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

   1 /*******************************************************************************
   2  *
   3  * Intel Ethernet Controller XL710 Family Linux Driver
   4  * Copyright(c) 2013 - 2015 Intel Corporation.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  *
  18  * The full GNU General Public License is included in this distribution in
  19  * the file called "COPYING".
  20  *
  21  * Contact Information:
  22  * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  23  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  24  *
  25  ******************************************************************************/
  26
  27 /* Local includes */
  28 #include "i40e.h"
  29 #include "i40e_diag.h"
  30 #ifdef CONFIG_I40E_VXLAN
  31 #include <net/vxlan.h>
  32 #endif
  33
  34 const char i40e_driver_name[] = "i40e";
  35 static const char i40e_driver_string[] =
  36                         "Intel(R) Ethernet Connection XL710 Network Driver";
  37
  38 #define DRV_KERN "-k"
  39
  40 #define DRV_VERSION_MAJOR 1
  41 #define DRV_VERSION_MINOR 3
  42 #define DRV_VERSION_BUILD 9
  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         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  79         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_X722), 0},
  80         {PCI_VDEVICE(INTEL, I40E_DEV_ID_1G_BASE_T_X722), 0},
  81         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T_X722), 0},
  82         /* required last entry */
  83         {0, }
  84 };
  85 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
  86
  87 #define I40E_MAX_VF_COUNT 128
  88 static int debug = -1;
  89 module_param(debug, int, 0);
  90 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
  91
  92 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
  93 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
  94 MODULE_LICENSE("GPL");
  95 MODULE_VERSION(DRV_VERSION);
  96
  97 /**
  98  * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
  99  * @hw:   pointer to the HW structure
 100  * @mem:  ptr to mem struct to fill out
 101  * @size: size of memory requested
 102  * @alignment: what to align the allocation to
 103  **/
 104 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
 105                             u64 size, u32 alignment)
 106 {
 107         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 108
 109         mem->size = ALIGN(size, alignment);
 110         mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
 111                                       &mem->pa, GFP_KERNEL);
 112         if (!mem->va)
 113                 return -ENOMEM;
 114
 115         return 0;
 116 }
 117
 118 /**
 119  * i40e_free_dma_mem_d - OS specific memory free for shared code
 120  * @hw:   pointer to the HW structure
 121  * @mem:  ptr to mem struct to free
 122  **/
 123 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
 124 {
 125         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 126
 127         dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
 128         mem->va = NULL;
 129         mem->pa = 0;
 130         mem->size = 0;
 131
 132         return 0;
 133 }
 134
 135 /**
 136  * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 137  * @hw:   pointer to the HW structure
 138  * @mem:  ptr to mem struct to fill out
 139  * @size: size of memory requested
 140  **/
 141 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
 142                              u32 size)
 143 {
 144         mem->size = size;
 145         mem->va = kzalloc(size, GFP_KERNEL);
 146
 147         if (!mem->va)
 148                 return -ENOMEM;
 149
 150         return 0;
 151 }
 152
 153 /**
 154  * i40e_free_virt_mem_d - OS specific memory free for shared code
 155  * @hw:   pointer to the HW structure
 156  * @mem:  ptr to mem struct to free
 157  **/
 158 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
 159 {
 160         /* it's ok to kfree a NULL pointer */
 161         kfree(mem->va);
 162         mem->va = NULL;
 163         mem->size = 0;
 164
 165         return 0;
 166 }
 167
 168 /**
 169  * i40e_get_lump - find a lump of free generic resource
 170  * @pf: board private structure
 171  * @pile: the pile of resource to search
 172  * @needed: the number of items needed
 173  * @id: an owner id to stick on the items assigned
 174  *
 175  * Returns the base item index of the lump, or negative for error
 176  *
 177  * The search_hint trick and lack of advanced fit-finding only work
 178  * because we're highly likely to have all the same size lump requests.
 179  * Linear search time and any fragmentation should be minimal.
 180  **/
 181 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 182                          u16 needed, u16 id)
 183 {
 184         int ret = -ENOMEM;
 185         int i, j;
 186
 187         if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
 188                 dev_info(&pf->pdev->dev,
 189                          "param err: pile=%p needed=%d id=0x%04x\n",
 190                          pile, needed, id);
 191                 return -EINVAL;
 192         }
 193
 194         /* start the linear search with an imperfect hint */
 195         i = pile->search_hint;
 196         while (i < pile->num_entries) {
 197                 /* skip already allocated entries */
 198                 if (pile->list[i] & I40E_PILE_VALID_BIT) {
 199                         i++;
 200                         continue;
 201                 }
 202
 203                 /* do we have enough in this lump? */
 204                 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
 205                         if (pile->list[i+j] & I40E_PILE_VALID_BIT)
 206                                 break;
 207                 }
 208
 209                 if (j == needed) {
 210                         /* there was enough, so assign it to the requestor */
 211                         for (j = 0; j < needed; j++)
 212                                 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 213                         ret = i;
 214                         pile->search_hint = i + j;
 215                         break;
 216                 } else {
 217                         /* not enough, so skip over it and continue looking */
 218                         i += j;
 219                 }
 220         }
 221
 222         return ret;
 223 }
 224
 225 /**
 226  * i40e_put_lump - return a lump of generic resource
 227  * @pile: the pile of resource to search
 228  * @index: the base item index
 229  * @id: the owner id of the items assigned
 230  *
 231  * Returns the count of items in the lump
 232  **/
 233 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
 234 {
 235         int valid_id = (id | I40E_PILE_VALID_BIT);
 236         int count = 0;
 237         int i;
 238
 239         if (!pile || index >= pile->num_entries)
 240                 return -EINVAL;
 241
 242         for (i = index;
 243              i < pile->num_entries && pile->list[i] == valid_id;
 244              i++) {
 245                 pile->list[i] = 0;
 246                 count++;
 247         }
 248
 249         if (count && index < pile->search_hint)
 250                 pile->search_hint = index;
 251
 252         return count;
 253 }
 254
 255 /**
 256  * i40e_find_vsi_from_id - searches for the vsi with the given id
 257  * @pf - the pf structure to search for the vsi
 258  * @id - id of the vsi it is searching for
 259  **/
 260 struct i40e_vsi *i40e_find_vsi_from_id(struct i40e_pf *pf, u16 id)
 261 {
 262         int i;
 263
 264         for (i = 0; i < pf->num_alloc_vsi; i++)
 265                 if (pf->vsi[i] && (pf->vsi[i]->id == id))
 266                         return pf->vsi[i];
 267
 268         return NULL;
 269 }
 270
 271 /**
 272  * i40e_service_event_schedule - Schedule the service task to wake up
 273  * @pf: board private structure
 274  *
 275  * If not already scheduled, this puts the task into the work queue
 276  **/
 277 static void i40e_service_event_schedule(struct i40e_pf *pf)
 278 {
 279         if (!test_bit(__I40E_DOWN, &pf->state) &&
 280             !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state) &&
 281             !test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
 282                 schedule_work(&pf->service_task);
 283 }
 284
 285 /**
 286  * i40e_tx_timeout - Respond to a Tx Hang
 287  * @netdev: network interface device structure
 288  *
 289  * If any port has noticed a Tx timeout, it is likely that the whole
 290  * device is munged, not just the one netdev port, so go for the full
 291  * reset.
 292  **/
 293 #ifdef I40E_FCOE
 294 void i40e_tx_timeout(struct net_device *netdev)
 295 #else
 296 static void i40e_tx_timeout(struct net_device *netdev)
 297 #endif
 298 {
 299         struct i40e_netdev_priv *np = netdev_priv(netdev);
 300         struct i40e_vsi *vsi = np->vsi;
 301         struct i40e_pf *pf = vsi->back;
 302
 303         pf->tx_timeout_count++;
 304
 305         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 306                 pf->tx_timeout_recovery_level = 1;
 307         pf->tx_timeout_last_recovery = jiffies;
 308         netdev_info(netdev, "tx_timeout recovery level %d\n",
 309                     pf->tx_timeout_recovery_level);
 310
 311         switch (pf->tx_timeout_recovery_level) {
 312         case 0:
 313                 /* disable and re-enable queues for the VSI */
 314                 if (in_interrupt()) {
 315                         set_bit(__I40E_REINIT_REQUESTED, &pf->state);
 316                         set_bit(__I40E_REINIT_REQUESTED, &vsi->state);
 317                 } else {
 318                         i40e_vsi_reinit_locked(vsi);
 319                 }
 320                 break;
 321         case 1:
 322                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
 323                 break;
 324         case 2:
 325                 set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
 326                 break;
 327         case 3:
 328                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
 329                 break;
 330         default:
 331                 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
 332                 set_bit(__I40E_DOWN_REQUESTED, &pf->state);
 333                 set_bit(__I40E_DOWN_REQUESTED, &vsi->state);
 334                 break;
 335         }
 336         i40e_service_event_schedule(pf);
 337         pf->tx_timeout_recovery_level++;
 338 }
 339
 340 /**
 341  * i40e_release_rx_desc - Store the new tail and head values
 342  * @rx_ring: ring to bump
 343  * @val: new head index
 344  **/
 345 static inline void i40e_release_rx_desc(struct i40e_ring *rx_ring, u32 val)
 346 {
 347         rx_ring->next_to_use = val;
 348
 349         /* Force memory writes to complete before letting h/w
 350          * know there are new descriptors to fetch.  (Only
 351          * applicable for weak-ordered memory model archs,
 352          * such as IA-64).
 353          */
 354         wmb();
 355         writel(val, rx_ring->tail);
 356 }
 357
 358 /**
 359  * i40e_get_vsi_stats_struct - Get System Network Statistics
 360  * @vsi: the VSI we care about
 361  *
 362  * Returns the address of the device statistics structure.
 363  * The statistics are actually updated from the service task.
 364  **/
 365 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 366 {
 367         return &vsi->net_stats;
 368 }
 369
 370 /**
 371  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 372  * @netdev: network interface device structure
 373  *
 374  * Returns the address of the device statistics structure.
 375  * The statistics are actually updated from the service task.
 376  **/
 377 #ifdef I40E_FCOE
 378 struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 379                                              struct net_device *netdev,
 380                                              struct rtnl_link_stats64 *stats)
 381 #else
 382 static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 383                                              struct net_device *netdev,
 384                                              struct rtnl_link_stats64 *stats)
 385 #endif
 386 {
 387         struct i40e_netdev_priv *np = netdev_priv(netdev);
 388         struct i40e_ring *tx_ring, *rx_ring;
 389         struct i40e_vsi *vsi = np->vsi;
 390         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 391         int i;
 392
 393         if (test_bit(__I40E_DOWN, &vsi->state))
 394                 return stats;
 395
 396         if (!vsi->tx_rings)
 397                 return stats;
 398
 399         rcu_read_lock();
 400         for (i = 0; i < vsi->num_queue_pairs; i++) {
 401                 u64 bytes, packets;
 402                 unsigned int start;
 403
 404                 tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
 405                 if (!tx_ring)
 406                         continue;
 407
 408                 do {
 409                         start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
 410                         packets = tx_ring->stats.packets;
 411                         bytes   = tx_ring->stats.bytes;
 412                 } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
 413
 414                 stats->tx_packets += packets;
 415                 stats->tx_bytes   += bytes;
 416                 rx_ring = &tx_ring[1];
 417
 418                 do {
 419                         start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
 420                         packets = rx_ring->stats.packets;
 421                         bytes   = rx_ring->stats.bytes;
 422                 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
 423
 424                 stats->rx_packets += packets;
 425                 stats->rx_bytes   += bytes;
 426         }
 427         rcu_read_unlock();
 428
 429         /* following stats updated by i40e_watchdog_subtask() */
 430         stats->multicast        = vsi_stats->multicast;
 431         stats->tx_errors        = vsi_stats->tx_errors;
 432         stats->tx_dropped       = vsi_stats->tx_dropped;
 433         stats->rx_errors        = vsi_stats->rx_errors;
 434         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 435         stats->rx_length_errors = vsi_stats->rx_length_errors;
 436
 437         return stats;
 438 }
 439
 440 /**
 441  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 442  * @vsi: the VSI to have its stats reset
 443  **/
 444 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 445 {
 446         struct rtnl_link_stats64 *ns;
 447         int i;
 448
 449         if (!vsi)
 450                 return;
 451
 452         ns = i40e_get_vsi_stats_struct(vsi);
 453         memset(ns, 0, sizeof(*ns));
 454         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 455         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 456         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 457         if (vsi->rx_rings && vsi->rx_rings[0]) {
 458                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 459                         memset(&vsi->rx_rings[i]->stats, 0 ,
 460                                sizeof(vsi->rx_rings[i]->stats));
 461                         memset(&vsi->rx_rings[i]->rx_stats, 0 ,
 462                                sizeof(vsi->rx_rings[i]->rx_stats));
 463                         memset(&vsi->tx_rings[i]->stats, 0 ,
 464                                sizeof(vsi->tx_rings[i]->stats));
 465                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 466                                sizeof(vsi->tx_rings[i]->tx_stats));
 467                 }
 468         }
 469         vsi->stat_offsets_loaded = false;
 470 }
 471
 472 /**
 473  * i40e_pf_reset_stats - Reset all of the stats for the given PF
 474  * @pf: the PF to be reset
 475  **/
 476 void i40e_pf_reset_stats(struct i40e_pf *pf)
 477 {
 478         int i;
 479
 480         memset(&pf->stats, 0, sizeof(pf->stats));
 481         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 482         pf->stat_offsets_loaded = false;
 483
 484         for (i = 0; i < I40E_MAX_VEB; i++) {
 485                 if (pf->veb[i]) {
 486                         memset(&pf->veb[i]->stats, 0,
 487                                sizeof(pf->veb[i]->stats));
 488                         memset(&pf->veb[i]->stats_offsets, 0,
 489                                sizeof(pf->veb[i]->stats_offsets));
 490                         pf->veb[i]->stat_offsets_loaded = false;
 491                 }
 492         }
 493 }
 494
 495 /**
 496  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 497  * @hw: ptr to the hardware info
 498  * @hireg: the high 32 bit reg to read
 499  * @loreg: the low 32 bit reg to read
 500  * @offset_loaded: has the initial offset been loaded yet
 501  * @offset: ptr to current offset value
 502  * @stat: ptr to the stat
 503  *
 504  * Since the device stats are not reset at PFReset, they likely will not
 505  * be zeroed when the driver starts.  We'll save the first values read
 506  * and use them as offsets to be subtracted from the raw values in order
 507  * to report stats that count from zero.  In the process, we also manage
 508  * the potential roll-over.
 509  **/
 510 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 511                                bool offset_loaded, u64 *offset, u64 *stat)
 512 {
 513         u64 new_data;
 514
 515         if (hw->device_id == I40E_DEV_ID_QEMU) {
 516                 new_data = rd32(hw, loreg);
 517                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 518         } else {
 519                 new_data = rd64(hw, loreg);
 520         }
 521         if (!offset_loaded)
 522                 *offset = new_data;
 523         if (likely(new_data >= *offset))
 524                 *stat = new_data - *offset;
 525         else
 526                 *stat = (new_data + BIT_ULL(48)) - *offset;
 527         *stat &= 0xFFFFFFFFFFFFULL;
 528 }
 529
 530 /**
 531  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 532  * @hw: ptr to the hardware info
 533  * @reg: the hw reg to read
 534  * @offset_loaded: has the initial offset been loaded yet
 535  * @offset: ptr to current offset value
 536  * @stat: ptr to the stat
 537  **/
 538 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 539                                bool offset_loaded, u64 *offset, u64 *stat)
 540 {
 541         u32 new_data;
 542
 543         new_data = rd32(hw, reg);
 544         if (!offset_loaded)
 545                 *offset = new_data;
 546         if (likely(new_data >= *offset))
 547                 *stat = (u32)(new_data - *offset);
 548         else
 549                 *stat = (u32)((new_data + BIT_ULL(32)) - *offset);
 550 }
 551
 552 /**
 553  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 554  * @vsi: the VSI to be updated
 555  **/
 556 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 557 {
 558         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 559         struct i40e_pf *pf = vsi->back;
 560         struct i40e_hw *hw = &pf->hw;
 561         struct i40e_eth_stats *oes;
 562         struct i40e_eth_stats *es;     /* device's eth stats */
 563
 564         es = &vsi->eth_stats;
 565         oes = &vsi->eth_stats_offsets;
 566
 567         /* Gather up the stats that the hw collects */
 568         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 569                            vsi->stat_offsets_loaded,
 570                            &oes->tx_errors, &es->tx_errors);
 571         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 572                            vsi->stat_offsets_loaded,
 573                            &oes->rx_discards, &es->rx_discards);
 574         i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
 575                            vsi->stat_offsets_loaded,
 576                            &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
 577         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 578                            vsi->stat_offsets_loaded,
 579                            &oes->tx_errors, &es->tx_errors);
 580
 581         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 582                            I40E_GLV_GORCL(stat_idx),
 583                            vsi->stat_offsets_loaded,
 584                            &oes->rx_bytes, &es->rx_bytes);
 585         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 586                            I40E_GLV_UPRCL(stat_idx),
 587                            vsi->stat_offsets_loaded,
 588                            &oes->rx_unicast, &es->rx_unicast);
 589         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 590                            I40E_GLV_MPRCL(stat_idx),
 591                            vsi->stat_offsets_loaded,
 592                            &oes->rx_multicast, &es->rx_multicast);
 593         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 594                            I40E_GLV_BPRCL(stat_idx),
 595                            vsi->stat_offsets_loaded,
 596                            &oes->rx_broadcast, &es->rx_broadcast);
 597
 598         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 599                            I40E_GLV_GOTCL(stat_idx),
 600                            vsi->stat_offsets_loaded,
 601                            &oes->tx_bytes, &es->tx_bytes);
 602         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 603                            I40E_GLV_UPTCL(stat_idx),
 604                            vsi->stat_offsets_loaded,
 605                            &oes->tx_unicast, &es->tx_unicast);
 606         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 607                            I40E_GLV_MPTCL(stat_idx),
 608                            vsi->stat_offsets_loaded,
 609                            &oes->tx_multicast, &es->tx_multicast);
 610         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 611                            I40E_GLV_BPTCL(stat_idx),
 612                            vsi->stat_offsets_loaded,
 613                            &oes->tx_broadcast, &es->tx_broadcast);
 614         vsi->stat_offsets_loaded = true;
 615 }
 616
 617 /**
 618  * i40e_update_veb_stats - Update Switch component statistics
 619  * @veb: the VEB being updated
 620  **/
 621 static void i40e_update_veb_stats(struct i40e_veb *veb)
 622 {
 623         struct i40e_pf *pf = veb->pf;
 624         struct i40e_hw *hw = &pf->hw;
 625         struct i40e_eth_stats *oes;
 626         struct i40e_eth_stats *es;     /* device's eth stats */
 627         struct i40e_veb_tc_stats *veb_oes;
 628         struct i40e_veb_tc_stats *veb_es;
 629         int i, idx = 0;
 630
 631         idx = veb->stats_idx;
 632         es = &veb->stats;
 633         oes = &veb->stats_offsets;
 634         veb_es = &veb->tc_stats;
 635         veb_oes = &veb->tc_stats_offsets;
 636
 637         /* Gather up the stats that the hw collects */
 638         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 639                            veb->stat_offsets_loaded,
 640                            &oes->tx_discards, &es->tx_discards);
 641         if (hw->revision_id > 0)
 642                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 643                                    veb->stat_offsets_loaded,
 644                                    &oes->rx_unknown_protocol,
 645                                    &es->rx_unknown_protocol);
 646         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 647                            veb->stat_offsets_loaded,
 648                            &oes->rx_bytes, &es->rx_bytes);
 649         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 650                            veb->stat_offsets_loaded,
 651                            &oes->rx_unicast, &es->rx_unicast);
 652         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 653                            veb->stat_offsets_loaded,
 654                            &oes->rx_multicast, &es->rx_multicast);
 655         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 656                            veb->stat_offsets_loaded,
 657                            &oes->rx_broadcast, &es->rx_broadcast);
 658
 659         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 660                            veb->stat_offsets_loaded,
 661                            &oes->tx_bytes, &es->tx_bytes);
 662         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 663                            veb->stat_offsets_loaded,
 664                            &oes->tx_unicast, &es->tx_unicast);
 665         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 666                            veb->stat_offsets_loaded,
 667                            &oes->tx_multicast, &es->tx_multicast);
 668         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 669                            veb->stat_offsets_loaded,
 670                            &oes->tx_broadcast, &es->tx_broadcast);
 671         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
 672                 i40e_stat_update48(hw, I40E_GLVEBTC_RPCH(i, idx),
 673                                    I40E_GLVEBTC_RPCL(i, idx),
 674                                    veb->stat_offsets_loaded,
 675                                    &veb_oes->tc_rx_packets[i],
 676                                    &veb_es->tc_rx_packets[i]);
 677                 i40e_stat_update48(hw, I40E_GLVEBTC_RBCH(i, idx),
 678                                    I40E_GLVEBTC_RBCL(i, idx),
 679                                    veb->stat_offsets_loaded,
 680                                    &veb_oes->tc_rx_bytes[i],
 681                                    &veb_es->tc_rx_bytes[i]);
 682                 i40e_stat_update48(hw, I40E_GLVEBTC_TPCH(i, idx),
 683                                    I40E_GLVEBTC_TPCL(i, idx),
 684                                    veb->stat_offsets_loaded,
 685                                    &veb_oes->tc_tx_packets[i],
 686                                    &veb_es->tc_tx_packets[i]);
 687                 i40e_stat_update48(hw, I40E_GLVEBTC_TBCH(i, idx),
 688                                    I40E_GLVEBTC_TBCL(i, idx),
 689                                    veb->stat_offsets_loaded,
 690                                    &veb_oes->tc_tx_bytes[i],
 691                                    &veb_es->tc_tx_bytes[i]);
 692         }
 693         veb->stat_offsets_loaded = true;
 694 }
 695
 696 #ifdef I40E_FCOE
 697 /**
 698  * i40e_update_fcoe_stats - Update FCoE-specific ethernet statistics counters.
 699  * @vsi: the VSI that is capable of doing FCoE
 700  **/
 701 static void i40e_update_fcoe_stats(struct i40e_vsi *vsi)
 702 {
 703         struct i40e_pf *pf = vsi->back;
 704         struct i40e_hw *hw = &pf->hw;
 705         struct i40e_fcoe_stats *ofs;
 706         struct i40e_fcoe_stats *fs;     /* device's eth stats */
 707         int idx;
 708
 709         if (vsi->type != I40E_VSI_FCOE)
 710                 return;
 711
 712         idx = (pf->pf_seid - I40E_BASE_PF_SEID) + I40E_FCOE_PF_STAT_OFFSET;
 713         fs = &vsi->fcoe_stats;
 714         ofs = &vsi->fcoe_stats_offsets;
 715
 716         i40e_stat_update32(hw, I40E_GL_FCOEPRC(idx),
 717                            vsi->fcoe_stat_offsets_loaded,
 718                            &ofs->rx_fcoe_packets, &fs->rx_fcoe_packets);
 719         i40e_stat_update48(hw, I40E_GL_FCOEDWRCH(idx), I40E_GL_FCOEDWRCL(idx),
 720                            vsi->fcoe_stat_offsets_loaded,
 721                            &ofs->rx_fcoe_dwords, &fs->rx_fcoe_dwords);
 722         i40e_stat_update32(hw, I40E_GL_FCOERPDC(idx),
 723                            vsi->fcoe_stat_offsets_loaded,
 724                            &ofs->rx_fcoe_dropped, &fs->rx_fcoe_dropped);
 725         i40e_stat_update32(hw, I40E_GL_FCOEPTC(idx),
 726                            vsi->fcoe_stat_offsets_loaded,
 727                            &ofs->tx_fcoe_packets, &fs->tx_fcoe_packets);
 728         i40e_stat_update48(hw, I40E_GL_FCOEDWTCH(idx), I40E_GL_FCOEDWTCL(idx),
 729                            vsi->fcoe_stat_offsets_loaded,
 730                            &ofs->tx_fcoe_dwords, &fs->tx_fcoe_dwords);
 731         i40e_stat_update32(hw, I40E_GL_FCOECRC(idx),
 732                            vsi->fcoe_stat_offsets_loaded,
 733                            &ofs->fcoe_bad_fccrc, &fs->fcoe_bad_fccrc);
 734         i40e_stat_update32(hw, I40E_GL_FCOELAST(idx),
 735                            vsi->fcoe_stat_offsets_loaded,
 736                            &ofs->fcoe_last_error, &fs->fcoe_last_error);
 737         i40e_stat_update32(hw, I40E_GL_FCOEDDPC(idx),
 738                            vsi->fcoe_stat_offsets_loaded,
 739                            &ofs->fcoe_ddp_count, &fs->fcoe_ddp_count);
 740
 741         vsi->fcoe_stat_offsets_loaded = true;
 742 }
 743
 744 #endif
 745 /**
 746  * i40e_update_link_xoff_rx - Update XOFF received in link flow control mode
 747  * @pf: the corresponding PF
 748  *
 749  * Update the Rx XOFF counter (PAUSE frames) in link flow control mode
 750  **/
 751 static void i40e_update_link_xoff_rx(struct i40e_pf *pf)
 752 {
 753         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 754         struct i40e_hw_port_stats *nsd = &pf->stats;
 755         struct i40e_hw *hw = &pf->hw;
 756         u64 xoff = 0;
 757         u16 i, v;
 758
 759         if ((hw->fc.current_mode != I40E_FC_FULL) &&
 760             (hw->fc.current_mode != I40E_FC_RX_PAUSE))
 761                 return;
 762
 763         xoff = nsd->link_xoff_rx;
 764         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
 765                            pf->stat_offsets_loaded,
 766                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
 767
 768         /* No new LFC xoff rx */
 769         if (!(nsd->link_xoff_rx - xoff))
 770                 return;
 771
 772         /* Clear the __I40E_HANG_CHECK_ARMED bit for all Tx rings */
 773         for (v = 0; v < pf->num_alloc_vsi; v++) {
 774                 struct i40e_vsi *vsi = pf->vsi[v];
 775
 776                 if (!vsi || !vsi->tx_rings[0])
 777                         continue;
 778
 779                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 780                         struct i40e_ring *ring = vsi->tx_rings[i];
 781                         clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
 782                 }
 783         }
 784 }
 785
 786 /**
 787  * i40e_update_prio_xoff_rx - Update XOFF received in PFC mode
 788  * @pf: the corresponding PF
 789  *
 790  * Update the Rx XOFF counter (PAUSE frames) in PFC mode
 791  **/
 792 static void i40e_update_prio_xoff_rx(struct i40e_pf *pf)
 793 {
 794         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 795         struct i40e_hw_port_stats *nsd = &pf->stats;
 796         bool xoff[I40E_MAX_TRAFFIC_CLASS] = {false};
 797         struct i40e_dcbx_config *dcb_cfg;
 798         struct i40e_hw *hw = &pf->hw;
 799         u16 i, v;
 800         u8 tc;
 801
 802         dcb_cfg = &hw->local_dcbx_config;
 803
 804         /* Collect Link XOFF stats when PFC is disabled */
 805         if (!dcb_cfg->pfc.pfcenable) {
 806                 i40e_update_link_xoff_rx(pf);
 807                 return;
 808         }
 809
 810         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
 811                 u64 prio_xoff = nsd->priority_xoff_rx[i];
 812                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 813                                    pf->stat_offsets_loaded,
 814                                    &osd->priority_xoff_rx[i],
 815                                    &nsd->priority_xoff_rx[i]);
 816
 817                 /* No new PFC xoff rx */
 818                 if (!(nsd->priority_xoff_rx[i] - prio_xoff))
 819                         continue;
 820                 /* Get the TC for given priority */
 821                 tc = dcb_cfg->etscfg.prioritytable[i];
 822                 xoff[tc] = true;
 823         }
 824
 825         /* Clear the __I40E_HANG_CHECK_ARMED bit for Tx rings */
 826         for (v = 0; v < pf->num_alloc_vsi; v++) {
 827                 struct i40e_vsi *vsi = pf->vsi[v];
 828
 829                 if (!vsi || !vsi->tx_rings[0])
 830                         continue;
 831
 832                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 833                         struct i40e_ring *ring = vsi->tx_rings[i];
 834
 835                         tc = ring->dcb_tc;
 836                         if (xoff[tc])
 837                                 clear_bit(__I40E_HANG_CHECK_ARMED,
 838                                           &ring->state);
 839                 }
 840         }
 841 }
 842
 843 /**
 844  * i40e_update_vsi_stats - Update the vsi statistics counters.
 845  * @vsi: the VSI to be updated
 846  *
 847  * There are a few instances where we store the same stat in a
 848  * couple of different structs.  This is partly because we have
 849  * the netdev stats that need to be filled out, which is slightly
 850  * different from the "eth_stats" defined by the chip and used in
 851  * VF communications.  We sort it out here.
 852  **/
 853 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 854 {
 855         struct i40e_pf *pf = vsi->back;
 856         struct rtnl_link_stats64 *ons;
 857         struct rtnl_link_stats64 *ns;   /* netdev stats */
 858         struct i40e_eth_stats *oes;
 859         struct i40e_eth_stats *es;     /* device's eth stats */
 860         u32 tx_restart, tx_busy;
 861         struct i40e_ring *p;
 862         u32 rx_page, rx_buf;
 863         u64 bytes, packets;
 864         unsigned int start;
 865         u64 rx_p, rx_b;
 866         u64 tx_p, tx_b;
 867         u16 q;
 868
 869         if (test_bit(__I40E_DOWN, &vsi->state) ||
 870             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 871                 return;
 872
 873         ns = i40e_get_vsi_stats_struct(vsi);
 874         ons = &vsi->net_stats_offsets;
 875         es = &vsi->eth_stats;
 876         oes = &vsi->eth_stats_offsets;
 877
 878         /* Gather up the netdev and vsi stats that the driver collects
 879          * on the fly during packet processing
 880          */
 881         rx_b = rx_p = 0;
 882         tx_b = tx_p = 0;
 883         tx_restart = tx_busy = 0;
 884         rx_page = 0;
 885         rx_buf = 0;
 886         rcu_read_lock();
 887         for (q = 0; q < vsi->num_queue_pairs; q++) {
 888                 /* locate Tx ring */
 889                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 890
 891                 do {
 892                         start = u64_stats_fetch_begin_irq(&p->syncp);
 893                         packets = p->stats.packets;
 894                         bytes = p->stats.bytes;
 895                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 896                 tx_b += bytes;
 897                 tx_p += packets;
 898                 tx_restart += p->tx_stats.restart_queue;
 899                 tx_busy += p->tx_stats.tx_busy;
 900
 901                 /* Rx queue is part of the same block as Tx queue */
 902                 p = &p[1];
 903                 do {
 904                         start = u64_stats_fetch_begin_irq(&p->syncp);
 905                         packets = p->stats.packets;
 906                         bytes = p->stats.bytes;
 907                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 908                 rx_b += bytes;
 909                 rx_p += packets;
 910                 rx_buf += p->rx_stats.alloc_buff_failed;
 911                 rx_page += p->rx_stats.alloc_page_failed;
 912         }
 913         rcu_read_unlock();
 914         vsi->tx_restart = tx_restart;
 915         vsi->tx_busy = tx_busy;
 916         vsi->rx_page_failed = rx_page;
 917         vsi->rx_buf_failed = rx_buf;
 918
 919         ns->rx_packets = rx_p;
 920         ns->rx_bytes = rx_b;
 921         ns->tx_packets = tx_p;
 922         ns->tx_bytes = tx_b;
 923
 924         /* update netdev stats from eth stats */
 925         i40e_update_eth_stats(vsi);
 926         ons->tx_errors = oes->tx_errors;
 927         ns->tx_errors = es->tx_errors;
 928         ons->multicast = oes->rx_multicast;
 929         ns->multicast = es->rx_multicast;
 930         ons->rx_dropped = oes->rx_discards;
 931         ns->rx_dropped = es->rx_discards;
 932         ons->tx_dropped = oes->tx_discards;
 933         ns->tx_dropped = es->tx_discards;
 934
 935         /* pull in a couple PF stats if this is the main vsi */
 936         if (vsi == pf->vsi[pf->lan_vsi]) {
 937                 ns->rx_crc_errors = pf->stats.crc_errors;
 938                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 939                 ns->rx_length_errors = pf->stats.rx_length_errors;
 940         }
 941 }
 942
 943 /**
 944  * i40e_update_pf_stats - Update the PF statistics counters.
 945  * @pf: the PF to be updated
 946  **/
 947 static void i40e_update_pf_stats(struct i40e_pf *pf)
 948 {
 949         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 950         struct i40e_hw_port_stats *nsd = &pf->stats;
 951         struct i40e_hw *hw = &pf->hw;
 952         u32 val;
 953         int i;
 954
 955         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 956                            I40E_GLPRT_GORCL(hw->port),
 957                            pf->stat_offsets_loaded,
 958                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 959         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 960                            I40E_GLPRT_GOTCL(hw->port),
 961                            pf->stat_offsets_loaded,
 962                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 963         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 964                            pf->stat_offsets_loaded,
 965                            &osd->eth.rx_discards,
 966                            &nsd->eth.rx_discards);
 967         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 968                            I40E_GLPRT_UPRCL(hw->port),
 969                            pf->stat_offsets_loaded,
 970                            &osd->eth.rx_unicast,
 971                            &nsd->eth.rx_unicast);
 972         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 973                            I40E_GLPRT_MPRCL(hw->port),
 974                            pf->stat_offsets_loaded,
 975                            &osd->eth.rx_multicast,
 976                            &nsd->eth.rx_multicast);
 977         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
 978                            I40E_GLPRT_BPRCL(hw->port),
 979                            pf->stat_offsets_loaded,
 980                            &osd->eth.rx_broadcast,
 981                            &nsd->eth.rx_broadcast);
 982         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
 983                            I40E_GLPRT_UPTCL(hw->port),
 984                            pf->stat_offsets_loaded,
 985                            &osd->eth.tx_unicast,
 986                            &nsd->eth.tx_unicast);
 987         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
 988                            I40E_GLPRT_MPTCL(hw->port),
 989                            pf->stat_offsets_loaded,
 990                            &osd->eth.tx_multicast,
 991                            &nsd->eth.tx_multicast);
 992         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
 993                            I40E_GLPRT_BPTCL(hw->port),
 994                            pf->stat_offsets_loaded,
 995                            &osd->eth.tx_broadcast,
 996                            &nsd->eth.tx_broadcast);
 997
 998         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
 999                            pf->stat_offsets_loaded,
1000                            &osd->tx_dropped_link_down,
1001                            &nsd->tx_dropped_link_down);
1002
1003         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
1004                            pf->stat_offsets_loaded,
1005                            &osd->crc_errors, &nsd->crc_errors);
1006
1007         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
1008                            pf->stat_offsets_loaded,
1009                            &osd->illegal_bytes, &nsd->illegal_bytes);
1010
1011         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
1012                            pf->stat_offsets_loaded,
1013                            &osd->mac_local_faults,
1014                            &nsd->mac_local_faults);
1015         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
1016                            pf->stat_offsets_loaded,
1017                            &osd->mac_remote_faults,
1018                            &nsd->mac_remote_faults);
1019
1020         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
1021                            pf->stat_offsets_loaded,
1022                            &osd->rx_length_errors,
1023                            &nsd->rx_length_errors);
1024
1025         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
1026                            pf->stat_offsets_loaded,
1027                            &osd->link_xon_rx, &nsd->link_xon_rx);
1028         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
1029                            pf->stat_offsets_loaded,
1030                            &osd->link_xon_tx, &nsd->link_xon_tx);
1031         i40e_update_prio_xoff_rx(pf);  /* handles I40E_GLPRT_LXOFFRXC */
1032         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
1033                            pf->stat_offsets_loaded,
1034                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
1035
1036         for (i = 0; i < 8; i++) {
1037                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
1038                                    pf->stat_offsets_loaded,
1039                                    &osd->priority_xon_rx[i],
1040                                    &nsd->priority_xon_rx[i]);
1041                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
1042                                    pf->stat_offsets_loaded,
1043                                    &osd->priority_xon_tx[i],
1044                                    &nsd->priority_xon_tx[i]);
1045                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
1046                                    pf->stat_offsets_loaded,
1047                                    &osd->priority_xoff_tx[i],
1048                                    &nsd->priority_xoff_tx[i]);
1049                 i40e_stat_update32(hw,
1050                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
1051                                    pf->stat_offsets_loaded,
1052                                    &osd->priority_xon_2_xoff[i],
1053                                    &nsd->priority_xon_2_xoff[i]);
1054         }
1055
1056         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
1057                            I40E_GLPRT_PRC64L(hw->port),
1058                            pf->stat_offsets_loaded,
1059                            &osd->rx_size_64, &nsd->rx_size_64);
1060         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
1061                            I40E_GLPRT_PRC127L(hw->port),
1062                            pf->stat_offsets_loaded,
1063                            &osd->rx_size_127, &nsd->rx_size_127);
1064         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
1065                            I40E_GLPRT_PRC255L(hw->port),
1066                            pf->stat_offsets_loaded,
1067                            &osd->rx_size_255, &nsd->rx_size_255);
1068         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
1069                            I40E_GLPRT_PRC511L(hw->port),
1070                            pf->stat_offsets_loaded,
1071                            &osd->rx_size_511, &nsd->rx_size_511);
1072         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
1073                            I40E_GLPRT_PRC1023L(hw->port),
1074                            pf->stat_offsets_loaded,
1075                            &osd->rx_size_1023, &nsd->rx_size_1023);
1076         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
1077                            I40E_GLPRT_PRC1522L(hw->port),
1078                            pf->stat_offsets_loaded,
1079                            &osd->rx_size_1522, &nsd->rx_size_1522);
1080         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
1081                            I40E_GLPRT_PRC9522L(hw->port),
1082                            pf->stat_offsets_loaded,
1083                            &osd->rx_size_big, &nsd->rx_size_big);
1084
1085         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
1086                            I40E_GLPRT_PTC64L(hw->port),
1087                            pf->stat_offsets_loaded,
1088                            &osd->tx_size_64, &nsd->tx_size_64);
1089         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
1090                            I40E_GLPRT_PTC127L(hw->port),
1091                            pf->stat_offsets_loaded,
1092                            &osd->tx_size_127, &nsd->tx_size_127);
1093         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
1094                            I40E_GLPRT_PTC255L(hw->port),
1095                            pf->stat_offsets_loaded,
1096                            &osd->tx_size_255, &nsd->tx_size_255);
1097         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
1098                            I40E_GLPRT_PTC511L(hw->port),
1099                            pf->stat_offsets_loaded,
1100                            &osd->tx_size_511, &nsd->tx_size_511);
1101         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1102                            I40E_GLPRT_PTC1023L(hw->port),
1103                            pf->stat_offsets_loaded,
1104                            &osd->tx_size_1023, &nsd->tx_size_1023);
1105         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1106                            I40E_GLPRT_PTC1522L(hw->port),
1107                            pf->stat_offsets_loaded,
1108                            &osd->tx_size_1522, &nsd->tx_size_1522);
1109         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1110                            I40E_GLPRT_PTC9522L(hw->port),
1111                            pf->stat_offsets_loaded,
1112                            &osd->tx_size_big, &nsd->tx_size_big);
1113
1114         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1115                            pf->stat_offsets_loaded,
1116                            &osd->rx_undersize, &nsd->rx_undersize);
1117         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1118                            pf->stat_offsets_loaded,
1119                            &osd->rx_fragments, &nsd->rx_fragments);
1120         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1121                            pf->stat_offsets_loaded,
1122                            &osd->rx_oversize, &nsd->rx_oversize);
1123         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1124                            pf->stat_offsets_loaded,
1125                            &osd->rx_jabber, &nsd->rx_jabber);
1126
1127         /* FDIR stats */
1128         i40e_stat_update32(hw,
1129                            I40E_GLQF_PCNT(I40E_FD_ATR_STAT_IDX(pf->hw.pf_id)),
1130                            pf->stat_offsets_loaded,
1131                            &osd->fd_atr_match, &nsd->fd_atr_match);
1132         i40e_stat_update32(hw,
1133                            I40E_GLQF_PCNT(I40E_FD_SB_STAT_IDX(pf->hw.pf_id)),
1134                            pf->stat_offsets_loaded,
1135                            &osd->fd_sb_match, &nsd->fd_sb_match);
1136         i40e_stat_update32(hw,
1137                       I40E_GLQF_PCNT(I40E_FD_ATR_TUNNEL_STAT_IDX(pf->hw.pf_id)),
1138                       pf->stat_offsets_loaded,
1139                       &osd->fd_atr_tunnel_match, &nsd->fd_atr_tunnel_match);
1140
1141         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1142         nsd->tx_lpi_status =
1143                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1144                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1145         nsd->rx_lpi_status =
1146                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1147                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1148         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1149                            pf->stat_offsets_loaded,
1150                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1151         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1152                            pf->stat_offsets_loaded,
1153                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1154
1155         if (pf->flags & I40E_FLAG_FD_SB_ENABLED &&
1156             !(pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED))
1157                 nsd->fd_sb_status = true;
1158         else
1159                 nsd->fd_sb_status = false;
1160
1161         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED &&
1162             !(pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
1163                 nsd->fd_atr_status = true;
1164         else
1165                 nsd->fd_atr_status = false;
1166
1167         pf->stat_offsets_loaded = true;
1168 }
1169
1170 /**
1171  * i40e_update_stats - Update the various statistics counters.
1172  * @vsi: the VSI to be updated
1173  *
1174  * Update the various stats for this VSI and its related entities.
1175  **/
1176 void i40e_update_stats(struct i40e_vsi *vsi)
1177 {
1178         struct i40e_pf *pf = vsi->back;
1179
1180         if (vsi == pf->vsi[pf->lan_vsi])
1181                 i40e_update_pf_stats(pf);
1182
1183         i40e_update_vsi_stats(vsi);
1184 #ifdef I40E_FCOE
1185         i40e_update_fcoe_stats(vsi);
1186 #endif
1187 }
1188
1189 /**
1190  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1191  * @vsi: the VSI to be searched
1192  * @macaddr: the MAC address
1193  * @vlan: the vlan
1194  * @is_vf: make sure its a VF filter, else doesn't matter
1195  * @is_netdev: make sure its a netdev filter, else doesn't matter
1196  *
1197  * Returns ptr to the filter object or NULL
1198  **/
1199 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1200                                                 u8 *macaddr, s16 vlan,
1201                                                 bool is_vf, bool is_netdev)
1202 {
1203         struct i40e_mac_filter *f;
1204
1205         if (!vsi || !macaddr)
1206                 return NULL;
1207
1208         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1209                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1210                     (vlan == f->vlan)    &&
1211                     (!is_vf || f->is_vf) &&
1212                     (!is_netdev || f->is_netdev))
1213                         return f;
1214         }
1215         return NULL;
1216 }
1217
1218 /**
1219  * i40e_find_mac - Find a mac addr in the macvlan filters list
1220  * @vsi: the VSI to be searched
1221  * @macaddr: the MAC address we are searching for
1222  * @is_vf: make sure its a VF filter, else doesn't matter
1223  * @is_netdev: make sure its a netdev filter, else doesn't matter
1224  *
1225  * Returns the first filter with the provided MAC address or NULL if
1226  * MAC address was not found
1227  **/
1228 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1229                                       bool is_vf, bool is_netdev)
1230 {
1231         struct i40e_mac_filter *f;
1232
1233         if (!vsi || !macaddr)
1234                 return NULL;
1235
1236         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1237                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1238                     (!is_vf || f->is_vf) &&
1239                     (!is_netdev || f->is_netdev))
1240                         return f;
1241         }
1242         return NULL;
1243 }
1244
1245 /**
1246  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1247  * @vsi: the VSI to be searched
1248  *
1249  * Returns true if VSI is in vlan mode or false otherwise
1250  **/
1251 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1252 {
1253         struct i40e_mac_filter *f;
1254
1255         /* Only -1 for all the filters denotes not in vlan mode
1256          * so we have to go through all the list in order to make sure
1257          */
1258         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1259                 if (f->vlan >= 0)
1260                         return true;
1261         }
1262
1263         return false;
1264 }
1265
1266 /**
1267  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1268  * @vsi: the VSI to be searched
1269  * @macaddr: the mac address to be filtered
1270  * @is_vf: true if it is a VF
1271  * @is_netdev: true if it is a netdev
1272  *
1273  * Goes through all the macvlan filters and adds a
1274  * macvlan filter for each unique vlan that already exists
1275  *
1276  * Returns first filter found on success, else NULL
1277  **/
1278 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1279                                              bool is_vf, bool is_netdev)
1280 {
1281         struct i40e_mac_filter *f;
1282
1283         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1284                 if (vsi->info.pvid)
1285                         f->vlan = le16_to_cpu(vsi->info.pvid);
1286                 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1287                                       is_vf, is_netdev)) {
1288                         if (!i40e_add_filter(vsi, macaddr, f->vlan,
1289                                              is_vf, is_netdev))
1290                                 return NULL;
1291                 }
1292         }
1293
1294         return list_first_entry_or_null(&vsi->mac_filter_list,
1295                                         struct i40e_mac_filter, list);
1296 }
1297
1298 /**
1299  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1300  * @vsi: the PF Main VSI - inappropriate for any other VSI
1301  * @macaddr: the MAC address
1302  *
1303  * Some older firmware configurations set up a default promiscuous VLAN
1304  * filter that needs to be removed.
1305  **/
1306 static int i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1307 {
1308         struct i40e_aqc_remove_macvlan_element_data element;
1309         struct i40e_pf *pf = vsi->back;
1310         i40e_status ret;
1311
1312         /* Only appropriate for the PF main VSI */
1313         if (vsi->type != I40E_VSI_MAIN)
1314                 return -EINVAL;
1315
1316         memset(&element, 0, sizeof(element));
1317         ether_addr_copy(element.mac_addr, macaddr);
1318         element.vlan_tag = 0;
1319         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1320                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1321         ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1322         if (ret)
1323                 return -ENOENT;
1324
1325         return 0;
1326 }
1327
1328 /**
1329  * i40e_add_filter - Add a mac/vlan filter to the VSI
1330  * @vsi: the VSI to be searched
1331  * @macaddr: the MAC address
1332  * @vlan: the vlan
1333  * @is_vf: make sure its a VF filter, else doesn't matter
1334  * @is_netdev: make sure its a netdev filter, else doesn't matter
1335  *
1336  * Returns ptr to the filter object or NULL when no memory available.
1337  **/
1338 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1339                                         u8 *macaddr, s16 vlan,
1340                                         bool is_vf, bool is_netdev)
1341 {
1342         struct i40e_mac_filter *f;
1343
1344         if (!vsi || !macaddr)
1345                 return NULL;
1346
1347         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1348         if (!f) {
1349                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1350                 if (!f)
1351                         goto add_filter_out;
1352
1353                 ether_addr_copy(f->macaddr, macaddr);
1354                 f->vlan = vlan;
1355                 f->changed = true;
1356
1357                 INIT_LIST_HEAD(&f->list);
1358                 list_add(&f->list, &vsi->mac_filter_list);
1359         }
1360
1361         /* increment counter and add a new flag if needed */
1362         if (is_vf) {
1363                 if (!f->is_vf) {
1364                         f->is_vf = true;
1365                         f->counter++;
1366                 }
1367         } else if (is_netdev) {
1368                 if (!f->is_netdev) {
1369                         f->is_netdev = true;
1370                         f->counter++;
1371                 }
1372         } else {
1373                 f->counter++;
1374         }
1375
1376         /* changed tells sync_filters_subtask to
1377          * push the filter down to the firmware
1378          */
1379         if (f->changed) {
1380                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1381                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1382         }
1383
1384 add_filter_out:
1385         return f;
1386 }
1387
1388 /**
1389  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1390  * @vsi: the VSI to be searched
1391  * @macaddr: the MAC address
1392  * @vlan: the vlan
1393  * @is_vf: make sure it's a VF filter, else doesn't matter
1394  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1395  **/
1396 void i40e_del_filter(struct i40e_vsi *vsi,
1397                      u8 *macaddr, s16 vlan,
1398                      bool is_vf, bool is_netdev)
1399 {
1400         struct i40e_mac_filter *f;
1401
1402         if (!vsi || !macaddr)
1403                 return;
1404
1405         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1406         if (!f || f->counter == 0)
1407                 return;
1408
1409         if (is_vf) {
1410                 if (f->is_vf) {
1411                         f->is_vf = false;
1412                         f->counter--;
1413                 }
1414         } else if (is_netdev) {
1415                 if (f->is_netdev) {
1416                         f->is_netdev = false;
1417                         f->counter--;
1418                 }
1419         } else {
1420                 /* make sure we don't remove a filter in use by VF or netdev */
1421                 int min_f = 0;
1422                 min_f += (f->is_vf ? 1 : 0);
1423                 min_f += (f->is_netdev ? 1 : 0);
1424
1425                 if (f->counter > min_f)
1426                         f->counter--;
1427         }
1428
1429         /* counter == 0 tells sync_filters_subtask to
1430          * remove the filter from the firmware's list
1431          */
1432         if (f->counter == 0) {
1433                 f->changed = true;
1434                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1435                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1436         }
1437 }
1438
1439 /**
1440  * i40e_set_mac - NDO callback to set mac address
1441  * @netdev: network interface device structure
1442  * @p: pointer to an address structure
1443  *
1444  * Returns 0 on success, negative on failure
1445  **/
1446 #ifdef I40E_FCOE
1447 int i40e_set_mac(struct net_device *netdev, void *p)
1448 #else
1449 static int i40e_set_mac(struct net_device *netdev, void *p)
1450 #endif
1451 {
1452         struct i40e_netdev_priv *np = netdev_priv(netdev);
1453         struct i40e_vsi *vsi = np->vsi;
1454         struct i40e_pf *pf = vsi->back;
1455         struct i40e_hw *hw = &pf->hw;
1456         struct sockaddr *addr = p;
1457         struct i40e_mac_filter *f;
1458
1459         if (!is_valid_ether_addr(addr->sa_data))
1460                 return -EADDRNOTAVAIL;
1461
1462         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1463                 netdev_info(netdev, "already using mac address %pM\n",
1464                             addr->sa_data);
1465                 return 0;
1466         }
1467
1468         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1469             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1470                 return -EADDRNOTAVAIL;
1471
1472         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1473                 netdev_info(netdev, "returning to hw mac address %pM\n",
1474                             hw->mac.addr);
1475         else
1476                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1477
1478         if (vsi->type == I40E_VSI_MAIN) {
1479                 i40e_status ret;
1480                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1481                                                 I40E_AQC_WRITE_TYPE_LAA_WOL,
1482                                                 addr->sa_data, NULL);
1483                 if (ret) {
1484                         netdev_info(netdev,
1485                                     "Addr change for Main VSI failed: %d\n",
1486                                     ret);
1487                         return -EADDRNOTAVAIL;
1488                 }
1489         }
1490
1491         if (ether_addr_equal(netdev->dev_addr, hw->mac.addr)) {
1492                 struct i40e_aqc_remove_macvlan_element_data element;
1493
1494                 memset(&element, 0, sizeof(element));
1495                 ether_addr_copy(element.mac_addr, netdev->dev_addr);
1496                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1497                 i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1498         } else {
1499                 i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
1500                                 false, false);
1501         }
1502
1503         if (ether_addr_equal(addr->sa_data, hw->mac.addr)) {
1504                 struct i40e_aqc_add_macvlan_element_data element;
1505
1506                 memset(&element, 0, sizeof(element));
1507                 ether_addr_copy(element.mac_addr, hw->mac.addr);
1508                 element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
1509                 i40e_aq_add_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1510         } else {
1511                 f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY,
1512                                     false, false);
1513                 if (f)
1514                         f->is_laa = true;
1515         }
1516
1517         i40e_sync_vsi_filters(vsi);
1518         ether_addr_copy(netdev->dev_addr, addr->sa_data);
1519
1520         return 0;
1521 }
1522
1523 /**
1524  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1525  * @vsi: the VSI being setup
1526  * @ctxt: VSI context structure
1527  * @enabled_tc: Enabled TCs bitmap
1528  * @is_add: True if called before Add VSI
1529  *
1530  * Setup VSI queue mapping for enabled traffic classes.
1531  **/
1532 #ifdef I40E_FCOE
1533 void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1534                               struct i40e_vsi_context *ctxt,
1535                               u8 enabled_tc,
1536                               bool is_add)
1537 #else
1538 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1539                                      struct i40e_vsi_context *ctxt,
1540                                      u8 enabled_tc,
1541                                      bool is_add)
1542 #endif
1543 {
1544         struct i40e_pf *pf = vsi->back;
1545         u16 sections = 0;
1546         u8 netdev_tc = 0;
1547         u16 numtc = 0;
1548         u16 qcount;
1549         u8 offset;
1550         u16 qmap;
1551         int i;
1552         u16 num_tc_qps = 0;
1553
1554         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1555         offset = 0;
1556
1557         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1558                 /* Find numtc from enabled TC bitmap */
1559                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1560                         if (enabled_tc & BIT_ULL(i)) /* TC is enabled */
1561                                 numtc++;
1562                 }
1563                 if (!numtc) {
1564                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1565                         numtc = 1;
1566                 }
1567         } else {
1568                 /* At least TC0 is enabled in case of non-DCB case */
1569                 numtc = 1;
1570         }
1571
1572         vsi->tc_config.numtc = numtc;
1573         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1574         /* Number of queues per enabled TC */
1575         /* In MFP case we can have a much lower count of MSIx
1576          * vectors available and so we need to lower the used
1577          * q count.
1578          */
1579         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1580                 qcount = min_t(int, vsi->alloc_queue_pairs, pf->num_lan_msix);
1581         else
1582                 qcount = vsi->alloc_queue_pairs;
1583         num_tc_qps = qcount / numtc;
1584         num_tc_qps = min_t(int, num_tc_qps, i40e_pf_get_max_q_per_tc(pf));
1585
1586         /* Setup queue offset/count for all TCs for given VSI */
1587         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1588                 /* See if the given TC is enabled for the given VSI */
1589                 if (vsi->tc_config.enabled_tc & BIT_ULL(i)) {
1590                         /* TC is enabled */
1591                         int pow, num_qps;
1592
1593                         switch (vsi->type) {
1594                         case I40E_VSI_MAIN:
1595                                 qcount = min_t(int, pf->rss_size, num_tc_qps);
1596                                 break;
1597 #ifdef I40E_FCOE
1598                         case I40E_VSI_FCOE:
1599                                 qcount = num_tc_qps;
1600                                 break;
1601 #endif
1602                         case I40E_VSI_FDIR:
1603                         case I40E_VSI_SRIOV:
1604                         case I40E_VSI_VMDQ2:
1605                         default:
1606                                 qcount = num_tc_qps;
1607                                 WARN_ON(i != 0);
1608                                 break;
1609                         }
1610                         vsi->tc_config.tc_info[i].qoffset = offset;
1611                         vsi->tc_config.tc_info[i].qcount = qcount;
1612
1613                         /* find the next higher power-of-2 of num queue pairs */
1614                         num_qps = qcount;
1615                         pow = 0;
1616                         while (num_qps && (BIT_ULL(pow) < qcount)) {
1617                                 pow++;
1618                                 num_qps >>= 1;
1619                         }
1620
1621                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1622                         qmap =
1623                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1624                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1625
1626                         offset += qcount;
1627                 } else {
1628                         /* TC is not enabled so set the offset to
1629                          * default queue and allocate one queue
1630                          * for the given TC.
1631                          */
1632                         vsi->tc_config.tc_info[i].qoffset = 0;
1633                         vsi->tc_config.tc_info[i].qcount = 1;
1634                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1635
1636                         qmap = 0;
1637                 }
1638                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1639         }
1640
1641         /* Set actual Tx/Rx queue pairs */
1642         vsi->num_queue_pairs = offset;
1643         if ((vsi->type == I40E_VSI_MAIN) && (numtc == 1)) {
1644                 if (vsi->req_queue_pairs > 0)
1645                         vsi->num_queue_pairs = vsi->req_queue_pairs;
1646                 else if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1647                         vsi->num_queue_pairs = pf->num_lan_msix;
1648         }
1649
1650         /* Scheduler section valid can only be set for ADD VSI */
1651         if (is_add) {
1652                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1653
1654                 ctxt->info.up_enable_bits = enabled_tc;
1655         }
1656         if (vsi->type == I40E_VSI_SRIOV) {
1657                 ctxt->info.mapping_flags |=
1658                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1659                 for (i = 0; i < vsi->num_queue_pairs; i++)
1660                         ctxt->info.queue_mapping[i] =
1661                                                cpu_to_le16(vsi->base_queue + i);
1662         } else {
1663                 ctxt->info.mapping_flags |=
1664                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1665                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1666         }
1667         ctxt->info.valid_sections |= cpu_to_le16(sections);
1668 }
1669
1670 /**
1671  * i40e_set_rx_mode - NDO callback to set the netdev filters
1672  * @netdev: network interface device structure
1673  **/
1674 #ifdef I40E_FCOE
1675 void i40e_set_rx_mode(struct net_device *netdev)
1676 #else
1677 static void i40e_set_rx_mode(struct net_device *netdev)
1678 #endif
1679 {
1680         struct i40e_netdev_priv *np = netdev_priv(netdev);
1681         struct i40e_mac_filter *f, *ftmp;
1682         struct i40e_vsi *vsi = np->vsi;
1683         struct netdev_hw_addr *uca;
1684         struct netdev_hw_addr *mca;
1685         struct netdev_hw_addr *ha;
1686
1687         /* add addr if not already in the filter list */
1688         netdev_for_each_uc_addr(uca, netdev) {
1689                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1690                         if (i40e_is_vsi_in_vlan(vsi))
1691                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1692                                                      false, true);
1693                         else
1694                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1695                                                 false, true);
1696                 }
1697         }
1698
1699         netdev_for_each_mc_addr(mca, netdev) {
1700                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1701                         if (i40e_is_vsi_in_vlan(vsi))
1702                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1703                                                      false, true);
1704                         else
1705                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1706                                                 false, true);
1707                 }
1708         }
1709
1710         /* remove filter if not in netdev list */
1711         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1712                 bool found = false;
1713
1714                 if (!f->is_netdev)
1715                         continue;
1716
1717                 if (is_multicast_ether_addr(f->macaddr)) {
1718                         netdev_for_each_mc_addr(mca, netdev) {
1719                                 if (ether_addr_equal(mca->addr, f->macaddr)) {
1720                                         found = true;
1721                                         break;
1722                                 }
1723                         }
1724                 } else {
1725                         netdev_for_each_uc_addr(uca, netdev) {
1726                                 if (ether_addr_equal(uca->addr, f->macaddr)) {
1727                                         found = true;
1728                                         break;
1729                                 }
1730                         }
1731
1732                         for_each_dev_addr(netdev, ha) {
1733                                 if (ether_addr_equal(ha->addr, f->macaddr)) {
1734                                         found = true;
1735                                         break;
1736                                 }
1737                         }
1738                 }
1739                 if (!found)
1740                         i40e_del_filter(
1741                            vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1742         }
1743
1744         /* check for other flag changes */
1745         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1746                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1747                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1748         }
1749 }
1750
1751 /**
1752  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1753  * @vsi: ptr to the VSI
1754  *
1755  * Push any outstanding VSI filter changes through the AdminQ.
1756  *
1757  * Returns 0 or error value
1758  **/
1759 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
1760 {
1761         struct i40e_mac_filter *f, *ftmp;
1762         bool promisc_forced_on = false;
1763         bool add_happened = false;
1764         int filter_list_len = 0;
1765         u32 changed_flags = 0;
1766         i40e_status ret = 0;
1767         struct i40e_pf *pf;
1768         int num_add = 0;
1769         int num_del = 0;
1770         int aq_err = 0;
1771         u16 cmd_flags;
1772
1773         /* empty array typed pointers, kcalloc later */
1774         struct i40e_aqc_add_macvlan_element_data *add_list;
1775         struct i40e_aqc_remove_macvlan_element_data *del_list;
1776
1777         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1778                 usleep_range(1000, 2000);
1779         pf = vsi->back;
1780
1781         if (vsi->netdev) {
1782                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1783                 vsi->current_netdev_flags = vsi->netdev->flags;
1784         }
1785
1786         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1787                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1788
1789                 filter_list_len = pf->hw.aq.asq_buf_size /
1790                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1791                 del_list = kcalloc(filter_list_len,
1792                             sizeof(struct i40e_aqc_remove_macvlan_element_data),
1793                             GFP_KERNEL);
1794                 if (!del_list)
1795                         return -ENOMEM;
1796
1797                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1798                         if (!f->changed)
1799                                 continue;
1800
1801                         if (f->counter != 0)
1802                                 continue;
1803                         f->changed = false;
1804                         cmd_flags = 0;
1805
1806                         /* add to delete list */
1807                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
1808                         del_list[num_del].vlan_tag =
1809                                 cpu_to_le16((u16)(f->vlan ==
1810                                             I40E_VLAN_ANY ? 0 : f->vlan));
1811
1812                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1813                         del_list[num_del].flags = cmd_flags;
1814                         num_del++;
1815
1816                         /* unlink from filter list */
1817                         list_del(&f->list);
1818                         kfree(f);
1819
1820                         /* flush a full buffer */
1821                         if (num_del == filter_list_len) {
1822                                 ret = i40e_aq_remove_macvlan(&pf->hw,
1823                                                   vsi->seid, del_list, num_del,
1824                                                   NULL);
1825                                 aq_err = pf->hw.aq.asq_last_status;
1826                                 num_del = 0;
1827                                 memset(del_list, 0, sizeof(*del_list));
1828
1829                                 if (ret && aq_err != I40E_AQ_RC_ENOENT)
1830                                         dev_info(&pf->pdev->dev,
1831                                                  "ignoring delete macvlan error, err %s, aq_err %s while flushing a full buffer\n",
1832                                                  i40e_stat_str(&pf->hw, ret),
1833                                                  i40e_aq_str(&pf->hw, aq_err));
1834                         }
1835                 }
1836                 if (num_del) {
1837                         ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
1838                                                      del_list, num_del, NULL);
1839                         aq_err = pf->hw.aq.asq_last_status;
1840                         num_del = 0;
1841
1842                         if (ret && aq_err != I40E_AQ_RC_ENOENT)
1843                                 dev_info(&pf->pdev->dev,
1844                                          "ignoring delete macvlan error, err %s aq_err %s\n",
1845                                          i40e_stat_str(&pf->hw, ret),
1846                                          i40e_aq_str(&pf->hw, aq_err));
1847                 }
1848
1849                 kfree(del_list);
1850                 del_list = NULL;
1851
1852                 /* do all the adds now */
1853                 filter_list_len = pf->hw.aq.asq_buf_size /
1854                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1855                 add_list = kcalloc(filter_list_len,
1856                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1857                                GFP_KERNEL);
1858                 if (!add_list)
1859                         return -ENOMEM;
1860
1861                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1862                         if (!f->changed)
1863                                 continue;
1864
1865                         if (f->counter == 0)
1866                                 continue;
1867                         f->changed = false;
1868                         add_happened = true;
1869                         cmd_flags = 0;
1870
1871                         /* add to add array */
1872                         ether_addr_copy(add_list[num_add].mac_addr, f->macaddr);
1873                         add_list[num_add].vlan_tag =
1874                                 cpu_to_le16(
1875                                  (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
1876                         add_list[num_add].queue_number = 0;
1877
1878                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
1879                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
1880                         num_add++;
1881
1882                         /* flush a full buffer */
1883                         if (num_add == filter_list_len) {
1884                                 ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1885                                                           add_list, num_add,
1886                                                           NULL);
1887                                 aq_err = pf->hw.aq.asq_last_status;
1888                                 num_add = 0;
1889
1890                                 if (ret)
1891                                         break;
1892                                 memset(add_list, 0, sizeof(*add_list));
1893                         }
1894                 }
1895                 if (num_add) {
1896                         ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1897                                                   add_list, num_add, NULL);
1898                         aq_err = pf->hw.aq.asq_last_status;
1899                         num_add = 0;
1900                 }
1901                 kfree(add_list);
1902                 add_list = NULL;
1903
1904                 if (add_happened && ret && aq_err != I40E_AQ_RC_EINVAL) {
1905                         dev_info(&pf->pdev->dev,
1906                                  "add filter failed, err %s aq_err %s\n",
1907                                  i40e_stat_str(&pf->hw, ret),
1908                                  i40e_aq_str(&pf->hw, aq_err));
1909                         if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
1910                             !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1911                                       &vsi->state)) {
1912                                 promisc_forced_on = true;
1913                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1914                                         &vsi->state);
1915                                 dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
1916                         }
1917                 }
1918         }
1919
1920         /* check for changes in promiscuous modes */
1921         if (changed_flags & IFF_ALLMULTI) {
1922                 bool cur_multipromisc;
1923                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
1924                 ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
1925                                                             vsi->seid,
1926                                                             cur_multipromisc,
1927                                                             NULL);
1928                 if (ret)
1929                         dev_info(&pf->pdev->dev,
1930                                  "set multi promisc failed, err %s aq_err %s\n",
1931                                  i40e_stat_str(&pf->hw, ret),
1932                                  i40e_aq_str(&pf->hw,
1933                                              pf->hw.aq.asq_last_status));
1934         }
1935         if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
1936                 bool cur_promisc;
1937                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
1938                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1939                                         &vsi->state));
1940                 if (vsi->type == I40E_VSI_MAIN && pf->lan_veb != I40E_NO_VEB) {
1941                         /* set defport ON for Main VSI instead of true promisc
1942                          * this way we will get all unicast/multicast and VLAN
1943                          * promisc behavior but will not get VF or VMDq traffic
1944                          * replicated on the Main VSI.
1945                          */
1946                         if (pf->cur_promisc != cur_promisc) {
1947                                 pf->cur_promisc = cur_promisc;
1948                                 i40e_do_reset_safe(pf,
1949                                                 BIT(__I40E_PF_RESET_REQUESTED));
1950                         }
1951                 } else {
1952                         ret = i40e_aq_set_vsi_unicast_promiscuous(
1953                                                           &vsi->back->hw,
1954                                                           vsi->seid,
1955                                                           cur_promisc, NULL);
1956                         if (ret)
1957                                 dev_info(&pf->pdev->dev,
1958                                          "set unicast promisc failed, err %d, aq_err %d\n",
1959                                          ret, pf->hw.aq.asq_last_status);
1960                         ret = i40e_aq_set_vsi_multicast_promiscuous(
1961                                                           &vsi->back->hw,
1962                                                           vsi->seid,
1963                                                           cur_promisc, NULL);
1964                         if (ret)
1965                                 dev_info(&pf->pdev->dev,
1966                                          "set multicast promisc failed, err %d, aq_err %d\n",
1967                                          ret, pf->hw.aq.asq_last_status);
1968                 }
1969                 ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
1970                                                 vsi->seid,
1971                                                 cur_promisc, NULL);
1972                 if (ret)
1973                         dev_info(&pf->pdev->dev,
1974                                  "set brdcast promisc failed, err %s, aq_err %s\n",
1975                                  i40e_stat_str(&pf->hw, ret),
1976                                  i40e_aq_str(&pf->hw,
1977                                              pf->hw.aq.asq_last_status));
1978         }
1979
1980         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
1981         return 0;
1982 }
1983
1984 /**
1985  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
1986  * @pf: board private structure
1987  **/
1988 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
1989 {
1990         int v;
1991
1992         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
1993                 return;
1994         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
1995
1996         for (v = 0; v < pf->num_alloc_vsi; v++) {
1997                 if (pf->vsi[v] &&
1998                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED))
1999                         i40e_sync_vsi_filters(pf->vsi[v]);
2000         }
2001 }
2002
2003 /**
2004  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
2005  * @netdev: network interface device structure
2006  * @new_mtu: new value for maximum frame size
2007  *
2008  * Returns 0 on success, negative on failure
2009  **/
2010 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
2011 {
2012         struct i40e_netdev_priv *np = netdev_priv(netdev);
2013         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
2014         struct i40e_vsi *vsi = np->vsi;
2015
2016         /* MTU < 68 is an error and causes problems on some kernels */
2017         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
2018                 return -EINVAL;
2019
2020         netdev_info(netdev, "changing MTU from %d to %d\n",
2021                     netdev->mtu, new_mtu);
2022         netdev->mtu = new_mtu;
2023         if (netif_running(netdev))
2024                 i40e_vsi_reinit_locked(vsi);
2025
2026         return 0;
2027 }
2028
2029 /**
2030  * i40e_ioctl - Access the hwtstamp interface
2031  * @netdev: network interface device structure
2032  * @ifr: interface request data
2033  * @cmd: ioctl command
2034  **/
2035 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2036 {
2037         struct i40e_netdev_priv *np = netdev_priv(netdev);
2038         struct i40e_pf *pf = np->vsi->back;
2039
2040         switch (cmd) {
2041         case SIOCGHWTSTAMP:
2042                 return i40e_ptp_get_ts_config(pf, ifr);
2043         case SIOCSHWTSTAMP:
2044                 return i40e_ptp_set_ts_config(pf, ifr);
2045         default:
2046                 return -EOPNOTSUPP;
2047         }
2048 }
2049
2050 /**
2051  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
2052  * @vsi: the vsi being adjusted
2053  **/
2054 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
2055 {
2056         struct i40e_vsi_context ctxt;
2057         i40e_status ret;
2058
2059         if ((vsi->info.valid_sections &
2060              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2061             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
2062                 return;  /* already enabled */
2063
2064         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2065         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2066                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
2067
2068         ctxt.seid = vsi->seid;
2069         ctxt.info = vsi->info;
2070         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2071         if (ret) {
2072                 dev_info(&vsi->back->pdev->dev,
2073                          "update vlan stripping failed, err %s aq_err %s\n",
2074                          i40e_stat_str(&vsi->back->hw, ret),
2075                          i40e_aq_str(&vsi->back->hw,
2076                                      vsi->back->hw.aq.asq_last_status));
2077         }
2078 }
2079
2080 /**
2081  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
2082  * @vsi: the vsi being adjusted
2083  **/
2084 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
2085 {
2086         struct i40e_vsi_context ctxt;
2087         i40e_status ret;
2088
2089         if ((vsi->info.valid_sections &
2090              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2091             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
2092              I40E_AQ_VSI_PVLAN_EMOD_MASK))
2093                 return;  /* already disabled */
2094
2095         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2096         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2097                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
2098
2099         ctxt.seid = vsi->seid;
2100         ctxt.info = vsi->info;
2101         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2102         if (ret) {
2103                 dev_info(&vsi->back->pdev->dev,
2104                          "update vlan stripping failed, err %s aq_err %s\n",
2105                          i40e_stat_str(&vsi->back->hw, ret),
2106                          i40e_aq_str(&vsi->back->hw,
2107                                      vsi->back->hw.aq.asq_last_status));
2108         }
2109 }
2110
2111 /**
2112  * i40e_vlan_rx_register - Setup or shutdown vlan offload
2113  * @netdev: network interface to be adjusted
2114  * @features: netdev features to test if VLAN offload is enabled or not
2115  **/
2116 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
2117 {
2118         struct i40e_netdev_priv *np = netdev_priv(netdev);
2119         struct i40e_vsi *vsi = np->vsi;
2120
2121         if (features & NETIF_F_HW_VLAN_CTAG_RX)
2122                 i40e_vlan_stripping_enable(vsi);
2123         else
2124                 i40e_vlan_stripping_disable(vsi);
2125 }
2126
2127 /**
2128  * i40e_vsi_add_vlan - Add vsi membership for given vlan
2129  * @vsi: the vsi being configured
2130  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2131  **/
2132 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
2133 {
2134         struct i40e_mac_filter *f, *add_f;
2135         bool is_netdev, is_vf;
2136
2137         is_vf = (vsi->type == I40E_VSI_SRIOV);
2138         is_netdev = !!(vsi->netdev);
2139
2140         if (is_netdev) {
2141                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
2142                                         is_vf, is_netdev);
2143                 if (!add_f) {
2144                         dev_info(&vsi->back->pdev->dev,
2145                                  "Could not add vlan filter %d for %pM\n",
2146                                  vid, vsi->netdev->dev_addr);
2147                         return -ENOMEM;
2148                 }
2149         }
2150
2151         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2152                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2153                 if (!add_f) {
2154                         dev_info(&vsi->back->pdev->dev,
2155                                  "Could not add vlan filter %d for %pM\n",
2156                                  vid, f->macaddr);
2157                         return -ENOMEM;
2158                 }
2159         }
2160
2161         /* Now if we add a vlan tag, make sure to check if it is the first
2162          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
2163          * with 0, so we now accept untagged and specified tagged traffic
2164          * (and not any taged and untagged)
2165          */
2166         if (vid > 0) {
2167                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
2168                                                   I40E_VLAN_ANY,
2169                                                   is_vf, is_netdev)) {
2170                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
2171                                         I40E_VLAN_ANY, is_vf, is_netdev);
2172                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
2173                                                 is_vf, is_netdev);
2174                         if (!add_f) {
2175                                 dev_info(&vsi->back->pdev->dev,
2176                                          "Could not add filter 0 for %pM\n",
2177                                          vsi->netdev->dev_addr);
2178                                 return -ENOMEM;
2179                         }
2180                 }
2181         }
2182
2183         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
2184         if (vid > 0 && !vsi->info.pvid) {
2185                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2186                         if (i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2187                                              is_vf, is_netdev)) {
2188                                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2189                                                 is_vf, is_netdev);
2190                                 add_f = i40e_add_filter(vsi, f->macaddr,
2191                                                         0, is_vf, is_netdev);
2192                                 if (!add_f) {
2193                                         dev_info(&vsi->back->pdev->dev,
2194                                                  "Could not add filter 0 for %pM\n",
2195                                                  f->macaddr);
2196                                         return -ENOMEM;
2197                                 }
2198                         }
2199                 }
2200         }
2201
2202         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2203             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2204                 return 0;
2205
2206         return i40e_sync_vsi_filters(vsi);
2207 }
2208
2209 /**
2210  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
2211  * @vsi: the vsi being configured
2212  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2213  *
2214  * Return: 0 on success or negative otherwise
2215  **/
2216 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
2217 {
2218         struct net_device *netdev = vsi->netdev;
2219         struct i40e_mac_filter *f, *add_f;
2220         bool is_vf, is_netdev;
2221         int filter_count = 0;
2222
2223         is_vf = (vsi->type == I40E_VSI_SRIOV);
2224         is_netdev = !!(netdev);
2225
2226         if (is_netdev)
2227                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
2228
2229         list_for_each_entry(f, &vsi->mac_filter_list, list)
2230                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2231
2232         /* go through all the filters for this VSI and if there is only
2233          * vid == 0 it means there are no other filters, so vid 0 must
2234          * be replaced with -1. This signifies that we should from now
2235          * on accept any traffic (with any tag present, or untagged)
2236          */
2237         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2238                 if (is_netdev) {
2239                         if (f->vlan &&
2240                             ether_addr_equal(netdev->dev_addr, f->macaddr))
2241                                 filter_count++;
2242                 }
2243
2244                 if (f->vlan)
2245                         filter_count++;
2246         }
2247
2248         if (!filter_count && is_netdev) {
2249                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
2250                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
2251                                     is_vf, is_netdev);
2252                 if (!f) {
2253                         dev_info(&vsi->back->pdev->dev,
2254                                  "Could not add filter %d for %pM\n",
2255                                  I40E_VLAN_ANY, netdev->dev_addr);
2256                         return -ENOMEM;
2257                 }
2258         }
2259
2260         if (!filter_count) {
2261                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2262                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
2263                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2264                                             is_vf, is_netdev);
2265                         if (!add_f) {
2266                                 dev_info(&vsi->back->pdev->dev,
2267                                          "Could not add filter %d for %pM\n",
2268                                          I40E_VLAN_ANY, f->macaddr);
2269                                 return -ENOMEM;
2270                         }
2271                 }
2272         }
2273
2274         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2275             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2276                 return 0;
2277
2278         return i40e_sync_vsi_filters(vsi);
2279 }
2280
2281 /**
2282  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2283  * @netdev: network interface to be adjusted
2284  * @vid: vlan id to be added
2285  *
2286  * net_device_ops implementation for adding vlan ids
2287  **/
2288 #ifdef I40E_FCOE
2289 int i40e_vlan_rx_add_vid(struct net_device *netdev,
2290                          __always_unused __be16 proto, u16 vid)
2291 #else
2292 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2293                                 __always_unused __be16 proto, u16 vid)
2294 #endif
2295 {
2296         struct i40e_netdev_priv *np = netdev_priv(netdev);
2297         struct i40e_vsi *vsi = np->vsi;
2298         int ret = 0;
2299
2300         if (vid > 4095)
2301                 return -EINVAL;
2302
2303         netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
2304
2305         /* If the network stack called us with vid = 0 then
2306          * it is asking to receive priority tagged packets with
2307          * vlan id 0.  Our HW receives them by default when configured
2308          * to receive untagged packets so there is no need to add an
2309          * extra filter for vlan 0 tagged packets.
2310          */
2311         if (vid)
2312                 ret = i40e_vsi_add_vlan(vsi, vid);
2313
2314         if (!ret && (vid < VLAN_N_VID))
2315                 set_bit(vid, vsi->active_vlans);
2316
2317         return ret;
2318 }
2319
2320 /**
2321  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2322  * @netdev: network interface to be adjusted
2323  * @vid: vlan id to be removed
2324  *
2325  * net_device_ops implementation for removing vlan ids
2326  **/
2327 #ifdef I40E_FCOE
2328 int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2329                           __always_unused __be16 proto, u16 vid)
2330 #else
2331 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2332                                  __always_unused __be16 proto, u16 vid)
2333 #endif
2334 {
2335         struct i40e_netdev_priv *np = netdev_priv(netdev);
2336         struct i40e_vsi *vsi = np->vsi;
2337
2338         netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
2339
2340         /* return code is ignored as there is nothing a user
2341          * can do about failure to remove and a log message was
2342          * already printed from the other function
2343          */
2344         i40e_vsi_kill_vlan(vsi, vid);
2345
2346         clear_bit(vid, vsi->active_vlans);
2347
2348         return 0;
2349 }
2350
2351 /**
2352  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2353  * @vsi: the vsi being brought back up
2354  **/
2355 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2356 {
2357         u16 vid;
2358
2359         if (!vsi->netdev)
2360                 return;
2361
2362         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2363
2364         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2365                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2366                                      vid);
2367 }
2368
2369 /**
2370  * i40e_vsi_add_pvid - Add pvid for the VSI
2371  * @vsi: the vsi being adjusted
2372  * @vid: the vlan id to set as a PVID
2373  **/
2374 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2375 {
2376         struct i40e_vsi_context ctxt;
2377         i40e_status ret;
2378
2379         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2380         vsi->info.pvid = cpu_to_le16(vid);
2381         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2382                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2383                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2384
2385         ctxt.seid = vsi->seid;
2386         ctxt.info = vsi->info;
2387         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2388         if (ret) {
2389                 dev_info(&vsi->back->pdev->dev,
2390                          "add pvid failed, err %s aq_err %s\n",
2391                          i40e_stat_str(&vsi->back->hw, ret),
2392                          i40e_aq_str(&vsi->back->hw,
2393                                      vsi->back->hw.aq.asq_last_status));
2394                 return -ENOENT;
2395         }
2396
2397         return 0;
2398 }
2399
2400 /**
2401  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2402  * @vsi: the vsi being adjusted
2403  *
2404  * Just use the vlan_rx_register() service to put it back to normal
2405  **/
2406 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2407 {
2408         i40e_vlan_stripping_disable(vsi);
2409
2410         vsi->info.pvid = 0;
2411 }
2412
2413 /**
2414  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2415  * @vsi: ptr to the VSI
2416  *
2417  * If this function returns with an error, then it's possible one or
2418  * more of the rings is populated (while the rest are not).  It is the
2419  * callers duty to clean those orphaned rings.
2420  *
2421  * Return 0 on success, negative on failure
2422  **/
2423 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2424 {
2425         int i, err = 0;
2426
2427         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2428                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2429
2430         return err;
2431 }
2432
2433 /**
2434  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2435  * @vsi: ptr to the VSI
2436  *
2437  * Free VSI's transmit software resources
2438  **/
2439 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2440 {
2441         int i;
2442
2443         if (!vsi->tx_rings)
2444                 return;
2445
2446         for (i = 0; i < vsi->num_queue_pairs; i++)
2447                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2448                         i40e_free_tx_resources(vsi->tx_rings[i]);
2449 }
2450
2451 /**
2452  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2453  * @vsi: ptr to the VSI
2454  *
2455  * If this function returns with an error, then it's possible one or
2456  * more of the rings is populated (while the rest are not).  It is the
2457  * callers duty to clean those orphaned rings.
2458  *
2459  * Return 0 on success, negative on failure
2460  **/
2461 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2462 {
2463         int i, err = 0;
2464
2465         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2466                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2467 #ifdef I40E_FCOE
2468         i40e_fcoe_setup_ddp_resources(vsi);
2469 #endif
2470         return err;
2471 }
2472
2473 /**
2474  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2475  * @vsi: ptr to the VSI
2476  *
2477  * Free all receive software resources
2478  **/
2479 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2480 {
2481         int i;
2482
2483         if (!vsi->rx_rings)
2484                 return;
2485
2486         for (i = 0; i < vsi->num_queue_pairs; i++)
2487                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2488                         i40e_free_rx_resources(vsi->rx_rings[i]);
2489 #ifdef I40E_FCOE
2490         i40e_fcoe_free_ddp_resources(vsi);
2491 #endif
2492 }
2493
2494 /**
2495  * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
2496  * @ring: The Tx ring to configure
2497  *
2498  * This enables/disables XPS for a given Tx descriptor ring
2499  * based on the TCs enabled for the VSI that ring belongs to.
2500  **/
2501 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
2502 {
2503         struct i40e_vsi *vsi = ring->vsi;
2504         cpumask_var_t mask;
2505
2506         if (!ring->q_vector || !ring->netdev)
2507                 return;
2508
2509         /* Single TC mode enable XPS */
2510         if (vsi->tc_config.numtc <= 1) {
2511                 if (!test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2512                         netif_set_xps_queue(ring->netdev,
2513                                             &ring->q_vector->affinity_mask,
2514                                             ring->queue_index);
2515         } else if (alloc_cpumask_var(&mask, GFP_KERNEL)) {
2516                 /* Disable XPS to allow selection based on TC */
2517                 bitmap_zero(cpumask_bits(mask), nr_cpumask_bits);
2518                 netif_set_xps_queue(ring->netdev, mask, ring->queue_index);
2519                 free_cpumask_var(mask);
2520         }
2521 }
2522
2523 /**
2524  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2525  * @ring: The Tx ring to configure
2526  *
2527  * Configure the Tx descriptor ring in the HMC context.
2528  **/
2529 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2530 {
2531         struct i40e_vsi *vsi = ring->vsi;
2532         u16 pf_q = vsi->base_queue + ring->queue_index;
2533         struct i40e_hw *hw = &vsi->back->hw;
2534         struct i40e_hmc_obj_txq tx_ctx;
2535         i40e_status err = 0;
2536         u32 qtx_ctl = 0;
2537
2538         /* some ATR related tx ring init */
2539         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2540                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2541                 ring->atr_count = 0;
2542         } else {
2543                 ring->atr_sample_rate = 0;
2544         }
2545
2546         /* configure XPS */
2547         i40e_config_xps_tx_ring(ring);
2548
2549         /* clear the context structure first */
2550         memset(&tx_ctx, 0, sizeof(tx_ctx));
2551
2552         tx_ctx.new_context = 1;
2553         tx_ctx.base = (ring->dma / 128);
2554         tx_ctx.qlen = ring->count;
2555         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2556                                                I40E_FLAG_FD_ATR_ENABLED));
2557 #ifdef I40E_FCOE
2558         tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2559 #endif
2560         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2561         /* FDIR VSI tx ring can still use RS bit and writebacks */
2562         if (vsi->type != I40E_VSI_FDIR)
2563                 tx_ctx.head_wb_ena = 1;
2564         tx_ctx.head_wb_addr = ring->dma +
2565                               (ring->count * sizeof(struct i40e_tx_desc));
2566
2567         /* As part of VSI creation/update, FW allocates certain
2568          * Tx arbitration queue sets for each TC enabled for
2569          * the VSI. The FW returns the handles to these queue
2570          * sets as part of the response buffer to Add VSI,
2571          * Update VSI, etc. AQ commands. It is expected that
2572          * these queue set handles be associated with the Tx
2573          * queues by the driver as part of the TX queue context
2574          * initialization. This has to be done regardless of
2575          * DCB as by default everything is mapped to TC0.
2576          */
2577         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2578         tx_ctx.rdylist_act = 0;
2579
2580         /* clear the context in the HMC */
2581         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2582         if (err) {
2583                 dev_info(&vsi->back->pdev->dev,
2584                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2585                          ring->queue_index, pf_q, err);
2586                 return -ENOMEM;
2587         }
2588
2589         /* set the context in the HMC */
2590         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2591         if (err) {
2592                 dev_info(&vsi->back->pdev->dev,
2593                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2594                          ring->queue_index, pf_q, err);
2595                 return -ENOMEM;
2596         }
2597
2598         /* Now associate this queue with this PCI function */
2599         if (vsi->type == I40E_VSI_VMDQ2) {
2600                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2601                 qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
2602                            I40E_QTX_CTL_VFVM_INDX_MASK;
2603         } else {
2604                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2605         }
2606
2607         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2608                     I40E_QTX_CTL_PF_INDX_MASK);
2609         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2610         i40e_flush(hw);
2611
2612         clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
2613
2614         /* cache tail off for easier writes later */
2615         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2616
2617         return 0;
2618 }
2619
2620 /**
2621  * i40e_configure_rx_ring - Configure a receive ring context
2622  * @ring: The Rx ring to configure
2623  *
2624  * Configure the Rx descriptor ring in the HMC context.
2625  **/
2626 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2627 {
2628         struct i40e_vsi *vsi = ring->vsi;
2629         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2630         u16 pf_q = vsi->base_queue + ring->queue_index;
2631         struct i40e_hw *hw = &vsi->back->hw;
2632         struct i40e_hmc_obj_rxq rx_ctx;
2633         i40e_status err = 0;
2634
2635         ring->state = 0;
2636
2637         /* clear the context structure first */
2638         memset(&rx_ctx, 0, sizeof(rx_ctx));
2639
2640         ring->rx_buf_len = vsi->rx_buf_len;
2641         ring->rx_hdr_len = vsi->rx_hdr_len;
2642
2643         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2644         rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
2645
2646         rx_ctx.base = (ring->dma / 128);
2647         rx_ctx.qlen = ring->count;
2648
2649         if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
2650                 set_ring_16byte_desc_enabled(ring);
2651                 rx_ctx.dsize = 0;
2652         } else {
2653                 rx_ctx.dsize = 1;
2654         }
2655
2656         rx_ctx.dtype = vsi->dtype;
2657         if (vsi->dtype) {
2658                 set_ring_ps_enabled(ring);
2659                 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
2660                                   I40E_RX_SPLIT_IP      |
2661                                   I40E_RX_SPLIT_TCP_UDP |
2662                                   I40E_RX_SPLIT_SCTP;
2663         } else {
2664                 rx_ctx.hsplit_0 = 0;
2665         }
2666
2667         rx_ctx.rxmax = min_t(u16, vsi->max_frame,
2668                                   (chain_len * ring->rx_buf_len));
2669         if (hw->revision_id == 0)
2670                 rx_ctx.lrxqthresh = 0;
2671         else
2672                 rx_ctx.lrxqthresh = 2;
2673         rx_ctx.crcstrip = 1;
2674         rx_ctx.l2tsel = 1;
2675         rx_ctx.showiv = 1;
2676 #ifdef I40E_FCOE
2677         rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2678 #endif
2679         /* set the prefena field to 1 because the manual says to */
2680         rx_ctx.prefena = 1;
2681
2682         /* clear the context in the HMC */
2683         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2684         if (err) {
2685                 dev_info(&vsi->back->pdev->dev,
2686                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2687                          ring->queue_index, pf_q, err);
2688                 return -ENOMEM;
2689         }
2690
2691         /* set the context in the HMC */
2692         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2693         if (err) {
2694                 dev_info(&vsi->back->pdev->dev,
2695                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2696                          ring->queue_index, pf_q, err);
2697                 return -ENOMEM;
2698         }
2699
2700         /* cache tail for quicker writes, and clear the reg before use */
2701         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2702         writel(0, ring->tail);
2703
2704         if (ring_is_ps_enabled(ring)) {
2705                 i40e_alloc_rx_headers(ring);
2706                 i40e_alloc_rx_buffers_ps(ring, I40E_DESC_UNUSED(ring));
2707         } else {
2708                 i40e_alloc_rx_buffers_1buf(ring, I40E_DESC_UNUSED(ring));
2709         }
2710
2711         return 0;
2712 }
2713
2714 /**
2715  * i40e_vsi_configure_tx - Configure the VSI for Tx
2716  * @vsi: VSI structure describing this set of rings and resources
2717  *
2718  * Configure the Tx VSI for operation.
2719  **/
2720 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2721 {
2722         int err = 0;
2723         u16 i;
2724
2725         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2726                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2727
2728         return err;
2729 }
2730
2731 /**
2732  * i40e_vsi_configure_rx - Configure the VSI for Rx
2733  * @vsi: the VSI being configured
2734  *
2735  * Configure the Rx VSI for operation.
2736  **/
2737 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2738 {
2739         int err = 0;
2740         u16 i;
2741
2742         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2743                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2744                                + ETH_FCS_LEN + VLAN_HLEN;
2745         else
2746                 vsi->max_frame = I40E_RXBUFFER_2048;
2747
2748         /* figure out correct receive buffer length */
2749         switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2750                                     I40E_FLAG_RX_PS_ENABLED)) {
2751         case I40E_FLAG_RX_1BUF_ENABLED:
2752                 vsi->rx_hdr_len = 0;
2753                 vsi->rx_buf_len = vsi->max_frame;
2754                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2755                 break;
2756         case I40E_FLAG_RX_PS_ENABLED:
2757                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2758                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2759                 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2760                 break;
2761         default:
2762                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2763                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2764                 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2765                 break;
2766         }
2767
2768 #ifdef I40E_FCOE
2769         /* setup rx buffer for FCoE */
2770         if ((vsi->type == I40E_VSI_FCOE) &&
2771             (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
2772                 vsi->rx_hdr_len = 0;
2773                 vsi->rx_buf_len = I40E_RXBUFFER_3072;
2774                 vsi->max_frame = I40E_RXBUFFER_3072;
2775                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2776         }
2777
2778 #endif /* I40E_FCOE */
2779         /* round up for the chip's needs */
2780         vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
2781                                 BIT_ULL(I40E_RXQ_CTX_HBUFF_SHIFT));
2782         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2783                                 BIT_ULL(I40E_RXQ_CTX_DBUFF_SHIFT));
2784
2785         /* set up individual rings */
2786         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2787                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
2788
2789         return err;
2790 }
2791
2792 /**
2793  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
2794  * @vsi: ptr to the VSI
2795  **/
2796 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
2797 {
2798         struct i40e_ring *tx_ring, *rx_ring;
2799         u16 qoffset, qcount;
2800         int i, n;
2801
2802         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
2803                 /* Reset the TC information */
2804                 for (i = 0; i < vsi->num_queue_pairs; i++) {
2805                         rx_ring = vsi->rx_rings[i];
2806                         tx_ring = vsi->tx_rings[i];
2807                         rx_ring->dcb_tc = 0;
2808                         tx_ring->dcb_tc = 0;
2809                 }
2810         }
2811
2812         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
2813                 if (!(vsi->tc_config.enabled_tc & BIT_ULL(n)))
2814                         continue;
2815
2816                 qoffset = vsi->tc_config.tc_info[n].qoffset;
2817                 qcount = vsi->tc_config.tc_info[n].qcount;
2818                 for (i = qoffset; i < (qoffset + qcount); i++) {
2819                         rx_ring = vsi->rx_rings[i];
2820                         tx_ring = vsi->tx_rings[i];
2821                         rx_ring->dcb_tc = n;
2822                         tx_ring->dcb_tc = n;
2823                 }
2824         }
2825 }
2826
2827 /**
2828  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
2829  * @vsi: ptr to the VSI
2830  **/
2831 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
2832 {
2833         if (vsi->netdev)
2834                 i40e_set_rx_mode(vsi->netdev);
2835 }
2836
2837 /**
2838  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
2839  * @vsi: Pointer to the targeted VSI
2840  *
2841  * This function replays the hlist on the hw where all the SB Flow Director
2842  * filters were saved.
2843  **/
2844 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
2845 {
2846         struct i40e_fdir_filter *filter;
2847         struct i40e_pf *pf = vsi->back;
2848         struct hlist_node *node;
2849
2850         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
2851                 return;
2852
2853         hlist_for_each_entry_safe(filter, node,
2854                                   &pf->fdir_filter_list, fdir_node) {
2855                 i40e_add_del_fdir(vsi, filter, true);
2856         }
2857 }
2858
2859 /**
2860  * i40e_vsi_configure - Set up the VSI for action
2861  * @vsi: the VSI being configured
2862  **/
2863 static int i40e_vsi_configure(struct i40e_vsi *vsi)
2864 {
2865         int err;
2866
2867         i40e_set_vsi_rx_mode(vsi);
2868         i40e_restore_vlan(vsi);
2869         i40e_vsi_config_dcb_rings(vsi);
2870         err = i40e_vsi_configure_tx(vsi);
2871         if (!err)
2872                 err = i40e_vsi_configure_rx(vsi);
2873
2874         return err;
2875 }
2876
2877 /**
2878  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
2879  * @vsi: the VSI being configured
2880  **/
2881 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
2882 {
2883         struct i40e_pf *pf = vsi->back;
2884         struct i40e_q_vector *q_vector;
2885         struct i40e_hw *hw = &pf->hw;
2886         u16 vector;
2887         int i, q;
2888         u32 val;
2889         u32 qp;
2890
2891         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
2892          * and PFINT_LNKLSTn registers, e.g.:
2893          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
2894          */
2895         qp = vsi->base_queue;
2896         vector = vsi->base_vector;
2897         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
2898                 q_vector = vsi->q_vectors[i];
2899                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2900                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
2901                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
2902                      q_vector->rx.itr);
2903                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2904                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
2905                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
2906                      q_vector->tx.itr);
2907
2908                 /* Linked list for the queuepairs assigned to this vector */
2909                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
2910                 for (q = 0; q < q_vector->num_ringpairs; q++) {
2911                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
2912                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
2913                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
2914                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
2915                               (I40E_QUEUE_TYPE_TX
2916                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
2917
2918                         wr32(hw, I40E_QINT_RQCTL(qp), val);
2919
2920                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
2921                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
2922                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
2923                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
2924                               (I40E_QUEUE_TYPE_RX
2925                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2926
2927                         /* Terminate the linked list */
2928                         if (q == (q_vector->num_ringpairs - 1))
2929                                 val |= (I40E_QUEUE_END_OF_LIST
2930                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2931
2932                         wr32(hw, I40E_QINT_TQCTL(qp), val);
2933                         qp++;
2934                 }
2935         }
2936
2937         i40e_flush(hw);
2938 }
2939
2940 /**
2941  * i40e_enable_misc_int_causes - enable the non-queue interrupts
2942  * @hw: ptr to the hardware info
2943  **/
2944 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
2945 {
2946         struct i40e_hw *hw = &pf->hw;
2947         u32 val;
2948
2949         /* clear things first */
2950         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
2951         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
2952
2953         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
2954               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
2955               I40E_PFINT_ICR0_ENA_GRST_MASK          |
2956               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
2957               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
2958               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
2959               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
2960               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
2961
2962         if (pf->flags & I40E_FLAG_IWARP_ENABLED)
2963                 val |= I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
2964
2965         if (pf->flags & I40E_FLAG_PTP)
2966                 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
2967
2968         wr32(hw, I40E_PFINT_ICR0_ENA, val);
2969
2970         /* SW_ITR_IDX = 0, but don't change INTENA */
2971         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
2972                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
2973
2974         /* OTHER_ITR_IDX = 0 */
2975         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
2976 }
2977
2978 /**
2979  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
2980  * @vsi: the VSI being configured
2981  **/
2982 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
2983 {
2984         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
2985         struct i40e_pf *pf = vsi->back;
2986         struct i40e_hw *hw = &pf->hw;
2987         u32 val;
2988
2989         /* set the ITR configuration */
2990         q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2991         q_vector->rx.latency_range = I40E_LOW_LATENCY;
2992         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
2993         q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2994         q_vector->tx.latency_range = I40E_LOW_LATENCY;
2995         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
2996
2997         i40e_enable_misc_int_causes(pf);
2998
2999         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
3000         wr32(hw, I40E_PFINT_LNKLST0, 0);
3001
3002         /* Associate the queue pair to the vector and enable the queue int */
3003         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
3004               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
3005               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3006
3007         wr32(hw, I40E_QINT_RQCTL(0), val);
3008
3009         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
3010               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3011               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3012
3013         wr32(hw, I40E_QINT_TQCTL(0), val);
3014         i40e_flush(hw);
3015 }
3016
3017 /**
3018  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
3019  * @pf: board private structure
3020  **/
3021 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
3022 {
3023         struct i40e_hw *hw = &pf->hw;
3024
3025         wr32(hw, I40E_PFINT_DYN_CTL0,
3026              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
3027         i40e_flush(hw);
3028 }
3029
3030 /**
3031  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
3032  * @pf: board private structure
3033  **/
3034 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
3035 {
3036         struct i40e_hw *hw = &pf->hw;
3037         u32 val;
3038
3039         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
3040               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
3041               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
3042
3043         wr32(hw, I40E_PFINT_DYN_CTL0, val);
3044         i40e_flush(hw);
3045 }
3046
3047 /**
3048  * i40e_irq_dynamic_enable - Enable default interrupt generation settings
3049  * @vsi: pointer to a vsi
3050  * @vector: enable a particular Hw Interrupt vector
3051  **/
3052 void i40e_irq_dynamic_enable(struct i40e_vsi *vsi, int vector)
3053 {
3054         struct i40e_pf *pf = vsi->back;
3055         struct i40e_hw *hw = &pf->hw;
3056         u32 val;
3057
3058         val = I40E_PFINT_DYN_CTLN_INTENA_MASK |
3059               I40E_PFINT_DYN_CTLN_CLEARPBA_MASK |
3060               (I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
3061         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
3062         /* skip the flush */
3063 }
3064
3065 /**
3066  * i40e_irq_dynamic_disable - Disable default interrupt generation settings
3067  * @vsi: pointer to a vsi
3068  * @vector: disable a particular Hw Interrupt vector
3069  **/
3070 void i40e_irq_dynamic_disable(struct i40e_vsi *vsi, int vector)
3071 {
3072         struct i40e_pf *pf = vsi->back;
3073         struct i40e_hw *hw = &pf->hw;
3074         u32 val;
3075
3076         val = I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT;
3077         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
3078         i40e_flush(hw);
3079 }
3080
3081 /**
3082  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
3083  * @irq: interrupt number
3084  * @data: pointer to a q_vector
3085  **/
3086 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
3087 {
3088         struct i40e_q_vector *q_vector = data;
3089
3090         if (!q_vector->tx.ring && !q_vector->rx.ring)
3091                 return IRQ_HANDLED;
3092
3093         napi_schedule(&q_vector->napi);
3094
3095         return IRQ_HANDLED;
3096 }
3097
3098 /**
3099  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
3100  * @vsi: the VSI being configured
3101  * @basename: name for the vector
3102  *
3103  * Allocates MSI-X vectors and requests interrupts from the kernel.
3104  **/
3105 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
3106 {
3107         int q_vectors = vsi->num_q_vectors;
3108         struct i40e_pf *pf = vsi->back;
3109         int base = vsi->base_vector;
3110         int rx_int_idx = 0;
3111         int tx_int_idx = 0;
3112         int vector, err;
3113
3114         for (vector = 0; vector < q_vectors; vector++) {
3115                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
3116
3117                 if (q_vector->tx.ring && q_vector->rx.ring) {
3118                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3119                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
3120                         tx_int_idx++;
3121                 } else if (q_vector->rx.ring) {
3122                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3123                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
3124                 } else if (q_vector->tx.ring) {
3125                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3126                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
3127                 } else {
3128                         /* skip this unused q_vector */
3129                         continue;
3130                 }
3131                 err = request_irq(pf->msix_entries[base + vector].vector,
3132                                   vsi->irq_handler,
3133                                   0,
3134                                   q_vector->name,
3135                                   q_vector);
3136                 if (err) {
3137                         dev_info(&pf->pdev->dev,
3138                                  "%s: request_irq failed, error: %d\n",
3139                                  __func__, err);
3140                         goto free_queue_irqs;
3141                 }
3142                 /* assign the mask for this irq */
3143                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3144                                       &q_vector->affinity_mask);
3145         }
3146
3147         vsi->irqs_ready = true;
3148         return 0;
3149
3150 free_queue_irqs:
3151         while (vector) {
3152                 vector--;
3153                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3154                                       NULL);
3155                 free_irq(pf->msix_entries[base + vector].vector,
3156                          &(vsi->q_vectors[vector]));
3157         }
3158         return err;
3159 }
3160
3161 /**
3162  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3163  * @vsi: the VSI being un-configured
3164  **/
3165 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3166 {
3167         struct i40e_pf *pf = vsi->back;
3168         struct i40e_hw *hw = &pf->hw;
3169         int base = vsi->base_vector;
3170         int i;
3171
3172         for (i = 0; i < vsi->num_queue_pairs; i++) {
3173                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3174                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3175         }
3176
3177         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3178                 for (i = vsi->base_vector;
3179                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3180                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3181
3182                 i40e_flush(hw);
3183                 for (i = 0; i < vsi->num_q_vectors; i++)
3184                         synchronize_irq(pf->msix_entries[i + base].vector);
3185         } else {
3186                 /* Legacy and MSI mode - this stops all interrupt handling */
3187                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3188                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3189                 i40e_flush(hw);
3190                 synchronize_irq(pf->pdev->irq);
3191         }
3192 }
3193
3194 /**
3195  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3196  * @vsi: the VSI being configured
3197  **/
3198 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3199 {
3200         struct i40e_pf *pf = vsi->back;
3201         int i;
3202
3203         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3204                 for (i = vsi->base_vector;
3205                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3206                         i40e_irq_dynamic_enable(vsi, i);
3207         } else {
3208                 i40e_irq_dynamic_enable_icr0(pf);
3209         }
3210
3211         i40e_flush(&pf->hw);
3212         return 0;
3213 }
3214
3215 /**
3216  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3217  * @pf: board private structure
3218  **/
3219 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3220 {
3221         /* Disable ICR 0 */
3222         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3223         i40e_flush(&pf->hw);
3224 }
3225
3226 /**
3227  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3228  * @irq: interrupt number
3229  * @data: pointer to a q_vector
3230  *
3231  * This is the handler used for all MSI/Legacy interrupts, and deals
3232  * with both queue and non-queue interrupts.  This is also used in
3233  * MSIX mode to handle the non-queue interrupts.
3234  **/
3235 static irqreturn_t i40e_intr(int irq, void *data)
3236 {
3237         struct i40e_pf *pf = (struct i40e_pf *)data;
3238         struct i40e_hw *hw = &pf->hw;
3239         irqreturn_t ret = IRQ_NONE;
3240         u32 icr0, icr0_remaining;
3241         u32 val, ena_mask;
3242
3243         icr0 = rd32(hw, I40E_PFINT_ICR0);
3244         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3245
3246         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3247         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3248                 goto enable_intr;
3249
3250         /* if interrupt but no bits showing, must be SWINT */
3251         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3252             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3253                 pf->sw_int_count++;
3254
3255         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
3256             (ena_mask & I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK)) {
3257                 ena_mask &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3258                 icr0 &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3259                 dev_info(&pf->pdev->dev, "cleared PE_CRITERR\n");
3260         }
3261
3262         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3263         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3264
3265                 /* temporarily disable queue cause for NAPI processing */
3266                 u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
3267                 qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
3268                 wr32(hw, I40E_QINT_RQCTL(0), qval);
3269
3270                 qval = rd32(hw, I40E_QINT_TQCTL(0));
3271                 qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
3272                 wr32(hw, I40E_QINT_TQCTL(0), qval);
3273
3274                 if (!test_bit(__I40E_DOWN, &pf->state))
3275                         napi_schedule(&pf->vsi[pf->lan_vsi]->q_vectors[0]->napi);
3276         }
3277
3278         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3279                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3280                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3281         }
3282
3283         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3284                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3285                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3286         }
3287
3288         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3289                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3290                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3291         }
3292
3293         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3294                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3295                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3296                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3297                 val = rd32(hw, I40E_GLGEN_RSTAT);
3298                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3299                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3300                 if (val == I40E_RESET_CORER) {
3301                         pf->corer_count++;
3302                 } else if (val == I40E_RESET_GLOBR) {
3303                         pf->globr_count++;
3304                 } else if (val == I40E_RESET_EMPR) {
3305                         pf->empr_count++;
3306                         set_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state);
3307                 }
3308         }
3309
3310         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3311                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3312                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3313                 dev_info(&pf->pdev->dev, "HMC error info 0x%x, HMC error data 0x%x\n",
3314                          rd32(hw, I40E_PFHMC_ERRORINFO),
3315                          rd32(hw, I40E_PFHMC_ERRORDATA));
3316         }
3317
3318         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3319                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3320
3321                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3322                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3323                         i40e_ptp_tx_hwtstamp(pf);
3324                 }
3325         }
3326
3327         /* If a critical error is pending we have no choice but to reset the
3328          * device.
3329          * Report and mask out any remaining unexpected interrupts.
3330          */
3331         icr0_remaining = icr0 & ena_mask;
3332         if (icr0_remaining) {
3333                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3334                          icr0_remaining);
3335                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3336                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3337                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3338                         dev_info(&pf->pdev->dev, "device will be reset\n");
3339                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3340                         i40e_service_event_schedule(pf);
3341                 }
3342                 ena_mask &= ~icr0_remaining;
3343         }
3344         ret = IRQ_HANDLED;
3345
3346 enable_intr:
3347         /* re-enable interrupt causes */
3348         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3349         if (!test_bit(__I40E_DOWN, &pf->state)) {
3350                 i40e_service_event_schedule(pf);
3351                 i40e_irq_dynamic_enable_icr0(pf);
3352         }
3353
3354         return ret;
3355 }
3356
3357 /**
3358  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3359  * @tx_ring:  tx ring to clean
3360  * @budget:   how many cleans we're allowed
3361  *
3362  * Returns true if there's any budget left (e.g. the clean is finished)
3363  **/
3364 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3365 {
3366         struct i40e_vsi *vsi = tx_ring->vsi;
3367         u16 i = tx_ring->next_to_clean;
3368         struct i40e_tx_buffer *tx_buf;
3369         struct i40e_tx_desc *tx_desc;
3370
3371         tx_buf = &tx_ring->tx_bi[i];
3372         tx_desc = I40E_TX_DESC(tx_ring, i);
3373         i -= tx_ring->count;
3374
3375         do {
3376                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3377
3378                 /* if next_to_watch is not set then there is no work pending */
3379                 if (!eop_desc)
3380                         break;
3381
3382                 /* prevent any other reads prior to eop_desc */
3383                 read_barrier_depends();
3384
3385                 /* if the descriptor isn't done, no work yet to do */
3386                 if (!(eop_desc->cmd_type_offset_bsz &
3387                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3388                         break;
3389
3390                 /* clear next_to_watch to prevent false hangs */
3391                 tx_buf->next_to_watch = NULL;
3392
3393                 tx_desc->buffer_addr = 0;
3394                 tx_desc->cmd_type_offset_bsz = 0;
3395                 /* move past filter desc */
3396                 tx_buf++;
3397                 tx_desc++;
3398                 i++;
3399                 if (unlikely(!i)) {
3400                         i -= tx_ring->count;
3401                         tx_buf = tx_ring->tx_bi;
3402                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3403                 }
3404                 /* unmap skb header data */
3405                 dma_unmap_single(tx_ring->dev,
3406                                  dma_unmap_addr(tx_buf, dma),
3407                                  dma_unmap_len(tx_buf, len),
3408                                  DMA_TO_DEVICE);
3409                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3410                         kfree(tx_buf->raw_buf);
3411
3412                 tx_buf->raw_buf = NULL;
3413                 tx_buf->tx_flags = 0;
3414                 tx_buf->next_to_watch = NULL;
3415                 dma_unmap_len_set(tx_buf, len, 0);
3416                 tx_desc->buffer_addr = 0;
3417                 tx_desc->cmd_type_offset_bsz = 0;
3418
3419                 /* move us past the eop_desc for start of next FD desc */
3420                 tx_buf++;
3421                 tx_desc++;
3422                 i++;
3423                 if (unlikely(!i)) {
3424                         i -= tx_ring->count;
3425                         tx_buf = tx_ring->tx_bi;
3426                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3427                 }
3428
3429                 /* update budget accounting */
3430                 budget--;
3431         } while (likely(budget));
3432
3433         i += tx_ring->count;
3434         tx_ring->next_to_clean = i;
3435
3436         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED) {
3437                 i40e_irq_dynamic_enable(vsi,
3438                                 tx_ring->q_vector->v_idx + vsi->base_vector);
3439         }
3440         return budget > 0;
3441 }
3442
3443 /**
3444  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3445  * @irq: interrupt number
3446  * @data: pointer to a q_vector
3447  **/
3448 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3449 {
3450         struct i40e_q_vector *q_vector = data;
3451         struct i40e_vsi *vsi;
3452
3453         if (!q_vector->tx.ring)
3454                 return IRQ_HANDLED;
3455
3456         vsi = q_vector->tx.ring->vsi;
3457         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3458
3459         return IRQ_HANDLED;
3460 }
3461
3462 /**
3463  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3464  * @vsi: the VSI being configured
3465  * @v_idx: vector index
3466  * @qp_idx: queue pair index
3467  **/
3468 static void i40e_map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3469 {
3470         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3471         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3472         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3473
3474         tx_ring->q_vector = q_vector;
3475         tx_ring->next = q_vector->tx.ring;
3476         q_vector->tx.ring = tx_ring;
3477         q_vector->tx.count++;
3478
3479         rx_ring->q_vector = q_vector;
3480         rx_ring->next = q_vector->rx.ring;
3481         q_vector->rx.ring = rx_ring;
3482         q_vector->rx.count++;
3483 }
3484
3485 /**
3486  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3487  * @vsi: the VSI being configured
3488  *
3489  * This function maps descriptor rings to the queue-specific vectors
3490  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3491  * one vector per queue pair, but on a constrained vector budget, we
3492  * group the queue pairs as "efficiently" as possible.
3493  **/
3494 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3495 {
3496         int qp_remaining = vsi->num_queue_pairs;
3497         int q_vectors = vsi->num_q_vectors;
3498         int num_ringpairs;
3499         int v_start = 0;
3500         int qp_idx = 0;
3501
3502         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3503          * group them so there are multiple queues per vector.
3504          * It is also important to go through all the vectors available to be
3505          * sure that if we don't use all the vectors, that the remaining vectors
3506          * are cleared. This is especially important when decreasing the
3507          * number of queues in use.
3508          */
3509         for (; v_start < q_vectors; v_start++) {
3510                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3511
3512                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3513
3514                 q_vector->num_ringpairs = num_ringpairs;
3515
3516                 q_vector->rx.count = 0;
3517                 q_vector->tx.count = 0;
3518                 q_vector->rx.ring = NULL;
3519                 q_vector->tx.ring = NULL;
3520
3521                 while (num_ringpairs--) {
3522                         i40e_map_vector_to_qp(vsi, v_start, qp_idx);
3523                         qp_idx++;
3524                         qp_remaining--;
3525                 }
3526         }
3527 }
3528
3529 /**
3530  * i40e_vsi_request_irq - Request IRQ from the OS
3531  * @vsi: the VSI being configured
3532  * @basename: name for the vector
3533  **/
3534 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3535 {
3536         struct i40e_pf *pf = vsi->back;
3537         int err;
3538
3539         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3540                 err = i40e_vsi_request_irq_msix(vsi, basename);
3541         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3542                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3543                                   pf->int_name, pf);
3544         else
3545                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3546                                   pf->int_name, pf);
3547
3548         if (err)
3549                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3550
3551         return err;
3552 }
3553
3554 #ifdef CONFIG_NET_POLL_CONTROLLER
3555 /**
3556  * i40e_netpoll - A Polling 'interrupt'handler
3557  * @netdev: network interface device structure
3558  *
3559  * This is used by netconsole to send skbs without having to re-enable
3560  * interrupts.  It's not called while the normal interrupt routine is executing.
3561  **/
3562 #ifdef I40E_FCOE
3563 void i40e_netpoll(struct net_device *netdev)
3564 #else
3565 static void i40e_netpoll(struct net_device *netdev)
3566 #endif
3567 {
3568         struct i40e_netdev_priv *np = netdev_priv(netdev);
3569         struct i40e_vsi *vsi = np->vsi;
3570         struct i40e_pf *pf = vsi->back;
3571         int i;
3572
3573         /* if interface is down do nothing */
3574         if (test_bit(__I40E_DOWN, &vsi->state))
3575                 return;
3576
3577         pf->flags |= I40E_FLAG_IN_NETPOLL;
3578         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3579                 for (i = 0; i < vsi->num_q_vectors; i++)
3580                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3581         } else {
3582                 i40e_intr(pf->pdev->irq, netdev);
3583         }
3584         pf->flags &= ~I40E_FLAG_IN_NETPOLL;
3585 }
3586 #endif
3587
3588 /**
3589  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3590  * @pf: the PF being configured
3591  * @pf_q: the PF queue
3592  * @enable: enable or disable state of the queue
3593  *
3594  * This routine will wait for the given Tx queue of the PF to reach the
3595  * enabled or disabled state.
3596  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3597  * multiple retries; else will return 0 in case of success.
3598  **/
3599 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3600 {
3601         int i;
3602         u32 tx_reg;
3603
3604         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3605                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3606                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3607                         break;
3608
3609                 usleep_range(10, 20);
3610         }
3611         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3612                 return -ETIMEDOUT;
3613
3614         return 0;
3615 }
3616
3617 /**
3618  * i40e_vsi_control_tx - Start or stop a VSI's rings
3619  * @vsi: the VSI being configured
3620  * @enable: start or stop the rings
3621  **/
3622 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3623 {
3624         struct i40e_pf *pf = vsi->back;
3625         struct i40e_hw *hw = &pf->hw;
3626         int i, j, pf_q, ret = 0;
3627         u32 tx_reg;
3628
3629         pf_q = vsi->base_queue;
3630         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3631
3632                 /* warn the TX unit of coming changes */
3633                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3634                 if (!enable)
3635                         usleep_range(10, 20);
3636
3637                 for (j = 0; j < 50; j++) {
3638                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3639                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3640                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3641                                 break;
3642                         usleep_range(1000, 2000);
3643                 }
3644                 /* Skip if the queue is already in the requested state */
3645                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3646                         continue;
3647
3648                 /* turn on/off the queue */
3649                 if (enable) {
3650                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3651                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3652                 } else {
3653                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3654                 }
3655
3656                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3657                 /* No waiting for the Tx queue to disable */
3658                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3659                         continue;
3660
3661                 /* wait for the change to finish */
3662                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3663                 if (ret) {
3664                         dev_info(&pf->pdev->dev,
3665                                  "%s: VSI seid %d Tx ring %d %sable timeout\n",
3666                                  __func__, vsi->seid, pf_q,
3667                                  (enable ? "en" : "dis"));
3668                         break;
3669                 }
3670         }
3671
3672         if (hw->revision_id == 0)
3673                 mdelay(50);
3674         return ret;
3675 }
3676
3677 /**
3678  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
3679  * @pf: the PF being configured
3680  * @pf_q: the PF queue
3681  * @enable: enable or disable state of the queue
3682  *
3683  * This routine will wait for the given Rx queue of the PF to reach the
3684  * enabled or disabled state.
3685  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3686  * multiple retries; else will return 0 in case of success.
3687  **/
3688 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3689 {
3690         int i;
3691         u32 rx_reg;
3692
3693         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3694                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
3695                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3696                         break;
3697
3698                 usleep_range(10, 20);
3699         }
3700         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3701                 return -ETIMEDOUT;
3702
3703         return 0;
3704 }
3705
3706 /**
3707  * i40e_vsi_control_rx - Start or stop a VSI's rings
3708  * @vsi: the VSI being configured
3709  * @enable: start or stop the rings
3710  **/
3711 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3712 {
3713         struct i40e_pf *pf = vsi->back;
3714         struct i40e_hw *hw = &pf->hw;
3715         int i, j, pf_q, ret = 0;
3716         u32 rx_reg;
3717
3718         pf_q = vsi->base_queue;
3719         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3720                 for (j = 0; j < 50; j++) {
3721                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3722                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3723                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3724                                 break;
3725                         usleep_range(1000, 2000);
3726                 }
3727
3728                 /* Skip if the queue is already in the requested state */
3729                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3730                         continue;
3731
3732                 /* turn on/off the queue */
3733                 if (enable)
3734                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3735                 else
3736                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3737                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3738
3739                 /* wait for the change to finish */
3740                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
3741                 if (ret) {
3742                         dev_info(&pf->pdev->dev,
3743                                  "%s: VSI seid %d Rx ring %d %sable timeout\n",
3744                                  __func__, vsi->seid, pf_q,
3745                                  (enable ? "en" : "dis"));
3746                         break;
3747                 }
3748         }
3749
3750         return ret;
3751 }
3752
3753 /**
3754  * i40e_vsi_control_rings - Start or stop a VSI's rings
3755  * @vsi: the VSI being configured
3756  * @enable: start or stop the rings
3757  **/
3758 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3759 {
3760         int ret = 0;
3761
3762         /* do rx first for enable and last for disable */
3763         if (request) {
3764                 ret = i40e_vsi_control_rx(vsi, request);
3765                 if (ret)
3766                         return ret;
3767                 ret = i40e_vsi_control_tx(vsi, request);
3768         } else {
3769                 /* Ignore return value, we need to shutdown whatever we can */
3770                 i40e_vsi_control_tx(vsi, request);
3771                 i40e_vsi_control_rx(vsi, request);
3772         }
3773
3774         return ret;
3775 }
3776
3777 /**
3778  * i40e_vsi_free_irq - Free the irq association with the OS
3779  * @vsi: the VSI being configured
3780  **/
3781 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3782 {
3783         struct i40e_pf *pf = vsi->back;
3784         struct i40e_hw *hw = &pf->hw;
3785         int base = vsi->base_vector;
3786         u32 val, qp;
3787         int i;
3788
3789         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3790                 if (!vsi->q_vectors)
3791                         return;
3792
3793                 if (!vsi->irqs_ready)
3794                         return;
3795
3796                 vsi->irqs_ready = false;
3797                 for (i = 0; i < vsi->num_q_vectors; i++) {
3798                         u16 vector = i + base;
3799
3800                         /* free only the irqs that were actually requested */
3801                         if (!vsi->q_vectors[i] ||
3802                             !vsi->q_vectors[i]->num_ringpairs)
3803                                 continue;
3804
3805                         /* clear the affinity_mask in the IRQ descriptor */
3806                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
3807                                               NULL);
3808                         free_irq(pf->msix_entries[vector].vector,
3809                                  vsi->q_vectors[i]);
3810
3811                         /* Tear down the interrupt queue link list
3812                          *
3813                          * We know that they come in pairs and always
3814                          * the Rx first, then the Tx.  To clear the
3815                          * link list, stick the EOL value into the
3816                          * next_q field of the registers.
3817                          */
3818                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
3819                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3820                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3821                         val |= I40E_QUEUE_END_OF_LIST
3822                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3823                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
3824
3825                         while (qp != I40E_QUEUE_END_OF_LIST) {
3826                                 u32 next;
3827
3828                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3829
3830                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3831                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3832                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3833                                          I40E_QINT_RQCTL_INTEVENT_MASK);
3834
3835                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3836                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3837
3838                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3839
3840                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3841
3842                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
3843                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
3844
3845                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3846                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3847                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3848                                          I40E_QINT_TQCTL_INTEVENT_MASK);
3849
3850                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3851                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3852
3853                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3854                                 qp = next;
3855                         }
3856                 }
3857         } else {
3858                 free_irq(pf->pdev->irq, pf);
3859
3860                 val = rd32(hw, I40E_PFINT_LNKLST0);
3861                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3862                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3863                 val |= I40E_QUEUE_END_OF_LIST
3864                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
3865                 wr32(hw, I40E_PFINT_LNKLST0, val);
3866
3867                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3868                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3869                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3870                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3871                          I40E_QINT_RQCTL_INTEVENT_MASK);
3872
3873                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3874                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3875
3876                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3877
3878                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3879
3880                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3881                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3882                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3883                          I40E_QINT_TQCTL_INTEVENT_MASK);
3884
3885                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3886                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3887
3888                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3889         }
3890 }
3891
3892 /**
3893  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
3894  * @vsi: the VSI being configured
3895  * @v_idx: Index of vector to be freed
3896  *
3897  * This function frees the memory allocated to the q_vector.  In addition if
3898  * NAPI is enabled it will delete any references to the NAPI struct prior
3899  * to freeing the q_vector.
3900  **/
3901 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
3902 {
3903         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3904         struct i40e_ring *ring;
3905
3906         if (!q_vector)
3907                 return;
3908
3909         /* disassociate q_vector from rings */
3910         i40e_for_each_ring(ring, q_vector->tx)
3911                 ring->q_vector = NULL;
3912
3913         i40e_for_each_ring(ring, q_vector->rx)
3914                 ring->q_vector = NULL;
3915
3916         /* only VSI w/ an associated netdev is set up w/ NAPI */
3917         if (vsi->netdev)
3918                 netif_napi_del(&q_vector->napi);
3919
3920         vsi->q_vectors[v_idx] = NULL;
3921
3922         kfree_rcu(q_vector, rcu);
3923 }
3924
3925 /**
3926  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
3927  * @vsi: the VSI being un-configured
3928  *
3929  * This frees the memory allocated to the q_vectors and
3930  * deletes references to the NAPI struct.
3931  **/
3932 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
3933 {
3934         int v_idx;
3935
3936         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
3937                 i40e_free_q_vector(vsi, v_idx);
3938 }
3939
3940 /**
3941  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
3942  * @pf: board private structure
3943  **/
3944 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
3945 {
3946         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
3947         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3948                 pci_disable_msix(pf->pdev);
3949                 kfree(pf->msix_entries);
3950                 pf->msix_entries = NULL;
3951                 kfree(pf->irq_pile);
3952                 pf->irq_pile = NULL;
3953         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
3954                 pci_disable_msi(pf->pdev);
3955         }
3956         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
3957 }
3958
3959 /**
3960  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
3961  * @pf: board private structure
3962  *
3963  * We go through and clear interrupt specific resources and reset the structure
3964  * to pre-load conditions
3965  **/
3966 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
3967 {
3968         int i;
3969
3970         i40e_stop_misc_vector(pf);
3971         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3972                 synchronize_irq(pf->msix_entries[0].vector);
3973                 free_irq(pf->msix_entries[0].vector, pf);
3974         }
3975
3976         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
3977         for (i = 0; i < pf->num_alloc_vsi; i++)
3978                 if (pf->vsi[i])
3979                         i40e_vsi_free_q_vectors(pf->vsi[i]);
3980         i40e_reset_interrupt_capability(pf);
3981 }
3982
3983 /**
3984  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
3985  * @vsi: the VSI being configured
3986  **/
3987 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
3988 {
3989         int q_idx;
3990
3991         if (!vsi->netdev)
3992                 return;
3993
3994         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3995                 napi_enable(&vsi->q_vectors[q_idx]->napi);
3996 }
3997
3998 /**
3999  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
4000  * @vsi: the VSI being configured
4001  **/
4002 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
4003 {
4004         int q_idx;
4005
4006         if (!vsi->netdev)
4007                 return;
4008
4009         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4010                 napi_disable(&vsi->q_vectors[q_idx]->napi);
4011 }
4012
4013 /**
4014  * i40e_vsi_close - Shut down a VSI
4015  * @vsi: the vsi to be quelled
4016  **/
4017 static void i40e_vsi_close(struct i40e_vsi *vsi)
4018 {
4019         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
4020                 i40e_down(vsi);
4021         i40e_vsi_free_irq(vsi);
4022         i40e_vsi_free_tx_resources(vsi);
4023         i40e_vsi_free_rx_resources(vsi);
4024         vsi->current_netdev_flags = 0;
4025 }
4026
4027 /**
4028  * i40e_quiesce_vsi - Pause a given VSI
4029  * @vsi: the VSI being paused
4030  **/
4031 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
4032 {
4033         if (test_bit(__I40E_DOWN, &vsi->state))
4034                 return;
4035
4036         /* No need to disable FCoE VSI when Tx suspended */
4037         if ((test_bit(__I40E_PORT_TX_SUSPENDED, &vsi->back->state)) &&
4038             vsi->type == I40E_VSI_FCOE) {
4039                 dev_dbg(&vsi->back->pdev->dev,
4040                         "%s: VSI seid %d skipping FCoE VSI disable\n",
4041                          __func__, vsi->seid);
4042                 return;
4043         }
4044
4045         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
4046         if (vsi->netdev && netif_running(vsi->netdev)) {
4047                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
4048         } else {
4049                 i40e_vsi_close(vsi);
4050         }
4051 }
4052
4053 /**
4054  * i40e_unquiesce_vsi - Resume a given VSI
4055  * @vsi: the VSI being resumed
4056  **/
4057 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
4058 {
4059         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
4060                 return;
4061
4062         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
4063         if (vsi->netdev && netif_running(vsi->netdev))
4064                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
4065         else
4066                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
4067 }
4068
4069 /**
4070  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
4071  * @pf: the PF
4072  **/
4073 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
4074 {
4075         int v;
4076
4077         for (v = 0; v < pf->num_alloc_vsi; v++) {
4078                 if (pf->vsi[v])
4079                         i40e_quiesce_vsi(pf->vsi[v]);
4080         }
4081 }
4082
4083 /**
4084  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
4085  * @pf: the PF
4086  **/
4087 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
4088 {
4089         int v;
4090
4091         for (v = 0; v < pf->num_alloc_vsi; v++) {
4092                 if (pf->vsi[v])
4093                         i40e_unquiesce_vsi(pf->vsi[v]);
4094         }
4095 }
4096
4097 #ifdef CONFIG_I40E_DCB
4098 /**
4099  * i40e_vsi_wait_txq_disabled - Wait for VSI's queues to be disabled
4100  * @vsi: the VSI being configured
4101  *
4102  * This function waits for the given VSI's Tx queues to be disabled.
4103  **/
4104 static int i40e_vsi_wait_txq_disabled(struct i40e_vsi *vsi)
4105 {
4106         struct i40e_pf *pf = vsi->back;
4107         int i, pf_q, ret;
4108
4109         pf_q = vsi->base_queue;
4110         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4111                 /* Check and wait for the disable status of the queue */
4112                 ret = i40e_pf_txq_wait(pf, pf_q, false);
4113                 if (ret) {
4114                         dev_info(&pf->pdev->dev,
4115                                  "%s: VSI seid %d Tx ring %d disable timeout\n",
4116                                  __func__, vsi->seid, pf_q);
4117                         return ret;
4118                 }
4119         }
4120
4121         return 0;
4122 }
4123
4124 /**
4125  * i40e_pf_wait_txq_disabled - Wait for all queues of PF VSIs to be disabled
4126  * @pf: the PF
4127  *
4128  * This function waits for the Tx queues to be in disabled state for all the
4129  * VSIs that are managed by this PF.
4130  **/
4131 static int i40e_pf_wait_txq_disabled(struct i40e_pf *pf)
4132 {
4133         int v, ret = 0;
4134
4135         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4136                 /* No need to wait for FCoE VSI queues */
4137                 if (pf->vsi[v] && pf->vsi[v]->type != I40E_VSI_FCOE) {
4138                         ret = i40e_vsi_wait_txq_disabled(pf->vsi[v]);
4139                         if (ret)
4140                                 break;
4141                 }
4142         }
4143
4144         return ret;
4145 }
4146
4147 #endif
4148 /**
4149  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
4150  * @pf: pointer to PF
4151  *
4152  * Get TC map for ISCSI PF type that will include iSCSI TC
4153  * and LAN TC.
4154  **/
4155 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
4156 {
4157         struct i40e_dcb_app_priority_table app;
4158         struct i40e_hw *hw = &pf->hw;
4159         u8 enabled_tc = 1; /* TC0 is always enabled */
4160         u8 tc, i;
4161         /* Get the iSCSI APP TLV */
4162         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4163
4164         for (i = 0; i < dcbcfg->numapps; i++) {
4165                 app = dcbcfg->app[i];
4166                 if (app.selector == I40E_APP_SEL_TCPIP &&
4167                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
4168                         tc = dcbcfg->etscfg.prioritytable[app.priority];
4169                         enabled_tc |= BIT_ULL(tc);
4170                         break;
4171                 }
4172         }
4173
4174         return enabled_tc;
4175 }
4176
4177 /**
4178  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
4179  * @dcbcfg: the corresponding DCBx configuration structure
4180  *
4181  * Return the number of TCs from given DCBx configuration
4182  **/
4183 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
4184 {
4185         u8 num_tc = 0;
4186         int i;
4187
4188         /* Scan the ETS Config Priority Table to find
4189          * traffic class enabled for a given priority
4190          * and use the traffic class index to get the
4191          * number of traffic classes enabled
4192          */
4193         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4194                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
4195                         num_tc = dcbcfg->etscfg.prioritytable[i];
4196         }
4197
4198         /* Traffic class index starts from zero so
4199          * increment to return the actual count
4200          */
4201         return num_tc + 1;
4202 }
4203
4204 /**
4205  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
4206  * @dcbcfg: the corresponding DCBx configuration structure
4207  *
4208  * Query the current DCB configuration and return the number of
4209  * traffic classes enabled from the given DCBX config
4210  **/
4211 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
4212 {
4213         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
4214         u8 enabled_tc = 1;
4215         u8 i;
4216
4217         for (i = 0; i < num_tc; i++)
4218                 enabled_tc |= BIT(i);
4219
4220         return enabled_tc;
4221 }
4222
4223 /**
4224  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
4225  * @pf: PF being queried
4226  *
4227  * Return number of traffic classes enabled for the given PF
4228  **/
4229 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
4230 {
4231         struct i40e_hw *hw = &pf->hw;
4232         u8 i, enabled_tc;
4233         u8 num_tc = 0;
4234         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4235
4236         /* If DCB is not enabled then always in single TC */
4237         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4238                 return 1;
4239
4240         /* SFP mode will be enabled for all TCs on port */
4241         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4242                 return i40e_dcb_get_num_tc(dcbcfg);
4243
4244         /* MFP mode return count of enabled TCs for this PF */
4245         if (pf->hw.func_caps.iscsi)
4246                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
4247         else
4248                 return 1; /* Only TC0 */
4249
4250         /* At least have TC0 */
4251         enabled_tc = (enabled_tc ? enabled_tc : 0x1);
4252         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4253                 if (enabled_tc & BIT_ULL(i))
4254                         num_tc++;
4255         }
4256         return num_tc;
4257 }
4258
4259 /**
4260  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
4261  * @pf: PF being queried
4262  *
4263  * Return a bitmap for first enabled traffic class for this PF.
4264  **/
4265 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
4266 {
4267         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
4268         u8 i = 0;
4269
4270         if (!enabled_tc)
4271                 return 0x1; /* TC0 */
4272
4273         /* Find the first enabled TC */
4274         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4275                 if (enabled_tc & BIT_ULL(i))
4276                         break;
4277         }
4278
4279         return BIT(i);
4280 }
4281
4282 /**
4283  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4284  * @pf: PF being queried
4285  *
4286  * Return a bitmap for enabled traffic classes for this PF.
4287  **/
4288 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4289 {
4290         /* If DCB is not enabled for this PF then just return default TC */
4291         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4292                 return i40e_pf_get_default_tc(pf);
4293
4294         /* SFP mode we want PF to be enabled for all TCs */
4295         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4296                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4297
4298         /* MFP enabled and iSCSI PF type */
4299         if (pf->hw.func_caps.iscsi)
4300                 return i40e_get_iscsi_tc_map(pf);
4301         else
4302                 return i40e_pf_get_default_tc(pf);
4303 }
4304
4305 /**
4306  * i40e_vsi_get_bw_info - Query VSI BW Information
4307  * @vsi: the VSI being queried
4308  *
4309  * Returns 0 on success, negative value on failure
4310  **/
4311 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4312 {
4313         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4314         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4315         struct i40e_pf *pf = vsi->back;
4316         struct i40e_hw *hw = &pf->hw;
4317         i40e_status ret;
4318         u32 tc_bw_max;
4319         int i;
4320
4321         /* Get the VSI level BW configuration */
4322         ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4323         if (ret) {
4324                 dev_info(&pf->pdev->dev,
4325                          "couldn't get PF vsi bw config, err %s aq_err %s\n",
4326                          i40e_stat_str(&pf->hw, ret),
4327                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4328                 return -EINVAL;
4329         }
4330
4331         /* Get the VSI level BW configuration per TC */
4332         ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4333                                                NULL);
4334         if (ret) {
4335                 dev_info(&pf->pdev->dev,
4336                          "couldn't get PF vsi ets bw config, err %s aq_err %s\n",
4337                          i40e_stat_str(&pf->hw, ret),
4338                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4339                 return -EINVAL;
4340         }
4341
4342         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4343                 dev_info(&pf->pdev->dev,
4344                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4345                          bw_config.tc_valid_bits,
4346                          bw_ets_config.tc_valid_bits);
4347                 /* Still continuing */
4348         }
4349
4350         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4351         vsi->bw_max_quanta = bw_config.max_bw;
4352         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4353                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4354         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4355                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4356                 vsi->bw_ets_limit_credits[i] =
4357                                         le16_to_cpu(bw_ets_config.credits[i]);
4358                 /* 3 bits out of 4 for each TC */
4359                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4360         }
4361
4362         return 0;
4363 }
4364
4365 /**
4366  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4367  * @vsi: the VSI being configured
4368  * @enabled_tc: TC bitmap
4369  * @bw_credits: BW shared credits per TC
4370  *
4371  * Returns 0 on success, negative value on failure
4372  **/
4373 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4374                                        u8 *bw_share)
4375 {
4376         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4377         i40e_status ret;
4378         int i;
4379
4380         bw_data.tc_valid_bits = enabled_tc;
4381         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4382                 bw_data.tc_bw_credits[i] = bw_share[i];
4383
4384         ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4385                                        NULL);
4386         if (ret) {
4387                 dev_info(&vsi->back->pdev->dev,
4388                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4389                          vsi->back->hw.aq.asq_last_status);
4390                 return -EINVAL;
4391         }
4392
4393         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4394                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4395
4396         return 0;
4397 }
4398
4399 /**
4400  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4401  * @vsi: the VSI being configured
4402  * @enabled_tc: TC map to be enabled
4403  *
4404  **/
4405 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4406 {
4407         struct net_device *netdev = vsi->netdev;
4408         struct i40e_pf *pf = vsi->back;
4409         struct i40e_hw *hw = &pf->hw;
4410         u8 netdev_tc = 0;
4411         int i;
4412         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4413
4414         if (!netdev)
4415                 return;
4416
4417         if (!enabled_tc) {
4418                 netdev_reset_tc(netdev);
4419                 return;
4420         }
4421
4422         /* Set up actual enabled TCs on the VSI */
4423         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4424                 return;
4425
4426         /* set per TC queues for the VSI */
4427         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4428                 /* Only set TC queues for enabled tcs
4429                  *
4430                  * e.g. For a VSI that has TC0 and TC3 enabled the
4431                  * enabled_tc bitmap would be 0x00001001; the driver
4432                  * will set the numtc for netdev as 2 that will be
4433                  * referenced by the netdev layer as TC 0 and 1.
4434                  */
4435                 if (vsi->tc_config.enabled_tc & BIT_ULL(i))
4436                         netdev_set_tc_queue(netdev,
4437                                         vsi->tc_config.tc_info[i].netdev_tc,
4438                                         vsi->tc_config.tc_info[i].qcount,
4439                                         vsi->tc_config.tc_info[i].qoffset);
4440         }
4441
4442         /* Assign UP2TC map for the VSI */
4443         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4444                 /* Get the actual TC# for the UP */
4445                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4446                 /* Get the mapped netdev TC# for the UP */
4447                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4448                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4449         }
4450 }
4451
4452 /**
4453  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4454  * @vsi: the VSI being configured
4455  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4456  **/
4457 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4458                                       struct i40e_vsi_context *ctxt)
4459 {
4460         /* copy just the sections touched not the entire info
4461          * since not all sections are valid as returned by
4462          * update vsi params
4463          */
4464         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4465         memcpy(&vsi->info.queue_mapping,
4466                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4467         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4468                sizeof(vsi->info.tc_mapping));
4469 }
4470
4471 /**
4472  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4473  * @vsi: VSI to be configured
4474  * @enabled_tc: TC bitmap
4475  *
4476  * This configures a particular VSI for TCs that are mapped to the
4477  * given TC bitmap. It uses default bandwidth share for TCs across
4478  * VSIs to configure TC for a particular VSI.
4479  *
4480  * NOTE:
4481  * It is expected that the VSI queues have been quisced before calling
4482  * this function.
4483  **/
4484 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4485 {
4486         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4487         struct i40e_vsi_context ctxt;
4488         int ret = 0;
4489         int i;
4490
4491         /* Check if enabled_tc is same as existing or new TCs */
4492         if (vsi->tc_config.enabled_tc == enabled_tc)
4493                 return ret;
4494
4495         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4496         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4497                 if (enabled_tc & BIT_ULL(i))
4498                         bw_share[i] = 1;
4499         }
4500
4501         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4502         if (ret) {
4503                 dev_info(&vsi->back->pdev->dev,
4504                          "Failed configuring TC map %d for VSI %d\n",
4505                          enabled_tc, vsi->seid);
4506                 goto out;
4507         }
4508
4509         /* Update Queue Pairs Mapping for currently enabled UPs */
4510         ctxt.seid = vsi->seid;
4511         ctxt.pf_num = vsi->back->hw.pf_id;
4512         ctxt.vf_num = 0;
4513         ctxt.uplink_seid = vsi->uplink_seid;
4514         ctxt.info = vsi->info;
4515         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4516
4517         /* Update the VSI after updating the VSI queue-mapping information */
4518         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4519         if (ret) {
4520                 dev_info(&vsi->back->pdev->dev,
4521                          "Update vsi tc config failed, err %s aq_err %s\n",
4522                          i40e_stat_str(&vsi->back->hw, ret),
4523                          i40e_aq_str(&vsi->back->hw,
4524                                      vsi->back->hw.aq.asq_last_status));
4525                 goto out;
4526         }
4527         /* update the local VSI info with updated queue map */
4528         i40e_vsi_update_queue_map(vsi, &ctxt);
4529         vsi->info.valid_sections = 0;
4530
4531         /* Update current VSI BW information */
4532         ret = i40e_vsi_get_bw_info(vsi);
4533         if (ret) {
4534                 dev_info(&vsi->back->pdev->dev,
4535                          "Failed updating vsi bw info, err %s aq_err %s\n",
4536                          i40e_stat_str(&vsi->back->hw, ret),
4537                          i40e_aq_str(&vsi->back->hw,
4538                                      vsi->back->hw.aq.asq_last_status));
4539                 goto out;
4540         }
4541
4542         /* Update the netdev TC setup */
4543         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4544 out:
4545         return ret;
4546 }
4547
4548 /**
4549  * i40e_veb_config_tc - Configure TCs for given VEB
4550  * @veb: given VEB
4551  * @enabled_tc: TC bitmap
4552  *
4553  * Configures given TC bitmap for VEB (switching) element
4554  **/
4555 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4556 {
4557         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4558         struct i40e_pf *pf = veb->pf;
4559         int ret = 0;
4560         int i;
4561
4562         /* No TCs or already enabled TCs just return */
4563         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4564                 return ret;
4565
4566         bw_data.tc_valid_bits = enabled_tc;
4567         /* bw_data.absolute_credits is not set (relative) */
4568
4569         /* Enable ETS TCs with equal BW Share for now */
4570         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4571                 if (enabled_tc & BIT_ULL(i))
4572                         bw_data.tc_bw_share_credits[i] = 1;
4573         }
4574
4575         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4576                                                    &bw_data, NULL);
4577         if (ret) {
4578                 dev_info(&pf->pdev->dev,
4579                          "VEB bw config failed, err %s aq_err %s\n",
4580                          i40e_stat_str(&pf->hw, ret),
4581                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4582                 goto out;
4583         }
4584
4585         /* Update the BW information */
4586         ret = i40e_veb_get_bw_info(veb);
4587         if (ret) {
4588                 dev_info(&pf->pdev->dev,
4589                          "Failed getting veb bw config, err %s aq_err %s\n",
4590                          i40e_stat_str(&pf->hw, ret),
4591                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4592         }
4593
4594 out:
4595         return ret;
4596 }
4597
4598 #ifdef CONFIG_I40E_DCB
4599 /**
4600  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4601  * @pf: PF struct
4602  *
4603  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4604  * the caller would've quiesce all the VSIs before calling
4605  * this function
4606  **/
4607 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4608 {
4609         u8 tc_map = 0;
4610         int ret;
4611         u8 v;
4612
4613         /* Enable the TCs available on PF to all VEBs */
4614         tc_map = i40e_pf_get_tc_map(pf);
4615         for (v = 0; v < I40E_MAX_VEB; v++) {
4616                 if (!pf->veb[v])
4617                         continue;
4618                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4619                 if (ret) {
4620                         dev_info(&pf->pdev->dev,
4621                                  "Failed configuring TC for VEB seid=%d\n",
4622                                  pf->veb[v]->seid);
4623                         /* Will try to configure as many components */
4624                 }
4625         }
4626
4627         /* Update each VSI */
4628         for (v = 0; v < pf->num_alloc_vsi; v++) {
4629                 if (!pf->vsi[v])
4630                         continue;
4631
4632                 /* - Enable all TCs for the LAN VSI
4633 #ifdef I40E_FCOE
4634                  * - For FCoE VSI only enable the TC configured
4635                  *   as per the APP TLV
4636 #endif
4637                  * - For all others keep them at TC0 for now
4638                  */
4639                 if (v == pf->lan_vsi)
4640                         tc_map = i40e_pf_get_tc_map(pf);
4641                 else
4642                         tc_map = i40e_pf_get_default_tc(pf);
4643 #ifdef I40E_FCOE
4644                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
4645                         tc_map = i40e_get_fcoe_tc_map(pf);
4646 #endif /* #ifdef I40E_FCOE */
4647
4648                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4649                 if (ret) {
4650                         dev_info(&pf->pdev->dev,
4651                                  "Failed configuring TC for VSI seid=%d\n",
4652                                  pf->vsi[v]->seid);
4653                         /* Will try to configure as many components */
4654                 } else {
4655                         /* Re-configure VSI vectors based on updated TC map */
4656                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
4657                         if (pf->vsi[v]->netdev)
4658                                 i40e_dcbnl_set_all(pf->vsi[v]);
4659                 }
4660         }
4661 }
4662
4663 /**
4664  * i40e_resume_port_tx - Resume port Tx
4665  * @pf: PF struct
4666  *
4667  * Resume a port's Tx and issue a PF reset in case of failure to
4668  * resume.
4669  **/
4670 static int i40e_resume_port_tx(struct i40e_pf *pf)
4671 {
4672         struct i40e_hw *hw = &pf->hw;
4673         int ret;
4674
4675         ret = i40e_aq_resume_port_tx(hw, NULL);
4676         if (ret) {
4677                 dev_info(&pf->pdev->dev,
4678                          "Resume Port Tx failed, err %s aq_err %s\n",
4679                           i40e_stat_str(&pf->hw, ret),
4680                           i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4681                 /* Schedule PF reset to recover */
4682                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
4683                 i40e_service_event_schedule(pf);
4684         }
4685
4686         return ret;
4687 }
4688
4689 /**
4690  * i40e_init_pf_dcb - Initialize DCB configuration
4691  * @pf: PF being configured
4692  *
4693  * Query the current DCB configuration and cache it
4694  * in the hardware structure
4695  **/
4696 static int i40e_init_pf_dcb(struct i40e_pf *pf)
4697 {
4698         struct i40e_hw *hw = &pf->hw;
4699         int err = 0;
4700
4701         /* Do not enable DCB for SW1 and SW2 images even if the FW is capable */
4702         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
4703             (pf->hw.aq.fw_maj_ver < 4))
4704                 goto out;
4705
4706         /* Get the initial DCB configuration */
4707         err = i40e_init_dcb(hw);
4708         if (!err) {
4709                 /* Device/Function is not DCBX capable */
4710                 if ((!hw->func_caps.dcb) ||
4711                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
4712                         dev_info(&pf->pdev->dev,
4713                                  "DCBX offload is not supported or is disabled for this PF.\n");
4714
4715                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
4716                                 goto out;
4717
4718                 } else {
4719                         /* When status is not DISABLED then DCBX in FW */
4720                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
4721                                        DCB_CAP_DCBX_VER_IEEE;
4722
4723                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
4724                         /* Enable DCB tagging only when more than one TC */
4725                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
4726                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
4727                         dev_dbg(&pf->pdev->dev,
4728                                 "DCBX offload is supported for this PF.\n");
4729                 }
4730         } else {
4731                 dev_info(&pf->pdev->dev,
4732                          "Query for DCB configuration failed, err %s aq_err %s\n",
4733                          i40e_stat_str(&pf->hw, err),
4734                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4735         }
4736
4737 out:
4738         return err;
4739 }
4740 #endif /* CONFIG_I40E_DCB */
4741 #define SPEED_SIZE 14
4742 #define FC_SIZE 8
4743 /**
4744  * i40e_print_link_message - print link up or down
4745  * @vsi: the VSI for which link needs a message
4746  */
4747 static void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
4748 {
4749         char speed[SPEED_SIZE] = "Unknown";
4750         char fc[FC_SIZE] = "RX/TX";
4751
4752         if (!isup) {
4753                 netdev_info(vsi->netdev, "NIC Link is Down\n");
4754                 return;
4755         }
4756
4757         /* Warn user if link speed on NPAR enabled partition is not at
4758          * least 10GB
4759          */
4760         if (vsi->back->hw.func_caps.npar_enable &&
4761             (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
4762              vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
4763                 netdev_warn(vsi->netdev,
4764                             "The partition detected link speed that is less than 10Gbps\n");
4765
4766         switch (vsi->back->hw.phy.link_info.link_speed) {
4767         case I40E_LINK_SPEED_40GB:
4768                 strlcpy(speed, "40 Gbps", SPEED_SIZE);
4769                 break;
4770         case I40E_LINK_SPEED_20GB:
4771                 strncpy(speed, "20 Gbps", SPEED_SIZE);
4772                 break;
4773         case I40E_LINK_SPEED_10GB:
4774                 strlcpy(speed, "10 Gbps", SPEED_SIZE);
4775                 break;
4776         case I40E_LINK_SPEED_1GB:
4777                 strlcpy(speed, "1000 Mbps", SPEED_SIZE);
4778                 break;
4779         case I40E_LINK_SPEED_100MB:
4780                 strncpy(speed, "100 Mbps", SPEED_SIZE);
4781                 break;
4782         default:
4783                 break;
4784         }
4785
4786         switch (vsi->back->hw.fc.current_mode) {
4787         case I40E_FC_FULL:
4788                 strlcpy(fc, "RX/TX", FC_SIZE);
4789                 break;
4790         case I40E_FC_TX_PAUSE:
4791                 strlcpy(fc, "TX", FC_SIZE);
4792                 break;
4793         case I40E_FC_RX_PAUSE:
4794                 strlcpy(fc, "RX", FC_SIZE);
4795                 break;
4796         default:
4797                 strlcpy(fc, "None", FC_SIZE);
4798                 break;
4799         }
4800
4801         netdev_info(vsi->netdev, "NIC Link is Up %s Full Duplex, Flow Control: %s\n",
4802                     speed, fc);
4803 }
4804
4805 /**
4806  * i40e_up_complete - Finish the last steps of bringing up a connection
4807  * @vsi: the VSI being configured
4808  **/
4809 static int i40e_up_complete(struct i40e_vsi *vsi)
4810 {
4811         struct i40e_pf *pf = vsi->back;
4812         int err;
4813
4814         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4815                 i40e_vsi_configure_msix(vsi);
4816         else
4817                 i40e_configure_msi_and_legacy(vsi);
4818
4819         /* start rings */
4820         err = i40e_vsi_control_rings(vsi, true);
4821         if (err)
4822                 return err;
4823
4824         clear_bit(__I40E_DOWN, &vsi->state);
4825         i40e_napi_enable_all(vsi);
4826         i40e_vsi_enable_irq(vsi);
4827
4828         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
4829             (vsi->netdev)) {
4830                 i40e_print_link_message(vsi, true);
4831                 netif_tx_start_all_queues(vsi->netdev);
4832                 netif_carrier_on(vsi->netdev);
4833         } else if (vsi->netdev) {
4834                 i40e_print_link_message(vsi, false);
4835                 /* need to check for qualified module here*/
4836                 if ((pf->hw.phy.link_info.link_info &
4837                         I40E_AQ_MEDIA_AVAILABLE) &&
4838                     (!(pf->hw.phy.link_info.an_info &
4839                         I40E_AQ_QUALIFIED_MODULE)))
4840                         netdev_err(vsi->netdev,
4841                                    "the driver failed to link because an unqualified module was detected.");
4842         }
4843
4844         /* replay FDIR SB filters */
4845         if (vsi->type == I40E_VSI_FDIR) {
4846                 /* reset fd counters */
4847                 pf->fd_add_err = pf->fd_atr_cnt = 0;
4848                 if (pf->fd_tcp_rule > 0) {
4849                         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
4850                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
4851                                 dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
4852                         pf->fd_tcp_rule = 0;
4853                 }
4854                 i40e_fdir_filter_restore(vsi);
4855         }
4856         i40e_service_event_schedule(pf);
4857
4858         return 0;
4859 }
4860
4861 /**
4862  * i40e_vsi_reinit_locked - Reset the VSI
4863  * @vsi: the VSI being configured
4864  *
4865  * Rebuild the ring structs after some configuration
4866  * has changed, e.g. MTU size.
4867  **/
4868 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
4869 {
4870         struct i40e_pf *pf = vsi->back;
4871
4872         WARN_ON(in_interrupt());
4873         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
4874                 usleep_range(1000, 2000);
4875         i40e_down(vsi);
4876
4877         /* Give a VF some time to respond to the reset.  The
4878          * two second wait is based upon the watchdog cycle in
4879          * the VF driver.
4880          */
4881         if (vsi->type == I40E_VSI_SRIOV)
4882                 msleep(2000);
4883         i40e_up(vsi);
4884         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
4885 }
4886
4887 /**
4888  * i40e_up - Bring the connection back up after being down
4889  * @vsi: the VSI being configured
4890  **/
4891 int i40e_up(struct i40e_vsi *vsi)
4892 {
4893         int err;
4894
4895         err = i40e_vsi_configure(vsi);
4896         if (!err)
4897                 err = i40e_up_complete(vsi);
4898
4899         return err;
4900 }
4901
4902 /**
4903  * i40e_down - Shutdown the connection processing
4904  * @vsi: the VSI being stopped
4905  **/
4906 void i40e_down(struct i40e_vsi *vsi)
4907 {
4908         int i;
4909
4910         /* It is assumed that the caller of this function
4911          * sets the vsi->state __I40E_DOWN bit.
4912          */
4913         if (vsi->netdev) {
4914                 netif_carrier_off(vsi->netdev);
4915                 netif_tx_disable(vsi->netdev);
4916         }
4917         i40e_vsi_disable_irq(vsi);
4918         i40e_vsi_control_rings(vsi, false);
4919         i40e_napi_disable_all(vsi);
4920
4921         for (i = 0; i < vsi->num_queue_pairs; i++) {
4922                 i40e_clean_tx_ring(vsi->tx_rings[i]);
4923                 i40e_clean_rx_ring(vsi->rx_rings[i]);
4924         }
4925 }
4926
4927 /**
4928  * i40e_setup_tc - configure multiple traffic classes
4929  * @netdev: net device to configure
4930  * @tc: number of traffic classes to enable
4931  **/
4932 #ifdef I40E_FCOE
4933 int i40e_setup_tc(struct net_device *netdev, u8 tc)
4934 #else
4935 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
4936 #endif
4937 {
4938         struct i40e_netdev_priv *np = netdev_priv(netdev);
4939         struct i40e_vsi *vsi = np->vsi;
4940         struct i40e_pf *pf = vsi->back;
4941         u8 enabled_tc = 0;
4942         int ret = -EINVAL;
4943         int i;
4944
4945         /* Check if DCB enabled to continue */
4946         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
4947                 netdev_info(netdev, "DCB is not enabled for adapter\n");
4948                 goto exit;
4949         }
4950
4951         /* Check if MFP enabled */
4952         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
4953                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
4954                 goto exit;
4955         }
4956
4957         /* Check whether tc count is within enabled limit */
4958         if (tc > i40e_pf_get_num_tc(pf)) {
4959                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
4960                 goto exit;
4961         }
4962
4963         /* Generate TC map for number of tc requested */
4964         for (i = 0; i < tc; i++)
4965                 enabled_tc |= BIT_ULL(i);
4966
4967         /* Requesting same TC configuration as already enabled */
4968         if (enabled_tc == vsi->tc_config.enabled_tc)
4969                 return 0;
4970
4971         /* Quiesce VSI queues */
4972         i40e_quiesce_vsi(vsi);
4973
4974         /* Configure VSI for enabled TCs */
4975         ret = i40e_vsi_config_tc(vsi, enabled_tc);
4976         if (ret) {
4977                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
4978                             vsi->seid);
4979                 goto exit;
4980         }
4981
4982         /* Unquiesce VSI */
4983         i40e_unquiesce_vsi(vsi);
4984
4985 exit:
4986         return ret;
4987 }
4988
4989 /**
4990  * i40e_open - Called when a network interface is made active
4991  * @netdev: network interface device structure
4992  *
4993  * The open entry point is called when a network interface is made
4994  * active by the system (IFF_UP).  At this point all resources needed
4995  * for transmit and receive operations are allocated, the interrupt
4996  * handler is registered with the OS, the netdev watchdog subtask is
4997  * enabled, and the stack is notified that the interface is ready.
4998  *
4999  * Returns 0 on success, negative value on failure
5000  **/
5001 int i40e_open(struct net_device *netdev)
5002 {
5003         struct i40e_netdev_priv *np = netdev_priv(netdev);
5004         struct i40e_vsi *vsi = np->vsi;
5005         struct i40e_pf *pf = vsi->back;
5006         int err;
5007
5008         /* disallow open during test or if eeprom is broken */
5009         if (test_bit(__I40E_TESTING, &pf->state) ||
5010             test_bit(__I40E_BAD_EEPROM, &pf->state))
5011                 return -EBUSY;
5012
5013         netif_carrier_off(netdev);
5014
5015         err = i40e_vsi_open(vsi);
5016         if (err)
5017                 return err;
5018
5019         /* configure global TSO hardware offload settings */
5020         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
5021                                                        TCP_FLAG_FIN) >> 16);
5022         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
5023                                                        TCP_FLAG_FIN |
5024                                                        TCP_FLAG_CWR) >> 16);
5025         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
5026
5027 #ifdef CONFIG_I40E_VXLAN
5028         vxlan_get_rx_port(netdev);
5029 #endif
5030
5031         return 0;
5032 }
5033
5034 /**
5035  * i40e_vsi_open -
5036  * @vsi: the VSI to open
5037  *
5038  * Finish initialization of the VSI.
5039  *
5040  * Returns 0 on success, negative value on failure
5041  **/
5042 int i40e_vsi_open(struct i40e_vsi *vsi)
5043 {
5044         struct i40e_pf *pf = vsi->back;
5045         char int_name[I40E_INT_NAME_STR_LEN];
5046         int err;
5047
5048         /* allocate descriptors */
5049         err = i40e_vsi_setup_tx_resources(vsi);
5050         if (err)
5051                 goto err_setup_tx;
5052         err = i40e_vsi_setup_rx_resources(vsi);
5053         if (err)
5054                 goto err_setup_rx;
5055
5056         err = i40e_vsi_configure(vsi);
5057         if (err)
5058                 goto err_setup_rx;
5059
5060         if (vsi->netdev) {
5061                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
5062                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
5063                 err = i40e_vsi_request_irq(vsi, int_name);
5064                 if (err)
5065                         goto err_setup_rx;
5066
5067                 /* Notify the stack of the actual queue counts. */
5068                 err = netif_set_real_num_tx_queues(vsi->netdev,
5069                                                    vsi->num_queue_pairs);
5070                 if (err)
5071                         goto err_set_queues;
5072
5073                 err = netif_set_real_num_rx_queues(vsi->netdev,
5074                                                    vsi->num_queue_pairs);
5075                 if (err)
5076                         goto err_set_queues;
5077
5078         } else if (vsi->type == I40E_VSI_FDIR) {
5079                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
5080                          dev_driver_string(&pf->pdev->dev),
5081                          dev_name(&pf->pdev->dev));
5082                 err = i40e_vsi_request_irq(vsi, int_name);
5083
5084         } else {
5085                 err = -EINVAL;
5086                 goto err_setup_rx;
5087         }
5088
5089         err = i40e_up_complete(vsi);
5090         if (err)
5091                 goto err_up_complete;
5092
5093         return 0;
5094
5095 err_up_complete:
5096         i40e_down(vsi);
5097 err_set_queues:
5098         i40e_vsi_free_irq(vsi);
5099 err_setup_rx:
5100         i40e_vsi_free_rx_resources(vsi);
5101 err_setup_tx:
5102         i40e_vsi_free_tx_resources(vsi);
5103         if (vsi == pf->vsi[pf->lan_vsi])
5104                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
5105
5106         return err;
5107 }
5108
5109 /**
5110  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
5111  * @pf: Pointer to PF
5112  *
5113  * This function destroys the hlist where all the Flow Director
5114  * filters were saved.
5115  **/
5116 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
5117 {
5118         struct i40e_fdir_filter *filter;
5119         struct hlist_node *node2;
5120
5121         hlist_for_each_entry_safe(filter, node2,
5122                                   &pf->fdir_filter_list, fdir_node) {
5123                 hlist_del(&filter->fdir_node);
5124                 kfree(filter);
5125         }
5126         pf->fdir_pf_active_filters = 0;
5127 }
5128
5129 /**
5130  * i40e_close - Disables a network interface
5131  * @netdev: network interface device structure
5132  *
5133  * The close entry point is called when an interface is de-activated
5134  * by the OS.  The hardware is still under the driver's control, but
5135  * this netdev interface is disabled.
5136  *
5137  * Returns 0, this is not allowed to fail
5138  **/
5139 #ifdef I40E_FCOE
5140 int i40e_close(struct net_device *netdev)
5141 #else
5142 static int i40e_close(struct net_device *netdev)
5143 #endif
5144 {
5145         struct i40e_netdev_priv *np = netdev_priv(netdev);
5146         struct i40e_vsi *vsi = np->vsi;
5147
5148         i40e_vsi_close(vsi);
5149
5150         return 0;
5151 }
5152
5153 /**
5154  * i40e_do_reset - Start a PF or Core Reset sequence
5155  * @pf: board private structure
5156  * @reset_flags: which reset is requested
5157  *
5158  * The essential difference in resets is that the PF Reset
5159  * doesn't clear the packet buffers, doesn't reset the PE
5160  * firmware, and doesn't bother the other PFs on the chip.
5161  **/
5162 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
5163 {
5164         u32 val;
5165
5166         WARN_ON(in_interrupt());
5167
5168         if (i40e_check_asq_alive(&pf->hw))
5169                 i40e_vc_notify_reset(pf);
5170
5171         /* do the biggest reset indicated */
5172         if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {
5173
5174                 /* Request a Global Reset
5175                  *
5176                  * This will start the chip's countdown to the actual full
5177                  * chip reset event, and a warning interrupt to be sent
5178                  * to all PFs, including the requestor.  Our handler
5179                  * for the warning interrupt will deal with the shutdown
5180                  * and recovery of the switch setup.
5181                  */
5182                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
5183                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5184                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
5185                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5186
5187         } else if (reset_flags & BIT_ULL(__I40E_CORE_RESET_REQUESTED)) {
5188
5189                 /* Request a Core Reset
5190                  *
5191                  * Same as Global Reset, except does *not* include the MAC/PHY
5192                  */
5193                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
5194                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5195                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
5196                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5197                 i40e_flush(&pf->hw);
5198
5199         } else if (reset_flags & BIT_ULL(__I40E_PF_RESET_REQUESTED)) {
5200
5201                 /* Request a PF Reset
5202                  *
5203                  * Resets only the PF-specific registers
5204                  *
5205                  * This goes directly to the tear-down and rebuild of
5206                  * the switch, since we need to do all the recovery as
5207                  * for the Core Reset.
5208                  */
5209                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5210                 i40e_handle_reset_warning(pf);
5211
5212         } else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) {
5213                 int v;
5214
5215                 /* Find the VSI(s) that requested a re-init */
5216                 dev_info(&pf->pdev->dev,
5217                          "VSI reinit requested\n");
5218                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5219                         struct i40e_vsi *vsi = pf->vsi[v];
5220                         if (vsi != NULL &&
5221                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5222                                 i40e_vsi_reinit_locked(pf->vsi[v]);
5223                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5224                         }
5225                 }
5226
5227                 /* no further action needed, so return now */
5228                 return;
5229         } else if (reset_flags & BIT_ULL(__I40E_DOWN_REQUESTED)) {
5230                 int v;
5231
5232                 /* Find the VSI(s) that needs to be brought down */
5233                 dev_info(&pf->pdev->dev, "VSI down requested\n");
5234                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5235                         struct i40e_vsi *vsi = pf->vsi[v];
5236                         if (vsi != NULL &&
5237                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5238                                 set_bit(__I40E_DOWN, &vsi->state);
5239                                 i40e_down(vsi);
5240                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5241                         }
5242                 }
5243
5244                 /* no further action needed, so return now */
5245                 return;
5246         } else {
5247                 dev_info(&pf->pdev->dev,
5248                          "bad reset request 0x%08x\n", reset_flags);
5249                 return;
5250         }
5251 }
5252
5253 #ifdef CONFIG_I40E_DCB
5254 /**
5255  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
5256  * @pf: board private structure
5257  * @old_cfg: current DCB config
5258  * @new_cfg: new DCB config
5259  **/
5260 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
5261                             struct i40e_dcbx_config *old_cfg,
5262                             struct i40e_dcbx_config *new_cfg)
5263 {
5264         bool need_reconfig = false;
5265
5266         /* Check if ETS configuration has changed */
5267         if (memcmp(&new_cfg->etscfg,
5268                    &old_cfg->etscfg,
5269                    sizeof(new_cfg->etscfg))) {
5270                 /* If Priority Table has changed reconfig is needed */
5271                 if (memcmp(&new_cfg->etscfg.prioritytable,
5272                            &old_cfg->etscfg.prioritytable,
5273                            sizeof(new_cfg->etscfg.prioritytable))) {
5274                         need_reconfig = true;
5275                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
5276                 }
5277
5278                 if (memcmp(&new_cfg->etscfg.tcbwtable,
5279                            &old_cfg->etscfg.tcbwtable,
5280                            sizeof(new_cfg->etscfg.tcbwtable)))
5281                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5282
5283                 if (memcmp(&new_cfg->etscfg.tsatable,
5284                            &old_cfg->etscfg.tsatable,
5285                            sizeof(new_cfg->etscfg.tsatable)))
5286                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5287         }
5288
5289         /* Check if PFC configuration has changed */
5290         if (memcmp(&new_cfg->pfc,
5291                    &old_cfg->pfc,
5292                    sizeof(new_cfg->pfc))) {
5293                 need_reconfig = true;
5294                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5295         }
5296
5297         /* Check if APP Table has changed */
5298         if (memcmp(&new_cfg->app,
5299                    &old_cfg->app,
5300                    sizeof(new_cfg->app))) {
5301                 need_reconfig = true;
5302                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5303         }
5304
5305         dev_dbg(&pf->pdev->dev, "%s: need_reconfig=%d\n", __func__,
5306                 need_reconfig);
5307         return need_reconfig;
5308 }
5309
5310 /**
5311  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5312  * @pf: board private structure
5313  * @e: event info posted on ARQ
5314  **/
5315 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5316                                   struct i40e_arq_event_info *e)
5317 {
5318         struct i40e_aqc_lldp_get_mib *mib =
5319                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5320         struct i40e_hw *hw = &pf->hw;
5321         struct i40e_dcbx_config tmp_dcbx_cfg;
5322         bool need_reconfig = false;
5323         int ret = 0;
5324         u8 type;
5325
5326         /* Not DCB capable or capability disabled */
5327         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5328                 return ret;
5329
5330         /* Ignore if event is not for Nearest Bridge */
5331         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5332                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5333         dev_dbg(&pf->pdev->dev,
5334                 "%s: LLDP event mib bridge type 0x%x\n", __func__, type);
5335         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5336                 return ret;
5337
5338         /* Check MIB Type and return if event for Remote MIB update */
5339         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5340         dev_dbg(&pf->pdev->dev,
5341                 "%s: LLDP event mib type %s\n", __func__,
5342                 type ? "remote" : "local");
5343         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5344                 /* Update the remote cached instance and return */
5345                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5346                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5347                                 &hw->remote_dcbx_config);
5348                 goto exit;
5349         }
5350
5351         /* Store the old configuration */
5352         tmp_dcbx_cfg = hw->local_dcbx_config;
5353
5354         /* Reset the old DCBx configuration data */
5355         memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
5356         /* Get updated DCBX data from firmware */
5357         ret = i40e_get_dcb_config(&pf->hw);
5358         if (ret) {
5359                 dev_info(&pf->pdev->dev,
5360                          "Failed querying DCB configuration data from firmware, err %s aq_err %s\n",
5361                          i40e_stat_str(&pf->hw, ret),
5362                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5363                 goto exit;
5364         }
5365
5366         /* No change detected in DCBX configs */
5367         if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
5368                     sizeof(tmp_dcbx_cfg))) {
5369                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5370                 goto exit;
5371         }
5372
5373         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
5374                                                &hw->local_dcbx_config);
5375
5376         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
5377
5378         if (!need_reconfig)
5379                 goto exit;
5380
5381         /* Enable DCB tagging only when more than one TC */
5382         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5383                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5384         else
5385                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5386
5387         set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5388         /* Reconfiguration needed quiesce all VSIs */
5389         i40e_pf_quiesce_all_vsi(pf);
5390
5391         /* Changes in configuration update VEB/VSI */
5392         i40e_dcb_reconfigure(pf);
5393
5394         ret = i40e_resume_port_tx(pf);
5395
5396         clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5397         /* In case of error no point in resuming VSIs */
5398         if (ret)
5399                 goto exit;
5400
5401         /* Wait for the PF's Tx queues to be disabled */
5402         ret = i40e_pf_wait_txq_disabled(pf);
5403         if (ret) {
5404                 /* Schedule PF reset to recover */
5405                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5406                 i40e_service_event_schedule(pf);
5407         } else {
5408                 i40e_pf_unquiesce_all_vsi(pf);
5409         }
5410
5411 exit:
5412         return ret;
5413 }
5414 #endif /* CONFIG_I40E_DCB */
5415
5416 /**
5417  * i40e_do_reset_safe - Protected reset path for userland calls.
5418  * @pf: board private structure
5419  * @reset_flags: which reset is requested
5420  *
5421  **/
5422 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5423 {
5424         rtnl_lock();
5425         i40e_do_reset(pf, reset_flags);
5426         rtnl_unlock();
5427 }
5428
5429 /**
5430  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5431  * @pf: board private structure
5432  * @e: event info posted on ARQ
5433  *
5434  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5435  * and VF queues
5436  **/
5437 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5438                                            struct i40e_arq_event_info *e)
5439 {
5440         struct i40e_aqc_lan_overflow *data =
5441                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5442         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5443         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5444         struct i40e_hw *hw = &pf->hw;
5445         struct i40e_vf *vf;
5446         u16 vf_id;
5447
5448         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5449                 queue, qtx_ctl);
5450
5451         /* Queue belongs to VF, find the VF and issue VF reset */
5452         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5453             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5454                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5455                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5456                 vf_id -= hw->func_caps.vf_base_id;
5457                 vf = &pf->vf[vf_id];
5458                 i40e_vc_notify_vf_reset(vf);
5459                 /* Allow VF to process pending reset notification */
5460                 msleep(20);
5461                 i40e_reset_vf(vf, false);
5462         }
5463 }
5464
5465 /**
5466  * i40e_service_event_complete - Finish up the service event
5467  * @pf: board private structure
5468  **/
5469 static void i40e_service_event_complete(struct i40e_pf *pf)
5470 {
5471         BUG_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5472
5473         /* flush memory to make sure state is correct before next watchog */
5474         smp_mb__before_atomic();
5475         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5476 }
5477
5478 /**
5479  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5480  * @pf: board private structure
5481  **/
5482 u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5483 {
5484         u32 val, fcnt_prog;
5485
5486         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5487         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5488         return fcnt_prog;
5489 }
5490
5491 /**
5492  * i40e_get_current_fd_count - Get total FD filters programmed for this PF
5493  * @pf: board private structure
5494  **/
5495 u32 i40e_get_current_fd_count(struct i40e_pf *pf)
5496 {
5497         u32 val, fcnt_prog;
5498
5499         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5500         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5501                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5502                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5503         return fcnt_prog;
5504 }
5505
5506 /**
5507  * i40e_get_global_fd_count - Get total FD filters programmed on device
5508  * @pf: board private structure
5509  **/
5510 u32 i40e_get_global_fd_count(struct i40e_pf *pf)
5511 {
5512         u32 val, fcnt_prog;
5513
5514         val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
5515         fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
5516                     ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
5517                      I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
5518         return fcnt_prog;
5519 }
5520
5521 /**
5522  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5523  * @pf: board private structure
5524  **/
5525 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5526 {
5527         u32 fcnt_prog, fcnt_avail;
5528
5529         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5530                 return;
5531
5532         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5533          * to re-enable
5534          */
5535         fcnt_prog = i40e_get_global_fd_count(pf);
5536         fcnt_avail = pf->fdir_pf_filter_count;
5537         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5538             (pf->fd_add_err == 0) ||
5539             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5540                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5541                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5542                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5543                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5544                                 dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5545                 }
5546         }
5547         /* Wait for some more space to be available to turn on ATR */
5548         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5549                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5550                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5551                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5552                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5553                                 dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
5554                 }
5555         }
5556 }
5557
5558 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5559 #define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
5560 /**
5561  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5562  * @pf: board private structure
5563  **/
5564 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5565 {
5566         unsigned long min_flush_time;
5567         int flush_wait_retry = 50;
5568         bool disable_atr = false;
5569         int fd_room;
5570         int reg;
5571
5572         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5573                 return;
5574
5575         if (time_after(jiffies, pf->fd_flush_timestamp +
5576                                 (I40E_MIN_FD_FLUSH_INTERVAL * HZ))) {
5577                 /* If the flush is happening too quick and we have mostly
5578                  * SB rules we should not re-enable ATR for some time.
5579                  */
5580                 min_flush_time = pf->fd_flush_timestamp
5581                                 + (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
5582                 fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;
5583
5584                 if (!(time_after(jiffies, min_flush_time)) &&
5585                     (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
5586                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5587                                 dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
5588                         disable_atr = true;
5589                 }
5590
5591                 pf->fd_flush_timestamp = jiffies;
5592                 pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5593                 /* flush all filters */
5594                 wr32(&pf->hw, I40E_PFQF_CTL_1,
5595                      I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
5596                 i40e_flush(&pf->hw);
5597                 pf->fd_flush_cnt++;
5598                 pf->fd_add_err = 0;
5599                 do {
5600                         /* Check FD flush status every 5-6msec */
5601                         usleep_range(5000, 6000);
5602                         reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
5603                         if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
5604                                 break;
5605                 } while (flush_wait_retry--);
5606                 if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
5607                         dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
5608                 } else {
5609                         /* replay sideband filters */
5610                         i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
5611                         if (!disable_atr)
5612                                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
5613                         clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5614                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5615                                 dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
5616                 }
5617         }
5618 }
5619
5620 /**
5621  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
5622  * @pf: board private structure
5623  **/
5624 u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
5625 {
5626         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
5627 }
5628
5629 /* We can see up to 256 filter programming desc in transit if the filters are
5630  * being applied really fast; before we see the first
5631  * filter miss error on Rx queue 0. Accumulating enough error messages before
5632  * reacting will make sure we don't cause flush too often.
5633  */
5634 #define I40E_MAX_FD_PROGRAM_ERROR 256
5635
5636 /**
5637  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
5638  * @pf: board private structure
5639  **/
5640 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
5641 {
5642
5643         /* if interface is down do nothing */
5644         if (test_bit(__I40E_DOWN, &pf->state))
5645                 return;
5646
5647         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5648                 return;
5649
5650         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5651                 i40e_fdir_flush_and_replay(pf);
5652
5653         i40e_fdir_check_and_reenable(pf);
5654
5655 }
5656
5657 /**
5658  * i40e_vsi_link_event - notify VSI of a link event
5659  * @vsi: vsi to be notified
5660  * @link_up: link up or down
5661  **/
5662 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
5663 {
5664         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
5665                 return;
5666
5667         switch (vsi->type) {
5668         case I40E_VSI_MAIN:
5669 #ifdef I40E_FCOE
5670         case I40E_VSI_FCOE:
5671 #endif
5672                 if (!vsi->netdev || !vsi->netdev_registered)
5673                         break;
5674
5675                 if (link_up) {
5676                         netif_carrier_on(vsi->netdev);
5677                         netif_tx_wake_all_queues(vsi->netdev);
5678                 } else {
5679                         netif_carrier_off(vsi->netdev);
5680                         netif_tx_stop_all_queues(vsi->netdev);
5681                 }
5682                 break;
5683
5684         case I40E_VSI_SRIOV:
5685         case I40E_VSI_VMDQ2:
5686         case I40E_VSI_CTRL:
5687         case I40E_VSI_MIRROR:
5688         default:
5689                 /* there is no notification for other VSIs */
5690                 break;
5691         }
5692 }
5693
5694 /**
5695  * i40e_veb_link_event - notify elements on the veb of a link event
5696  * @veb: veb to be notified
5697  * @link_up: link up or down
5698  **/
5699 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
5700 {
5701         struct i40e_pf *pf;
5702         int i;
5703
5704         if (!veb || !veb->pf)
5705                 return;
5706         pf = veb->pf;
5707
5708         /* depth first... */
5709         for (i = 0; i < I40E_MAX_VEB; i++)
5710                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
5711                         i40e_veb_link_event(pf->veb[i], link_up);
5712
5713         /* ... now the local VSIs */
5714         for (i = 0; i < pf->num_alloc_vsi; i++)
5715                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
5716                         i40e_vsi_link_event(pf->vsi[i], link_up);
5717 }
5718
5719 /**
5720  * i40e_link_event - Update netif_carrier status
5721  * @pf: board private structure
5722  **/
5723 static void i40e_link_event(struct i40e_pf *pf)
5724 {
5725         bool new_link, old_link;
5726         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
5727         u8 new_link_speed, old_link_speed;
5728
5729         /* set this to force the get_link_status call to refresh state */
5730         pf->hw.phy.get_link_info = true;
5731
5732         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
5733         new_link = i40e_get_link_status(&pf->hw);
5734         old_link_speed = pf->hw.phy.link_info_old.link_speed;
5735         new_link_speed = pf->hw.phy.link_info.link_speed;
5736
5737         if (new_link == old_link &&
5738             new_link_speed == old_link_speed &&
5739             (test_bit(__I40E_DOWN, &vsi->state) ||
5740              new_link == netif_carrier_ok(vsi->netdev)))
5741                 return;
5742
5743         if (!test_bit(__I40E_DOWN, &vsi->state))
5744                 i40e_print_link_message(vsi, new_link);
5745
5746         /* Notify the base of the switch tree connected to
5747          * the link.  Floating VEBs are not notified.
5748          */
5749         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
5750                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
5751         else
5752                 i40e_vsi_link_event(vsi, new_link);
5753
5754         if (pf->vf)
5755                 i40e_vc_notify_link_state(pf);
5756
5757         if (pf->flags & I40E_FLAG_PTP)
5758                 i40e_ptp_set_increment(pf);
5759 }
5760
5761 /**
5762  * i40e_check_hang_subtask - Check for hung queues and dropped interrupts
5763  * @pf: board private structure
5764  *
5765  * Set the per-queue flags to request a check for stuck queues in the irq
5766  * clean functions, then force interrupts to be sure the irq clean is called.
5767  **/
5768 static void i40e_check_hang_subtask(struct i40e_pf *pf)
5769 {
5770         int i, v;
5771
5772         /* If we're down or resetting, just bail */
5773         if (test_bit(__I40E_DOWN, &pf->state) ||
5774             test_bit(__I40E_CONFIG_BUSY, &pf->state))
5775                 return;
5776
5777         /* for each VSI/netdev
5778          *     for each Tx queue
5779          *         set the check flag
5780          *     for each q_vector
5781          *         force an interrupt
5782          */
5783         for (v = 0; v < pf->num_alloc_vsi; v++) {
5784                 struct i40e_vsi *vsi = pf->vsi[v];
5785                 int armed = 0;
5786
5787                 if (!pf->vsi[v] ||
5788                     test_bit(__I40E_DOWN, &vsi->state) ||
5789                     (vsi->netdev && !netif_carrier_ok(vsi->netdev)))
5790                         continue;
5791
5792                 for (i = 0; i < vsi->num_queue_pairs; i++) {
5793                         set_check_for_tx_hang(vsi->tx_rings[i]);
5794                         if (test_bit(__I40E_HANG_CHECK_ARMED,
5795                                      &vsi->tx_rings[i]->state))
5796                                 armed++;
5797                 }
5798
5799                 if (armed) {
5800                         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
5801                                 wr32(&vsi->back->hw, I40E_PFINT_DYN_CTL0,
5802                                      (I40E_PFINT_DYN_CTL0_INTENA_MASK |
5803                                       I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK |
5804                                       I40E_PFINT_DYN_CTL0_ITR_INDX_MASK |
5805                                       I40E_PFINT_DYN_CTL0_SW_ITR_INDX_ENA_MASK |
5806                                       I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK));
5807                         } else {
5808                                 u16 vec = vsi->base_vector - 1;
5809                                 u32 val = (I40E_PFINT_DYN_CTLN_INTENA_MASK |
5810                                       I40E_PFINT_DYN_CTLN_SWINT_TRIG_MASK |
5811                                       I40E_PFINT_DYN_CTLN_ITR_INDX_MASK |
5812                                       I40E_PFINT_DYN_CTLN_SW_ITR_INDX_ENA_MASK |
5813                                       I40E_PFINT_DYN_CTLN_SW_ITR_INDX_MASK);
5814                                 for (i = 0; i < vsi->num_q_vectors; i++, vec++)
5815                                         wr32(&vsi->back->hw,
5816                                              I40E_PFINT_DYN_CTLN(vec), val);
5817                         }
5818                         i40e_flush(&vsi->back->hw);
5819                 }
5820         }
5821 }
5822
5823 /**
5824  * i40e_watchdog_subtask - periodic checks not using event driven response
5825  * @pf: board private structure
5826  **/
5827 static void i40e_watchdog_subtask(struct i40e_pf *pf)
5828 {
5829         int i;
5830
5831         /* if interface is down do nothing */
5832         if (test_bit(__I40E_DOWN, &pf->state) ||
5833             test_bit(__I40E_CONFIG_BUSY, &pf->state))
5834                 return;
5835
5836         /* make sure we don't do these things too often */
5837         if (time_before(jiffies, (pf->service_timer_previous +
5838                                   pf->service_timer_period)))
5839                 return;
5840         pf->service_timer_previous = jiffies;
5841
5842         i40e_check_hang_subtask(pf);
5843         i40e_link_event(pf);
5844
5845         /* Update the stats for active netdevs so the network stack
5846          * can look at updated numbers whenever it cares to
5847          */
5848         for (i = 0; i < pf->num_alloc_vsi; i++)
5849                 if (pf->vsi[i] && pf->vsi[i]->netdev)
5850                         i40e_update_stats(pf->vsi[i]);
5851
5852         /* Update the stats for the active switching components */
5853         for (i = 0; i < I40E_MAX_VEB; i++)
5854                 if (pf->veb[i])
5855                         i40e_update_veb_stats(pf->veb[i]);
5856
5857         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
5858 }
5859
5860 /**
5861  * i40e_reset_subtask - Set up for resetting the device and driver
5862  * @pf: board private structure
5863  **/
5864 static void i40e_reset_subtask(struct i40e_pf *pf)
5865 {
5866         u32 reset_flags = 0;
5867
5868         rtnl_lock();
5869         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
5870                 reset_flags |= BIT_ULL(__I40E_REINIT_REQUESTED);
5871                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
5872         }
5873         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
5874                 reset_flags |= BIT_ULL(__I40E_PF_RESET_REQUESTED);
5875                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5876         }
5877         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
5878                 reset_flags |= BIT_ULL(__I40E_CORE_RESET_REQUESTED);
5879                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
5880         }
5881         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
5882                 reset_flags |= BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED);
5883                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
5884         }
5885         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
5886                 reset_flags |= BIT_ULL(__I40E_DOWN_REQUESTED);
5887                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
5888         }
5889
5890         /* If there's a recovery already waiting, it takes
5891          * precedence before starting a new reset sequence.
5892          */
5893         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
5894                 i40e_handle_reset_warning(pf);
5895                 goto unlock;
5896         }
5897
5898         /* If we're already down or resetting, just bail */
5899         if (reset_flags &&
5900             !test_bit(__I40E_DOWN, &pf->state) &&
5901             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
5902                 i40e_do_reset(pf, reset_flags);
5903
5904 unlock:
5905         rtnl_unlock();
5906 }
5907
5908 /**
5909  * i40e_handle_link_event - Handle link event
5910  * @pf: board private structure
5911  * @e: event info posted on ARQ
5912  **/
5913 static void i40e_handle_link_event(struct i40e_pf *pf,
5914                                    struct i40e_arq_event_info *e)
5915 {
5916         struct i40e_hw *hw = &pf->hw;
5917         struct i40e_aqc_get_link_status *status =
5918                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
5919
5920         /* save off old link status information */
5921         hw->phy.link_info_old = hw->phy.link_info;
5922
5923         /* Do a new status request to re-enable LSE reporting
5924          * and load new status information into the hw struct
5925          * This completely ignores any state information
5926          * in the ARQ event info, instead choosing to always
5927          * issue the AQ update link status command.
5928          */
5929         i40e_link_event(pf);
5930
5931         /* check for unqualified module, if link is down */
5932         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
5933             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
5934             (!(status->link_info & I40E_AQ_LINK_UP)))
5935                 dev_err(&pf->pdev->dev,
5936                         "The driver failed to link because an unqualified module was detected.\n");
5937 }
5938
5939 /**
5940  * i40e_clean_adminq_subtask - Clean the AdminQ rings
5941  * @pf: board private structure
5942  **/
5943 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
5944 {
5945         struct i40e_arq_event_info event;
5946         struct i40e_hw *hw = &pf->hw;
5947         u16 pending, i = 0;
5948         i40e_status ret;
5949         u16 opcode;
5950         u32 oldval;
5951         u32 val;
5952
5953         /* Do not run clean AQ when PF reset fails */
5954         if (test_bit(__I40E_RESET_FAILED, &pf->state))
5955                 return;
5956
5957         /* check for error indications */
5958         val = rd32(&pf->hw, pf->hw.aq.arq.len);
5959         oldval = val;
5960         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
5961                 dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
5962                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
5963         }
5964         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
5965                 dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
5966                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
5967         }
5968         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
5969                 dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
5970                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
5971         }
5972         if (oldval != val)
5973                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
5974
5975         val = rd32(&pf->hw, pf->hw.aq.asq.len);
5976         oldval = val;
5977         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
5978                 dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
5979                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
5980         }
5981         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
5982                 dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
5983                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
5984         }
5985         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
5986                 dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
5987                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
5988         }
5989         if (oldval != val)
5990                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
5991
5992         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
5993         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
5994         if (!event.msg_buf)
5995                 return;
5996
5997         do {
5998                 ret = i40e_clean_arq_element(hw, &event, &pending);
5999                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
6000                         break;
6001                 else if (ret) {
6002                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
6003                         break;
6004                 }
6005
6006                 opcode = le16_to_cpu(event.desc.opcode);
6007                 switch (opcode) {
6008
6009                 case i40e_aqc_opc_get_link_status:
6010                         i40e_handle_link_event(pf, &event);
6011                         break;
6012                 case i40e_aqc_opc_send_msg_to_pf:
6013                         ret = i40e_vc_process_vf_msg(pf,
6014                                         le16_to_cpu(event.desc.retval),
6015                                         le32_to_cpu(event.desc.cookie_high),
6016                                         le32_to_cpu(event.desc.cookie_low),
6017                                         event.msg_buf,
6018                                         event.msg_len);
6019                         break;
6020                 case i40e_aqc_opc_lldp_update_mib:
6021                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
6022 #ifdef CONFIG_I40E_DCB
6023                         rtnl_lock();
6024                         ret = i40e_handle_lldp_event(pf, &event);
6025                         rtnl_unlock();
6026 #endif /* CONFIG_I40E_DCB */
6027                         break;
6028                 case i40e_aqc_opc_event_lan_overflow:
6029                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
6030                         i40e_handle_lan_overflow_event(pf, &event);
6031                         break;
6032                 case i40e_aqc_opc_send_msg_to_peer:
6033                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
6034                         break;
6035                 case i40e_aqc_opc_nvm_erase:
6036                 case i40e_aqc_opc_nvm_update:
6037                         i40e_debug(&pf->hw, I40E_DEBUG_NVM, "ARQ NVM operation completed\n");
6038                         break;
6039                 default:
6040                         dev_info(&pf->pdev->dev,
6041                                  "ARQ Error: Unknown event 0x%04x received\n",
6042                                  opcode);
6043                         break;
6044                 }
6045         } while (pending && (i++ < pf->adminq_work_limit));
6046
6047         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
6048         /* re-enable Admin queue interrupt cause */
6049         val = rd32(hw, I40E_PFINT_ICR0_ENA);
6050         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
6051         wr32(hw, I40E_PFINT_ICR0_ENA, val);
6052         i40e_flush(hw);
6053
6054         kfree(event.msg_buf);
6055 }
6056
6057 /**
6058  * i40e_verify_eeprom - make sure eeprom is good to use
6059  * @pf: board private structure
6060  **/
6061 static void i40e_verify_eeprom(struct i40e_pf *pf)
6062 {
6063         int err;
6064
6065         err = i40e_diag_eeprom_test(&pf->hw);
6066         if (err) {
6067                 /* retry in case of garbage read */
6068                 err = i40e_diag_eeprom_test(&pf->hw);
6069                 if (err) {
6070                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
6071                                  err);
6072                         set_bit(__I40E_BAD_EEPROM, &pf->state);
6073                 }
6074         }
6075
6076         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
6077                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
6078                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
6079         }
6080 }
6081
6082 /**
6083  * i40e_enable_pf_switch_lb
6084  * @pf: pointer to the PF structure
6085  *
6086  * enable switch loop back or die - no point in a return value
6087  **/
6088 static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
6089 {
6090         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6091         struct i40e_vsi_context ctxt;
6092         int ret;
6093
6094         ctxt.seid = pf->main_vsi_seid;
6095         ctxt.pf_num = pf->hw.pf_id;
6096         ctxt.vf_num = 0;
6097         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6098         if (ret) {
6099                 dev_info(&pf->pdev->dev,
6100                          "couldn't get PF vsi config, err %s aq_err %s\n",
6101                          i40e_stat_str(&pf->hw, ret),
6102                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6103                 return;
6104         }
6105         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6106         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6107         ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6108
6109         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6110         if (ret) {
6111                 dev_info(&pf->pdev->dev,
6112                          "update vsi switch failed, err %s aq_err %s\n",
6113                          i40e_stat_str(&pf->hw, ret),
6114                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6115         }
6116 }
6117
6118 /**
6119  * i40e_disable_pf_switch_lb
6120  * @pf: pointer to the PF structure
6121  *
6122  * disable switch loop back or die - no point in a return value
6123  **/
6124 static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
6125 {
6126         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6127         struct i40e_vsi_context ctxt;
6128         int ret;
6129
6130         ctxt.seid = pf->main_vsi_seid;
6131         ctxt.pf_num = pf->hw.pf_id;
6132         ctxt.vf_num = 0;
6133         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6134         if (ret) {
6135                 dev_info(&pf->pdev->dev,
6136                          "couldn't get PF vsi config, err %s aq_err %s\n",
6137                          i40e_stat_str(&pf->hw, ret),
6138                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6139                 return;
6140         }
6141         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6142         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6143         ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6144
6145         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6146         if (ret) {
6147                 dev_info(&pf->pdev->dev,
6148                          "update vsi switch failed, err %s aq_err %s\n",
6149                          i40e_stat_str(&pf->hw, ret),
6150                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6151         }
6152 }
6153
6154 /**
6155  * i40e_config_bridge_mode - Configure the HW bridge mode
6156  * @veb: pointer to the bridge instance
6157  *
6158  * Configure the loop back mode for the LAN VSI that is downlink to the
6159  * specified HW bridge instance. It is expected this function is called
6160  * when a new HW bridge is instantiated.
6161  **/
6162 static void i40e_config_bridge_mode(struct i40e_veb *veb)
6163 {
6164         struct i40e_pf *pf = veb->pf;
6165
6166         dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
6167                  veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
6168         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
6169                 i40e_disable_pf_switch_lb(pf);
6170         else
6171                 i40e_enable_pf_switch_lb(pf);
6172 }
6173
6174 /**
6175  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
6176  * @veb: pointer to the VEB instance
6177  *
6178  * This is a recursive function that first builds the attached VSIs then
6179  * recurses in to build the next layer of VEB.  We track the connections
6180  * through our own index numbers because the seid's from the HW could
6181  * change across the reset.
6182  **/
6183 static int i40e_reconstitute_veb(struct i40e_veb *veb)
6184 {
6185         struct i40e_vsi *ctl_vsi = NULL;
6186         struct i40e_pf *pf = veb->pf;
6187         int v, veb_idx;
6188         int ret;
6189
6190         /* build VSI that owns this VEB, temporarily attached to base VEB */
6191         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
6192                 if (pf->vsi[v] &&
6193                     pf->vsi[v]->veb_idx == veb->idx &&
6194                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
6195                         ctl_vsi = pf->vsi[v];
6196                         break;
6197                 }
6198         }
6199         if (!ctl_vsi) {
6200                 dev_info(&pf->pdev->dev,
6201                          "missing owner VSI for veb_idx %d\n", veb->idx);
6202                 ret = -ENOENT;
6203                 goto end_reconstitute;
6204         }
6205         if (ctl_vsi != pf->vsi[pf->lan_vsi])
6206                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6207         ret = i40e_add_vsi(ctl_vsi);
6208         if (ret) {
6209                 dev_info(&pf->pdev->dev,
6210                          "rebuild of veb_idx %d owner VSI failed: %d\n",
6211                          veb->idx, ret);
6212                 goto end_reconstitute;
6213         }
6214         i40e_vsi_reset_stats(ctl_vsi);
6215
6216         /* create the VEB in the switch and move the VSI onto the VEB */
6217         ret = i40e_add_veb(veb, ctl_vsi);
6218         if (ret)
6219                 goto end_reconstitute;
6220
6221         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
6222                 veb->bridge_mode = BRIDGE_MODE_VEB;
6223         else
6224                 veb->bridge_mode = BRIDGE_MODE_VEPA;
6225         i40e_config_bridge_mode(veb);
6226
6227         /* create the remaining VSIs attached to this VEB */
6228         for (v = 0; v < pf->num_alloc_vsi; v++) {
6229                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
6230                         continue;
6231
6232                 if (pf->vsi[v]->veb_idx == veb->idx) {
6233                         struct i40e_vsi *vsi = pf->vsi[v];
6234                         vsi->uplink_seid = veb->seid;
6235                         ret = i40e_add_vsi(vsi);
6236                         if (ret) {
6237                                 dev_info(&pf->pdev->dev,
6238                                          "rebuild of vsi_idx %d failed: %d\n",
6239                                          v, ret);
6240                                 goto end_reconstitute;
6241                         }
6242                         i40e_vsi_reset_stats(vsi);
6243                 }
6244         }
6245
6246         /* create any VEBs attached to this VEB - RECURSION */
6247         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
6248                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
6249                         pf->veb[veb_idx]->uplink_seid = veb->seid;
6250                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
6251                         if (ret)
6252                                 break;
6253                 }
6254         }
6255
6256 end_reconstitute:
6257         return ret;
6258 }
6259
6260 /**
6261  * i40e_get_capabilities - get info about the HW
6262  * @pf: the PF struct
6263  **/
6264 static int i40e_get_capabilities(struct i40e_pf *pf)
6265 {
6266         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
6267         u16 data_size;
6268         int buf_len;
6269         int err;
6270
6271         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
6272         do {
6273                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
6274                 if (!cap_buf)
6275                         return -ENOMEM;
6276
6277                 /* this loads the data into the hw struct for us */
6278                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
6279                                             &data_size,
6280                                             i40e_aqc_opc_list_func_capabilities,
6281                                             NULL);
6282                 /* data loaded, buffer no longer needed */
6283                 kfree(cap_buf);
6284
6285                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
6286                         /* retry with a larger buffer */
6287                         buf_len = data_size;
6288                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
6289                         dev_info(&pf->pdev->dev,
6290                                  "capability discovery failed, err %s aq_err %s\n",
6291                                  i40e_stat_str(&pf->hw, err),
6292                                  i40e_aq_str(&pf->hw,
6293                                              pf->hw.aq.asq_last_status));
6294                         return -ENODEV;
6295                 }
6296         } while (err);
6297
6298         if (((pf->hw.aq.fw_maj_ver == 2) && (pf->hw.aq.fw_min_ver < 22)) ||
6299             (pf->hw.aq.fw_maj_ver < 2)) {
6300                 pf->hw.func_caps.num_msix_vectors++;
6301                 pf->hw.func_caps.num_msix_vectors_vf++;
6302         }
6303
6304         if (pf->hw.debug_mask & I40E_DEBUG_USER)
6305                 dev_info(&pf->pdev->dev,
6306                          "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",
6307                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6308                          pf->hw.func_caps.num_msix_vectors,
6309                          pf->hw.func_caps.num_msix_vectors_vf,
6310                          pf->hw.func_caps.fd_filters_guaranteed,
6311                          pf->hw.func_caps.fd_filters_best_effort,
6312                          pf->hw.func_caps.num_tx_qp,
6313                          pf->hw.func_caps.num_vsis);
6314
6315 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6316                        + pf->hw.func_caps.num_vfs)
6317         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6318                 dev_info(&pf->pdev->dev,
6319                          "got num_vsis %d, setting num_vsis to %d\n",
6320                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6321                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6322         }
6323
6324         return 0;
6325 }
6326
6327 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6328
6329 /**
6330  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6331  * @pf: board private structure
6332  **/
6333 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6334 {
6335         struct i40e_vsi *vsi;
6336         int i;
6337
6338         /* quick workaround for an NVM issue that leaves a critical register
6339          * uninitialized
6340          */
6341         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6342                 static const u32 hkey[] = {
6343                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6344                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6345                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6346                         0x95b3a76d};
6347
6348                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6349                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6350         }
6351
6352         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6353                 return;
6354
6355         /* find existing VSI and see if it needs configuring */
6356         vsi = NULL;
6357         for (i = 0; i < pf->num_alloc_vsi; i++) {
6358                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6359                         vsi = pf->vsi[i];
6360                         break;
6361                 }
6362         }
6363
6364         /* create a new VSI if none exists */
6365         if (!vsi) {
6366                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6367                                      pf->vsi[pf->lan_vsi]->seid, 0);
6368                 if (!vsi) {
6369                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6370                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6371                         return;
6372                 }
6373         }
6374
6375         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6376 }
6377
6378 /**
6379  * i40e_fdir_teardown - release the Flow Director resources
6380  * @pf: board private structure
6381  **/
6382 static void i40e_fdir_teardown(struct i40e_pf *pf)
6383 {
6384         int i;
6385
6386         i40e_fdir_filter_exit(pf);
6387         for (i = 0; i < pf->num_alloc_vsi; i++) {
6388                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6389                         i40e_vsi_release(pf->vsi[i]);
6390                         break;
6391                 }
6392         }
6393 }
6394
6395 /**
6396  * i40e_prep_for_reset - prep for the core to reset
6397  * @pf: board private structure
6398  *
6399  * Close up the VFs and other things in prep for PF Reset.
6400   **/
6401 static void i40e_prep_for_reset(struct i40e_pf *pf)
6402 {
6403         struct i40e_hw *hw = &pf->hw;
6404         i40e_status ret = 0;
6405         u32 v;
6406
6407         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6408         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6409                 return;
6410
6411         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6412
6413         /* quiesce the VSIs and their queues that are not already DOWN */
6414         i40e_pf_quiesce_all_vsi(pf);
6415
6416         for (v = 0; v < pf->num_alloc_vsi; v++) {
6417                 if (pf->vsi[v])
6418                         pf->vsi[v]->seid = 0;
6419         }
6420
6421         i40e_shutdown_adminq(&pf->hw);
6422
6423         /* call shutdown HMC */
6424         if (hw->hmc.hmc_obj) {
6425                 ret = i40e_shutdown_lan_hmc(hw);
6426                 if (ret)
6427                         dev_warn(&pf->pdev->dev,
6428                                  "shutdown_lan_hmc failed: %d\n", ret);
6429         }
6430 }
6431
6432 /**
6433  * i40e_send_version - update firmware with driver version
6434  * @pf: PF struct
6435  */
6436 static void i40e_send_version(struct i40e_pf *pf)
6437 {
6438         struct i40e_driver_version dv;
6439
6440         dv.major_version = DRV_VERSION_MAJOR;
6441         dv.minor_version = DRV_VERSION_MINOR;
6442         dv.build_version = DRV_VERSION_BUILD;
6443         dv.subbuild_version = 0;
6444         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6445         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6446 }
6447
6448 /**
6449  * i40e_reset_and_rebuild - reset and rebuild using a saved config
6450  * @pf: board private structure
6451  * @reinit: if the Main VSI needs to re-initialized.
6452  **/
6453 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
6454 {
6455         struct i40e_hw *hw = &pf->hw;
6456         u8 set_fc_aq_fail = 0;
6457         i40e_status ret;
6458         u32 v;
6459
6460         /* Now we wait for GRST to settle out.
6461          * We don't have to delete the VEBs or VSIs from the hw switch
6462          * because the reset will make them disappear.
6463          */
6464         ret = i40e_pf_reset(hw);
6465         if (ret) {
6466                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6467                 set_bit(__I40E_RESET_FAILED, &pf->state);
6468                 goto clear_recovery;
6469         }
6470         pf->pfr_count++;
6471
6472         if (test_bit(__I40E_DOWN, &pf->state))
6473                 goto clear_recovery;
6474         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6475
6476         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6477         ret = i40e_init_adminq(&pf->hw);
6478         if (ret) {
6479                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, err %s aq_err %s\n",
6480                          i40e_stat_str(&pf->hw, ret),
6481                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6482                 goto clear_recovery;
6483         }
6484
6485         /* re-verify the eeprom if we just had an EMP reset */
6486         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
6487                 i40e_verify_eeprom(pf);
6488
6489         i40e_clear_pxe_mode(hw);
6490         ret = i40e_get_capabilities(pf);
6491         if (ret)
6492                 goto end_core_reset;
6493
6494         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6495                                 hw->func_caps.num_rx_qp,
6496                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6497         if (ret) {
6498                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6499                 goto end_core_reset;
6500         }
6501         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6502         if (ret) {
6503                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6504                 goto end_core_reset;
6505         }
6506
6507 #ifdef CONFIG_I40E_DCB
6508         ret = i40e_init_pf_dcb(pf);
6509         if (ret) {
6510                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
6511                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
6512                 /* Continue without DCB enabled */
6513         }
6514 #endif /* CONFIG_I40E_DCB */
6515 #ifdef I40E_FCOE
6516         ret = i40e_init_pf_fcoe(pf);
6517         if (ret)
6518                 dev_info(&pf->pdev->dev, "init_pf_fcoe failed: %d\n", ret);
6519
6520 #endif
6521         /* do basic switch setup */
6522         ret = i40e_setup_pf_switch(pf, reinit);
6523         if (ret)
6524                 goto end_core_reset;
6525
6526         /* driver is only interested in link up/down and module qualification
6527          * reports from firmware
6528          */
6529         ret = i40e_aq_set_phy_int_mask(&pf->hw,
6530                                        I40E_AQ_EVENT_LINK_UPDOWN |
6531                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
6532         if (ret)
6533                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
6534                          i40e_stat_str(&pf->hw, ret),
6535                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6536
6537         /* make sure our flow control settings are restored */
6538         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6539         if (ret)
6540                 dev_info(&pf->pdev->dev, "set fc fail, err %s aq_err %s\n",
6541                          i40e_stat_str(&pf->hw, ret),
6542                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6543
6544         /* Rebuild the VSIs and VEBs that existed before reset.
6545          * They are still in our local switch element arrays, so only
6546          * need to rebuild the switch model in the HW.
6547          *
6548          * If there were VEBs but the reconstitution failed, we'll try
6549          * try to recover minimal use by getting the basic PF VSI working.
6550          */
6551         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6552                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6553                 /* find the one VEB connected to the MAC, and find orphans */
6554                 for (v = 0; v < I40E_MAX_VEB; v++) {
6555                         if (!pf->veb[v])
6556                                 continue;
6557
6558                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6559                             pf->veb[v]->uplink_seid == 0) {
6560                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6561
6562                                 if (!ret)
6563                                         continue;
6564
6565                                 /* If Main VEB failed, we're in deep doodoo,
6566                                  * so give up rebuilding the switch and set up
6567                                  * for minimal rebuild of PF VSI.
6568                                  * If orphan failed, we'll report the error
6569                                  * but try to keep going.
6570                                  */
6571                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6572                                         dev_info(&pf->pdev->dev,
6573                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6574                                                  ret);
6575                                         pf->vsi[pf->lan_vsi]->uplink_seid
6576                                                                 = pf->mac_seid;
6577                                         break;
6578                                 } else if (pf->veb[v]->uplink_seid == 0) {
6579                                         dev_info(&pf->pdev->dev,
6580                                                  "rebuild of orphan VEB failed: %d\n",
6581                                                  ret);
6582                                 }
6583                         }
6584                 }
6585         }
6586
6587         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6588                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6589                 /* no VEB, so rebuild only the Main VSI */
6590                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6591                 if (ret) {
6592                         dev_info(&pf->pdev->dev,
6593                                  "rebuild of Main VSI failed: %d\n", ret);
6594                         goto end_core_reset;
6595                 }
6596         }
6597
6598         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
6599             (pf->hw.aq.fw_maj_ver < 4)) {
6600                 msleep(75);
6601                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6602                 if (ret)
6603                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
6604                                  i40e_stat_str(&pf->hw, ret),
6605                                  i40e_aq_str(&pf->hw,
6606                                              pf->hw.aq.asq_last_status));
6607         }
6608         /* reinit the misc interrupt */
6609         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6610                 ret = i40e_setup_misc_vector(pf);
6611
6612         /* restart the VSIs that were rebuilt and running before the reset */
6613         i40e_pf_unquiesce_all_vsi(pf);
6614
6615         if (pf->num_alloc_vfs) {
6616                 for (v = 0; v < pf->num_alloc_vfs; v++)
6617                         i40e_reset_vf(&pf->vf[v], true);
6618         }
6619
6620         /* tell the firmware that we're starting */
6621         i40e_send_version(pf);
6622
6623 end_core_reset:
6624         clear_bit(__I40E_RESET_FAILED, &pf->state);
6625 clear_recovery:
6626         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
6627 }
6628
6629 /**
6630  * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
6631  * @pf: board private structure
6632  *
6633  * Close up the VFs and other things in prep for a Core Reset,
6634  * then get ready to rebuild the world.
6635  **/
6636 static void i40e_handle_reset_warning(struct i40e_pf *pf)
6637 {
6638         i40e_prep_for_reset(pf);
6639         i40e_reset_and_rebuild(pf, false);
6640 }
6641
6642 /**
6643  * i40e_handle_mdd_event
6644  * @pf: pointer to the PF structure
6645  *
6646  * Called from the MDD irq handler to identify possibly malicious vfs
6647  **/
6648 static void i40e_handle_mdd_event(struct i40e_pf *pf)
6649 {
6650         struct i40e_hw *hw = &pf->hw;
6651         bool mdd_detected = false;
6652         bool pf_mdd_detected = false;
6653         struct i40e_vf *vf;
6654         u32 reg;
6655         int i;
6656
6657         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
6658                 return;
6659
6660         /* find what triggered the MDD event */
6661         reg = rd32(hw, I40E_GL_MDET_TX);
6662         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
6663                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
6664                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
6665                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
6666                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
6667                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
6668                                 I40E_GL_MDET_TX_EVENT_SHIFT;
6669                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
6670                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
6671                                 pf->hw.func_caps.base_queue;
6672                 if (netif_msg_tx_err(pf))
6673                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
6674                                  event, queue, pf_num, vf_num);
6675                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
6676                 mdd_detected = true;
6677         }
6678         reg = rd32(hw, I40E_GL_MDET_RX);
6679         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
6680                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
6681                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
6682                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
6683                                 I40E_GL_MDET_RX_EVENT_SHIFT;
6684                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
6685                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
6686                                 pf->hw.func_caps.base_queue;
6687                 if (netif_msg_rx_err(pf))
6688                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
6689                                  event, queue, func);
6690                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
6691                 mdd_detected = true;
6692         }
6693
6694         if (mdd_detected) {
6695                 reg = rd32(hw, I40E_PF_MDET_TX);
6696                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
6697                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
6698                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
6699                         pf_mdd_detected = true;
6700                 }
6701                 reg = rd32(hw, I40E_PF_MDET_RX);
6702                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
6703                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
6704                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
6705                         pf_mdd_detected = true;
6706                 }
6707                 /* Queue belongs to the PF, initiate a reset */
6708                 if (pf_mdd_detected) {
6709                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6710                         i40e_service_event_schedule(pf);
6711                 }
6712         }
6713
6714         /* see if one of the VFs needs its hand slapped */
6715         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
6716                 vf = &(pf->vf[i]);
6717                 reg = rd32(hw, I40E_VP_MDET_TX(i));
6718                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
6719                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
6720                         vf->num_mdd_events++;
6721                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
6722                                  i);
6723                 }
6724
6725                 reg = rd32(hw, I40E_VP_MDET_RX(i));
6726                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
6727                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
6728                         vf->num_mdd_events++;
6729                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
6730                                  i);
6731                 }
6732
6733                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
6734                         dev_info(&pf->pdev->dev,
6735                                  "Too many MDD events on VF %d, disabled\n", i);
6736                         dev_info(&pf->pdev->dev,
6737                                  "Use PF Control I/F to re-enable the VF\n");
6738                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
6739                 }
6740         }
6741
6742         /* re-enable mdd interrupt cause */
6743         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
6744         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
6745         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
6746         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
6747         i40e_flush(hw);
6748 }
6749
6750 #ifdef CONFIG_I40E_VXLAN
6751 /**
6752  * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
6753  * @pf: board private structure
6754  **/
6755 static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
6756 {
6757         struct i40e_hw *hw = &pf->hw;
6758         i40e_status ret;
6759         __be16 port;
6760         int i;
6761
6762         if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
6763                 return;
6764
6765         pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
6766
6767         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
6768                 if (pf->pending_vxlan_bitmap & BIT_ULL(i)) {
6769                         pf->pending_vxlan_bitmap &= ~BIT_ULL(i);
6770                         port = pf->vxlan_ports[i];
6771                         if (port)
6772                                 ret = i40e_aq_add_udp_tunnel(hw, ntohs(port),
6773                                                      I40E_AQC_TUNNEL_TYPE_VXLAN,
6774                                                      NULL, NULL);
6775                         else
6776                                 ret = i40e_aq_del_udp_tunnel(hw, i, NULL);
6777
6778                         if (ret) {
6779                                 dev_info(&pf->pdev->dev,
6780                                          "%s vxlan port %d, index %d failed, err %s aq_err %s\n",
6781                                          port ? "add" : "delete",
6782                                          ntohs(port), i,
6783                                          i40e_stat_str(&pf->hw, ret),
6784                                          i40e_aq_str(&pf->hw,
6785                                                     pf->hw.aq.asq_last_status));
6786                                 pf->vxlan_ports[i] = 0;
6787                         }
6788                 }
6789         }
6790 }
6791
6792 #endif
6793 /**
6794  * i40e_service_task - Run the driver's async subtasks
6795  * @work: pointer to work_struct containing our data
6796  **/
6797 static void i40e_service_task(struct work_struct *work)
6798 {
6799         struct i40e_pf *pf = container_of(work,
6800                                           struct i40e_pf,
6801                                           service_task);
6802         unsigned long start_time = jiffies;
6803
6804         /* don't bother with service tasks if a reset is in progress */
6805         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
6806                 i40e_service_event_complete(pf);
6807                 return;
6808         }
6809
6810         i40e_reset_subtask(pf);
6811         i40e_handle_mdd_event(pf);
6812         i40e_vc_process_vflr_event(pf);
6813         i40e_watchdog_subtask(pf);
6814         i40e_fdir_reinit_subtask(pf);
6815         i40e_sync_filters_subtask(pf);
6816 #ifdef CONFIG_I40E_VXLAN
6817         i40e_sync_vxlan_filters_subtask(pf);
6818 #endif
6819         i40e_clean_adminq_subtask(pf);
6820
6821         i40e_service_event_complete(pf);
6822
6823         /* If the tasks have taken longer than one timer cycle or there
6824          * is more work to be done, reschedule the service task now
6825          * rather than wait for the timer to tick again.
6826          */
6827         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
6828             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
6829             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
6830             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
6831                 i40e_service_event_schedule(pf);
6832 }
6833
6834 /**
6835  * i40e_service_timer - timer callback
6836  * @data: pointer to PF struct
6837  **/
6838 static void i40e_service_timer(unsigned long data)
6839 {
6840         struct i40e_pf *pf = (struct i40e_pf *)data;
6841
6842         mod_timer(&pf->service_timer,
6843                   round_jiffies(jiffies + pf->service_timer_period));
6844         i40e_service_event_schedule(pf);
6845 }
6846
6847 /**
6848  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
6849  * @vsi: the VSI being configured
6850  **/
6851 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
6852 {
6853         struct i40e_pf *pf = vsi->back;
6854
6855         switch (vsi->type) {
6856         case I40E_VSI_MAIN:
6857                 vsi->alloc_queue_pairs = pf->num_lan_qps;
6858                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6859                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6860                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6861                         vsi->num_q_vectors = pf->num_lan_msix;
6862                 else
6863                         vsi->num_q_vectors = 1;
6864
6865                 break;
6866
6867         case I40E_VSI_FDIR:
6868                 vsi->alloc_queue_pairs = 1;
6869                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
6870                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6871                 vsi->num_q_vectors = 1;
6872                 break;
6873
6874         case I40E_VSI_VMDQ2:
6875                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
6876                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6877                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6878                 vsi->num_q_vectors = pf->num_vmdq_msix;
6879                 break;
6880
6881         case I40E_VSI_SRIOV:
6882                 vsi->alloc_queue_pairs = pf->num_vf_qps;
6883                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6884                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6885                 break;
6886
6887 #ifdef I40E_FCOE
6888         case I40E_VSI_FCOE:
6889                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
6890                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6891                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6892                 vsi->num_q_vectors = pf->num_fcoe_msix;
6893                 break;
6894
6895 #endif /* I40E_FCOE */
6896         default:
6897                 WARN_ON(1);
6898                 return -ENODATA;
6899         }
6900
6901         return 0;
6902 }
6903
6904 /**
6905  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
6906  * @type: VSI pointer
6907  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
6908  *
6909  * On error: returns error code (negative)
6910  * On success: returns 0
6911  **/
6912 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
6913 {
6914         int size;
6915         int ret = 0;
6916
6917         /* allocate memory for both Tx and Rx ring pointers */
6918         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
6919         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
6920         if (!vsi->tx_rings)
6921                 return -ENOMEM;
6922         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
6923
6924         if (alloc_qvectors) {
6925                 /* allocate memory for q_vector pointers */
6926                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
6927                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
6928                 if (!vsi->q_vectors) {
6929                         ret = -ENOMEM;
6930                         goto err_vectors;
6931                 }
6932         }
6933         return ret;
6934
6935 err_vectors:
6936         kfree(vsi->tx_rings);
6937         return ret;
6938 }
6939
6940 /**
6941  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
6942  * @pf: board private structure
6943  * @type: type of VSI
6944  *
6945  * On error: returns error code (negative)
6946  * On success: returns vsi index in PF (positive)
6947  **/
6948 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
6949 {
6950         int ret = -ENODEV;
6951         struct i40e_vsi *vsi;
6952         int vsi_idx;
6953         int i;
6954
6955         /* Need to protect the allocation of the VSIs at the PF level */
6956         mutex_lock(&pf->switch_mutex);
6957
6958         /* VSI list may be fragmented if VSI creation/destruction has
6959          * been happening.  We can afford to do a quick scan to look
6960          * for any free VSIs in the list.
6961          *
6962          * find next empty vsi slot, looping back around if necessary
6963          */
6964         i = pf->next_vsi;
6965         while (i < pf->num_alloc_vsi && pf->vsi[i])
6966                 i++;
6967         if (i >= pf->num_alloc_vsi) {
6968                 i = 0;
6969                 while (i < pf->next_vsi && pf->vsi[i])
6970                         i++;
6971         }
6972
6973         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
6974                 vsi_idx = i;             /* Found one! */
6975         } else {
6976                 ret = -ENODEV;
6977                 goto unlock_pf;  /* out of VSI slots! */
6978         }
6979         pf->next_vsi = ++i;
6980
6981         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
6982         if (!vsi) {
6983                 ret = -ENOMEM;
6984                 goto unlock_pf;
6985         }
6986         vsi->type = type;
6987         vsi->back = pf;
6988         set_bit(__I40E_DOWN, &vsi->state);
6989         vsi->flags = 0;
6990         vsi->idx = vsi_idx;
6991         vsi->rx_itr_setting = pf->rx_itr_default;
6992         vsi->tx_itr_setting = pf->tx_itr_default;
6993         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
6994                                 pf->rss_table_size : 64;
6995         vsi->netdev_registered = false;
6996         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
6997         INIT_LIST_HEAD(&vsi->mac_filter_list);
6998         vsi->irqs_ready = false;
6999
7000         ret = i40e_set_num_rings_in_vsi(vsi);
7001         if (ret)
7002                 goto err_rings;
7003
7004         ret = i40e_vsi_alloc_arrays(vsi, true);
7005         if (ret)
7006                 goto err_rings;
7007
7008         /* Setup default MSIX irq handler for VSI */
7009         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
7010
7011         pf->vsi[vsi_idx] = vsi;
7012         ret = vsi_idx;
7013         goto unlock_pf;
7014
7015 err_rings:
7016         pf->next_vsi = i - 1;
7017         kfree(vsi);
7018 unlock_pf:
7019         mutex_unlock(&pf->switch_mutex);
7020         return ret;
7021 }
7022
7023 /**
7024  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
7025  * @type: VSI pointer
7026  * @free_qvectors: a bool to specify if q_vectors need to be freed.
7027  *
7028  * On error: returns error code (negative)
7029  * On success: returns 0
7030  **/
7031 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
7032 {
7033         /* free the ring and vector containers */
7034         if (free_qvectors) {
7035                 kfree(vsi->q_vectors);
7036                 vsi->q_vectors = NULL;
7037         }
7038         kfree(vsi->tx_rings);
7039         vsi->tx_rings = NULL;
7040         vsi->rx_rings = NULL;
7041 }
7042
7043 /**
7044  * i40e_vsi_clear - Deallocate the VSI provided
7045  * @vsi: the VSI being un-configured
7046  **/
7047 static int i40e_vsi_clear(struct i40e_vsi *vsi)
7048 {
7049         struct i40e_pf *pf;
7050
7051         if (!vsi)
7052                 return 0;
7053
7054         if (!vsi->back)
7055                 goto free_vsi;
7056         pf = vsi->back;
7057
7058         mutex_lock(&pf->switch_mutex);
7059         if (!pf->vsi[vsi->idx]) {
7060                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
7061                         vsi->idx, vsi->idx, vsi, vsi->type);
7062                 goto unlock_vsi;
7063         }
7064
7065         if (pf->vsi[vsi->idx] != vsi) {
7066                 dev_err(&pf->pdev->dev,
7067                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
7068                         pf->vsi[vsi->idx]->idx,
7069                         pf->vsi[vsi->idx],
7070                         pf->vsi[vsi->idx]->type,
7071                         vsi->idx, vsi, vsi->type);
7072                 goto unlock_vsi;
7073         }
7074
7075         /* updates the PF for this cleared vsi */
7076         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7077         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
7078
7079         i40e_vsi_free_arrays(vsi, true);
7080
7081         pf->vsi[vsi->idx] = NULL;
7082         if (vsi->idx < pf->next_vsi)
7083                 pf->next_vsi = vsi->idx;
7084
7085 unlock_vsi:
7086         mutex_unlock(&pf->switch_mutex);
7087 free_vsi:
7088         kfree(vsi);
7089
7090         return 0;
7091 }
7092
7093 /**
7094  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
7095  * @vsi: the VSI being cleaned
7096  **/
7097 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
7098 {
7099         int i;
7100
7101         if (vsi->tx_rings && vsi->tx_rings[0]) {
7102                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7103                         kfree_rcu(vsi->tx_rings[i], rcu);
7104                         vsi->tx_rings[i] = NULL;
7105                         vsi->rx_rings[i] = NULL;
7106                 }
7107         }
7108 }
7109
7110 /**
7111  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
7112  * @vsi: the VSI being configured
7113  **/
7114 static int i40e_alloc_rings(struct i40e_vsi *vsi)
7115 {
7116         struct i40e_ring *tx_ring, *rx_ring;
7117         struct i40e_pf *pf = vsi->back;
7118         int i;
7119
7120         /* Set basic values in the rings to be used later during open() */
7121         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7122                 /* allocate space for both Tx and Rx in one shot */
7123                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
7124                 if (!tx_ring)
7125                         goto err_out;
7126
7127                 tx_ring->queue_index = i;
7128                 tx_ring->reg_idx = vsi->base_queue + i;
7129                 tx_ring->ring_active = false;
7130                 tx_ring->vsi = vsi;
7131                 tx_ring->netdev = vsi->netdev;
7132                 tx_ring->dev = &pf->pdev->dev;
7133                 tx_ring->count = vsi->num_desc;
7134                 tx_ring->size = 0;
7135                 tx_ring->dcb_tc = 0;
7136                 if (vsi->back->flags & I40E_FLAG_WB_ON_ITR_CAPABLE)
7137                         tx_ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
7138                 if (vsi->back->flags & I40E_FLAG_OUTER_UDP_CSUM_CAPABLE)
7139                         tx_ring->flags |= I40E_TXR_FLAGS_OUTER_UDP_CSUM;
7140                 vsi->tx_rings[i] = tx_ring;
7141
7142                 rx_ring = &tx_ring[1];
7143                 rx_ring->queue_index = i;
7144                 rx_ring->reg_idx = vsi->base_queue + i;
7145                 rx_ring->ring_active = false;
7146                 rx_ring->vsi = vsi;
7147                 rx_ring->netdev = vsi->netdev;
7148                 rx_ring->dev = &pf->pdev->dev;
7149                 rx_ring->count = vsi->num_desc;
7150                 rx_ring->size = 0;
7151                 rx_ring->dcb_tc = 0;
7152                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
7153                         set_ring_16byte_desc_enabled(rx_ring);
7154                 else
7155                         clear_ring_16byte_desc_enabled(rx_ring);
7156                 vsi->rx_rings[i] = rx_ring;
7157         }
7158
7159         return 0;
7160
7161 err_out:
7162         i40e_vsi_clear_rings(vsi);
7163         return -ENOMEM;
7164 }
7165
7166 /**
7167  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
7168  * @pf: board private structure
7169  * @vectors: the number of MSI-X vectors to request
7170  *
7171  * Returns the number of vectors reserved, or error
7172  **/
7173 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
7174 {
7175         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
7176                                         I40E_MIN_MSIX, vectors);
7177         if (vectors < 0) {
7178                 dev_info(&pf->pdev->dev,
7179                          "MSI-X vector reservation failed: %d\n", vectors);
7180                 vectors = 0;
7181         }
7182
7183         return vectors;
7184 }
7185
7186 /**
7187  * i40e_init_msix - Setup the MSIX capability
7188  * @pf: board private structure
7189  *
7190  * Work with the OS to set up the MSIX vectors needed.
7191  *
7192  * Returns the number of vectors reserved or negative on failure
7193  **/
7194 static int i40e_init_msix(struct i40e_pf *pf)
7195 {
7196         struct i40e_hw *hw = &pf->hw;
7197         int vectors_left;
7198         int v_budget, i;
7199         int v_actual;
7200
7201         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
7202                 return -ENODEV;
7203
7204         /* The number of vectors we'll request will be comprised of:
7205          *   - Add 1 for "other" cause for Admin Queue events, etc.
7206          *   - The number of LAN queue pairs
7207          *      - Queues being used for RSS.
7208          *              We don't need as many as max_rss_size vectors.
7209          *              use rss_size instead in the calculation since that
7210          *              is governed by number of cpus in the system.
7211          *      - assumes symmetric Tx/Rx pairing
7212          *   - The number of VMDq pairs
7213 #ifdef I40E_FCOE
7214          *   - The number of FCOE qps.
7215 #endif
7216          * Once we count this up, try the request.
7217          *
7218          * If we can't get what we want, we'll simplify to nearly nothing
7219          * and try again.  If that still fails, we punt.
7220          */
7221         vectors_left = hw->func_caps.num_msix_vectors;
7222         v_budget = 0;
7223
7224         /* reserve one vector for miscellaneous handler */
7225         if (vectors_left) {
7226                 v_budget++;
7227                 vectors_left--;
7228         }
7229
7230         /* reserve vectors for the main PF traffic queues */
7231         pf->num_lan_msix = min_t(int, num_online_cpus(), vectors_left);
7232         vectors_left -= pf->num_lan_msix;
7233         v_budget += pf->num_lan_msix;
7234
7235         /* reserve one vector for sideband flow director */
7236         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7237                 if (vectors_left) {
7238                         v_budget++;
7239                         vectors_left--;
7240                 } else {
7241                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7242                 }
7243         }
7244
7245 #ifdef I40E_FCOE
7246         /* can we reserve enough for FCoE? */
7247         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7248                 if (!vectors_left)
7249                         pf->num_fcoe_msix = 0;
7250                 else if (vectors_left >= pf->num_fcoe_qps)
7251                         pf->num_fcoe_msix = pf->num_fcoe_qps;
7252                 else
7253                         pf->num_fcoe_msix = 1;
7254                 v_budget += pf->num_fcoe_msix;
7255                 vectors_left -= pf->num_fcoe_msix;
7256         }
7257
7258 #endif
7259         /* any vectors left over go for VMDq support */
7260         if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
7261                 int vmdq_vecs_wanted = pf->num_vmdq_vsis * pf->num_vmdq_qps;
7262                 int vmdq_vecs = min_t(int, vectors_left, vmdq_vecs_wanted);
7263
7264                 /* if we're short on vectors for what's desired, we limit
7265                  * the queues per vmdq.  If this is still more than are
7266                  * available, the user will need to change the number of
7267                  * queues/vectors used by the PF later with the ethtool
7268                  * channels command
7269                  */
7270                 if (vmdq_vecs < vmdq_vecs_wanted)
7271                         pf->num_vmdq_qps = 1;
7272                 pf->num_vmdq_msix = pf->num_vmdq_qps;
7273
7274                 v_budget += vmdq_vecs;
7275                 vectors_left -= vmdq_vecs;
7276         }
7277
7278         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
7279                                    GFP_KERNEL);
7280         if (!pf->msix_entries)
7281                 return -ENOMEM;
7282
7283         for (i = 0; i < v_budget; i++)
7284                 pf->msix_entries[i].entry = i;
7285         v_actual = i40e_reserve_msix_vectors(pf, v_budget);
7286
7287         if (v_actual != v_budget) {
7288                 /* If we have limited resources, we will start with no vectors
7289                  * for the special features and then allocate vectors to some
7290                  * of these features based on the policy and at the end disable
7291                  * the features that did not get any vectors.
7292                  */
7293 #ifdef I40E_FCOE
7294                 pf->num_fcoe_qps = 0;
7295                 pf->num_fcoe_msix = 0;
7296 #endif
7297                 pf->num_vmdq_msix = 0;
7298         }
7299
7300         if (v_actual < I40E_MIN_MSIX) {
7301                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
7302                 kfree(pf->msix_entries);
7303                 pf->msix_entries = NULL;
7304                 return -ENODEV;
7305
7306         } else if (v_actual == I40E_MIN_MSIX) {
7307                 /* Adjust for minimal MSIX use */
7308                 pf->num_vmdq_vsis = 0;
7309                 pf->num_vmdq_qps = 0;
7310                 pf->num_lan_qps = 1;
7311                 pf->num_lan_msix = 1;
7312
7313         } else if (v_actual != v_budget) {
7314                 int vec;
7315
7316                 /* reserve the misc vector */
7317                 vec = v_actual - 1;
7318
7319                 /* Scale vector usage down */
7320                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
7321                 pf->num_vmdq_vsis = 1;
7322                 pf->num_vmdq_qps = 1;
7323                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7324
7325                 /* partition out the remaining vectors */
7326                 switch (vec) {
7327                 case 2:
7328                         pf->num_lan_msix = 1;
7329                         break;
7330                 case 3:
7331 #ifdef I40E_FCOE
7332                         /* give one vector to FCoE */
7333                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7334                                 pf->num_lan_msix = 1;
7335                                 pf->num_fcoe_msix = 1;
7336                         }
7337 #else
7338                         pf->num_lan_msix = 2;
7339 #endif
7340                         break;
7341                 default:
7342 #ifdef I40E_FCOE
7343                         /* give one vector to FCoE */
7344                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7345                                 pf->num_fcoe_msix = 1;
7346                                 vec--;
7347                         }
7348 #endif
7349                         /* give the rest to the PF */
7350                         pf->num_lan_msix = min_t(int, vec, pf->num_lan_qps);
7351                         break;
7352                 }
7353         }
7354
7355         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7356             (pf->num_vmdq_msix == 0)) {
7357                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
7358                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
7359         }
7360 #ifdef I40E_FCOE
7361
7362         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
7363                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
7364                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
7365         }
7366 #endif
7367         return v_actual;
7368 }
7369
7370 /**
7371  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7372  * @vsi: the VSI being configured
7373  * @v_idx: index of the vector in the vsi struct
7374  *
7375  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
7376  **/
7377 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
7378 {
7379         struct i40e_q_vector *q_vector;
7380
7381         /* allocate q_vector */
7382         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
7383         if (!q_vector)
7384                 return -ENOMEM;
7385
7386         q_vector->vsi = vsi;
7387         q_vector->v_idx = v_idx;
7388         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
7389         if (vsi->netdev)
7390                 netif_napi_add(vsi->netdev, &q_vector->napi,
7391                                i40e_napi_poll, NAPI_POLL_WEIGHT);
7392
7393         q_vector->rx.latency_range = I40E_LOW_LATENCY;
7394         q_vector->tx.latency_range = I40E_LOW_LATENCY;
7395
7396         /* tie q_vector and vsi together */
7397         vsi->q_vectors[v_idx] = q_vector;
7398
7399         return 0;
7400 }
7401
7402 /**
7403  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
7404  * @vsi: the VSI being configured
7405  *
7406  * We allocate one q_vector per queue interrupt.  If allocation fails we
7407  * return -ENOMEM.
7408  **/
7409 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
7410 {
7411         struct i40e_pf *pf = vsi->back;
7412         int v_idx, num_q_vectors;
7413         int err;
7414
7415         /* if not MSIX, give the one vector only to the LAN VSI */
7416         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7417                 num_q_vectors = vsi->num_q_vectors;
7418         else if (vsi == pf->vsi[pf->lan_vsi])
7419                 num_q_vectors = 1;
7420         else
7421                 return -EINVAL;
7422
7423         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
7424                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
7425                 if (err)
7426                         goto err_out;
7427         }
7428
7429         return 0;
7430
7431 err_out:
7432         while (v_idx--)
7433                 i40e_free_q_vector(vsi, v_idx);
7434
7435         return err;
7436 }
7437
7438 /**
7439  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
7440  * @pf: board private structure to initialize
7441  **/
7442 static int i40e_init_interrupt_scheme(struct i40e_pf *pf)
7443 {
7444         int vectors = 0;
7445         ssize_t size;
7446
7447         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7448                 vectors = i40e_init_msix(pf);
7449                 if (vectors < 0) {
7450                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
7451 #ifdef I40E_FCOE
7452                                        I40E_FLAG_FCOE_ENABLED   |
7453 #endif
7454                                        I40E_FLAG_RSS_ENABLED    |
7455                                        I40E_FLAG_DCB_CAPABLE    |
7456                                        I40E_FLAG_SRIOV_ENABLED  |
7457                                        I40E_FLAG_FD_SB_ENABLED  |
7458                                        I40E_FLAG_FD_ATR_ENABLED |
7459                                        I40E_FLAG_VMDQ_ENABLED);
7460
7461                         /* rework the queue expectations without MSIX */
7462                         i40e_determine_queue_usage(pf);
7463                 }
7464         }
7465
7466         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
7467             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
7468                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
7469                 vectors = pci_enable_msi(pf->pdev);
7470                 if (vectors < 0) {
7471                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
7472                                  vectors);
7473                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
7474                 }
7475                 vectors = 1;  /* one MSI or Legacy vector */
7476         }
7477
7478         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
7479                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
7480
7481         /* set up vector assignment tracking */
7482         size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
7483         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7484         if (!pf->irq_pile) {
7485                 dev_err(&pf->pdev->dev, "error allocating irq_pile memory\n");
7486                 return -ENOMEM;
7487         }
7488         pf->irq_pile->num_entries = vectors;
7489         pf->irq_pile->search_hint = 0;
7490
7491         /* track first vector for misc interrupts, ignore return */
7492         (void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
7493
7494         return 0;
7495 }
7496
7497 /**
7498  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
7499  * @pf: board private structure
7500  *
7501  * This sets up the handler for MSIX 0, which is used to manage the
7502  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
7503  * when in MSI or Legacy interrupt mode.
7504  **/
7505 static int i40e_setup_misc_vector(struct i40e_pf *pf)
7506 {
7507         struct i40e_hw *hw = &pf->hw;
7508         int err = 0;
7509
7510         /* Only request the irq if this is the first time through, and
7511          * not when we're rebuilding after a Reset
7512          */
7513         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7514                 err = request_irq(pf->msix_entries[0].vector,
7515                                   i40e_intr, 0, pf->int_name, pf);
7516                 if (err) {
7517                         dev_info(&pf->pdev->dev,
7518                                  "request_irq for %s failed: %d\n",
7519                                  pf->int_name, err);
7520                         return -EFAULT;
7521                 }
7522         }
7523
7524         i40e_enable_misc_int_causes(pf);
7525
7526         /* associate no queues to the misc vector */
7527         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
7528         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
7529
7530         i40e_flush(hw);
7531
7532         i40e_irq_dynamic_enable_icr0(pf);
7533
7534         return err;
7535 }
7536
7537 /**
7538  * i40e_config_rss_aq - Prepare for RSS using AQ commands
7539  * @vsi: vsi structure
7540  * @seed: RSS hash seed
7541  **/
7542 static int i40e_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed)
7543 {
7544         struct i40e_aqc_get_set_rss_key_data rss_key;
7545         struct i40e_pf *pf = vsi->back;
7546         struct i40e_hw *hw = &pf->hw;
7547         bool pf_lut = false;
7548         u8 *rss_lut;
7549         int ret, i;
7550
7551         memset(&rss_key, 0, sizeof(rss_key));
7552         memcpy(&rss_key, seed, sizeof(rss_key));
7553
7554         rss_lut = kzalloc(pf->rss_table_size, GFP_KERNEL);
7555         if (!rss_lut)
7556                 return -ENOMEM;
7557
7558         /* Populate the LUT with max no. of queues in round robin fashion */
7559         for (i = 0; i < vsi->rss_table_size; i++)
7560                 rss_lut[i] = i % vsi->rss_size;
7561
7562         ret = i40e_aq_set_rss_key(hw, vsi->id, &rss_key);
7563         if (ret) {
7564                 dev_info(&pf->pdev->dev,
7565                          "Cannot set RSS key, err %s aq_err %s\n",
7566                          i40e_stat_str(&pf->hw, ret),
7567                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7568                 return ret;
7569         }
7570
7571         if (vsi->type == I40E_VSI_MAIN)
7572                 pf_lut = true;
7573
7574         ret = i40e_aq_set_rss_lut(hw, vsi->id, pf_lut, rss_lut,
7575                                   vsi->rss_table_size);
7576         if (ret)
7577                 dev_info(&pf->pdev->dev,
7578                          "Cannot set RSS lut, err %s aq_err %s\n",
7579                          i40e_stat_str(&pf->hw, ret),
7580                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7581
7582         return ret;
7583 }
7584
7585 /**
7586  * i40e_vsi_config_rss - Prepare for VSI(VMDq) RSS if used
7587  * @vsi: VSI structure
7588  **/
7589 static int i40e_vsi_config_rss(struct i40e_vsi *vsi)
7590 {
7591         u8 seed[I40E_HKEY_ARRAY_SIZE];
7592         struct i40e_pf *pf = vsi->back;
7593
7594         netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
7595         vsi->rss_size = min_t(int, pf->rss_size, vsi->num_queue_pairs);
7596
7597         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
7598                 return i40e_config_rss_aq(vsi, seed);
7599
7600         return 0;
7601 }
7602
7603 /**
7604  * i40e_config_rss_reg - Prepare for RSS if used
7605  * @pf: board private structure
7606  * @seed: RSS hash seed
7607  **/
7608 static int i40e_config_rss_reg(struct i40e_pf *pf, const u8 *seed)
7609 {
7610         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7611         struct i40e_hw *hw = &pf->hw;
7612         u32 *seed_dw = (u32 *)seed;
7613         u32 current_queue = 0;
7614         u32 lut = 0;
7615         int i, j;
7616
7617         /* Fill out hash function seed */
7618         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
7619                 wr32(hw, I40E_PFQF_HKEY(i), seed_dw[i]);
7620
7621         for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++) {
7622                 lut = 0;
7623                 for (j = 0; j < 4; j++) {
7624                         if (current_queue == vsi->rss_size)
7625                                 current_queue = 0;
7626                         lut |= ((current_queue) << (8 * j));
7627                         current_queue++;
7628                 }
7629                 wr32(&pf->hw, I40E_PFQF_HLUT(i), lut);
7630         }
7631         i40e_flush(hw);
7632
7633         return 0;
7634 }
7635
7636 /**
7637  * i40e_config_rss - Prepare for RSS if used
7638  * @pf: board private structure
7639  **/
7640 static int i40e_config_rss(struct i40e_pf *pf)
7641 {
7642         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7643         u8 seed[I40E_HKEY_ARRAY_SIZE];
7644         struct i40e_hw *hw = &pf->hw;
7645         u32 reg_val;
7646         u64 hena;
7647
7648         netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
7649
7650         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
7651         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
7652                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
7653         hena |= i40e_pf_get_default_rss_hena(pf);
7654
7655         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
7656         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
7657
7658         vsi->rss_size = min_t(int, pf->rss_size, vsi->num_queue_pairs);
7659
7660         /* Determine the RSS table size based on the hardware capabilities */
7661         reg_val = rd32(hw, I40E_PFQF_CTL_0);
7662         reg_val = (pf->rss_table_size == 512) ?
7663                         (reg_val | I40E_PFQF_CTL_0_HASHLUTSIZE_512) :
7664                         (reg_val & ~I40E_PFQF_CTL_0_HASHLUTSIZE_512);
7665         wr32(hw, I40E_PFQF_CTL_0, reg_val);
7666
7667         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
7668                 return i40e_config_rss_aq(pf->vsi[pf->lan_vsi], seed);
7669         else
7670                 return i40e_config_rss_reg(pf, seed);
7671 }
7672
7673 /**
7674  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
7675  * @pf: board private structure
7676  * @queue_count: the requested queue count for rss.
7677  *
7678  * returns 0 if rss is not enabled, if enabled returns the final rss queue
7679  * count which may be different from the requested queue count.
7680  **/
7681 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
7682 {
7683         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7684         int new_rss_size;
7685
7686         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
7687                 return 0;
7688
7689         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
7690
7691         if (queue_count != vsi->num_queue_pairs) {
7692                 vsi->req_queue_pairs = queue_count;
7693                 i40e_prep_for_reset(pf);
7694
7695                 pf->rss_size = new_rss_size;
7696
7697                 i40e_reset_and_rebuild(pf, true);
7698                 i40e_config_rss(pf);
7699         }
7700         dev_info(&pf->pdev->dev, "RSS count:  %d\n", pf->rss_size);
7701         return pf->rss_size;
7702 }
7703
7704 /**
7705  * i40e_get_npar_bw_setting - Retrieve BW settings for this PF partition
7706  * @pf: board private structure
7707  **/
7708 i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf)
7709 {
7710         i40e_status status;
7711         bool min_valid, max_valid;
7712         u32 max_bw, min_bw;
7713
7714         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
7715                                            &min_valid, &max_valid);
7716
7717         if (!status) {
7718                 if (min_valid)
7719                         pf->npar_min_bw = min_bw;
7720                 if (max_valid)
7721                         pf->npar_max_bw = max_bw;
7722         }
7723
7724         return status;
7725 }
7726
7727 /**
7728  * i40e_set_npar_bw_setting - Set BW settings for this PF partition
7729  * @pf: board private structure
7730  **/
7731 i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf)
7732 {
7733         struct i40e_aqc_configure_partition_bw_data bw_data;
7734         i40e_status status;
7735
7736         /* Set the valid bit for this PF */
7737         bw_data.pf_valid_bits = cpu_to_le16(BIT(pf->hw.pf_id));
7738         bw_data.max_bw[pf->hw.pf_id] = pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK;
7739         bw_data.min_bw[pf->hw.pf_id] = pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK;
7740
7741         /* Set the new bandwidths */
7742         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
7743
7744         return status;
7745 }
7746
7747 /**
7748  * i40e_commit_npar_bw_setting - Commit BW settings for this PF partition
7749  * @pf: board private structure
7750  **/
7751 i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf)
7752 {
7753         /* Commit temporary BW setting to permanent NVM image */
7754         enum i40e_admin_queue_err last_aq_status;
7755         i40e_status ret;
7756         u16 nvm_word;
7757
7758         if (pf->hw.partition_id != 1) {
7759                 dev_info(&pf->pdev->dev,
7760                          "Commit BW only works on partition 1! This is partition %d",
7761                          pf->hw.partition_id);
7762                 ret = I40E_NOT_SUPPORTED;
7763                 goto bw_commit_out;
7764         }
7765
7766         /* Acquire NVM for read access */
7767         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
7768         last_aq_status = pf->hw.aq.asq_last_status;
7769         if (ret) {
7770                 dev_info(&pf->pdev->dev,
7771                          "Cannot acquire NVM for read access, err %s aq_err %s\n",
7772                          i40e_stat_str(&pf->hw, ret),
7773                          i40e_aq_str(&pf->hw, last_aq_status));
7774                 goto bw_commit_out;
7775         }
7776
7777         /* Read word 0x10 of NVM - SW compatibility word 1 */
7778         ret = i40e_aq_read_nvm(&pf->hw,
7779                                I40E_SR_NVM_CONTROL_WORD,
7780                                0x10, sizeof(nvm_word), &nvm_word,
7781                                false, NULL);
7782         /* Save off last admin queue command status before releasing
7783          * the NVM
7784          */
7785         last_aq_status = pf->hw.aq.asq_last_status;
7786         i40e_release_nvm(&pf->hw);
7787         if (ret) {
7788                 dev_info(&pf->pdev->dev, "NVM read error, err %s aq_err %s\n",
7789                          i40e_stat_str(&pf->hw, ret),
7790                          i40e_aq_str(&pf->hw, last_aq_status));
7791                 goto bw_commit_out;
7792         }
7793
7794         /* Wait a bit for NVM release to complete */
7795         msleep(50);
7796
7797         /* Acquire NVM for write access */
7798         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
7799         last_aq_status = pf->hw.aq.asq_last_status;
7800         if (ret) {
7801                 dev_info(&pf->pdev->dev,
7802                          "Cannot acquire NVM for write access, err %s aq_err %s\n",
7803                          i40e_stat_str(&pf->hw, ret),
7804                          i40e_aq_str(&pf->hw, last_aq_status));
7805                 goto bw_commit_out;
7806         }
7807         /* Write it back out unchanged to initiate update NVM,
7808          * which will force a write of the shadow (alt) RAM to
7809          * the NVM - thus storing the bandwidth values permanently.
7810          */
7811         ret = i40e_aq_update_nvm(&pf->hw,
7812                                  I40E_SR_NVM_CONTROL_WORD,
7813                                  0x10, sizeof(nvm_word),
7814                                  &nvm_word, true, NULL);
7815         /* Save off last admin queue command status before releasing
7816          * the NVM
7817          */
7818         last_aq_status = pf->hw.aq.asq_last_status;
7819         i40e_release_nvm(&pf->hw);
7820         if (ret)
7821                 dev_info(&pf->pdev->dev,
7822                          "BW settings NOT SAVED, err %s aq_err %s\n",
7823                          i40e_stat_str(&pf->hw, ret),
7824                          i40e_aq_str(&pf->hw, last_aq_status));
7825 bw_commit_out:
7826
7827         return ret;
7828 }
7829
7830 /**
7831  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
7832  * @pf: board private structure to initialize
7833  *
7834  * i40e_sw_init initializes the Adapter private data structure.
7835  * Fields are initialized based on PCI device information and
7836  * OS network device settings (MTU size).
7837  **/
7838 static int i40e_sw_init(struct i40e_pf *pf)
7839 {
7840         int err = 0;
7841         int size;
7842
7843         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
7844                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
7845         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
7846         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
7847                 if (I40E_DEBUG_USER & debug)
7848                         pf->hw.debug_mask = debug;
7849                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
7850                                                 I40E_DEFAULT_MSG_ENABLE);
7851         }
7852
7853         /* Set default capability flags */
7854         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
7855                     I40E_FLAG_MSI_ENABLED     |
7856                     I40E_FLAG_MSIX_ENABLED;
7857
7858         if (iommu_present(&pci_bus_type))
7859                 pf->flags |= I40E_FLAG_RX_PS_ENABLED;
7860         else
7861                 pf->flags |= I40E_FLAG_RX_1BUF_ENABLED;
7862
7863         /* Set default ITR */
7864         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
7865         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
7866
7867         /* Depending on PF configurations, it is possible that the RSS
7868          * maximum might end up larger than the available queues
7869          */
7870         pf->rss_size_max = BIT(pf->hw.func_caps.rss_table_entry_width);
7871         pf->rss_size = 1;
7872         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
7873         pf->rss_size_max = min_t(int, pf->rss_size_max,
7874                                  pf->hw.func_caps.num_tx_qp);
7875         if (pf->hw.func_caps.rss) {
7876                 pf->flags |= I40E_FLAG_RSS_ENABLED;
7877                 pf->rss_size = min_t(int, pf->rss_size_max, num_online_cpus());
7878         }
7879
7880         /* MFP mode enabled */
7881         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.flex10_enable) {
7882                 pf->flags |= I40E_FLAG_MFP_ENABLED;
7883                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
7884                 if (i40e_get_npar_bw_setting(pf))
7885                         dev_warn(&pf->pdev->dev,
7886                                  "Could not get NPAR bw settings\n");
7887                 else
7888                         dev_info(&pf->pdev->dev,
7889                                  "Min BW = %8.8x, Max BW = %8.8x\n",
7890                                  pf->npar_min_bw, pf->npar_max_bw);
7891         }
7892
7893         /* FW/NVM is not yet fixed in this regard */
7894         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
7895             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
7896                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
7897                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
7898                 if (!(pf->flags & I40E_FLAG_MFP_ENABLED)) {
7899                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7900                 } else {
7901                         dev_info(&pf->pdev->dev,
7902                                  "Flow Director Sideband mode Disabled in MFP mode\n");
7903                 }
7904                 pf->fdir_pf_filter_count =
7905                                  pf->hw.func_caps.fd_filters_guaranteed;
7906                 pf->hw.fdir_shared_filter_count =
7907                                  pf->hw.func_caps.fd_filters_best_effort;
7908         }
7909
7910         if (pf->hw.func_caps.vmdq) {
7911                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
7912                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
7913         }
7914
7915 #ifdef I40E_FCOE
7916         err = i40e_init_pf_fcoe(pf);
7917         if (err)
7918                 dev_info(&pf->pdev->dev, "init_pf_fcoe failed: %d\n", err);
7919
7920 #endif /* I40E_FCOE */
7921 #ifdef CONFIG_PCI_IOV
7922         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
7923                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
7924                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
7925                 pf->num_req_vfs = min_t(int,
7926                                         pf->hw.func_caps.num_vfs,
7927                                         I40E_MAX_VF_COUNT);
7928         }
7929 #endif /* CONFIG_PCI_IOV */
7930         if (pf->hw.mac.type == I40E_MAC_X722) {
7931                 pf->flags |= I40E_FLAG_RSS_AQ_CAPABLE |
7932                              I40E_FLAG_128_QP_RSS_CAPABLE |
7933                              I40E_FLAG_HW_ATR_EVICT_CAPABLE |
7934                              I40E_FLAG_OUTER_UDP_CSUM_CAPABLE |
7935                              I40E_FLAG_WB_ON_ITR_CAPABLE |
7936                              I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE;
7937         }
7938         pf->eeprom_version = 0xDEAD;
7939         pf->lan_veb = I40E_NO_VEB;
7940         pf->lan_vsi = I40E_NO_VSI;
7941
7942         /* set up queue assignment tracking */
7943         size = sizeof(struct i40e_lump_tracking)
7944                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
7945         pf->qp_pile = kzalloc(size, GFP_KERNEL);
7946         if (!pf->qp_pile) {
7947                 err = -ENOMEM;
7948                 goto sw_init_done;
7949         }
7950         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
7951         pf->qp_pile->search_hint = 0;
7952
7953         pf->tx_timeout_recovery_level = 1;
7954
7955         mutex_init(&pf->switch_mutex);
7956
7957         /* If NPAR is enabled nudge the Tx scheduler */
7958         if (pf->hw.func_caps.npar_enable && (!i40e_get_npar_bw_setting(pf)))
7959                 i40e_set_npar_bw_setting(pf);
7960
7961 sw_init_done:
7962         return err;
7963 }
7964
7965 /**
7966  * i40e_set_ntuple - set the ntuple feature flag and take action
7967  * @pf: board private structure to initialize
7968  * @features: the feature set that the stack is suggesting
7969  *
7970  * returns a bool to indicate if reset needs to happen
7971  **/
7972 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
7973 {
7974         bool need_reset = false;
7975
7976         /* Check if Flow Director n-tuple support was enabled or disabled.  If
7977          * the state changed, we need to reset.
7978          */
7979         if (features & NETIF_F_NTUPLE) {
7980                 /* Enable filters and mark for reset */
7981                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
7982                         need_reset = true;
7983                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7984         } else {
7985                 /* turn off filters, mark for reset and clear SW filter list */
7986                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7987                         need_reset = true;
7988                         i40e_fdir_filter_exit(pf);
7989                 }
7990                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7991                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
7992                 /* reset fd counters */
7993                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
7994                 pf->fdir_pf_active_filters = 0;
7995                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
7996                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
7997                         dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
7998                 /* if ATR was auto disabled it can be re-enabled. */
7999                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
8000                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
8001                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
8002         }
8003         return need_reset;
8004 }
8005
8006 /**
8007  * i40e_set_features - set the netdev feature flags
8008  * @netdev: ptr to the netdev being adjusted
8009  * @features: the feature set that the stack is suggesting
8010  **/
8011 static int i40e_set_features(struct net_device *netdev,
8012                              netdev_features_t features)
8013 {
8014         struct i40e_netdev_priv *np = netdev_priv(netdev);
8015         struct i40e_vsi *vsi = np->vsi;
8016         struct i40e_pf *pf = vsi->back;
8017         bool need_reset;
8018
8019         if (features & NETIF_F_HW_VLAN_CTAG_RX)
8020                 i40e_vlan_stripping_enable(vsi);
8021         else
8022                 i40e_vlan_stripping_disable(vsi);
8023
8024         need_reset = i40e_set_ntuple(pf, features);
8025
8026         if (need_reset)
8027                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8028
8029         return 0;
8030 }
8031
8032 #ifdef CONFIG_I40E_VXLAN
8033 /**
8034  * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
8035  * @pf: board private structure
8036  * @port: The UDP port to look up
8037  *
8038  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
8039  **/
8040 static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
8041 {
8042         u8 i;
8043
8044         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
8045                 if (pf->vxlan_ports[i] == port)
8046                         return i;
8047         }
8048
8049         return i;
8050 }
8051
8052 /**
8053  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
8054  * @netdev: This physical port's netdev
8055  * @sa_family: Socket Family that VXLAN is notifying us about
8056  * @port: New UDP port number that VXLAN started listening to
8057  **/
8058 static void i40e_add_vxlan_port(struct net_device *netdev,
8059                                 sa_family_t sa_family, __be16 port)
8060 {
8061         struct i40e_netdev_priv *np = netdev_priv(netdev);
8062         struct i40e_vsi *vsi = np->vsi;
8063         struct i40e_pf *pf = vsi->back;
8064         u8 next_idx;
8065         u8 idx;
8066
8067         if (sa_family == AF_INET6)
8068                 return;
8069
8070         idx = i40e_get_vxlan_port_idx(pf, port);
8071
8072         /* Check if port already exists */
8073         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8074                 netdev_info(netdev, "vxlan port %d already offloaded\n",
8075                             ntohs(port));
8076                 return;
8077         }
8078
8079         /* Now check if there is space to add the new port */
8080         next_idx = i40e_get_vxlan_port_idx(pf, 0);
8081
8082         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8083                 netdev_info(netdev, "maximum number of vxlan UDP ports reached, not adding port %d\n",
8084                             ntohs(port));
8085                 return;
8086         }
8087
8088         /* New port: add it and mark its index in the bitmap */
8089         pf->vxlan_ports[next_idx] = port;
8090         pf->pending_vxlan_bitmap |= BIT_ULL(next_idx);
8091         pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
8092 }
8093
8094 /**
8095  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
8096  * @netdev: This physical port's netdev
8097  * @sa_family: Socket Family that VXLAN is notifying us about
8098  * @port: UDP port number that VXLAN stopped listening to
8099  **/
8100 static void i40e_del_vxlan_port(struct net_device *netdev,
8101                                 sa_family_t sa_family, __be16 port)
8102 {
8103         struct i40e_netdev_priv *np = netdev_priv(netdev);
8104         struct i40e_vsi *vsi = np->vsi;
8105         struct i40e_pf *pf = vsi->back;
8106         u8 idx;
8107
8108         if (sa_family == AF_INET6)
8109                 return;
8110
8111         idx = i40e_get_vxlan_port_idx(pf, port);
8112
8113         /* Check if port already exists */
8114         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8115                 /* if port exists, set it to 0 (mark for deletion)
8116                  * and make it pending
8117                  */
8118                 pf->vxlan_ports[idx] = 0;
8119                 pf->pending_vxlan_bitmap |= BIT_ULL(idx);
8120                 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
8121
8122                 dev_info(&pf->pdev->dev, "deleting vxlan port %d\n",
8123                          ntohs(port));
8124         } else {
8125                 netdev_warn(netdev, "vxlan port %d was not found, not deleting\n",
8126                             ntohs(port));
8127         }
8128 }
8129
8130 #endif
8131 static int i40e_get_phys_port_id(struct net_device *netdev,
8132                                  struct netdev_phys_item_id *ppid)
8133 {
8134         struct i40e_netdev_priv *np = netdev_priv(netdev);
8135         struct i40e_pf *pf = np->vsi->back;
8136         struct i40e_hw *hw = &pf->hw;
8137
8138         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
8139                 return -EOPNOTSUPP;
8140
8141         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
8142         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
8143
8144         return 0;
8145 }
8146
8147 /**
8148  * i40e_ndo_fdb_add - add an entry to the hardware database
8149  * @ndm: the input from the stack
8150  * @tb: pointer to array of nladdr (unused)
8151  * @dev: the net device pointer
8152  * @addr: the MAC address entry being added
8153  * @flags: instructions from stack about fdb operation
8154  */
8155 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
8156                             struct net_device *dev,
8157                             const unsigned char *addr, u16 vid,
8158                             u16 flags)
8159 {
8160         struct i40e_netdev_priv *np = netdev_priv(dev);
8161         struct i40e_pf *pf = np->vsi->back;
8162         int err = 0;
8163
8164         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
8165                 return -EOPNOTSUPP;
8166
8167         if (vid) {
8168                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
8169                 return -EINVAL;
8170         }
8171
8172         /* Hardware does not support aging addresses so if a
8173          * ndm_state is given only allow permanent addresses
8174          */
8175         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
8176                 netdev_info(dev, "FDB only supports static addresses\n");
8177                 return -EINVAL;
8178         }
8179
8180         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
8181                 err = dev_uc_add_excl(dev, addr);
8182         else if (is_multicast_ether_addr(addr))
8183                 err = dev_mc_add_excl(dev, addr);
8184         else
8185                 err = -EINVAL;
8186
8187         /* Only return duplicate errors if NLM_F_EXCL is set */
8188         if (err == -EEXIST && !(flags & NLM_F_EXCL))
8189                 err = 0;
8190
8191         return err;
8192 }
8193
8194 /**
8195  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
8196  * @dev: the netdev being configured
8197  * @nlh: RTNL message
8198  *
8199  * Inserts a new hardware bridge if not already created and
8200  * enables the bridging mode requested (VEB or VEPA). If the
8201  * hardware bridge has already been inserted and the request
8202  * is to change the mode then that requires a PF reset to
8203  * allow rebuild of the components with required hardware
8204  * bridge mode enabled.
8205  **/
8206 static int i40e_ndo_bridge_setlink(struct net_device *dev,
8207                                    struct nlmsghdr *nlh,
8208                                    u16 flags)
8209 {
8210         struct i40e_netdev_priv *np = netdev_priv(dev);
8211         struct i40e_vsi *vsi = np->vsi;
8212         struct i40e_pf *pf = vsi->back;
8213         struct i40e_veb *veb = NULL;
8214         struct nlattr *attr, *br_spec;
8215         int i, rem;
8216
8217         /* Only for PF VSI for now */
8218         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8219                 return -EOPNOTSUPP;
8220
8221         /* Find the HW bridge for PF VSI */
8222         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8223                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8224                         veb = pf->veb[i];
8225         }
8226
8227         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
8228
8229         nla_for_each_nested(attr, br_spec, rem) {
8230                 __u16 mode;
8231
8232                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
8233                         continue;
8234
8235                 mode = nla_get_u16(attr);
8236                 if ((mode != BRIDGE_MODE_VEPA) &&
8237                     (mode != BRIDGE_MODE_VEB))
8238                         return -EINVAL;
8239
8240                 /* Insert a new HW bridge */
8241                 if (!veb) {
8242                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8243                                              vsi->tc_config.enabled_tc);
8244                         if (veb) {
8245                                 veb->bridge_mode = mode;
8246                                 i40e_config_bridge_mode(veb);
8247                         } else {
8248                                 /* No Bridge HW offload available */
8249                                 return -ENOENT;
8250                         }
8251                         break;
8252                 } else if (mode != veb->bridge_mode) {
8253                         /* Existing HW bridge but different mode needs reset */
8254                         veb->bridge_mode = mode;
8255                         /* TODO: If no VFs or VMDq VSIs, disallow VEB mode */
8256                         if (mode == BRIDGE_MODE_VEB)
8257                                 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
8258                         else
8259                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
8260                         i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8261                         break;
8262                 }
8263         }
8264
8265         return 0;
8266 }
8267
8268 /**
8269  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
8270  * @skb: skb buff
8271  * @pid: process id
8272  * @seq: RTNL message seq #
8273  * @dev: the netdev being configured
8274  * @filter_mask: unused
8275  *
8276  * Return the mode in which the hardware bridge is operating in
8277  * i.e VEB or VEPA.
8278  **/
8279 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
8280                                    struct net_device *dev,
8281                                    u32 filter_mask, int nlflags)
8282 {
8283         struct i40e_netdev_priv *np = netdev_priv(dev);
8284         struct i40e_vsi *vsi = np->vsi;
8285         struct i40e_pf *pf = vsi->back;
8286         struct i40e_veb *veb = NULL;
8287         int i;
8288
8289         /* Only for PF VSI for now */
8290         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8291                 return -EOPNOTSUPP;
8292
8293         /* Find the HW bridge for the PF VSI */
8294         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8295                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8296                         veb = pf->veb[i];
8297         }
8298
8299         if (!veb)
8300                 return 0;
8301
8302         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
8303                                        nlflags, 0, 0, filter_mask, NULL);
8304 }
8305
8306 #define I40E_MAX_TUNNEL_HDR_LEN 80
8307 /**
8308  * i40e_features_check - Validate encapsulated packet conforms to limits
8309  * @skb: skb buff
8310  * @netdev: This physical port's netdev
8311  * @features: Offload features that the stack believes apply
8312  **/
8313 static netdev_features_t i40e_features_check(struct sk_buff *skb,
8314                                              struct net_device *dev,
8315                                              netdev_features_t features)
8316 {
8317         if (skb->encapsulation &&
8318             (skb_inner_mac_header(skb) - skb_transport_header(skb) >
8319              I40E_MAX_TUNNEL_HDR_LEN))
8320                 return features & ~(NETIF_F_ALL_CSUM | NETIF_F_GSO_MASK);
8321
8322         return features;
8323 }
8324
8325 static const struct net_device_ops i40e_netdev_ops = {
8326         .ndo_open               = i40e_open,
8327         .ndo_stop               = i40e_close,
8328         .ndo_start_xmit         = i40e_lan_xmit_frame,
8329         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
8330         .ndo_set_rx_mode        = i40e_set_rx_mode,
8331         .ndo_validate_addr      = eth_validate_addr,
8332         .ndo_set_mac_address    = i40e_set_mac,
8333         .ndo_change_mtu         = i40e_change_mtu,
8334         .ndo_do_ioctl           = i40e_ioctl,
8335         .ndo_tx_timeout         = i40e_tx_timeout,
8336         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
8337         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
8338 #ifdef CONFIG_NET_POLL_CONTROLLER
8339         .ndo_poll_controller    = i40e_netpoll,
8340 #endif
8341         .ndo_setup_tc           = i40e_setup_tc,
8342 #ifdef I40E_FCOE
8343         .ndo_fcoe_enable        = i40e_fcoe_enable,
8344         .ndo_fcoe_disable       = i40e_fcoe_disable,
8345 #endif
8346         .ndo_set_features       = i40e_set_features,
8347         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
8348         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
8349         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
8350         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
8351         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
8352         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
8353 #ifdef CONFIG_I40E_VXLAN
8354         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
8355         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
8356 #endif
8357         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
8358         .ndo_fdb_add            = i40e_ndo_fdb_add,
8359         .ndo_features_check     = i40e_features_check,
8360         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
8361         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
8362 };
8363
8364 /**
8365  * i40e_config_netdev - Setup the netdev flags
8366  * @vsi: the VSI being configured
8367  *
8368  * Returns 0 on success, negative value on failure
8369  **/
8370 static int i40e_config_netdev(struct i40e_vsi *vsi)
8371 {
8372         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
8373         struct i40e_pf *pf = vsi->back;
8374         struct i40e_hw *hw = &pf->hw;
8375         struct i40e_netdev_priv *np;
8376         struct net_device *netdev;
8377         u8 mac_addr[ETH_ALEN];
8378         int etherdev_size;
8379
8380         etherdev_size = sizeof(struct i40e_netdev_priv);
8381         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
8382         if (!netdev)
8383                 return -ENOMEM;
8384
8385         vsi->netdev = netdev;
8386         np = netdev_priv(netdev);
8387         np->vsi = vsi;
8388
8389         netdev->hw_enc_features |= NETIF_F_IP_CSUM       |
8390                                   NETIF_F_GSO_UDP_TUNNEL |
8391                                   NETIF_F_TSO;
8392
8393         netdev->features = NETIF_F_SG                  |
8394                            NETIF_F_IP_CSUM             |
8395                            NETIF_F_SCTP_CSUM           |
8396                            NETIF_F_HIGHDMA             |
8397                            NETIF_F_GSO_UDP_TUNNEL      |
8398                            NETIF_F_HW_VLAN_CTAG_TX     |
8399                            NETIF_F_HW_VLAN_CTAG_RX     |
8400                            NETIF_F_HW_VLAN_CTAG_FILTER |
8401                            NETIF_F_IPV6_CSUM           |
8402                            NETIF_F_TSO                 |
8403                            NETIF_F_TSO_ECN             |
8404                            NETIF_F_TSO6                |
8405                            NETIF_F_RXCSUM              |
8406                            NETIF_F_RXHASH              |
8407                            0;
8408
8409         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
8410                 netdev->features |= NETIF_F_NTUPLE;
8411
8412         /* copy netdev features into list of user selectable features */
8413         netdev->hw_features |= netdev->features;
8414
8415         if (vsi->type == I40E_VSI_MAIN) {
8416                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
8417                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
8418                 /* The following steps are necessary to prevent reception
8419                  * of tagged packets - some older NVM configurations load a
8420                  * default a MAC-VLAN filter that accepts any tagged packet
8421                  * which must be replaced by a normal filter.
8422                  */
8423                 if (!i40e_rm_default_mac_filter(vsi, mac_addr))
8424                         i40e_add_filter(vsi, mac_addr,
8425                                         I40E_VLAN_ANY, false, true);
8426         } else {
8427                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
8428                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
8429                          pf->vsi[pf->lan_vsi]->netdev->name);
8430                 random_ether_addr(mac_addr);
8431                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
8432         }
8433         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
8434
8435         ether_addr_copy(netdev->dev_addr, mac_addr);
8436         ether_addr_copy(netdev->perm_addr, mac_addr);
8437         /* vlan gets same features (except vlan offload)
8438          * after any tweaks for specific VSI types
8439          */
8440         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
8441                                                      NETIF_F_HW_VLAN_CTAG_RX |
8442                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
8443         netdev->priv_flags |= IFF_UNICAST_FLT;
8444         netdev->priv_flags |= IFF_SUPP_NOFCS;
8445         /* Setup netdev TC information */
8446         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
8447
8448         netdev->netdev_ops = &i40e_netdev_ops;
8449         netdev->watchdog_timeo = 5 * HZ;
8450         i40e_set_ethtool_ops(netdev);
8451 #ifdef I40E_FCOE
8452         i40e_fcoe_config_netdev(netdev, vsi);
8453 #endif
8454
8455         return 0;
8456 }
8457
8458 /**
8459  * i40e_vsi_delete - Delete a VSI from the switch
8460  * @vsi: the VSI being removed
8461  *
8462  * Returns 0 on success, negative value on failure
8463  **/
8464 static void i40e_vsi_delete(struct i40e_vsi *vsi)
8465 {
8466         /* remove default VSI is not allowed */
8467         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
8468                 return;
8469
8470         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
8471 }
8472
8473 /**
8474  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
8475  * @vsi: the VSI being queried
8476  *
8477  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
8478  **/
8479 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
8480 {
8481         struct i40e_veb *veb;
8482         struct i40e_pf *pf = vsi->back;
8483
8484         /* Uplink is not a bridge so default to VEB */
8485         if (vsi->veb_idx == I40E_NO_VEB)
8486                 return 1;
8487
8488         veb = pf->veb[vsi->veb_idx];
8489         /* Uplink is a bridge in VEPA mode */
8490         if (veb && (veb->bridge_mode & BRIDGE_MODE_VEPA))
8491                 return 0;
8492
8493         /* Uplink is a bridge in VEB mode */
8494         return 1;
8495 }
8496
8497 /**
8498  * i40e_add_vsi - Add a VSI to the switch
8499  * @vsi: the VSI being configured
8500  *
8501  * This initializes a VSI context depending on the VSI type to be added and
8502  * passes it down to the add_vsi aq command.
8503  **/
8504 static int i40e_add_vsi(struct i40e_vsi *vsi)
8505 {
8506         int ret = -ENODEV;
8507         struct i40e_mac_filter *f, *ftmp;
8508         struct i40e_pf *pf = vsi->back;
8509         struct i40e_hw *hw = &pf->hw;
8510         struct i40e_vsi_context ctxt;
8511         u8 enabled_tc = 0x1; /* TC0 enabled */
8512         int f_count = 0;
8513
8514         memset(&ctxt, 0, sizeof(ctxt));
8515         switch (vsi->type) {
8516         case I40E_VSI_MAIN:
8517                 /* The PF's main VSI is already setup as part of the
8518                  * device initialization, so we'll not bother with
8519                  * the add_vsi call, but we will retrieve the current
8520                  * VSI context.
8521                  */
8522                 ctxt.seid = pf->main_vsi_seid;
8523                 ctxt.pf_num = pf->hw.pf_id;
8524                 ctxt.vf_num = 0;
8525                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
8526                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8527                 if (ret) {
8528                         dev_info(&pf->pdev->dev,
8529                                  "couldn't get PF vsi config, err %s aq_err %s\n",
8530                                  i40e_stat_str(&pf->hw, ret),
8531                                  i40e_aq_str(&pf->hw,
8532                                              pf->hw.aq.asq_last_status));
8533                         return -ENOENT;
8534                 }
8535                 vsi->info = ctxt.info;
8536                 vsi->info.valid_sections = 0;
8537
8538                 vsi->seid = ctxt.seid;
8539                 vsi->id = ctxt.vsi_number;
8540
8541                 enabled_tc = i40e_pf_get_tc_map(pf);
8542
8543                 /* MFP mode setup queue map and update VSI */
8544                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
8545                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
8546                         memset(&ctxt, 0, sizeof(ctxt));
8547                         ctxt.seid = pf->main_vsi_seid;
8548                         ctxt.pf_num = pf->hw.pf_id;
8549                         ctxt.vf_num = 0;
8550                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
8551                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
8552                         if (ret) {
8553                                 dev_info(&pf->pdev->dev,
8554                                          "update vsi failed, err %s aq_err %s\n",
8555                                          i40e_stat_str(&pf->hw, ret),
8556                                          i40e_aq_str(&pf->hw,
8557                                                     pf->hw.aq.asq_last_status));
8558                                 ret = -ENOENT;
8559                                 goto err;
8560                         }
8561                         /* update the local VSI info queue map */
8562                         i40e_vsi_update_queue_map(vsi, &ctxt);
8563                         vsi->info.valid_sections = 0;
8564                 } else {
8565                         /* Default/Main VSI is only enabled for TC0
8566                          * reconfigure it to enable all TCs that are
8567                          * available on the port in SFP mode.
8568                          * For MFP case the iSCSI PF would use this
8569                          * flow to enable LAN+iSCSI TC.
8570                          */
8571                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
8572                         if (ret) {
8573                                 dev_info(&pf->pdev->dev,
8574                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %s aq_err %s\n",
8575                                          enabled_tc,
8576                                          i40e_stat_str(&pf->hw, ret),
8577                                          i40e_aq_str(&pf->hw,
8578                                                     pf->hw.aq.asq_last_status));
8579                                 ret = -ENOENT;
8580                         }
8581                 }
8582                 break;
8583
8584         case I40E_VSI_FDIR:
8585                 ctxt.pf_num = hw->pf_id;
8586                 ctxt.vf_num = 0;
8587                 ctxt.uplink_seid = vsi->uplink_seid;
8588                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8589                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8590                 if ((pf->flags & I40E_FLAG_VEB_MODE_ENABLED) &&
8591                     (i40e_is_vsi_uplink_mode_veb(vsi))) {
8592                         ctxt.info.valid_sections |=
8593                              cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8594                         ctxt.info.switch_id =
8595                            cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8596                 }
8597                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8598                 break;
8599
8600         case I40E_VSI_VMDQ2:
8601                 ctxt.pf_num = hw->pf_id;
8602                 ctxt.vf_num = 0;
8603                 ctxt.uplink_seid = vsi->uplink_seid;
8604                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8605                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
8606
8607                 /* This VSI is connected to VEB so the switch_id
8608                  * should be set to zero by default.
8609                  */
8610                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8611                         ctxt.info.valid_sections |=
8612                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8613                         ctxt.info.switch_id =
8614                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8615                 }
8616
8617                 /* Setup the VSI tx/rx queue map for TC0 only for now */
8618                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8619                 break;
8620
8621         case I40E_VSI_SRIOV:
8622                 ctxt.pf_num = hw->pf_id;
8623                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
8624                 ctxt.uplink_seid = vsi->uplink_seid;
8625                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8626                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
8627
8628                 /* This VSI is connected to VEB so the switch_id
8629                  * should be set to zero by default.
8630                  */
8631                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8632                         ctxt.info.valid_sections |=
8633                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8634                         ctxt.info.switch_id =
8635                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8636                 }
8637
8638                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
8639                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
8640                 if (pf->vf[vsi->vf_id].spoofchk) {
8641                         ctxt.info.valid_sections |=
8642                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
8643                         ctxt.info.sec_flags |=
8644                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
8645                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
8646                 }
8647                 /* Setup the VSI tx/rx queue map for TC0 only for now */
8648                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8649                 break;
8650
8651 #ifdef I40E_FCOE
8652         case I40E_VSI_FCOE:
8653                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
8654                 if (ret) {
8655                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
8656                         return ret;
8657                 }
8658                 break;
8659
8660 #endif /* I40E_FCOE */
8661         default:
8662                 return -ENODEV;
8663         }
8664
8665         if (vsi->type != I40E_VSI_MAIN) {
8666                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
8667                 if (ret) {
8668                         dev_info(&vsi->back->pdev->dev,
8669                                  "add vsi failed, err %s aq_err %s\n",
8670                                  i40e_stat_str(&pf->hw, ret),
8671                                  i40e_aq_str(&pf->hw,
8672                                              pf->hw.aq.asq_last_status));
8673                         ret = -ENOENT;
8674                         goto err;
8675                 }
8676                 vsi->info = ctxt.info;
8677                 vsi->info.valid_sections = 0;
8678                 vsi->seid = ctxt.seid;
8679                 vsi->id = ctxt.vsi_number;
8680         }
8681
8682         /* If macvlan filters already exist, force them to get loaded */
8683         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
8684                 f->changed = true;
8685                 f_count++;
8686
8687                 if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
8688                         struct i40e_aqc_remove_macvlan_element_data element;
8689
8690                         memset(&element, 0, sizeof(element));
8691                         ether_addr_copy(element.mac_addr, f->macaddr);
8692                         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
8693                         ret = i40e_aq_remove_macvlan(hw, vsi->seid,
8694                                                      &element, 1, NULL);
8695                         if (ret) {
8696                                 /* some older FW has a different default */
8697                                 element.flags |=
8698                                                I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
8699                                 i40e_aq_remove_macvlan(hw, vsi->seid,
8700                                                        &element, 1, NULL);
8701                         }
8702
8703                         i40e_aq_mac_address_write(hw,
8704                                                   I40E_AQC_WRITE_TYPE_LAA_WOL,
8705                                                   f->macaddr, NULL);
8706                 }
8707         }
8708         if (f_count) {
8709                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
8710                 pf->flags |= I40E_FLAG_FILTER_SYNC;
8711         }
8712
8713         /* Update VSI BW information */
8714         ret = i40e_vsi_get_bw_info(vsi);
8715         if (ret) {
8716                 dev_info(&pf->pdev->dev,
8717                          "couldn't get vsi bw info, err %s aq_err %s\n",
8718                          i40e_stat_str(&pf->hw, ret),
8719                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
8720                 /* VSI is already added so not tearing that up */
8721                 ret = 0;
8722         }
8723
8724 err:
8725         return ret;
8726 }
8727
8728 /**
8729  * i40e_vsi_release - Delete a VSI and free its resources
8730  * @vsi: the VSI being removed
8731  *
8732  * Returns 0 on success or < 0 on error
8733  **/
8734 int i40e_vsi_release(struct i40e_vsi *vsi)
8735 {
8736         struct i40e_mac_filter *f, *ftmp;
8737         struct i40e_veb *veb = NULL;
8738         struct i40e_pf *pf;
8739         u16 uplink_seid;
8740         int i, n;
8741
8742         pf = vsi->back;
8743
8744         /* release of a VEB-owner or last VSI is not allowed */
8745         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
8746                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
8747                          vsi->seid, vsi->uplink_seid);
8748                 return -ENODEV;
8749         }
8750         if (vsi == pf->vsi[pf->lan_vsi] &&
8751             !test_bit(__I40E_DOWN, &pf->state)) {
8752                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
8753                 return -ENODEV;
8754         }
8755
8756         uplink_seid = vsi->uplink_seid;
8757         if (vsi->type != I40E_VSI_SRIOV) {
8758                 if (vsi->netdev_registered) {
8759                         vsi->netdev_registered = false;
8760                         if (vsi->netdev) {
8761                                 /* results in a call to i40e_close() */
8762                                 unregister_netdev(vsi->netdev);
8763                         }
8764                 } else {
8765                         i40e_vsi_close(vsi);
8766                 }
8767                 i40e_vsi_disable_irq(vsi);
8768         }
8769
8770         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
8771                 i40e_del_filter(vsi, f->macaddr, f->vlan,
8772                                 f->is_vf, f->is_netdev);
8773         i40e_sync_vsi_filters(vsi);
8774
8775         i40e_vsi_delete(vsi);
8776         i40e_vsi_free_q_vectors(vsi);
8777         if (vsi->netdev) {
8778                 free_netdev(vsi->netdev);
8779                 vsi->netdev = NULL;
8780         }
8781         i40e_vsi_clear_rings(vsi);
8782         i40e_vsi_clear(vsi);
8783
8784         /* If this was the last thing on the VEB, except for the
8785          * controlling VSI, remove the VEB, which puts the controlling
8786          * VSI onto the next level down in the switch.
8787          *
8788          * Well, okay, there's one more exception here: don't remove
8789          * the orphan VEBs yet.  We'll wait for an explicit remove request
8790          * from up the network stack.
8791          */
8792         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
8793                 if (pf->vsi[i] &&
8794                     pf->vsi[i]->uplink_seid == uplink_seid &&
8795                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
8796                         n++;      /* count the VSIs */
8797                 }
8798         }
8799         for (i = 0; i < I40E_MAX_VEB; i++) {
8800                 if (!pf->veb[i])
8801                         continue;
8802                 if (pf->veb[i]->uplink_seid == uplink_seid)
8803                         n++;     /* count the VEBs */
8804                 if (pf->veb[i]->seid == uplink_seid)
8805                         veb = pf->veb[i];
8806         }
8807         if (n == 0 && veb && veb->uplink_seid != 0)
8808                 i40e_veb_release(veb);
8809
8810         return 0;
8811 }
8812
8813 /**
8814  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
8815  * @vsi: ptr to the VSI
8816  *
8817  * This should only be called after i40e_vsi_mem_alloc() which allocates the
8818  * corresponding SW VSI structure and initializes num_queue_pairs for the
8819  * newly allocated VSI.
8820  *
8821  * Returns 0 on success or negative on failure
8822  **/
8823 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
8824 {
8825         int ret = -ENOENT;
8826         struct i40e_pf *pf = vsi->back;
8827
8828         if (vsi->q_vectors[0]) {
8829                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
8830                          vsi->seid);
8831                 return -EEXIST;
8832         }
8833
8834         if (vsi->base_vector) {
8835                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
8836                          vsi->seid, vsi->base_vector);
8837                 return -EEXIST;
8838         }
8839
8840         ret = i40e_vsi_alloc_q_vectors(vsi);
8841         if (ret) {
8842                 dev_info(&pf->pdev->dev,
8843                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
8844                          vsi->num_q_vectors, vsi->seid, ret);
8845                 vsi->num_q_vectors = 0;
8846                 goto vector_setup_out;
8847         }
8848
8849         /* In Legacy mode, we do not have to get any other vector since we
8850          * piggyback on the misc/ICR0 for queue interrupts.
8851         */
8852         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
8853                 return ret;
8854         if (vsi->num_q_vectors)
8855                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
8856                                                  vsi->num_q_vectors, vsi->idx);
8857         if (vsi->base_vector < 0) {
8858                 dev_info(&pf->pdev->dev,
8859                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
8860                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
8861                 i40e_vsi_free_q_vectors(vsi);
8862                 ret = -ENOENT;
8863                 goto vector_setup_out;
8864         }
8865
8866 vector_setup_out:
8867         return ret;
8868 }
8869
8870 /**
8871  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
8872  * @vsi: pointer to the vsi.
8873  *
8874  * This re-allocates a vsi's queue resources.
8875  *
8876  * Returns pointer to the successfully allocated and configured VSI sw struct
8877  * on success, otherwise returns NULL on failure.
8878  **/
8879 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
8880 {
8881         struct i40e_pf *pf = vsi->back;
8882         u8 enabled_tc;
8883         int ret;
8884
8885         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
8886         i40e_vsi_clear_rings(vsi);
8887
8888         i40e_vsi_free_arrays(vsi, false);
8889         i40e_set_num_rings_in_vsi(vsi);
8890         ret = i40e_vsi_alloc_arrays(vsi, false);
8891         if (ret)
8892                 goto err_vsi;
8893
8894         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
8895         if (ret < 0) {
8896                 dev_info(&pf->pdev->dev,
8897                          "failed to get tracking for %d queues for VSI %d err %d\n",
8898                          vsi->alloc_queue_pairs, vsi->seid, ret);
8899                 goto err_vsi;
8900         }
8901         vsi->base_queue = ret;
8902
8903         /* Update the FW view of the VSI. Force a reset of TC and queue
8904          * layout configurations.
8905          */
8906         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
8907         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
8908         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
8909         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
8910
8911         /* assign it some queues */
8912         ret = i40e_alloc_rings(vsi);
8913         if (ret)
8914                 goto err_rings;
8915
8916         /* map all of the rings to the q_vectors */
8917         i40e_vsi_map_rings_to_vectors(vsi);
8918         return vsi;
8919
8920 err_rings:
8921         i40e_vsi_free_q_vectors(vsi);
8922         if (vsi->netdev_registered) {
8923                 vsi->netdev_registered = false;
8924                 unregister_netdev(vsi->netdev);
8925                 free_netdev(vsi->netdev);
8926                 vsi->netdev = NULL;
8927         }
8928         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
8929 err_vsi:
8930         i40e_vsi_clear(vsi);
8931         return NULL;
8932 }
8933
8934 /**
8935  * i40e_vsi_setup - Set up a VSI by a given type
8936  * @pf: board private structure
8937  * @type: VSI type
8938  * @uplink_seid: the switch element to link to
8939  * @param1: usage depends upon VSI type. For VF types, indicates VF id
8940  *
8941  * This allocates the sw VSI structure and its queue resources, then add a VSI
8942  * to the identified VEB.
8943  *
8944  * Returns pointer to the successfully allocated and configure VSI sw struct on
8945  * success, otherwise returns NULL on failure.
8946  **/
8947 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
8948                                 u16 uplink_seid, u32 param1)
8949 {
8950         struct i40e_vsi *vsi = NULL;
8951         struct i40e_veb *veb = NULL;
8952         int ret, i;
8953         int v_idx;
8954
8955         /* The requested uplink_seid must be either
8956          *     - the PF's port seid
8957          *              no VEB is needed because this is the PF
8958          *              or this is a Flow Director special case VSI
8959          *     - seid of an existing VEB
8960          *     - seid of a VSI that owns an existing VEB
8961          *     - seid of a VSI that doesn't own a VEB
8962          *              a new VEB is created and the VSI becomes the owner
8963          *     - seid of the PF VSI, which is what creates the first VEB
8964          *              this is a special case of the previous
8965          *
8966          * Find which uplink_seid we were given and create a new VEB if needed
8967          */
8968         for (i = 0; i < I40E_MAX_VEB; i++) {
8969                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
8970                         veb = pf->veb[i];
8971                         break;
8972                 }
8973         }
8974
8975         if (!veb && uplink_seid != pf->mac_seid) {
8976
8977                 for (i = 0; i < pf->num_alloc_vsi; i++) {
8978                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
8979                                 vsi = pf->vsi[i];
8980                                 break;
8981                         }
8982                 }
8983                 if (!vsi) {
8984                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
8985                                  uplink_seid);
8986                         return NULL;
8987                 }
8988
8989                 if (vsi->uplink_seid == pf->mac_seid)
8990                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
8991                                              vsi->tc_config.enabled_tc);
8992                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
8993                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8994                                              vsi->tc_config.enabled_tc);
8995                 if (veb) {
8996                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
8997                                 dev_info(&vsi->back->pdev->dev,
8998                                          "%s: New VSI creation error, uplink seid of LAN VSI expected.\n",
8999                                          __func__);
9000                                 return NULL;
9001                         }
9002                         /* We come up by default in VEPA mode if SRIOV is not
9003                          * already enabled, in which case we can't force VEPA
9004                          * mode.
9005                          */
9006                         if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
9007                                 veb->bridge_mode = BRIDGE_MODE_VEPA;
9008                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
9009                         }
9010                         i40e_config_bridge_mode(veb);
9011                 }
9012                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9013                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9014                                 veb = pf->veb[i];
9015                 }
9016                 if (!veb) {
9017                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
9018                         return NULL;
9019                 }
9020
9021                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9022                 uplink_seid = veb->seid;
9023         }
9024
9025         /* get vsi sw struct */
9026         v_idx = i40e_vsi_mem_alloc(pf, type);
9027         if (v_idx < 0)
9028                 goto err_alloc;
9029         vsi = pf->vsi[v_idx];
9030         if (!vsi)
9031                 goto err_alloc;
9032         vsi->type = type;
9033         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
9034
9035         if (type == I40E_VSI_MAIN)
9036                 pf->lan_vsi = v_idx;
9037         else if (type == I40E_VSI_SRIOV)
9038                 vsi->vf_id = param1;
9039         /* assign it some queues */
9040         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
9041                                 vsi->idx);
9042         if (ret < 0) {
9043                 dev_info(&pf->pdev->dev,
9044                          "failed to get tracking for %d queues for VSI %d err=%d\n",
9045                          vsi->alloc_queue_pairs, vsi->seid, ret);
9046                 goto err_vsi;
9047         }
9048         vsi->base_queue = ret;
9049
9050         /* get a VSI from the hardware */
9051         vsi->uplink_seid = uplink_seid;
9052         ret = i40e_add_vsi(vsi);
9053         if (ret)
9054                 goto err_vsi;
9055
9056         switch (vsi->type) {
9057         /* setup the netdev if needed */
9058         case I40E_VSI_MAIN:
9059         case I40E_VSI_VMDQ2:
9060         case I40E_VSI_FCOE:
9061                 ret = i40e_config_netdev(vsi);
9062                 if (ret)
9063                         goto err_netdev;
9064                 ret = register_netdev(vsi->netdev);
9065                 if (ret)
9066                         goto err_netdev;
9067                 vsi->netdev_registered = true;
9068                 netif_carrier_off(vsi->netdev);
9069 #ifdef CONFIG_I40E_DCB
9070                 /* Setup DCB netlink interface */
9071                 i40e_dcbnl_setup(vsi);
9072 #endif /* CONFIG_I40E_DCB */
9073                 /* fall through */
9074
9075         case I40E_VSI_FDIR:
9076                 /* set up vectors and rings if needed */
9077                 ret = i40e_vsi_setup_vectors(vsi);
9078                 if (ret)
9079                         goto err_msix;
9080
9081                 ret = i40e_alloc_rings(vsi);
9082                 if (ret)
9083                         goto err_rings;
9084
9085                 /* map all of the rings to the q_vectors */
9086                 i40e_vsi_map_rings_to_vectors(vsi);
9087
9088                 i40e_vsi_reset_stats(vsi);
9089                 break;
9090
9091         default:
9092                 /* no netdev or rings for the other VSI types */
9093                 break;
9094         }
9095
9096         if ((pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) &&
9097             (vsi->type == I40E_VSI_VMDQ2)) {
9098                 ret = i40e_vsi_config_rss(vsi);
9099         }
9100         return vsi;
9101
9102 err_rings:
9103         i40e_vsi_free_q_vectors(vsi);
9104 err_msix:
9105         if (vsi->netdev_registered) {
9106                 vsi->netdev_registered = false;
9107                 unregister_netdev(vsi->netdev);
9108                 free_netdev(vsi->netdev);
9109                 vsi->netdev = NULL;
9110         }
9111 err_netdev:
9112         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9113 err_vsi:
9114         i40e_vsi_clear(vsi);
9115 err_alloc:
9116         return NULL;
9117 }
9118
9119 /**
9120  * i40e_veb_get_bw_info - Query VEB BW information
9121  * @veb: the veb to query
9122  *
9123  * Query the Tx scheduler BW configuration data for given VEB
9124  **/
9125 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
9126 {
9127         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
9128         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
9129         struct i40e_pf *pf = veb->pf;
9130         struct i40e_hw *hw = &pf->hw;
9131         u32 tc_bw_max;
9132         int ret = 0;
9133         int i;
9134
9135         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
9136                                                   &bw_data, NULL);
9137         if (ret) {
9138                 dev_info(&pf->pdev->dev,
9139                          "query veb bw config failed, err %s aq_err %s\n",
9140                          i40e_stat_str(&pf->hw, ret),
9141                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9142                 goto out;
9143         }
9144
9145         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
9146                                                    &ets_data, NULL);
9147         if (ret) {
9148                 dev_info(&pf->pdev->dev,
9149                          "query veb bw ets config failed, err %s aq_err %s\n",
9150                          i40e_stat_str(&pf->hw, ret),
9151                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9152                 goto out;
9153         }
9154
9155         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
9156         veb->bw_max_quanta = ets_data.tc_bw_max;
9157         veb->is_abs_credits = bw_data.absolute_credits_enable;
9158         veb->enabled_tc = ets_data.tc_valid_bits;
9159         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
9160                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
9161         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
9162                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
9163                 veb->bw_tc_limit_credits[i] =
9164                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
9165                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
9166         }
9167
9168 out:
9169         return ret;
9170 }
9171
9172 /**
9173  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
9174  * @pf: board private structure
9175  *
9176  * On error: returns error code (negative)
9177  * On success: returns vsi index in PF (positive)
9178  **/
9179 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
9180 {
9181         int ret = -ENOENT;
9182         struct i40e_veb *veb;
9183         int i;
9184
9185         /* Need to protect the allocation of switch elements at the PF level */
9186         mutex_lock(&pf->switch_mutex);
9187
9188         /* VEB list may be fragmented if VEB creation/destruction has
9189          * been happening.  We can afford to do a quick scan to look
9190          * for any free slots in the list.
9191          *
9192          * find next empty veb slot, looping back around if necessary
9193          */
9194         i = 0;
9195         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
9196                 i++;
9197         if (i >= I40E_MAX_VEB) {
9198                 ret = -ENOMEM;
9199                 goto err_alloc_veb;  /* out of VEB slots! */
9200         }
9201
9202         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
9203         if (!veb) {
9204                 ret = -ENOMEM;
9205                 goto err_alloc_veb;
9206         }
9207         veb->pf = pf;
9208         veb->idx = i;
9209         veb->enabled_tc = 1;
9210
9211         pf->veb[i] = veb;
9212         ret = i;
9213 err_alloc_veb:
9214         mutex_unlock(&pf->switch_mutex);
9215         return ret;
9216 }
9217
9218 /**
9219  * i40e_switch_branch_release - Delete a branch of the switch tree
9220  * @branch: where to start deleting
9221  *
9222  * This uses recursion to find the tips of the branch to be
9223  * removed, deleting until we get back to and can delete this VEB.
9224  **/
9225 static void i40e_switch_branch_release(struct i40e_veb *branch)
9226 {
9227         struct i40e_pf *pf = branch->pf;
9228         u16 branch_seid = branch->seid;
9229         u16 veb_idx = branch->idx;
9230         int i;
9231
9232         /* release any VEBs on this VEB - RECURSION */
9233         for (i = 0; i < I40E_MAX_VEB; i++) {
9234                 if (!pf->veb[i])
9235                         continue;
9236                 if (pf->veb[i]->uplink_seid == branch->seid)
9237                         i40e_switch_branch_release(pf->veb[i]);
9238         }
9239
9240         /* Release the VSIs on this VEB, but not the owner VSI.
9241          *
9242          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
9243          *       the VEB itself, so don't use (*branch) after this loop.
9244          */
9245         for (i = 0; i < pf->num_alloc_vsi; i++) {
9246                 if (!pf->vsi[i])
9247                         continue;
9248                 if (pf->vsi[i]->uplink_seid == branch_seid &&
9249                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9250                         i40e_vsi_release(pf->vsi[i]);
9251                 }
9252         }
9253
9254         /* There's one corner case where the VEB might not have been
9255          * removed, so double check it here and remove it if needed.
9256          * This case happens if the veb was created from the debugfs
9257          * commands and no VSIs were added to it.
9258          */
9259         if (pf->veb[veb_idx])
9260                 i40e_veb_release(pf->veb[veb_idx]);
9261 }
9262
9263 /**
9264  * i40e_veb_clear - remove veb struct
9265  * @veb: the veb to remove
9266  **/
9267 static void i40e_veb_clear(struct i40e_veb *veb)
9268 {
9269         if (!veb)
9270                 return;
9271
9272         if (veb->pf) {
9273                 struct i40e_pf *pf = veb->pf;
9274
9275                 mutex_lock(&pf->switch_mutex);
9276                 if (pf->veb[veb->idx] == veb)
9277                         pf->veb[veb->idx] = NULL;
9278                 mutex_unlock(&pf->switch_mutex);
9279         }
9280
9281         kfree(veb);
9282 }
9283
9284 /**
9285  * i40e_veb_release - Delete a VEB and free its resources
9286  * @veb: the VEB being removed
9287  **/
9288 void i40e_veb_release(struct i40e_veb *veb)
9289 {
9290         struct i40e_vsi *vsi = NULL;
9291         struct i40e_pf *pf;
9292         int i, n = 0;
9293
9294         pf = veb->pf;
9295
9296         /* find the remaining VSI and check for extras */
9297         for (i = 0; i < pf->num_alloc_vsi; i++) {
9298                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
9299                         n++;
9300                         vsi = pf->vsi[i];
9301                 }
9302         }
9303         if (n != 1) {
9304                 dev_info(&pf->pdev->dev,
9305                          "can't remove VEB %d with %d VSIs left\n",
9306                          veb->seid, n);
9307                 return;
9308         }
9309
9310         /* move the remaining VSI to uplink veb */
9311         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
9312         if (veb->uplink_seid) {
9313                 vsi->uplink_seid = veb->uplink_seid;
9314                 if (veb->uplink_seid == pf->mac_seid)
9315                         vsi->veb_idx = I40E_NO_VEB;
9316                 else
9317                         vsi->veb_idx = veb->veb_idx;
9318         } else {
9319                 /* floating VEB */
9320                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
9321                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
9322         }
9323
9324         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
9325         i40e_veb_clear(veb);
9326 }
9327
9328 /**
9329  * i40e_add_veb - create the VEB in the switch
9330  * @veb: the VEB to be instantiated
9331  * @vsi: the controlling VSI
9332  **/
9333 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
9334 {
9335         struct i40e_pf *pf = veb->pf;
9336         bool is_default = veb->pf->cur_promisc;
9337         bool is_cloud = false;
9338         int ret;
9339
9340         /* get a VEB from the hardware */
9341         ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid,
9342                               veb->enabled_tc, is_default,
9343                               is_cloud, &veb->seid, NULL);
9344         if (ret) {
9345                 dev_info(&pf->pdev->dev,
9346                          "couldn't add VEB, err %s aq_err %s\n",
9347                          i40e_stat_str(&pf->hw, ret),
9348                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9349                 return -EPERM;
9350         }
9351
9352         /* get statistics counter */
9353         ret = i40e_aq_get_veb_parameters(&pf->hw, veb->seid, NULL, NULL,
9354                                          &veb->stats_idx, NULL, NULL, NULL);
9355         if (ret) {
9356                 dev_info(&pf->pdev->dev,
9357                          "couldn't get VEB statistics idx, err %s aq_err %s\n",
9358                          i40e_stat_str(&pf->hw, ret),
9359                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9360                 return -EPERM;
9361         }
9362         ret = i40e_veb_get_bw_info(veb);
9363         if (ret) {
9364                 dev_info(&pf->pdev->dev,
9365                          "couldn't get VEB bw info, err %s aq_err %s\n",
9366                          i40e_stat_str(&pf->hw, ret),
9367                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9368                 i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
9369                 return -ENOENT;
9370         }
9371
9372         vsi->uplink_seid = veb->seid;
9373         vsi->veb_idx = veb->idx;
9374         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9375
9376         return 0;
9377 }
9378
9379 /**
9380  * i40e_veb_setup - Set up a VEB
9381  * @pf: board private structure
9382  * @flags: VEB setup flags
9383  * @uplink_seid: the switch element to link to
9384  * @vsi_seid: the initial VSI seid
9385  * @enabled_tc: Enabled TC bit-map
9386  *
9387  * This allocates the sw VEB structure and links it into the switch
9388  * It is possible and legal for this to be a duplicate of an already
9389  * existing VEB.  It is also possible for both uplink and vsi seids
9390  * to be zero, in order to create a floating VEB.
9391  *
9392  * Returns pointer to the successfully allocated VEB sw struct on
9393  * success, otherwise returns NULL on failure.
9394  **/
9395 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
9396                                 u16 uplink_seid, u16 vsi_seid,
9397                                 u8 enabled_tc)
9398 {
9399         struct i40e_veb *veb, *uplink_veb = NULL;
9400         int vsi_idx, veb_idx;
9401         int ret;
9402
9403         /* if one seid is 0, the other must be 0 to create a floating relay */
9404         if ((uplink_seid == 0 || vsi_seid == 0) &&
9405             (uplink_seid + vsi_seid != 0)) {
9406                 dev_info(&pf->pdev->dev,
9407                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
9408                          uplink_seid, vsi_seid);
9409                 return NULL;
9410         }
9411
9412         /* make sure there is such a vsi and uplink */
9413         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
9414                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
9415                         break;
9416         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
9417                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
9418                          vsi_seid);
9419                 return NULL;
9420         }
9421
9422         if (uplink_seid && uplink_seid != pf->mac_seid) {
9423                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
9424                         if (pf->veb[veb_idx] &&
9425                             pf->veb[veb_idx]->seid == uplink_seid) {
9426                                 uplink_veb = pf->veb[veb_idx];
9427                                 break;
9428                         }
9429                 }
9430                 if (!uplink_veb) {
9431                         dev_info(&pf->pdev->dev,
9432                                  "uplink seid %d not found\n", uplink_seid);
9433                         return NULL;
9434                 }
9435         }
9436
9437         /* get veb sw struct */
9438         veb_idx = i40e_veb_mem_alloc(pf);
9439         if (veb_idx < 0)
9440                 goto err_alloc;
9441         veb = pf->veb[veb_idx];
9442         veb->flags = flags;
9443         veb->uplink_seid = uplink_seid;
9444         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
9445         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
9446
9447         /* create the VEB in the switch */
9448         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
9449         if (ret)
9450                 goto err_veb;
9451         if (vsi_idx == pf->lan_vsi)
9452                 pf->lan_veb = veb->idx;
9453
9454         return veb;
9455
9456 err_veb:
9457         i40e_veb_clear(veb);
9458 err_alloc:
9459         return NULL;
9460 }
9461
9462 /**
9463  * i40e_setup_pf_switch_element - set PF vars based on switch type
9464  * @pf: board private structure
9465  * @ele: element we are building info from
9466  * @num_reported: total number of elements
9467  * @printconfig: should we print the contents
9468  *
9469  * helper function to assist in extracting a few useful SEID values.
9470  **/
9471 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
9472                                 struct i40e_aqc_switch_config_element_resp *ele,
9473                                 u16 num_reported, bool printconfig)
9474 {
9475         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
9476         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
9477         u8 element_type = ele->element_type;
9478         u16 seid = le16_to_cpu(ele->seid);
9479
9480         if (printconfig)
9481                 dev_info(&pf->pdev->dev,
9482                          "type=%d seid=%d uplink=%d downlink=%d\n",
9483                          element_type, seid, uplink_seid, downlink_seid);
9484
9485         switch (element_type) {
9486         case I40E_SWITCH_ELEMENT_TYPE_MAC:
9487                 pf->mac_seid = seid;
9488                 break;
9489         case I40E_SWITCH_ELEMENT_TYPE_VEB:
9490                 /* Main VEB? */
9491                 if (uplink_seid != pf->mac_seid)
9492                         break;
9493                 if (pf->lan_veb == I40E_NO_VEB) {
9494                         int v;
9495
9496                         /* find existing or else empty VEB */
9497                         for (v = 0; v < I40E_MAX_VEB; v++) {
9498                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
9499                                         pf->lan_veb = v;
9500                                         break;
9501                                 }
9502                         }
9503                         if (pf->lan_veb == I40E_NO_VEB) {
9504                                 v = i40e_veb_mem_alloc(pf);
9505                                 if (v < 0)
9506                                         break;
9507                                 pf->lan_veb = v;
9508                         }
9509                 }
9510
9511                 pf->veb[pf->lan_veb]->seid = seid;
9512                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
9513                 pf->veb[pf->lan_veb]->pf = pf;
9514                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
9515                 break;
9516         case I40E_SWITCH_ELEMENT_TYPE_VSI:
9517                 if (num_reported != 1)
9518                         break;
9519                 /* This is immediately after a reset so we can assume this is
9520                  * the PF's VSI
9521                  */
9522                 pf->mac_seid = uplink_seid;
9523                 pf->pf_seid = downlink_seid;
9524                 pf->main_vsi_seid = seid;
9525                 if (printconfig)
9526                         dev_info(&pf->pdev->dev,
9527                                  "pf_seid=%d main_vsi_seid=%d\n",
9528                                  pf->pf_seid, pf->main_vsi_seid);
9529                 break;
9530         case I40E_SWITCH_ELEMENT_TYPE_PF:
9531         case I40E_SWITCH_ELEMENT_TYPE_VF:
9532         case I40E_SWITCH_ELEMENT_TYPE_EMP:
9533         case I40E_SWITCH_ELEMENT_TYPE_BMC:
9534         case I40E_SWITCH_ELEMENT_TYPE_PE:
9535         case I40E_SWITCH_ELEMENT_TYPE_PA:
9536                 /* ignore these for now */
9537                 break;
9538         default:
9539                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
9540                          element_type, seid);
9541                 break;
9542         }
9543 }
9544
9545 /**
9546  * i40e_fetch_switch_configuration - Get switch config from firmware
9547  * @pf: board private structure
9548  * @printconfig: should we print the contents
9549  *
9550  * Get the current switch configuration from the device and
9551  * extract a few useful SEID values.
9552  **/
9553 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
9554 {
9555         struct i40e_aqc_get_switch_config_resp *sw_config;
9556         u16 next_seid = 0;
9557         int ret = 0;
9558         u8 *aq_buf;
9559         int i;
9560
9561         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
9562         if (!aq_buf)
9563                 return -ENOMEM;
9564
9565         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
9566         do {
9567                 u16 num_reported, num_total;
9568
9569                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
9570                                                 I40E_AQ_LARGE_BUF,
9571                                                 &next_seid, NULL);
9572                 if (ret) {
9573                         dev_info(&pf->pdev->dev,
9574                                  "get switch config failed err %s aq_err %s\n",
9575                                  i40e_stat_str(&pf->hw, ret),
9576                                  i40e_aq_str(&pf->hw,
9577                                              pf->hw.aq.asq_last_status));
9578                         kfree(aq_buf);
9579                         return -ENOENT;
9580                 }
9581
9582                 num_reported = le16_to_cpu(sw_config->header.num_reported);
9583                 num_total = le16_to_cpu(sw_config->header.num_total);
9584
9585                 if (printconfig)
9586                         dev_info(&pf->pdev->dev,
9587                                  "header: %d reported %d total\n",
9588                                  num_reported, num_total);
9589
9590                 for (i = 0; i < num_reported; i++) {
9591                         struct i40e_aqc_switch_config_element_resp *ele =
9592                                 &sw_config->element[i];
9593
9594                         i40e_setup_pf_switch_element(pf, ele, num_reported,
9595                                                      printconfig);
9596                 }
9597         } while (next_seid != 0);
9598
9599         kfree(aq_buf);
9600         return ret;
9601 }
9602
9603 /**
9604  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
9605  * @pf: board private structure
9606  * @reinit: if the Main VSI needs to re-initialized.
9607  *
9608  * Returns 0 on success, negative value on failure
9609  **/
9610 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
9611 {
9612         int ret;
9613
9614         /* find out what's out there already */
9615         ret = i40e_fetch_switch_configuration(pf, false);
9616         if (ret) {
9617                 dev_info(&pf->pdev->dev,
9618                          "couldn't fetch switch config, err %s aq_err %s\n",
9619                          i40e_stat_str(&pf->hw, ret),
9620                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9621                 return ret;
9622         }
9623         i40e_pf_reset_stats(pf);
9624
9625         /* first time setup */
9626         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
9627                 struct i40e_vsi *vsi = NULL;
9628                 u16 uplink_seid;
9629
9630                 /* Set up the PF VSI associated with the PF's main VSI
9631                  * that is already in the HW switch
9632                  */
9633                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
9634                         uplink_seid = pf->veb[pf->lan_veb]->seid;
9635                 else
9636                         uplink_seid = pf->mac_seid;
9637                 if (pf->lan_vsi == I40E_NO_VSI)
9638                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
9639                 else if (reinit)
9640                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
9641                 if (!vsi) {
9642                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
9643                         i40e_fdir_teardown(pf);
9644                         return -EAGAIN;
9645                 }
9646         } else {
9647                 /* force a reset of TC and queue layout configurations */
9648                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
9649                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
9650                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
9651                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
9652         }
9653         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
9654
9655         i40e_fdir_sb_setup(pf);
9656
9657         /* Setup static PF queue filter control settings */
9658         ret = i40e_setup_pf_filter_control(pf);
9659         if (ret) {
9660                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
9661                          ret);
9662                 /* Failure here should not stop continuing other steps */
9663         }
9664
9665         /* enable RSS in the HW, even for only one queue, as the stack can use
9666          * the hash
9667          */
9668         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
9669                 i40e_config_rss(pf);
9670
9671         /* fill in link information and enable LSE reporting */
9672         i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
9673         i40e_link_event(pf);
9674
9675         /* Initialize user-specific link properties */
9676         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
9677                                   I40E_AQ_AN_COMPLETED) ? true : false);
9678
9679         i40e_ptp_init(pf);
9680
9681         return ret;
9682 }
9683
9684 /**
9685  * i40e_determine_queue_usage - Work out queue distribution
9686  * @pf: board private structure
9687  **/
9688 static void i40e_determine_queue_usage(struct i40e_pf *pf)
9689 {
9690         int queues_left;
9691
9692         pf->num_lan_qps = 0;
9693 #ifdef I40E_FCOE
9694         pf->num_fcoe_qps = 0;
9695 #endif
9696
9697         /* Find the max queues to be put into basic use.  We'll always be
9698          * using TC0, whether or not DCB is running, and TC0 will get the
9699          * big RSS set.
9700          */
9701         queues_left = pf->hw.func_caps.num_tx_qp;
9702
9703         if ((queues_left == 1) ||
9704             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
9705                 /* one qp for PF, no queues for anything else */
9706                 queues_left = 0;
9707                 pf->rss_size = pf->num_lan_qps = 1;
9708
9709                 /* make sure all the fancies are disabled */
9710                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
9711 #ifdef I40E_FCOE
9712                                I40E_FLAG_FCOE_ENABLED   |
9713 #endif
9714                                I40E_FLAG_FD_SB_ENABLED  |
9715                                I40E_FLAG_FD_ATR_ENABLED |
9716                                I40E_FLAG_DCB_CAPABLE    |
9717                                I40E_FLAG_SRIOV_ENABLED  |
9718                                I40E_FLAG_VMDQ_ENABLED);
9719         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
9720                                   I40E_FLAG_FD_SB_ENABLED |
9721                                   I40E_FLAG_FD_ATR_ENABLED |
9722                                   I40E_FLAG_DCB_CAPABLE))) {
9723                 /* one qp for PF */
9724                 pf->rss_size = pf->num_lan_qps = 1;
9725                 queues_left -= pf->num_lan_qps;
9726
9727                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
9728 #ifdef I40E_FCOE
9729                                I40E_FLAG_FCOE_ENABLED   |
9730 #endif
9731                                I40E_FLAG_FD_SB_ENABLED  |
9732                                I40E_FLAG_FD_ATR_ENABLED |
9733                                I40E_FLAG_DCB_ENABLED    |
9734                                I40E_FLAG_VMDQ_ENABLED);
9735         } else {
9736                 /* Not enough queues for all TCs */
9737                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
9738                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
9739                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
9740                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
9741                 }
9742                 pf->num_lan_qps = max_t(int, pf->rss_size_max,
9743                                         num_online_cpus());
9744                 pf->num_lan_qps = min_t(int, pf->num_lan_qps,
9745                                         pf->hw.func_caps.num_tx_qp);
9746
9747                 queues_left -= pf->num_lan_qps;
9748         }
9749
9750 #ifdef I40E_FCOE
9751         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
9752                 if (I40E_DEFAULT_FCOE <= queues_left) {
9753                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
9754                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
9755                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
9756                 } else {
9757                         pf->num_fcoe_qps = 0;
9758                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
9759                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
9760                 }
9761
9762                 queues_left -= pf->num_fcoe_qps;
9763         }
9764
9765 #endif
9766         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
9767                 if (queues_left > 1) {
9768                         queues_left -= 1; /* save 1 queue for FD */
9769                 } else {
9770                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
9771                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
9772                 }
9773         }
9774
9775         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
9776             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
9777                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
9778                                         (queues_left / pf->num_vf_qps));
9779                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
9780         }
9781
9782         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
9783             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
9784                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
9785                                           (queues_left / pf->num_vmdq_qps));
9786                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
9787         }
9788
9789         pf->queues_left = queues_left;
9790 #ifdef I40E_FCOE
9791         dev_info(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
9792 #endif
9793 }
9794
9795 /**
9796  * i40e_setup_pf_filter_control - Setup PF static filter control
9797  * @pf: PF to be setup
9798  *
9799  * i40e_setup_pf_filter_control sets up a PF's initial filter control
9800  * settings. If PE/FCoE are enabled then it will also set the per PF
9801  * based filter sizes required for them. It also enables Flow director,
9802  * ethertype and macvlan type filter settings for the pf.
9803  *
9804  * Returns 0 on success, negative on failure
9805  **/
9806 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
9807 {
9808         struct i40e_filter_control_settings *settings = &pf->filter_settings;
9809
9810         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
9811
9812         /* Flow Director is enabled */
9813         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
9814                 settings->enable_fdir = true;
9815
9816         /* Ethtype and MACVLAN filters enabled for PF */
9817         settings->enable_ethtype = true;
9818         settings->enable_macvlan = true;
9819
9820         if (i40e_set_filter_control(&pf->hw, settings))
9821                 return -ENOENT;
9822
9823         return 0;
9824 }
9825
9826 #define INFO_STRING_LEN 255
9827 static void i40e_print_features(struct i40e_pf *pf)
9828 {
9829         struct i40e_hw *hw = &pf->hw;
9830         char *buf, *string;
9831
9832         string = kzalloc(INFO_STRING_LEN, GFP_KERNEL);
9833         if (!string) {
9834                 dev_err(&pf->pdev->dev, "Features string allocation failed\n");
9835                 return;
9836         }
9837
9838         buf = string;
9839
9840         buf += sprintf(string, "Features: PF-id[%d] ", hw->pf_id);
9841 #ifdef CONFIG_PCI_IOV
9842         buf += sprintf(buf, "VFs: %d ", pf->num_req_vfs);
9843 #endif
9844         buf += sprintf(buf, "VSIs: %d QP: %d RX: %s ",
9845                        pf->hw.func_caps.num_vsis,
9846                        pf->vsi[pf->lan_vsi]->num_queue_pairs,
9847                        pf->flags & I40E_FLAG_RX_PS_ENABLED ? "PS" : "1BUF");
9848
9849         if (pf->flags & I40E_FLAG_RSS_ENABLED)
9850                 buf += sprintf(buf, "RSS ");
9851         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
9852                 buf += sprintf(buf, "FD_ATR ");
9853         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
9854                 buf += sprintf(buf, "FD_SB ");
9855                 buf += sprintf(buf, "NTUPLE ");
9856         }
9857         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
9858                 buf += sprintf(buf, "DCB ");
9859         if (pf->flags & I40E_FLAG_PTP)
9860                 buf += sprintf(buf, "PTP ");
9861 #ifdef I40E_FCOE
9862         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
9863                 buf += sprintf(buf, "FCOE ");
9864 #endif
9865
9866         BUG_ON(buf > (string + INFO_STRING_LEN));
9867         dev_info(&pf->pdev->dev, "%s\n", string);
9868         kfree(string);
9869 }
9870
9871 /**
9872  * i40e_probe - Device initialization routine
9873  * @pdev: PCI device information struct
9874  * @ent: entry in i40e_pci_tbl
9875  *
9876  * i40e_probe initializes a PF identified by a pci_dev structure.
9877  * The OS initialization, configuring of the PF private structure,
9878  * and a hardware reset occur.
9879  *
9880  * Returns 0 on success, negative on failure
9881  **/
9882 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
9883 {
9884         struct i40e_aq_get_phy_abilities_resp abilities;
9885         unsigned long ioremap_len;
9886         struct i40e_pf *pf;
9887         struct i40e_hw *hw;
9888         static u16 pfs_found;
9889         u16 link_status;
9890         int err = 0;
9891         u32 len;
9892         u32 i;
9893
9894         err = pci_enable_device_mem(pdev);
9895         if (err)
9896                 return err;
9897
9898         /* set up for high or low dma */
9899         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
9900         if (err) {
9901                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
9902                 if (err) {
9903                         dev_err(&pdev->dev,
9904                                 "DMA configuration failed: 0x%x\n", err);
9905                         goto err_dma;
9906                 }
9907         }
9908
9909         /* set up pci connections */
9910         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
9911                                            IORESOURCE_MEM), i40e_driver_name);
9912         if (err) {
9913                 dev_info(&pdev->dev,
9914                          "pci_request_selected_regions failed %d\n", err);
9915                 goto err_pci_reg;
9916         }
9917
9918         pci_enable_pcie_error_reporting(pdev);
9919         pci_set_master(pdev);
9920
9921         /* Now that we have a PCI connection, we need to do the
9922          * low level device setup.  This is primarily setting up
9923          * the Admin Queue structures and then querying for the
9924          * device's current profile information.
9925          */
9926         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
9927         if (!pf) {
9928                 err = -ENOMEM;
9929                 goto err_pf_alloc;
9930         }
9931         pf->next_vsi = 0;
9932         pf->pdev = pdev;
9933         set_bit(__I40E_DOWN, &pf->state);
9934
9935         hw = &pf->hw;
9936         hw->back = pf;
9937
9938         ioremap_len = min_t(unsigned long, pci_resource_len(pdev, 0),
9939                             I40E_MAX_CSR_SPACE);
9940
9941         hw->hw_addr = ioremap(pci_resource_start(pdev, 0), ioremap_len);
9942         if (!hw->hw_addr) {
9943                 err = -EIO;
9944                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
9945                          (unsigned int)pci_resource_start(pdev, 0),
9946                          (unsigned int)pci_resource_len(pdev, 0), err);
9947                 goto err_ioremap;
9948         }
9949         hw->vendor_id = pdev->vendor;
9950         hw->device_id = pdev->device;
9951         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
9952         hw->subsystem_vendor_id = pdev->subsystem_vendor;
9953         hw->subsystem_device_id = pdev->subsystem_device;
9954         hw->bus.device = PCI_SLOT(pdev->devfn);
9955         hw->bus.func = PCI_FUNC(pdev->devfn);
9956         pf->instance = pfs_found;
9957
9958         if (debug != -1) {
9959                 pf->msg_enable = pf->hw.debug_mask;
9960                 pf->msg_enable = debug;
9961         }
9962
9963         /* do a special CORER for clearing PXE mode once at init */
9964         if (hw->revision_id == 0 &&
9965             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
9966                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
9967                 i40e_flush(hw);
9968                 msleep(200);
9969                 pf->corer_count++;
9970
9971                 i40e_clear_pxe_mode(hw);
9972         }
9973
9974         /* Reset here to make sure all is clean and to define PF 'n' */
9975         i40e_clear_hw(hw);
9976         err = i40e_pf_reset(hw);
9977         if (err) {
9978                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
9979                 goto err_pf_reset;
9980         }
9981         pf->pfr_count++;
9982
9983         hw->aq.num_arq_entries = I40E_AQ_LEN;
9984         hw->aq.num_asq_entries = I40E_AQ_LEN;
9985         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
9986         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
9987         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
9988
9989         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
9990                  "%s-%s:misc",
9991                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
9992
9993         err = i40e_init_shared_code(hw);
9994         if (err) {
9995                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
9996                          err);
9997                 goto err_pf_reset;
9998         }
9999
10000         /* set up a default setting for link flow control */
10001         pf->hw.fc.requested_mode = I40E_FC_NONE;
10002
10003         err = i40e_init_adminq(hw);
10004         dev_info(&pdev->dev, "%s\n", i40e_fw_version_str(hw));
10005         if (err) {
10006                 dev_info(&pdev->dev,
10007                          "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");
10008                 goto err_pf_reset;
10009         }
10010
10011         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
10012             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
10013                 dev_info(&pdev->dev,
10014                          "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");
10015         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
10016                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
10017                 dev_info(&pdev->dev,
10018                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
10019
10020         i40e_verify_eeprom(pf);
10021
10022         /* Rev 0 hardware was never productized */
10023         if (hw->revision_id < 1)
10024                 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");
10025
10026         i40e_clear_pxe_mode(hw);
10027         err = i40e_get_capabilities(pf);
10028         if (err)
10029                 goto err_adminq_setup;
10030
10031         err = i40e_sw_init(pf);
10032         if (err) {
10033                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
10034                 goto err_sw_init;
10035         }
10036
10037         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
10038                                 hw->func_caps.num_rx_qp,
10039                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
10040         if (err) {
10041                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
10042                 goto err_init_lan_hmc;
10043         }
10044
10045         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
10046         if (err) {
10047                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
10048                 err = -ENOENT;
10049                 goto err_configure_lan_hmc;
10050         }
10051
10052         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
10053          * Ignore error return codes because if it was already disabled via
10054          * hardware settings this will fail
10055          */
10056         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
10057             (pf->hw.aq.fw_maj_ver < 4)) {
10058                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
10059                 i40e_aq_stop_lldp(hw, true, NULL);
10060         }
10061
10062         i40e_get_mac_addr(hw, hw->mac.addr);
10063         if (!is_valid_ether_addr(hw->mac.addr)) {
10064                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
10065                 err = -EIO;
10066                 goto err_mac_addr;
10067         }
10068         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
10069         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
10070         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
10071         if (is_valid_ether_addr(hw->mac.port_addr))
10072                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
10073 #ifdef I40E_FCOE
10074         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
10075         if (err)
10076                 dev_info(&pdev->dev,
10077                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
10078         if (!is_valid_ether_addr(hw->mac.san_addr)) {
10079                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
10080                          hw->mac.san_addr);
10081                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
10082         }
10083         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
10084 #endif /* I40E_FCOE */
10085
10086         pci_set_drvdata(pdev, pf);
10087         pci_save_state(pdev);
10088 #ifdef CONFIG_I40E_DCB
10089         err = i40e_init_pf_dcb(pf);
10090         if (err) {
10091                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
10092                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10093                 /* Continue without DCB enabled */
10094         }
10095 #endif /* CONFIG_I40E_DCB */
10096
10097         /* set up periodic task facility */
10098         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
10099         pf->service_timer_period = HZ;
10100
10101         INIT_WORK(&pf->service_task, i40e_service_task);
10102         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
10103         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
10104         pf->link_check_timeout = jiffies;
10105
10106         /* WoL defaults to disabled */
10107         pf->wol_en = false;
10108         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
10109
10110         /* set up the main switch operations */
10111         i40e_determine_queue_usage(pf);
10112         err = i40e_init_interrupt_scheme(pf);
10113         if (err)
10114                 goto err_switch_setup;
10115
10116         /* The number of VSIs reported by the FW is the minimum guaranteed
10117          * to us; HW supports far more and we share the remaining pool with
10118          * the other PFs. We allocate space for more than the guarantee with
10119          * the understanding that we might not get them all later.
10120          */
10121         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
10122                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
10123         else
10124                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
10125
10126         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
10127         len = sizeof(struct i40e_vsi *) * pf->num_alloc_vsi;
10128         pf->vsi = kzalloc(len, GFP_KERNEL);
10129         if (!pf->vsi) {
10130                 err = -ENOMEM;
10131                 goto err_switch_setup;
10132         }
10133
10134 #ifdef CONFIG_PCI_IOV
10135         /* prep for VF support */
10136         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10137             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10138             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10139                 if (pci_num_vf(pdev))
10140                         pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
10141         }
10142 #endif
10143         err = i40e_setup_pf_switch(pf, false);
10144         if (err) {
10145                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
10146                 goto err_vsis;
10147         }
10148         /* if FDIR VSI was set up, start it now */
10149         for (i = 0; i < pf->num_alloc_vsi; i++) {
10150                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
10151                         i40e_vsi_open(pf->vsi[i]);
10152                         break;
10153                 }
10154         }
10155
10156         /* driver is only interested in link up/down and module qualification
10157          * reports from firmware
10158          */
10159         err = i40e_aq_set_phy_int_mask(&pf->hw,
10160                                        I40E_AQ_EVENT_LINK_UPDOWN |
10161                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
10162         if (err)
10163                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
10164                          i40e_stat_str(&pf->hw, err),
10165                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10166
10167         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
10168             (pf->hw.aq.fw_maj_ver < 4)) {
10169                 msleep(75);
10170                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
10171                 if (err)
10172                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
10173                                  i40e_stat_str(&pf->hw, err),
10174                                  i40e_aq_str(&pf->hw,
10175                                              pf->hw.aq.asq_last_status));
10176         }
10177         /* The main driver is (mostly) up and happy. We need to set this state
10178          * before setting up the misc vector or we get a race and the vector
10179          * ends up disabled forever.
10180          */
10181         clear_bit(__I40E_DOWN, &pf->state);
10182
10183         /* In case of MSIX we are going to setup the misc vector right here
10184          * to handle admin queue events etc. In case of legacy and MSI
10185          * the misc functionality and queue processing is combined in
10186          * the same vector and that gets setup at open.
10187          */
10188         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
10189                 err = i40e_setup_misc_vector(pf);
10190                 if (err) {
10191                         dev_info(&pdev->dev,
10192                                  "setup of misc vector failed: %d\n", err);
10193                         goto err_vsis;
10194                 }
10195         }
10196
10197 #ifdef CONFIG_PCI_IOV
10198         /* prep for VF support */
10199         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10200             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10201             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10202                 u32 val;
10203
10204                 /* disable link interrupts for VFs */
10205                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
10206                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
10207                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
10208                 i40e_flush(hw);
10209
10210                 if (pci_num_vf(pdev)) {
10211                         dev_info(&pdev->dev,
10212                                  "Active VFs found, allocating resources.\n");
10213                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
10214                         if (err)
10215                                 dev_info(&pdev->dev,
10216                                          "Error %d allocating resources for existing VFs\n",
10217                                          err);
10218                 }
10219         }
10220 #endif /* CONFIG_PCI_IOV */
10221
10222         pfs_found++;
10223
10224         i40e_dbg_pf_init(pf);
10225
10226         /* tell the firmware that we're starting */
10227         i40e_send_version(pf);
10228
10229         /* since everything's happy, start the service_task timer */
10230         mod_timer(&pf->service_timer,
10231                   round_jiffies(jiffies + pf->service_timer_period));
10232
10233 #ifdef I40E_FCOE
10234         /* create FCoE interface */
10235         i40e_fcoe_vsi_setup(pf);
10236
10237 #endif
10238         /* Get the negotiated link width and speed from PCI config space */
10239         pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA, &link_status);
10240
10241         i40e_set_pci_config_data(hw, link_status);
10242
10243         dev_info(&pdev->dev, "PCI-Express: %s %s\n",
10244                 (hw->bus.speed == i40e_bus_speed_8000 ? "Speed 8.0GT/s" :
10245                  hw->bus.speed == i40e_bus_speed_5000 ? "Speed 5.0GT/s" :
10246                  hw->bus.speed == i40e_bus_speed_2500 ? "Speed 2.5GT/s" :
10247                  "Unknown"),
10248                 (hw->bus.width == i40e_bus_width_pcie_x8 ? "Width x8" :
10249                  hw->bus.width == i40e_bus_width_pcie_x4 ? "Width x4" :
10250                  hw->bus.width == i40e_bus_width_pcie_x2 ? "Width x2" :
10251                  hw->bus.width == i40e_bus_width_pcie_x1 ? "Width x1" :
10252                  "Unknown"));
10253
10254         if (hw->bus.width < i40e_bus_width_pcie_x8 ||
10255             hw->bus.speed < i40e_bus_speed_8000) {
10256                 dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
10257                 dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
10258         }
10259
10260         /* get the requested speeds from the fw */
10261         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
10262         if (err)
10263                 dev_info(&pf->pdev->dev,
10264                          "get phy capabilities failed, err %s aq_err %s, advertised speed settings may not be correct\n",
10265                          i40e_stat_str(&pf->hw, err),
10266                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10267         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
10268
10269         /* print a string summarizing features */
10270         i40e_print_features(pf);
10271
10272         return 0;
10273
10274         /* Unwind what we've done if something failed in the setup */
10275 err_vsis:
10276         set_bit(__I40E_DOWN, &pf->state);
10277         i40e_clear_interrupt_scheme(pf);
10278         kfree(pf->vsi);
10279 err_switch_setup:
10280         i40e_reset_interrupt_capability(pf);
10281         del_timer_sync(&pf->service_timer);
10282 err_mac_addr:
10283 err_configure_lan_hmc:
10284         (void)i40e_shutdown_lan_hmc(hw);
10285 err_init_lan_hmc:
10286         kfree(pf->qp_pile);
10287 err_sw_init:
10288 err_adminq_setup:
10289         (void)i40e_shutdown_adminq(hw);
10290 err_pf_reset:
10291         iounmap(hw->hw_addr);
10292 err_ioremap:
10293         kfree(pf);
10294 err_pf_alloc:
10295         pci_disable_pcie_error_reporting(pdev);
10296         pci_release_selected_regions(pdev,
10297                                      pci_select_bars(pdev, IORESOURCE_MEM));
10298 err_pci_reg:
10299 err_dma:
10300         pci_disable_device(pdev);
10301         return err;
10302 }
10303
10304 /**
10305  * i40e_remove - Device removal routine
10306  * @pdev: PCI device information struct
10307  *
10308  * i40e_remove is called by the PCI subsystem to alert the driver
10309  * that is should release a PCI device.  This could be caused by a
10310  * Hot-Plug event, or because the driver is going to be removed from
10311  * memory.
10312  **/
10313 static void i40e_remove(struct pci_dev *pdev)
10314 {
10315         struct i40e_pf *pf = pci_get_drvdata(pdev);
10316         i40e_status ret_code;
10317         int i;
10318
10319         i40e_dbg_pf_exit(pf);
10320
10321         i40e_ptp_stop(pf);
10322
10323         /* no more scheduling of any task */
10324         set_bit(__I40E_DOWN, &pf->state);
10325         del_timer_sync(&pf->service_timer);
10326         cancel_work_sync(&pf->service_task);
10327         i40e_fdir_teardown(pf);
10328
10329         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
10330                 i40e_free_vfs(pf);
10331                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
10332         }
10333
10334         i40e_fdir_teardown(pf);
10335
10336         /* If there is a switch structure or any orphans, remove them.
10337          * This will leave only the PF's VSI remaining.
10338          */
10339         for (i = 0; i < I40E_MAX_VEB; i++) {
10340                 if (!pf->veb[i])
10341                         continue;
10342
10343                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
10344                     pf->veb[i]->uplink_seid == 0)
10345                         i40e_switch_branch_release(pf->veb[i]);
10346         }
10347
10348         /* Now we can shutdown the PF's VSI, just before we kill
10349          * adminq and hmc.
10350          */
10351         if (pf->vsi[pf->lan_vsi])
10352                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
10353
10354         /* shutdown and destroy the HMC */
10355         if (pf->hw.hmc.hmc_obj) {
10356                 ret_code = i40e_shutdown_lan_hmc(&pf->hw);
10357                 if (ret_code)
10358                         dev_warn(&pdev->dev,
10359                                  "Failed to destroy the HMC resources: %d\n",
10360                                  ret_code);
10361         }
10362
10363         /* shutdown the adminq */
10364         ret_code = i40e_shutdown_adminq(&pf->hw);
10365         if (ret_code)
10366                 dev_warn(&pdev->dev,
10367                          "Failed to destroy the Admin Queue resources: %d\n",
10368                          ret_code);
10369
10370         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
10371         i40e_clear_interrupt_scheme(pf);
10372         for (i = 0; i < pf->num_alloc_vsi; i++) {
10373                 if (pf->vsi[i]) {
10374                         i40e_vsi_clear_rings(pf->vsi[i]);
10375                         i40e_vsi_clear(pf->vsi[i]);
10376                         pf->vsi[i] = NULL;
10377                 }
10378         }
10379
10380         for (i = 0; i < I40E_MAX_VEB; i++) {
10381                 kfree(pf->veb[i]);
10382                 pf->veb[i] = NULL;
10383         }
10384
10385         kfree(pf->qp_pile);
10386         kfree(pf->vsi);
10387
10388         iounmap(pf->hw.hw_addr);
10389         kfree(pf);
10390         pci_release_selected_regions(pdev,
10391                                      pci_select_bars(pdev, IORESOURCE_MEM));
10392
10393         pci_disable_pcie_error_reporting(pdev);
10394         pci_disable_device(pdev);
10395 }
10396
10397 /**
10398  * i40e_pci_error_detected - warning that something funky happened in PCI land
10399  * @pdev: PCI device information struct
10400  *
10401  * Called to warn that something happened and the error handling steps
10402  * are in progress.  Allows the driver to quiesce things, be ready for
10403  * remediation.
10404  **/
10405 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
10406                                                 enum pci_channel_state error)
10407 {
10408         struct i40e_pf *pf = pci_get_drvdata(pdev);
10409
10410         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
10411
10412         /* shutdown all operations */
10413         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
10414                 rtnl_lock();
10415                 i40e_prep_for_reset(pf);
10416                 rtnl_unlock();
10417         }
10418
10419         /* Request a slot reset */
10420         return PCI_ERS_RESULT_NEED_RESET;
10421 }
10422
10423 /**
10424  * i40e_pci_error_slot_reset - a PCI slot reset just happened
10425  * @pdev: PCI device information struct
10426  *
10427  * Called to find if the driver can work with the device now that
10428  * the pci slot has been reset.  If a basic connection seems good
10429  * (registers are readable and have sane content) then return a
10430  * happy little PCI_ERS_RESULT_xxx.
10431  **/
10432 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
10433 {
10434         struct i40e_pf *pf = pci_get_drvdata(pdev);
10435         pci_ers_result_t result;
10436         int err;
10437         u32 reg;
10438
10439         dev_info(&pdev->dev, "%s\n", __func__);
10440         if (pci_enable_device_mem(pdev)) {
10441                 dev_info(&pdev->dev,
10442                          "Cannot re-enable PCI device after reset.\n");
10443                 result = PCI_ERS_RESULT_DISCONNECT;
10444         } else {
10445                 pci_set_master(pdev);
10446                 pci_restore_state(pdev);
10447                 pci_save_state(pdev);
10448                 pci_wake_from_d3(pdev, false);
10449
10450                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
10451                 if (reg == 0)
10452                         result = PCI_ERS_RESULT_RECOVERED;
10453                 else
10454                         result = PCI_ERS_RESULT_DISCONNECT;
10455         }
10456
10457         err = pci_cleanup_aer_uncorrect_error_status(pdev);
10458         if (err) {
10459                 dev_info(&pdev->dev,
10460                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
10461                          err);
10462                 /* non-fatal, continue */
10463         }
10464
10465         return result;
10466 }
10467
10468 /**
10469  * i40e_pci_error_resume - restart operations after PCI error recovery
10470  * @pdev: PCI device information struct
10471  *
10472  * Called to allow the driver to bring things back up after PCI error
10473  * and/or reset recovery has finished.
10474  **/
10475 static void i40e_pci_error_resume(struct pci_dev *pdev)
10476 {
10477         struct i40e_pf *pf = pci_get_drvdata(pdev);
10478
10479         dev_info(&pdev->dev, "%s\n", __func__);
10480         if (test_bit(__I40E_SUSPENDED, &pf->state))
10481                 return;
10482
10483         rtnl_lock();
10484         i40e_handle_reset_warning(pf);
10485         rtnl_lock();
10486 }
10487
10488 /**
10489  * i40e_shutdown - PCI callback for shutting down
10490  * @pdev: PCI device information struct
10491  **/
10492 static void i40e_shutdown(struct pci_dev *pdev)
10493 {
10494         struct i40e_pf *pf = pci_get_drvdata(pdev);
10495         struct i40e_hw *hw = &pf->hw;
10496
10497         set_bit(__I40E_SUSPENDED, &pf->state);
10498         set_bit(__I40E_DOWN, &pf->state);
10499         rtnl_lock();
10500         i40e_prep_for_reset(pf);
10501         rtnl_unlock();
10502
10503         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10504         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10505
10506         del_timer_sync(&pf->service_timer);
10507         cancel_work_sync(&pf->service_task);
10508         i40e_fdir_teardown(pf);
10509
10510         rtnl_lock();
10511         i40e_prep_for_reset(pf);
10512         rtnl_unlock();
10513
10514         wr32(hw, I40E_PFPM_APM,
10515              (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10516         wr32(hw, I40E_PFPM_WUFC,
10517              (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10518
10519         i40e_clear_interrupt_scheme(pf);
10520
10521         if (system_state == SYSTEM_POWER_OFF) {
10522                 pci_wake_from_d3(pdev, pf->wol_en);
10523                 pci_set_power_state(pdev, PCI_D3hot);
10524         }
10525 }
10526
10527 #ifdef CONFIG_PM
10528 /**
10529  * i40e_suspend - PCI callback for moving to D3
10530  * @pdev: PCI device information struct
10531  **/
10532 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
10533 {
10534         struct i40e_pf *pf = pci_get_drvdata(pdev);
10535         struct i40e_hw *hw = &pf->hw;
10536
10537         set_bit(__I40E_SUSPENDED, &pf->state);
10538         set_bit(__I40E_DOWN, &pf->state);
10539
10540         rtnl_lock();
10541         i40e_prep_for_reset(pf);
10542         rtnl_unlock();
10543
10544         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10545         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10546
10547         pci_wake_from_d3(pdev, pf->wol_en);
10548         pci_set_power_state(pdev, PCI_D3hot);
10549
10550         return 0;
10551 }
10552
10553 /**
10554  * i40e_resume - PCI callback for waking up from D3
10555  * @pdev: PCI device information struct
10556  **/
10557 static int i40e_resume(struct pci_dev *pdev)
10558 {
10559         struct i40e_pf *pf = pci_get_drvdata(pdev);
10560         u32 err;
10561
10562         pci_set_power_state(pdev, PCI_D0);
10563         pci_restore_state(pdev);
10564         /* pci_restore_state() clears dev->state_saves, so
10565          * call pci_save_state() again to restore it.
10566          */
10567         pci_save_state(pdev);
10568
10569         err = pci_enable_device_mem(pdev);
10570         if (err) {
10571                 dev_err(&pdev->dev,
10572                         "%s: Cannot enable PCI device from suspend\n",
10573                         __func__);
10574                 return err;
10575         }
10576         pci_set_master(pdev);
10577
10578         /* no wakeup events while running */
10579         pci_wake_from_d3(pdev, false);
10580
10581         /* handling the reset will rebuild the device state */
10582         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
10583                 clear_bit(__I40E_DOWN, &pf->state);
10584                 rtnl_lock();
10585                 i40e_reset_and_rebuild(pf, false);
10586                 rtnl_unlock();
10587         }
10588
10589         return 0;
10590 }
10591
10592 #endif
10593 static const struct pci_error_handlers i40e_err_handler = {
10594         .error_detected = i40e_pci_error_detected,
10595         .slot_reset = i40e_pci_error_slot_reset,
10596         .resume = i40e_pci_error_resume,
10597 };
10598
10599 static struct pci_driver i40e_driver = {
10600         .name     = i40e_driver_name,
10601         .id_table = i40e_pci_tbl,
10602         .probe    = i40e_probe,
10603         .remove   = i40e_remove,
10604 #ifdef CONFIG_PM
10605         .suspend  = i40e_suspend,
10606         .resume   = i40e_resume,
10607 #endif
10608         .shutdown = i40e_shutdown,
10609         .err_handler = &i40e_err_handler,
10610         .sriov_configure = i40e_pci_sriov_configure,
10611 };
10612
10613 /**
10614  * i40e_init_module - Driver registration routine
10615  *
10616  * i40e_init_module is the first routine called when the driver is
10617  * loaded. All it does is register with the PCI subsystem.
10618  **/
10619 static int __init i40e_init_module(void)
10620 {
10621         pr_info("%s: %s - version %s\n", i40e_driver_name,
10622                 i40e_driver_string, i40e_driver_version_str);
10623         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
10624
10625         i40e_dbg_init();
10626         return pci_register_driver(&i40e_driver);
10627 }
10628 module_init(i40e_init_module);
10629
10630 /**
10631  * i40e_exit_module - Driver exit cleanup routine
10632  *
10633  * i40e_exit_module is called just before the driver is removed
10634  * from memory.
10635  **/
10636 static void __exit i40e_exit_module(void)
10637 {
10638         pci_unregister_driver(&i40e_driver);
10639         i40e_dbg_exit();
10640 }
10641 module_exit(i40e_exit_module);