc)
3214                         break;
3215
3216                 /* prevent any other reads prior to eop_desc */
3217                 read_barrier_depends();
3218
3219                 /* if the descriptor isn't done, no work yet to do */
3220                 if (!(eop_desc->cmd_type_offset_bsz &
3221                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3222                         break;
3223
3224                 /* clear next_to_watch to prevent false hangs */
3225                 tx_buf->next_to_watch = NULL;
3226
3227                 tx_desc->buffer_addr = 0;
3228                 tx_desc->cmd_type_offset_bsz = 0;
3229                 /* move past filter desc */
3230                 tx_buf++;
3231                 tx_desc++;
3232                 i++;
3233                 if (unlikely(!i)) {
3234                         i -= tx_ring->count;
3235                         tx_buf = tx_ring->tx_bi;
3236                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3237                 }
3238                 /* unmap skb header data */
3239                 dma_unmap_single(tx_ring->dev,
3240                                  dma_unmap_addr(tx_buf, dma),
3241                                  dma_unmap_len(tx_buf, len),
3242                                  DMA_TO_DEVICE);
3243                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3244                         kfree(tx_buf->raw_buf);
3245
3246                 tx_buf->raw_buf = NULL;
3247                 tx_buf->tx_flags = 0;
3248                 tx_buf->next_to_watch = NULL;
3249                 dma_unmap_len_set(tx_buf, len, 0);
3250                 tx_desc->buffer_addr = 0;
3251                 tx_desc->cmd_type_offset_bsz = 0;
3252
3253                 /* move us past the eop_desc for start of next FD desc */
3254                 tx_buf++;
3255                 tx_desc++;
3256                 i++;
3257                 if (unlikely(!i)) {
3258                         i -= tx_ring->count;
3259                         tx_buf = tx_ring->tx_bi;
3260                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3261                 }
3262
3263                 /* update budget accounting */
3264                 budget--;
3265         } while (likely(budget));
3266
3267         i += tx_ring->count;
3268         tx_ring->next_to_clean = i;
3269
3270         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED) {
3271                 i40e_irq_dynamic_enable(vsi,
3272                                 tx_ring->q_vector->v_idx + vsi->base_vector);
3273         }
3274         return budget > 0;
3275 }
3276
3277 /**
3278  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3279  * @irq: interrupt number
3280  * @data: pointer to a q_vector
3281  **/
3282 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3283 {
3284         struct i40e_q_vector *q_vector = data;
3285         struct i40e_vsi *vsi;
3286
3287         if (!q_vector->tx.ring)
3288                 return IRQ_HANDLED;
3289
3290         vsi = q_vector->tx.ring->vsi;
3291         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3292
3293         return IRQ_HANDLED;
3294 }
3295
3296 /**
3297  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3298  * @vsi: the VSI being configured
3299  * @v_idx: vector index
3300  * @qp_idx: queue pair index
3301  **/
3302 static void map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3303 {
3304         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3305         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3306         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3307
3308         tx_ring->q_vector = q_vector;
3309         tx_ring->next = q_vector->tx.ring;
3310         q_vector->tx.ring = tx_ring;
3311         q_vector->tx.count++;
3312
3313         rx_ring->q_vector = q_vector;
3314         rx_ring->next = q_vector->rx.ring;
3315         q_vector->rx.ring = rx_ring;
3316         q_vector->rx.count++;
3317 }
3318
3319 /**
3320  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3321  * @vsi: the VSI being configured
3322  *
3323  * This function maps descriptor rings to the queue-specific vectors
3324  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3325  * one vector per queue pair, but on a constrained vector budget, we
3326  * group the queue pairs as "efficiently" as possible.
3327  **/
3328 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3329 {
3330         int qp_remaining = vsi->num_queue_pairs;
3331         int q_vectors = vsi->num_q_vectors;
3332         int num_ringpairs;
3333         int v_start = 0;
3334         int qp_idx = 0;
3335
3336         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3337          * group them so there are multiple queues per vector.
3338          * It is also important to go through all the vectors available to be
3339          * sure that if we don't use all the vectors, that the remaining vectors
3340          * are cleared. This is especially important when decreasing the
3341          * number of queues in use.
3342          */
3343         for (; v_start < q_vectors; v_start++) {
3344                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3345
3346                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3347
3348                 q_vector->num_ringpairs = num_ringpairs;
3349
3350                 q_vector->rx.count = 0;
3351                 q_vector->tx.count = 0;
3352                 q_vector->rx.ring = NULL;
3353                 q_vector->tx.ring = NULL;
3354
3355                 while (num_ringpairs--) {
3356                         map_vector_to_qp(vsi, v_start, qp_idx);
3357                         qp_idx++;
3358                         qp_remaining--;
3359                 }
3360         }
3361 }
3362
3363 /**
3364  * i40e_vsi_request_irq - Request IRQ from the OS
3365  * @vsi: the VSI being configured
3366  * @basename: name for the vector
3367  **/
3368 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3369 {
3370         struct i40e_pf *pf = vsi->back;
3371         int err;
3372
3373         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3374                 err = i40e_vsi_request_irq_msix(vsi, basename);
3375         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3376                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3377                                   pf->misc_int_name, pf);
3378         else
3379                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3380                                   pf->misc_int_name, pf);
3381
3382         if (err)
3383                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3384
3385         return err;
3386 }
3387
3388 #ifdef CONFIG_NET_POLL_CONTROLLER
3389 /**
3390  * i40e_netpoll - A Polling 'interrupt'handler
3391  * @netdev: network interface device structure
3392  *
3393  * This is used by netconsole to send skbs without having to re-enable
3394  * interrupts.  It's not called while the normal interrupt routine is executing.
3395  **/
3396 #ifdef I40E_FCOE
3397 void i40e_netpoll(struct net_device *netdev)
3398 #else
3399 static void i40e_netpoll(struct net_device *netdev)
3400 #endif
3401 {
3402         struct i40e_netdev_priv *np = netdev_priv(netdev);
3403         struct i40e_vsi *vsi = np->vsi;
3404         struct i40e_pf *pf = vsi->back;
3405         int i;
3406
3407         /* if interface is down do nothing */
3408         if (test_bit(__I40E_DOWN, &vsi->state))
3409                 return;
3410
3411         pf->flags |= I40E_FLAG_IN_NETPOLL;
3412         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3413                 for (i = 0; i < vsi->num_q_vectors; i++)
3414                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3415         } else {
3416                 i40e_intr(pf->pdev->irq, netdev);
3417         }
3418         pf->flags &= ~I40E_FLAG_IN_NETPOLL;
3419 }
3420 #endif
3421
3422 /**
3423  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3424  * @pf: the PF being configured
3425  * @pf_q: the PF queue
3426  * @enable: enable or disable state of the queue
3427  *
3428  * This routine will wait for the given Tx queue of the PF to reach the
3429  * enabled or disabled state.
3430  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3431  * multiple retries; else will return 0 in case of success.
3432  **/
3433 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3434 {
3435         int i;
3436         u32 tx_reg;
3437
3438         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3439                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3440                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3441                         break;
3442
3443                 usleep_range(10, 20);
3444         }
3445         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3446                 return -ETIMEDOUT;
3447
3448         return 0;
3449 }
3450
3451 /**
3452  * i40e_vsi_control_tx - Start or stop a VSI's rings
3453  * @vsi: the VSI being configured
3454  * @enable: start or stop the rings
3455  **/
3456 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3457 {
3458         struct i40e_pf *pf = vsi->back;
3459         struct i40e_hw *hw = &pf->hw;
3460         int i, j, pf_q, ret = 0;
3461         u32 tx_reg;
3462
3463         pf_q = vsi->base_queue;
3464         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3465
3466                 /* warn the TX unit of coming changes */
3467                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3468                 if (!enable)
3469                         usleep_range(10, 20);
3470
3471                 for (j = 0; j < 50; j++) {
3472                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3473                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3474                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3475                                 break;
3476                         usleep_range(1000, 2000);
3477                 }
3478                 /* Skip if the queue is already in the requested state */
3479                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3480                         continue;
3481
3482                 /* turn on/off the queue */
3483                 if (enable) {
3484                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3485                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3486                 } else {
3487                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3488                 }
3489
3490                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3491
3492                 /* wait for the change to finish */
3493                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3494                 if (ret) {
3495                         dev_info(&pf->pdev->dev,
3496                                  "%s: VSI seid %d Tx ring %d %sable timeout\n",
3497                                  __func__, vsi->seid, pf_q,
3498                                  (enable ? "en" : "dis"));
3499                         break;
3500                 }
3501         }
3502
3503         if (hw->revision_id == 0)
3504                 mdelay(50);
3505         return ret;
3506 }
3507
3508 /**
3509  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
3510  * @pf: the PF being configured
3511  * @pf_q: the PF queue
3512  * @enable: enable or disable state of the queue
3513  *
3514  * This routine will wait for the given Rx queue of the PF to reach the
3515  * enabled or disabled state.
3516  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3517  * multiple retries; else will return 0 in case of success.
3518  **/
3519 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3520 {
3521         int i;
3522         u32 rx_reg;
3523
3524         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3525                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
3526                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3527                         break;
3528
3529                 usleep_range(10, 20);
3530         }
3531         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3532                 return -ETIMEDOUT;
3533
3534         return 0;
3535 }
3536
3537 /**
3538  * i40e_vsi_control_rx - Start or stop a VSI's rings
3539  * @vsi: the VSI being configured
3540  * @enable: start or stop the rings
3541  **/
3542 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3543 {
3544         struct i40e_pf *pf = vsi->back;
3545         struct i40e_hw *hw = &pf->hw;
3546         int i, j, pf_q, ret = 0;
3547         u32 rx_reg;
3548
3549         pf_q = vsi->base_queue;
3550         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3551                 for (j = 0; j < 50; j++) {
3552                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3553                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3554                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3555                                 break;
3556                         usleep_range(1000, 2000);
3557                 }
3558
3559                 /* Skip if the queue is already in the requested state */
3560                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3561                         continue;
3562
3563                 /* turn on/off the queue */
3564                 if (enable)
3565                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3566                 else
3567                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3568                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3569
3570                 /* wait for the change to finish */
3571                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
3572                 if (ret) {
3573                         dev_info(&pf->pdev->dev,
3574                                  "%s: VSI seid %d Rx ring %d %sable timeout\n",
3575                                  __func__, vsi->seid, pf_q,
3576                                  (enable ? "en" : "dis"));
3577                         break;
3578                 }
3579         }
3580
3581         return ret;
3582 }
3583
3584 /**
3585  * i40e_vsi_control_rings - Start or stop a VSI's rings
3586  * @vsi: the VSI being configured
3587  * @enable: start or stop the rings
3588  **/
3589 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3590 {
3591         int ret = 0;
3592
3593         /* do rx first for enable and last for disable */
3594         if (request) {
3595                 ret = i40e_vsi_control_rx(vsi, request);
3596                 if (ret)
3597                         return ret;
3598                 ret = i40e_vsi_control_tx(vsi, request);
3599         } else {
3600                 /* Ignore return value, we need to shutdown whatever we can */
3601                 i40e_vsi_control_tx(vsi, request);
3602                 i40e_vsi_control_rx(vsi, request);
3603         }
3604
3605         return ret;
3606 }
3607
3608 /**
3609  * i40e_vsi_free_irq - Free the irq association with the OS
3610  * @vsi: the VSI being configured
3611  **/
3612 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3613 {
3614         struct i40e_pf *pf = vsi->back;
3615         struct i40e_hw *hw = &pf->hw;
3616         int base = vsi->base_vector;
3617         u32 val, qp;
3618         int i;
3619
3620         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3621                 if (!vsi->q_vectors)
3622                         return;
3623
3624                 if (!vsi->irqs_ready)
3625                         return;
3626
3627                 vsi->irqs_ready = false;
3628                 for (i = 0; i < vsi->num_q_vectors; i++) {
3629                         u16 vector = i + base;
3630
3631                         /* free only the irqs that were actually requested */
3632                         if (!vsi->q_vectors[i] ||
3633                             !vsi->q_vectors[i]->num_ringpairs)
3634                                 continue;
3635
3636                         /* clear the affinity_mask in the IRQ descriptor */
3637                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
3638                                               NULL);
3639                         free_irq(pf->msix_entries[vector].vector,
3640                                  vsi->q_vectors[i]);
3641
3642                         /* Tear down the interrupt queue link list
3643                          *
3644                          * We know that they come in pairs and always
3645                          * the Rx first, then the Tx.  To clear the
3646                          * link list, stick the EOL value into the
3647                          * next_q field of the registers.
3648                          */
3649                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
3650                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3651                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3652                         val |= I40E_QUEUE_END_OF_LIST
3653                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3654                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
3655
3656                         while (qp != I40E_QUEUE_END_OF_LIST) {
3657                                 u32 next;
3658
3659                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3660
3661                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3662                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3663                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3664                                          I40E_QINT_RQCTL_INTEVENT_MASK);
3665
3666                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3667                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3668
3669                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3670
3671                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3672
3673                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
3674                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
3675
3676                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3677                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3678                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3679                                          I40E_QINT_TQCTL_INTEVENT_MASK);
3680
3681                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3682                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3683
3684                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3685                                 qp = next;
3686                         }
3687                 }
3688         } else {
3689                 free_irq(pf->pdev->irq, pf);
3690
3691                 val = rd32(hw, I40E_PFINT_LNKLST0);
3692                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3693                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3694                 val |= I40E_QUEUE_END_OF_LIST
3695                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
3696                 wr32(hw, I40E_PFINT_LNKLST0, val);
3697
3698                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3699                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3700                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3701                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3702                          I40E_QINT_RQCTL_INTEVENT_MASK);
3703
3704                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3705                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3706
3707                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3708
3709                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3710
3711                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3712                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3713                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3714                          I40E_QINT_TQCTL_INTEVENT_MASK);
3715
3716                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3717                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3718
3719                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3720         }
3721 }
3722
3723 /**
3724  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
3725  * @vsi: the VSI being configured
3726  * @v_idx: Index of vector to be freed
3727  *
3728  * This function frees the memory allocated to the q_vector.  In addition if
3729  * NAPI is enabled it will delete any references to the NAPI struct prior
3730  * to freeing the q_vector.
3731  **/
3732 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
3733 {
3734         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3735         struct i40e_ring *ring;
3736
3737         if (!q_vector)
3738                 return;
3739
3740         /* disassociate q_vector from rings */
3741         i40e_for_each_ring(ring, q_vector->tx)
3742                 ring->q_vector = NULL;
3743
3744         i40e_for_each_ring(ring, q_vector->rx)
3745                 ring->q_vector = NULL;
3746
3747         /* only VSI w/ an associated netdev is set up w/ NAPI */
3748         if (vsi->netdev)
3749                 netif_napi_del(&q_vector->napi);
3750
3751         vsi->q_vectors[v_idx] = NULL;
3752
3753         kfree_rcu(q_vector, rcu);
3754 }
3755
3756 /**
3757  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
3758  * @vsi: the VSI being un-configured
3759  *
3760  * This frees the memory allocated to the q_vectors and
3761  * deletes references to the NAPI struct.
3762  **/
3763 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
3764 {
3765         int v_idx;
3766
3767         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
3768                 i40e_free_q_vector(vsi, v_idx);
3769 }
3770
3771 /**
3772  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
3773  * @pf: board private structure
3774  **/
3775 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
3776 {
3777         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
3778         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3779                 pci_disable_msix(pf->pdev);
3780                 kfree(pf->msix_entries);
3781                 pf->msix_entries = NULL;
3782         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
3783                 pci_disable_msi(pf->pdev);
3784         }
3785         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
3786 }
3787
3788 /**
3789  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
3790  * @pf: board private structure
3791  *
3792  * We go through and clear interrupt specific resources and reset the structure
3793  * to pre-load conditions
3794  **/
3795 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
3796 {
3797         int i;
3798
3799         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
3800         for (i = 0; i < pf->num_alloc_vsi; i++)
3801                 if (pf->vsi[i])
3802                         i40e_vsi_free_q_vectors(pf->vsi[i]);
3803         i40e_reset_interrupt_capability(pf);
3804 }
3805
3806 /**
3807  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
3808  * @vsi: the VSI being configured
3809  **/
3810 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
3811 {
3812         int q_idx;
3813
3814         if (!vsi->netdev)
3815                 return;
3816
3817         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3818                 napi_enable(&vsi->q_vectors[q_idx]->napi);
3819 }
3820
3821 /**
3822  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
3823  * @vsi: the VSI being configured
3824  **/
3825 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
3826 {
3827         int q_idx;
3828
3829         if (!vsi->netdev)
3830                 return;
3831
3832         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3833                 napi_disable(&vsi->q_vectors[q_idx]->napi);
3834 }
3835
3836 /**
3837  * i40e_vsi_close - Shut down a VSI
3838  * @vsi: the vsi to be quelled
3839  **/
3840 static void i40e_vsi_close(struct i40e_vsi *vsi)
3841 {
3842         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
3843                 i40e_down(vsi);
3844         i40e_vsi_free_irq(vsi);
3845         i40e_vsi_free_tx_resources(vsi);
3846         i40e_vsi_free_rx_resources(vsi);
3847 }
3848
3849 /**
3850  * i40e_quiesce_vsi - Pause a given VSI
3851  * @vsi: the VSI being paused
3852  **/
3853 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
3854 {
3855         if (test_bit(__I40E_DOWN, &vsi->state))
3856                 return;
3857
3858         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
3859         if (vsi->netdev && netif_running(vsi->netdev)) {
3860                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
3861         } else {
3862                 i40e_vsi_close(vsi);
3863         }
3864 }
3865
3866 /**
3867  * i40e_unquiesce_vsi - Resume a given VSI
3868  * @vsi: the VSI being resumed
3869  **/
3870 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
3871 {
3872         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
3873                 return;
3874
3875         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
3876         if (vsi->netdev && netif_running(vsi->netdev))
3877                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
3878         else
3879                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
3880 }
3881
3882 /**
3883  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
3884  * @pf: the PF
3885  **/
3886 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
3887 {
3888         int v;
3889
3890         for (v = 0; v < pf->num_alloc_vsi; v++) {
3891                 if (pf->vsi[v])
3892                         i40e_quiesce_vsi(pf->vsi[v]);
3893         }
3894 }
3895
3896 /**
3897  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
3898  * @pf: the PF
3899  **/
3900 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
3901 {
3902         int v;
3903
3904         for (v = 0; v < pf->num_alloc_vsi; v++) {
3905                 if (pf->vsi[v])
3906                         i40e_unquiesce_vsi(pf->vsi[v]);
3907         }
3908 }
3909
3910 /**
3911  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
3912  * @dcbcfg: the corresponding DCBx configuration structure
3913  *
3914  * Return the number of TCs from given DCBx configuration
3915  **/
3916 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
3917 {
3918         u8 num_tc = 0;
3919         int i;
3920
3921         /* Scan the ETS Config Priority Table to find
3922          * traffic class enabled for a given priority
3923          * and use the traffic class index to get the
3924          * number of traffic classes enabled
3925          */
3926         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
3927                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
3928                         num_tc = dcbcfg->etscfg.prioritytable[i];
3929         }
3930
3931         /* Traffic class index starts from zero so
3932          * increment to return the actual count
3933          */
3934         return num_tc + 1;
3935 }
3936
3937 /**
3938  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
3939  * @dcbcfg: the corresponding DCBx configuration structure
3940  *
3941  * Query the current DCB configuration and return the number of
3942  * traffic classes enabled from the given DCBX config
3943  **/
3944 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
3945 {
3946         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
3947         u8 enabled_tc = 1;
3948         u8 i;
3949
3950         for (i = 0; i < num_tc; i++)
3951                 enabled_tc |= 1 << i;
3952
3953         return enabled_tc;
3954 }
3955
3956 /**
3957  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
3958  * @pf: PF being queried
3959  *
3960  * Return number of traffic classes enabled for the given PF
3961  **/
3962 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
3963 {
3964         struct i40e_hw *hw = &pf->hw;
3965         u8 i, enabled_tc;
3966         u8 num_tc = 0;
3967         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
3968
3969         /* If DCB is not enabled then always in single TC */
3970         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
3971                 return 1;
3972
3973         /* MFP mode return count of enabled TCs for this PF */
3974         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
3975                 enabled_tc = pf->hw.func_caps.enabled_tcmap;
3976                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3977                         if (enabled_tc & (1 << i))
3978                                 num_tc++;
3979                 }
3980                 return num_tc;
3981         }
3982
3983         /* SFP mode will be enabled for all TCs on port */
3984         return i40e_dcb_get_num_tc(dcbcfg);
3985 }
3986
3987 /**
3988  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
3989  * @pf: PF being queried
3990  *
3991  * Return a bitmap for first enabled traffic class for this PF.
3992  **/
3993 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
3994 {
3995         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
3996         u8 i = 0;
3997
3998         if (!enabled_tc)
3999                 return 0x1; /* TC0 */
4000
4001         /* Find the first enabled TC */
4002         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4003                 if (enabled_tc & (1 << i))
4004                         break;
4005         }
4006
4007         return 1 << i;
4008 }
4009
4010 /**
4011  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4012  * @pf: PF being queried
4013  *
4014  * Return a bitmap for enabled traffic classes for this PF.
4015  **/
4016 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4017 {
4018         /* If DCB is not enabled for this PF then just return default TC */
4019         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4020                 return i40e_pf_get_default_tc(pf);
4021
4022         /* MFP mode will have enabled TCs set by FW */
4023         if (pf->flags & I40E_FLAG_MFP_ENABLED)
4024                 return pf->hw.func_caps.enabled_tcmap;
4025
4026         /* SFP mode we want PF to be enabled for all TCs */
4027         return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4028 }
4029
4030 /**
4031  * i40e_vsi_get_bw_info - Query VSI BW Information
4032  * @vsi: the VSI being queried
4033  *
4034  * Returns 0 on success, negative value on failure
4035  **/
4036 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4037 {
4038         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4039         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4040         struct i40e_pf *pf = vsi->back;
4041         struct i40e_hw *hw = &pf->hw;
4042         i40e_status aq_ret;
4043         u32 tc_bw_max;
4044         int i;
4045
4046         /* Get the VSI level BW configuration */
4047         aq_ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4048         if (aq_ret) {
4049                 dev_info(&pf->pdev->dev,
4050                          "couldn't get pf vsi bw config, err %d, aq_err %d\n",
4051                          aq_ret, pf->hw.aq.asq_last_status);
4052                 return -EINVAL;
4053         }
4054
4055         /* Get the VSI level BW configuration per TC */
4056         aq_ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4057                                                   NULL);
4058         if (aq_ret) {
4059                 dev_info(&pf->pdev->dev,
4060                          "couldn't get pf vsi ets bw config, err %d, aq_err %d\n",
4061                          aq_ret, pf->hw.aq.asq_last_status);
4062                 return -EINVAL;
4063         }
4064
4065         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4066                 dev_info(&pf->pdev->dev,
4067                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4068                          bw_config.tc_valid_bits,
4069                          bw_ets_config.tc_valid_bits);
4070                 /* Still continuing */
4071         }
4072
4073         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4074         vsi->bw_max_quanta = bw_config.max_bw;
4075         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4076                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4077         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4078                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4079                 vsi->bw_ets_limit_credits[i] =
4080                                         le16_to_cpu(bw_ets_config.credits[i]);
4081                 /* 3 bits out of 4 for each TC */
4082                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4083         }
4084
4085         return 0;
4086 }
4087
4088 /**
4089  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4090  * @vsi: the VSI being configured
4091  * @enabled_tc: TC bitmap
4092  * @bw_credits: BW shared credits per TC
4093  *
4094  * Returns 0 on success, negative value on failure
4095  **/
4096 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4097                                        u8 *bw_share)
4098 {
4099         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4100         i40e_status aq_ret;
4101         int i;
4102
4103         bw_data.tc_valid_bits = enabled_tc;
4104         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4105                 bw_data.tc_bw_credits[i] = bw_share[i];
4106
4107         aq_ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4108                                           NULL);
4109         if (aq_ret) {
4110                 dev_info(&vsi->back->pdev->dev,
4111                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4112                          vsi->back->hw.aq.asq_last_status);
4113                 return -EINVAL;
4114         }
4115
4116         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4117                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4118
4119         return 0;
4120 }
4121
4122 /**
4123  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4124  * @vsi: the VSI being configured
4125  * @enabled_tc: TC map to be enabled
4126  *
4127  **/
4128 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4129 {
4130         struct net_device *netdev = vsi->netdev;
4131         struct i40e_pf *pf = vsi->back;
4132         struct i40e_hw *hw = &pf->hw;
4133         u8 netdev_tc = 0;
4134         int i;
4135         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4136
4137         if (!netdev)
4138                 return;
4139
4140         if (!enabled_tc) {
4141                 netdev_reset_tc(netdev);
4142                 return;
4143         }
4144
4145         /* Set up actual enabled TCs on the VSI */
4146         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4147                 return;
4148
4149         /* set per TC queues for the VSI */
4150         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4151                 /* Only set TC queues for enabled tcs
4152                  *
4153                  * e.g. For a VSI that has TC0 and TC3 enabled the
4154                  * enabled_tc bitmap would be 0x00001001; the driver
4155                  * will set the numtc for netdev as 2 that will be
4156                  * referenced by the netdev layer as TC 0 and 1.
4157                  */
4158                 if (vsi->tc_config.enabled_tc & (1 << i))
4159                         netdev_set_tc_queue(netdev,
4160                                         vsi->tc_config.tc_info[i].netdev_tc,
4161                                         vsi->tc_config.tc_info[i].qcount,
4162                                         vsi->tc_config.tc_info[i].qoffset);
4163         }
4164
4165         /* Assign UP2TC map for the VSI */
4166         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4167                 /* Get the actual TC# for the UP */
4168                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4169                 /* Get the mapped netdev TC# for the UP */
4170                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4171                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4172         }
4173 }
4174
4175 /**
4176  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4177  * @vsi: the VSI being configured
4178  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4179  **/
4180 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4181                                       struct i40e_vsi_context *ctxt)
4182 {
4183         /* copy just the sections touched not the entire info
4184          * since not all sections are valid as returned by
4185          * update vsi params
4186          */
4187         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4188         memcpy(&vsi->info.queue_mapping,
4189                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4190         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4191                sizeof(vsi->info.tc_mapping));
4192 }
4193
4194 /**
4195  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4196  * @vsi: VSI to be configured
4197  * @enabled_tc: TC bitmap
4198  *
4199  * This configures a particular VSI for TCs that are mapped to the
4200  * given TC bitmap. It uses default bandwidth share for TCs across
4201  * VSIs to configure TC for a particular VSI.
4202  *
4203  * NOTE:
4204  * It is expected that the VSI queues have been quisced before calling
4205  * this function.
4206  **/
4207 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4208 {
4209         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4210         struct i40e_vsi_context ctxt;
4211         int ret = 0;
4212         int i;
4213
4214         /* Check if enabled_tc is same as existing or new TCs */
4215         if (vsi->tc_config.enabled_tc == enabled_tc)
4216                 return ret;
4217
4218         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4219         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4220                 if (enabled_tc & (1 << i))
4221                         bw_share[i] = 1;
4222         }
4223
4224         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4225         if (ret) {
4226                 dev_info(&vsi->back->pdev->dev,
4227                          "Failed configuring TC map %d for VSI %d\n",
4228                          enabled_tc, vsi->seid);
4229                 goto out;
4230         }
4231
4232         /* Update Queue Pairs Mapping for currently enabled UPs */
4233         ctxt.seid = vsi->seid;
4234         ctxt.pf_num = vsi->back->hw.pf_id;
4235         ctxt.vf_num = 0;
4236         ctxt.uplink_seid = vsi->uplink_seid;
4237         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
4238         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4239
4240         /* Update the VSI after updating the VSI queue-mapping information */
4241         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4242         if (ret) {
4243                 dev_info(&vsi->back->pdev->dev,
4244                          "update vsi failed, aq_err=%d\n",
4245                          vsi->back->hw.aq.asq_last_status);
4246                 goto out;
4247         }
4248         /* update the local VSI info with updated queue map */
4249         i40e_vsi_update_queue_map(vsi, &ctxt);
4250         vsi->info.valid_sections = 0;
4251
4252         /* Update current VSI BW information */
4253         ret = i40e_vsi_get_bw_info(vsi);
4254         if (ret) {
4255                 dev_info(&vsi->back->pdev->dev,
4256                          "Failed updating vsi bw info, aq_err=%d\n",
4257                          vsi->back->hw.aq.asq_last_status);
4258                 goto out;
4259         }
4260
4261         /* Update the netdev TC setup */
4262         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4263 out:
4264         return ret;
4265 }
4266
4267 /**
4268  * i40e_veb_config_tc - Configure TCs for given VEB
4269  * @veb: given VEB
4270  * @enabled_tc: TC bitmap
4271  *
4272  * Configures given TC bitmap for VEB (switching) element
4273  **/
4274 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4275 {
4276         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4277         struct i40e_pf *pf = veb->pf;
4278         int ret = 0;
4279         int i;
4280
4281         /* No TCs or already enabled TCs just return */
4282         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4283                 return ret;
4284
4285         bw_data.tc_valid_bits = enabled_tc;
4286         /* bw_data.absolute_credits is not set (relative) */
4287
4288         /* Enable ETS TCs with equal BW Share for now */
4289         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4290                 if (enabled_tc & (1 << i))
4291                         bw_data.tc_bw_share_credits[i] = 1;
4292         }
4293
4294         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4295                                                    &bw_data, NULL);
4296         if (ret) {
4297                 dev_info(&pf->pdev->dev,
4298                          "veb bw config failed, aq_err=%d\n",
4299                          pf->hw.aq.asq_last_status);
4300                 goto out;
4301         }
4302
4303         /* Update the BW information */
4304         ret = i40e_veb_get_bw_info(veb);
4305         if (ret) {
4306                 dev_info(&pf->pdev->dev,
4307                          "Failed getting veb bw config, aq_err=%d\n",
4308                          pf->hw.aq.asq_last_status);
4309         }
4310
4311 out:
4312         return ret;
4313 }
4314
4315 #ifdef CONFIG_I40E_DCB
4316 /**
4317  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4318  * @pf: PF struct
4319  *
4320  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4321  * the caller would've quiesce all the VSIs before calling
4322  * this function
4323  **/
4324 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4325 {
4326         u8 tc_map = 0;
4327         int ret;
4328         u8 v;
4329
4330         /* Enable the TCs available on PF to all VEBs */
4331         tc_map = i40e_pf_get_tc_map(pf);
4332         for (v = 0; v < I40E_MAX_VEB; v++) {
4333                 if (!pf->veb[v])
4334                         continue;
4335                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4336                 if (ret) {
4337                         dev_info(&pf->pdev->dev,
4338                                  "Failed configuring TC for VEB seid=%d\n",
4339                                  pf->veb[v]->seid);
4340                         /* Will try to configure as many components */
4341                 }
4342         }
4343
4344         /* Update each VSI */
4345         for (v = 0; v < pf->num_alloc_vsi; v++) {
4346                 if (!pf->vsi[v])
4347                         continue;
4348
4349                 /* - Enable all TCs for the LAN VSI
4350 #ifdef I40E_FCOE
4351                  * - For FCoE VSI only enable the TC configured
4352                  *   as per the APP TLV
4353 #endif
4354                  * - For all others keep them at TC0 for now
4355                  */
4356                 if (v == pf->lan_vsi)
4357                         tc_map = i40e_pf_get_tc_map(pf);
4358                 else
4359                         tc_map = i40e_pf_get_default_tc(pf);
4360 #ifdef I40E_FCOE
4361                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
4362                         tc_map = i40e_get_fcoe_tc_map(pf);
4363 #endif /* #ifdef I40E_FCOE */
4364
4365                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4366                 if (ret) {
4367                         dev_info(&pf->pdev->dev,
4368                                  "Failed configuring TC for VSI seid=%d\n",
4369                                  pf->vsi[v]->seid);
4370                         /* Will try to configure as many components */
4371                 } else {
4372                         /* Re-configure VSI vectors based on updated TC map */
4373                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
4374                         if (pf->vsi[v]->netdev)
4375                                 i40e_dcbnl_set_all(pf->vsi[v]);
4376                 }
4377         }
4378 }
4379
4380 /**
4381  * i40e_init_pf_dcb - Initialize DCB configuration
4382  * @pf: PF being configured
4383  *
4384  * Query the current DCB configuration and cache it
4385  * in the hardware structure
4386  **/
4387 static int i40e_init_pf_dcb(struct i40e_pf *pf)
4388 {
4389         struct i40e_hw *hw = &pf->hw;
4390         int err = 0;
4391
4392         if (pf->hw.func_caps.npar_enable)
4393                 goto out;
4394
4395         /* Get the initial DCB configuration */
4396         err = i40e_init_dcb(hw);
4397         if (!err) {
4398                 /* Device/Function is not DCBX capable */
4399                 if ((!hw->func_caps.dcb) ||
4400                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
4401                         dev_info(&pf->pdev->dev,
4402                                  "DCBX offload is not supported or is disabled for this PF.\n");
4403
4404                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
4405                                 goto out;
4406
4407                 } else {
4408                         /* When status is not DISABLED then DCBX in FW */
4409                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
4410                                        DCB_CAP_DCBX_VER_IEEE;
4411
4412                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
4413                         /* Enable DCB tagging only when more than one TC */
4414                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
4415                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
4416                 }
4417         } else {
4418                 dev_info(&pf->pdev->dev, "AQ Querying DCB configuration failed: %d\n",
4419                          pf->hw.aq.asq_last_status);
4420         }
4421
4422 out:
4423         return err;
4424 }
4425 #endif /* CONFIG_I40E_DCB */
4426 #define SPEED_SIZE 14
4427 #define FC_SIZE 8
4428 /**
4429  * i40e_print_link_message - print link up or down
4430  * @vsi: the VSI for which link needs a message
4431  */
4432 static void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
4433 {
4434         char speed[SPEED_SIZE] = "Unknown";
4435         char fc[FC_SIZE] = "RX/TX";
4436
4437         if (!isup) {
4438                 netdev_info(vsi->netdev, "NIC Link is Down\n");
4439                 return;
4440         }
4441
4442         switch (vsi->back->hw.phy.link_info.link_speed) {
4443         case I40E_LINK_SPEED_40GB:
4444                 strlcpy(speed, "40 Gbps", SPEED_SIZE);
4445                 break;
4446         case I40E_LINK_SPEED_10GB:
4447                 strlcpy(speed, "10 Gbps", SPEED_SIZE);
4448                 break;
4449         case I40E_LINK_SPEED_1GB:
4450                 strlcpy(speed, "1000 Mbps", SPEED_SIZE);
4451                 break;
4452         case I40E_LINK_SPEED_100MB:
4453                 strncpy(speed, "100 Mbps", SPEED_SIZE);
4454                 break;
4455         default:
4456                 break;
4457         }
4458
4459         switch (vsi->back->hw.fc.current_mode) {
4460         case I40E_FC_FULL:
4461                 strlcpy(fc, "RX/TX", FC_SIZE);
4462                 break;
4463         case I40E_FC_TX_PAUSE:
4464                 strlcpy(fc, "TX", FC_SIZE);
4465                 break;
4466         case I40E_FC_RX_PAUSE:
4467                 strlcpy(fc, "RX", FC_SIZE);
4468                 break;
4469         default:
4470                 strlcpy(fc, "None", FC_SIZE);
4471                 break;
4472         }
4473
4474         netdev_info(vsi->netdev, "NIC Link is Up %s Full Duplex, Flow Control: %s\n",
4475                     speed, fc);
4476 }
4477
4478 /**
4479  * i40e_up_complete - Finish the last steps of bringing up a connection
4480  * @vsi: the VSI being configured
4481  **/
4482 static int i40e_up_complete(struct i40e_vsi *vsi)
4483 {
4484         struct i40e_pf *pf = vsi->back;
4485         int err;
4486
4487         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4488                 i40e_vsi_configure_msix(vsi);
4489         else
4490                 i40e_configure_msi_and_legacy(vsi);
4491
4492         /* start rings */
4493         err = i40e_vsi_control_rings(vsi, true);
4494         if (err)
4495                 return err;
4496
4497         clear_bit(__I40E_DOWN, &vsi->state);
4498         i40e_napi_enable_all(vsi);
4499         i40e_vsi_enable_irq(vsi);
4500
4501         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
4502             (vsi->netdev)) {
4503                 i40e_print_link_message(vsi, true);
4504                 netif_tx_start_all_queues(vsi->netdev);
4505                 netif_carrier_on(vsi->netdev);
4506         } else if (vsi->netdev) {
4507                 i40e_print_link_message(vsi, false);
4508                 /* need to check for qualified module here*/
4509                 if ((pf->hw.phy.link_info.link_info &
4510                         I40E_AQ_MEDIA_AVAILABLE) &&
4511                     (!(pf->hw.phy.link_info.an_info &
4512                         I40E_AQ_QUALIFIED_MODULE)))
4513                         netdev_err(vsi->netdev,
4514                                    "the driver failed to link because an unqualified module was detected.");
4515         }
4516
4517         /* replay FDIR SB filters */
4518         if (vsi->type == I40E_VSI_FDIR) {
4519                 /* reset fd counters */
4520                 pf->fd_add_err = pf->fd_atr_cnt = 0;
4521                 if (pf->fd_tcp_rule > 0) {
4522                         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
4523                         dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
4524                         pf->fd_tcp_rule = 0;
4525                 }
4526                 i40e_fdir_filter_restore(vsi);
4527         }
4528         i40e_service_event_schedule(pf);
4529
4530         return 0;
4531 }
4532
4533 /**
4534  * i40e_vsi_reinit_locked - Reset the VSI
4535  * @vsi: the VSI being configured
4536  *
4537  * Rebuild the ring structs after some configuration
4538  * has changed, e.g. MTU size.
4539  **/
4540 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
4541 {
4542         struct i40e_pf *pf = vsi->back;
4543
4544         WARN_ON(in_interrupt());
4545         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
4546                 usleep_range(1000, 2000);
4547         i40e_down(vsi);
4548
4549         /* Give a VF some time to respond to the reset.  The
4550          * two second wait is based upon the watchdog cycle in
4551          * the VF driver.
4552          */
4553         if (vsi->type == I40E_VSI_SRIOV)
4554                 msleep(2000);
4555         i40e_up(vsi);
4556         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
4557 }
4558
4559 /**
4560  * i40e_up - Bring the connection back up after being down
4561  * @vsi: the VSI being configured
4562  **/
4563 int i40e_up(struct i40e_vsi *vsi)
4564 {
4565         int err;
4566
4567         err = i40e_vsi_configure(vsi);
4568         if (!err)
4569                 err = i40e_up_complete(vsi);
4570
4571         return err;
4572 }
4573
4574 /**
4575  * i40e_down - Shutdown the connection processing
4576  * @vsi: the VSI being stopped
4577  **/
4578 void i40e_down(struct i40e_vsi *vsi)
4579 {
4580         int i;
4581
4582         /* It is assumed that the caller of this function
4583          * sets the vsi->state __I40E_DOWN bit.
4584          */
4585         if (vsi->netdev) {
4586                 netif_carrier_off(vsi->netdev);
4587                 netif_tx_disable(vsi->netdev);
4588         }
4589         i40e_vsi_disable_irq(vsi);
4590         i40e_vsi_control_rings(vsi, false);
4591         i40e_napi_disable_all(vsi);
4592
4593         for (i = 0; i < vsi->num_queue_pairs; i++) {
4594                 i40e_clean_tx_ring(vsi->tx_rings[i]);
4595                 i40e_clean_rx_ring(vsi->rx_rings[i]);
4596         }
4597 }
4598
4599 /**
4600  * i40e_setup_tc - configure multiple traffic classes
4601  * @netdev: net device to configure
4602  * @tc: number of traffic classes to enable
4603  **/
4604 #ifdef I40E_FCOE
4605 int i40e_setup_tc(struct net_device *netdev, u8 tc)
4606 #else
4607 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
4608 #endif
4609 {
4610         struct i40e_netdev_priv *np = netdev_priv(netdev);
4611         struct i40e_vsi *vsi = np->vsi;
4612         struct i40e_pf *pf = vsi->back;
4613         u8 enabled_tc = 0;
4614         int ret = -EINVAL;
4615         int i;
4616
4617         /* Check if DCB enabled to continue */
4618         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
4619                 netdev_info(netdev, "DCB is not enabled for adapter\n");
4620                 goto exit;
4621         }
4622
4623         /* Check if MFP enabled */
4624         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
4625                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
4626                 goto exit;
4627         }
4628
4629         /* Check whether tc count is within enabled limit */
4630         if (tc > i40e_pf_get_num_tc(pf)) {
4631                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
4632                 goto exit;
4633         }
4634
4635         /* Generate TC map for number of tc requested */
4636         for (i = 0; i < tc; i++)
4637                 enabled_tc |= (1 << i);
4638
4639         /* Requesting same TC configuration as already enabled */
4640         if (enabled_tc == vsi->tc_config.enabled_tc)
4641                 return 0;
4642
4643         /* Quiesce VSI queues */
4644         i40e_quiesce_vsi(vsi);
4645
4646         /* Configure VSI for enabled TCs */
4647         ret = i40e_vsi_config_tc(vsi, enabled_tc);
4648         if (ret) {
4649                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
4650                             vsi->seid);
4651                 goto exit;
4652         }
4653
4654         /* Unquiesce VSI */
4655         i40e_unquiesce_vsi(vsi);
4656
4657 exit:
4658         return ret;
4659 }
4660
4661 /**
4662  * i40e_open - Called when a network interface is made active
4663  * @netdev: network interface device structure
4664  *
4665  * The open entry point is called when a network interface is made
4666  * active by the system (IFF_UP).  At this point all resources needed
4667  * for transmit and receive operations are allocated, the interrupt
4668  * handler is registered with the OS, the netdev watchdog subtask is
4669  * enabled, and the stack is notified that the interface is ready.
4670  *
4671  * Returns 0 on success, negative value on failure
4672  **/
4673 #ifdef I40E_FCOE
4674 int i40e_open(struct net_device *netdev)
4675 #else
4676 static int i40e_open(struct net_device *netdev)
4677 #endif
4678 {
4679         struct i40e_netdev_priv *np = netdev_priv(netdev);
4680         struct i40e_vsi *vsi = np->vsi;
4681         struct i40e_pf *pf = vsi->back;
4682         int err;
4683
4684         /* disallow open during test or if eeprom is broken */
4685         if (test_bit(__I40E_TESTING, &pf->state) ||
4686             test_bit(__I40E_BAD_EEPROM, &pf->state))
4687                 return -EBUSY;
4688
4689         netif_carrier_off(netdev);
4690
4691         err = i40e_vsi_open(vsi);
4692         if (err)
4693                 return err;
4694
4695         /* configure global TSO hardware offload settings */
4696         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
4697                                                        TCP_FLAG_FIN) >> 16);
4698         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
4699                                                        TCP_FLAG_FIN |
4700                                                        TCP_FLAG_CWR) >> 16);
4701         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
4702
4703 #ifdef CONFIG_I40E_VXLAN
4704         vxlan_get_rx_port(netdev);
4705 #endif
4706
4707         return 0;
4708 }
4709
4710 /**
4711  * i40e_vsi_open -
4712  * @vsi: the VSI to open
4713  *
4714  * Finish initialization of the VSI.
4715  *
4716  * Returns 0 on success, negative value on failure
4717  **/
4718 int i40e_vsi_open(struct i40e_vsi *vsi)
4719 {
4720         struct i40e_pf *pf = vsi->back;
4721         char int_name[IFNAMSIZ];
4722         int err;
4723
4724         /* allocate descriptors */
4725         err = i40e_vsi_setup_tx_resources(vsi);
4726         if (err)
4727                 goto err_setup_tx;
4728         err = i40e_vsi_setup_rx_resources(vsi);
4729         if (err)
4730                 goto err_setup_rx;
4731
4732         err = i40e_vsi_configure(vsi);
4733         if (err)
4734                 goto err_setup_rx;
4735
4736         if (vsi->netdev) {
4737                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
4738                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
4739                 err = i40e_vsi_request_irq(vsi, int_name);
4740                 if (err)
4741                         goto err_setup_rx;
4742
4743                 /* Notify the stack of the actual queue counts. */
4744                 err = netif_set_real_num_tx_queues(vsi->netdev,
4745                                                    vsi->num_queue_pairs);
4746                 if (err)
4747                         goto err_set_queues;
4748
4749                 err = netif_set_real_num_rx_queues(vsi->netdev,
4750                                                    vsi->num_queue_pairs);
4751                 if (err)
4752                         goto err_set_queues;
4753
4754         } else if (vsi->type == I40E_VSI_FDIR) {
4755                 snprintf(int_name, sizeof(int_name) - 1, "%s-fdir",
4756                          dev_driver_string(&pf->pdev->dev));
4757                 err = i40e_vsi_request_irq(vsi, int_name);
4758         } else {
4759                 err = -EINVAL;
4760                 goto err_setup_rx;
4761         }
4762
4763         err = i40e_up_complete(vsi);
4764         if (err)
4765                 goto err_up_complete;
4766
4767         return 0;
4768
4769 err_up_complete:
4770         i40e_down(vsi);
4771 err_set_queues:
4772         i40e_vsi_free_irq(vsi);
4773 err_setup_rx:
4774         i40e_vsi_free_rx_resources(vsi);
4775 err_setup_tx:
4776         i40e_vsi_free_tx_resources(vsi);
4777         if (vsi == pf->vsi[pf->lan_vsi])
4778                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
4779
4780         return err;
4781 }
4782
4783 /**
4784  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
4785  * @pf: Pointer to pf
4786  *
4787  * This function destroys the hlist where all the Flow Director
4788  * filters were saved.
4789  **/
4790 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
4791 {
4792         struct i40e_fdir_filter *filter;
4793         struct hlist_node *node2;
4794
4795         hlist_for_each_entry_safe(filter, node2,
4796                                   &pf->fdir_filter_list, fdir_node) {
4797                 hlist_del(&filter->fdir_node);
4798                 kfree(filter);
4799         }
4800         pf->fdir_pf_active_filters = 0;
4801 }
4802
4803 /**
4804  * i40e_close - Disables a network interface
4805  * @netdev: network interface device structure
4806  *
4807  * The close entry point is called when an interface is de-activated
4808  * by the OS.  The hardware is still under the driver's control, but
4809  * this netdev interface is disabled.
4810  *
4811  * Returns 0, this is not allowed to fail
4812  **/
4813 #ifdef I40E_FCOE
4814 int i40e_close(struct net_device *netdev)
4815 #else
4816 static int i40e_close(struct net_device *netdev)
4817 #endif
4818 {
4819         struct i40e_netdev_priv *np = netdev_priv(netdev);
4820         struct i40e_vsi *vsi = np->vsi;
4821
4822         i40e_vsi_close(vsi);
4823
4824         return 0;
4825 }
4826
4827 /**
4828  * i40e_do_reset - Start a PF or Core Reset sequence
4829  * @pf: board private structure
4830  * @reset_flags: which reset is requested
4831  *
4832  * The essential difference in resets is that the PF Reset
4833  * doesn't clear the packet buffers, doesn't reset the PE
4834  * firmware, and doesn't bother the other PFs on the chip.
4835  **/
4836 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
4837 {
4838         u32 val;
4839
4840         WARN_ON(in_interrupt());
4841
4842         if (i40e_check_asq_alive(&pf->hw))
4843                 i40e_vc_notify_reset(pf);
4844
4845         /* do the biggest reset indicated */
4846         if (reset_flags & (1 << __I40E_GLOBAL_RESET_REQUESTED)) {
4847
4848                 /* Request a Global Reset
4849                  *
4850                  * This will start the chip's countdown to the actual full
4851                  * chip reset event, and a warning interrupt to be sent
4852                  * to all PFs, including the requestor.  Our handler
4853                  * for the warning interrupt will deal with the shutdown
4854                  * and recovery of the switch setup.
4855                  */
4856                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
4857                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4858                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
4859                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4860
4861         } else if (reset_flags & (1 << __I40E_CORE_RESET_REQUESTED)) {
4862
4863                 /* Request a Core Reset
4864                  *
4865                  * Same as Global Reset, except does *not* include the MAC/PHY
4866                  */
4867                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
4868                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4869                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
4870                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4871                 i40e_flush(&pf->hw);
4872
4873         } else if (reset_flags & (1 << __I40E_EMP_RESET_REQUESTED)) {
4874
4875                 /* Request a Firmware Reset
4876                  *
4877                  * Same as Global reset, plus restarting the
4878                  * embedded firmware engine.
4879                  */
4880                 /* enable EMP Reset */
4881                 val = rd32(&pf->hw, I40E_GLGEN_RSTENA_EMP);
4882                 val |= I40E_GLGEN_RSTENA_EMP_EMP_RST_ENA_MASK;
4883                 wr32(&pf->hw, I40E_GLGEN_RSTENA_EMP, val);
4884
4885                 /* force the reset */
4886                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4887                 val |= I40E_GLGEN_RTRIG_EMPFWR_MASK;
4888                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4889                 i40e_flush(&pf->hw);
4890
4891         } else if (reset_flags & (1 << __I40E_PF_RESET_REQUESTED)) {
4892
4893                 /* Request a PF Reset
4894                  *
4895                  * Resets only the PF-specific registers
4896                  *
4897                  * This goes directly to the tear-down and rebuild of
4898                  * the switch, since we need to do all the recovery as
4899                  * for the Core Reset.
4900                  */
4901                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
4902                 i40e_handle_reset_warning(pf);
4903
4904         } else if (reset_flags & (1 << __I40E_REINIT_REQUESTED)) {
4905                 int v;
4906
4907                 /* Find the VSI(s) that requested a re-init */
4908                 dev_info(&pf->pdev->dev,
4909                          "VSI reinit requested\n");
4910                 for (v = 0; v < pf->num_alloc_vsi; v++) {
4911                         struct i40e_vsi *vsi = pf->vsi[v];
4912                         if (vsi != NULL &&
4913                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
4914                                 i40e_vsi_reinit_locked(pf->vsi[v]);
4915                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
4916                         }
4917                 }
4918
4919                 /* no further action needed, so return now */
4920                 return;
4921         } else if (reset_flags & (1 << __I40E_DOWN_REQUESTED)) {
4922                 int v;
4923
4924                 /* Find the VSI(s) that needs to be brought down */
4925                 dev_info(&pf->pdev->dev, "VSI down requested\n");
4926                 for (v = 0; v < pf->num_alloc_vsi; v++) {
4927                         struct i40e_vsi *vsi = pf->vsi[v];
4928                         if (vsi != NULL &&
4929                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
4930                                 set_bit(__I40E_DOWN, &vsi->state);
4931                                 i40e_down(vsi);
4932                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
4933                         }
4934                 }
4935
4936                 /* no further action needed, so return now */
4937                 return;
4938         } else {
4939                 dev_info(&pf->pdev->dev,
4940                          "bad reset request 0x%08x\n", reset_flags);
4941                 return;
4942         }
4943 }
4944
4945 #ifdef CONFIG_I40E_DCB
4946 /**
4947  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
4948  * @pf: board private structure
4949  * @old_cfg: current DCB config
4950  * @new_cfg: new DCB config
4951  **/
4952 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
4953                             struct i40e_dcbx_config *old_cfg,
4954                             struct i40e_dcbx_config *new_cfg)
4955 {
4956         bool need_reconfig = false;
4957
4958         /* Check if ETS configuration has changed */
4959         if (memcmp(&new_cfg->etscfg,
4960                    &old_cfg->etscfg,
4961                    sizeof(new_cfg->etscfg))) {
4962                 /* If Priority Table has changed reconfig is needed */
4963                 if (memcmp(&new_cfg->etscfg.prioritytable,
4964                            &old_cfg->etscfg.prioritytable,
4965                            sizeof(new_cfg->etscfg.prioritytable))) {
4966                         need_reconfig = true;
4967                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
4968                 }
4969
4970                 if (memcmp(&new_cfg->etscfg.tcbwtable,
4971                            &old_cfg->etscfg.tcbwtable,
4972                            sizeof(new_cfg->etscfg.tcbwtable)))
4973                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
4974
4975                 if (memcmp(&new_cfg->etscfg.tsatable,
4976                            &old_cfg->etscfg.tsatable,
4977                            sizeof(new_cfg->etscfg.tsatable)))
4978                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
4979         }
4980
4981         /* Check if PFC configuration has changed */
4982         if (memcmp(&new_cfg->pfc,
4983                    &old_cfg->pfc,
4984                    sizeof(new_cfg->pfc))) {
4985                 need_reconfig = true;
4986                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
4987         }
4988
4989         /* Check if APP Table has changed */
4990         if (memcmp(&new_cfg->app,
4991                    &old_cfg->app,
4992                    sizeof(new_cfg->app))) {
4993                 need_reconfig = true;
4994                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
4995         }
4996
4997         return need_reconfig;
4998 }
4999
5000 /**
5001  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5002  * @pf: board private structure
5003  * @e: event info posted on ARQ
5004  **/
5005 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5006                                   struct i40e_arq_event_info *e)
5007 {
5008         struct i40e_aqc_lldp_get_mib *mib =
5009                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5010         struct i40e_hw *hw = &pf->hw;
5011         struct i40e_dcbx_config *dcbx_cfg = &hw->local_dcbx_config;
5012         struct i40e_dcbx_config tmp_dcbx_cfg;
5013         bool need_reconfig = false;
5014         int ret = 0;
5015         u8 type;
5016
5017         /* Not DCB capable or capability disabled */
5018         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5019                 return ret;
5020
5021         /* Ignore if event is not for Nearest Bridge */
5022         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5023                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5024         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5025                 return ret;
5026
5027         /* Check MIB Type and return if event for Remote MIB update */
5028         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5029         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5030                 /* Update the remote cached instance and return */
5031                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5032                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5033                                 &hw->remote_dcbx_config);
5034                 goto exit;
5035         }
5036
5037         /* Convert/store the DCBX data from LLDPDU temporarily */
5038         memset(&tmp_dcbx_cfg, 0, sizeof(tmp_dcbx_cfg));
5039         ret = i40e_lldp_to_dcb_config(e->msg_buf, &tmp_dcbx_cfg);
5040         if (ret) {
5041                 /* Error in LLDPDU parsing return */
5042                 dev_info(&pf->pdev->dev, "Failed parsing LLDPDU from event buffer\n");
5043                 goto exit;
5044         }
5045
5046         /* No change detected in DCBX configs */
5047         if (!memcmp(&tmp_dcbx_cfg, dcbx_cfg, sizeof(tmp_dcbx_cfg))) {
5048                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5049                 goto exit;
5050         }
5051
5052         need_reconfig = i40e_dcb_need_reconfig(pf, dcbx_cfg, &tmp_dcbx_cfg);
5053
5054         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg);
5055
5056         /* Overwrite the new configuration */
5057         *dcbx_cfg = tmp_dcbx_cfg;
5058
5059         if (!need_reconfig)
5060                 goto exit;
5061
5062         /* Enable DCB tagging only when more than one TC */
5063         if (i40e_dcb_get_num_tc(dcbx_cfg) > 1)
5064                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5065         else
5066                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5067
5068         /* Reconfiguration needed quiesce all VSIs */
5069         i40e_pf_quiesce_all_vsi(pf);
5070
5071         /* Changes in configuration update VEB/VSI */
5072         i40e_dcb_reconfigure(pf);
5073
5074         i40e_pf_unquiesce_all_vsi(pf);
5075 exit:
5076         return ret;
5077 }
5078 #endif /* CONFIG_I40E_DCB */
5079
5080 /**
5081  * i40e_do_reset_safe - Protected reset path for userland calls.
5082  * @pf: board private structure
5083  * @reset_flags: which reset is requested
5084  *
5085  **/
5086 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5087 {
5088         rtnl_lock();
5089         i40e_do_reset(pf, reset_flags);
5090         rtnl_unlock();
5091 }
5092
5093 /**
5094  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5095  * @pf: board private structure
5096  * @e: event info posted on ARQ
5097  *
5098  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5099  * and VF queues
5100  **/
5101 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5102                                            struct i40e_arq_event_info *e)
5103 {
5104         struct i40e_aqc_lan_overflow *data =
5105                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5106         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5107         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5108         struct i40e_hw *hw = &pf->hw;
5109         struct i40e_vf *vf;
5110         u16 vf_id;
5111
5112         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5113                 queue, qtx_ctl);
5114
5115         /* Queue belongs to VF, find the VF and issue VF reset */
5116         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5117             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5118                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5119                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5120                 vf_id -= hw->func_caps.vf_base_id;
5121                 vf = &pf->vf[vf_id];
5122                 i40e_vc_notify_vf_reset(vf);
5123                 /* Allow VF to process pending reset notification */
5124                 msleep(20);
5125                 i40e_reset_vf(vf, false);
5126         }
5127 }
5128
5129 /**
5130  * i40e_service_event_complete - Finish up the service event
5131  * @pf: board private structure
5132  **/
5133 static void i40e_service_event_complete(struct i40e_pf *pf)
5134 {
5135         BUG_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5136
5137         /* flush memory to make sure state is correct before next watchog */
5138         smp_mb__before_atomic();
5139         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5140 }
5141
5142 /**
5143  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5144  * @pf: board private structure
5145  **/
5146 int i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5147 {
5148         int val, fcnt_prog;
5149
5150         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5151         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5152         return fcnt_prog;
5153 }
5154
5155 /**
5156  * i40e_get_current_fd_count - Get the count of total FD filters programmed
5157  * @pf: board private structure
5158  **/
5159 int i40e_get_current_fd_count(struct i40e_pf *pf)
5160 {
5161         int val, fcnt_prog;
5162         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5163         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5164                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5165                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5166         return fcnt_prog;
5167 }
5168
5169 /**
5170  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5171  * @pf: board private structure
5172  **/
5173 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5174 {
5175         u32 fcnt_prog, fcnt_avail;
5176
5177         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5178                 return;
5179
5180         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5181          * to re-enable
5182          */
5183         fcnt_prog = i40e_get_cur_guaranteed_fd_count(pf);
5184         fcnt_avail = pf->fdir_pf_filter_count;
5185         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5186             (pf->fd_add_err == 0) ||
5187             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5188                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5189                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5190                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5191                         dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5192                 }
5193         }
5194         /* Wait for some more space to be available to turn on ATR */
5195         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5196                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5197                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5198                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5199                         dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
5200                 }
5201         }
5202 }
5203
5204 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5205 /**
5206  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5207  * @pf: board private structure
5208  **/
5209 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5210 {
5211         int flush_wait_retry = 50;
5212         int reg;
5213
5214         if (time_after(jiffies, pf->fd_flush_timestamp +
5215                                 (I40E_MIN_FD_FLUSH_INTERVAL * HZ))) {
5216                 set_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5217                 pf->fd_flush_timestamp = jiffies;
5218                 pf->auto_disable_flags |= I40E_FLAG_FD_SB_ENABLED;
5219                 pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5220                 /* flush all filters */
5221                 wr32(&pf->hw, I40E_PFQF_CTL_1,
5222                      I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
5223                 i40e_flush(&pf->hw);
5224                 pf->fd_flush_cnt++;
5225                 pf->fd_add_err = 0;
5226                 do {
5227                         /* Check FD flush status every 5-6msec */
5228                         usleep_range(5000, 6000);
5229                         reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
5230                         if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
5231                                 break;
5232                 } while (flush_wait_retry--);
5233                 if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
5234                         dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
5235                 } else {
5236                         /* replay sideband filters */
5237                         i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
5238
5239                         pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
5240                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5241                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5242                         clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5243                         dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
5244                 }
5245         }
5246 }
5247
5248 /**
5249  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
5250  * @pf: board private structure
5251  **/
5252 int i40e_get_current_atr_cnt(struct i40e_pf *pf)
5253 {
5254         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
5255 }
5256
5257 /* We can see up to 256 filter programming desc in transit if the filters are
5258  * being applied really fast; before we see the first
5259  * filter miss error on Rx queue 0. Accumulating enough error messages before
5260  * reacting will make sure we don't cause flush too often.
5261  */
5262 #define I40E_MAX_FD_PROGRAM_ERROR 256
5263
5264 /**
5265  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
5266  * @pf: board private structure
5267  **/
5268 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
5269 {
5270
5271         /* if interface is down do nothing */
5272         if (test_bit(__I40E_DOWN, &pf->state))
5273                 return;
5274
5275         if ((pf->fd_add_err >= I40E_MAX_FD_PROGRAM_ERROR) &&
5276             (i40e_get_current_atr_cnt(pf) >= pf->fd_atr_cnt) &&
5277             (i40e_get_current_atr_cnt(pf) > pf->fdir_pf_filter_count))
5278                 i40e_fdir_flush_and_replay(pf);
5279
5280         i40e_fdir_check_and_reenable(pf);
5281
5282 }
5283
5284 /**
5285  * i40e_vsi_link_event - notify VSI of a link event
5286  * @vsi: vsi to be notified
5287  * @link_up: link up or down
5288  **/
5289 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
5290 {
5291         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
5292                 return;
5293
5294         switch (vsi->type) {
5295         case I40E_VSI_MAIN:
5296 #ifdef I40E_FCOE
5297         case I40E_VSI_FCOE:
5298 #endif
5299                 if (!vsi->netdev || !vsi->netdev_registered)
5300                         break;
5301
5302                 if (link_up) {
5303                         netif_carrier_on(vsi->netdev);
5304                         netif_tx_wake_all_queues(vsi->netdev);
5305                 } else {
5306                         netif_carrier_off(vsi->netdev);
5307                         netif_tx_stop_all_queues(vsi->netdev);
5308                 }
5309                 break;
5310
5311         case I40E_VSI_SRIOV:
5312                 break;
5313
5314         case I40E_VSI_VMDQ2:
5315         case I40E_VSI_CTRL:
5316         case I40E_VSI_MIRROR:
5317         default:
5318                 /* there is no notification for other VSIs */
5319                 break;
5320         }
5321 }
5322
5323 /**
5324  * i40e_veb_link_event - notify elements on the veb of a link event
5325  * @veb: veb to be notified
5326  * @link_up: link up or down
5327  **/
5328 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
5329 {
5330         struct i40e_pf *pf;
5331         int i;
5332
5333         if (!veb || !veb->pf)
5334                 return;
5335         pf = veb->pf;
5336
5337         /* depth first... */
5338         for (i = 0; i < I40E_MAX_VEB; i++)
5339                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
5340                         i40e_veb_link_event(pf->veb[i], link_up);
5341
5342         /* ... now the local VSIs */
5343         for (i = 0; i < pf->num_alloc_vsi; i++)
5344                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
5345                         i40e_vsi_link_event(pf->vsi[i], link_up);
5346 }
5347
5348 /**
5349  * i40e_link_event - Update netif_carrier status
5350  * @pf: board private structure
5351  **/
5352 static void i40e_link_event(struct i40e_pf *pf)
5353 {
5354         bool new_link, old_link;
5355
5356         /* set this to force the get_link_status call to refresh state */
5357         pf->hw.phy.get_link_info = true;
5358
5359         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
5360         new_link = i40e_get_link_status(&pf->hw);
5361
5362         if (new_link == old_link &&
5363             new_link == netif_carrier_ok(pf->vsi[pf->lan_vsi]->netdev))
5364                 return;
5365         if (!test_bit(__I40E_DOWN, &pf->vsi[pf->lan_vsi]->state))
5366                 i40e_print_link_message(pf->vsi[pf->lan_vsi], new_link);
5367
5368         /* Notify the base of the switch tree connected to
5369          * the link.  Floating VEBs are not notified.
5370          */
5371         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
5372                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
5373         else
5374                 i40e_vsi_link_event(pf->vsi[pf->lan_vsi], new_link);
5375
5376         if (pf->vf)
5377                 i40e_vc_notify_link_state(pf);
5378
5379         if (pf->flags & I40E_FLAG_PTP)
5380                 i40e_ptp_set_increment(pf);
5381 }
5382
5383 /**
5384  * i40e_check_hang_subtask - Check for hung queues and dropped interrupts
5385  * @pf: board private structure
5386  *
5387  * Set the per-queue flags to request a check for stuck queues in the irq
5388  * clean functions, then force interrupts to be sure the irq clean is called.
5389  **/
5390 static void i40e_check_hang_subtask(struct i40e_pf *pf)
5391 {
5392         int i, v;
5393
5394         /* If we're down or resetting, just bail */
5395         if (test_bit(__I40E_CONFIG_BUSY, &pf->state))
5396                 return;
5397
5398         /* for each VSI/netdev
5399          *     for each Tx queue
5400          *         set the check flag
5401          *     for each q_vector
5402          *         force an interrupt
5403          */
5404         for (v = 0; v < pf->num_alloc_vsi; v++) {
5405                 struct i40e_vsi *vsi = pf->vsi[v];
5406                 int armed = 0;
5407
5408                 if (!pf->vsi[v] ||
5409                     test_bit(__I40E_DOWN, &vsi->state) ||
5410                     (vsi->netdev && !netif_carrier_ok(vsi->netdev)))
5411                         continue;
5412
5413                 for (i = 0; i < vsi->num_queue_pairs; i++) {
5414                         set_check_for_tx_hang(vsi->tx_rings[i]);
5415                         if (test_bit(__I40E_HANG_CHECK_ARMED,
5416                                      &vsi->tx_rings[i]->state))
5417                                 armed++;
5418                 }
5419
5420                 if (armed) {
5421                         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
5422                                 wr32(&vsi->back->hw, I40E_PFINT_DYN_CTL0,
5423                                      (I40E_PFINT_DYN_CTL0_INTENA_MASK |
5424                                       I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK));
5425                         } else {
5426                                 u16 vec = vsi->base_vector - 1;
5427                                 u32 val = (I40E_PFINT_DYN_CTLN_INTENA_MASK |
5428                                            I40E_PFINT_DYN_CTLN_SWINT_TRIG_MASK);
5429                                 for (i = 0; i < vsi->num_q_vectors; i++, vec++)
5430                                         wr32(&vsi->back->hw,
5431                                              I40E_PFINT_DYN_CTLN(vec), val);
5432                         }
5433                         i40e_flush(&vsi->back->hw);
5434                 }
5435         }
5436 }
5437
5438 /**
5439  * i40e_watchdog_subtask - Check and bring link up
5440  * @pf: board private structure
5441  **/
5442 static void i40e_watchdog_subtask(struct i40e_pf *pf)
5443 {
5444         int i;
5445
5446         /* if interface is down do nothing */
5447         if (test_bit(__I40E_DOWN, &pf->state) ||
5448             test_bit(__I40E_CONFIG_BUSY, &pf->state))
5449                 return;
5450
5451         /* Update the stats for active netdevs so the network stack
5452          * can look at updated numbers whenever it cares to
5453          */
5454         for (i = 0; i < pf->num_alloc_vsi; i++)
5455                 if (pf->vsi[i] && pf->vsi[i]->netdev)
5456                         i40e_update_stats(pf->vsi[i]);
5457
5458         /* Update the stats for the active switching components */
5459         for (i = 0; i < I40E_MAX_VEB; i++)
5460                 if (pf->veb[i])
5461                         i40e_update_veb_stats(pf->veb[i]);
5462
5463         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
5464 }
5465
5466 /**
5467  * i40e_reset_subtask - Set up for resetting the device and driver
5468  * @pf: board private structure
5469  **/
5470 static void i40e_reset_subtask(struct i40e_pf *pf)
5471 {
5472         u32 reset_flags = 0;
5473
5474         rtnl_lock();
5475         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
5476                 reset_flags |= (1 << __I40E_REINIT_REQUESTED);
5477                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
5478         }
5479         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
5480                 reset_flags |= (1 << __I40E_PF_RESET_REQUESTED);
5481                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5482         }
5483         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
5484                 reset_flags |= (1 << __I40E_CORE_RESET_REQUESTED);
5485                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
5486         }
5487         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
5488                 reset_flags |= (1 << __I40E_GLOBAL_RESET_REQUESTED);
5489                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
5490         }
5491         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
5492                 reset_flags |= (1 << __I40E_DOWN_REQUESTED);
5493                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
5494         }
5495
5496         /* If there's a recovery already waiting, it takes
5497          * precedence before starting a new reset sequence.
5498          */
5499         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
5500                 i40e_handle_reset_warning(pf);
5501                 goto unlock;
5502         }
5503
5504         /* If we're already down or resetting, just bail */
5505         if (reset_flags &&
5506             !test_bit(__I40E_DOWN, &pf->state) &&
5507             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
5508                 i40e_do_reset(pf, reset_flags);
5509
5510 unlock:
5511         rtnl_unlock();
5512 }
5513
5514 /**
5515  * i40e_handle_link_event - Handle link event
5516  * @pf: board private structure
5517  * @e: event info posted on ARQ
5518  **/
5519 static void i40e_handle_link_event(struct i40e_pf *pf,
5520                                    struct i40e_arq_event_info *e)
5521 {
5522         struct i40e_hw *hw = &pf->hw;
5523         struct i40e_aqc_get_link_status *status =
5524                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
5525         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
5526
5527         /* save off old link status information */
5528         memcpy(&pf->hw.phy.link_info_old, hw_link_info,
5529                sizeof(pf->hw.phy.link_info_old));
5530
5531         /* Do a new status request to re-enable LSE reporting
5532          * and load new status information into the hw struct
5533          * This completely ignores any state information
5534          * in the ARQ event info, instead choosing to always
5535          * issue the AQ update link status command.
5536          */
5537         i40e_link_event(pf);
5538
5539         /* check for unqualified module, if link is down */
5540         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
5541             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
5542             (!(status->link_info & I40E_AQ_LINK_UP)))
5543                 dev_err(&pf->pdev->dev,
5544                         "The driver failed to link because an unqualified module was detected.\n");
5545 }
5546
5547 /**
5548  * i40e_clean_adminq_subtask - Clean the AdminQ rings
5549  * @pf: board private structure
5550  **/
5551 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
5552 {
5553         struct i40e_arq_event_info event;
5554         struct i40e_hw *hw = &pf->hw;
5555         u16 pending, i = 0;
5556         i40e_status ret;
5557         u16 opcode;
5558         u32 oldval;
5559         u32 val;
5560
5561         /* Do not run clean AQ when PF reset fails */
5562         if (test_bit(__I40E_RESET_FAILED, &pf->state))
5563                 return;
5564
5565         /* check for error indications */
5566         val = rd32(&pf->hw, pf->hw.aq.arq.len);
5567         oldval = val;
5568         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
5569                 dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
5570                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
5571         }
5572         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
5573                 dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
5574                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
5575         }
5576         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
5577                 dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
5578                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
5579         }
5580         if (oldval != val)
5581                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
5582
5583         val = rd32(&pf->hw, pf->hw.aq.asq.len);
5584         oldval = val;
5585         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
5586                 dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
5587                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
5588         }
5589         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
5590                 dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
5591                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
5592         }
5593         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
5594                 dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
5595                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
5596         }
5597         if (oldval != val)
5598                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
5599
5600         event.msg_size = I40E_MAX_AQ_BUF_SIZE;
5601         event.msg_buf = kzalloc(event.msg_size, GFP_KERNEL);
5602         if (!event.msg_buf)
5603                 return;
5604
5605         do {
5606                 event.msg_size = I40E_MAX_AQ_BUF_SIZE; /* reinit each time */
5607                 ret = i40e_clean_arq_element(hw, &event, &pending);
5608                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
5609                         break;
5610                 else if (ret) {
5611                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
5612                         break;
5613                 }
5614
5615                 opcode = le16_to_cpu(event.desc.opcode);
5616                 switch (opcode) {
5617
5618                 case i40e_aqc_opc_get_link_status:
5619                         i40e_handle_link_event(pf, &event);
5620                         break;
5621                 case i40e_aqc_opc_send_msg_to_pf:
5622                         ret = i40e_vc_process_vf_msg(pf,
5623                                         le16_to_cpu(event.desc.retval),
5624                                         le32_to_cpu(event.desc.cookie_high),
5625                                         le32_to_cpu(event.desc.cookie_low),
5626                                         event.msg_buf,
5627                                         event.msg_size);
5628                         break;
5629                 case i40e_aqc_opc_lldp_update_mib:
5630                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
5631 #ifdef CONFIG_I40E_DCB
5632                         rtnl_lock();
5633                         ret = i40e_handle_lldp_event(pf, &event);
5634                         rtnl_unlock();
5635 #endif /* CONFIG_I40E_DCB */
5636                         break;
5637                 case i40e_aqc_opc_event_lan_overflow:
5638                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
5639                         i40e_handle_lan_overflow_event(pf, &event);
5640                         break;
5641                 case i40e_aqc_opc_send_msg_to_peer:
5642                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
5643                         break;
5644                 default:
5645                         dev_info(&pf->pdev->dev,
5646                                  "ARQ Error: Unknown event 0x%04x received\n",
5647                                  opcode);
5648                         break;
5649                 }
5650         } while (pending && (i++ < pf->adminq_work_limit));
5651
5652         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
5653         /* re-enable Admin queue interrupt cause */
5654         val = rd32(hw, I40E_PFINT_ICR0_ENA);
5655         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
5656         wr32(hw, I40E_PFINT_ICR0_ENA, val);
5657         i40e_flush(hw);
5658
5659         kfree(event.msg_buf);
5660 }
5661
5662 /**
5663  * i40e_verify_eeprom - make sure eeprom is good to use
5664  * @pf: board private structure
5665  **/
5666 static void i40e_verify_eeprom(struct i40e_pf *pf)
5667 {
5668         int err;
5669
5670         err = i40e_diag_eeprom_test(&pf->hw);
5671         if (err) {
5672                 /* retry in case of garbage read */
5673                 err = i40e_diag_eeprom_test(&pf->hw);
5674                 if (err) {
5675                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
5676                                  err);
5677                         set_bit(__I40E_BAD_EEPROM, &pf->state);
5678                 }
5679         }
5680
5681         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
5682                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
5683                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
5684         }
5685 }
5686
5687 /**
5688  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
5689  * @veb: pointer to the VEB instance
5690  *
5691  * This is a recursive function that first builds the attached VSIs then
5692  * recurses in to build the next layer of VEB.  We track the connections
5693  * through our own index numbers because the seid's from the HW could
5694  * change across the reset.
5695  **/
5696 static int i40e_reconstitute_veb(struct i40e_veb *veb)
5697 {
5698         struct i40e_vsi *ctl_vsi = NULL;
5699         struct i40e_pf *pf = veb->pf;
5700         int v, veb_idx;
5701         int ret;
5702
5703         /* build VSI that owns this VEB, temporarily attached to base VEB */
5704         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
5705                 if (pf->vsi[v] &&
5706                     pf->vsi[v]->veb_idx == veb->idx &&
5707                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
5708                         ctl_vsi = pf->vsi[v];
5709                         break;
5710                 }
5711         }
5712         if (!ctl_vsi) {
5713                 dev_info(&pf->pdev->dev,
5714                          "missing owner VSI for veb_idx %d\n", veb->idx);
5715                 ret = -ENOENT;
5716                 goto end_reconstitute;
5717         }
5718         if (ctl_vsi != pf->vsi[pf->lan_vsi])
5719                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
5720         ret = i40e_add_vsi(ctl_vsi);
5721         if (ret) {
5722                 dev_info(&pf->pdev->dev,
5723                          "rebuild of owner VSI failed: %d\n", ret);
5724                 goto end_reconstitute;
5725         }
5726         i40e_vsi_reset_stats(ctl_vsi);
5727
5728         /* create the VEB in the switch and move the VSI onto the VEB */
5729         ret = i40e_add_veb(veb, ctl_vsi);
5730         if (ret)
5731                 goto end_reconstitute;
5732
5733         /* create the remaining VSIs attached to this VEB */
5734         for (v = 0; v < pf->num_alloc_vsi; v++) {
5735                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
5736                         continue;
5737
5738                 if (pf->vsi[v]->veb_idx == veb->idx) {
5739                         struct i40e_vsi *vsi = pf->vsi[v];
5740                         vsi->uplink_seid = veb->seid;
5741                         ret = i40e_add_vsi(vsi);
5742                         if (ret) {
5743                                 dev_info(&pf->pdev->dev,
5744                                          "rebuild of vsi_idx %d failed: %d\n",
5745                                          v, ret);
5746                                 goto end_reconstitute;
5747                         }
5748                         i40e_vsi_reset_stats(vsi);
5749                 }
5750         }
5751
5752         /* create any VEBs attached to this VEB - RECURSION */
5753         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
5754                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
5755                         pf->veb[veb_idx]->uplink_seid = veb->seid;
5756                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
5757                         if (ret)
5758                                 break;
5759                 }
5760         }
5761
5762 end_reconstitute:
5763         return ret;
5764 }
5765
5766 /**
5767  * i40e_get_capabilities - get info about the HW
5768  * @pf: the PF struct
5769  **/
5770 static int i40e_get_capabilities(struct i40e_pf *pf)
5771 {
5772         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
5773         u16 data_size;
5774         int buf_len;
5775         int err;
5776
5777         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
5778         do {
5779                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
5780                 if (!cap_buf)
5781                         return -ENOMEM;
5782
5783                 /* this loads the data into the hw struct for us */
5784                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
5785                                             &data_size,
5786                                             i40e_aqc_opc_list_func_capabilities,
5787                                             NULL);
5788                 /* data loaded, buffer no longer needed */
5789                 kfree(cap_buf);
5790
5791                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
5792                         /* retry with a larger buffer */
5793                         buf_len = data_size;
5794                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
5795                         dev_info(&pf->pdev->dev,
5796                                  "capability discovery failed: aq=%d\n",
5797                                  pf->hw.aq.asq_last_status);
5798                         return -ENODEV;
5799                 }
5800         } while (err);
5801
5802         if (((pf->hw.aq.fw_maj_ver == 2) && (pf->hw.aq.fw_min_ver < 22)) ||
5803             (pf->hw.aq.fw_maj_ver < 2)) {
5804                 pf->hw.func_caps.num_msix_vectors++;
5805                 pf->hw.func_caps.num_msix_vectors_vf++;
5806         }
5807
5808         if (pf->hw.debug_mask & I40E_DEBUG_USER)
5809                 dev_info(&pf->pdev->dev,
5810                          "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",
5811                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
5812                          pf->hw.func_caps.num_msix_vectors,
5813                          pf->hw.func_caps.num_msix_vectors_vf,
5814                          pf->hw.func_caps.fd_filters_guaranteed,
5815                          pf->hw.func_caps.fd_filters_best_effort,
5816                          pf->hw.func_caps.num_tx_qp,
5817                          pf->hw.func_caps.num_vsis);
5818
5819 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
5820                        + pf->hw.func_caps.num_vfs)
5821         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
5822                 dev_info(&pf->pdev->dev,
5823                          "got num_vsis %d, setting num_vsis to %d\n",
5824                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
5825                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
5826         }
5827
5828         return 0;
5829 }
5830
5831 static int i40e_vsi_clear(struct i40e_vsi *vsi);
5832
5833 /**
5834  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
5835  * @pf: board private structure
5836  **/
5837 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
5838 {
5839         struct i40e_vsi *vsi;
5840         int i;
5841
5842         /* quick workaround for an NVM issue that leaves a critical register
5843          * uninitialized
5844          */
5845         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
5846                 static const u32 hkey[] = {
5847                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
5848                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
5849                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
5850                         0x95b3a76d};
5851
5852                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
5853                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
5854         }
5855
5856         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
5857                 return;
5858
5859         /* find existing VSI and see if it needs configuring */
5860         vsi = NULL;
5861         for (i = 0; i < pf->num_alloc_vsi; i++) {
5862                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
5863                         vsi = pf->vsi[i];
5864                         break;
5865                 }
5866         }
5867
5868         /* create a new VSI if none exists */
5869         if (!vsi) {
5870                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
5871                                      pf->vsi[pf->lan_vsi]->seid, 0);
5872                 if (!vsi) {
5873                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
5874                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
5875                         return;
5876                 }
5877         }
5878
5879         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
5880 }
5881
5882 /**
5883  * i40e_fdir_teardown - release the Flow Director resources
5884  * @pf: board private structure
5885  **/
5886 static void i40e_fdir_teardown(struct i40e_pf *pf)
5887 {
5888         int i;
5889
5890         i40e_fdir_filter_exit(pf);
5891         for (i = 0; i < pf->num_alloc_vsi; i++) {
5892                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
5893                         i40e_vsi_release(pf->vsi[i]);
5894                         break;
5895                 }
5896         }
5897 }
5898
5899 /**
5900  * i40e_prep_for_reset - prep for the core to reset
5901  * @pf: board private structure
5902  *
5903  * Close up the VFs and other things in prep for pf Reset.
5904   **/
5905 static void i40e_prep_for_reset(struct i40e_pf *pf)
5906 {
5907         struct i40e_hw *hw = &pf->hw;
5908         i40e_status ret = 0;
5909         u32 v;
5910
5911         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
5912         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
5913                 return;
5914
5915         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
5916
5917         /* quiesce the VSIs and their queues that are not already DOWN */
5918         i40e_pf_quiesce_all_vsi(pf);
5919
5920         for (v = 0; v < pf->num_alloc_vsi; v++) {
5921                 if (pf->vsi[v])
5922                         pf->vsi[v]->seid = 0;
5923         }
5924
5925         i40e_shutdown_adminq(&pf->hw);
5926
5927         /* call shutdown HMC */
5928         if (hw->hmc.hmc_obj) {
5929                 ret = i40e_shutdown_lan_hmc(hw);
5930                 if (ret)
5931                         dev_warn(&pf->pdev->dev,
5932                                  "shutdown_lan_hmc failed: %d\n", ret);
5933         }
5934 }
5935
5936 /**
5937  * i40e_send_version - update firmware with driver version
5938  * @pf: PF struct
5939  */
5940 static void i40e_send_version(struct i40e_pf *pf)
5941 {
5942         struct i40e_driver_version dv;
5943
5944         dv.major_version = DRV_VERSION_MAJOR;
5945         dv.minor_version = DRV_VERSION_MINOR;
5946         dv.build_version = DRV_VERSION_BUILD;
5947         dv.subbuild_version = 0;
5948         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
5949         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
5950 }
5951
5952 /**
5953  * i40e_reset_and_rebuild - reset and rebuild using a saved config
5954  * @pf: board private structure
5955  * @reinit: if the Main VSI needs to re-initialized.
5956  **/
5957 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
5958 {
5959         struct i40e_hw *hw = &pf->hw;
5960         u8 set_fc_aq_fail = 0;
5961         i40e_status ret;
5962         u32 v;
5963
5964         /* Now we wait for GRST to settle out.
5965          * We don't have to delete the VEBs or VSIs from the hw switch
5966          * because the reset will make them disappear.
5967          */
5968         ret = i40e_pf_reset(hw);
5969         if (ret) {
5970                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
5971                 set_bit(__I40E_RESET_FAILED, &pf->state);
5972                 goto clear_recovery;
5973         }
5974         pf->pfr_count++;
5975
5976         if (test_bit(__I40E_DOWN, &pf->state))
5977                 goto clear_recovery;
5978         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
5979
5980         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
5981         ret = i40e_init_adminq(&pf->hw);
5982         if (ret) {
5983                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, %d\n", ret);
5984                 goto clear_recovery;
5985         }
5986
5987         /* re-verify the eeprom if we just had an EMP reset */
5988         if (test_bit(__I40E_EMP_RESET_REQUESTED, &pf->state)) {
5989                 clear_bit(__I40E_EMP_RESET_REQUESTED, &pf->state);
5990                 i40e_verify_eeprom(pf);
5991         }
5992
5993         i40e_clear_pxe_mode(hw);
5994         ret = i40e_get_capabilities(pf);
5995         if (ret) {
5996                 dev_info(&pf->pdev->dev, "i40e_get_capabilities failed, %d\n",
5997                          ret);
5998                 goto end_core_reset;
5999         }
6000
6001         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6002                                 hw->func_caps.num_rx_qp,
6003                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6004         if (ret) {
6005                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6006                 goto end_core_reset;
6007         }
6008         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6009         if (ret) {
6010                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6011                 goto end_core_reset;
6012         }
6013
6014 #ifdef CONFIG_I40E_DCB
6015         ret = i40e_init_pf_dcb(pf);
6016         if (ret) {
6017                 dev_info(&pf->pdev->dev, "init_pf_dcb failed: %d\n", ret);
6018                 goto end_core_reset;
6019         }
6020 #endif /* CONFIG_I40E_DCB */
6021 #ifdef I40E_FCOE
6022         ret = i40e_init_pf_fcoe(pf);
6023         if (ret)
6024                 dev_info(&pf->pdev->dev, "init_pf_fcoe failed: %d\n", ret);
6025
6026 #endif
6027         /* do basic switch setup */
6028         ret = i40e_setup_pf_switch(pf, reinit);
6029         if (ret)
6030                 goto end_core_reset;
6031
6032         /* driver is only interested in link up/down and module qualification
6033          * reports from firmware
6034          */
6035         ret = i40e_aq_set_phy_int_mask(&pf->hw,
6036                                        I40E_AQ_EVENT_LINK_UPDOWN |
6037                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
6038         if (ret)
6039                 dev_info(&pf->pdev->dev, "set phy mask fail, aq_err %d\n", ret);
6040
6041         /* make sure our flow control settings are restored */
6042         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6043         if (ret)
6044                 dev_info(&pf->pdev->dev, "set fc fail, aq_err %d\n", ret);
6045
6046         /* Rebuild the VSIs and VEBs that existed before reset.
6047          * They are still in our local switch element arrays, so only
6048          * need to rebuild the switch model in the HW.
6049          *
6050          * If there were VEBs but the reconstitution failed, we'll try
6051          * try to recover minimal use by getting the basic PF VSI working.
6052          */
6053         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6054                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6055                 /* find the one VEB connected to the MAC, and find orphans */
6056                 for (v = 0; v < I40E_MAX_VEB; v++) {
6057                         if (!pf->veb[v])
6058                                 continue;
6059
6060                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6061                             pf->veb[v]->uplink_seid == 0) {
6062                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6063
6064                                 if (!ret)
6065                                         continue;
6066
6067                                 /* If Main VEB failed, we're in deep doodoo,
6068                                  * so give up rebuilding the switch and set up
6069                                  * for minimal rebuild of PF VSI.
6070                                  * If orphan failed, we'll report the error
6071                                  * but try to keep going.
6072                                  */
6073                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6074                                         dev_info(&pf->pdev->dev,
6075                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6076                                                  ret);
6077                                         pf->vsi[pf->lan_vsi]->uplink_seid
6078                                                                 = pf->mac_seid;
6079                                         break;
6080                                 } else if (pf->veb[v]->uplink_seid == 0) {
6081                                         dev_info(&pf->pdev->dev,
6082                                                  "rebuild of orphan VEB failed: %d\n",
6083                                                  ret);
6084                                 }
6085                         }
6086                 }
6087         }
6088
6089         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6090                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6091                 /* no VEB, so rebuild only the Main VSI */
6092                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6093                 if (ret) {
6094                         dev_info(&pf->pdev->dev,
6095                                  "rebuild of Main VSI failed: %d\n", ret);
6096                         goto end_core_reset;
6097                 }
6098         }
6099
6100         msleep(75);
6101         ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6102         if (ret) {
6103                 dev_info(&pf->pdev->dev, "link restart failed, aq_err=%d\n",
6104                          pf->hw.aq.asq_last_status);
6105         }
6106
6107         /* reinit the misc interrupt */
6108         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6109                 ret = i40e_setup_misc_vector(pf);
6110
6111         /* restart the VSIs that were rebuilt and running before the reset */
6112         i40e_pf_unquiesce_all_vsi(pf);
6113
6114         if (pf->num_alloc_vfs) {
6115                 for (v = 0; v < pf->num_alloc_vfs; v++)
6116                         i40e_reset_vf(&pf->vf[v], true);
6117         }
6118
6119         /* tell the firmware that we're starting */
6120         i40e_send_version(pf);
6121
6122 end_core_reset:
6123         clear_bit(__I40E_RESET_FAILED, &pf->state);
6124 clear_recovery:
6125         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
6126 }
6127
6128 /**
6129  * i40e_handle_reset_warning - prep for the pf to reset, reset and rebuild
6130  * @pf: board private structure
6131  *
6132  * Close up the VFs and other things in prep for a Core Reset,
6133  * then get ready to rebuild the world.
6134  **/
6135 static void i40e_handle_reset_warning(struct i40e_pf *pf)
6136 {
6137         i40e_prep_for_reset(pf);
6138         i40e_reset_and_rebuild(pf, false);
6139 }
6140
6141 /**
6142  * i40e_handle_mdd_event
6143  * @pf: pointer to the pf structure
6144  *
6145  * Called from the MDD irq handler to identify possibly malicious vfs
6146  **/
6147 static void i40e_handle_mdd_event(struct i40e_pf *pf)
6148 {
6149         struct i40e_hw *hw = &pf->hw;
6150         bool mdd_detected = false;
6151         bool pf_mdd_detected = false;
6152         struct i40e_vf *vf;
6153         u32 reg;
6154         int i;
6155
6156         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
6157                 return;
6158
6159         /* find what triggered the MDD event */
6160         reg = rd32(hw, I40E_GL_MDET_TX);
6161         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
6162                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
6163                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
6164                 u8 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
6165                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
6166                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
6167                                 I40E_GL_MDET_TX_EVENT_SHIFT;
6168                 u8 queue = (reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
6169                                 I40E_GL_MDET_TX_QUEUE_SHIFT;
6170                 if (netif_msg_tx_err(pf))
6171                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d pf number 0x%02x vf number 0x%02x\n",
6172                                  event, queue, pf_num, vf_num);
6173                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
6174                 mdd_detected = true;
6175         }
6176         reg = rd32(hw, I40E_GL_MDET_RX);
6177         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
6178                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
6179                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
6180                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
6181                                 I40E_GL_MDET_RX_EVENT_SHIFT;
6182                 u8 queue = (reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
6183                                 I40E_GL_MDET_RX_QUEUE_SHIFT;
6184                 if (netif_msg_rx_err(pf))
6185                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
6186                                  event, queue, func);
6187                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
6188                 mdd_detected = true;
6189         }
6190
6191         if (mdd_detected) {
6192                 reg = rd32(hw, I40E_PF_MDET_TX);
6193                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
6194                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
6195                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
6196                         pf_mdd_detected = true;
6197                 }
6198                 reg = rd32(hw, I40E_PF_MDET_RX);
6199                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
6200                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
6201                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
6202                         pf_mdd_detected = true;
6203                 }
6204                 /* Queue belongs to the PF, initiate a reset */
6205                 if (pf_mdd_detected) {
6206                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6207                         i40e_service_event_schedule(pf);
6208                 }
6209         }
6210
6211         /* see if one of the VFs needs its hand slapped */
6212         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
6213                 vf = &(pf->vf[i]);
6214                 reg = rd32(hw, I40E_VP_MDET_TX(i));
6215                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
6216                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
6217                         vf->num_mdd_events++;
6218                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
6219                                  i);
6220                 }
6221
6222                 reg = rd32(hw, I40E_VP_MDET_RX(i));
6223                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
6224                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
6225                         vf->num_mdd_events++;
6226                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
6227                                  i);
6228                 }
6229
6230                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
6231                         dev_info(&pf->pdev->dev,
6232                                  "Too many MDD events on VF %d, disabled\n", i);
6233                         dev_info(&pf->pdev->dev,
6234                                  "Use PF Control I/F to re-enable the VF\n");
6235                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
6236                 }
6237         }
6238
6239         /* re-enable mdd interrupt cause */
6240         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
6241         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
6242         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
6243         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
6244         i40e_flush(hw);
6245 }
6246
6247 #ifdef CONFIG_I40E_VXLAN
6248 /**
6249  * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
6250  * @pf: board private structure
6251  **/
6252 static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
6253 {
6254         struct i40e_hw *hw = &pf->hw;
6255         i40e_status ret;
6256         u8 filter_index;
6257         __be16 port;
6258         int i;
6259
6260         if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
6261                 return;
6262
6263         pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
6264
6265         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
6266                 if (pf->pending_vxlan_bitmap & (1 << i)) {
6267                         pf->pending_vxlan_bitmap &= ~(1 << i);
6268                         port = pf->vxlan_ports[i];
6269                         ret = port ?
6270                               i40e_aq_add_udp_tunnel(hw, ntohs(port),
6271                                                      I40E_AQC_TUNNEL_TYPE_VXLAN,
6272                                                      &filter_index, NULL)
6273                               : i40e_aq_del_udp_tunnel(hw, i, NULL);
6274
6275                         if (ret) {
6276                                 dev_info(&pf->pdev->dev, "Failed to execute AQ command for %s port %d with index %d\n",
6277                                          port ? "adding" : "deleting",
6278                                          ntohs(port), port ? i : i);
6279
6280                                 pf->vxlan_ports[i] = 0;
6281                         } else {
6282                                 dev_info(&pf->pdev->dev, "%s port %d with AQ command with index %d\n",
6283                                          port ? "Added" : "Deleted",
6284                                          ntohs(port), port ? i : filter_index);
6285                         }
6286                 }
6287         }
6288 }
6289
6290 #endif
6291 /**
6292  * i40e_service_task - Run the driver's async subtasks
6293  * @work: pointer to work_struct containing our data
6294  **/
6295 static void i40e_service_task(struct work_struct *work)
6296 {
6297         struct i40e_pf *pf = container_of(work,
6298                                           struct i40e_pf,
6299                                           service_task);
6300         unsigned long start_time = jiffies;
6301
6302         /* don't bother with service tasks if a reset is in progress */
6303         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
6304                 i40e_service_event_complete(pf);
6305                 return;
6306         }
6307
6308         i40e_reset_subtask(pf);
6309         i40e_handle_mdd_event(pf);
6310         i40e_vc_process_vflr_event(pf);
6311         i40e_watchdog_subtask(pf);
6312         i40e_fdir_reinit_subtask(pf);
6313         i40e_check_hang_subtask(pf);
6314         i40e_sync_filters_subtask(pf);
6315 #ifdef CONFIG_I40E_VXLAN
6316         i40e_sync_vxlan_filters_subtask(pf);
6317 #endif
6318         i40e_clean_adminq_subtask(pf);
6319
6320         i40e_link_event(pf);
6321
6322         i40e_service_event_complete(pf);
6323
6324         /* If the tasks have taken longer than one timer cycle or there
6325          * is more work to be done, reschedule the service task now
6326          * rather than wait for the timer to tick again.
6327          */
6328         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
6329             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
6330             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
6331             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
6332                 i40e_service_event_schedule(pf);
6333 }
6334
6335 /**
6336  * i40e_service_timer - timer callback
6337  * @data: pointer to PF struct
6338  **/
6339 static void i40e_service_timer(unsigned long data)
6340 {
6341         struct i40e_pf *pf = (struct i40e_pf *)data;
6342
6343         mod_timer(&pf->service_timer,
6344                   round_jiffies(jiffies + pf->service_timer_period));
6345         i40e_service_event_schedule(pf);
6346 }
6347
6348 /**
6349  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
6350  * @vsi: the VSI being configured
6351  **/
6352 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
6353 {
6354         struct i40e_pf *pf = vsi->back;
6355
6356         switch (vsi->type) {
6357         case I40E_VSI_MAIN:
6358                 vsi->alloc_queue_pairs = pf->num_lan_qps;
6359                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6360                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6361                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6362                         vsi->num_q_vectors = pf->num_lan_msix;
6363                 else
6364                         vsi->num_q_vectors = 1;
6365
6366                 break;
6367
6368         case I40E_VSI_FDIR:
6369                 vsi->alloc_queue_pairs = 1;
6370                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
6371                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6372                 vsi->num_q_vectors = 1;
6373                 break;
6374
6375         case I40E_VSI_VMDQ2:
6376                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
6377                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6378                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6379                 vsi->num_q_vectors = pf->num_vmdq_msix;
6380                 break;
6381
6382         case I40E_VSI_SRIOV:
6383                 vsi->alloc_queue_pairs = pf->num_vf_qps;
6384                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6385                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6386                 break;
6387
6388 #ifdef I40E_FCOE
6389         case I40E_VSI_FCOE:
6390                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
6391                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6392                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6393                 vsi->num_q_vectors = pf->num_fcoe_msix;
6394                 break;
6395
6396 #endif /* I40E_FCOE */
6397         default:
6398                 WARN_ON(1);
6399                 return -ENODATA;
6400         }
6401
6402         return 0;
6403 }
6404
6405 /**
6406  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
6407  * @type: VSI pointer
6408  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
6409  *
6410  * On error: returns error code (negative)
6411  * On success: returns 0
6412  **/
6413 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
6414 {
6415         int size;
6416         int ret = 0;
6417
6418         /* allocate memory for both Tx and Rx ring pointers */
6419         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
6420         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
6421         if (!vsi->tx_rings)
6422                 return -ENOMEM;
6423         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
6424
6425         if (alloc_qvectors) {
6426                 /* allocate memory for q_vector pointers */
6427                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
6428                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
6429                 if (!vsi->q_vectors) {
6430                         ret = -ENOMEM;
6431                         goto err_vectors;
6432                 }
6433         }
6434         return ret;
6435
6436 err_vectors:
6437         kfree(vsi->tx_rings);
6438         return ret;
6439 }
6440
6441 /**
6442  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
6443  * @pf: board private structure
6444  * @type: type of VSI
6445  *
6446  * On error: returns error code (negative)
6447  * On success: returns vsi index in PF (positive)
6448  **/
6449 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
6450 {
6451         int ret = -ENODEV;
6452         struct i40e_vsi *vsi;
6453         int vsi_idx;
6454         int i;
6455
6456         /* Need to protect the allocation of the VSIs at the PF level */
6457         mutex_lock(&pf->switch_mutex);
6458
6459         /* VSI list may be fragmented if VSI creation/destruction has
6460          * been happening.  We can afford to do a quick scan to look
6461          * for any free VSIs in the list.
6462          *
6463          * find next empty vsi slot, looping back around if necessary
6464          */
6465         i = pf->next_vsi;
6466         while (i < pf->num_alloc_vsi && pf->vsi[i])
6467                 i++;
6468         if (i >= pf->num_alloc_vsi) {
6469                 i = 0;
6470                 while (i < pf->next_vsi && pf->vsi[i])
6471                         i++;
6472         }
6473
6474         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
6475                 vsi_idx = i;             /* Found one! */
6476         } else {
6477                 ret = -ENODEV;
6478                 goto unlock_pf;  /* out of VSI slots! */
6479         }
6480         pf->next_vsi = ++i;
6481
6482         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
6483         if (!vsi) {
6484                 ret = -ENOMEM;
6485                 goto unlock_pf;
6486         }
6487         vsi->type = type;
6488         vsi->back = pf;
6489         set_bit(__I40E_DOWN, &vsi->state);
6490         vsi->flags = 0;
6491         vsi->idx = vsi_idx;
6492         vsi->rx_itr_setting = pf->rx_itr_default;
6493         vsi->tx_itr_setting = pf->tx_itr_default;
6494         vsi->netdev_registered = false;
6495         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
6496         INIT_LIST_HEAD(&vsi->mac_filter_list);
6497         vsi->irqs_ready = false;
6498
6499         ret = i40e_set_num_rings_in_vsi(vsi);
6500         if (ret)
6501                 goto err_rings;
6502
6503         ret = i40e_vsi_alloc_arrays(vsi, true);
6504         if (ret)
6505                 goto err_rings;
6506
6507         /* Setup default MSIX irq handler for VSI */
6508         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
6509
6510         pf->vsi[vsi_idx] = vsi;
6511         ret = vsi_idx;
6512         goto unlock_pf;
6513
6514 err_rings:
6515         pf->next_vsi = i - 1;
6516         kfree(vsi);
6517 unlock_pf:
6518         mutex_unlock(&pf->switch_mutex);
6519         return ret;
6520 }
6521
6522 /**
6523  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
6524  * @type: VSI pointer
6525  * @free_qvectors: a bool to specify if q_vectors need to be freed.
6526  *
6527  * On error: returns error code (negative)
6528  * On success: returns 0
6529  **/
6530 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
6531 {
6532         /* free the ring and vector containers */
6533         if (free_qvectors) {
6534                 kfree(vsi->q_vectors);
6535                 vsi->q_vectors = NULL;
6536         }
6537         kfree(vsi->tx_rings);
6538         vsi->tx_rings = NULL;
6539         vsi->rx_rings = NULL;
6540 }
6541
6542 /**
6543  * i40e_vsi_clear - Deallocate the VSI provided
6544  * @vsi: the VSI being un-configured
6545  **/
6546 static int i40e_vsi_clear(struct i40e_vsi *vsi)
6547 {
6548         struct i40e_pf *pf;
6549
6550         if (!vsi)
6551                 return 0;
6552
6553         if (!vsi->back)
6554                 goto free_vsi;
6555         pf = vsi->back;
6556
6557         mutex_lock(&pf->switch_mutex);
6558         if (!pf->vsi[vsi->idx]) {
6559                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
6560                         vsi->idx, vsi->idx, vsi, vsi->type);
6561                 goto unlock_vsi;
6562         }
6563
6564         if (pf->vsi[vsi->idx] != vsi) {
6565                 dev_err(&pf->pdev->dev,
6566                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
6567                         pf->vsi[vsi->idx]->idx,
6568                         pf->vsi[vsi->idx],
6569                         pf->vsi[vsi->idx]->type,
6570                         vsi->idx, vsi, vsi->type);
6571                 goto unlock_vsi;
6572         }
6573
6574         /* updates the pf for this cleared vsi */
6575         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
6576         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
6577
6578         i40e_vsi_free_arrays(vsi, true);
6579
6580         pf->vsi[vsi->idx] = NULL;
6581         if (vsi->idx < pf->next_vsi)
6582                 pf->next_vsi = vsi->idx;
6583
6584 unlock_vsi:
6585         mutex_unlock(&pf->switch_mutex);
6586 free_vsi:
6587         kfree(vsi);
6588
6589         return 0;
6590 }
6591
6592 /**
6593  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
6594  * @vsi: the VSI being cleaned
6595  **/
6596 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
6597 {
6598         int i;
6599
6600         if (vsi->tx_rings && vsi->tx_rings[0]) {
6601                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
6602                         kfree_rcu(vsi->tx_rings[i], rcu);
6603                         vsi->tx_rings[i] = NULL;
6604                         vsi->rx_rings[i] = NULL;
6605                 }
6606         }
6607 }
6608
6609 /**
6610  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
6611  * @vsi: the VSI being configured
6612  **/
6613 static int i40e_alloc_rings(struct i40e_vsi *vsi)
6614 {
6615         struct i40e_ring *tx_ring, *rx_ring;
6616         struct i40e_pf *pf = vsi->back;
6617         int i;
6618
6619         /* Set basic values in the rings to be used later during open() */
6620         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
6621                 /* allocate space for both Tx and Rx in one shot */
6622                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
6623                 if (!tx_ring)
6624                         goto err_out;
6625
6626                 tx_ring->queue_index = i;
6627                 tx_ring->reg_idx = vsi->base_queue + i;
6628                 tx_ring->ring_active = false;
6629                 tx_ring->vsi = vsi;
6630                 tx_ring->netdev = vsi->netdev;
6631                 tx_ring->dev = &pf->pdev->dev;
6632                 tx_ring->count = vsi->num_desc;
6633                 tx_ring->size = 0;
6634                 tx_ring->dcb_tc = 0;
6635                 vsi->tx_rings[i] = tx_ring;
6636
6637                 rx_ring = &tx_ring[1];
6638                 rx_ring->queue_index = i;
6639                 rx_ring->reg_idx = vsi->base_queue + i;
6640                 rx_ring->ring_active = false;
6641                 rx_ring->vsi = vsi;
6642                 rx_ring->netdev = vsi->netdev;
6643                 rx_ring->dev = &pf->pdev->dev;
6644                 rx_ring->count = vsi->num_desc;
6645                 rx_ring->size = 0;
6646                 rx_ring->dcb_tc = 0;
6647                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
6648                         set_ring_16byte_desc_enabled(rx_ring);
6649                 else
6650                         clear_ring_16byte_desc_enabled(rx_ring);
6651                 vsi->rx_rings[i] = rx_ring;
6652         }
6653
6654         return 0;
6655
6656 err_out:
6657         i40e_vsi_clear_rings(vsi);
6658         return -ENOMEM;
6659 }
6660
6661 /**
6662  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
6663  * @pf: board private structure
6664  * @vectors: the number of MSI-X vectors to request
6665  *
6666  * Returns the number of vectors reserved, or error
6667  **/
6668 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
6669 {
6670         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
6671                                         I40E_MIN_MSIX, vectors);
6672         if (vectors < 0) {
6673                 dev_info(&pf->pdev->dev,
6674                          "MSI-X vector reservation failed: %d\n", vectors);
6675                 vectors = 0;
6676         }
6677
6678         return vectors;
6679 }
6680
6681 /**
6682  * i40e_init_msix - Setup the MSIX capability
6683  * @pf: board private structure
6684  *
6685  * Work with the OS to set up the MSIX vectors needed.
6686  *
6687  * Returns 0 on success, negative on failure
6688  **/
6689 static int i40e_init_msix(struct i40e_pf *pf)
6690 {
6691         i40e_status err = 0;
6692         struct i40e_hw *hw = &pf->hw;
6693         int v_budget, i;
6694         int vec;
6695
6696         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
6697                 return -ENODEV;
6698
6699         /* The number of vectors we'll request will be comprised of:
6700          *   - Add 1 for "other" cause for Admin Queue events, etc.
6701          *   - The number of LAN queue pairs
6702          *      - Queues being used for RSS.
6703          *              We don't need as many as max_rss_size vectors.
6704          *              use rss_size instead in the calculation since that
6705          *              is governed by number of cpus in the system.
6706          *      - assumes symmetric Tx/Rx pairing
6707          *   - The number of VMDq pairs
6708 #ifdef I40E_FCOE
6709          *   - The number of FCOE qps.
6710 #endif
6711          * Once we count this up, try the request.
6712          *
6713          * If we can't get what we want, we'll simplify to nearly nothing
6714          * and try again.  If that still fails, we punt.
6715          */
6716         pf->num_lan_msix = pf->num_lan_qps - (pf->rss_size_max - pf->rss_size);
6717         pf->num_vmdq_msix = pf->num_vmdq_qps;
6718         v_budget = 1 + pf->num_lan_msix;
6719         v_budget += (pf->num_vmdq_vsis * pf->num_vmdq_msix);
6720         if (pf->flags & I40E_FLAG_FD_SB_ENABLED)
6721                 v_budget++;
6722
6723 #ifdef I40E_FCOE
6724         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
6725                 pf->num_fcoe_msix = pf->num_fcoe_qps;
6726                 v_budget += pf->num_fcoe_msix;
6727         }
6728
6729 #endif
6730         /* Scale down if necessary, and the rings will share vectors */
6731         v_budget = min_t(int, v_budget, hw->func_caps.num_msix_vectors);
6732
6733         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
6734                                    GFP_KERNEL);
6735         if (!pf->msix_entries)
6736                 return -ENOMEM;
6737
6738         for (i = 0; i < v_budget; i++)
6739                 pf->msix_entries[i].entry = i;
6740         vec = i40e_reserve_msix_vectors(pf, v_budget);
6741
6742         if (vec != v_budget) {
6743                 /* If we have limited resources, we will start with no vectors
6744                  * for the special features and then allocate vectors to some
6745                  * of these features based on the policy and at the end disable
6746                  * the features that did not get any vectors.
6747                  */
6748 #ifdef I40E_FCOE
6749                 pf->num_fcoe_qps = 0;
6750                 pf->num_fcoe_msix = 0;
6751 #endif
6752                 pf->num_vmdq_msix = 0;
6753         }
6754
6755         if (vec < I40E_MIN_MSIX) {
6756                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
6757                 kfree(pf->msix_entries);
6758                 pf->msix_entries = NULL;
6759                 return -ENODEV;
6760
6761         } else if (vec == I40E_MIN_MSIX) {
6762                 /* Adjust for minimal MSIX use */
6763                 pf->num_vmdq_vsis = 0;
6764                 pf->num_vmdq_qps = 0;
6765                 pf->num_lan_qps = 1;
6766                 pf->num_lan_msix = 1;
6767
6768         } else if (vec != v_budget) {
6769                 /* reserve the misc vector */
6770                 vec--;
6771
6772                 /* Scale vector usage down */
6773                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
6774                 pf->num_vmdq_vsis = 1;
6775
6776                 /* partition out the remaining vectors */
6777                 switch (vec) {
6778                 case 2:
6779                         pf->num_lan_msix = 1;
6780                         break;
6781                 case 3:
6782 #ifdef I40E_FCOE
6783                         /* give one vector to FCoE */
6784                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
6785                                 pf->num_lan_msix = 1;
6786                                 pf->num_fcoe_msix = 1;
6787                         }
6788 #else
6789                         pf->num_lan_msix = 2;
6790 #endif
6791                         break;
6792                 default:
6793 #ifdef I40E_FCOE
6794                         /* give one vector to FCoE */
6795                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
6796                                 pf->num_fcoe_msix = 1;
6797                                 vec--;
6798                         }
6799 #endif
6800                         pf->num_lan_msix = min_t(int, (vec / 2),
6801                                                  pf->num_lan_qps);
6802                         pf->num_vmdq_vsis = min_t(int, (vec - pf->num_lan_msix),
6803                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
6804                         break;
6805                 }
6806         }
6807
6808         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
6809             (pf->num_vmdq_msix == 0)) {
6810                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
6811                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
6812         }
6813 #ifdef I40E_FCOE
6814
6815         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
6816                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
6817                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
6818         }
6819 #endif
6820         return err;
6821 }
6822
6823 /**
6824  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
6825  * @vsi: the VSI being configured
6826  * @v_idx: index of the vector in the vsi struct
6827  *
6828  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
6829  **/
6830 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
6831 {
6832         struct i40e_q_vector *q_vector;
6833
6834         /* allocate q_vector */
6835         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
6836         if (!q_vector)
6837                 return -ENOMEM;
6838
6839         q_vector->vsi = vsi;
6840         q_vector->v_idx = v_idx;
6841         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
6842         if (vsi->netdev)
6843                 netif_napi_add(vsi->netdev, &q_vector->napi,
6844                                i40e_napi_poll, NAPI_POLL_WEIGHT);
6845
6846         q_vector->rx.latency_range = I40E_LOW_LATENCY;
6847         q_vector->tx.latency_range = I40E_LOW_LATENCY;
6848
6849         /* tie q_vector and vsi together */
6850         vsi->q_vectors[v_idx] = q_vector;
6851
6852         return 0;
6853 }
6854
6855 /**
6856  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
6857  * @vsi: the VSI being configured
6858  *
6859  * We allocate one q_vector per queue interrupt.  If allocation fails we
6860  * return -ENOMEM.
6861  **/
6862 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
6863 {
6864         struct i40e_pf *pf = vsi->back;
6865         int v_idx, num_q_vectors;
6866         int err;
6867
6868         /* if not MSIX, give the one vector only to the LAN VSI */
6869         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6870                 num_q_vectors = vsi->num_q_vectors;
6871         else if (vsi == pf->vsi[pf->lan_vsi])
6872                 num_q_vectors = 1;
6873         else
6874                 return -EINVAL;
6875
6876         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
6877                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
6878                 if (err)
6879                         goto err_out;
6880         }
6881
6882         return 0;
6883
6884 err_out:
6885         while (v_idx--)
6886                 i40e_free_q_vector(vsi, v_idx);
6887
6888         return err;
6889 }
6890
6891 /**
6892  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
6893  * @pf: board private structure to initialize
6894  **/
6895 static void i40e_init_interrupt_scheme(struct i40e_pf *pf)
6896 {
6897         int err = 0;
6898
6899         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
6900                 err = i40e_init_msix(pf);
6901                 if (err) {
6902                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
6903 #ifdef I40E_FCOE
6904                                        I40E_FLAG_FCOE_ENABLED   |
6905 #endif
6906                                        I40E_FLAG_RSS_ENABLED    |
6907                                        I40E_FLAG_DCB_CAPABLE    |
6908                                        I40E_FLAG_SRIOV_ENABLED  |
6909                                        I40E_FLAG_FD_SB_ENABLED  |
6910                                        I40E_FLAG_FD_ATR_ENABLED |
6911                                        I40E_FLAG_VMDQ_ENABLED);
6912
6913                         /* rework the queue expectations without MSIX */
6914                         i40e_determine_queue_usage(pf);
6915                 }
6916         }
6917
6918         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
6919             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
6920                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
6921                 err = pci_enable_msi(pf->pdev);
6922                 if (err) {
6923                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n", err);
6924                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
6925                 }
6926         }
6927
6928         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
6929                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
6930
6931         /* track first vector for misc interrupts */
6932         err = i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT-1);
6933 }
6934
6935 /**
6936  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
6937  * @pf: board private structure
6938  *
6939  * This sets up the handler for MSIX 0, which is used to manage the
6940  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
6941  * when in MSI or Legacy interrupt mode.
6942  **/
6943 static int i40e_setup_misc_vector(struct i40e_pf *pf)
6944 {
6945         struct i40e_hw *hw = &pf->hw;
6946         int err = 0;
6947
6948         /* Only request the irq if this is the first time through, and
6949          * not when we're rebuilding after a Reset
6950          */
6951         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
6952                 err = request_irq(pf->msix_entries[0].vector,
6953                                   i40e_intr, 0, pf->misc_int_name, pf);
6954                 if (err) {
6955                         dev_info(&pf->pdev->dev,
6956                                  "request_irq for %s failed: %d\n",
6957                                  pf->misc_int_name, err);
6958                         return -EFAULT;
6959                 }
6960         }
6961
6962         i40e_enable_misc_int_causes(hw);
6963
6964         /* associate no queues to the misc vector */
6965         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
6966         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
6967
6968         i40e_flush(hw);
6969
6970         i40e_irq_dynamic_enable_icr0(pf);
6971
6972         return err;
6973 }
6974
6975 /**
6976  * i40e_config_rss - Prepare for RSS if used
6977  * @pf: board private structure
6978  **/
6979 static int i40e_config_rss(struct i40e_pf *pf)
6980 {
6981         /* Set of random keys generated using kernel random number generator */
6982         static const u32 seed[I40E_PFQF_HKEY_MAX_INDEX + 1] = {0x41b01687,
6983                                 0x183cfd8c, 0xce880440, 0x580cbc3c, 0x35897377,
6984                                 0x328b25e1, 0x4fa98922, 0xb7d90c14, 0xd5bad70d,
6985                                 0xcd15a2c1, 0xe8580225, 0x4a1e9d11, 0xfe5731be};
6986         struct i40e_hw *hw = &pf->hw;
6987         u32 lut = 0;
6988         int i, j;
6989         u64 hena;
6990         u32 reg_val;
6991
6992         /* Fill out hash function seed */
6993         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
6994                 wr32(hw, I40E_PFQF_HKEY(i), seed[i]);
6995
6996         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
6997         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
6998                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
6999         hena |= I40E_DEFAULT_RSS_HENA;
7000         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
7001         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
7002
7003         /* Check capability and Set table size and register per hw expectation*/
7004         reg_val = rd32(hw, I40E_PFQF_CTL_0);
7005         if (hw->func_caps.rss_table_size == 512) {
7006                 reg_val |= I40E_PFQF_CTL_0_HASHLUTSIZE_512;
7007                 pf->rss_table_size = 512;
7008         } else {
7009                 pf->rss_table_size = 128;
7010                 reg_val &= ~I40E_PFQF_CTL_0_HASHLUTSIZE_512;
7011         }
7012         wr32(hw, I40E_PFQF_CTL_0, reg_val);
7013
7014         /* Populate the LUT with max no. of queues in round robin fashion */
7015         for (i = 0, j = 0; i < pf->rss_table_size; i++, j++) {
7016
7017                 /* The assumption is that lan qp count will be the highest
7018                  * qp count for any PF VSI that needs RSS.
7019                  * If multiple VSIs need RSS support, all the qp counts
7020                  * for those VSIs should be a power of 2 for RSS to work.
7021                  * If LAN VSI is the only consumer for RSS then this requirement
7022                  * is not necessary.
7023                  */
7024                 if (j == pf->rss_size)
7025                         j = 0;
7026                 /* lut = 4-byte sliding window of 4 lut entries */
7027                 lut = (lut << 8) | (j &
7028                          ((0x1 << pf->hw.func_caps.rss_table_entry_width) - 1));
7029                 /* On i = 3, we have 4 entries in lut; write to the register */
7030                 if ((i & 3) == 3)
7031                         wr32(hw, I40E_PFQF_HLUT(i >> 2), lut);
7032         }
7033         i40e_flush(hw);
7034
7035         return 0;
7036 }
7037
7038 /**
7039  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
7040  * @pf: board private structure
7041  * @queue_count: the requested queue count for rss.
7042  *
7043  * returns 0 if rss is not enabled, if enabled returns the final rss queue
7044  * count which may be different from the requested queue count.
7045  **/
7046 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
7047 {
7048         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
7049                 return 0;
7050
7051         queue_count = min_t(int, queue_count, pf->rss_size_max);
7052
7053         if (queue_count != pf->rss_size) {
7054                 i40e_prep_for_reset(pf);
7055
7056                 pf->rss_size = queue_count;
7057
7058                 i40e_reset_and_rebuild(pf, true);
7059                 i40e_config_rss(pf);
7060         }
7061         dev_info(&pf->pdev->dev, "RSS count:  %d\n", pf->rss_size);
7062         return pf->rss_size;
7063 }
7064
7065 /**
7066  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
7067  * @pf: board private structure to initialize
7068  *
7069  * i40e_sw_init initializes the Adapter private data structure.
7070  * Fields are initialized based on PCI device information and
7071  * OS network device settings (MTU size).
7072  **/
7073 static int i40e_sw_init(struct i40e_pf *pf)
7074 {
7075         int err = 0;
7076         int size;
7077
7078         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
7079                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
7080         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
7081         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
7082                 if (I40E_DEBUG_USER & debug)
7083                         pf->hw.debug_mask = debug;
7084                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
7085                                                 I40E_DEFAULT_MSG_ENABLE);
7086         }
7087
7088         /* Set default capability flags */
7089         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
7090                     I40E_FLAG_MSI_ENABLED     |
7091                     I40E_FLAG_MSIX_ENABLED    |
7092                     I40E_FLAG_RX_1BUF_ENABLED;
7093
7094         /* Set default ITR */
7095         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
7096         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
7097
7098         /* Depending on PF configurations, it is possible that the RSS
7099          * maximum might end up larger than the available queues
7100          */
7101         pf->rss_size_max = 0x1 << pf->hw.func_caps.rss_table_entry_width;
7102         pf->rss_size = 1;
7103         pf->rss_size_max = min_t(int, pf->rss_size_max,
7104                                  pf->hw.func_caps.num_tx_qp);
7105         if (pf->hw.func_caps.rss) {
7106                 pf->flags |= I40E_FLAG_RSS_ENABLED;
7107                 pf->rss_size = min_t(int, pf->rss_size_max, num_online_cpus());
7108         }
7109
7110         /* MFP mode enabled */
7111         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.mfp_mode_1) {
7112                 pf->flags |= I40E_FLAG_MFP_ENABLED;
7113                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
7114         }
7115
7116         /* FW/NVM is not yet fixed in this regard */
7117         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
7118             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
7119                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
7120                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
7121                 /* Setup a counter for fd_atr per pf */
7122                 pf->fd_atr_cnt_idx = I40E_FD_ATR_STAT_IDX(pf->hw.pf_id);
7123                 if (!(pf->flags & I40E_FLAG_MFP_ENABLED)) {
7124                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7125                         /* Setup a counter for fd_sb per pf */
7126                         pf->fd_sb_cnt_idx = I40E_FD_SB_STAT_IDX(pf->hw.pf_id);
7127                 } else {
7128                         dev_info(&pf->pdev->dev,
7129                                  "Flow Director Sideband mode Disabled in MFP mode\n");
7130                 }
7131                 pf->fdir_pf_filter_count =
7132                                  pf->hw.func_caps.fd_filters_guaranteed;
7133                 pf->hw.fdir_shared_filter_count =
7134                                  pf->hw.func_caps.fd_filters_best_effort;
7135         }
7136
7137         if (pf->hw.func_caps.vmdq) {
7138                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
7139                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
7140                 pf->num_vmdq_qps = I40E_DEFAULT_QUEUES_PER_VMDQ;
7141         }
7142
7143 #ifdef I40E_FCOE
7144         err = i40e_init_pf_fcoe(pf);
7145         if (err)
7146                 dev_info(&pf->pdev->dev, "init_pf_fcoe failed: %d\n", err);
7147
7148 #endif /* I40E_FCOE */
7149 #ifdef CONFIG_PCI_IOV
7150         if (pf->hw.func_caps.num_vfs) {
7151                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
7152                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
7153                 pf->num_req_vfs = min_t(int,
7154                                         pf->hw.func_caps.num_vfs,
7155                                         I40E_MAX_VF_COUNT);
7156         }
7157 #endif /* CONFIG_PCI_IOV */
7158         pf->eeprom_version = 0xDEAD;
7159         pf->lan_veb = I40E_NO_VEB;
7160         pf->lan_vsi = I40E_NO_VSI;
7161
7162         /* set up queue assignment tracking */
7163         size = sizeof(struct i40e_lump_tracking)
7164                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
7165         pf->qp_pile = kzalloc(size, GFP_KERNEL);
7166         if (!pf->qp_pile) {
7167                 err = -ENOMEM;
7168                 goto sw_init_done;
7169         }
7170         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
7171         pf->qp_pile->search_hint = 0;
7172
7173         /* set up vector assignment tracking */
7174         size = sizeof(struct i40e_lump_tracking)
7175                 + (sizeof(u16) * pf->hw.func_caps.num_msix_vectors);
7176         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7177         if (!pf->irq_pile) {
7178                 kfree(pf->qp_pile);
7179                 err = -ENOMEM;
7180                 goto sw_init_done;
7181         }
7182         pf->irq_pile->num_entries = pf->hw.func_caps.num_msix_vectors;
7183         pf->irq_pile->search_hint = 0;
7184
7185         pf->tx_timeout_recovery_level = 1;
7186
7187         mutex_init(&pf->switch_mutex);
7188
7189 sw_init_done:
7190         return err;
7191 }
7192
7193 /**
7194  * i40e_set_ntuple - set the ntuple feature flag and take action
7195  * @pf: board private structure to initialize
7196  * @features: the feature set that the stack is suggesting
7197  *
7198  * returns a bool to indicate if reset needs to happen
7199  **/
7200 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
7201 {
7202         bool need_reset = false;
7203
7204         /* Check if Flow Director n-tuple support was enabled or disabled.  If
7205          * the state changed, we need to reset.
7206          */
7207         if (features & NETIF_F_NTUPLE) {
7208                 /* Enable filters and mark for reset */
7209                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
7210                         need_reset = true;
7211                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7212         } else {
7213                 /* turn off filters, mark for reset and clear SW filter list */
7214                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7215                         need_reset = true;
7216                         i40e_fdir_filter_exit(pf);
7217                 }
7218                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7219                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
7220                 /* reset fd counters */
7221                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
7222                 pf->fdir_pf_active_filters = 0;
7223                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
7224                 dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
7225                 /* if ATR was auto disabled it can be re-enabled. */
7226                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
7227                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
7228                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
7229         }
7230         return need_reset;
7231 }
7232
7233 /**
7234  * i40e_set_features - set the netdev feature flags
7235  * @netdev: ptr to the netdev being adjusted
7236  * @features: the feature set that the stack is suggesting
7237  **/
7238 static int i40e_set_features(struct net_device *netdev,
7239                              netdev_features_t features)
7240 {
7241         struct i40e_netdev_priv *np = netdev_priv(netdev);
7242         struct i40e_vsi *vsi = np->vsi;
7243         struct i40e_pf *pf = vsi->back;
7244         bool need_reset;
7245
7246         if (features & NETIF_F_HW_VLAN_CTAG_RX)
7247                 i40e_vlan_stripping_enable(vsi);
7248         else
7249                 i40e_vlan_stripping_disable(vsi);
7250
7251         need_reset = i40e_set_ntuple(pf, features);
7252
7253         if (need_reset)
7254                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
7255
7256         return 0;
7257 }
7258
7259 #ifdef CONFIG_I40E_VXLAN
7260 /**
7261  * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
7262  * @pf: board private structure
7263  * @port: The UDP port to look up
7264  *
7265  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
7266  **/
7267 static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
7268 {
7269         u8 i;
7270
7271         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
7272                 if (pf->vxlan_ports[i] == port)
7273                         return i;
7274         }
7275
7276         return i;
7277 }
7278
7279 /**
7280  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
7281  * @netdev: This physical port's netdev
7282  * @sa_family: Socket Family that VXLAN is notifying us about
7283  * @port: New UDP port number that VXLAN started listening to
7284  **/
7285 static void i40e_add_vxlan_port(struct net_device *netdev,
7286                                 sa_family_t sa_family, __be16 port)
7287 {
7288         struct i40e_netdev_priv *np = netdev_priv(netdev);
7289         struct i40e_vsi *vsi = np->vsi;
7290         struct i40e_pf *pf = vsi->back;
7291         u8 next_idx;
7292         u8 idx;
7293
7294         if (sa_family == AF_INET6)
7295                 return;
7296
7297         idx = i40e_get_vxlan_port_idx(pf, port);
7298
7299         /* Check if port already exists */
7300         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7301                 netdev_info(netdev, "Port %d already offloaded\n", ntohs(port));
7302                 return;
7303         }
7304
7305         /* Now check if there is space to add the new port */
7306         next_idx = i40e_get_vxlan_port_idx(pf, 0);
7307
7308         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7309                 netdev_info(netdev, "Maximum number of UDP ports reached, not adding port %d\n",
7310                             ntohs(port));
7311                 return;
7312         }
7313
7314         /* New port: add it and mark its index in the bitmap */
7315         pf->vxlan_ports[next_idx] = port;
7316         pf->pending_vxlan_bitmap |= (1 << next_idx);
7317
7318         pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
7319 }
7320
7321 /**
7322  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
7323  * @netdev: This physical port's netdev
7324  * @sa_family: Socket Family that VXLAN is notifying us about
7325  * @port: UDP port number that VXLAN stopped listening to
7326  **/
7327 static void i40e_del_vxlan_port(struct net_device *netdev,
7328                                 sa_family_t sa_family, __be16 port)
7329 {
7330         struct i40e_netdev_priv *np = netdev_priv(netdev);
7331         struct i40e_vsi *vsi = np->vsi;
7332         struct i40e_pf *pf = vsi->back;
7333         u8 idx;
7334
7335         if (sa_family == AF_INET6)
7336                 return;
7337
7338         idx = i40e_get_vxlan_port_idx(pf, port);
7339
7340         /* Check if port already exists */
7341         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7342                 /* if port exists, set it to 0 (mark for deletion)
7343                  * and make it pending
7344                  */
7345                 pf->vxlan_ports[idx] = 0;
7346
7347                 pf->pending_vxlan_bitmap |= (1 << idx);
7348
7349                 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
7350         } else {
7351                 netdev_warn(netdev, "Port %d was not found, not deleting\n",
7352                             ntohs(port));
7353         }
7354 }
7355
7356 #endif
7357 static int i40e_get_phys_port_id(struct net_device *netdev,
7358                                  struct netdev_phys_port_id *ppid)
7359 {
7360         struct i40e_netdev_priv *np = netdev_priv(netdev);
7361         struct i40e_pf *pf = np->vsi->back;
7362         struct i40e_hw *hw = &pf->hw;
7363
7364         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
7365                 return -EOPNOTSUPP;
7366
7367         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
7368         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
7369
7370         return 0;
7371 }
7372
7373 #ifdef HAVE_FDB_OPS
7374 #ifdef USE_CONST_DEV_UC_CHAR
7375 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
7376                             struct net_device *dev,
7377                             const unsigned char *addr,
7378                             u16 flags)
7379 #else
7380 static int i40e_ndo_fdb_add(struct ndmsg *ndm,
7381                             struct net_device *dev,
7382                             unsigned char *addr,
7383                             u16 flags)
7384 #endif
7385 {
7386         struct i40e_netdev_priv *np = netdev_priv(dev);
7387         struct i40e_pf *pf = np->vsi->back;
7388         int err = 0;
7389
7390         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
7391                 return -EOPNOTSUPP;
7392
7393         /* Hardware does not support aging addresses so if a
7394          * ndm_state is given only allow permanent addresses
7395          */
7396         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
7397                 netdev_info(dev, "FDB only supports static addresses\n");
7398                 return -EINVAL;
7399         }
7400
7401         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
7402                 err = dev_uc_add_excl(dev, addr);
7403         else if (is_multicast_ether_addr(addr))
7404                 err = dev_mc_add_excl(dev, addr);
7405         else
7406                 err = -EINVAL;
7407
7408         /* Only return duplicate errors if NLM_F_EXCL is set */
7409         if (err == -EEXIST && !(flags & NLM_F_EXCL))
7410                 err = 0;
7411
7412         return err;
7413 }
7414
7415 #ifndef USE_DEFAULT_FDB_DEL_DUMP
7416 #ifdef USE_CONST_DEV_UC_CHAR
7417 static int i40e_ndo_fdb_del(struct ndmsg *ndm,
7418                             struct net_device *dev,
7419                             const unsigned char *addr)
7420 #else
7421 static int i40e_ndo_fdb_del(struct ndmsg *ndm,
7422                             struct net_device *dev,
7423                             unsigned char *addr)
7424 #endif
7425 {
7426         struct i40e_netdev_priv *np = netdev_priv(dev);
7427         struct i40e_pf *pf = np->vsi->back;
7428         int err = -EOPNOTSUPP;
7429
7430         if (ndm->ndm_state & NUD_PERMANENT) {
7431                 netdev_info(dev, "FDB only supports static addresses\n");
7432                 return -EINVAL;
7433         }
7434
7435         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
7436                 if (is_unicast_ether_addr(addr))
7437                         err = dev_uc_del(dev, addr);
7438                 else if (is_multicast_ether_addr(addr))
7439                         err = dev_mc_del(dev, addr);
7440                 else
7441                         err = -EINVAL;
7442         }
7443
7444         return err;
7445 }
7446
7447 static int i40e_ndo_fdb_dump(struct sk_buff *skb,
7448                              struct netlink_callback *cb,
7449                              struct net_device *dev,
7450                              struct net_device *filter_dev,
7451                              int idx)
7452 {
7453         struct i40e_netdev_priv *np = netdev_priv(dev);
7454         struct i40e_pf *pf = np->vsi->back;
7455
7456         if (pf->flags & I40E_FLAG_SRIOV_ENABLED)
7457                 idx = ndo_dflt_fdb_dump(skb, cb, dev, filter_dev, idx);
7458
7459         return idx;
7460 }
7461
7462 #endif /* USE_DEFAULT_FDB_DEL_DUMP */
7463 #endif /* HAVE_FDB_OPS */
7464 static const struct net_device_ops i40e_netdev_ops = {
7465         .ndo_open               = i40e_open,
7466         .ndo_stop               = i40e_close,
7467         .ndo_start_xmit         = i40e_lan_xmit_frame,
7468         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
7469         .ndo_set_rx_mode        = i40e_set_rx_mode,
7470         .ndo_validate_addr      = eth_validate_addr,
7471         .ndo_set_mac_address    = i40e_set_mac,
7472         .ndo_change_mtu         = i40e_change_mtu,
7473         .ndo_do_ioctl           = i40e_ioctl,
7474         .ndo_tx_timeout         = i40e_tx_timeout,
7475         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
7476         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
7477 #ifdef CONFIG_NET_POLL_CONTROLLER
7478         .ndo_poll_controller    = i40e_netpoll,
7479 #endif
7480         .ndo_setup_tc           = i40e_setup_tc,
7481 #ifdef I40E_FCOE
7482         .ndo_fcoe_enable        = i40e_fcoe_enable,
7483         .ndo_fcoe_disable       = i40e_fcoe_disable,
7484 #endif
7485         .ndo_set_features       = i40e_set_features,
7486         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
7487         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
7488         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
7489         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
7490         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
7491         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
7492 #ifdef CONFIG_I40E_VXLAN
7493         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
7494         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
7495 #endif
7496         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
7497 #ifdef HAVE_FDB_OPS
7498         .ndo_fdb_add            = i40e_ndo_fdb_add,
7499 #ifndef USE_DEFAULT_FDB_DEL_DUMP
7500         .ndo_fdb_del            = i40e_ndo_fdb_del,
7501         .ndo_fdb_dump           = i40e_ndo_fdb_dump,
7502 #endif
7503 #endif
7504 };
7505
7506 /**
7507  * i40e_config_netdev - Setup the netdev flags
7508  * @vsi: the VSI being configured
7509  *
7510  * Returns 0 on success, negative value on failure
7511  **/
7512 static int i40e_config_netdev(struct i40e_vsi *vsi)
7513 {
7514         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
7515         struct i40e_pf *pf = vsi->back;
7516         struct i40e_hw *hw = &pf->hw;
7517         struct i40e_netdev_priv *np;
7518         struct net_device *netdev;
7519         u8 mac_addr[ETH_ALEN];
7520         int etherdev_size;
7521
7522         etherdev_size = sizeof(struct i40e_netdev_priv);
7523         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
7524         if (!netdev)
7525                 return -ENOMEM;
7526
7527         vsi->netdev = netdev;
7528         np = netdev_priv(netdev);
7529         np->vsi = vsi;
7530
7531         netdev->hw_enc_features |= NETIF_F_IP_CSUM       |
7532                                   NETIF_F_GSO_UDP_TUNNEL |
7533                                   NETIF_F_TSO;
7534
7535         netdev->features = NETIF_F_SG                  |
7536                            NETIF_F_IP_CSUM             |
7537                            NETIF_F_SCTP_CSUM           |
7538                            NETIF_F_HIGHDMA             |
7539                            NETIF_F_GSO_UDP_TUNNEL      |
7540                            NETIF_F_HW_VLAN_CTAG_TX     |
7541                            NETIF_F_HW_VLAN_CTAG_RX     |
7542                            NETIF_F_HW_VLAN_CTAG_FILTER |
7543                            NETIF_F_IPV6_CSUM           |
7544                            NETIF_F_TSO                 |
7545                            NETIF_F_TSO_ECN             |
7546                            NETIF_F_TSO6                |
7547                            NETIF_F_RXCSUM              |
7548                            NETIF_F_RXHASH              |
7549                            0;
7550
7551         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
7552                 netdev->features |= NETIF_F_NTUPLE;
7553
7554         /* copy netdev features into list of user selectable features */
7555         netdev->hw_features |= netdev->features;
7556
7557         if (vsi->type == I40E_VSI_MAIN) {
7558                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
7559                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
7560                 /* The following steps are necessary to prevent reception
7561                  * of tagged packets - some older NVM configurations load a
7562                  * default a MAC-VLAN filter that accepts any tagged packet
7563                  * which must be replaced by a normal filter.
7564                  */
7565                 if (!i40e_rm_default_mac_filter(vsi, mac_addr))
7566                         i40e_add_filter(vsi, mac_addr,
7567                                         I40E_VLAN_ANY, false, true);
7568         } else {
7569                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
7570                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
7571                          pf->vsi[pf->lan_vsi]->netdev->name);
7572                 random_ether_addr(mac_addr);
7573                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
7574         }
7575         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
7576
7577         ether_addr_copy(netdev->dev_addr, mac_addr);
7578         ether_addr_copy(netdev->perm_addr, mac_addr);
7579         /* vlan gets same features (except vlan offload)
7580          * after any tweaks for specific VSI types
7581          */
7582         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
7583                                                      NETIF_F_HW_VLAN_CTAG_RX |
7584                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
7585         netdev->priv_flags |= IFF_UNICAST_FLT;
7586         netdev->priv_flags |= IFF_SUPP_NOFCS;
7587         /* Setup netdev TC information */
7588         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
7589
7590         netdev->netdev_ops = &i40e_netdev_ops;
7591         netdev->watchdog_timeo = 5 * HZ;
7592         i40e_set_ethtool_ops(netdev);
7593 #ifdef I40E_FCOE
7594         i40e_fcoe_config_netdev(netdev, vsi);
7595 #endif
7596
7597         return 0;
7598 }
7599
7600 /**
7601  * i40e_vsi_delete - Delete a VSI from the switch
7602  * @vsi: the VSI being removed
7603  *
7604  * Returns 0 on success, negative value on failure
7605  **/
7606 static void i40e_vsi_delete(struct i40e_vsi *vsi)
7607 {
7608         /* remove default VSI is not allowed */
7609         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
7610                 return;
7611
7612         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
7613 }
7614
7615 /**
7616  * i40e_add_vsi - Add a VSI to the switch
7617  * @vsi: the VSI being configured
7618  *
7619  * This initializes a VSI context depending on the VSI type to be added and
7620  * passes it down to the add_vsi aq command.
7621  **/
7622 static int i40e_add_vsi(struct i40e_vsi *vsi)
7623 {
7624         int ret = -ENODEV;
7625         struct i40e_mac_filter *f, *ftmp;
7626         struct i40e_pf *pf = vsi->back;
7627         struct i40e_hw *hw = &pf->hw;
7628         struct i40e_vsi_context ctxt;
7629         u8 enabled_tc = 0x1; /* TC0 enabled */
7630         int f_count = 0;
7631
7632         memset(&ctxt, 0, sizeof(ctxt));
7633         switch (vsi->type) {
7634         case I40E_VSI_MAIN:
7635                 /* The PF's main VSI is already setup as part of the
7636                  * device initialization, so we'll not bother with
7637                  * the add_vsi call, but we will retrieve the current
7638                  * VSI context.
7639                  */
7640                 ctxt.seid = pf->main_vsi_seid;
7641                 ctxt.pf_num = pf->hw.pf_id;
7642                 ctxt.vf_num = 0;
7643                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
7644                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
7645                 if (ret) {
7646                         dev_info(&pf->pdev->dev,
7647                                  "couldn't get pf vsi config, err %d, aq_err %d\n",
7648                                  ret, pf->hw.aq.asq_last_status);
7649                         return -ENOENT;
7650                 }
7651                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
7652                 vsi->info.valid_sections = 0;
7653
7654                 vsi->seid = ctxt.seid;
7655                 vsi->id = ctxt.vsi_number;
7656
7657                 enabled_tc = i40e_pf_get_tc_map(pf);
7658
7659                 /* MFP mode setup queue map and update VSI */
7660                 if (pf->flags & I40E_FLAG_MFP_ENABLED) {
7661                         memset(&ctxt, 0, sizeof(ctxt));
7662                         ctxt.seid = pf->main_vsi_seid;
7663                         ctxt.pf_num = pf->hw.pf_id;
7664                         ctxt.vf_num = 0;
7665                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
7666                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
7667                         if (ret) {
7668                                 dev_info(&pf->pdev->dev,
7669                                          "update vsi failed, aq_err=%d\n",
7670                                          pf->hw.aq.asq_last_status);
7671                                 ret = -ENOENT;
7672                                 goto err;
7673                         }
7674                         /* update the local VSI info queue map */
7675                         i40e_vsi_update_queue_map(vsi, &ctxt);
7676                         vsi->info.valid_sections = 0;
7677                 } else {
7678                         /* Default/Main VSI is only enabled for TC0
7679                          * reconfigure it to enable all TCs that are
7680                          * available on the port in SFP mode.
7681                          */
7682                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
7683                         if (ret) {
7684                                 dev_info(&pf->pdev->dev,
7685                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %d, aq_err %d\n",
7686                                          enabled_tc, ret,
7687                                          pf->hw.aq.asq_last_status);
7688                                 ret = -ENOENT;
7689                         }
7690                 }
7691                 break;
7692
7693         case I40E_VSI_FDIR:
7694                 ctxt.pf_num = hw->pf_id;
7695                 ctxt.vf_num = 0;
7696                 ctxt.uplink_seid = vsi->uplink_seid;
7697                 ctxt.connection_type = 0x1;     /* regular data port */
7698                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
7699                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
7700                 break;
7701
7702         case I40E_VSI_VMDQ2:
7703                 ctxt.pf_num = hw->pf_id;
7704                 ctxt.vf_num = 0;
7705                 ctxt.uplink_seid = vsi->uplink_seid;
7706                 ctxt.connection_type = 0x1;     /* regular data port */
7707                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
7708
7709                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
7710
7711                 /* This VSI is connected to VEB so the switch_id
7712                  * should be set to zero by default.
7713                  */
7714                 ctxt.info.switch_id = 0;
7715                 ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
7716
7717                 /* Setup the VSI tx/rx queue map for TC0 only for now */
7718                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
7719                 break;
7720
7721         case I40E_VSI_SRIOV:
7722                 ctxt.pf_num = hw->pf_id;
7723                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
7724                 ctxt.uplink_seid = vsi->uplink_seid;
7725                 ctxt.connection_type = 0x1;     /* regular data port */
7726                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
7727
7728                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
7729
7730                 /* This VSI is connected to VEB so the switch_id
7731                  * should be set to zero by default.
7732                  */
7733                 ctxt.info.switch_id = cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
7734
7735                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
7736                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
7737                 if (pf->vf[vsi->vf_id].spoofchk) {
7738                         ctxt.info.valid_sections |=
7739                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
7740                         ctxt.info.sec_flags |=
7741                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
7742                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
7743                 }
7744                 /* Setup the VSI tx/rx queue map for TC0 only for now */
7745                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
7746                 break;
7747
7748 #ifdef I40E_FCOE
7749         case I40E_VSI_FCOE:
7750                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
7751                 if (ret) {
7752                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
7753                         return ret;
7754                 }
7755                 break;
7756
7757 #endif /* I40E_FCOE */
7758         default:
7759                 return -ENODEV;
7760         }
7761
7762         if (vsi->type != I40E_VSI_MAIN) {
7763                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
7764                 if (ret) {
7765                         dev_info(&vsi->back->pdev->dev,
7766                                  "add vsi failed, aq_err=%d\n",
7767                                  vsi->back->hw.aq.asq_last_status);
7768                         ret = -ENOENT;
7769                         goto err;
7770                 }
7771                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
7772                 vsi->info.valid_sections = 0;
7773                 vsi->seid = ctxt.seid;
7774                 vsi->id = ctxt.vsi_number;
7775         }
7776
7777         /* If macvlan filters already exist, force them to get loaded */
7778         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
7779                 f->changed = true;
7780                 f_count++;
7781
7782                 if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
7783                         struct i40e_aqc_remove_macvlan_element_data element;
7784
7785                         memset(&element, 0, sizeof(element));
7786                         ether_addr_copy(element.mac_addr, f->macaddr);
7787                         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
7788                         ret = i40e_aq_remove_macvlan(hw, vsi->seid,
7789                                                      &element, 1, NULL);
7790                         if (ret) {
7791                                 /* some older FW has a different default */
7792                                 element.flags |=
7793                                                I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
7794                                 i40e_aq_remove_macvlan(hw, vsi->seid,
7795                                                        &element, 1, NULL);
7796                         }
7797
7798                         i40e_aq_mac_address_write(hw,
7799                                                   I40E_AQC_WRITE_TYPE_LAA_WOL,
7800                                                   f->macaddr, NULL);
7801                 }
7802         }
7803         if (f_count) {
7804                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
7805                 pf->flags |= I40E_FLAG_FILTER_SYNC;
7806         }
7807
7808         /* Update VSI BW information */
7809         ret = i40e_vsi_get_bw_info(vsi);
7810         if (ret) {
7811                 dev_info(&pf->pdev->dev,
7812                          "couldn't get vsi bw info, err %d, aq_err %d\n",
7813                          ret, pf->hw.aq.asq_last_status);
7814                 /* VSI is already added so not tearing that up */
7815                 ret = 0;
7816         }
7817
7818 err:
7819         return ret;
7820 }
7821
7822 /**
7823  * i40e_vsi_release - Delete a VSI and free its resources
7824  * @vsi: the VSI being removed
7825  *
7826  * Returns 0 on success or < 0 on error
7827  **/
7828 int i40e_vsi_release(struct i40e_vsi *vsi)
7829 {
7830         struct i40e_mac_filter *f, *ftmp;
7831         struct i40e_veb *veb = NULL;
7832         struct i40e_pf *pf;
7833         u16 uplink_seid;
7834         int i, n;
7835
7836         pf = vsi->back;
7837
7838         /* release of a VEB-owner or last VSI is not allowed */
7839         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
7840                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
7841                          vsi->seid, vsi->uplink_seid);
7842                 return -ENODEV;
7843         }
7844         if (vsi == pf->vsi[pf->lan_vsi] &&
7845             !test_bit(__I40E_DOWN, &pf->state)) {
7846                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
7847                 return -ENODEV;
7848         }
7849
7850         uplink_seid = vsi->uplink_seid;
7851         if (vsi->type != I40E_VSI_SRIOV) {
7852                 if (vsi->netdev_registered) {
7853                         vsi->netdev_registered = false;
7854                         if (vsi->netdev) {
7855                                 /* results in a call to i40e_close() */
7856                                 unregister_netdev(vsi->netdev);
7857                         }
7858                 } else {
7859                         i40e_vsi_close(vsi);
7860                 }
7861                 i40e_vsi_disable_irq(vsi);
7862         }
7863
7864         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
7865                 i40e_del_filter(vsi, f->macaddr, f->vlan,
7866                                 f->is_vf, f->is_netdev);
7867         i40e_sync_vsi_filters(vsi);
7868
7869         i40e_vsi_delete(vsi);
7870         i40e_vsi_free_q_vectors(vsi);
7871         if (vsi->netdev) {
7872                 free_netdev(vsi->netdev);
7873                 vsi->netdev = NULL;
7874         }
7875         i40e_vsi_clear_rings(vsi);
7876         i40e_vsi_clear(vsi);
7877
7878         /* If this was the last thing on the VEB, except for the
7879          * controlling VSI, remove the VEB, which puts the controlling
7880          * VSI onto the next level down in the switch.
7881          *
7882          * Well, okay, there's one more exception here: don't remove
7883          * the orphan VEBs yet.  We'll wait for an explicit remove request
7884          * from up the network stack.
7885          */
7886         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
7887                 if (pf->vsi[i] &&
7888                     pf->vsi[i]->uplink_seid == uplink_seid &&
7889                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
7890                         n++;      /* count the VSIs */
7891                 }
7892         }
7893         for (i = 0; i < I40E_MAX_VEB; i++) {
7894                 if (!pf->veb[i])
7895                         continue;
7896                 if (pf->veb[i]->uplink_seid == uplink_seid)
7897                         n++;     /* count the VEBs */
7898                 if (pf->veb[i]->seid == uplink_seid)
7899                         veb = pf->veb[i];
7900         }
7901         if (n == 0 && veb && veb->uplink_seid != 0)
7902                 i40e_veb_release(veb);
7903
7904         return 0;
7905 }
7906
7907 /**
7908  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
7909  * @vsi: ptr to the VSI
7910  *
7911  * This should only be called after i40e_vsi_mem_alloc() which allocates the
7912  * corresponding SW VSI structure and initializes num_queue_pairs for the
7913  * newly allocated VSI.
7914  *
7915  * Returns 0 on success or negative on failure
7916  **/
7917 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
7918 {
7919         int ret = -ENOENT;
7920         struct i40e_pf *pf = vsi->back;
7921
7922         if (vsi->q_vectors[0]) {
7923                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
7924                          vsi->seid);
7925                 return -EEXIST;
7926         }
7927
7928         if (vsi->base_vector) {
7929                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
7930                          vsi->seid, vsi->base_vector);
7931                 return -EEXIST;
7932         }
7933
7934         ret = i40e_vsi_alloc_q_vectors(vsi);
7935         if (ret) {
7936                 dev_info(&pf->pdev->dev,
7937                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
7938                          vsi->num_q_vectors, vsi->seid, ret);
7939                 vsi->num_q_vectors = 0;
7940                 goto vector_setup_out;
7941         }
7942
7943         if (vsi->num_q_vectors)
7944                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
7945                                                  vsi->num_q_vectors, vsi->idx);
7946         if (vsi->base_vector < 0) {
7947                 dev_info(&pf->pdev->dev,
7948                          "failed to get queue tracking for VSI %d, err=%d\n",
7949                          vsi->seid, vsi->base_vector);
7950                 i40e_vsi_free_q_vectors(vsi);
7951                 ret = -ENOENT;
7952                 goto vector_setup_out;
7953         }
7954
7955 vector_setup_out:
7956         return ret;
7957 }
7958
7959 /**
7960  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
7961  * @vsi: pointer to the vsi.
7962  *
7963  * This re-allocates a vsi's queue resources.
7964  *
7965  * Returns pointer to the successfully allocated and configured VSI sw struct
7966  * on success, otherwise returns NULL on failure.
7967  **/
7968 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
7969 {
7970         struct i40e_pf *pf = vsi->back;
7971         u8 enabled_tc;
7972         int ret;
7973
7974         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7975         i40e_vsi_clear_rings(vsi);
7976
7977         i40e_vsi_free_arrays(vsi, false);
7978         i40e_set_num_rings_in_vsi(vsi);
7979         ret = i40e_vsi_alloc_arrays(vsi, false);
7980         if (ret)
7981                 goto err_vsi;
7982
7983         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
7984         if (ret < 0) {
7985                 dev_info(&pf->pdev->dev, "VSI %d get_lump failed %d\n",
7986                          vsi->seid, ret);
7987                 goto err_vsi;
7988         }
7989         vsi->base_queue = ret;
7990
7991         /* Update the FW view of the VSI. Force a reset of TC and queue
7992          * layout configurations.
7993          */
7994         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
7995         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
7996         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
7997         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
7998
7999         /* assign it some queues */
8000         ret = i40e_alloc_rings(vsi);
8001         if (ret)
8002                 goto err_rings;
8003
8004         /* map all of the rings to the q_vectors */
8005         i40e_vsi_map_rings_to_vectors(vsi);
8006         return vsi;
8007
8008 err_rings:
8009         i40e_vsi_free_q_vectors(vsi);
8010         if (vsi->netdev_registered) {
8011                 vsi->netdev_registered = false;
8012                 unregister_netdev(vsi->netdev);
8013                 free_netdev(vsi->netdev);
8014                 vsi->netdev = NULL;
8015         }
8016         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
8017 err_vsi:
8018         i40e_vsi_clear(vsi);
8019         return NULL;
8020 }
8021
8022 /**
8023  * i40e_vsi_setup - Set up a VSI by a given type
8024  * @pf: board private structure
8025  * @type: VSI type
8026  * @uplink_seid: the switch element to link to
8027  * @param1: usage depends upon VSI type. For VF types, indicates VF id
8028  *
8029  * This allocates the sw VSI structure and its queue resources, then add a VSI
8030  * to the identified VEB.
8031  *
8032  * Returns pointer to the successfully allocated and configure VSI sw struct on
8033  * success, otherwise returns NULL on failure.
8034  **/
8035 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
8036                                 u16 uplink_seid, u32 param1)
8037 {
8038         struct i40e_vsi *vsi = NULL;
8039         struct i40e_veb *veb = NULL;
8040         int ret, i;
8041         int v_idx;
8042
8043         /* The requested uplink_seid must be either
8044          *     - the PF's port seid
8045          *              no VEB is needed because this is the PF
8046          *              or this is a Flow Director special case VSI
8047          *     - seid of an existing VEB
8048          *     - seid of a VSI that owns an existing VEB
8049          *     - seid of a VSI that doesn't own a VEB
8050          *              a new VEB is created and the VSI becomes the owner
8051          *     - seid of the PF VSI, which is what creates the first VEB
8052          *              this is a special case of the previous
8053          *
8054          * Find which uplink_seid we were given and create a new VEB if needed
8055          */
8056         for (i = 0; i < I40E_MAX_VEB; i++) {
8057                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
8058                         veb = pf->veb[i];
8059                         break;
8060                 }
8061         }
8062
8063         if (!veb && uplink_seid != pf->mac_seid) {
8064
8065                 for (i = 0; i < pf->num_alloc_vsi; i++) {
8066                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
8067                                 vsi = pf->vsi[i];
8068                                 break;
8069                         }
8070                 }
8071                 if (!vsi) {
8072                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
8073                                  uplink_seid);
8074                         return NULL;
8075                 }
8076
8077                 if (vsi->uplink_seid == pf->mac_seid)
8078                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
8079                                              vsi->tc_config.enabled_tc);
8080                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
8081                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8082                                              vsi->tc_config.enabled_tc);
8083
8084                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8085                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8086                                 veb = pf->veb[i];
8087                 }
8088                 if (!veb) {
8089                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
8090                         return NULL;
8091                 }
8092
8093                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
8094                 uplink_seid = veb->seid;
8095         }
8096
8097         /* get vsi sw struct */
8098         v_idx = i40e_vsi_mem_alloc(pf, type);
8099         if (v_idx < 0)
8100                 goto err_alloc;
8101         vsi = pf->vsi[v_idx];
8102         if (!vsi)
8103                 goto err_alloc;
8104         vsi->type = type;
8105         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
8106
8107         if (type == I40E_VSI_MAIN)
8108                 pf->lan_vsi = v_idx;
8109         else if (type == I40E_VSI_SRIOV)
8110                 vsi->vf_id = param1;
8111         /* assign it some queues */
8112         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
8113                                 vsi->idx);
8114         if (ret < 0) {
8115                 dev_info(&pf->pdev->dev, "VSI %d get_lump failed %d\n",
8116                          vsi->seid, ret);
8117                 goto err_vsi;
8118         }
8119         vsi->base_queue = ret;
8120
8121         /* get a VSI from the hardware */
8122         vsi->uplink_seid = uplink_seid;
8123         ret = i40e_add_vsi(vsi);
8124         if (ret)
8125                 goto err_vsi;
8126
8127         switch (vsi->type) {
8128         /* setup the netdev if needed */
8129         case I40E_VSI_MAIN:
8130         case I40E_VSI_VMDQ2:
8131         case I40E_VSI_FCOE:
8132                 ret = i40e_config_netdev(vsi);
8133                 if (ret)
8134                         goto err_netdev;
8135                 ret = register_netdev(vsi->netdev);
8136                 if (ret)
8137                         goto err_netdev;
8138                 vsi->netdev_registered = true;
8139                 netif_carrier_off(vsi->netdev);
8140 #ifdef CONFIG_I40E_DCB
8141                 /* Setup DCB netlink interface */
8142                 i40e_dcbnl_setup(vsi);
8143 #endif /* CONFIG_I40E_DCB */
8144                 /* fall through */
8145
8146         case I40E_VSI_FDIR:
8147                 /* set up vectors and rings if needed */
8148                 ret = i40e_vsi_setup_vectors(vsi);
8149                 if (ret)
8150                         goto err_msix;
8151
8152                 ret = i40e_alloc_rings(vsi);
8153                 if (ret)
8154                         goto err_rings;
8155
8156                 /* map all of the rings to the q_vectors */
8157                 i40e_vsi_map_rings_to_vectors(vsi);
8158
8159                 i40e_vsi_reset_stats(vsi);
8160                 break;
8161
8162         default:
8163                 /* no netdev or rings for the other VSI types */
8164                 break;
8165         }
8166
8167         return vsi;
8168
8169 err_rings:
8170         i40e_vsi_free_q_vectors(vsi);
8171 err_msix:
8172         if (vsi->netdev_registered) {
8173                 vsi->netdev_registered = false;
8174                 unregister_netdev(vsi->netdev);
8175                 free_netdev(vsi->netdev);
8176                 vsi->netdev = NULL;
8177         }
8178 err_netdev:
8179         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
8180 err_vsi:
8181         i40e_vsi_clear(vsi);
8182 err_alloc:
8183         return NULL;
8184 }
8185
8186 /**
8187  * i40e_veb_get_bw_info - Query VEB BW information
8188  * @veb: the veb to query
8189  *
8190  * Query the Tx scheduler BW configuration data for given VEB
8191  **/
8192 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
8193 {
8194         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
8195         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
8196         struct i40e_pf *pf = veb->pf;
8197         struct i40e_hw *hw = &pf->hw;
8198         u32 tc_bw_max;
8199         int ret = 0;
8200         int i;
8201
8202         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
8203                                                   &bw_data, NULL);
8204         if (ret) {
8205                 dev_info(&pf->pdev->dev,
8206                          "query veb bw config failed, aq_err=%d\n",
8207                          hw->aq.asq_last_status);
8208                 goto out;
8209         }
8210
8211         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
8212                                                    &ets_data, NULL);
8213         if (ret) {
8214                 dev_info(&pf->pdev->dev,
8215                          "query veb bw ets config failed, aq_err=%d\n",
8216                          hw->aq.asq_last_status);
8217                 goto out;
8218         }
8219
8220         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
8221         veb->bw_max_quanta = ets_data.tc_bw_max;
8222         veb->is_abs_credits = bw_data.absolute_credits_enable;
8223         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
8224                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
8225         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
8226                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
8227                 veb->bw_tc_limit_credits[i] =
8228                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
8229                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
8230         }
8231
8232 out:
8233         return ret;
8234 }
8235
8236 /**
8237  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
8238  * @pf: board private structure
8239  *
8240  * On error: returns error code (negative)
8241  * On success: returns vsi index in PF (positive)
8242  **/
8243 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
8244 {
8245         int ret = -ENOENT;
8246         struct i40e_veb *veb;
8247         int i;
8248
8249         /* Need to protect the allocation of switch elements at the PF level */
8250         mutex_lock(&pf->switch_mutex);
8251
8252         /* VEB list may be fragmented if VEB creation/destruction has
8253          * been happening.  We can afford to do a quick scan to look
8254          * for any free slots in the list.
8255          *
8256          * find next empty veb slot, looping back around if necessary
8257          */
8258         i = 0;
8259         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
8260                 i++;
8261         if (i >= I40E_MAX_VEB) {
8262                 ret = -ENOMEM;
8263                 goto err_alloc_veb;  /* out of VEB slots! */
8264         }
8265
8266         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
8267         if (!veb) {
8268                 ret = -ENOMEM;
8269                 goto err_alloc_veb;
8270         }
8271         veb->pf = pf;
8272         veb->idx = i;
8273         veb->enabled_tc = 1;
8274
8275         pf->veb[i] = veb;
8276         ret = i;
8277 err_alloc_veb:
8278         mutex_unlock(&pf->switch_mutex);
8279         return ret;
8280 }
8281
8282 /**
8283  * i40e_switch_branch_release - Delete a branch of the switch tree
8284  * @branch: where to start deleting
8285  *
8286  * This uses recursion to find the tips of the branch to be
8287  * removed, deleting until we get back to and can delete this VEB.
8288  **/
8289 static void i40e_switch_branch_release(struct i40e_veb *branch)
8290 {
8291         struct i40e_pf *pf = branch->pf;
8292         u16 branch_seid = branch->seid;
8293         u16 veb_idx = branch->idx;
8294         int i;
8295
8296         /* release any VEBs on this VEB - RECURSION */
8297         for (i = 0; i < I40E_MAX_VEB; i++) {
8298                 if (!pf->veb[i])
8299                         continue;
8300                 if (pf->veb[i]->uplink_seid == branch->seid)
8301                         i40e_switch_branch_release(pf->veb[i]);
8302         }
8303
8304         /* Release the VSIs on this VEB, but not the owner VSI.
8305          *
8306          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
8307          *       the VEB itself, so don't use (*branch) after this loop.
8308          */
8309         for (i = 0; i < pf->num_alloc_vsi; i++) {
8310                 if (!pf->vsi[i])
8311                         continue;
8312                 if (pf->vsi[i]->uplink_seid == branch_seid &&
8313                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
8314                         i40e_vsi_release(pf->vsi[i]);
8315                 }
8316         }
8317
8318         /* There's one corner case where the VEB might not have been
8319          * removed, so double check it here and remove it if needed.
8320          * This case happens if the veb was created from the debugfs
8321          * commands and no VSIs were added to it.
8322          */
8323         if (pf->veb[veb_idx])
8324                 i40e_veb_release(pf->veb[veb_idx]);
8325 }
8326
8327 /**
8328  * i40e_veb_clear - remove veb struct
8329  * @veb: the veb to remove
8330  **/
8331 static void i40e_veb_clear(struct i40e_veb *veb)
8332 {
8333         if (!veb)
8334                 return;
8335
8336         if (veb->pf) {
8337                 struct i40e_pf *pf = veb->pf;
8338
8339                 mutex_lock(&pf->switch_mutex);
8340                 if (pf->veb[veb->idx] == veb)
8341                         pf->veb[veb->idx] = NULL;
8342                 mutex_unlock(&pf->switch_mutex);
8343         }
8344
8345         kfree(veb);
8346 }
8347
8348 /**
8349  * i40e_veb_release - Delete a VEB and free its resources
8350  * @veb: the VEB being removed
8351  **/
8352 void i40e_veb_release(struct i40e_veb *veb)
8353 {
8354         struct i40e_vsi *vsi = NULL;
8355         struct i40e_pf *pf;
8356         int i, n = 0;
8357
8358         pf = veb->pf;
8359
8360         /* find the remaining VSI and check for extras */
8361         for (i = 0; i < pf->num_alloc_vsi; i++) {
8362                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
8363                         n++;
8364                         vsi = pf->vsi[i];
8365                 }
8366         }
8367         if (n != 1) {
8368                 dev_info(&pf->pdev->dev,
8369                          "can't remove VEB %d with %d VSIs left\n",
8370                          veb->seid, n);
8371                 return;
8372         }
8373
8374         /* move the remaining VSI to uplink veb */
8375         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
8376         if (veb->uplink_seid) {
8377                 vsi->uplink_seid = veb->uplink_seid;
8378                 if (veb->uplink_seid == pf->mac_seid)
8379                         vsi->veb_idx = I40E_NO_VEB;
8380                 else
8381                         vsi->veb_idx = veb->veb_idx;
8382         } else {
8383                 /* floating VEB */
8384                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
8385                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
8386         }
8387
8388         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
8389         i40e_veb_clear(veb);
8390 }
8391
8392 /**
8393  * i40e_add_veb - create the VEB in the switch
8394  * @veb: the VEB to be instantiated
8395  * @vsi: the controlling VSI
8396  **/
8397 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
8398 {
8399         bool is_default = false;
8400         bool is_cloud = false;
8401         int ret;
8402
8403         /* get a VEB from the hardware */
8404         ret = i40e_aq_add_veb(&veb->pf->hw, veb->uplink_seid, vsi->seid,
8405                               veb->enabled_tc, is_default,
8406                               is_cloud, &veb->seid, NULL);
8407         if (ret) {
8408                 dev_info(&veb->pf->pdev->dev,
8409                          "couldn't add VEB, err %d, aq_err %d\n",
8410                          ret, veb->pf->hw.aq.asq_last_status);
8411                 return -EPERM;
8412         }
8413
8414         /* get statistics counter */
8415         ret = i40e_aq_get_veb_parameters(&veb->pf->hw, veb->seid, NULL, NULL,
8416                                          &veb->stats_idx, NULL, NULL, NULL);
8417         if (ret) {
8418                 dev_info(&veb->pf->pdev->dev,
8419                          "couldn't get VEB statistics idx, err %d, aq_err %d\n",
8420                          ret, veb->pf->hw.aq.asq_last_status);
8421                 return -EPERM;
8422         }
8423         ret = i40e_veb_get_bw_info(veb);
8424         if (ret) {
8425                 dev_info(&veb->pf->pdev->dev,
8426                          "couldn't get VEB bw info, err %d, aq_err %d\n",
8427                          ret, veb->pf->hw.aq.asq_last_status);
8428                 i40e_aq_delete_element(&veb->pf->hw, veb->seid, NULL);
8429                 return -ENOENT;
8430         }
8431
8432         vsi->uplink_seid = veb->seid;
8433         vsi->veb_idx = veb->idx;
8434         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
8435
8436         return 0;
8437 }
8438
8439 /**
8440  * i40e_veb_setup - Set up a VEB
8441  * @pf: board private structure
8442  * @flags: VEB setup flags
8443  * @uplink_seid: the switch element to link to
8444  * @vsi_seid: the initial VSI seid
8445  * @enabled_tc: Enabled TC bit-map
8446  *
8447  * This allocates the sw VEB structure and links it into the switch
8448  * It is possible and legal for this to be a duplicate of an already
8449  * existing VEB.  It is also possible for both uplink and vsi seids
8450  * to be zero, in order to create a floating VEB.
8451  *
8452  * Returns pointer to the successfully allocated VEB sw struct on
8453  * success, otherwise returns NULL on failure.
8454  **/
8455 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
8456                                 u16 uplink_seid, u16 vsi_seid,
8457                                 u8 enabled_tc)
8458 {
8459         struct i40e_veb *veb, *uplink_veb = NULL;
8460         int vsi_idx, veb_idx;
8461         int ret;
8462
8463         /* if one seid is 0, the other must be 0 to create a floating relay */
8464         if ((uplink_seid == 0 || vsi_seid == 0) &&
8465             (uplink_seid + vsi_seid != 0)) {
8466                 dev_info(&pf->pdev->dev,
8467                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
8468                          uplink_seid, vsi_seid);
8469                 return NULL;
8470         }
8471
8472         /* make sure there is such a vsi and uplink */
8473         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
8474                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
8475                         break;
8476         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
8477                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
8478                          vsi_seid);
8479                 return NULL;
8480         }
8481
8482         if (uplink_seid && uplink_seid != pf->mac_seid) {
8483                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
8484                         if (pf->veb[veb_idx] &&
8485                             pf->veb[veb_idx]->seid == uplink_seid) {
8486                                 uplink_veb = pf->veb[veb_idx];
8487                                 break;
8488                         }
8489                 }
8490                 if (!uplink_veb) {
8491                         dev_info(&pf->pdev->dev,
8492                                  "uplink seid %d not found\n", uplink_seid);
8493                         return NULL;
8494                 }
8495         }
8496
8497         /* get veb sw struct */
8498         veb_idx = i40e_veb_mem_alloc(pf);
8499         if (veb_idx < 0)
8500                 goto err_alloc;
8501         veb = pf->veb[veb_idx];
8502         veb->flags = flags;
8503         veb->uplink_seid = uplink_seid;
8504         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
8505         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
8506
8507         /* create the VEB in the switch */
8508         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
8509         if (ret)
8510                 goto err_veb;
8511         if (vsi_idx == pf->lan_vsi)
8512                 pf->lan_veb = veb->idx;
8513
8514         return veb;
8515
8516 err_veb:
8517         i40e_veb_clear(veb);
8518 err_alloc:
8519         return NULL;
8520 }
8521
8522 /**
8523  * i40e_setup_pf_switch_element - set pf vars based on switch type
8524  * @pf: board private structure
8525  * @ele: element we are building info from
8526  * @num_reported: total number of elements
8527  * @printconfig: should we print the contents
8528  *
8529  * helper function to assist in extracting a few useful SEID values.
8530  **/
8531 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
8532                                 struct i40e_aqc_switch_config_element_resp *ele,
8533                                 u16 num_reported, bool printconfig)
8534 {
8535         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
8536         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
8537         u8 element_type = ele->element_type;
8538         u16 seid = le16_to_cpu(ele->seid);
8539
8540         if (printconfig)
8541                 dev_info(&pf->pdev->dev,
8542                          "type=%d seid=%d uplink=%d downlink=%d\n",
8543                          element_type, seid, uplink_seid, downlink_seid);
8544
8545         switch (element_type) {
8546         case I40E_SWITCH_ELEMENT_TYPE_MAC:
8547                 pf->mac_seid = seid;
8548                 break;
8549         case I40E_SWITCH_ELEMENT_TYPE_VEB:
8550                 /* Main VEB? */
8551                 if (uplink_seid != pf->mac_seid)
8552                         break;
8553                 if (pf->lan_veb == I40E_NO_VEB) {
8554                         int v;
8555
8556                         /* find existing or else empty VEB */
8557                         for (v = 0; v < I40E_MAX_VEB; v++) {
8558                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
8559                                         pf->lan_veb = v;
8560                                         break;
8561                                 }
8562                         }
8563                         if (pf->lan_veb == I40E_NO_VEB) {
8564                                 v = i40e_veb_mem_alloc(pf);
8565                                 if (v < 0)
8566                                         break;
8567                                 pf->lan_veb = v;
8568                         }
8569                 }
8570
8571                 pf->veb[pf->lan_veb]->seid = seid;
8572                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
8573                 pf->veb[pf->lan_veb]->pf = pf;
8574                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
8575                 break;
8576         case I40E_SWITCH_ELEMENT_TYPE_VSI:
8577                 if (num_reported != 1)
8578                         break;
8579                 /* This is immediately after a reset so we can assume this is
8580                  * the PF's VSI
8581                  */
8582                 pf->mac_seid = uplink_seid;
8583                 pf->pf_seid = downlink_seid;
8584                 pf->main_vsi_seid = seid;
8585                 if (printconfig)
8586                         dev_info(&pf->pdev->dev,
8587                                  "pf_seid=%d main_vsi_seid=%d\n",
8588                                  pf->pf_seid, pf->main_vsi_seid);
8589                 break;
8590         case I40E_SWITCH_ELEMENT_TYPE_PF:
8591         case I40E_SWITCH_ELEMENT_TYPE_VF:
8592         case I40E_SWITCH_ELEMENT_TYPE_EMP:
8593         case I40E_SWITCH_ELEMENT_TYPE_BMC:
8594         case I40E_SWITCH_ELEMENT_TYPE_PE:
8595         case I40E_SWITCH_ELEMENT_TYPE_PA:
8596                 /* ignore these for now */
8597                 break;
8598         default:
8599                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
8600                          element_type, seid);
8601                 break;
8602         }
8603 }
8604
8605 /**
8606  * i40e_fetch_switch_configuration - Get switch config from firmware
8607  * @pf: board private structure
8608  * @printconfig: should we print the contents
8609  *
8610  * Get the current switch configuration from the device and
8611  * extract a few useful SEID values.
8612  **/
8613 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
8614 {
8615         struct i40e_aqc_get_switch_config_resp *sw_config;
8616         u16 next_seid = 0;
8617         int ret = 0;
8618         u8 *aq_buf;
8619         int i;
8620
8621         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
8622         if (!aq_buf)
8623                 return -ENOMEM;
8624
8625         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
8626         do {
8627                 u16 num_reported, num_total;
8628
8629                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
8630                                                 I40E_AQ_LARGE_BUF,
8631                                                 &next_seid, NULL);
8632                 if (ret) {
8633                         dev_info(&pf->pdev->dev,
8634                                  "get switch config failed %d aq_err=%x\n",
8635                                  ret, pf->hw.aq.asq_last_status);
8636                         kfree(aq_buf);
8637                         return -ENOENT;
8638                 }
8639
8640                 num_reported = le16_to_cpu(sw_config->header.num_reported);
8641                 num_total = le16_to_cpu(sw_config->header.num_total);
8642
8643                 if (printconfig)
8644                         dev_info(&pf->pdev->dev,
8645                                  "header: %d reported %d total\n",
8646                                  num_reported, num_total);
8647
8648                 for (i = 0; i < num_reported; i++) {
8649                         struct i40e_aqc_switch_config_element_resp *ele =
8650                                 &sw_config->element[i];
8651
8652                         i40e_setup_pf_switch_element(pf, ele, num_reported,
8653                                                      printconfig);
8654                 }
8655         } while (next_seid != 0);
8656
8657         kfree(aq_buf);
8658         return ret;
8659 }
8660
8661 /**
8662  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
8663  * @pf: board private structure
8664  * @reinit: if the Main VSI needs to re-initialized.
8665  *
8666  * Returns 0 on success, negative value on failure
8667  **/
8668 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
8669 {
8670         int ret;
8671
8672         /* find out what's out there already */
8673         ret = i40e_fetch_switch_configuration(pf, false);
8674         if (ret) {
8675                 dev_info(&pf->pdev->dev,
8676                          "couldn't fetch switch config, err %d, aq_err %d\n",
8677                          ret, pf->hw.aq.asq_last_status);
8678                 return ret;
8679         }
8680         i40e_pf_reset_stats(pf);
8681
8682         /* first time setup */
8683         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
8684                 struct i40e_vsi *vsi = NULL;
8685                 u16 uplink_seid;
8686
8687                 /* Set up the PF VSI associated with the PF's main VSI
8688                  * that is already in the HW switch
8689                  */
8690                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
8691                         uplink_seid = pf->veb[pf->lan_veb]->seid;
8692                 else
8693                         uplink_seid = pf->mac_seid;
8694                 if (pf->lan_vsi == I40E_NO_VSI)
8695                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
8696                 else if (reinit)
8697                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
8698                 if (!vsi) {
8699                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
8700                         i40e_fdir_teardown(pf);
8701                         return -EAGAIN;
8702                 }
8703         } else {
8704                 /* force a reset of TC and queue layout configurations */
8705                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
8706                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
8707                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
8708                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
8709         }
8710         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
8711
8712         i40e_fdir_sb_setup(pf);
8713
8714         /* Setup static PF queue filter control settings */
8715         ret = i40e_setup_pf_filter_control(pf);
8716         if (ret) {
8717                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
8718                          ret);
8719                 /* Failure here should not stop continuing other steps */
8720         }
8721
8722         /* enable RSS in the HW, even for only one queue, as the stack can use
8723          * the hash
8724          */
8725         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
8726                 i40e_config_rss(pf);
8727
8728         /* fill in link information and enable LSE reporting */
8729         i40e_update_link_info(&pf->hw, true);
8730         i40e_link_event(pf);
8731
8732         /* Initialize user-specific link properties */
8733         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
8734                                   I40E_AQ_AN_COMPLETED) ? true : false);
8735
8736         /* fill in link information and enable LSE reporting */
8737         i40e_update_link_info(&pf->hw, true);
8738         i40e_link_event(pf);
8739
8740         /* Initialize user-specific link properties */
8741         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
8742                                   I40E_AQ_AN_COMPLETED) ? true : false);
8743
8744         i40e_ptp_init(pf);
8745
8746         return ret;
8747 }
8748
8749 /**
8750  * i40e_determine_queue_usage - Work out queue distribution
8751  * @pf: board private structure
8752  **/
8753 static void i40e_determine_queue_usage(struct i40e_pf *pf)
8754 {
8755         int queues_left;
8756
8757         pf->num_lan_qps = 0;
8758 #ifdef I40E_FCOE
8759         pf->num_fcoe_qps = 0;
8760 #endif
8761
8762         /* Find the max queues to be put into basic use.  We'll always be
8763          * using TC0, whether or not DCB is running, and TC0 will get the
8764          * big RSS set.
8765          */
8766         queues_left = pf->hw.func_caps.num_tx_qp;
8767
8768         if ((queues_left == 1) ||
8769             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
8770                 /* one qp for PF, no queues for anything else */
8771                 queues_left = 0;
8772                 pf->rss_size = pf->num_lan_qps = 1;
8773
8774                 /* make sure all the fancies are disabled */
8775                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
8776 #ifdef I40E_FCOE
8777                                I40E_FLAG_FCOE_ENABLED   |
8778 #endif
8779                                I40E_FLAG_FD_SB_ENABLED  |
8780                                I40E_FLAG_FD_ATR_ENABLED |
8781                                I40E_FLAG_DCB_CAPABLE    |
8782                                I40E_FLAG_SRIOV_ENABLED  |
8783                                I40E_FLAG_VMDQ_ENABLED);
8784         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
8785                                   I40E_FLAG_FD_SB_ENABLED |
8786                                   I40E_FLAG_FD_ATR_ENABLED |
8787                                   I40E_FLAG_DCB_CAPABLE))) {
8788                 /* one qp for PF */
8789                 pf->rss_size = pf->num_lan_qps = 1;
8790                 queues_left -= pf->num_lan_qps;
8791
8792                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
8793 #ifdef I40E_FCOE
8794                                I40E_FLAG_FCOE_ENABLED   |
8795 #endif
8796                                I40E_FLAG_FD_SB_ENABLED  |
8797                                I40E_FLAG_FD_ATR_ENABLED |
8798                                I40E_FLAG_DCB_ENABLED    |
8799                                I40E_FLAG_VMDQ_ENABLED);
8800         } else {
8801                 /* Not enough queues for all TCs */
8802                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
8803                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
8804                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
8805                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
8806                 }
8807                 pf->num_lan_qps = pf->rss_size_max;
8808                 queues_left -= pf->num_lan_qps;
8809         }
8810
8811 #ifdef I40E_FCOE
8812         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
8813                 if (I40E_DEFAULT_FCOE <= queues_left) {
8814                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
8815                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
8816                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
8817                 } else {
8818                         pf->num_fcoe_qps = 0;
8819                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
8820                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
8821                 }
8822
8823                 queues_left -= pf->num_fcoe_qps;
8824         }
8825
8826 #endif
8827         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8828                 if (queues_left > 1) {
8829                         queues_left -= 1; /* save 1 queue for FD */
8830                 } else {
8831                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8832                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
8833                 }
8834         }
8835
8836         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
8837             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
8838                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
8839                                         (queues_left / pf->num_vf_qps));
8840                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
8841         }
8842
8843         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
8844             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
8845                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
8846                                           (queues_left / pf->num_vmdq_qps));
8847                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
8848         }
8849
8850         pf->queues_left = queues_left;
8851 #ifdef I40E_FCOE
8852         dev_info(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
8853 #endif
8854 }
8855
8856 /**
8857  * i40e_setup_pf_filter_control - Setup PF static filter control
8858  * @pf: PF to be setup
8859  *
8860  * i40e_setup_pf_filter_control sets up a pf's initial filter control
8861  * settings. If PE/FCoE are enabled then it will also set the per PF
8862  * based filter sizes required for them. It also enables Flow director,
8863  * ethertype and macvlan type filter settings for the pf.
8864  *
8865  * Returns 0 on success, negative on failure
8866  **/
8867 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
8868 {
8869         struct i40e_filter_control_settings *settings = &pf->filter_settings;
8870
8871         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
8872
8873         /* Flow Director is enabled */
8874         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
8875                 settings->enable_fdir = true;
8876
8877         /* Ethtype and MACVLAN filters enabled for PF */
8878         settings->enable_ethtype = true;
8879         settings->enable_macvlan = true;
8880
8881         if (i40e_set_filter_control(&pf->hw, settings))
8882                 return -ENOENT;
8883
8884         return 0;
8885 }
8886
8887 #define INFO_STRING_LEN 255
8888 static void i40e_print_features(struct i40e_pf *pf)
8889 {
8890         struct i40e_hw *hw = &pf->hw;
8891         char *buf, *string;
8892
8893         string = kzalloc(INFO_STRING_LEN, GFP_KERNEL);
8894         if (!string) {
8895                 dev_err(&pf->pdev->dev, "Features string allocation failed\n");
8896                 return;
8897         }
8898
8899         buf = string;
8900
8901         buf += sprintf(string, "Features: PF-id[%d] ", hw->pf_id);
8902 #ifdef CONFIG_PCI_IOV
8903         buf += sprintf(buf, "VFs: %d ", pf->num_req_vfs);
8904 #endif
8905         buf += sprintf(buf, "VSIs: %d QP: %d ", pf->hw.func_caps.num_vsis,
8906                        pf->vsi[pf->lan_vsi]->num_queue_pairs);
8907
8908         if (pf->flags & I40E_FLAG_RSS_ENABLED)
8909                 buf += sprintf(buf, "RSS ");
8910         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
8911                 buf += sprintf(buf, "FD_ATR ");
8912         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8913                 buf += sprintf(buf, "FD_SB ");
8914                 buf += sprintf(buf, "NTUPLE ");
8915         }
8916         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
8917                 buf += sprintf(buf, "DCB ");
8918         if (pf->flags & I40E_FLAG_PTP)
8919                 buf += sprintf(buf, "PTP ");
8920 #ifdef I40E_FCOE
8921         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
8922                 buf += sprintf(buf, "FCOE ");
8923 #endif
8924
8925         BUG_ON(buf > (string + INFO_STRING_LEN));
8926         dev_info(&pf->pdev->dev, "%s\n", string);
8927         kfree(string);
8928 }
8929
8930 /**
8931  * i40e_probe - Device initialization routine
8932  * @pdev: PCI device information struct
8933  * @ent: entry in i40e_pci_tbl
8934  *
8935  * i40e_probe initializes a pf identified by a pci_dev structure.
8936  * The OS initialization, configuring of the pf private structure,
8937  * and a hardware reset occur.
8938  *
8939  * Returns 0 on success, negative on failure
8940  **/
8941 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
8942 {
8943         struct i40e_pf *pf;
8944         struct i40e_hw *hw;
8945         static u16 pfs_found;
8946         u16 link_status;
8947         int err = 0;
8948         u32 len;
8949         u32 i;
8950
8951         err = pci_enable_device_mem(pdev);
8952         if (err)
8953                 return err;
8954
8955         /* set up for high or low dma */
8956         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
8957         if (err) {
8958                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
8959                 if (err) {
8960                         dev_err(&pdev->dev,
8961                                 "DMA configuration failed: 0x%x\n", err);
8962                         goto err_dma;
8963                 }
8964         }
8965
8966         /* set up pci connections */
8967         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
8968                                            IORESOURCE_MEM), i40e_driver_name);
8969         if (err) {
8970                 dev_info(&pdev->dev,
8971                          "pci_request_selected_regions failed %d\n", err);
8972                 goto err_pci_reg;
8973         }
8974
8975         pci_enable_pcie_error_reporting(pdev);
8976         pci_set_master(pdev);
8977
8978         /* Now that we have a PCI connection, we need to do the
8979          * low level device setup.  This is primarily setting up
8980          * the Admin Queue structures and then querying for the
8981          * device's current profile information.
8982          */
8983         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
8984         if (!pf) {
8985                 err = -ENOMEM;
8986                 goto err_pf_alloc;
8987         }
8988         pf->next_vsi = 0;
8989         pf->pdev = pdev;
8990         set_bit(__I40E_DOWN, &pf->state);
8991
8992         hw = &pf->hw;
8993         hw->back = pf;
8994         hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
8995                               pci_resource_len(pdev, 0));
8996         if (!hw->hw_addr) {
8997                 err = -EIO;
8998                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
8999                          (unsigned int)pci_resource_start(pdev, 0),
9000                          (unsigned int)pci_resource_len(pdev, 0), err);
9001                 goto err_ioremap;
9002         }
9003         hw->vendor_id = pdev->vendor;
9004         hw->device_id = pdev->device;
9005         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
9006         hw->subsystem_vendor_id = pdev->subsystem_vendor;
9007         hw->subsystem_device_id = pdev->subsystem_device;
9008         hw->bus.device = PCI_SLOT(pdev->devfn);
9009         hw->bus.func = PCI_FUNC(pdev->devfn);
9010         pf->instance = pfs_found;
9011
9012         /* do a special CORER for clearing PXE mode once at init */
9013         if (hw->revision_id == 0 &&
9014             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
9015                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
9016                 i40e_flush(hw);
9017                 msleep(200);
9018                 pf->corer_count++;
9019
9020                 i40e_clear_pxe_mode(hw);
9021         }
9022
9023         /* Reset here to make sure all is clean and to define PF 'n' */
9024         i40e_clear_hw(hw);
9025         err = i40e_pf_reset(hw);
9026         if (err) {
9027                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
9028                 goto err_pf_reset;
9029         }
9030         pf->pfr_count++;
9031
9032         hw->aq.num_arq_entries = I40E_AQ_LEN;
9033         hw->aq.num_asq_entries = I40E_AQ_LEN;
9034         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
9035         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
9036         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
9037         snprintf(pf->misc_int_name, sizeof(pf->misc_int_name) - 1,
9038                  "%s-pf%d:misc",
9039                  dev_driver_string(&pf->pdev->dev), pf->hw.pf_id);
9040
9041         err = i40e_init_shared_code(hw);
9042         if (err) {
9043                 dev_info(&pdev->dev, "init_shared_code failed: %d\n", err);
9044                 goto err_pf_reset;
9045         }
9046
9047         /* set up a default setting for link flow control */
9048         pf->hw.fc.requested_mode = I40E_FC_NONE;
9049
9050         err = i40e_init_adminq(hw);
9051         dev_info(&pdev->dev, "%s\n", i40e_fw_version_str(hw));
9052         if (err) {
9053                 dev_info(&pdev->dev,
9054                          "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");
9055                 goto err_pf_reset;
9056         }
9057
9058         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
9059             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
9060                 dev_info(&pdev->dev,
9061                          "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");
9062         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
9063                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
9064                 dev_info(&pdev->dev,
9065                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
9066
9067
9068         i40e_verify_eeprom(pf);
9069
9070         /* Rev 0 hardware was never productized */
9071         if (hw->revision_id < 1)
9072                 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");
9073
9074         i40e_clear_pxe_mode(hw);
9075         err = i40e_get_capabilities(pf);
9076         if (err)
9077                 goto err_adminq_setup;
9078
9079         err = i40e_sw_init(pf);
9080         if (err) {
9081                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
9082                 goto err_sw_init;
9083         }
9084
9085         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
9086                                 hw->func_caps.num_rx_qp,
9087                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
9088         if (err) {
9089                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
9090                 goto err_init_lan_hmc;
9091         }
9092
9093         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
9094         if (err) {
9095                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
9096                 err = -ENOENT;
9097                 goto err_configure_lan_hmc;
9098         }
9099
9100         i40e_get_mac_addr(hw, hw->mac.addr);
9101         if (!is_valid_ether_addr(hw->mac.addr)) {
9102                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
9103                 err = -EIO;
9104                 goto err_mac_addr;
9105         }
9106         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
9107         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
9108         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
9109         if (is_valid_ether_addr(hw->mac.port_addr))
9110                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
9111 #ifdef I40E_FCOE
9112         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
9113         if (err)
9114                 dev_info(&pdev->dev,
9115                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
9116         if (!is_valid_ether_addr(hw->mac.san_addr)) {
9117                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
9118                          hw->mac.san_addr);
9119                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
9120         }
9121         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
9122 #endif /* I40E_FCOE */
9123
9124         pci_set_drvdata(pdev, pf);
9125         pci_save_state(pdev);
9126 #ifdef CONFIG_I40E_DCB
9127         err = i40e_init_pf_dcb(pf);
9128         if (err) {
9129                 dev_info(&pdev->dev, "init_pf_dcb failed: %d\n", err);
9130                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
9131                 /* Continue without DCB enabled */
9132         }
9133 #endif /* CONFIG_I40E_DCB */
9134
9135         /* set up periodic task facility */
9136         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
9137         pf->service_timer_period = HZ;
9138
9139         INIT_WORK(&pf->service_task, i40e_service_task);
9140         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
9141         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
9142         pf->link_check_timeout = jiffies;
9143
9144         /* WoL defaults to disabled */
9145         pf->wol_en = false;
9146         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
9147
9148         /* set up the main switch operations */
9149         i40e_determine_queue_usage(pf);
9150         i40e_init_interrupt_scheme(pf);
9151
9152         /* The number of VSIs reported by the FW is the minimum guaranteed
9153          * to us; HW supports far more and we share the remaining pool with
9154          * the other PFs. We allocate space for more than the guarantee with
9155          * the understanding that we might not get them all later.
9156          */
9157         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
9158                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
9159         else
9160                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
9161
9162         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
9163         len = sizeof(struct i40e_vsi *) * pf->num_alloc_vsi;
9164         pf->vsi = kzalloc(len, GFP_KERNEL);
9165         if (!pf->vsi) {
9166                 err = -ENOMEM;
9167                 goto err_switch_setup;
9168         }
9169
9170         err = i40e_setup_pf_switch(pf, false);
9171         if (err) {
9172                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
9173                 goto err_vsis;
9174         }
9175         /* if FDIR VSI was set up, start it now */
9176         for (i = 0; i < pf->num_alloc_vsi; i++) {
9177                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
9178                         i40e_vsi_open(pf->vsi[i]);
9179                         break;
9180                 }
9181         }
9182
9183         /* driver is only interested in link up/down and module qualification
9184          * reports from firmware
9185          */
9186         err = i40e_aq_set_phy_int_mask(&pf->hw,
9187                                        I40E_AQ_EVENT_LINK_UPDOWN |
9188                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
9189         if (err)
9190                 dev_info(&pf->pdev->dev, "set phy mask fail, aq_err %d\n", err);
9191
9192         msleep(75);
9193         err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
9194         if (err) {
9195                 dev_info(&pf->pdev->dev, "link restart failed, aq_err=%d\n",
9196                          pf->hw.aq.asq_last_status);
9197         }
9198
9199         /* The main driver is (mostly) up and happy. We need to set this state
9200          * before setting up the misc vector or we get a race and the vector
9201          * ends up disabled forever.
9202          */
9203         clear_bit(__I40E_DOWN, &pf->state);
9204
9205         /* In case of MSIX we are going to setup the misc vector right here
9206          * to handle admin queue events etc. In case of legacy and MSI
9207          * the misc functionality and queue processing is combined in
9208          * the same vector and that gets setup at open.
9209          */
9210         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
9211                 err = i40e_setup_misc_vector(pf);
9212                 if (err) {
9213                         dev_info(&pdev->dev,
9214                                  "setup of misc vector failed: %d\n", err);
9215                         goto err_vsis;
9216                 }
9217         }
9218
9219 #ifdef CONFIG_PCI_IOV
9220         /* prep for VF support */
9221         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
9222             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
9223             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
9224                 u32 val;
9225
9226                 /* disable link interrupts for VFs */
9227                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
9228                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
9229                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
9230                 i40e_flush(hw);
9231
9232                 if (pci_num_vf(pdev)) {
9233                         dev_info(&pdev->dev,
9234                                  "Active VFs found, allocating resources.\n");
9235                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
9236                         if (err)
9237                                 dev_info(&pdev->dev,
9238                                          "Error %d allocating resources for existing VFs\n",
9239                                          err);
9240                 }
9241         }
9242 #endif /* CONFIG_PCI_IOV */
9243
9244         pfs_found++;
9245
9246         i40e_dbg_pf_init(pf);
9247
9248         /* tell the firmware that we're starting */
9249         i40e_send_version(pf);
9250
9251         /* since everything's happy, start the service_task timer */
9252         mod_timer(&pf->service_timer,
9253                   round_jiffies(jiffies + pf->service_timer_period));
9254
9255 #ifdef I40E_FCOE
9256         /* create FCoE interface */
9257         i40e_fcoe_vsi_setup(pf);
9258
9259 #endif
9260         /* Get the negotiated link width and speed from PCI config space */
9261         pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA, &link_status);
9262
9263         i40e_set_pci_config_data(hw, link_status);
9264
9265         dev_info(&pdev->dev, "PCI-Express: %s %s\n",
9266                 (hw->bus.speed == i40e_bus_speed_8000 ? "Speed 8.0GT/s" :
9267                  hw->bus.speed == i40e_bus_speed_5000 ? "Speed 5.0GT/s" :
9268                  hw->bus.speed == i40e_bus_speed_2500 ? "Speed 2.5GT/s" :
9269                  "Unknown"),
9270                 (hw->bus.width == i40e_bus_width_pcie_x8 ? "Width x8" :
9271                  hw->bus.width == i40e_bus_width_pcie_x4 ? "Width x4" :
9272                  hw->bus.width == i40e_bus_width_pcie_x2 ? "Width x2" :
9273                  hw->bus.width == i40e_bus_width_pcie_x1 ? "Width x1" :
9274                  "Unknown"));
9275
9276         if (hw->bus.width < i40e_bus_width_pcie_x8 ||
9277             hw->bus.speed < i40e_bus_speed_8000) {
9278                 dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
9279                 dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
9280         }
9281
9282         /* print a string summarizing features */
9283         i40e_print_features(pf);
9284
9285         return 0;
9286
9287         /* Unwind what we've done if something failed in the setup */
9288 err_vsis:
9289         set_bit(__I40E_DOWN, &pf->state);
9290         i40e_clear_interrupt_scheme(pf);
9291         kfree(pf->vsi);
9292 err_switch_setup:
9293         i40e_reset_interrupt_capability(pf);
9294         del_timer_sync(&pf->service_timer);
9295 err_mac_addr:
9296 err_configure_lan_hmc:
9297         (void)i40e_shutdown_lan_hmc(hw);
9298 err_init_lan_hmc:
9299         kfree(pf->qp_pile);
9300         kfree(pf->irq_pile);
9301 err_sw_init:
9302 err_adminq_setup:
9303         (void)i40e_shutdown_adminq(hw);
9304 err_pf_reset:
9305         iounmap(hw->hw_addr);
9306 err_ioremap:
9307         kfree(pf);
9308 err_pf_alloc:
9309         pci_disable_pcie_error_reporting(pdev);
9310         pci_release_selected_regions(pdev,
9311                                      pci_select_bars(pdev, IORESOURCE_MEM));
9312 err_pci_reg:
9313 err_dma:
9314         pci_disable_device(pdev);
9315         return err;
9316 }
9317
9318 /**
9319  * i40e_remove - Device removal routine
9320  * @pdev: PCI device information struct
9321  *
9322  * i40e_remove is called by the PCI subsystem to alert the driver
9323  * that is should release a PCI device.  This could be caused by a
9324  * Hot-Plug event, or because the driver is going to be removed from
9325  * memory.
9326  **/
9327 static void i40e_remove(struct pci_dev *pdev)
9328 {
9329         struct i40e_pf *pf = pci_get_drvdata(pdev);
9330         i40e_status ret_code;
9331         int i;
9332
9333         i40e_dbg_pf_exit(pf);
9334
9335         i40e_ptp_stop(pf);
9336
9337         /* no more scheduling of any task */
9338         set_bit(__I40E_DOWN, &pf->state);
9339         del_timer_sync(&pf->service_timer);
9340         cancel_work_sync(&pf->service_task);
9341
9342         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
9343                 i40e_free_vfs(pf);
9344                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
9345         }
9346
9347         i40e_fdir_teardown(pf);
9348
9349         /* If there is a switch structure or any orphans, remove them.
9350          * This will leave only the PF's VSI remaining.
9351          */
9352         for (i = 0; i < I40E_MAX_VEB; i++) {
9353                 if (!pf->veb[i])
9354                         continue;
9355
9356                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
9357                     pf->veb[i]->uplink_seid == 0)
9358                         i40e_switch_branch_release(pf->veb[i]);
9359         }
9360
9361         /* Now we can shutdown the PF's VSI, just before we kill
9362          * adminq and hmc.
9363          */
9364         if (pf->vsi[pf->lan_vsi])
9365                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
9366
9367         i40e_stop_misc_vector(pf);
9368         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
9369                 synchronize_irq(pf->msix_entries[0].vector);
9370                 free_irq(pf->msix_entries[0].vector, pf);
9371         }
9372
9373         /* shutdown and destroy the HMC */
9374         if (pf->hw.hmc.hmc_obj) {
9375                 ret_code = i40e_shutdown_lan_hmc(&pf->hw);
9376                 if (ret_code)
9377                         dev_warn(&pdev->dev,
9378                                  "Failed to destroy the HMC resources: %d\n",
9379                                  ret_code);
9380         }
9381
9382         /* shutdown the adminq */
9383         ret_code = i40e_shutdown_adminq(&pf->hw);
9384         if (ret_code)
9385                 dev_warn(&pdev->dev,
9386                          "Failed to destroy the Admin Queue resources: %d\n",
9387                          ret_code);
9388
9389         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
9390         i40e_clear_interrupt_scheme(pf);
9391         for (i = 0; i < pf->num_alloc_vsi; i++) {
9392                 if (pf->vsi[i]) {
9393                         i40e_vsi_clear_rings(pf->vsi[i]);
9394                         i40e_vsi_clear(pf->vsi[i]);
9395                         pf->vsi[i] = NULL;
9396                 }
9397         }
9398
9399         for (i = 0; i < I40E_MAX_VEB; i++) {
9400                 kfree(pf->veb[i]);
9401                 pf->veb[i] = NULL;
9402         }
9403
9404         kfree(pf->qp_pile);
9405         kfree(pf->irq_pile);
9406         kfree(pf->vsi);
9407
9408         iounmap(pf->hw.hw_addr);
9409         kfree(pf);
9410         pci_release_selected_regions(pdev,
9411                                      pci_select_bars(pdev, IORESOURCE_MEM));
9412
9413         pci_disable_pcie_error_reporting(pdev);
9414         pci_disable_device(pdev);
9415 }
9416
9417 /**
9418  * i40e_pci_error_detected - warning that something funky happened in PCI land
9419  * @pdev: PCI device information struct
9420  *
9421  * Called to warn that something happened and the error handling steps
9422  * are in progress.  Allows the driver to quiesce things, be ready for
9423  * remediation.
9424  **/
9425 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
9426                                                 enum pci_channel_state error)
9427 {
9428         struct i40e_pf *pf = pci_get_drvdata(pdev);
9429
9430         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
9431
9432         /* shutdown all operations */
9433         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
9434                 rtnl_lock();
9435                 i40e_prep_for_reset(pf);
9436                 rtnl_unlock();
9437         }
9438
9439         /* Request a slot reset */
9440         return PCI_ERS_RESULT_NEED_RESET;
9441 }
9442
9443 /**
9444  * i40e_pci_error_slot_reset - a PCI slot reset just happened
9445  * @pdev: PCI device information struct
9446  *
9447  * Called to find if the driver can work with the device now that
9448  * the pci slot has been reset.  If a basic connection seems good
9449  * (registers are readable and have sane content) then return a
9450  * happy little PCI_ERS_RESULT_xxx.
9451  **/
9452 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
9453 {
9454         struct i40e_pf *pf = pci_get_drvdata(pdev);
9455         pci_ers_result_t result;
9456         int err;
9457         u32 reg;
9458
9459         dev_info(&pdev->dev, "%s\n", __func__);
9460         if (pci_enable_device_mem(pdev)) {
9461                 dev_info(&pdev->dev,
9462                          "Cannot re-enable PCI device after reset.\n");
9463                 result = PCI_ERS_RESULT_DISCONNECT;
9464         } else {
9465                 pci_set_master(pdev);
9466                 pci_restore_state(pdev);
9467                 pci_save_state(pdev);
9468                 pci_wake_from_d3(pdev, false);
9469
9470                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
9471                 if (reg == 0)
9472                         result = PCI_ERS_RESULT_RECOVERED;
9473                 else
9474                         result = PCI_ERS_RESULT_DISCONNECT;
9475         }
9476
9477         err = pci_cleanup_aer_uncorrect_error_status(pdev);
9478         if (err) {
9479                 dev_info(&pdev->dev,
9480                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
9481                          err);
9482                 /* non-fatal, continue */
9483         }
9484
9485         return result;
9486 }
9487
9488 /**
9489  * i40e_pci_error_resume - restart operations after PCI error recovery
9490  * @pdev: PCI device information struct
9491  *
9492  * Called to allow the driver to bring things back up after PCI error
9493  * and/or reset recovery has finished.
9494  **/
9495 static void i40e_pci_error_resume(struct pci_dev *pdev)
9496 {
9497         struct i40e_pf *pf = pci_get_drvdata(pdev);
9498
9499         dev_info(&pdev->dev, "%s\n", __func__);
9500         if (test_bit(__I40E_SUSPENDED, &pf->state))
9501                 return;
9502
9503         rtnl_lock();
9504         i40e_handle_reset_warning(pf);
9505         rtnl_lock();
9506 }
9507
9508 /**
9509  * i40e_shutdown - PCI callback for shutting down
9510  * @pdev: PCI device information struct
9511  **/
9512 static void i40e_shutdown(struct pci_dev *pdev)
9513 {
9514         struct i40e_pf *pf = pci_get_drvdata(pdev);
9515         struct i40e_hw *hw = &pf->hw;
9516
9517         set_bit(__I40E_SUSPENDED, &pf->state);
9518         set_bit(__I40E_DOWN, &pf->state);
9519         rtnl_lock();
9520         i40e_prep_for_reset(pf);
9521         rtnl_unlock();
9522
9523         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
9524         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
9525
9526         if (system_state == SYSTEM_POWER_OFF) {
9527                 pci_wake_from_d3(pdev, pf->wol_en);
9528                 pci_set_power_state(pdev, PCI_D3hot);
9529         }
9530 }
9531
9532 #ifdef CONFIG_PM
9533 /**
9534  * i40e_suspend - PCI callback for moving to D3
9535  * @pdev: PCI device information struct
9536  **/
9537 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
9538 {
9539         struct i40e_pf *pf = pci_get_drvdata(pdev);
9540         struct i40e_hw *hw = &pf->hw;
9541
9542         set_bit(__I40E_SUSPENDED, &pf->state);
9543         set_bit(__I40E_DOWN, &pf->state);
9544         rtnl_lock();
9545         i40e_prep_for_reset(pf);
9546         rtnl_unlock();
9547
9548         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
9549         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
9550
9551         pci_wake_from_d3(pdev, pf->wol_en);
9552         pci_set_power_state(pdev, PCI_D3hot);
9553
9554         return 0;
9555 }
9556
9557 /**
9558  * i40e_resume - PCI callback for waking up from D3
9559  * @pdev: PCI device information struct
9560  **/
9561 static int i40e_resume(struct pci_dev *pdev)
9562 {
9563         struct i40e_pf *pf = pci_get_drvdata(pdev);
9564         u32 err;
9565
9566         pci_set_power_state(pdev, PCI_D0);
9567         pci_restore_state(pdev);
9568         /* pci_restore_state() clears dev->state_saves, so
9569          * call pci_save_state() again to restore it.
9570          */
9571         pci_save_state(pdev);
9572
9573         err = pci_enable_device_mem(pdev);
9574         if (err) {
9575                 dev_err(&pdev->dev,
9576                         "%s: Cannot enable PCI device from suspend\n",
9577                         __func__);
9578                 return err;
9579         }
9580         pci_set_master(pdev);
9581
9582         /* no wakeup events while running */
9583         pci_wake_from_d3(pdev, false);
9584
9585         /* handling the reset will rebuild the device state */
9586         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
9587                 clear_bit(__I40E_DOWN, &pf->state);
9588                 rtnl_lock();
9589                 i40e_reset_and_rebuild(pf, false);
9590                 rtnl_unlock();
9591         }
9592
9593         return 0;
9594 }
9595
9596 #endif
9597 static const struct pci_error_handlers i40e_err_handler = {
9598         .error_detected = i40e_pci_error_detected,
9599         .slot_reset = i40e_pci_error_slot_reset,
9600         .resume = i40e_pci_error_resume,
9601 };
9602
9603 static struct pci_driver i40e_driver = {
9604         .name     = i40e_driver_name,
9605         .id_table = i40e_pci_tbl,
9606         .probe    = i40e_probe,
9607         .remove   = i40e_remove,
9608 #ifdef CONFIG_PM
9609         .suspend  = i40e_suspend,
9610         .resume   = i40e_resume,
9611 #endif
9612         .shutdown = i40e_shutdown,
9613         .err_handler = &i40e_err_handler,
9614         .sriov_configure = i40e_pci_sriov_configure,
9615 };
9616
9617 /**
9618  * i40e_init_module - Driver registration routine
9619  *
9620  * i40e_init_module is the first routine called when the driver is
9621  * loaded. All it does is register with the PCI subsystem.
9622  **/
9623 static int __init i40e_init_module(void)
9624 {
9625         pr_info("%s: %s - version %s\n", i40e_driver_name,
9626                 i40e_driver_string, i40e_driver_version_str);
9627         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
9628         i40e_dbg_init();
9629         return pci_register_driver(&i40e_driver);
9630 }
9631 module_init(i40e_init_module);
9632
9633 /**
9634  * i40e_exit_module - Driver exit cleanup routine
9635  *
9636  * i40e_exit_module is called just before the driver is removed
9637  * from memory.
9638  **/
9639 static void __exit i40e_exit_module(void)
9640 {
9641         pci_unregister_driver(&i40e_driver);
9642         i40e_dbg_exit();
9643 }
9644 module_exit(i40e_exit_module);