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         /* this controls whether VLAN is stripped from inner headers */
2676         rx_ctx.showiv = 0;
2677 #ifdef I40E_FCOE
2678         rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2679 #endif
2680         /* set the prefena field to 1 because the manual says to */
2681         rx_ctx.prefena = 1;
2682
2683         /* clear the context in the HMC */
2684         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2685         if (err) {
2686                 dev_info(&vsi->back->pdev->dev,
2687                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2688                          ring->queue_index, pf_q, err);
2689                 return -ENOMEM;
2690         }
2691
2692         /* set the context in the HMC */
2693         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2694         if (err) {
2695                 dev_info(&vsi->back->pdev->dev,
2696                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2697                          ring->queue_index, pf_q, err);
2698                 return -ENOMEM;
2699         }
2700
2701         /* cache tail for quicker writes, and clear the reg before use */
2702         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2703         writel(0, ring->tail);
2704
2705         if (ring_is_ps_enabled(ring)) {
2706                 i40e_alloc_rx_headers(ring);
2707                 i40e_alloc_rx_buffers_ps(ring, I40E_DESC_UNUSED(ring));
2708         } else {
2709                 i40e_alloc_rx_buffers_1buf(ring, I40E_DESC_UNUSED(ring));
2710         }
2711
2712         return 0;
2713 }
2714
2715 /**
2716  * i40e_vsi_configure_tx - Configure the VSI for Tx
2717  * @vsi: VSI structure describing this set of rings and resources
2718  *
2719  * Configure the Tx VSI for operation.
2720  **/
2721 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2722 {
2723         int err = 0;
2724         u16 i;
2725
2726         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2727                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2728
2729         return err;
2730 }
2731
2732 /**
2733  * i40e_vsi_configure_rx - Configure the VSI for Rx
2734  * @vsi: the VSI being configured
2735  *
2736  * Configure the Rx VSI for operation.
2737  **/
2738 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2739 {
2740         int err = 0;
2741         u16 i;
2742
2743         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2744                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2745                                + ETH_FCS_LEN + VLAN_HLEN;
2746         else
2747                 vsi->max_frame = I40E_RXBUFFER_2048;
2748
2749         /* figure out correct receive buffer length */
2750         switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2751                                     I40E_FLAG_RX_PS_ENABLED)) {
2752         case I40E_FLAG_RX_1BUF_ENABLED:
2753                 vsi->rx_hdr_len = 0;
2754                 vsi->rx_buf_len = vsi->max_frame;
2755                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2756                 break;
2757         case I40E_FLAG_RX_PS_ENABLED:
2758                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2759                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2760                 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2761                 break;
2762         default:
2763                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2764                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2765                 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2766                 break;
2767         }
2768
2769 #ifdef I40E_FCOE
2770         /* setup rx buffer for FCoE */
2771         if ((vsi->type == I40E_VSI_FCOE) &&
2772             (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
2773                 vsi->rx_hdr_len = 0;
2774                 vsi->rx_buf_len = I40E_RXBUFFER_3072;
2775                 vsi->max_frame = I40E_RXBUFFER_3072;
2776                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2777         }
2778
2779 #endif /* I40E_FCOE */
2780         /* round up for the chip's needs */
2781         vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
2782                                 BIT_ULL(I40E_RXQ_CTX_HBUFF_SHIFT));
2783         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2784                                 BIT_ULL(I40E_RXQ_CTX_DBUFF_SHIFT));
2785
2786         /* set up individual rings */
2787         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2788                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
2789
2790         return err;
2791 }
2792
2793 /**
2794  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
2795  * @vsi: ptr to the VSI
2796  **/
2797 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
2798 {
2799         struct i40e_ring *tx_ring, *rx_ring;
2800         u16 qoffset, qcount;
2801         int i, n;
2802
2803         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
2804                 /* Reset the TC information */
2805                 for (i = 0; i < vsi->num_queue_pairs; i++) {
2806                         rx_ring = vsi->rx_rings[i];
2807                         tx_ring = vsi->tx_rings[i];
2808                         rx_ring->dcb_tc = 0;
2809                         tx_ring->dcb_tc = 0;
2810                 }
2811         }
2812
2813         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
2814                 if (!(vsi->tc_config.enabled_tc & BIT_ULL(n)))
2815                         continue;
2816
2817                 qoffset = vsi->tc_config.tc_info[n].qoffset;
2818                 qcount = vsi->tc_config.tc_info[n].qcount;
2819                 for (i = qoffset; i < (qoffset + qcount); i++) {
2820                         rx_ring = vsi->rx_rings[i];
2821                         tx_ring = vsi->tx_rings[i];
2822                         rx_ring->dcb_tc = n;
2823                         tx_ring->dcb_tc = n;
2824                 }
2825         }
2826 }
2827
2828 /**
2829  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
2830  * @vsi: ptr to the VSI
2831  **/
2832 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
2833 {
2834         if (vsi->netdev)
2835                 i40e_set_rx_mode(vsi->netdev);
2836 }
2837
2838 /**
2839  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
2840  * @vsi: Pointer to the targeted VSI
2841  *
2842  * This function replays the hlist on the hw where all the SB Flow Director
2843  * filters were saved.
2844  **/
2845 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
2846 {
2847         struct i40e_fdir_filter *filter;
2848         struct i40e_pf *pf = vsi->back;
2849         struct hlist_node *node;
2850
2851         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
2852                 return;
2853
2854         hlist_for_each_entry_safe(filter, node,
2855                                   &pf->fdir_filter_list, fdir_node) {
2856                 i40e_add_del_fdir(vsi, filter, true);
2857         }
2858 }
2859
2860 /**
2861  * i40e_vsi_configure - Set up the VSI for action
2862  * @vsi: the VSI being configured
2863  **/
2864 static int i40e_vsi_configure(struct i40e_vsi *vsi)
2865 {
2866         int err;
2867
2868         i40e_set_vsi_rx_mode(vsi);
2869         i40e_restore_vlan(vsi);
2870         i40e_vsi_config_dcb_rings(vsi);
2871         err = i40e_vsi_configure_tx(vsi);
2872         if (!err)
2873                 err = i40e_vsi_configure_rx(vsi);
2874
2875         return err;
2876 }
2877
2878 /**
2879  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
2880  * @vsi: the VSI being configured
2881  **/
2882 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
2883 {
2884         struct i40e_pf *pf = vsi->back;
2885         struct i40e_q_vector *q_vector;
2886         struct i40e_hw *hw = &pf->hw;
2887         u16 vector;
2888         int i, q;
2889         u32 val;
2890         u32 qp;
2891
2892         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
2893          * and PFINT_LNKLSTn registers, e.g.:
2894          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
2895          */
2896         qp = vsi->base_queue;
2897         vector = vsi->base_vector;
2898         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
2899                 q_vector = vsi->q_vectors[i];
2900                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2901                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
2902                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
2903                      q_vector->rx.itr);
2904                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2905                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
2906                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
2907                      q_vector->tx.itr);
2908
2909                 /* Linked list for the queuepairs assigned to this vector */
2910                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
2911                 for (q = 0; q < q_vector->num_ringpairs; q++) {
2912                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
2913                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
2914                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
2915                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
2916                               (I40E_QUEUE_TYPE_TX
2917                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
2918
2919                         wr32(hw, I40E_QINT_RQCTL(qp), val);
2920
2921                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
2922                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
2923                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
2924                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
2925                               (I40E_QUEUE_TYPE_RX
2926                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2927
2928                         /* Terminate the linked list */
2929                         if (q == (q_vector->num_ringpairs - 1))
2930                                 val |= (I40E_QUEUE_END_OF_LIST
2931                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2932
2933                         wr32(hw, I40E_QINT_TQCTL(qp), val);
2934                         qp++;
2935                 }
2936         }
2937
2938         i40e_flush(hw);
2939 }
2940
2941 /**
2942  * i40e_enable_misc_int_causes - enable the non-queue interrupts
2943  * @hw: ptr to the hardware info
2944  **/
2945 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
2946 {
2947         struct i40e_hw *hw = &pf->hw;
2948         u32 val;
2949
2950         /* clear things first */
2951         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
2952         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
2953
2954         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
2955               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
2956               I40E_PFINT_ICR0_ENA_GRST_MASK          |
2957               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
2958               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
2959               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
2960               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
2961               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
2962
2963         if (pf->flags & I40E_FLAG_IWARP_ENABLED)
2964                 val |= I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
2965
2966         if (pf->flags & I40E_FLAG_PTP)
2967                 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
2968
2969         wr32(hw, I40E_PFINT_ICR0_ENA, val);
2970
2971         /* SW_ITR_IDX = 0, but don't change INTENA */
2972         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
2973                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
2974
2975         /* OTHER_ITR_IDX = 0 */
2976         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
2977 }
2978
2979 /**
2980  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
2981  * @vsi: the VSI being configured
2982  **/
2983 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
2984 {
2985         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
2986         struct i40e_pf *pf = vsi->back;
2987         struct i40e_hw *hw = &pf->hw;
2988         u32 val;
2989
2990         /* set the ITR configuration */
2991         q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2992         q_vector->rx.latency_range = I40E_LOW_LATENCY;
2993         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
2994         q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2995         q_vector->tx.latency_range = I40E_LOW_LATENCY;
2996         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
2997
2998         i40e_enable_misc_int_causes(pf);
2999
3000         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
3001         wr32(hw, I40E_PFINT_LNKLST0, 0);
3002
3003         /* Associate the queue pair to the vector and enable the queue int */
3004         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
3005               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
3006               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3007
3008         wr32(hw, I40E_QINT_RQCTL(0), val);
3009
3010         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
3011               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3012               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3013
3014         wr32(hw, I40E_QINT_TQCTL(0), val);
3015         i40e_flush(hw);
3016 }
3017
3018 /**
3019  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
3020  * @pf: board private structure
3021  **/
3022 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
3023 {
3024         struct i40e_hw *hw = &pf->hw;
3025
3026         wr32(hw, I40E_PFINT_DYN_CTL0,
3027              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
3028         i40e_flush(hw);
3029 }
3030
3031 /**
3032  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
3033  * @pf: board private structure
3034  **/
3035 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
3036 {
3037         struct i40e_hw *hw = &pf->hw;
3038         u32 val;
3039
3040         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
3041               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
3042               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
3043
3044         wr32(hw, I40E_PFINT_DYN_CTL0, val);
3045         i40e_flush(hw);
3046 }
3047
3048 /**
3049  * i40e_irq_dynamic_enable - Enable default interrupt generation settings
3050  * @vsi: pointer to a vsi
3051  * @vector: enable a particular Hw Interrupt vector
3052  **/
3053 void i40e_irq_dynamic_enable(struct i40e_vsi *vsi, int vector)
3054 {
3055         struct i40e_pf *pf = vsi->back;
3056         struct i40e_hw *hw = &pf->hw;
3057         u32 val;
3058
3059         val = I40E_PFINT_DYN_CTLN_INTENA_MASK |
3060               I40E_PFINT_DYN_CTLN_CLEARPBA_MASK |
3061               (I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
3062         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
3063         /* skip the flush */
3064 }
3065
3066 /**
3067  * i40e_irq_dynamic_disable - Disable default interrupt generation settings
3068  * @vsi: pointer to a vsi
3069  * @vector: disable a particular Hw Interrupt vector
3070  **/
3071 void i40e_irq_dynamic_disable(struct i40e_vsi *vsi, int vector)
3072 {
3073         struct i40e_pf *pf = vsi->back;
3074         struct i40e_hw *hw = &pf->hw;
3075         u32 val;
3076
3077         val = I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT;
3078         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
3079         i40e_flush(hw);
3080 }
3081
3082 /**
3083  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
3084  * @irq: interrupt number
3085  * @data: pointer to a q_vector
3086  **/
3087 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
3088 {
3089         struct i40e_q_vector *q_vector = data;
3090
3091         if (!q_vector->tx.ring && !q_vector->rx.ring)
3092                 return IRQ_HANDLED;
3093
3094         napi_schedule(&q_vector->napi);
3095
3096         return IRQ_HANDLED;
3097 }
3098
3099 /**
3100  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
3101  * @vsi: the VSI being configured
3102  * @basename: name for the vector
3103  *
3104  * Allocates MSI-X vectors and requests interrupts from the kernel.
3105  **/
3106 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
3107 {
3108         int q_vectors = vsi->num_q_vectors;
3109         struct i40e_pf *pf = vsi->back;
3110         int base = vsi->base_vector;
3111         int rx_int_idx = 0;
3112         int tx_int_idx = 0;
3113         int vector, err;
3114
3115         for (vector = 0; vector < q_vectors; vector++) {
3116                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
3117
3118                 if (q_vector->tx.ring && q_vector->rx.ring) {
3119                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3120                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
3121                         tx_int_idx++;
3122                 } else if (q_vector->rx.ring) {
3123                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3124                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
3125                 } else if (q_vector->tx.ring) {
3126                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3127                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
3128                 } else {
3129                         /* skip this unused q_vector */
3130                         continue;
3131                 }
3132                 err = request_irq(pf->msix_entries[base + vector].vector,
3133                                   vsi->irq_handler,
3134                                   0,
3135                                   q_vector->name,
3136                                   q_vector);
3137                 if (err) {
3138                         dev_info(&pf->pdev->dev,
3139                                  "%s: request_irq failed, error: %d\n",
3140                                  __func__, err);
3141                         goto free_queue_irqs;
3142                 }
3143                 /* assign the mask for this irq */
3144                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3145                                       &q_vector->affinity_mask);
3146         }
3147
3148         vsi->irqs_ready = true;
3149         return 0;
3150
3151 free_queue_irqs:
3152         while (vector) {
3153                 vector--;
3154                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3155                                       NULL);
3156                 free_irq(pf->msix_entries[base + vector].vector,
3157                          &(vsi->q_vectors[vector]));
3158         }
3159         return err;
3160 }
3161
3162 /**
3163  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3164  * @vsi: the VSI being un-configured
3165  **/
3166 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3167 {
3168         struct i40e_pf *pf = vsi->back;
3169         struct i40e_hw *hw = &pf->hw;
3170         int base = vsi->base_vector;
3171         int i;
3172
3173         for (i = 0; i < vsi->num_queue_pairs; i++) {
3174                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3175                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3176         }
3177
3178         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3179                 for (i = vsi->base_vector;
3180                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3181                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3182
3183                 i40e_flush(hw);
3184                 for (i = 0; i < vsi->num_q_vectors; i++)
3185                         synchronize_irq(pf->msix_entries[i + base].vector);
3186         } else {
3187                 /* Legacy and MSI mode - this stops all interrupt handling */
3188                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3189                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3190                 i40e_flush(hw);
3191                 synchronize_irq(pf->pdev->irq);
3192         }
3193 }
3194
3195 /**
3196  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3197  * @vsi: the VSI being configured
3198  **/
3199 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3200 {
3201         struct i40e_pf *pf = vsi->back;
3202         int i;
3203
3204         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3205                 for (i = vsi->base_vector;
3206                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3207                         i40e_irq_dynamic_enable(vsi, i);
3208         } else {
3209                 i40e_irq_dynamic_enable_icr0(pf);
3210         }
3211
3212         i40e_flush(&pf->hw);
3213         return 0;
3214 }
3215
3216 /**
3217  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3218  * @pf: board private structure
3219  **/
3220 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3221 {
3222         /* Disable ICR 0 */
3223         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3224         i40e_flush(&pf->hw);
3225 }
3226
3227 /**
3228  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3229  * @irq: interrupt number
3230  * @data: pointer to a q_vector
3231  *
3232  * This is the handler used for all MSI/Legacy interrupts, and deals
3233  * with both queue and non-queue interrupts.  This is also used in
3234  * MSIX mode to handle the non-queue interrupts.
3235  **/
3236 static irqreturn_t i40e_intr(int irq, void *data)
3237 {
3238         struct i40e_pf *pf = (struct i40e_pf *)data;
3239         struct i40e_hw *hw = &pf->hw;
3240         irqreturn_t ret = IRQ_NONE;
3241         u32 icr0, icr0_remaining;
3242         u32 val, ena_mask;
3243
3244         icr0 = rd32(hw, I40E_PFINT_ICR0);
3245         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3246
3247         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3248         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3249                 goto enable_intr;
3250
3251         /* if interrupt but no bits showing, must be SWINT */
3252         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3253             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3254                 pf->sw_int_count++;
3255
3256         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
3257             (ena_mask & I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK)) {
3258                 ena_mask &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3259                 icr0 &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3260                 dev_info(&pf->pdev->dev, "cleared PE_CRITERR\n");
3261         }
3262
3263         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3264         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3265
3266                 /* temporarily disable queue cause for NAPI processing */
3267                 u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
3268                 qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
3269                 wr32(hw, I40E_QINT_RQCTL(0), qval);
3270
3271                 qval = rd32(hw, I40E_QINT_TQCTL(0));
3272                 qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
3273                 wr32(hw, I40E_QINT_TQCTL(0), qval);
3274
3275                 if (!test_bit(__I40E_DOWN, &pf->state))
3276                         napi_schedule(&pf->vsi[pf->lan_vsi]->q_vectors[0]->napi);
3277         }
3278
3279         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3280                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3281                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3282         }
3283
3284         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3285                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3286                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3287         }
3288
3289         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3290                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3291                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3292         }
3293
3294         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3295                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3296                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3297                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3298                 val = rd32(hw, I40E_GLGEN_RSTAT);
3299                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3300                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3301                 if (val == I40E_RESET_CORER) {
3302                         pf->corer_count++;
3303                 } else if (val == I40E_RESET_GLOBR) {
3304                         pf->globr_count++;
3305                 } else if (val == I40E_RESET_EMPR) {
3306                         pf->empr_count++;
3307                         set_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state);
3308                 }
3309         }
3310
3311         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3312                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3313                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3314                 dev_info(&pf->pdev->dev, "HMC error info 0x%x, HMC error data 0x%x\n",
3315                          rd32(hw, I40E_PFHMC_ERRORINFO),
3316                          rd32(hw, I40E_PFHMC_ERRORDATA));
3317         }
3318
3319         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3320                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3321
3322                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3323                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3324                         i40e_ptp_tx_hwtstamp(pf);
3325                 }
3326         }
3327
3328         /* If a critical error is pending we have no choice but to reset the
3329          * device.
3330          * Report and mask out any remaining unexpected interrupts.
3331          */
3332         icr0_remaining = icr0 & ena_mask;
3333         if (icr0_remaining) {
3334                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3335                          icr0_remaining);
3336                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3337                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3338                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3339                         dev_info(&pf->pdev->dev, "device will be reset\n");
3340                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3341                         i40e_service_event_schedule(pf);
3342                 }
3343                 ena_mask &= ~icr0_remaining;
3344         }
3345         ret = IRQ_HANDLED;
3346
3347 enable_intr:
3348         /* re-enable interrupt causes */
3349         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3350         if (!test_bit(__I40E_DOWN, &pf->state)) {
3351                 i40e_service_event_schedule(pf);
3352                 i40e_irq_dynamic_enable_icr0(pf);
3353         }
3354
3355         return ret;
3356 }
3357
3358 /**
3359  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3360  * @tx_ring:  tx ring to clean
3361  * @budget:   how many cleans we're allowed
3362  *
3363  * Returns true if there's any budget left (e.g. the clean is finished)
3364  **/
3365 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3366 {
3367         struct i40e_vsi *vsi = tx_ring->vsi;
3368         u16 i = tx_ring->next_to_clean;
3369         struct i40e_tx_buffer *tx_buf;
3370         struct i40e_tx_desc *tx_desc;
3371
3372         tx_buf = &tx_ring->tx_bi[i];
3373         tx_desc = I40E_TX_DESC(tx_ring, i);
3374         i -= tx_ring->count;
3375
3376         do {
3377                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3378
3379                 /* if next_to_watch is not set then there is no work pending */
3380                 if (!eop_desc)
3381                         break;
3382
3383                 /* prevent any other reads prior to eop_desc */
3384                 read_barrier_depends();
3385
3386                 /* if the descriptor isn't done, no work yet to do */
3387                 if (!(eop_desc->cmd_type_offset_bsz &
3388                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3389                         break;
3390
3391                 /* clear next_to_watch to prevent false hangs */
3392                 tx_buf->next_to_watch = NULL;
3393
3394                 tx_desc->buffer_addr = 0;
3395                 tx_desc->cmd_type_offset_bsz = 0;
3396                 /* move past filter desc */
3397                 tx_buf++;
3398                 tx_desc++;
3399                 i++;
3400                 if (unlikely(!i)) {
3401                         i -= tx_ring->count;
3402                         tx_buf = tx_ring->tx_bi;
3403                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3404                 }
3405                 /* unmap skb header data */
3406                 dma_unmap_single(tx_ring->dev,
3407                                  dma_unmap_addr(tx_buf, dma),
3408                                  dma_unmap_len(tx_buf, len),
3409                                  DMA_TO_DEVICE);
3410                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3411                         kfree(tx_buf->raw_buf);
3412
3413                 tx_buf->raw_buf = NULL;
3414                 tx_buf->tx_flags = 0;
3415                 tx_buf->next_to_watch = NULL;
3416                 dma_unmap_len_set(tx_buf, len, 0);
3417                 tx_desc->buffer_addr = 0;
3418                 tx_desc->cmd_type_offset_bsz = 0;
3419
3420                 /* move us past the eop_desc for start of next FD desc */
3421                 tx_buf++;
3422                 tx_desc++;
3423                 i++;
3424                 if (unlikely(!i)) {
3425                         i -= tx_ring->count;
3426                         tx_buf = tx_ring->tx_bi;
3427                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3428                 }
3429
3430                 /* update budget accounting */
3431                 budget--;
3432         } while (likely(budget));
3433
3434         i += tx_ring->count;
3435         tx_ring->next_to_clean = i;
3436
3437         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED) {
3438                 i40e_irq_dynamic_enable(vsi,
3439                                 tx_ring->q_vector->v_idx + vsi->base_vector);
3440         }
3441         return budget > 0;
3442 }
3443
3444 /**
3445  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3446  * @irq: interrupt number
3447  * @data: pointer to a q_vector
3448  **/
3449 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3450 {
3451         struct i40e_q_vector *q_vector = data;
3452         struct i40e_vsi *vsi;
3453
3454         if (!q_vector->tx.ring)
3455                 return IRQ_HANDLED;
3456
3457         vsi = q_vector->tx.ring->vsi;
3458         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3459
3460         return IRQ_HANDLED;
3461 }
3462
3463 /**
3464  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3465  * @vsi: the VSI being configured
3466  * @v_idx: vector index
3467  * @qp_idx: queue pair index
3468  **/
3469 static void i40e_map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3470 {
3471         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3472         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3473         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3474
3475         tx_ring->q_vector = q_vector;
3476         tx_ring->next = q_vector->tx.ring;
3477         q_vector->tx.ring = tx_ring;
3478         q_vector->tx.count++;
3479
3480         rx_ring->q_vector = q_vector;
3481         rx_ring->next = q_vector->rx.ring;
3482         q_vector->rx.ring = rx_ring;
3483         q_vector->rx.count++;
3484 }
3485
3486 /**
3487  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3488  * @vsi: the VSI being configured
3489  *
3490  * This function maps descriptor rings to the queue-specific vectors
3491  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3492  * one vector per queue pair, but on a constrained vector budget, we
3493  * group the queue pairs as "efficiently" as possible.
3494  **/
3495 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3496 {
3497         int qp_remaining = vsi->num_queue_pairs;
3498         int q_vectors = vsi->num_q_vectors;
3499         int num_ringpairs;
3500         int v_start = 0;
3501         int qp_idx = 0;
3502
3503         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3504          * group them so there are multiple queues per vector.
3505          * It is also important to go through all the vectors available to be
3506          * sure that if we don't use all the vectors, that the remaining vectors
3507          * are cleared. This is especially important when decreasing the
3508          * number of queues in use.
3509          */
3510         for (; v_start < q_vectors; v_start++) {
3511                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3512
3513                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3514
3515                 q_vector->num_ringpairs = num_ringpairs;
3516
3517                 q_vector->rx.count = 0;
3518                 q_vector->tx.count = 0;
3519                 q_vector->rx.ring = NULL;
3520                 q_vector->tx.ring = NULL;
3521
3522                 while (num_ringpairs--) {
3523                         i40e_map_vector_to_qp(vsi, v_start, qp_idx);
3524                         qp_idx++;
3525                         qp_remaining--;
3526                 }
3527         }
3528 }
3529
3530 /**
3531  * i40e_vsi_request_irq - Request IRQ from the OS
3532  * @vsi: the VSI being configured
3533  * @basename: name for the vector
3534  **/
3535 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3536 {
3537         struct i40e_pf *pf = vsi->back;
3538         int err;
3539
3540         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3541                 err = i40e_vsi_request_irq_msix(vsi, basename);
3542         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3543                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3544                                   pf->int_name, pf);
3545         else
3546                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3547                                   pf->int_name, pf);
3548
3549         if (err)
3550                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3551
3552         return err;
3553 }
3554
3555 #ifdef CONFIG_NET_POLL_CONTROLLER
3556 /**
3557  * i40e_netpoll - A Polling 'interrupt'handler
3558  * @netdev: network interface device structure
3559  *
3560  * This is used by netconsole to send skbs without having to re-enable
3561  * interrupts.  It's not called while the normal interrupt routine is executing.
3562  **/
3563 #ifdef I40E_FCOE
3564 void i40e_netpoll(struct net_device *netdev)
3565 #else
3566 static void i40e_netpoll(struct net_device *netdev)
3567 #endif
3568 {
3569         struct i40e_netdev_priv *np = netdev_priv(netdev);
3570         struct i40e_vsi *vsi = np->vsi;
3571         struct i40e_pf *pf = vsi->back;
3572         int i;
3573
3574         /* if interface is down do nothing */
3575         if (test_bit(__I40E_DOWN, &vsi->state))
3576                 return;
3577
3578         pf->flags |= I40E_FLAG_IN_NETPOLL;
3579         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3580                 for (i = 0; i < vsi->num_q_vectors; i++)
3581                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3582         } else {
3583                 i40e_intr(pf->pdev->irq, netdev);
3584         }
3585         pf->flags &= ~I40E_FLAG_IN_NETPOLL;
3586 }
3587 #endif
3588
3589 /**
3590  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3591  * @pf: the PF being configured
3592  * @pf_q: the PF queue
3593  * @enable: enable or disable state of the queue
3594  *
3595  * This routine will wait for the given Tx queue of the PF to reach the
3596  * enabled or disabled state.
3597  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3598  * multiple retries; else will return 0 in case of success.
3599  **/
3600 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3601 {
3602         int i;
3603         u32 tx_reg;
3604
3605         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3606                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3607                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3608                         break;
3609
3610                 usleep_range(10, 20);
3611         }
3612         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3613                 return -ETIMEDOUT;
3614
3615         return 0;
3616 }
3617
3618 /**
3619  * i40e_vsi_control_tx - Start or stop a VSI's rings
3620  * @vsi: the VSI being configured
3621  * @enable: start or stop the rings
3622  **/
3623 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3624 {
3625         struct i40e_pf *pf = vsi->back;
3626         struct i40e_hw *hw = &pf->hw;
3627         int i, j, pf_q, ret = 0;
3628         u32 tx_reg;
3629
3630         pf_q = vsi->base_queue;
3631         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3632
3633                 /* warn the TX unit of coming changes */
3634                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3635                 if (!enable)
3636                         usleep_range(10, 20);
3637
3638                 for (j = 0; j < 50; j++) {
3639                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3640                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3641                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3642                                 break;
3643                         usleep_range(1000, 2000);
3644                 }
3645                 /* Skip if the queue is already in the requested state */
3646                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3647                         continue;
3648
3649                 /* turn on/off the queue */
3650                 if (enable) {
3651                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3652                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3653                 } else {
3654                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3655                 }
3656
3657                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3658                 /* No waiting for the Tx queue to disable */
3659                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3660                         continue;
3661
3662                 /* wait for the change to finish */
3663                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3664                 if (ret) {
3665                         dev_info(&pf->pdev->dev,
3666                                  "%s: VSI seid %d Tx ring %d %sable timeout\n",
3667                                  __func__, vsi->seid, pf_q,
3668                                  (enable ? "en" : "dis"));
3669                         break;
3670                 }
3671         }
3672
3673         if (hw->revision_id == 0)
3674                 mdelay(50);
3675         return ret;
3676 }
3677
3678 /**
3679  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
3680  * @pf: the PF being configured
3681  * @pf_q: the PF queue
3682  * @enable: enable or disable state of the queue
3683  *
3684  * This routine will wait for the given Rx queue of the PF to reach the
3685  * enabled or disabled state.
3686  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3687  * multiple retries; else will return 0 in case of success.
3688  **/
3689 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3690 {
3691         int i;
3692         u32 rx_reg;
3693
3694         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3695                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
3696                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3697                         break;
3698
3699                 usleep_range(10, 20);
3700         }
3701         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3702                 return -ETIMEDOUT;
3703
3704         return 0;
3705 }
3706
3707 /**
3708  * i40e_vsi_control_rx - Start or stop a VSI's rings
3709  * @vsi: the VSI being configured
3710  * @enable: start or stop the rings
3711  **/
3712 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3713 {
3714         struct i40e_pf *pf = vsi->back;
3715         struct i40e_hw *hw = &pf->hw;
3716         int i, j, pf_q, ret = 0;
3717         u32 rx_reg;
3718
3719         pf_q = vsi->base_queue;
3720         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3721                 for (j = 0; j < 50; j++) {
3722                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3723                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3724                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3725                                 break;
3726                         usleep_range(1000, 2000);
3727                 }
3728
3729                 /* Skip if the queue is already in the requested state */
3730                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3731                         continue;
3732
3733                 /* turn on/off the queue */
3734                 if (enable)
3735                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3736                 else
3737                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3738                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3739
3740                 /* wait for the change to finish */
3741                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
3742                 if (ret) {
3743                         dev_info(&pf->pdev->dev,
3744                                  "%s: VSI seid %d Rx ring %d %sable timeout\n",
3745                                  __func__, vsi->seid, pf_q,
3746                                  (enable ? "en" : "dis"));
3747                         break;
3748                 }
3749         }
3750
3751         return ret;
3752 }
3753
3754 /**
3755  * i40e_vsi_control_rings - Start or stop a VSI's rings
3756  * @vsi: the VSI being configured
3757  * @enable: start or stop the rings
3758  **/
3759 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3760 {
3761         int ret = 0;
3762
3763         /* do rx first for enable and last for disable */
3764         if (request) {
3765                 ret = i40e_vsi_control_rx(vsi, request);
3766                 if (ret)
3767                         return ret;
3768                 ret = i40e_vsi_control_tx(vsi, request);
3769         } else {
3770                 /* Ignore return value, we need to shutdown whatever we can */
3771                 i40e_vsi_control_tx(vsi, request);
3772                 i40e_vsi_control_rx(vsi, request);
3773         }
3774
3775         return ret;
3776 }
3777
3778 /**
3779  * i40e_vsi_free_irq - Free the irq association with the OS
3780  * @vsi: the VSI being configured
3781  **/
3782 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3783 {
3784         struct i40e_pf *pf = vsi->back;
3785         struct i40e_hw *hw = &pf->hw;
3786         int base = vsi->base_vector;
3787         u32 val, qp;
3788         int i;
3789
3790         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3791                 if (!vsi->q_vectors)
3792                         return;
3793
3794                 if (!vsi->irqs_ready)
3795                         return;
3796
3797                 vsi->irqs_ready = false;
3798                 for (i = 0; i < vsi->num_q_vectors; i++) {
3799                         u16 vector = i + base;
3800
3801                         /* free only the irqs that were actually requested */
3802                         if (!vsi->q_vectors[i] ||
3803                             !vsi->q_vectors[i]->num_ringpairs)
3804                                 continue;
3805
3806                         /* clear the affinity_mask in the IRQ descriptor */
3807                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
3808                                               NULL);
3809                         free_irq(pf->msix_entries[vector].vector,
3810                                  vsi->q_vectors[i]);
3811
3812                         /* Tear down the interrupt queue link list
3813                          *
3814                          * We know that they come in pairs and always
3815                          * the Rx first, then the Tx.  To clear the
3816                          * link list, stick the EOL value into the
3817                          * next_q field of the registers.
3818                          */
3819                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
3820                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3821                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3822                         val |= I40E_QUEUE_END_OF_LIST
3823                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3824                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
3825
3826                         while (qp != I40E_QUEUE_END_OF_LIST) {
3827                                 u32 next;
3828
3829                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3830
3831                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3832                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3833                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3834                                          I40E_QINT_RQCTL_INTEVENT_MASK);
3835
3836                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3837                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3838
3839                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3840
3841                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3842
3843                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
3844                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
3845
3846                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3847                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3848                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3849                                          I40E_QINT_TQCTL_INTEVENT_MASK);
3850
3851                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3852                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3853
3854                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3855                                 qp = next;
3856                         }
3857                 }
3858         } else {
3859                 free_irq(pf->pdev->irq, pf);
3860
3861                 val = rd32(hw, I40E_PFINT_LNKLST0);
3862                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3863                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3864                 val |= I40E_QUEUE_END_OF_LIST
3865                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
3866                 wr32(hw, I40E_PFINT_LNKLST0, val);
3867
3868                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3869                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3870                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3871                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3872                          I40E_QINT_RQCTL_INTEVENT_MASK);
3873
3874                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3875                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3876
3877                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3878
3879                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3880
3881                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3882                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3883                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3884                          I40E_QINT_TQCTL_INTEVENT_MASK);
3885
3886                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3887                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3888
3889                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3890         }
3891 }
3892
3893 /**
3894  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
3895  * @vsi: the VSI being configured
3896  * @v_idx: Index of vector to be freed
3897  *
3898  * This function frees the memory allocated to the q_vector.  In addition if
3899  * NAPI is enabled it will delete any references to the NAPI struct prior
3900  * to freeing the q_vector.
3901  **/
3902 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
3903 {
3904         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3905         struct i40e_ring *ring;
3906
3907         if (!q_vector)
3908                 return;
3909
3910         /* disassociate q_vector from rings */
3911         i40e_for_each_ring(ring, q_vector->tx)
3912                 ring->q_vector = NULL;
3913
3914         i40e_for_each_ring(ring, q_vector->rx)
3915                 ring->q_vector = NULL;
3916
3917         /* only VSI w/ an associated netdev is set up w/ NAPI */
3918         if (vsi->netdev)
3919                 netif_napi_del(&q_vector->napi);
3920
3921         vsi->q_vectors[v_idx] = NULL;
3922
3923         kfree_rcu(q_vector, rcu);
3924 }
3925
3926 /**
3927  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
3928  * @vsi: the VSI being un-configured
3929  *
3930  * This frees the memory allocated to the q_vectors and
3931  * deletes references to the NAPI struct.
3932  **/
3933 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
3934 {
3935         int v_idx;
3936
3937         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
3938                 i40e_free_q_vector(vsi, v_idx);
3939 }
3940
3941 /**
3942  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
3943  * @pf: board private structure
3944  **/
3945 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
3946 {
3947         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
3948         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3949                 pci_disable_msix(pf->pdev);
3950                 kfree(pf->msix_entries);
3951                 pf->msix_entries = NULL;
3952                 kfree(pf->irq_pile);
3953                 pf->irq_pile = NULL;
3954         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
3955                 pci_disable_msi(pf->pdev);
3956         }
3957         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
3958 }
3959
3960 /**
3961  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
3962  * @pf: board private structure
3963  *
3964  * We go through and clear interrupt specific resources and reset the structure
3965  * to pre-load conditions
3966  **/
3967 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
3968 {
3969         int i;
3970
3971         i40e_stop_misc_vector(pf);
3972         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3973                 synchronize_irq(pf->msix_entries[0].vector);
3974                 free_irq(pf->msix_entries[0].vector, pf);
3975         }
3976
3977         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
3978         for (i = 0; i < pf->num_alloc_vsi; i++)
3979                 if (pf->vsi[i])
3980                         i40e_vsi_free_q_vectors(pf->vsi[i]);
3981         i40e_reset_interrupt_capability(pf);
3982 }
3983
3984 /**
3985  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
3986  * @vsi: the VSI being configured
3987  **/
3988 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
3989 {
3990         int q_idx;
3991
3992         if (!vsi->netdev)
3993                 return;
3994
3995         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3996                 napi_enable(&vsi->q_vectors[q_idx]->napi);
3997 }
3998
3999 /**
4000  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
4001  * @vsi: the VSI being configured
4002  **/
4003 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
4004 {
4005         int q_idx;
4006
4007         if (!vsi->netdev)
4008                 return;
4009
4010         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4011                 napi_disable(&vsi->q_vectors[q_idx]->napi);
4012 }
4013
4014 /**
4015  * i40e_vsi_close - Shut down a VSI
4016  * @vsi: the vsi to be quelled
4017  **/
4018 static void i40e_vsi_close(struct i40e_vsi *vsi)
4019 {
4020         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
4021                 i40e_down(vsi);
4022         i40e_vsi_free_irq(vsi);
4023         i40e_vsi_free_tx_resources(vsi);
4024         i40e_vsi_free_rx_resources(vsi);
4025         vsi->current_netdev_flags = 0;
4026 }
4027
4028 /**
4029  * i40e_quiesce_vsi - Pause a given VSI
4030  * @vsi: the VSI being paused
4031  **/
4032 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
4033 {
4034         if (test_bit(__I40E_DOWN, &vsi->state))
4035                 return;
4036
4037         /* No need to disable FCoE VSI when Tx suspended */
4038         if ((test_bit(__I40E_PORT_TX_SUSPENDED, &vsi->back->state)) &&
4039             vsi->type == I40E_VSI_FCOE) {
4040                 dev_dbg(&vsi->back->pdev->dev,
4041                         "%s: VSI seid %d skipping FCoE VSI disable\n",
4042                          __func__, vsi->seid);
4043                 return;
4044         }
4045
4046         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
4047         if (vsi->netdev && netif_running(vsi->netdev)) {
4048                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
4049         } else {
4050                 i40e_vsi_close(vsi);
4051         }
4052 }
4053
4054 /**
4055  * i40e_unquiesce_vsi - Resume a given VSI
4056  * @vsi: the VSI being resumed
4057  **/
4058 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
4059 {
4060         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
4061                 return;
4062
4063         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
4064         if (vsi->netdev && netif_running(vsi->netdev))
4065                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
4066         else
4067                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
4068 }
4069
4070 /**
4071  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
4072  * @pf: the PF
4073  **/
4074 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
4075 {
4076         int v;
4077
4078         for (v = 0; v < pf->num_alloc_vsi; v++) {
4079                 if (pf->vsi[v])
4080                         i40e_quiesce_vsi(pf->vsi[v]);
4081         }
4082 }
4083
4084 /**
4085  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
4086  * @pf: the PF
4087  **/
4088 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
4089 {
4090         int v;
4091
4092         for (v = 0; v < pf->num_alloc_vsi; v++) {
4093                 if (pf->vsi[v])
4094                         i40e_unquiesce_vsi(pf->vsi[v]);
4095         }
4096 }
4097
4098 #ifdef CONFIG_I40E_DCB
4099 /**
4100  * i40e_vsi_wait_txq_disabled - Wait for VSI's queues to be disabled
4101  * @vsi: the VSI being configured
4102  *
4103  * This function waits for the given VSI's Tx queues to be disabled.
4104  **/
4105 static int i40e_vsi_wait_txq_disabled(struct i40e_vsi *vsi)
4106 {
4107         struct i40e_pf *pf = vsi->back;
4108         int i, pf_q, ret;
4109
4110         pf_q = vsi->base_queue;
4111         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4112                 /* Check and wait for the disable status of the queue */
4113                 ret = i40e_pf_txq_wait(pf, pf_q, false);
4114                 if (ret) {
4115                         dev_info(&pf->pdev->dev,
4116                                  "%s: VSI seid %d Tx ring %d disable timeout\n",
4117                                  __func__, vsi->seid, pf_q);
4118                         return ret;
4119                 }
4120         }
4121
4122         return 0;
4123 }
4124
4125 /**
4126  * i40e_pf_wait_txq_disabled - Wait for all queues of PF VSIs to be disabled
4127  * @pf: the PF
4128  *
4129  * This function waits for the Tx queues to be in disabled state for all the
4130  * VSIs that are managed by this PF.
4131  **/
4132 static int i40e_pf_wait_txq_disabled(struct i40e_pf *pf)
4133 {
4134         int v, ret = 0;
4135
4136         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4137                 /* No need to wait for FCoE VSI queues */
4138                 if (pf->vsi[v] && pf->vsi[v]->type != I40E_VSI_FCOE) {
4139                         ret = i40e_vsi_wait_txq_disabled(pf->vsi[v]);
4140                         if (ret)
4141                                 break;
4142                 }
4143         }
4144
4145         return ret;
4146 }
4147
4148 #endif
4149 /**
4150  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
4151  * @pf: pointer to PF
4152  *
4153  * Get TC map for ISCSI PF type that will include iSCSI TC
4154  * and LAN TC.
4155  **/
4156 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
4157 {
4158         struct i40e_dcb_app_priority_table app;
4159         struct i40e_hw *hw = &pf->hw;
4160         u8 enabled_tc = 1; /* TC0 is always enabled */
4161         u8 tc, i;
4162         /* Get the iSCSI APP TLV */
4163         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4164
4165         for (i = 0; i < dcbcfg->numapps; i++) {
4166                 app = dcbcfg->app[i];
4167                 if (app.selector == I40E_APP_SEL_TCPIP &&
4168                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
4169                         tc = dcbcfg->etscfg.prioritytable[app.priority];
4170                         enabled_tc |= BIT_ULL(tc);
4171                         break;
4172                 }
4173         }
4174
4175         return enabled_tc;
4176 }
4177
4178 /**
4179  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
4180  * @dcbcfg: the corresponding DCBx configuration structure
4181  *
4182  * Return the number of TCs from given DCBx configuration
4183  **/
4184 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
4185 {
4186         u8 num_tc = 0;
4187         int i;
4188
4189         /* Scan the ETS Config Priority Table to find
4190          * traffic class enabled for a given priority
4191          * and use the traffic class index to get the
4192          * number of traffic classes enabled
4193          */
4194         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4195                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
4196                         num_tc = dcbcfg->etscfg.prioritytable[i];
4197         }
4198
4199         /* Traffic class index starts from zero so
4200          * increment to return the actual count
4201          */
4202         return num_tc + 1;
4203 }
4204
4205 /**
4206  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
4207  * @dcbcfg: the corresponding DCBx configuration structure
4208  *
4209  * Query the current DCB configuration and return the number of
4210  * traffic classes enabled from the given DCBX config
4211  **/
4212 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
4213 {
4214         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
4215         u8 enabled_tc = 1;
4216         u8 i;
4217
4218         for (i = 0; i < num_tc; i++)
4219                 enabled_tc |= BIT(i);
4220
4221         return enabled_tc;
4222 }
4223
4224 /**
4225  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
4226  * @pf: PF being queried
4227  *
4228  * Return number of traffic classes enabled for the given PF
4229  **/
4230 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
4231 {
4232         struct i40e_hw *hw = &pf->hw;
4233         u8 i, enabled_tc;
4234         u8 num_tc = 0;
4235         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4236
4237         /* If DCB is not enabled then always in single TC */
4238         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4239                 return 1;
4240
4241         /* SFP mode will be enabled for all TCs on port */
4242         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4243                 return i40e_dcb_get_num_tc(dcbcfg);
4244
4245         /* MFP mode return count of enabled TCs for this PF */
4246         if (pf->hw.func_caps.iscsi)
4247                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
4248         else
4249                 return 1; /* Only TC0 */
4250
4251         /* At least have TC0 */
4252         enabled_tc = (enabled_tc ? enabled_tc : 0x1);
4253         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4254                 if (enabled_tc & BIT_ULL(i))
4255                         num_tc++;
4256         }
4257         return num_tc;
4258 }
4259
4260 /**
4261  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
4262  * @pf: PF being queried
4263  *
4264  * Return a bitmap for first enabled traffic class for this PF.
4265  **/
4266 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
4267 {
4268         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
4269         u8 i = 0;
4270
4271         if (!enabled_tc)
4272                 return 0x1; /* TC0 */
4273
4274         /* Find the first enabled TC */
4275         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4276                 if (enabled_tc & BIT_ULL(i))
4277                         break;
4278         }
4279
4280         return BIT(i);
4281 }
4282
4283 /**
4284  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4285  * @pf: PF being queried
4286  *
4287  * Return a bitmap for enabled traffic classes for this PF.
4288  **/
4289 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4290 {
4291         /* If DCB is not enabled for this PF then just return default TC */
4292         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4293                 return i40e_pf_get_default_tc(pf);
4294
4295         /* SFP mode we want PF to be enabled for all TCs */
4296         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4297                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4298
4299         /* MFP enabled and iSCSI PF type */
4300         if (pf->hw.func_caps.iscsi)
4301                 return i40e_get_iscsi_tc_map(pf);
4302         else
4303                 return i40e_pf_get_default_tc(pf);
4304 }
4305
4306 /**
4307  * i40e_vsi_get_bw_info - Query VSI BW Information
4308  * @vsi: the VSI being queried
4309  *
4310  * Returns 0 on success, negative value on failure
4311  **/
4312 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4313 {
4314         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4315         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4316         struct i40e_pf *pf = vsi->back;
4317         struct i40e_hw *hw = &pf->hw;
4318         i40e_status ret;
4319         u32 tc_bw_max;
4320         int i;
4321
4322         /* Get the VSI level BW configuration */
4323         ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4324         if (ret) {
4325                 dev_info(&pf->pdev->dev,
4326                          "couldn't get PF vsi bw config, err %s aq_err %s\n",
4327                          i40e_stat_str(&pf->hw, ret),
4328                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4329                 return -EINVAL;
4330         }
4331
4332         /* Get the VSI level BW configuration per TC */
4333         ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4334                                                NULL);
4335         if (ret) {
4336                 dev_info(&pf->pdev->dev,
4337                          "couldn't get PF vsi ets bw config, err %s aq_err %s\n",
4338                          i40e_stat_str(&pf->hw, ret),
4339                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4340                 return -EINVAL;
4341         }
4342
4343         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4344                 dev_info(&pf->pdev->dev,
4345                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4346                          bw_config.tc_valid_bits,
4347                          bw_ets_config.tc_valid_bits);
4348                 /* Still continuing */
4349         }
4350
4351         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4352         vsi->bw_max_quanta = bw_config.max_bw;
4353         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4354                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4355         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4356                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4357                 vsi->bw_ets_limit_credits[i] =
4358                                         le16_to_cpu(bw_ets_config.credits[i]);
4359                 /* 3 bits out of 4 for each TC */
4360                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4361         }
4362
4363         return 0;
4364 }
4365
4366 /**
4367  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4368  * @vsi: the VSI being configured
4369  * @enabled_tc: TC bitmap
4370  * @bw_credits: BW shared credits per TC
4371  *
4372  * Returns 0 on success, negative value on failure
4373  **/
4374 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4375                                        u8 *bw_share)
4376 {
4377         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4378         i40e_status ret;
4379         int i;
4380
4381         bw_data.tc_valid_bits = enabled_tc;
4382         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4383                 bw_data.tc_bw_credits[i] = bw_share[i];
4384
4385         ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4386                                        NULL);
4387         if (ret) {
4388                 dev_info(&vsi->back->pdev->dev,
4389                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4390                          vsi->back->hw.aq.asq_last_status);
4391                 return -EINVAL;
4392         }
4393
4394         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4395                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4396
4397         return 0;
4398 }
4399
4400 /**
4401  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4402  * @vsi: the VSI being configured
4403  * @enabled_tc: TC map to be enabled
4404  *
4405  **/
4406 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4407 {
4408         struct net_device *netdev = vsi->netdev;
4409         struct i40e_pf *pf = vsi->back;
4410         struct i40e_hw *hw = &pf->hw;
4411         u8 netdev_tc = 0;
4412         int i;
4413         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4414
4415         if (!netdev)
4416                 return;
4417
4418         if (!enabled_tc) {
4419                 netdev_reset_tc(netdev);
4420                 return;
4421         }
4422
4423         /* Set up actual enabled TCs on the VSI */
4424         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4425                 return;
4426
4427         /* set per TC queues for the VSI */
4428         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4429                 /* Only set TC queues for enabled tcs
4430                  *
4431                  * e.g. For a VSI that has TC0 and TC3 enabled the
4432                  * enabled_tc bitmap would be 0x00001001; the driver
4433                  * will set the numtc for netdev as 2 that will be
4434                  * referenced by the netdev layer as TC 0 and 1.
4435                  */
4436                 if (vsi->tc_config.enabled_tc & BIT_ULL(i))
4437                         netdev_set_tc_queue(netdev,
4438                                         vsi->tc_config.tc_info[i].netdev_tc,
4439                                         vsi->tc_config.tc_info[i].qcount,
4440                                         vsi->tc_config.tc_info[i].qoffset);
4441         }
4442
4443         /* Assign UP2TC map for the VSI */
4444         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4445                 /* Get the actual TC# for the UP */
4446                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4447                 /* Get the mapped netdev TC# for the UP */
4448                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4449                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4450         }
4451 }
4452
4453 /**
4454  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4455  * @vsi: the VSI being configured
4456  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4457  **/
4458 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4459                                       struct i40e_vsi_context *ctxt)
4460 {
4461         /* copy just the sections touched not the entire info
4462          * since not all sections are valid as returned by
4463          * update vsi params
4464          */
4465         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4466         memcpy(&vsi->info.queue_mapping,
4467                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4468         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4469                sizeof(vsi->info.tc_mapping));
4470 }
4471
4472 /**
4473  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4474  * @vsi: VSI to be configured
4475  * @enabled_tc: TC bitmap
4476  *
4477  * This configures a particular VSI for TCs that are mapped to the
4478  * given TC bitmap. It uses default bandwidth share for TCs across
4479  * VSIs to configure TC for a particular VSI.
4480  *
4481  * NOTE:
4482  * It is expected that the VSI queues have been quisced before calling
4483  * this function.
4484  **/
4485 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4486 {
4487         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4488         struct i40e_vsi_context ctxt;
4489         int ret = 0;
4490         int i;
4491
4492         /* Check if enabled_tc is same as existing or new TCs */
4493         if (vsi->tc_config.enabled_tc == enabled_tc)
4494                 return ret;
4495
4496         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4497         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4498                 if (enabled_tc & BIT_ULL(i))
4499                         bw_share[i] = 1;
4500         }
4501
4502         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4503         if (ret) {
4504                 dev_info(&vsi->back->pdev->dev,
4505                          "Failed configuring TC map %d for VSI %d\n",
4506                          enabled_tc, vsi->seid);
4507                 goto out;
4508         }
4509
4510         /* Update Queue Pairs Mapping for currently enabled UPs */
4511         ctxt.seid = vsi->seid;
4512         ctxt.pf_num = vsi->back->hw.pf_id;
4513         ctxt.vf_num = 0;
4514         ctxt.uplink_seid = vsi->uplink_seid;
4515         ctxt.info = vsi->info;
4516         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4517
4518         /* Update the VSI after updating the VSI queue-mapping information */
4519         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4520         if (ret) {
4521                 dev_info(&vsi->back->pdev->dev,
4522                          "Update vsi tc config failed, err %s aq_err %s\n",
4523                          i40e_stat_str(&vsi->back->hw, ret),
4524                          i40e_aq_str(&vsi->back->hw,
4525                                      vsi->back->hw.aq.asq_last_status));
4526                 goto out;
4527         }
4528         /* update the local VSI info with updated queue map */
4529         i40e_vsi_update_queue_map(vsi, &ctxt);
4530         vsi->info.valid_sections = 0;
4531
4532         /* Update current VSI BW information */
4533         ret = i40e_vsi_get_bw_info(vsi);
4534         if (ret) {
4535                 dev_info(&vsi->back->pdev->dev,
4536                          "Failed updating vsi bw info, err %s aq_err %s\n",
4537                          i40e_stat_str(&vsi->back->hw, ret),
4538                          i40e_aq_str(&vsi->back->hw,
4539                                      vsi->back->hw.aq.asq_last_status));
4540                 goto out;
4541         }
4542
4543         /* Update the netdev TC setup */
4544         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4545 out:
4546         return ret;
4547 }
4548
4549 /**
4550  * i40e_veb_config_tc - Configure TCs for given VEB
4551  * @veb: given VEB
4552  * @enabled_tc: TC bitmap
4553  *
4554  * Configures given TC bitmap for VEB (switching) element
4555  **/
4556 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4557 {
4558         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4559         struct i40e_pf *pf = veb->pf;
4560         int ret = 0;
4561         int i;
4562
4563         /* No TCs or already enabled TCs just return */
4564         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4565                 return ret;
4566
4567         bw_data.tc_valid_bits = enabled_tc;
4568         /* bw_data.absolute_credits is not set (relative) */
4569
4570         /* Enable ETS TCs with equal BW Share for now */
4571         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4572                 if (enabled_tc & BIT_ULL(i))
4573                         bw_data.tc_bw_share_credits[i] = 1;
4574         }
4575
4576         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4577                                                    &bw_data, NULL);
4578         if (ret) {
4579                 dev_info(&pf->pdev->dev,
4580                          "VEB bw config failed, err %s aq_err %s\n",
4581                          i40e_stat_str(&pf->hw, ret),
4582                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4583                 goto out;
4584         }
4585
4586         /* Update the BW information */
4587         ret = i40e_veb_get_bw_info(veb);
4588         if (ret) {
4589                 dev_info(&pf->pdev->dev,
4590                          "Failed getting veb bw config, err %s aq_err %s\n",
4591                          i40e_stat_str(&pf->hw, ret),
4592                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4593         }
4594
4595 out:
4596         return ret;
4597 }
4598
4599 #ifdef CONFIG_I40E_DCB
4600 /**
4601  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4602  * @pf: PF struct
4603  *
4604  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4605  * the caller would've quiesce all the VSIs before calling
4606  * this function
4607  **/
4608 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4609 {
4610         u8 tc_map = 0;
4611         int ret;
4612         u8 v;
4613
4614         /* Enable the TCs available on PF to all VEBs */
4615         tc_map = i40e_pf_get_tc_map(pf);
4616         for (v = 0; v < I40E_MAX_VEB; v++) {
4617                 if (!pf->veb[v])
4618                         continue;
4619                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4620                 if (ret) {
4621                         dev_info(&pf->pdev->dev,
4622                                  "Failed configuring TC for VEB seid=%d\n",
4623                                  pf->veb[v]->seid);
4624                         /* Will try to configure as many components */
4625                 }
4626         }
4627
4628         /* Update each VSI */
4629         for (v = 0; v < pf->num_alloc_vsi; v++) {
4630                 if (!pf->vsi[v])
4631                         continue;
4632
4633                 /* - Enable all TCs for the LAN VSI
4634 #ifdef I40E_FCOE
4635                  * - For FCoE VSI only enable the TC configured
4636                  *   as per the APP TLV
4637 #endif
4638                  * - For all others keep them at TC0 for now
4639                  */
4640                 if (v == pf->lan_vsi)
4641                         tc_map = i40e_pf_get_tc_map(pf);
4642                 else
4643                         tc_map = i40e_pf_get_default_tc(pf);
4644 #ifdef I40E_FCOE
4645                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
4646                         tc_map = i40e_get_fcoe_tc_map(pf);
4647 #endif /* #ifdef I40E_FCOE */
4648
4649                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4650                 if (ret) {
4651                         dev_info(&pf->pdev->dev,
4652                                  "Failed configuring TC for VSI seid=%d\n",
4653                                  pf->vsi[v]->seid);
4654                         /* Will try to configure as many components */
4655                 } else {
4656                         /* Re-configure VSI vectors based on updated TC map */
4657                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
4658                         if (pf->vsi[v]->netdev)
4659                                 i40e_dcbnl_set_all(pf->vsi[v]);
4660                 }
4661         }
4662 }
4663
4664 /**
4665  * i40e_resume_port_tx - Resume port Tx
4666  * @pf: PF struct
4667  *
4668  * Resume a port's Tx and issue a PF reset in case of failure to
4669  * resume.
4670  **/
4671 static int i40e_resume_port_tx(struct i40e_pf *pf)
4672 {
4673         struct i40e_hw *hw = &pf->hw;
4674         int ret;
4675
4676         ret = i40e_aq_resume_port_tx(hw, NULL);
4677         if (ret) {
4678                 dev_info(&pf->pdev->dev,
4679                          "Resume Port Tx failed, err %s aq_err %s\n",
4680                           i40e_stat_str(&pf->hw, ret),
4681                           i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4682                 /* Schedule PF reset to recover */
4683                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
4684                 i40e_service_event_schedule(pf);
4685         }
4686
4687         return ret;
4688 }
4689
4690 /**
4691  * i40e_init_pf_dcb - Initialize DCB configuration
4692  * @pf: PF being configured
4693  *
4694  * Query the current DCB configuration and cache it
4695  * in the hardware structure
4696  **/
4697 static int i40e_init_pf_dcb(struct i40e_pf *pf)
4698 {
4699         struct i40e_hw *hw = &pf->hw;
4700         int err = 0;
4701
4702         /* Do not enable DCB for SW1 and SW2 images even if the FW is capable */
4703         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
4704             (pf->hw.aq.fw_maj_ver < 4))
4705                 goto out;
4706
4707         /* Get the initial DCB configuration */
4708         err = i40e_init_dcb(hw);
4709         if (!err) {
4710                 /* Device/Function is not DCBX capable */
4711                 if ((!hw->func_caps.dcb) ||
4712                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
4713                         dev_info(&pf->pdev->dev,
4714                                  "DCBX offload is not supported or is disabled for this PF.\n");
4715
4716                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
4717                                 goto out;
4718
4719                 } else {
4720                         /* When status is not DISABLED then DCBX in FW */
4721                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
4722                                        DCB_CAP_DCBX_VER_IEEE;
4723
4724                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
4725                         /* Enable DCB tagging only when more than one TC */
4726                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
4727                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
4728                         dev_dbg(&pf->pdev->dev,
4729                                 "DCBX offload is supported for this PF.\n");
4730                 }
4731         } else {
4732                 dev_info(&pf->pdev->dev,
4733                          "Query for DCB configuration failed, err %s aq_err %s\n",
4734                          i40e_stat_str(&pf->hw, err),
4735                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4736         }
4737
4738 out:
4739         return err;
4740 }
4741 #endif /* CONFIG_I40E_DCB */
4742 #define SPEED_SIZE 14
4743 #define FC_SIZE 8
4744 /**
4745  * i40e_print_link_message - print link up or down
4746  * @vsi: the VSI for which link needs a message
4747  */
4748 static void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
4749 {
4750         char speed[SPEED_SIZE] = "Unknown";
4751         char fc[FC_SIZE] = "RX/TX";
4752
4753         if (!isup) {
4754                 netdev_info(vsi->netdev, "NIC Link is Down\n");
4755                 return;
4756         }
4757
4758         /* Warn user if link speed on NPAR enabled partition is not at
4759          * least 10GB
4760          */
4761         if (vsi->back->hw.func_caps.npar_enable &&
4762             (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
4763              vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
4764                 netdev_warn(vsi->netdev,
4765                             "The partition detected link speed that is less than 10Gbps\n");
4766
4767         switch (vsi->back->hw.phy.link_info.link_speed) {
4768         case I40E_LINK_SPEED_40GB:
4769                 strlcpy(speed, "40 Gbps", SPEED_SIZE);
4770                 break;
4771         case I40E_LINK_SPEED_20GB:
4772                 strncpy(speed, "20 Gbps", SPEED_SIZE);
4773                 break;
4774         case I40E_LINK_SPEED_10GB:
4775                 strlcpy(speed, "10 Gbps", SPEED_SIZE);
4776                 break;
4777         case I40E_LINK_SPEED_1GB:
4778                 strlcpy(speed, "1000 Mbps", SPEED_SIZE);
4779                 break;
4780         case I40E_LINK_SPEED_100MB:
4781                 strncpy(speed, "100 Mbps", SPEED_SIZE);
4782                 break;
4783         default:
4784                 break;
4785         }
4786
4787         switch (vsi->back->hw.fc.current_mode) {
4788         case I40E_FC_FULL:
4789                 strlcpy(fc, "RX/TX", FC_SIZE);
4790                 break;
4791         case I40E_FC_TX_PAUSE:
4792                 strlcpy(fc, "TX", FC_SIZE);
4793                 break;
4794         case I40E_FC_RX_PAUSE:
4795                 strlcpy(fc, "RX", FC_SIZE);
4796                 break;
4797         default:
4798                 strlcpy(fc, "None", FC_SIZE);
4799                 break;
4800         }
4801
4802         netdev_info(vsi->netdev, "NIC Link is Up %s Full Duplex, Flow Control: %s\n",
4803                     speed, fc);
4804 }
4805
4806 /**
4807  * i40e_up_complete - Finish the last steps of bringing up a connection
4808  * @vsi: the VSI being configured
4809  **/
4810 static int i40e_up_complete(struct i40e_vsi *vsi)
4811 {
4812         struct i40e_pf *pf = vsi->back;
4813         int err;
4814
4815         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4816                 i40e_vsi_configure_msix(vsi);
4817         else
4818                 i40e_configure_msi_and_legacy(vsi);
4819
4820         /* start rings */
4821         err = i40e_vsi_control_rings(vsi, true);
4822         if (err)
4823                 return err;
4824
4825         clear_bit(__I40E_DOWN, &vsi->state);
4826         i40e_napi_enable_all(vsi);
4827         i40e_vsi_enable_irq(vsi);
4828
4829         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
4830             (vsi->netdev)) {
4831                 i40e_print_link_message(vsi, true);
4832                 netif_tx_start_all_queues(vsi->netdev);
4833                 netif_carrier_on(vsi->netdev);
4834         } else if (vsi->netdev) {
4835                 i40e_print_link_message(vsi, false);
4836                 /* need to check for qualified module here*/
4837                 if ((pf->hw.phy.link_info.link_info &
4838                         I40E_AQ_MEDIA_AVAILABLE) &&
4839                     (!(pf->hw.phy.link_info.an_info &
4840                         I40E_AQ_QUALIFIED_MODULE)))
4841                         netdev_err(vsi->netdev,
4842                                    "the driver failed to link because an unqualified module was detected.");
4843         }
4844
4845         /* replay FDIR SB filters */
4846         if (vsi->type == I40E_VSI_FDIR) {
4847                 /* reset fd counters */
4848                 pf->fd_add_err = pf->fd_atr_cnt = 0;
4849                 if (pf->fd_tcp_rule > 0) {
4850                         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
4851                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
4852                                 dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
4853                         pf->fd_tcp_rule = 0;
4854                 }
4855                 i40e_fdir_filter_restore(vsi);
4856         }
4857         i40e_service_event_schedule(pf);
4858
4859         return 0;
4860 }
4861
4862 /**
4863  * i40e_vsi_reinit_locked - Reset the VSI
4864  * @vsi: the VSI being configured
4865  *
4866  * Rebuild the ring structs after some configuration
4867  * has changed, e.g. MTU size.
4868  **/
4869 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
4870 {
4871         struct i40e_pf *pf = vsi->back;
4872
4873         WARN_ON(in_interrupt());
4874         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
4875                 usleep_range(1000, 2000);
4876         i40e_down(vsi);
4877
4878         /* Give a VF some time to respond to the reset.  The
4879          * two second wait is based upon the watchdog cycle in
4880          * the VF driver.
4881          */
4882         if (vsi->type == I40E_VSI_SRIOV)
4883                 msleep(2000);
4884         i40e_up(vsi);
4885         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
4886 }
4887
4888 /**
4889  * i40e_up - Bring the connection back up after being down
4890  * @vsi: the VSI being configured
4891  **/
4892 int i40e_up(struct i40e_vsi *vsi)
4893 {
4894         int err;
4895
4896         err = i40e_vsi_configure(vsi);
4897         if (!err)
4898                 err = i40e_up_complete(vsi);
4899
4900         return err;
4901 }
4902
4903 /**
4904  * i40e_down - Shutdown the connection processing
4905  * @vsi: the VSI being stopped
4906  **/
4907 void i40e_down(struct i40e_vsi *vsi)
4908 {
4909         int i;
4910
4911         /* It is assumed that the caller of this function
4912          * sets the vsi->state __I40E_DOWN bit.
4913          */
4914         if (vsi->netdev) {
4915                 netif_carrier_off(vsi->netdev);
4916                 netif_tx_disable(vsi->netdev);
4917         }
4918         i40e_vsi_disable_irq(vsi);
4919         i40e_vsi_control_rings(vsi, false);
4920         i40e_napi_disable_all(vsi);
4921
4922         for (i = 0; i < vsi->num_queue_pairs; i++) {
4923                 i40e_clean_tx_ring(vsi->tx_rings[i]);
4924                 i40e_clean_rx_ring(vsi->rx_rings[i]);
4925         }
4926 }
4927
4928 /**
4929  * i40e_setup_tc - configure multiple traffic classes
4930  * @netdev: net device to configure
4931  * @tc: number of traffic classes to enable
4932  **/
4933 #ifdef I40E_FCOE
4934 int i40e_setup_tc(struct net_device *netdev, u8 tc)
4935 #else
4936 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
4937 #endif
4938 {
4939         struct i40e_netdev_priv *np = netdev_priv(netdev);
4940         struct i40e_vsi *vsi = np->vsi;
4941         struct i40e_pf *pf = vsi->back;
4942         u8 enabled_tc = 0;
4943         int ret = -EINVAL;
4944         int i;
4945
4946         /* Check if DCB enabled to continue */
4947         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
4948                 netdev_info(netdev, "DCB is not enabled for adapter\n");
4949                 goto exit;
4950         }
4951
4952         /* Check if MFP enabled */
4953         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
4954                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
4955                 goto exit;
4956         }
4957
4958         /* Check whether tc count is within enabled limit */
4959         if (tc > i40e_pf_get_num_tc(pf)) {
4960                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
4961                 goto exit;
4962         }
4963
4964         /* Generate TC map for number of tc requested */
4965         for (i = 0; i < tc; i++)
4966                 enabled_tc |= BIT_ULL(i);
4967
4968         /* Requesting same TC configuration as already enabled */
4969         if (enabled_tc == vsi->tc_config.enabled_tc)
4970                 return 0;
4971
4972         /* Quiesce VSI queues */
4973         i40e_quiesce_vsi(vsi);
4974
4975         /* Configure VSI for enabled TCs */
4976         ret = i40e_vsi_config_tc(vsi, enabled_tc);
4977         if (ret) {
4978                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
4979                             vsi->seid);
4980                 goto exit;
4981         }
4982
4983         /* Unquiesce VSI */
4984         i40e_unquiesce_vsi(vsi);
4985
4986 exit:
4987         return ret;
4988 }
4989
4990 /**
4991  * i40e_open - Called when a network interface is made active
4992  * @netdev: network interface device structure
4993  *
4994  * The open entry point is called when a network interface is made
4995  * active by the system (IFF_UP).  At this point all resources needed
4996  * for transmit and receive operations are allocated, the interrupt
4997  * handler is registered with the OS, the netdev watchdog subtask is
4998  * enabled, and the stack is notified that the interface is ready.
4999  *
5000  * Returns 0 on success, negative value on failure
5001  **/
5002 int i40e_open(struct net_device *netdev)
5003 {
5004         struct i40e_netdev_priv *np = netdev_priv(netdev);
5005         struct i40e_vsi *vsi = np->vsi;
5006         struct i40e_pf *pf = vsi->back;
5007         int err;
5008
5009         /* disallow open during test or if eeprom is broken */
5010         if (test_bit(__I40E_TESTING, &pf->state) ||
5011             test_bit(__I40E_BAD_EEPROM, &pf->state))
5012                 return -EBUSY;
5013
5014         netif_carrier_off(netdev);
5015
5016         err = i40e_vsi_open(vsi);
5017         if (err)
5018                 return err;
5019
5020         /* configure global TSO hardware offload settings */
5021         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
5022                                                        TCP_FLAG_FIN) >> 16);
5023         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
5024                                                        TCP_FLAG_FIN |
5025                                                        TCP_FLAG_CWR) >> 16);
5026         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
5027
5028 #ifdef CONFIG_I40E_VXLAN
5029         vxlan_get_rx_port(netdev);
5030 #endif
5031
5032         return 0;
5033 }
5034
5035 /**
5036  * i40e_vsi_open -
5037  * @vsi: the VSI to open
5038  *
5039  * Finish initialization of the VSI.
5040  *
5041  * Returns 0 on success, negative value on failure
5042  **/
5043 int i40e_vsi_open(struct i40e_vsi *vsi)
5044 {
5045         struct i40e_pf *pf = vsi->back;
5046         char int_name[I40E_INT_NAME_STR_LEN];
5047         int err;
5048
5049         /* allocate descriptors */
5050         err = i40e_vsi_setup_tx_resources(vsi);
5051         if (err)
5052                 goto err_setup_tx;
5053         err = i40e_vsi_setup_rx_resources(vsi);
5054         if (err)
5055                 goto err_setup_rx;
5056
5057         err = i40e_vsi_configure(vsi);
5058         if (err)
5059                 goto err_setup_rx;
5060
5061         if (vsi->netdev) {
5062                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
5063                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
5064                 err = i40e_vsi_request_irq(vsi, int_name);
5065                 if (err)
5066                         goto err_setup_rx;
5067
5068                 /* Notify the stack of the actual queue counts. */
5069                 err = netif_set_real_num_tx_queues(vsi->netdev,
5070                                                    vsi->num_queue_pairs);
5071                 if (err)
5072                         goto err_set_queues;
5073
5074                 err = netif_set_real_num_rx_queues(vsi->netdev,
5075                                                    vsi->num_queue_pairs);
5076                 if (err)
5077                         goto err_set_queues;
5078
5079         } else if (vsi->type == I40E_VSI_FDIR) {
5080                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
5081                          dev_driver_string(&pf->pdev->dev),
5082                          dev_name(&pf->pdev->dev));
5083                 err = i40e_vsi_request_irq(vsi, int_name);
5084
5085         } else {
5086                 err = -EINVAL;
5087                 goto err_setup_rx;
5088         }
5089
5090         err = i40e_up_complete(vsi);
5091         if (err)
5092                 goto err_up_complete;
5093
5094         return 0;
5095
5096 err_up_complete:
5097         i40e_down(vsi);
5098 err_set_queues:
5099         i40e_vsi_free_irq(vsi);
5100 err_setup_rx:
5101         i40e_vsi_free_rx_resources(vsi);
5102 err_setup_tx:
5103         i40e_vsi_free_tx_resources(vsi);
5104         if (vsi == pf->vsi[pf->lan_vsi])
5105                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
5106
5107         return err;
5108 }
5109
5110 /**
5111  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
5112  * @pf: Pointer to PF
5113  *
5114  * This function destroys the hlist where all the Flow Director
5115  * filters were saved.
5116  **/
5117 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
5118 {
5119         struct i40e_fdir_filter *filter;
5120         struct hlist_node *node2;
5121
5122         hlist_for_each_entry_safe(filter, node2,
5123                                   &pf->fdir_filter_list, fdir_node) {
5124                 hlist_del(&filter->fdir_node);
5125                 kfree(filter);
5126         }
5127         pf->fdir_pf_active_filters = 0;
5128 }
5129
5130 /**
5131  * i40e_close - Disables a network interface
5132  * @netdev: network interface device structure
5133  *
5134  * The close entry point is called when an interface is de-activated
5135  * by the OS.  The hardware is still under the driver's control, but
5136  * this netdev interface is disabled.
5137  *
5138  * Returns 0, this is not allowed to fail
5139  **/
5140 #ifdef I40E_FCOE
5141 int i40e_close(struct net_device *netdev)
5142 #else
5143 static int i40e_close(struct net_device *netdev)
5144 #endif
5145 {
5146         struct i40e_netdev_priv *np = netdev_priv(netdev);
5147         struct i40e_vsi *vsi = np->vsi;
5148
5149         i40e_vsi_close(vsi);
5150
5151         return 0;
5152 }
5153
5154 /**
5155  * i40e_do_reset - Start a PF or Core Reset sequence
5156  * @pf: board private structure
5157  * @reset_flags: which reset is requested
5158  *
5159  * The essential difference in resets is that the PF Reset
5160  * doesn't clear the packet buffers, doesn't reset the PE
5161  * firmware, and doesn't bother the other PFs on the chip.
5162  **/
5163 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
5164 {
5165         u32 val;
5166
5167         WARN_ON(in_interrupt());
5168
5169         if (i40e_check_asq_alive(&pf->hw))
5170                 i40e_vc_notify_reset(pf);
5171
5172         /* do the biggest reset indicated */
5173         if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {
5174
5175                 /* Request a Global Reset
5176                  *
5177                  * This will start the chip's countdown to the actual full
5178                  * chip reset event, and a warning interrupt to be sent
5179                  * to all PFs, including the requestor.  Our handler
5180                  * for the warning interrupt will deal with the shutdown
5181                  * and recovery of the switch setup.
5182                  */
5183                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
5184                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5185                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
5186                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5187
5188         } else if (reset_flags & BIT_ULL(__I40E_CORE_RESET_REQUESTED)) {
5189
5190                 /* Request a Core Reset
5191                  *
5192                  * Same as Global Reset, except does *not* include the MAC/PHY
5193                  */
5194                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
5195                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5196                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
5197                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5198                 i40e_flush(&pf->hw);
5199
5200         } else if (reset_flags & BIT_ULL(__I40E_PF_RESET_REQUESTED)) {
5201
5202                 /* Request a PF Reset
5203                  *
5204                  * Resets only the PF-specific registers
5205                  *
5206                  * This goes directly to the tear-down and rebuild of
5207                  * the switch, since we need to do all the recovery as
5208                  * for the Core Reset.
5209                  */
5210                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5211                 i40e_handle_reset_warning(pf);
5212
5213         } else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) {
5214                 int v;
5215
5216                 /* Find the VSI(s) that requested a re-init */
5217                 dev_info(&pf->pdev->dev,
5218                          "VSI reinit requested\n");
5219                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5220                         struct i40e_vsi *vsi = pf->vsi[v];
5221                         if (vsi != NULL &&
5222                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5223                                 i40e_vsi_reinit_locked(pf->vsi[v]);
5224                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5225                         }
5226                 }
5227
5228                 /* no further action needed, so return now */
5229                 return;
5230         } else if (reset_flags & BIT_ULL(__I40E_DOWN_REQUESTED)) {
5231                 int v;
5232
5233                 /* Find the VSI(s) that needs to be brought down */
5234                 dev_info(&pf->pdev->dev, "VSI down requested\n");
5235                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5236                         struct i40e_vsi *vsi = pf->vsi[v];
5237                         if (vsi != NULL &&
5238                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5239                                 set_bit(__I40E_DOWN, &vsi->state);
5240                                 i40e_down(vsi);
5241                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5242                         }
5243                 }
5244
5245                 /* no further action needed, so return now */
5246                 return;
5247         } else {
5248                 dev_info(&pf->pdev->dev,
5249                          "bad reset request 0x%08x\n", reset_flags);
5250                 return;
5251         }
5252 }
5253
5254 #ifdef CONFIG_I40E_DCB
5255 /**
5256  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
5257  * @pf: board private structure
5258  * @old_cfg: current DCB config
5259  * @new_cfg: new DCB config
5260  **/
5261 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
5262                             struct i40e_dcbx_config *old_cfg,
5263                             struct i40e_dcbx_config *new_cfg)
5264 {
5265         bool need_reconfig = false;
5266
5267         /* Check if ETS configuration has changed */
5268         if (memcmp(&new_cfg->etscfg,
5269                    &old_cfg->etscfg,
5270                    sizeof(new_cfg->etscfg))) {
5271                 /* If Priority Table has changed reconfig is needed */
5272                 if (memcmp(&new_cfg->etscfg.prioritytable,
5273                            &old_cfg->etscfg.prioritytable,
5274                            sizeof(new_cfg->etscfg.prioritytable))) {
5275                         need_reconfig = true;
5276                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
5277                 }
5278
5279                 if (memcmp(&new_cfg->etscfg.tcbwtable,
5280                            &old_cfg->etscfg.tcbwtable,
5281                            sizeof(new_cfg->etscfg.tcbwtable)))
5282                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5283
5284                 if (memcmp(&new_cfg->etscfg.tsatable,
5285                            &old_cfg->etscfg.tsatable,
5286                            sizeof(new_cfg->etscfg.tsatable)))
5287                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5288         }
5289
5290         /* Check if PFC configuration has changed */
5291         if (memcmp(&new_cfg->pfc,
5292                    &old_cfg->pfc,
5293                    sizeof(new_cfg->pfc))) {
5294                 need_reconfig = true;
5295                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5296         }
5297
5298         /* Check if APP Table has changed */
5299         if (memcmp(&new_cfg->app,
5300                    &old_cfg->app,
5301                    sizeof(new_cfg->app))) {
5302                 need_reconfig = true;
5303                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5304         }
5305
5306         dev_dbg(&pf->pdev->dev, "%s: need_reconfig=%d\n", __func__,
5307                 need_reconfig);
5308         return need_reconfig;
5309 }
5310
5311 /**
5312  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5313  * @pf: board private structure
5314  * @e: event info posted on ARQ
5315  **/
5316 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5317                                   struct i40e_arq_event_info *e)
5318 {
5319         struct i40e_aqc_lldp_get_mib *mib =
5320                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5321         struct i40e_hw *hw = &pf->hw;
5322         struct i40e_dcbx_config tmp_dcbx_cfg;
5323         bool need_reconfig = false;
5324         int ret = 0;
5325         u8 type;
5326
5327         /* Not DCB capable or capability disabled */
5328         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5329                 return ret;
5330
5331         /* Ignore if event is not for Nearest Bridge */
5332         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5333                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5334         dev_dbg(&pf->pdev->dev,
5335                 "%s: LLDP event mib bridge type 0x%x\n", __func__, type);
5336         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5337                 return ret;
5338
5339         /* Check MIB Type and return if event for Remote MIB update */
5340         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5341         dev_dbg(&pf->pdev->dev,
5342                 "%s: LLDP event mib type %s\n", __func__,
5343                 type ? "remote" : "local");
5344         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5345                 /* Update the remote cached instance and return */
5346                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5347                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5348                                 &hw->remote_dcbx_config);
5349                 goto exit;
5350         }
5351
5352         /* Store the old configuration */
5353         tmp_dcbx_cfg = hw->local_dcbx_config;
5354
5355         /* Reset the old DCBx configuration data */
5356         memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
5357         /* Get updated DCBX data from firmware */
5358         ret = i40e_get_dcb_config(&pf->hw);
5359         if (ret) {
5360                 dev_info(&pf->pdev->dev,
5361                          "Failed querying DCB configuration data from firmware, err %s aq_err %s\n",
5362                          i40e_stat_str(&pf->hw, ret),
5363                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5364                 goto exit;
5365         }
5366
5367         /* No change detected in DCBX configs */
5368         if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
5369                     sizeof(tmp_dcbx_cfg))) {
5370                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5371                 goto exit;
5372         }
5373
5374         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
5375                                                &hw->local_dcbx_config);
5376
5377         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
5378
5379         if (!need_reconfig)
5380                 goto exit;
5381
5382         /* Enable DCB tagging only when more than one TC */
5383         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5384                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5385         else
5386                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5387
5388         set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5389         /* Reconfiguration needed quiesce all VSIs */
5390         i40e_pf_quiesce_all_vsi(pf);
5391
5392         /* Changes in configuration update VEB/VSI */
5393         i40e_dcb_reconfigure(pf);
5394
5395         ret = i40e_resume_port_tx(pf);
5396
5397         clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5398         /* In case of error no point in resuming VSIs */
5399         if (ret)
5400                 goto exit;
5401
5402         /* Wait for the PF's Tx queues to be disabled */
5403         ret = i40e_pf_wait_txq_disabled(pf);
5404         if (ret) {
5405                 /* Schedule PF reset to recover */
5406                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5407                 i40e_service_event_schedule(pf);
5408         } else {
5409                 i40e_pf_unquiesce_all_vsi(pf);
5410         }
5411
5412 exit:
5413         return ret;
5414 }
5415 #endif /* CONFIG_I40E_DCB */
5416
5417 /**
5418  * i40e_do_reset_safe - Protected reset path for userland calls.
5419  * @pf: board private structure
5420  * @reset_flags: which reset is requested
5421  *
5422  **/
5423 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5424 {
5425         rtnl_lock();
5426         i40e_do_reset(pf, reset_flags);
5427         rtnl_unlock();
5428 }
5429
5430 /**
5431  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5432  * @pf: board private structure
5433  * @e: event info posted on ARQ
5434  *
5435  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5436  * and VF queues
5437  **/
5438 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5439                                            struct i40e_arq_event_info *e)
5440 {
5441         struct i40e_aqc_lan_overflow *data =
5442                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5443         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5444         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5445         struct i40e_hw *hw = &pf->hw;
5446         struct i40e_vf *vf;
5447         u16 vf_id;
5448
5449         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5450                 queue, qtx_ctl);
5451
5452         /* Queue belongs to VF, find the VF and issue VF reset */
5453         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5454             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5455                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5456                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5457                 vf_id -= hw->func_caps.vf_base_id;
5458                 vf = &pf->vf[vf_id];
5459                 i40e_vc_notify_vf_reset(vf);
5460                 /* Allow VF to process pending reset notification */
5461                 msleep(20);
5462                 i40e_reset_vf(vf, false);
5463         }
5464 }
5465
5466 /**
5467  * i40e_service_event_complete - Finish up the service event
5468  * @pf: board private structure
5469  **/
5470 static void i40e_service_event_complete(struct i40e_pf *pf)
5471 {
5472         BUG_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5473
5474         /* flush memory to make sure state is correct before next watchog */
5475         smp_mb__before_atomic();
5476         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5477 }
5478
5479 /**
5480  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5481  * @pf: board private structure
5482  **/
5483 u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5484 {
5485         u32 val, fcnt_prog;
5486
5487         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5488         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5489         return fcnt_prog;
5490 }
5491
5492 /**
5493  * i40e_get_current_fd_count - Get total FD filters programmed for this PF
5494  * @pf: board private structure
5495  **/
5496 u32 i40e_get_current_fd_count(struct i40e_pf *pf)
5497 {
5498         u32 val, fcnt_prog;
5499
5500         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5501         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5502                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5503                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5504         return fcnt_prog;
5505 }
5506
5507 /**
5508  * i40e_get_global_fd_count - Get total FD filters programmed on device
5509  * @pf: board private structure
5510  **/
5511 u32 i40e_get_global_fd_count(struct i40e_pf *pf)
5512 {
5513         u32 val, fcnt_prog;
5514
5515         val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
5516         fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
5517                     ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
5518                      I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
5519         return fcnt_prog;
5520 }
5521
5522 /**
5523  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5524  * @pf: board private structure
5525  **/
5526 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5527 {
5528         u32 fcnt_prog, fcnt_avail;
5529
5530         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5531                 return;
5532
5533         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5534          * to re-enable
5535          */
5536         fcnt_prog = i40e_get_global_fd_count(pf);
5537         fcnt_avail = pf->fdir_pf_filter_count;
5538         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5539             (pf->fd_add_err == 0) ||
5540             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5541                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5542                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5543                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5544                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5545                                 dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5546                 }
5547         }
5548         /* Wait for some more space to be available to turn on ATR */
5549         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5550                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5551                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5552                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5553                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5554                                 dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
5555                 }
5556         }
5557 }
5558
5559 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5560 #define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
5561 /**
5562  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5563  * @pf: board private structure
5564  **/
5565 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5566 {
5567         unsigned long min_flush_time;
5568         int flush_wait_retry = 50;
5569         bool disable_atr = false;
5570         int fd_room;
5571         int reg;
5572
5573         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5574                 return;
5575
5576         if (time_after(jiffies, pf->fd_flush_timestamp +
5577                                 (I40E_MIN_FD_FLUSH_INTERVAL * HZ))) {
5578                 /* If the flush is happening too quick and we have mostly
5579                  * SB rules we should not re-enable ATR for some time.
5580                  */
5581                 min_flush_time = pf->fd_flush_timestamp
5582                                 + (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
5583                 fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;
5584
5585                 if (!(time_after(jiffies, min_flush_time)) &&
5586                     (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
5587                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5588                                 dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
5589                         disable_atr = true;
5590                 }
5591
5592                 pf->fd_flush_timestamp = jiffies;
5593                 pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5594                 /* flush all filters */
5595                 wr32(&pf->hw, I40E_PFQF_CTL_1,
5596                      I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
5597                 i40e_flush(&pf->hw);
5598                 pf->fd_flush_cnt++;
5599                 pf->fd_add_err = 0;
5600                 do {
5601                         /* Check FD flush status every 5-6msec */
5602                         usleep_range(5000, 6000);
5603                         reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
5604                         if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
5605                                 break;
5606                 } while (flush_wait_retry--);
5607                 if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
5608                         dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
5609                 } else {
5610                         /* replay sideband filters */
5611                         i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
5612                         if (!disable_atr)
5613                                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
5614                         clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5615                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5616                                 dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
5617                 }
5618         }
5619 }
5620
5621 /**
5622  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
5623  * @pf: board private structure
5624  **/
5625 u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
5626 {
5627         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
5628 }
5629
5630 /* We can see up to 256 filter programming desc in transit if the filters are
5631  * being applied really fast; before we see the first
5632  * filter miss error on Rx queue 0. Accumulating enough error messages before
5633  * reacting will make sure we don't cause flush too often.
5634  */
5635 #define I40E_MAX_FD_PROGRAM_ERROR 256
5636
5637 /**
5638  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
5639  * @pf: board private structure
5640  **/
5641 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
5642 {
5643
5644         /* if interface is down do nothing */
5645         if (test_bit(__I40E_DOWN, &pf->state))
5646                 return;
5647
5648         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5649                 return;
5650
5651         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5652                 i40e_fdir_flush_and_replay(pf);
5653
5654         i40e_fdir_check_and_reenable(pf);
5655
5656 }
5657
5658 /**
5659  * i40e_vsi_link_event - notify VSI of a link event
5660  * @vsi: vsi to be notified
5661  * @link_up: link up or down
5662  **/
5663 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
5664 {
5665         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
5666                 return;
5667
5668         switch (vsi->type) {
5669         case I40E_VSI_MAIN:
5670 #ifdef I40E_FCOE
5671         case I40E_VSI_FCOE:
5672 #endif
5673                 if (!vsi->netdev || !vsi->netdev_registered)
5674                         break;
5675
5676                 if (link_up) {
5677                         netif_carrier_on(vsi->netdev);
5678                         netif_tx_wake_all_queues(vsi->netdev);
5679                 } else {
5680                         netif_carrier_off(vsi->netdev);
5681                         netif_tx_stop_all_queues(vsi->netdev);
5682                 }
5683                 break;
5684
5685         case I40E_VSI_SRIOV:
5686         case I40E_VSI_VMDQ2:
5687         case I40E_VSI_CTRL:
5688         case I40E_VSI_MIRROR:
5689         default:
5690                 /* there is no notification for other VSIs */
5691                 break;
5692         }
5693 }
5694
5695 /**
5696  * i40e_veb_link_event - notify elements on the veb of a link event
5697  * @veb: veb to be notified
5698  * @link_up: link up or down
5699  **/
5700 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
5701 {
5702         struct i40e_pf *pf;
5703         int i;
5704
5705         if (!veb || !veb->pf)
5706                 return;
5707         pf = veb->pf;
5708
5709         /* depth first... */
5710         for (i = 0; i < I40E_MAX_VEB; i++)
5711                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
5712                         i40e_veb_link_event(pf->veb[i], link_up);
5713
5714         /* ... now the local VSIs */
5715         for (i = 0; i < pf->num_alloc_vsi; i++)
5716                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
5717                         i40e_vsi_link_event(pf->vsi[i], link_up);
5718 }
5719
5720 /**
5721  * i40e_link_event - Update netif_carrier status
5722  * @pf: board private structure
5723  **/
5724 static void i40e_link_event(struct i40e_pf *pf)
5725 {
5726         bool new_link, old_link;
5727         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
5728         u8 new_link_speed, old_link_speed;
5729
5730         /* set this to force the get_link_status call to refresh state */
5731         pf->hw.phy.get_link_info = true;
5732
5733         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
5734         new_link = i40e_get_link_status(&pf->hw);
5735         old_link_speed = pf->hw.phy.link_info_old.link_speed;
5736         new_link_speed = pf->hw.phy.link_info.link_speed;
5737
5738         if (new_link == old_link &&
5739             new_link_speed == old_link_speed &&
5740             (test_bit(__I40E_DOWN, &vsi->state) ||
5741              new_link == netif_carrier_ok(vsi->netdev)))
5742                 return;
5743
5744         if (!test_bit(__I40E_DOWN, &vsi->state))
5745                 i40e_print_link_message(vsi, new_link);
5746
5747         /* Notify the base of the switch tree connected to
5748          * the link.  Floating VEBs are not notified.
5749          */
5750         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
5751                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
5752         else
5753                 i40e_vsi_link_event(vsi, new_link);
5754
5755         if (pf->vf)
5756                 i40e_vc_notify_link_state(pf);
5757
5758         if (pf->flags & I40E_FLAG_PTP)
5759                 i40e_ptp_set_increment(pf);
5760 }
5761
5762 /**
5763  * i40e_check_hang_subtask - Check for hung queues and dropped interrupts
5764  * @pf: board private structure
5765  *
5766  * Set the per-queue flags to request a check for stuck queues in the irq
5767  * clean functions, then force interrupts to be sure the irq clean is called.
5768  **/
5769 static void i40e_check_hang_subtask(struct i40e_pf *pf)
5770 {
5771         int i, v;
5772
5773         /* If we're down or resetting, just bail */
5774         if (test_bit(__I40E_DOWN, &pf->state) ||
5775             test_bit(__I40E_CONFIG_BUSY, &pf->state))
5776                 return;
5777
5778         /* for each VSI/netdev
5779          *     for each Tx queue
5780          *         set the check flag
5781          *     for each q_vector
5782          *         force an interrupt
5783          */
5784         for (v = 0; v < pf->num_alloc_vsi; v++) {
5785                 struct i40e_vsi *vsi = pf->vsi[v];
5786                 int armed = 0;
5787
5788                 if (!pf->vsi[v] ||
5789                     test_bit(__I40E_DOWN, &vsi->state) ||
5790                     (vsi->netdev && !netif_carrier_ok(vsi->netdev)))
5791                         continue;
5792
5793                 for (i = 0; i < vsi->num_queue_pairs; i++) {
5794                         set_check_for_tx_hang(vsi->tx_rings[i]);
5795                         if (test_bit(__I40E_HANG_CHECK_ARMED,
5796                                      &vsi->tx_rings[i]->state))
5797                                 armed++;
5798                 }
5799
5800                 if (armed) {
5801                         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
5802                                 wr32(&vsi->back->hw, I40E_PFINT_DYN_CTL0,
5803                                      (I40E_PFINT_DYN_CTL0_INTENA_MASK |
5804                                       I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK |
5805                                       I40E_PFINT_DYN_CTL0_ITR_INDX_MASK |
5806                                       I40E_PFINT_DYN_CTL0_SW_ITR_INDX_ENA_MASK |
5807                                       I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK));
5808                         } else {
5809                                 u16 vec = vsi->base_vector - 1;
5810                                 u32 val = (I40E_PFINT_DYN_CTLN_INTENA_MASK |
5811                                       I40E_PFINT_DYN_CTLN_SWINT_TRIG_MASK |
5812                                       I40E_PFINT_DYN_CTLN_ITR_INDX_MASK |
5813                                       I40E_PFINT_DYN_CTLN_SW_ITR_INDX_ENA_MASK |
5814                                       I40E_PFINT_DYN_CTLN_SW_ITR_INDX_MASK);
5815                                 for (i = 0; i < vsi->num_q_vectors; i++, vec++)
5816                                         wr32(&vsi->back->hw,
5817                                              I40E_PFINT_DYN_CTLN(vec), val);
5818                         }
5819                         i40e_flush(&vsi->back->hw);
5820                 }
5821         }
5822 }
5823
5824 /**
5825  * i40e_watchdog_subtask - periodic checks not using event driven response
5826  * @pf: board private structure
5827  **/
5828 static void i40e_watchdog_subtask(struct i40e_pf *pf)
5829 {
5830         int i;
5831
5832         /* if interface is down do nothing */
5833         if (test_bit(__I40E_DOWN, &pf->state) ||
5834             test_bit(__I40E_CONFIG_BUSY, &pf->state))
5835                 return;
5836
5837         /* make sure we don't do these things too often */
5838         if (time_before(jiffies, (pf->service_timer_previous +
5839                                   pf->service_timer_period)))
5840                 return;
5841         pf->service_timer_previous = jiffies;
5842
5843         i40e_check_hang_subtask(pf);
5844         i40e_link_event(pf);
5845
5846         /* Update the stats for active netdevs so the network stack
5847          * can look at updated numbers whenever it cares to
5848          */
5849         for (i = 0; i < pf->num_alloc_vsi; i++)
5850                 if (pf->vsi[i] && pf->vsi[i]->netdev)
5851                         i40e_update_stats(pf->vsi[i]);
5852
5853         /* Update the stats for the active switching components */
5854         for (i = 0; i < I40E_MAX_VEB; i++)
5855                 if (pf->veb[i])
5856                         i40e_update_veb_stats(pf->veb[i]);
5857
5858         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
5859 }
5860
5861 /**
5862  * i40e_reset_subtask - Set up for resetting the device and driver
5863  * @pf: board private structure
5864  **/
5865 static void i40e_reset_subtask(struct i40e_pf *pf)
5866 {
5867         u32 reset_flags = 0;
5868
5869         rtnl_lock();
5870         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
5871                 reset_flags |= BIT_ULL(__I40E_REINIT_REQUESTED);
5872                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
5873         }
5874         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
5875                 reset_flags |= BIT_ULL(__I40E_PF_RESET_REQUESTED);
5876                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5877         }
5878         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
5879                 reset_flags |= BIT_ULL(__I40E_CORE_RESET_REQUESTED);
5880                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
5881         }
5882         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
5883                 reset_flags |= BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED);
5884                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
5885         }
5886         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
5887                 reset_flags |= BIT_ULL(__I40E_DOWN_REQUESTED);
5888                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
5889         }
5890
5891         /* If there's a recovery already waiting, it takes
5892          * precedence before starting a new reset sequence.
5893          */
5894         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
5895                 i40e_handle_reset_warning(pf);
5896                 goto unlock;
5897         }
5898
5899         /* If we're already down or resetting, just bail */
5900         if (reset_flags &&
5901             !test_bit(__I40E_DOWN, &pf->state) &&
5902             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
5903                 i40e_do_reset(pf, reset_flags);
5904
5905 unlock:
5906         rtnl_unlock();
5907 }
5908
5909 /**
5910  * i40e_handle_link_event - Handle link event
5911  * @pf: board private structure
5912  * @e: event info posted on ARQ
5913  **/
5914 static void i40e_handle_link_event(struct i40e_pf *pf,
5915                                    struct i40e_arq_event_info *e)
5916 {
5917         struct i40e_hw *hw = &pf->hw;
5918         struct i40e_aqc_get_link_status *status =
5919                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
5920
5921         /* save off old link status information */
5922         hw->phy.link_info_old = hw->phy.link_info;
5923
5924         /* Do a new status request to re-enable LSE reporting
5925          * and load new status information into the hw struct
5926          * This completely ignores any state information
5927          * in the ARQ event info, instead choosing to always
5928          * issue the AQ update link status command.
5929          */
5930         i40e_link_event(pf);
5931
5932         /* check for unqualified module, if link is down */
5933         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
5934             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
5935             (!(status->link_info & I40E_AQ_LINK_UP)))
5936                 dev_err(&pf->pdev->dev,
5937                         "The driver failed to link because an unqualified module was detected.\n");
5938 }
5939
5940 /**
5941  * i40e_clean_adminq_subtask - Clean the AdminQ rings
5942  * @pf: board private structure
5943  **/
5944 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
5945 {
5946         struct i40e_arq_event_info event;
5947         struct i40e_hw *hw = &pf->hw;
5948         u16 pending, i = 0;
5949         i40e_status ret;
5950         u16 opcode;
5951         u32 oldval;
5952         u32 val;
5953
5954         /* Do not run clean AQ when PF reset fails */
5955         if (test_bit(__I40E_RESET_FAILED, &pf->state))
5956                 return;
5957
5958         /* check for error indications */
5959         val = rd32(&pf->hw, pf->hw.aq.arq.len);
5960         oldval = val;
5961         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
5962                 dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
5963                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
5964         }
5965         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
5966                 dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
5967                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
5968         }
5969         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
5970                 dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
5971                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
5972         }
5973         if (oldval != val)
5974                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
5975
5976         val = rd32(&pf->hw, pf->hw.aq.asq.len);
5977         oldval = val;
5978         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
5979                 dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
5980                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
5981         }
5982         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
5983                 dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
5984                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
5985         }
5986         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
5987                 dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
5988                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
5989         }
5990         if (oldval != val)
5991                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
5992
5993         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
5994         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
5995         if (!event.msg_buf)
5996                 return;
5997
5998         do {
5999                 ret = i40e_clean_arq_element(hw, &event, &pending);
6000                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
6001                         break;
6002                 else if (ret) {
6003                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
6004                         break;
6005                 }
6006
6007                 opcode = le16_to_cpu(event.desc.opcode);
6008                 switch (opcode) {
6009
6010                 case i40e_aqc_opc_get_link_status:
6011                         i40e_handle_link_event(pf, &event);
6012                         break;
6013                 case i40e_aqc_opc_send_msg_to_pf:
6014                         ret = i40e_vc_process_vf_msg(pf,
6015                                         le16_to_cpu(event.desc.retval),
6016                                         le32_to_cpu(event.desc.cookie_high),
6017                                         le32_to_cpu(event.desc.cookie_low),
6018                                         event.msg_buf,
6019                                         event.msg_len);
6020                         break;
6021                 case i40e_aqc_opc_lldp_update_mib:
6022                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
6023 #ifdef CONFIG_I40E_DCB
6024                         rtnl_lock();
6025                         ret = i40e_handle_lldp_event(pf, &event);
6026                         rtnl_unlock();
6027 #endif /* CONFIG_I40E_DCB */
6028                         break;
6029                 case i40e_aqc_opc_event_lan_overflow:
6030                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
6031                         i40e_handle_lan_overflow_event(pf, &event);
6032                         break;
6033                 case i40e_aqc_opc_send_msg_to_peer:
6034                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
6035                         break;
6036                 case i40e_aqc_opc_nvm_erase:
6037                 case i40e_aqc_opc_nvm_update:
6038                         i40e_debug(&pf->hw, I40E_DEBUG_NVM, "ARQ NVM operation completed\n");
6039                         break;
6040                 default:
6041                         dev_info(&pf->pdev->dev,
6042                                  "ARQ Error: Unknown event 0x%04x received\n",
6043                                  opcode);
6044                         break;
6045                 }
6046         } while (pending && (i++ < pf->adminq_work_limit));
6047
6048         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
6049         /* re-enable Admin queue interrupt cause */
6050         val = rd32(hw, I40E_PFINT_ICR0_ENA);
6051         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
6052         wr32(hw, I40E_PFINT_ICR0_ENA, val);
6053         i40e_flush(hw);
6054
6055         kfree(event.msg_buf);
6056 }
6057
6058 /**
6059  * i40e_verify_eeprom - make sure eeprom is good to use
6060  * @pf: board private structure
6061  **/
6062 static void i40e_verify_eeprom(struct i40e_pf *pf)
6063 {
6064         int err;
6065
6066         err = i40e_diag_eeprom_test(&pf->hw);
6067         if (err) {
6068                 /* retry in case of garbage read */
6069                 err = i40e_diag_eeprom_test(&pf->hw);
6070                 if (err) {
6071                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
6072                                  err);
6073                         set_bit(__I40E_BAD_EEPROM, &pf->state);
6074                 }
6075         }
6076
6077         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
6078                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
6079                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
6080         }
6081 }
6082
6083 /**
6084  * i40e_enable_pf_switch_lb
6085  * @pf: pointer to the PF structure
6086  *
6087  * enable switch loop back or die - no point in a return value
6088  **/
6089 static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
6090 {
6091         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6092         struct i40e_vsi_context ctxt;
6093         int ret;
6094
6095         ctxt.seid = pf->main_vsi_seid;
6096         ctxt.pf_num = pf->hw.pf_id;
6097         ctxt.vf_num = 0;
6098         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6099         if (ret) {
6100                 dev_info(&pf->pdev->dev,
6101                          "couldn't get PF vsi config, err %s aq_err %s\n",
6102                          i40e_stat_str(&pf->hw, ret),
6103                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6104                 return;
6105         }
6106         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6107         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6108         ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6109
6110         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6111         if (ret) {
6112                 dev_info(&pf->pdev->dev,
6113                          "update vsi switch failed, err %s aq_err %s\n",
6114                          i40e_stat_str(&pf->hw, ret),
6115                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6116         }
6117 }
6118
6119 /**
6120  * i40e_disable_pf_switch_lb
6121  * @pf: pointer to the PF structure
6122  *
6123  * disable switch loop back or die - no point in a return value
6124  **/
6125 static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
6126 {
6127         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6128         struct i40e_vsi_context ctxt;
6129         int ret;
6130
6131         ctxt.seid = pf->main_vsi_seid;
6132         ctxt.pf_num = pf->hw.pf_id;
6133         ctxt.vf_num = 0;
6134         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6135         if (ret) {
6136                 dev_info(&pf->pdev->dev,
6137                          "couldn't get PF vsi config, err %s aq_err %s\n",
6138                          i40e_stat_str(&pf->hw, ret),
6139                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6140                 return;
6141         }
6142         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6143         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6144         ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6145
6146         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6147         if (ret) {
6148                 dev_info(&pf->pdev->dev,
6149                          "update vsi switch failed, err %s aq_err %s\n",
6150                          i40e_stat_str(&pf->hw, ret),
6151                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6152         }
6153 }
6154
6155 /**
6156  * i40e_config_bridge_mode - Configure the HW bridge mode
6157  * @veb: pointer to the bridge instance
6158  *
6159  * Configure the loop back mode for the LAN VSI that is downlink to the
6160  * specified HW bridge instance. It is expected this function is called
6161  * when a new HW bridge is instantiated.
6162  **/
6163 static void i40e_config_bridge_mode(struct i40e_veb *veb)
6164 {
6165         struct i40e_pf *pf = veb->pf;
6166
6167         dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
6168                  veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
6169         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
6170                 i40e_disable_pf_switch_lb(pf);
6171         else
6172                 i40e_enable_pf_switch_lb(pf);
6173 }
6174
6175 /**
6176  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
6177  * @veb: pointer to the VEB instance
6178  *
6179  * This is a recursive function that first builds the attached VSIs then
6180  * recurses in to build the next layer of VEB.  We track the connections
6181  * through our own index numbers because the seid's from the HW could
6182  * change across the reset.
6183  **/
6184 static int i40e_reconstitute_veb(struct i40e_veb *veb)
6185 {
6186         struct i40e_vsi *ctl_vsi = NULL;
6187         struct i40e_pf *pf = veb->pf;
6188         int v, veb_idx;
6189         int ret;
6190
6191         /* build VSI that owns this VEB, temporarily attached to base VEB */
6192         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
6193                 if (pf->vsi[v] &&
6194                     pf->vsi[v]->veb_idx == veb->idx &&
6195                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
6196                         ctl_vsi = pf->vsi[v];
6197                         break;
6198                 }
6199         }
6200         if (!ctl_vsi) {
6201                 dev_info(&pf->pdev->dev,
6202                          "missing owner VSI for veb_idx %d\n", veb->idx);
6203                 ret = -ENOENT;
6204                 goto end_reconstitute;
6205         }
6206         if (ctl_vsi != pf->vsi[pf->lan_vsi])
6207                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6208         ret = i40e_add_vsi(ctl_vsi);
6209         if (ret) {
6210                 dev_info(&pf->pdev->dev,
6211                          "rebuild of veb_idx %d owner VSI failed: %d\n",
6212                          veb->idx, ret);
6213                 goto end_reconstitute;
6214         }
6215         i40e_vsi_reset_stats(ctl_vsi);
6216
6217         /* create the VEB in the switch and move the VSI onto the VEB */
6218         ret = i40e_add_veb(veb, ctl_vsi);
6219         if (ret)
6220                 goto end_reconstitute;
6221
6222         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
6223                 veb->bridge_mode = BRIDGE_MODE_VEB;
6224         else
6225                 veb->bridge_mode = BRIDGE_MODE_VEPA;
6226         i40e_config_bridge_mode(veb);
6227
6228         /* create the remaining VSIs attached to this VEB */
6229         for (v = 0; v < pf->num_alloc_vsi; v++) {
6230                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
6231                         continue;
6232
6233                 if (pf->vsi[v]->veb_idx == veb->idx) {
6234                         struct i40e_vsi *vsi = pf->vsi[v];
6235                         vsi->uplink_seid = veb->seid;
6236                         ret = i40e_add_vsi(vsi);
6237                         if (ret) {
6238                                 dev_info(&pf->pdev->dev,
6239                                          "rebuild of vsi_idx %d failed: %d\n",
6240                                          v, ret);
6241                                 goto end_reconstitute;
6242                         }
6243                         i40e_vsi_reset_stats(vsi);
6244                 }
6245         }
6246
6247         /* create any VEBs attached to this VEB - RECURSION */
6248         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
6249                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
6250                         pf->veb[veb_idx]->uplink_seid = veb->seid;
6251                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
6252                         if (ret)
6253                                 break;
6254                 }
6255         }
6256
6257 end_reconstitute:
6258         return ret;
6259 }
6260
6261 /**
6262  * i40e_get_capabilities - get info about the HW
6263  * @pf: the PF struct
6264  **/
6265 static int i40e_get_capabilities(struct i40e_pf *pf)
6266 {
6267         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
6268         u16 data_size;
6269         int buf_len;
6270         int err;
6271
6272         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
6273         do {
6274                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
6275                 if (!cap_buf)
6276                         return -ENOMEM;
6277
6278                 /* this loads the data into the hw struct for us */
6279                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
6280                                             &data_size,
6281                                             i40e_aqc_opc_list_func_capabilities,
6282                                             NULL);
6283                 /* data loaded, buffer no longer needed */
6284                 kfree(cap_buf);
6285
6286                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
6287                         /* retry with a larger buffer */
6288                         buf_len = data_size;
6289                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
6290                         dev_info(&pf->pdev->dev,
6291                                  "capability discovery failed, err %s aq_err %s\n",
6292                                  i40e_stat_str(&pf->hw, err),
6293                                  i40e_aq_str(&pf->hw,
6294                                              pf->hw.aq.asq_last_status));
6295                         return -ENODEV;
6296                 }
6297         } while (err);
6298
6299         if (((pf->hw.aq.fw_maj_ver == 2) && (pf->hw.aq.fw_min_ver < 22)) ||
6300             (pf->hw.aq.fw_maj_ver < 2)) {
6301                 pf->hw.func_caps.num_msix_vectors++;
6302                 pf->hw.func_caps.num_msix_vectors_vf++;
6303         }
6304
6305         if (pf->hw.debug_mask & I40E_DEBUG_USER)
6306                 dev_info(&pf->pdev->dev,
6307                          "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",
6308                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6309                          pf->hw.func_caps.num_msix_vectors,
6310                          pf->hw.func_caps.num_msix_vectors_vf,
6311                          pf->hw.func_caps.fd_filters_guaranteed,
6312                          pf->hw.func_caps.fd_filters_best_effort,
6313                          pf->hw.func_caps.num_tx_qp,
6314                          pf->hw.func_caps.num_vsis);
6315
6316 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6317                        + pf->hw.func_caps.num_vfs)
6318         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6319                 dev_info(&pf->pdev->dev,
6320                          "got num_vsis %d, setting num_vsis to %d\n",
6321                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6322                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6323         }
6324
6325         return 0;
6326 }
6327
6328 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6329
6330 /**
6331  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6332  * @pf: board private structure
6333  **/
6334 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6335 {
6336         struct i40e_vsi *vsi;
6337         int i;
6338
6339         /* quick workaround for an NVM issue that leaves a critical register
6340          * uninitialized
6341          */
6342         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6343                 static const u32 hkey[] = {
6344                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6345                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6346                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6347                         0x95b3a76d};
6348
6349                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6350                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6351         }
6352
6353         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6354                 return;
6355
6356         /* find existing VSI and see if it needs configuring */
6357         vsi = NULL;
6358         for (i = 0; i < pf->num_alloc_vsi; i++) {
6359                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6360                         vsi = pf->vsi[i];
6361                         break;
6362                 }
6363         }
6364
6365         /* create a new VSI if none exists */
6366         if (!vsi) {
6367                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6368                                      pf->vsi[pf->lan_vsi]->seid, 0);
6369                 if (!vsi) {
6370                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6371                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6372                         return;
6373                 }
6374         }
6375
6376         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6377 }
6378
6379 /**
6380  * i40e_fdir_teardown - release the Flow Director resources
6381  * @pf: board private structure
6382  **/
6383 static void i40e_fdir_teardown(struct i40e_pf *pf)
6384 {
6385         int i;
6386
6387         i40e_fdir_filter_exit(pf);
6388         for (i = 0; i < pf->num_alloc_vsi; i++) {
6389                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6390                         i40e_vsi_release(pf->vsi[i]);
6391                         break;
6392                 }
6393         }
6394 }
6395
6396 /**
6397  * i40e_prep_for_reset - prep for the core to reset
6398  * @pf: board private structure
6399  *
6400  * Close up the VFs and other things in prep for PF Reset.
6401   **/
6402 static void i40e_prep_for_reset(struct i40e_pf *pf)
6403 {
6404         struct i40e_hw *hw = &pf->hw;
6405         i40e_status ret = 0;
6406         u32 v;
6407
6408         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6409         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6410                 return;
6411
6412         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6413
6414         /* quiesce the VSIs and their queues that are not already DOWN */
6415         i40e_pf_quiesce_all_vsi(pf);
6416
6417         for (v = 0; v < pf->num_alloc_vsi; v++) {
6418                 if (pf->vsi[v])
6419                         pf->vsi[v]->seid = 0;
6420         }
6421
6422         i40e_shutdown_adminq(&pf->hw);
6423
6424         /* call shutdown HMC */
6425         if (hw->hmc.hmc_obj) {
6426                 ret = i40e_shutdown_lan_hmc(hw);
6427                 if (ret)
6428                         dev_warn(&pf->pdev->dev,
6429                                  "shutdown_lan_hmc failed: %d\n", ret);
6430         }
6431 }
6432
6433 /**
6434  * i40e_send_version - update firmware with driver version
6435  * @pf: PF struct
6436  */
6437 static void i40e_send_version(struct i40e_pf *pf)
6438 {
6439         struct i40e_driver_version dv;
6440
6441         dv.major_version = DRV_VERSION_MAJOR;
6442         dv.minor_version = DRV_VERSION_MINOR;
6443         dv.build_version = DRV_VERSION_BUILD;
6444         dv.subbuild_version = 0;
6445         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6446         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6447 }
6448
6449 /**
6450  * i40e_reset_and_rebuild - reset and rebuild using a saved config
6451  * @pf: board private structure
6452  * @reinit: if the Main VSI needs to re-initialized.
6453  **/
6454 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
6455 {
6456         struct i40e_hw *hw = &pf->hw;
6457         u8 set_fc_aq_fail = 0;
6458         i40e_status ret;
6459         u32 v;
6460
6461         /* Now we wait for GRST to settle out.
6462          * We don't have to delete the VEBs or VSIs from the hw switch
6463          * because the reset will make them disappear.
6464          */
6465         ret = i40e_pf_reset(hw);
6466         if (ret) {
6467                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6468                 set_bit(__I40E_RESET_FAILED, &pf->state);
6469                 goto clear_recovery;
6470         }
6471         pf->pfr_count++;
6472
6473         if (test_bit(__I40E_DOWN, &pf->state))
6474                 goto clear_recovery;
6475         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6476
6477         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6478         ret = i40e_init_adminq(&pf->hw);
6479         if (ret) {
6480                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, err %s aq_err %s\n",
6481                          i40e_stat_str(&pf->hw, ret),
6482                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6483                 goto clear_recovery;
6484         }
6485
6486         /* re-verify the eeprom if we just had an EMP reset */
6487         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
6488                 i40e_verify_eeprom(pf);
6489
6490         i40e_clear_pxe_mode(hw);
6491         ret = i40e_get_capabilities(pf);
6492         if (ret)
6493                 goto end_core_reset;
6494
6495         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6496                                 hw->func_caps.num_rx_qp,
6497                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6498         if (ret) {
6499                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6500                 goto end_core_reset;
6501         }
6502         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6503         if (ret) {
6504                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6505                 goto end_core_reset;
6506         }
6507
6508 #ifdef CONFIG_I40E_DCB
6509         ret = i40e_init_pf_dcb(pf);
6510         if (ret) {
6511                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
6512                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
6513                 /* Continue without DCB enabled */
6514         }
6515 #endif /* CONFIG_I40E_DCB */
6516 #ifdef I40E_FCOE
6517         ret = i40e_init_pf_fcoe(pf);
6518         if (ret)
6519                 dev_info(&pf->pdev->dev, "init_pf_fcoe failed: %d\n", ret);
6520
6521 #endif
6522         /* do basic switch setup */
6523         ret = i40e_setup_pf_switch(pf, reinit);
6524         if (ret)
6525                 goto end_core_reset;
6526
6527         /* driver is only interested in link up/down and module qualification
6528          * reports from firmware
6529          */
6530         ret = i40e_aq_set_phy_int_mask(&pf->hw,
6531                                        I40E_AQ_EVENT_LINK_UPDOWN |
6532                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
6533         if (ret)
6534                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
6535                          i40e_stat_str(&pf->hw, ret),
6536                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6537
6538         /* make sure our flow control settings are restored */
6539         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6540         if (ret)
6541                 dev_info(&pf->pdev->dev, "set fc fail, err %s aq_err %s\n",
6542                          i40e_stat_str(&pf->hw, ret),
6543                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6544
6545         /* Rebuild the VSIs and VEBs that existed before reset.
6546          * They are still in our local switch element arrays, so only
6547          * need to rebuild the switch model in the HW.
6548          *
6549          * If there were VEBs but the reconstitution failed, we'll try
6550          * try to recover minimal use by getting the basic PF VSI working.
6551          */
6552         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6553                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6554                 /* find the one VEB connected to the MAC, and find orphans */
6555                 for (v = 0; v < I40E_MAX_VEB; v++) {
6556                         if (!pf->veb[v])
6557                                 continue;
6558
6559                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6560                             pf->veb[v]->uplink_seid == 0) {
6561                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6562
6563                                 if (!ret)
6564                                         continue;
6565
6566                                 /* If Main VEB failed, we're in deep doodoo,
6567                                  * so give up rebuilding the switch and set up
6568                                  * for minimal rebuild of PF VSI.
6569                                  * If orphan failed, we'll report the error
6570                                  * but try to keep going.
6571                                  */
6572                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6573                                         dev_info(&pf->pdev->dev,
6574                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6575                                                  ret);
6576                                         pf->vsi[pf->lan_vsi]->uplink_seid
6577                                                                 = pf->mac_seid;
6578                                         break;
6579                                 } else if (pf->veb[v]->uplink_seid == 0) {
6580                                         dev_info(&pf->pdev->dev,
6581                                                  "rebuild of orphan VEB failed: %d\n",
6582                                                  ret);
6583                                 }
6584                         }
6585                 }
6586         }
6587
6588         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6589                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6590                 /* no VEB, so rebuild only the Main VSI */
6591                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6592                 if (ret) {
6593                         dev_info(&pf->pdev->dev,
6594                                  "rebuild of Main VSI failed: %d\n", ret);
6595                         goto end_core_reset;
6596                 }
6597         }
6598
6599         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
6600             (pf->hw.aq.fw_maj_ver < 4)) {
6601                 msleep(75);
6602                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6603                 if (ret)
6604                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
6605                                  i40e_stat_str(&pf->hw, ret),
6606                                  i40e_aq_str(&pf->hw,
6607                                              pf->hw.aq.asq_last_status));
6608         }
6609         /* reinit the misc interrupt */
6610         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6611                 ret = i40e_setup_misc_vector(pf);
6612
6613         /* restart the VSIs that were rebuilt and running before the reset */
6614         i40e_pf_unquiesce_all_vsi(pf);
6615
6616         if (pf->num_alloc_vfs) {
6617                 for (v = 0; v < pf->num_alloc_vfs; v++)
6618                         i40e_reset_vf(&pf->vf[v], true);
6619         }
6620
6621         /* tell the firmware that we're starting */
6622         i40e_send_version(pf);
6623
6624 end_core_reset:
6625         clear_bit(__I40E_RESET_FAILED, &pf->state);
6626 clear_recovery:
6627         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
6628 }
6629
6630 /**
6631  * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
6632  * @pf: board private structure
6633  *
6634  * Close up the VFs and other things in prep for a Core Reset,
6635  * then get ready to rebuild the world.
6636  **/
6637 static void i40e_handle_reset_warning(struct i40e_pf *pf)
6638 {
6639         i40e_prep_for_reset(pf);
6640         i40e_reset_and_rebuild(pf, false);
6641 }
6642
6643 /**
6644  * i40e_handle_mdd_event
6645  * @pf: pointer to the PF structure
6646  *
6647  * Called from the MDD irq handler to identify possibly malicious vfs
6648  **/
6649 static void i40e_handle_mdd_event(struct i40e_pf *pf)
6650 {
6651         struct i40e_hw *hw = &pf->hw;
6652         bool mdd_detected = false;
6653         bool pf_mdd_detected = false;
6654         struct i40e_vf *vf;
6655         u32 reg;
6656         int i;
6657
6658         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
6659                 return;
6660
6661         /* find what triggered the MDD event */
6662         reg = rd32(hw, I40E_GL_MDET_TX);
6663         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
6664                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
6665                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
6666                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
6667                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
6668                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
6669                                 I40E_GL_MDET_TX_EVENT_SHIFT;
6670                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
6671                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
6672                                 pf->hw.func_caps.base_queue;
6673                 if (netif_msg_tx_err(pf))
6674                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
6675                                  event, queue, pf_num, vf_num);
6676                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
6677                 mdd_detected = true;
6678         }
6679         reg = rd32(hw, I40E_GL_MDET_RX);
6680         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
6681                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
6682                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
6683                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
6684                                 I40E_GL_MDET_RX_EVENT_SHIFT;
6685                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
6686                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
6687                                 pf->hw.func_caps.base_queue;
6688                 if (netif_msg_rx_err(pf))
6689                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
6690                                  event, queue, func);
6691                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
6692                 mdd_detected = true;
6693         }
6694
6695         if (mdd_detected) {
6696                 reg = rd32(hw, I40E_PF_MDET_TX);
6697                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
6698                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
6699                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
6700                         pf_mdd_detected = true;
6701                 }
6702                 reg = rd32(hw, I40E_PF_MDET_RX);
6703                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
6704                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
6705                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
6706                         pf_mdd_detected = true;
6707                 }
6708                 /* Queue belongs to the PF, initiate a reset */
6709                 if (pf_mdd_detected) {
6710                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6711                         i40e_service_event_schedule(pf);
6712                 }
6713         }
6714
6715         /* see if one of the VFs needs its hand slapped */
6716         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
6717                 vf = &(pf->vf[i]);
6718                 reg = rd32(hw, I40E_VP_MDET_TX(i));
6719                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
6720                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
6721                         vf->num_mdd_events++;
6722                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
6723                                  i);
6724                 }
6725
6726                 reg = rd32(hw, I40E_VP_MDET_RX(i));
6727                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
6728                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
6729                         vf->num_mdd_events++;
6730                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
6731                                  i);
6732                 }
6733
6734                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
6735                         dev_info(&pf->pdev->dev,
6736                                  "Too many MDD events on VF %d, disabled\n", i);
6737                         dev_info(&pf->pdev->dev,
6738                                  "Use PF Control I/F to re-enable the VF\n");
6739                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
6740                 }
6741         }
6742
6743         /* re-enable mdd interrupt cause */
6744         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
6745         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
6746         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
6747         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
6748         i40e_flush(hw);
6749 }
6750
6751 #ifdef CONFIG_I40E_VXLAN
6752 /**
6753  * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
6754  * @pf: board private structure
6755  **/
6756 static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
6757 {
6758         struct i40e_hw *hw = &pf->hw;
6759         i40e_status ret;
6760         __be16 port;
6761         int i;
6762
6763         if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
6764                 return;
6765
6766         pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
6767
6768         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
6769                 if (pf->pending_vxlan_bitmap & BIT_ULL(i)) {
6770                         pf->pending_vxlan_bitmap &= ~BIT_ULL(i);
6771                         port = pf->vxlan_ports[i];
6772                         if (port)
6773                                 ret = i40e_aq_add_udp_tunnel(hw, ntohs(port),
6774                                                      I40E_AQC_TUNNEL_TYPE_VXLAN,
6775                                                      NULL, NULL);
6776                         else
6777                                 ret = i40e_aq_del_udp_tunnel(hw, i, NULL);
6778
6779                         if (ret) {
6780                                 dev_info(&pf->pdev->dev,
6781                                          "%s vxlan port %d, index %d failed, err %s aq_err %s\n",
6782                                          port ? "add" : "delete",
6783                                          ntohs(port), i,
6784                                          i40e_stat_str(&pf->hw, ret),
6785                                          i40e_aq_str(&pf->hw,
6786                                                     pf->hw.aq.asq_last_status));
6787                                 pf->vxlan_ports[i] = 0;
6788                         }
6789                 }
6790         }
6791 }
6792
6793 #endif
6794 /**
6795  * i40e_service_task - Run the driver's async subtasks
6796  * @work: pointer to work_struct containing our data
6797  **/
6798 static void i40e_service_task(struct work_struct *work)
6799 {
6800         struct i40e_pf *pf = container_of(work,
6801                                           struct i40e_pf,
6802                                           service_task);
6803         unsigned long start_time = jiffies;
6804
6805         /* don't bother with service tasks if a reset is in progress */
6806         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
6807                 i40e_service_event_complete(pf);
6808                 return;
6809         }
6810
6811         i40e_reset_subtask(pf);
6812         i40e_handle_mdd_event(pf);
6813         i40e_vc_process_vflr_event(pf);
6814         i40e_watchdog_subtask(pf);
6815         i40e_fdir_reinit_subtask(pf);
6816         i40e_sync_filters_subtask(pf);
6817 #ifdef CONFIG_I40E_VXLAN
6818         i40e_sync_vxlan_filters_subtask(pf);
6819 #endif
6820         i40e_clean_adminq_subtask(pf);
6821
6822         i40e_service_event_complete(pf);
6823
6824         /* If the tasks have taken longer than one timer cycle or there
6825          * is more work to be done, reschedule the service task now
6826          * rather than wait for the timer to tick again.
6827          */
6828         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
6829             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
6830             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
6831             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
6832                 i40e_service_event_schedule(pf);
6833 }
6834
6835 /**
6836  * i40e_service_timer - timer callback
6837  * @data: pointer to PF struct
6838  **/
6839 static void i40e_service_timer(unsigned long data)
6840 {
6841         struct i40e_pf *pf = (struct i40e_pf *)data;
6842
6843         mod_timer(&pf->service_timer,
6844                   round_jiffies(jiffies + pf->service_timer_period));
6845         i40e_service_event_schedule(pf);
6846 }
6847
6848 /**
6849  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
6850  * @vsi: the VSI being configured
6851  **/
6852 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
6853 {
6854         struct i40e_pf *pf = vsi->back;
6855
6856         switch (vsi->type) {
6857         case I40E_VSI_MAIN:
6858                 vsi->alloc_queue_pairs = pf->num_lan_qps;
6859                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6860                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6861                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6862                         vsi->num_q_vectors = pf->num_lan_msix;
6863                 else
6864                         vsi->num_q_vectors = 1;
6865
6866                 break;
6867
6868         case I40E_VSI_FDIR:
6869                 vsi->alloc_queue_pairs = 1;
6870                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
6871                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6872                 vsi->num_q_vectors = 1;
6873                 break;
6874
6875         case I40E_VSI_VMDQ2:
6876                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
6877                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6878                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6879                 vsi->num_q_vectors = pf->num_vmdq_msix;
6880                 break;
6881
6882         case I40E_VSI_SRIOV:
6883                 vsi->alloc_queue_pairs = pf->num_vf_qps;
6884                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6885                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6886                 break;
6887
6888 #ifdef I40E_FCOE
6889         case I40E_VSI_FCOE:
6890                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
6891                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6892                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6893                 vsi->num_q_vectors = pf->num_fcoe_msix;
6894                 break;
6895
6896 #endif /* I40E_FCOE */
6897         default:
6898                 WARN_ON(1);
6899                 return -ENODATA;
6900         }
6901
6902         return 0;
6903 }
6904
6905 /**
6906  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
6907  * @type: VSI pointer
6908  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
6909  *
6910  * On error: returns error code (negative)
6911  * On success: returns 0
6912  **/
6913 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
6914 {
6915         int size;
6916         int ret = 0;
6917
6918         /* allocate memory for both Tx and Rx ring pointers */
6919         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
6920         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
6921         if (!vsi->tx_rings)
6922                 return -ENOMEM;
6923         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
6924
6925         if (alloc_qvectors) {
6926                 /* allocate memory for q_vector pointers */
6927                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
6928                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
6929                 if (!vsi->q_vectors) {
6930                         ret = -ENOMEM;
6931                         goto err_vectors;
6932                 }
6933         }
6934         return ret;
6935
6936 err_vectors:
6937         kfree(vsi->tx_rings);
6938         return ret;
6939 }
6940
6941 /**
6942  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
6943  * @pf: board private structure
6944  * @type: type of VSI
6945  *
6946  * On error: returns error code (negative)
6947  * On success: returns vsi index in PF (positive)
6948  **/
6949 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
6950 {
6951         int ret = -ENODEV;
6952         struct i40e_vsi *vsi;
6953         int vsi_idx;
6954         int i;
6955
6956         /* Need to protect the allocation of the VSIs at the PF level */
6957         mutex_lock(&pf->switch_mutex);
6958
6959         /* VSI list may be fragmented if VSI creation/destruction has
6960          * been happening.  We can afford to do a quick scan to look
6961          * for any free VSIs in the list.
6962          *
6963          * find next empty vsi slot, looping back around if necessary
6964          */
6965         i = pf->next_vsi;
6966         while (i < pf->num_alloc_vsi && pf->vsi[i])
6967                 i++;
6968         if (i >= pf->num_alloc_vsi) {
6969                 i = 0;
6970                 while (i < pf->next_vsi && pf->vsi[i])
6971                         i++;
6972         }
6973
6974         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
6975                 vsi_idx = i;             /* Found one! */
6976         } else {
6977                 ret = -ENODEV;
6978                 goto unlock_pf;  /* out of VSI slots! */
6979         }
6980         pf->next_vsi = ++i;
6981
6982         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
6983         if (!vsi) {
6984                 ret = -ENOMEM;
6985                 goto unlock_pf;
6986         }
6987         vsi->type = type;
6988         vsi->back = pf;
6989         set_bit(__I40E_DOWN, &vsi->state);
6990         vsi->flags = 0;
6991         vsi->idx = vsi_idx;
6992         vsi->rx_itr_setting = pf->rx_itr_default;
6993         vsi->tx_itr_setting = pf->tx_itr_default;
6994         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
6995                                 pf->rss_table_size : 64;
6996         vsi->netdev_registered = false;
6997         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
6998         INIT_LIST_HEAD(&vsi->mac_filter_list);
6999         vsi->irqs_ready = false;
7000
7001         ret = i40e_set_num_rings_in_vsi(vsi);
7002         if (ret)
7003                 goto err_rings;
7004
7005         ret = i40e_vsi_alloc_arrays(vsi, true);
7006         if (ret)
7007                 goto err_rings;
7008
7009         /* Setup default MSIX irq handler for VSI */
7010         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
7011
7012         pf->vsi[vsi_idx] = vsi;
7013         ret = vsi_idx;
7014         goto unlock_pf;
7015
7016 err_rings:
7017         pf->next_vsi = i - 1;
7018         kfree(vsi);
7019 unlock_pf:
7020         mutex_unlock(&pf->switch_mutex);
7021         return ret;
7022 }
7023
7024 /**
7025  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
7026  * @type: VSI pointer
7027  * @free_qvectors: a bool to specify if q_vectors need to be freed.
7028  *
7029  * On error: returns error code (negative)
7030  * On success: returns 0
7031  **/
7032 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
7033 {
7034         /* free the ring and vector containers */
7035         if (free_qvectors) {
7036                 kfree(vsi->q_vectors);
7037                 vsi->q_vectors = NULL;
7038         }
7039         kfree(vsi->tx_rings);
7040         vsi->tx_rings = NULL;
7041         vsi->rx_rings = NULL;
7042 }
7043
7044 /**
7045  * i40e_vsi_clear - Deallocate the VSI provided
7046  * @vsi: the VSI being un-configured
7047  **/
7048 static int i40e_vsi_clear(struct i40e_vsi *vsi)
7049 {
7050         struct i40e_pf *pf;
7051
7052         if (!vsi)
7053                 return 0;
7054
7055         if (!vsi->back)
7056                 goto free_vsi;
7057         pf = vsi->back;
7058
7059         mutex_lock(&pf->switch_mutex);
7060         if (!pf->vsi[vsi->idx]) {
7061                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
7062                         vsi->idx, vsi->idx, vsi, vsi->type);
7063                 goto unlock_vsi;
7064         }
7065
7066         if (pf->vsi[vsi->idx] != vsi) {
7067                 dev_err(&pf->pdev->dev,
7068                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
7069                         pf->vsi[vsi->idx]->idx,
7070                         pf->vsi[vsi->idx],
7071                         pf->vsi[vsi->idx]->type,
7072                         vsi->idx, vsi, vsi->type);
7073                 goto unlock_vsi;
7074         }
7075
7076         /* updates the PF for this cleared vsi */
7077         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7078         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
7079
7080         i40e_vsi_free_arrays(vsi, true);
7081
7082         pf->vsi[vsi->idx] = NULL;
7083         if (vsi->idx < pf->next_vsi)
7084                 pf->next_vsi = vsi->idx;
7085
7086 unlock_vsi:
7087         mutex_unlock(&pf->switch_mutex);
7088 free_vsi:
7089         kfree(vsi);
7090
7091         return 0;
7092 }
7093
7094 /**
7095  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
7096  * @vsi: the VSI being cleaned
7097  **/
7098 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
7099 {
7100         int i;
7101
7102         if (vsi->tx_rings && vsi->tx_rings[0]) {
7103                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7104                         kfree_rcu(vsi->tx_rings[i], rcu);
7105                         vsi->tx_rings[i] = NULL;
7106                         vsi->rx_rings[i] = NULL;
7107                 }
7108         }
7109 }
7110
7111 /**
7112  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
7113  * @vsi: the VSI being configured
7114  **/
7115 static int i40e_alloc_rings(struct i40e_vsi *vsi)
7116 {
7117         struct i40e_ring *tx_ring, *rx_ring;
7118         struct i40e_pf *pf = vsi->back;
7119         int i;
7120
7121         /* Set basic values in the rings to be used later during open() */
7122         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7123                 /* allocate space for both Tx and Rx in one shot */
7124                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
7125                 if (!tx_ring)
7126                         goto err_out;
7127
7128                 tx_ring->queue_index = i;
7129                 tx_ring->reg_idx = vsi->base_queue + i;
7130                 tx_ring->ring_active = false;
7131                 tx_ring->vsi = vsi;
7132                 tx_ring->netdev = vsi->netdev;
7133                 tx_ring->dev = &pf->pdev->dev;
7134                 tx_ring->count = vsi->num_desc;
7135                 tx_ring->size = 0;
7136                 tx_ring->dcb_tc = 0;
7137                 if (vsi->back->flags & I40E_FLAG_WB_ON_ITR_CAPABLE)
7138                         tx_ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
7139                 if (vsi->back->flags & I40E_FLAG_OUTER_UDP_CSUM_CAPABLE)
7140                         tx_ring->flags |= I40E_TXR_FLAGS_OUTER_UDP_CSUM;
7141                 vsi->tx_rings[i] = tx_ring;
7142
7143                 rx_ring = &tx_ring[1];
7144                 rx_ring->queue_index = i;
7145                 rx_ring->reg_idx = vsi->base_queue + i;
7146                 rx_ring->ring_active = false;
7147                 rx_ring->vsi = vsi;
7148                 rx_ring->netdev = vsi->netdev;
7149                 rx_ring->dev = &pf->pdev->dev;
7150                 rx_ring->count = vsi->num_desc;
7151                 rx_ring->size = 0;
7152                 rx_ring->dcb_tc = 0;
7153                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
7154                         set_ring_16byte_desc_enabled(rx_ring);
7155                 else
7156                         clear_ring_16byte_desc_enabled(rx_ring);
7157                 vsi->rx_rings[i] = rx_ring;
7158         }
7159
7160         return 0;
7161
7162 err_out:
7163         i40e_vsi_clear_rings(vsi);
7164         return -ENOMEM;
7165 }
7166
7167 /**
7168  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
7169  * @pf: board private structure
7170  * @vectors: the number of MSI-X vectors to request
7171  *
7172  * Returns the number of vectors reserved, or error
7173  **/
7174 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
7175 {
7176         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
7177                                         I40E_MIN_MSIX, vectors);
7178         if (vectors < 0) {
7179                 dev_info(&pf->pdev->dev,
7180                          "MSI-X vector reservation failed: %d\n", vectors);
7181                 vectors = 0;
7182         }
7183
7184         return vectors;
7185 }
7186
7187 /**
7188  * i40e_init_msix - Setup the MSIX capability
7189  * @pf: board private structure
7190  *
7191  * Work with the OS to set up the MSIX vectors needed.
7192  *
7193  * Returns the number of vectors reserved or negative on failure
7194  **/
7195 static int i40e_init_msix(struct i40e_pf *pf)
7196 {
7197         struct i40e_hw *hw = &pf->hw;
7198         int vectors_left;
7199         int v_budget, i;
7200         int v_actual;
7201
7202         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
7203                 return -ENODEV;
7204
7205         /* The number of vectors we'll request will be comprised of:
7206          *   - Add 1 for "other" cause for Admin Queue events, etc.
7207          *   - The number of LAN queue pairs
7208          *      - Queues being used for RSS.
7209          *              We don't need as many as max_rss_size vectors.
7210          *              use rss_size instead in the calculation since that
7211          *              is governed by number of cpus in the system.
7212          *      - assumes symmetric Tx/Rx pairing
7213          *   - The number of VMDq pairs
7214 #ifdef I40E_FCOE
7215          *   - The number of FCOE qps.
7216 #endif
7217          * Once we count this up, try the request.
7218          *
7219          * If we can't get what we want, we'll simplify to nearly nothing
7220          * and try again.  If that still fails, we punt.
7221          */
7222         vectors_left = hw->func_caps.num_msix_vectors;
7223         v_budget = 0;
7224
7225         /* reserve one vector for miscellaneous handler */
7226         if (vectors_left) {
7227                 v_budget++;
7228                 vectors_left--;
7229         }
7230
7231         /* reserve vectors for the main PF traffic queues */
7232         pf->num_lan_msix = min_t(int, num_online_cpus(), vectors_left);
7233         vectors_left -= pf->num_lan_msix;
7234         v_budget += pf->num_lan_msix;
7235
7236         /* reserve one vector for sideband flow director */
7237         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7238                 if (vectors_left) {
7239                         v_budget++;
7240                         vectors_left--;
7241                 } else {
7242                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7243                 }
7244         }
7245
7246 #ifdef I40E_FCOE
7247         /* can we reserve enough for FCoE? */
7248         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7249                 if (!vectors_left)
7250                         pf->num_fcoe_msix = 0;
7251                 else if (vectors_left >= pf->num_fcoe_qps)
7252                         pf->num_fcoe_msix = pf->num_fcoe_qps;
7253                 else
7254                         pf->num_fcoe_msix = 1;
7255                 v_budget += pf->num_fcoe_msix;
7256                 vectors_left -= pf->num_fcoe_msix;
7257         }
7258
7259 #endif
7260         /* any vectors left over go for VMDq support */
7261         if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
7262                 int vmdq_vecs_wanted = pf->num_vmdq_vsis * pf->num_vmdq_qps;
7263                 int vmdq_vecs = min_t(int, vectors_left, vmdq_vecs_wanted);
7264
7265                 /* if we're short on vectors for what's desired, we limit
7266                  * the queues per vmdq.  If this is still more than are
7267                  * available, the user will need to change the number of
7268                  * queues/vectors used by the PF later with the ethtool
7269                  * channels command
7270                  */
7271                 if (vmdq_vecs < vmdq_vecs_wanted)
7272                         pf->num_vmdq_qps = 1;
7273                 pf->num_vmdq_msix = pf->num_vmdq_qps;
7274
7275                 v_budget += vmdq_vecs;
7276                 vectors_left -= vmdq_vecs;
7277         }
7278
7279         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
7280                                    GFP_KERNEL);
7281         if (!pf->msix_entries)
7282                 return -ENOMEM;
7283
7284         for (i = 0; i < v_budget; i++)
7285                 pf->msix_entries[i].entry = i;
7286         v_actual = i40e_reserve_msix_vectors(pf, v_budget);
7287
7288         if (v_actual != v_budget) {
7289                 /* If we have limited resources, we will start with no vectors
7290                  * for the special features and then allocate vectors to some
7291                  * of these features based on the policy and at the end disable
7292                  * the features that did not get any vectors.
7293                  */
7294 #ifdef I40E_FCOE
7295                 pf->num_fcoe_qps = 0;
7296                 pf->num_fcoe_msix = 0;
7297 #endif
7298                 pf->num_vmdq_msix = 0;
7299         }
7300
7301         if (v_actual < I40E_MIN_MSIX) {
7302                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
7303                 kfree(pf->msix_entries);
7304                 pf->msix_entries = NULL;
7305                 return -ENODEV;
7306
7307         } else if (v_actual == I40E_MIN_MSIX) {
7308                 /* Adjust for minimal MSIX use */
7309                 pf->num_vmdq_vsis = 0;
7310                 pf->num_vmdq_qps = 0;
7311                 pf->num_lan_qps = 1;
7312                 pf->num_lan_msix = 1;
7313
7314         } else if (v_actual != v_budget) {
7315                 int vec;
7316
7317                 /* reserve the misc vector */
7318                 vec = v_actual - 1;
7319
7320                 /* Scale vector usage down */
7321                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
7322                 pf->num_vmdq_vsis = 1;
7323                 pf->num_vmdq_qps = 1;
7324                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7325
7326                 /* partition out the remaining vectors */
7327                 switch (vec) {
7328                 case 2:
7329                         pf->num_lan_msix = 1;
7330                         break;
7331                 case 3:
7332 #ifdef I40E_FCOE
7333                         /* give one vector to FCoE */
7334                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7335                                 pf->num_lan_msix = 1;
7336                                 pf->num_fcoe_msix = 1;
7337                         }
7338 #else
7339                         pf->num_lan_msix = 2;
7340 #endif
7341                         break;
7342                 default:
7343 #ifdef I40E_FCOE
7344                         /* give one vector to FCoE */
7345                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7346                                 pf->num_fcoe_msix = 1;
7347                                 vec--;
7348                         }
7349 #endif
7350                         /* give the rest to the PF */
7351                         pf->num_lan_msix = min_t(int, vec, pf->num_lan_qps);
7352                         break;
7353                 }
7354         }
7355
7356         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7357             (pf->num_vmdq_msix == 0)) {
7358                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
7359                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
7360         }
7361 #ifdef I40E_FCOE
7362
7363         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
7364                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
7365                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
7366         }
7367 #endif
7368         return v_actual;
7369 }
7370
7371 /**
7372  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7373  * @vsi: the VSI being configured
7374  * @v_idx: index of the vector in the vsi struct
7375  *
7376  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
7377  **/
7378 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
7379 {
7380         struct i40e_q_vector *q_vector;
7381
7382         /* allocate q_vector */
7383         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
7384         if (!q_vector)
7385                 return -ENOMEM;
7386
7387         q_vector->vsi = vsi;
7388         q_vector->v_idx = v_idx;
7389         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
7390         if (vsi->netdev)
7391                 netif_napi_add(vsi->netdev, &q_vector->napi,
7392                                i40e_napi_poll, NAPI_POLL_WEIGHT);
7393
7394         q_vector->rx.latency_range = I40E_LOW_LATENCY;
7395         q_vector->tx.latency_range = I40E_LOW_LATENCY;
7396
7397         /* tie q_vector and vsi together */
7398         vsi->q_vectors[v_idx] = q_vector;
7399
7400         return 0;
7401 }
7402
7403 /**
7404  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
7405  * @vsi: the VSI being configured
7406  *
7407  * We allocate one q_vector per queue interrupt.  If allocation fails we
7408  * return -ENOMEM.
7409  **/
7410 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
7411 {
7412         struct i40e_pf *pf = vsi->back;
7413         int v_idx, num_q_vectors;
7414         int err;
7415
7416         /* if not MSIX, give the one vector only to the LAN VSI */
7417         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7418                 num_q_vectors = vsi->num_q_vectors;
7419         else if (vsi == pf->vsi[pf->lan_vsi])
7420                 num_q_vectors = 1;
7421         else
7422                 return -EINVAL;
7423
7424         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
7425                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
7426                 if (err)
7427                         goto err_out;
7428         }
7429
7430         return 0;
7431
7432 err_out:
7433         while (v_idx--)
7434                 i40e_free_q_vector(vsi, v_idx);
7435
7436         return err;
7437 }
7438
7439 /**
7440  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
7441  * @pf: board private structure to initialize
7442  **/
7443 static int i40e_init_interrupt_scheme(struct i40e_pf *pf)
7444 {
7445         int vectors = 0;
7446         ssize_t size;
7447
7448         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7449                 vectors = i40e_init_msix(pf);
7450                 if (vectors < 0) {
7451                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
7452 #ifdef I40E_FCOE
7453                                        I40E_FLAG_FCOE_ENABLED   |
7454 #endif
7455                                        I40E_FLAG_RSS_ENABLED    |
7456                                        I40E_FLAG_DCB_CAPABLE    |
7457                                        I40E_FLAG_SRIOV_ENABLED  |
7458                                        I40E_FLAG_FD_SB_ENABLED  |
7459                                        I40E_FLAG_FD_ATR_ENABLED |
7460                                        I40E_FLAG_VMDQ_ENABLED);
7461
7462                         /* rework the queue expectations without MSIX */
7463                         i40e_determine_queue_usage(pf);
7464                 }
7465         }
7466
7467         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
7468             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
7469                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
7470                 vectors = pci_enable_msi(pf->pdev);
7471                 if (vectors < 0) {
7472                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
7473                                  vectors);
7474                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
7475                 }
7476                 vectors = 1;  /* one MSI or Legacy vector */
7477         }
7478
7479         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
7480                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
7481
7482         /* set up vector assignment tracking */
7483         size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
7484         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7485         if (!pf->irq_pile) {
7486                 dev_err(&pf->pdev->dev, "error allocating irq_pile memory\n");
7487                 return -ENOMEM;
7488         }
7489         pf->irq_pile->num_entries = vectors;
7490         pf->irq_pile->search_hint = 0;
7491
7492         /* track first vector for misc interrupts, ignore return */
7493         (void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
7494
7495         return 0;
7496 }
7497
7498 /**
7499  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
7500  * @pf: board private structure
7501  *
7502  * This sets up the handler for MSIX 0, which is used to manage the
7503  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
7504  * when in MSI or Legacy interrupt mode.
7505  **/
7506 static int i40e_setup_misc_vector(struct i40e_pf *pf)
7507 {
7508         struct i40e_hw *hw = &pf->hw;
7509         int err = 0;
7510
7511         /* Only request the irq if this is the first time through, and
7512          * not when we're rebuilding after a Reset
7513          */
7514         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7515                 err = request_irq(pf->msix_entries[0].vector,
7516                                   i40e_intr, 0, pf->int_name, pf);
7517                 if (err) {
7518                         dev_info(&pf->pdev->dev,
7519                                  "request_irq for %s failed: %d\n",
7520                                  pf->int_name, err);
7521                         return -EFAULT;
7522                 }
7523         }
7524
7525         i40e_enable_misc_int_causes(pf);
7526
7527         /* associate no queues to the misc vector */
7528         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
7529         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
7530
7531         i40e_flush(hw);
7532
7533         i40e_irq_dynamic_enable_icr0(pf);
7534
7535         return err;
7536 }
7537
7538 /**
7539  * i40e_config_rss_aq - Prepare for RSS using AQ commands
7540  * @vsi: vsi structure
7541  * @seed: RSS hash seed
7542  **/
7543 static int i40e_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed)
7544 {
7545         struct i40e_aqc_get_set_rss_key_data rss_key;
7546         struct i40e_pf *pf = vsi->back;
7547         struct i40e_hw *hw = &pf->hw;
7548         bool pf_lut = false;
7549         u8 *rss_lut;
7550         int ret, i;
7551
7552         memset(&rss_key, 0, sizeof(rss_key));
7553         memcpy(&rss_key, seed, sizeof(rss_key));
7554
7555         rss_lut = kzalloc(pf->rss_table_size, GFP_KERNEL);
7556         if (!rss_lut)
7557                 return -ENOMEM;
7558
7559         /* Populate the LUT with max no. of queues in round robin fashion */
7560         for (i = 0; i < vsi->rss_table_size; i++)
7561                 rss_lut[i] = i % vsi->rss_size;
7562
7563         ret = i40e_aq_set_rss_key(hw, vsi->id, &rss_key);
7564         if (ret) {
7565                 dev_info(&pf->pdev->dev,
7566                          "Cannot set RSS key, err %s aq_err %s\n",
7567                          i40e_stat_str(&pf->hw, ret),
7568                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7569                 return ret;
7570         }
7571
7572         if (vsi->type == I40E_VSI_MAIN)
7573                 pf_lut = true;
7574
7575         ret = i40e_aq_set_rss_lut(hw, vsi->id, pf_lut, rss_lut,
7576                                   vsi->rss_table_size);
7577         if (ret)
7578                 dev_info(&pf->pdev->dev,
7579                          "Cannot set RSS lut, err %s aq_err %s\n",
7580                          i40e_stat_str(&pf->hw, ret),
7581                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7582
7583         return ret;
7584 }
7585
7586 /**
7587  * i40e_vsi_config_rss - Prepare for VSI(VMDq) RSS if used
7588  * @vsi: VSI structure
7589  **/
7590 static int i40e_vsi_config_rss(struct i40e_vsi *vsi)
7591 {
7592         u8 seed[I40E_HKEY_ARRAY_SIZE];
7593         struct i40e_pf *pf = vsi->back;
7594
7595         netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
7596         vsi->rss_size = min_t(int, pf->rss_size, vsi->num_queue_pairs);
7597
7598         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
7599                 return i40e_config_rss_aq(vsi, seed);
7600
7601         return 0;
7602 }
7603
7604 /**
7605  * i40e_config_rss_reg - Prepare for RSS if used
7606  * @pf: board private structure
7607  * @seed: RSS hash seed
7608  **/
7609 static int i40e_config_rss_reg(struct i40e_pf *pf, const u8 *seed)
7610 {
7611         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7612         struct i40e_hw *hw = &pf->hw;
7613         u32 *seed_dw = (u32 *)seed;
7614         u32 current_queue = 0;
7615         u32 lut = 0;
7616         int i, j;
7617
7618         /* Fill out hash function seed */
7619         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
7620                 wr32(hw, I40E_PFQF_HKEY(i), seed_dw[i]);
7621
7622         for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++) {
7623                 lut = 0;
7624                 for (j = 0; j < 4; j++) {
7625                         if (current_queue == vsi->rss_size)
7626                                 current_queue = 0;
7627                         lut |= ((current_queue) << (8 * j));
7628                         current_queue++;
7629                 }
7630                 wr32(&pf->hw, I40E_PFQF_HLUT(i), lut);
7631         }
7632         i40e_flush(hw);
7633
7634         return 0;
7635 }
7636
7637 /**
7638  * i40e_config_rss - Prepare for RSS if used
7639  * @pf: board private structure
7640  **/
7641 static int i40e_config_rss(struct i40e_pf *pf)
7642 {
7643         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7644         u8 seed[I40E_HKEY_ARRAY_SIZE];
7645         struct i40e_hw *hw = &pf->hw;
7646         u32 reg_val;
7647         u64 hena;
7648
7649         netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
7650
7651         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
7652         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
7653                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
7654         hena |= i40e_pf_get_default_rss_hena(pf);
7655
7656         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
7657         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
7658
7659         vsi->rss_size = min_t(int, pf->rss_size, vsi->num_queue_pairs);
7660
7661         /* Determine the RSS table size based on the hardware capabilities */
7662         reg_val = rd32(hw, I40E_PFQF_CTL_0);
7663         reg_val = (pf->rss_table_size == 512) ?
7664                         (reg_val | I40E_PFQF_CTL_0_HASHLUTSIZE_512) :
7665                         (reg_val & ~I40E_PFQF_CTL_0_HASHLUTSIZE_512);
7666         wr32(hw, I40E_PFQF_CTL_0, reg_val);
7667
7668         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
7669                 return i40e_config_rss_aq(pf->vsi[pf->lan_vsi], seed);
7670         else
7671                 return i40e_config_rss_reg(pf, seed);
7672 }
7673
7674 /**
7675  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
7676  * @pf: board private structure
7677  * @queue_count: the requested queue count for rss.
7678  *
7679  * returns 0 if rss is not enabled, if enabled returns the final rss queue
7680  * count which may be different from the requested queue count.
7681  **/
7682 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
7683 {
7684         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
7685         int new_rss_size;
7686
7687         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
7688                 return 0;
7689
7690         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
7691
7692         if (queue_count != vsi->num_queue_pairs) {
7693                 vsi->req_queue_pairs = queue_count;
7694                 i40e_prep_for_reset(pf);
7695
7696                 pf->rss_size = new_rss_size;
7697
7698                 i40e_reset_and_rebuild(pf, true);
7699                 i40e_config_rss(pf);
7700         }
7701         dev_info(&pf->pdev->dev, "RSS count:  %d\n", pf->rss_size);
7702         return pf->rss_size;
7703 }
7704
7705 /**
7706  * i40e_get_npar_bw_setting - Retrieve BW settings for this PF partition
7707  * @pf: board private structure
7708  **/
7709 i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf)
7710 {
7711         i40e_status status;
7712         bool min_valid, max_valid;
7713         u32 max_bw, min_bw;
7714
7715         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
7716                                            &min_valid, &max_valid);
7717
7718         if (!status) {
7719                 if (min_valid)
7720                         pf->npar_min_bw = min_bw;
7721                 if (max_valid)
7722                         pf->npar_max_bw = max_bw;
7723         }
7724
7725         return status;
7726 }
7727
7728 /**
7729  * i40e_set_npar_bw_setting - Set BW settings for this PF partition
7730  * @pf: board private structure
7731  **/
7732 i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf)
7733 {
7734         struct i40e_aqc_configure_partition_bw_data bw_data;
7735         i40e_status status;
7736
7737         /* Set the valid bit for this PF */
7738         bw_data.pf_valid_bits = cpu_to_le16(BIT(pf->hw.pf_id));
7739         bw_data.max_bw[pf->hw.pf_id] = pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK;
7740         bw_data.min_bw[pf->hw.pf_id] = pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK;
7741
7742         /* Set the new bandwidths */
7743         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
7744
7745         return status;
7746 }
7747
7748 /**
7749  * i40e_commit_npar_bw_setting - Commit BW settings for this PF partition
7750  * @pf: board private structure
7751  **/
7752 i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf)
7753 {
7754         /* Commit temporary BW setting to permanent NVM image */
7755         enum i40e_admin_queue_err last_aq_status;
7756         i40e_status ret;
7757         u16 nvm_word;
7758
7759         if (pf->hw.partition_id != 1) {
7760                 dev_info(&pf->pdev->dev,
7761                          "Commit BW only works on partition 1! This is partition %d",
7762                          pf->hw.partition_id);
7763                 ret = I40E_NOT_SUPPORTED;
7764                 goto bw_commit_out;
7765         }
7766
7767         /* Acquire NVM for read access */
7768         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
7769         last_aq_status = pf->hw.aq.asq_last_status;
7770         if (ret) {
7771                 dev_info(&pf->pdev->dev,
7772                          "Cannot acquire NVM for read access, err %s aq_err %s\n",
7773                          i40e_stat_str(&pf->hw, ret),
7774                          i40e_aq_str(&pf->hw, last_aq_status));
7775                 goto bw_commit_out;
7776         }
7777
7778         /* Read word 0x10 of NVM - SW compatibility word 1 */
7779         ret = i40e_aq_read_nvm(&pf->hw,
7780                                I40E_SR_NVM_CONTROL_WORD,
7781                                0x10, sizeof(nvm_word), &nvm_word,
7782                                false, NULL);
7783         /* Save off last admin queue command status before releasing
7784          * the NVM
7785          */
7786         last_aq_status = pf->hw.aq.asq_last_status;
7787         i40e_release_nvm(&pf->hw);
7788         if (ret) {
7789                 dev_info(&pf->pdev->dev, "NVM read error, err %s aq_err %s\n",
7790                          i40e_stat_str(&pf->hw, ret),
7791                          i40e_aq_str(&pf->hw, last_aq_status));
7792                 goto bw_commit_out;
7793         }
7794
7795         /* Wait a bit for NVM release to complete */
7796         msleep(50);
7797
7798         /* Acquire NVM for write access */
7799         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
7800         last_aq_status = pf->hw.aq.asq_last_status;
7801         if (ret) {
7802                 dev_info(&pf->pdev->dev,
7803                          "Cannot acquire NVM for write access, err %s aq_err %s\n",
7804                          i40e_stat_str(&pf->hw, ret),
7805                          i40e_aq_str(&pf->hw, last_aq_status));
7806                 goto bw_commit_out;
7807         }
7808         /* Write it back out unchanged to initiate update NVM,
7809          * which will force a write of the shadow (alt) RAM to
7810          * the NVM - thus storing the bandwidth values permanently.
7811          */
7812         ret = i40e_aq_update_nvm(&pf->hw,
7813                                  I40E_SR_NVM_CONTROL_WORD,
7814                                  0x10, sizeof(nvm_word),
7815                                  &nvm_word, true, NULL);
7816         /* Save off last admin queue command status before releasing
7817          * the NVM
7818          */
7819         last_aq_status = pf->hw.aq.asq_last_status;
7820         i40e_release_nvm(&pf->hw);
7821         if (ret)
7822                 dev_info(&pf->pdev->dev,
7823                          "BW settings NOT SAVED, err %s aq_err %s\n",
7824                          i40e_stat_str(&pf->hw, ret),
7825                          i40e_aq_str(&pf->hw, last_aq_status));
7826 bw_commit_out:
7827
7828         return ret;
7829 }
7830
7831 /**
7832  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
7833  * @pf: board private structure to initialize
7834  *
7835  * i40e_sw_init initializes the Adapter private data structure.
7836  * Fields are initialized based on PCI device information and
7837  * OS network device settings (MTU size).
7838  **/
7839 static int i40e_sw_init(struct i40e_pf *pf)
7840 {
7841         int err = 0;
7842         int size;
7843
7844         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
7845                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
7846         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
7847         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
7848                 if (I40E_DEBUG_USER & debug)
7849                         pf->hw.debug_mask = debug;
7850                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
7851                                                 I40E_DEFAULT_MSG_ENABLE);
7852         }
7853
7854         /* Set default capability flags */
7855         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
7856                     I40E_FLAG_MSI_ENABLED     |
7857                     I40E_FLAG_MSIX_ENABLED;
7858
7859         if (iommu_present(&pci_bus_type))
7860                 pf->flags |= I40E_FLAG_RX_PS_ENABLED;
7861         else
7862                 pf->flags |= I40E_FLAG_RX_1BUF_ENABLED;
7863
7864         /* Set default ITR */
7865         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
7866         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
7867
7868         /* Depending on PF configurations, it is possible that the RSS
7869          * maximum might end up larger than the available queues
7870          */
7871         pf->rss_size_max = BIT(pf->hw.func_caps.rss_table_entry_width);
7872         pf->rss_size = 1;
7873         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
7874         pf->rss_size_max = min_t(int, pf->rss_size_max,
7875                                  pf->hw.func_caps.num_tx_qp);
7876         if (pf->hw.func_caps.rss) {
7877                 pf->flags |= I40E_FLAG_RSS_ENABLED;
7878                 pf->rss_size = min_t(int, pf->rss_size_max, num_online_cpus());
7879         }
7880
7881         /* MFP mode enabled */
7882         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.flex10_enable) {
7883                 pf->flags |= I40E_FLAG_MFP_ENABLED;
7884                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
7885                 if (i40e_get_npar_bw_setting(pf))
7886                         dev_warn(&pf->pdev->dev,
7887                                  "Could not get NPAR bw settings\n");
7888                 else
7889                         dev_info(&pf->pdev->dev,
7890                                  "Min BW = %8.8x, Max BW = %8.8x\n",
7891                                  pf->npar_min_bw, pf->npar_max_bw);
7892         }
7893
7894         /* FW/NVM is not yet fixed in this regard */
7895         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
7896             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
7897                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
7898                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
7899                 if (!(pf->flags & I40E_FLAG_MFP_ENABLED)) {
7900                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7901                 } else {
7902                         dev_info(&pf->pdev->dev,
7903                                  "Flow Director Sideband mode Disabled in MFP mode\n");
7904                 }
7905                 pf->fdir_pf_filter_count =
7906                                  pf->hw.func_caps.fd_filters_guaranteed;
7907                 pf->hw.fdir_shared_filter_count =
7908                                  pf->hw.func_caps.fd_filters_best_effort;
7909         }
7910
7911         if (pf->hw.func_caps.vmdq) {
7912                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
7913                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
7914         }
7915
7916 #ifdef I40E_FCOE
7917         err = i40e_init_pf_fcoe(pf);
7918         if (err)
7919                 dev_info(&pf->pdev->dev, "init_pf_fcoe failed: %d\n", err);
7920
7921 #endif /* I40E_FCOE */
7922 #ifdef CONFIG_PCI_IOV
7923         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
7924                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
7925                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
7926                 pf->num_req_vfs = min_t(int,
7927                                         pf->hw.func_caps.num_vfs,
7928                                         I40E_MAX_VF_COUNT);
7929         }
7930 #endif /* CONFIG_PCI_IOV */
7931         if (pf->hw.mac.type == I40E_MAC_X722) {
7932                 pf->flags |= I40E_FLAG_RSS_AQ_CAPABLE |
7933                              I40E_FLAG_128_QP_RSS_CAPABLE |
7934                              I40E_FLAG_HW_ATR_EVICT_CAPABLE |
7935                              I40E_FLAG_OUTER_UDP_CSUM_CAPABLE |
7936                              I40E_FLAG_WB_ON_ITR_CAPABLE |
7937                              I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE;
7938         }
7939         pf->eeprom_version = 0xDEAD;
7940         pf->lan_veb = I40E_NO_VEB;
7941         pf->lan_vsi = I40E_NO_VSI;
7942
7943         /* set up queue assignment tracking */
7944         size = sizeof(struct i40e_lump_tracking)
7945                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
7946         pf->qp_pile = kzalloc(size, GFP_KERNEL);
7947         if (!pf->qp_pile) {
7948                 err = -ENOMEM;
7949                 goto sw_init_done;
7950         }
7951         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
7952         pf->qp_pile->search_hint = 0;
7953
7954         pf->tx_timeout_recovery_level = 1;
7955
7956         mutex_init(&pf->switch_mutex);
7957
7958         /* If NPAR is enabled nudge the Tx scheduler */
7959         if (pf->hw.func_caps.npar_enable && (!i40e_get_npar_bw_setting(pf)))
7960                 i40e_set_npar_bw_setting(pf);
7961
7962 sw_init_done:
7963         return err;
7964 }
7965
7966 /**
7967  * i40e_set_ntuple - set the ntuple feature flag and take action
7968  * @pf: board private structure to initialize
7969  * @features: the feature set that the stack is suggesting
7970  *
7971  * returns a bool to indicate if reset needs to happen
7972  **/
7973 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
7974 {
7975         bool need_reset = false;
7976
7977         /* Check if Flow Director n-tuple support was enabled or disabled.  If
7978          * the state changed, we need to reset.
7979          */
7980         if (features & NETIF_F_NTUPLE) {
7981                 /* Enable filters and mark for reset */
7982                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
7983                         need_reset = true;
7984                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7985         } else {
7986                 /* turn off filters, mark for reset and clear SW filter list */
7987                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7988                         need_reset = true;
7989                         i40e_fdir_filter_exit(pf);
7990                 }
7991                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7992                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
7993                 /* reset fd counters */
7994                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
7995                 pf->fdir_pf_active_filters = 0;
7996                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
7997                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
7998                         dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
7999                 /* if ATR was auto disabled it can be re-enabled. */
8000                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
8001                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
8002                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
8003         }
8004         return need_reset;
8005 }
8006
8007 /**
8008  * i40e_set_features - set the netdev feature flags
8009  * @netdev: ptr to the netdev being adjusted
8010  * @features: the feature set that the stack is suggesting
8011  **/
8012 static int i40e_set_features(struct net_device *netdev,
8013                              netdev_features_t features)
8014 {
8015         struct i40e_netdev_priv *np = netdev_priv(netdev);
8016         struct i40e_vsi *vsi = np->vsi;
8017         struct i40e_pf *pf = vsi->back;
8018         bool need_reset;
8019
8020         if (features & NETIF_F_HW_VLAN_CTAG_RX)
8021                 i40e_vlan_stripping_enable(vsi);
8022         else
8023                 i40e_vlan_stripping_disable(vsi);
8024
8025         need_reset = i40e_set_ntuple(pf, features);
8026
8027         if (need_reset)
8028                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8029
8030         return 0;
8031 }
8032
8033 #ifdef CONFIG_I40E_VXLAN
8034 /**
8035  * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
8036  * @pf: board private structure
8037  * @port: The UDP port to look up
8038  *
8039  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
8040  **/
8041 static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
8042 {
8043         u8 i;
8044
8045         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
8046                 if (pf->vxlan_ports[i] == port)
8047                         return i;
8048         }
8049
8050         return i;
8051 }
8052
8053 /**
8054  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
8055  * @netdev: This physical port's netdev
8056  * @sa_family: Socket Family that VXLAN is notifying us about
8057  * @port: New UDP port number that VXLAN started listening to
8058  **/
8059 static void i40e_add_vxlan_port(struct net_device *netdev,
8060                                 sa_family_t sa_family, __be16 port)
8061 {
8062         struct i40e_netdev_priv *np = netdev_priv(netdev);
8063         struct i40e_vsi *vsi = np->vsi;
8064         struct i40e_pf *pf = vsi->back;
8065         u8 next_idx;
8066         u8 idx;
8067
8068         if (sa_family == AF_INET6)
8069                 return;
8070
8071         idx = i40e_get_vxlan_port_idx(pf, port);
8072
8073         /* Check if port already exists */
8074         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8075                 netdev_info(netdev, "vxlan port %d already offloaded\n",
8076                             ntohs(port));
8077                 return;
8078         }
8079
8080         /* Now check if there is space to add the new port */
8081         next_idx = i40e_get_vxlan_port_idx(pf, 0);
8082
8083         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8084                 netdev_info(netdev, "maximum number of vxlan UDP ports reached, not adding port %d\n",
8085                             ntohs(port));
8086                 return;
8087         }
8088
8089         /* New port: add it and mark its index in the bitmap */
8090         pf->vxlan_ports[next_idx] = port;
8091         pf->pending_vxlan_bitmap |= BIT_ULL(next_idx);
8092         pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
8093 }
8094
8095 /**
8096  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
8097  * @netdev: This physical port's netdev
8098  * @sa_family: Socket Family that VXLAN is notifying us about
8099  * @port: UDP port number that VXLAN stopped listening to
8100  **/
8101 static void i40e_del_vxlan_port(struct net_device *netdev,
8102                                 sa_family_t sa_family, __be16 port)
8103 {
8104         struct i40e_netdev_priv *np = netdev_priv(netdev);
8105         struct i40e_vsi *vsi = np->vsi;
8106         struct i40e_pf *pf = vsi->back;
8107         u8 idx;
8108
8109         if (sa_family == AF_INET6)
8110                 return;
8111
8112         idx = i40e_get_vxlan_port_idx(pf, port);
8113
8114         /* Check if port already exists */
8115         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8116                 /* if port exists, set it to 0 (mark for deletion)
8117                  * and make it pending
8118                  */
8119                 pf->vxlan_ports[idx] = 0;
8120                 pf->pending_vxlan_bitmap |= BIT_ULL(idx);
8121                 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
8122
8123                 dev_info(&pf->pdev->dev, "deleting vxlan port %d\n",
8124                          ntohs(port));
8125         } else {
8126                 netdev_warn(netdev, "vxlan port %d was not found, not deleting\n",
8127                             ntohs(port));
8128         }
8129 }
8130
8131 #endif
8132 static int i40e_get_phys_port_id(struct net_device *netdev,
8133                                  struct netdev_phys_item_id *ppid)
8134 {
8135         struct i40e_netdev_priv *np = netdev_priv(netdev);
8136         struct i40e_pf *pf = np->vsi->back;
8137         struct i40e_hw *hw = &pf->hw;
8138
8139         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
8140                 return -EOPNOTSUPP;
8141
8142         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
8143         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
8144
8145         return 0;
8146 }
8147
8148 /**
8149  * i40e_ndo_fdb_add - add an entry to the hardware database
8150  * @ndm: the input from the stack
8151  * @tb: pointer to array of nladdr (unused)
8152  * @dev: the net device pointer
8153  * @addr: the MAC address entry being added
8154  * @flags: instructions from stack about fdb operation
8155  */
8156 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
8157                             struct net_device *dev,
8158                             const unsigned char *addr, u16 vid,
8159                             u16 flags)
8160 {
8161         struct i40e_netdev_priv *np = netdev_priv(dev);
8162         struct i40e_pf *pf = np->vsi->back;
8163         int err = 0;
8164
8165         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
8166                 return -EOPNOTSUPP;
8167
8168         if (vid) {
8169                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
8170                 return -EINVAL;
8171         }
8172
8173         /* Hardware does not support aging addresses so if a
8174          * ndm_state is given only allow permanent addresses
8175          */
8176         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
8177                 netdev_info(dev, "FDB only supports static addresses\n");
8178                 return -EINVAL;
8179         }
8180
8181         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
8182                 err = dev_uc_add_excl(dev, addr);
8183         else if (is_multicast_ether_addr(addr))
8184                 err = dev_mc_add_excl(dev, addr);
8185         else
8186                 err = -EINVAL;
8187
8188         /* Only return duplicate errors if NLM_F_EXCL is set */
8189         if (err == -EEXIST && !(flags & NLM_F_EXCL))
8190                 err = 0;
8191
8192         return err;
8193 }
8194
8195 /**
8196  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
8197  * @dev: the netdev being configured
8198  * @nlh: RTNL message
8199  *
8200  * Inserts a new hardware bridge if not already created and
8201  * enables the bridging mode requested (VEB or VEPA). If the
8202  * hardware bridge has already been inserted and the request
8203  * is to change the mode then that requires a PF reset to
8204  * allow rebuild of the components with required hardware
8205  * bridge mode enabled.
8206  **/
8207 static int i40e_ndo_bridge_setlink(struct net_device *dev,
8208                                    struct nlmsghdr *nlh,
8209                                    u16 flags)
8210 {
8211         struct i40e_netdev_priv *np = netdev_priv(dev);
8212         struct i40e_vsi *vsi = np->vsi;
8213         struct i40e_pf *pf = vsi->back;
8214         struct i40e_veb *veb = NULL;
8215         struct nlattr *attr, *br_spec;
8216         int i, rem;
8217
8218         /* Only for PF VSI for now */
8219         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8220                 return -EOPNOTSUPP;
8221
8222         /* Find the HW bridge for PF VSI */
8223         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8224                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8225                         veb = pf->veb[i];
8226         }
8227
8228         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
8229
8230         nla_for_each_nested(attr, br_spec, rem) {
8231                 __u16 mode;
8232
8233                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
8234                         continue;
8235
8236                 mode = nla_get_u16(attr);
8237                 if ((mode != BRIDGE_MODE_VEPA) &&
8238                     (mode != BRIDGE_MODE_VEB))
8239                         return -EINVAL;
8240
8241                 /* Insert a new HW bridge */
8242                 if (!veb) {
8243                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8244                                              vsi->tc_config.enabled_tc);
8245                         if (veb) {
8246                                 veb->bridge_mode = mode;
8247                                 i40e_config_bridge_mode(veb);
8248                         } else {
8249                                 /* No Bridge HW offload available */
8250                                 return -ENOENT;
8251                         }
8252                         break;
8253                 } else if (mode != veb->bridge_mode) {
8254                         /* Existing HW bridge but different mode needs reset */
8255                         veb->bridge_mode = mode;
8256                         /* TODO: If no VFs or VMDq VSIs, disallow VEB mode */
8257                         if (mode == BRIDGE_MODE_VEB)
8258                                 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
8259                         else
8260                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
8261                         i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8262                         break;
8263                 }
8264         }
8265
8266         return 0;
8267 }
8268
8269 /**
8270  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
8271  * @skb: skb buff
8272  * @pid: process id
8273  * @seq: RTNL message seq #
8274  * @dev: the netdev being configured
8275  * @filter_mask: unused
8276  *
8277  * Return the mode in which the hardware bridge is operating in
8278  * i.e VEB or VEPA.
8279  **/
8280 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
8281                                    struct net_device *dev,
8282                                    u32 filter_mask, int nlflags)
8283 {
8284         struct i40e_netdev_priv *np = netdev_priv(dev);
8285         struct i40e_vsi *vsi = np->vsi;
8286         struct i40e_pf *pf = vsi->back;
8287         struct i40e_veb *veb = NULL;
8288         int i;
8289
8290         /* Only for PF VSI for now */
8291         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8292                 return -EOPNOTSUPP;
8293
8294         /* Find the HW bridge for the PF VSI */
8295         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8296                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8297                         veb = pf->veb[i];
8298         }
8299
8300         if (!veb)
8301                 return 0;
8302
8303         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
8304                                        nlflags, 0, 0, filter_mask, NULL);
8305 }
8306
8307 #define I40E_MAX_TUNNEL_HDR_LEN 80
8308 /**
8309  * i40e_features_check - Validate encapsulated packet conforms to limits
8310  * @skb: skb buff
8311  * @netdev: This physical port's netdev
8312  * @features: Offload features that the stack believes apply
8313  **/
8314 static netdev_features_t i40e_features_check(struct sk_buff *skb,
8315                                              struct net_device *dev,
8316                                              netdev_features_t features)
8317 {
8318         if (skb->encapsulation &&
8319             (skb_inner_mac_header(skb) - skb_transport_header(skb) >
8320              I40E_MAX_TUNNEL_HDR_LEN))
8321                 return features & ~(NETIF_F_ALL_CSUM | NETIF_F_GSO_MASK);
8322
8323         return features;
8324 }
8325
8326 static const struct net_device_ops i40e_netdev_ops = {
8327         .ndo_open               = i40e_open,
8328         .ndo_stop               = i40e_close,
8329         .ndo_start_xmit         = i40e_lan_xmit_frame,
8330         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
8331         .ndo_set_rx_mode        = i40e_set_rx_mode,
8332         .ndo_validate_addr      = eth_validate_addr,
8333         .ndo_set_mac_address    = i40e_set_mac,
8334         .ndo_change_mtu         = i40e_change_mtu,
8335         .ndo_do_ioctl           = i40e_ioctl,
8336         .ndo_tx_timeout         = i40e_tx_timeout,
8337         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
8338         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
8339 #ifdef CONFIG_NET_POLL_CONTROLLER
8340         .ndo_poll_controller    = i40e_netpoll,
8341 #endif
8342         .ndo_setup_tc           = i40e_setup_tc,
8343 #ifdef I40E_FCOE
8344         .ndo_fcoe_enable        = i40e_fcoe_enable,
8345         .ndo_fcoe_disable       = i40e_fcoe_disable,
8346 #endif
8347         .ndo_set_features       = i40e_set_features,
8348         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
8349         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
8350         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
8351         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
8352         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
8353         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
8354 #ifdef CONFIG_I40E_VXLAN
8355         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
8356         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
8357 #endif
8358         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
8359         .ndo_fdb_add            = i40e_ndo_fdb_add,
8360         .ndo_features_check     = i40e_features_check,
8361         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
8362         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
8363 };
8364
8365 /**
8366  * i40e_config_netdev - Setup the netdev flags
8367  * @vsi: the VSI being configured
8368  *
8369  * Returns 0 on success, negative value on failure
8370  **/
8371 static int i40e_config_netdev(struct i40e_vsi *vsi)
8372 {
8373         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
8374         struct i40e_pf *pf = vsi->back;
8375         struct i40e_hw *hw = &pf->hw;
8376         struct i40e_netdev_priv *np;
8377         struct net_device *netdev;
8378         u8 mac_addr[ETH_ALEN];
8379         int etherdev_size;
8380
8381         etherdev_size = sizeof(struct i40e_netdev_priv);
8382         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
8383         if (!netdev)
8384                 return -ENOMEM;
8385
8386         vsi->netdev = netdev;
8387         np = netdev_priv(netdev);
8388         np->vsi = vsi;
8389
8390         netdev->hw_enc_features |= NETIF_F_IP_CSUM       |
8391                                   NETIF_F_GSO_UDP_TUNNEL |
8392                                   NETIF_F_TSO;
8393
8394         netdev->features = NETIF_F_SG                  |
8395                            NETIF_F_IP_CSUM             |
8396                            NETIF_F_SCTP_CSUM           |
8397                            NETIF_F_HIGHDMA             |
8398                            NETIF_F_GSO_UDP_TUNNEL      |
8399                            NETIF_F_HW_VLAN_CTAG_TX     |
8400                            NETIF_F_HW_VLAN_CTAG_RX     |
8401                            NETIF_F_HW_VLAN_CTAG_FILTER |
8402                            NETIF_F_IPV6_CSUM           |
8403                            NETIF_F_TSO                 |
8404                            NETIF_F_TSO_ECN             |
8405                            NETIF_F_TSO6                |
8406                            NETIF_F_RXCSUM              |
8407                            NETIF_F_RXHASH              |
8408                            0;
8409
8410         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
8411                 netdev->features |= NETIF_F_NTUPLE;
8412
8413         /* copy netdev features into list of user selectable features */
8414         netdev->hw_features |= netdev->features;
8415
8416         if (vsi->type == I40E_VSI_MAIN) {
8417                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
8418                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
8419                 /* The following steps are necessary to prevent reception
8420                  * of tagged packets - some older NVM configurations load a
8421                  * default a MAC-VLAN filter that accepts any tagged packet
8422                  * which must be replaced by a normal filter.
8423                  */
8424                 if (!i40e_rm_default_mac_filter(vsi, mac_addr))
8425                         i40e_add_filter(vsi, mac_addr,
8426                                         I40E_VLAN_ANY, false, true);
8427         } else {
8428                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
8429                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
8430                          pf->vsi[pf->lan_vsi]->netdev->name);
8431                 random_ether_addr(mac_addr);
8432                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
8433         }
8434         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
8435
8436         ether_addr_copy(netdev->dev_addr, mac_addr);
8437         ether_addr_copy(netdev->perm_addr, mac_addr);
8438         /* vlan gets same features (except vlan offload)
8439          * after any tweaks for specific VSI types
8440          */
8441         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
8442                                                      NETIF_F_HW_VLAN_CTAG_RX |
8443                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
8444         netdev->priv_flags |= IFF_UNICAST_FLT;
8445         netdev->priv_flags |= IFF_SUPP_NOFCS;
8446         /* Setup netdev TC information */
8447         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
8448
8449         netdev->netdev_ops = &i40e_netdev_ops;
8450         netdev->watchdog_timeo = 5 * HZ;
8451         i40e_set_ethtool_ops(netdev);
8452 #ifdef I40E_FCOE
8453         i40e_fcoe_config_netdev(netdev, vsi);
8454 #endif
8455
8456         return 0;
8457 }
8458
8459 /**
8460  * i40e_vsi_delete - Delete a VSI from the switch
8461  * @vsi: the VSI being removed
8462  *
8463  * Returns 0 on success, negative value on failure
8464  **/
8465 static void i40e_vsi_delete(struct i40e_vsi *vsi)
8466 {
8467         /* remove default VSI is not allowed */
8468         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
8469                 return;
8470
8471         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
8472 }
8473
8474 /**
8475  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
8476  * @vsi: the VSI being queried
8477  *
8478  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
8479  **/
8480 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
8481 {
8482         struct i40e_veb *veb;
8483         struct i40e_pf *pf = vsi->back;
8484
8485         /* Uplink is not a bridge so default to VEB */
8486         if (vsi->veb_idx == I40E_NO_VEB)
8487                 return 1;
8488
8489         veb = pf->veb[vsi->veb_idx];
8490         /* Uplink is a bridge in VEPA mode */
8491         if (veb && (veb->bridge_mode & BRIDGE_MODE_VEPA))
8492                 return 0;
8493
8494         /* Uplink is a bridge in VEB mode */
8495         return 1;
8496 }
8497
8498 /**
8499  * i40e_add_vsi - Add a VSI to the switch
8500  * @vsi: the VSI being configured
8501  *
8502  * This initializes a VSI context depending on the VSI type to be added and
8503  * passes it down to the add_vsi aq command.
8504  **/
8505 static int i40e_add_vsi(struct i40e_vsi *vsi)
8506 {
8507         int ret = -ENODEV;
8508         struct i40e_mac_filter *f, *ftmp;
8509         struct i40e_pf *pf = vsi->back;
8510         struct i40e_hw *hw = &pf->hw;
8511         struct i40e_vsi_context ctxt;
8512         u8 enabled_tc = 0x1; /* TC0 enabled */
8513         int f_count = 0;
8514
8515         memset(&ctxt, 0, sizeof(ctxt));
8516         switch (vsi->type) {
8517         case I40E_VSI_MAIN:
8518                 /* The PF's main VSI is already setup as part of the
8519                  * device initialization, so we'll not bother with
8520                  * the add_vsi call, but we will retrieve the current
8521                  * VSI context.
8522                  */
8523                 ctxt.seid = pf->main_vsi_seid;
8524                 ctxt.pf_num = pf->hw.pf_id;
8525                 ctxt.vf_num = 0;
8526                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
8527                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8528                 if (ret) {
8529                         dev_info(&pf->pdev->dev,
8530                                  "couldn't get PF vsi config, err %s aq_err %s\n",
8531                                  i40e_stat_str(&pf->hw, ret),
8532                                  i40e_aq_str(&pf->hw,
8533                                              pf->hw.aq.asq_last_status));
8534                         return -ENOENT;
8535                 }
8536                 vsi->info = ctxt.info;
8537                 vsi->info.valid_sections = 0;
8538
8539                 vsi->seid = ctxt.seid;
8540                 vsi->id = ctxt.vsi_number;
8541
8542                 enabled_tc = i40e_pf_get_tc_map(pf);
8543
8544                 /* MFP mode setup queue map and update VSI */
8545                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
8546                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
8547                         memset(&ctxt, 0, sizeof(ctxt));
8548                         ctxt.seid = pf->main_vsi_seid;
8549                         ctxt.pf_num = pf->hw.pf_id;
8550                         ctxt.vf_num = 0;
8551                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
8552                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
8553                         if (ret) {
8554                                 dev_info(&pf->pdev->dev,
8555                                          "update vsi failed, err %s aq_err %s\n",
8556                                          i40e_stat_str(&pf->hw, ret),
8557                                          i40e_aq_str(&pf->hw,
8558                                                     pf->hw.aq.asq_last_status));
8559                                 ret = -ENOENT;
8560                                 goto err;
8561                         }
8562                         /* update the local VSI info queue map */
8563                         i40e_vsi_update_queue_map(vsi, &ctxt);
8564                         vsi->info.valid_sections = 0;
8565                 } else {
8566                         /* Default/Main VSI is only enabled for TC0
8567                          * reconfigure it to enable all TCs that are
8568                          * available on the port in SFP mode.
8569                          * For MFP case the iSCSI PF would use this
8570                          * flow to enable LAN+iSCSI TC.
8571                          */
8572                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
8573                         if (ret) {
8574                                 dev_info(&pf->pdev->dev,
8575                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %s aq_err %s\n",
8576                                          enabled_tc,
8577                                          i40e_stat_str(&pf->hw, ret),
8578                                          i40e_aq_str(&pf->hw,
8579                                                     pf->hw.aq.asq_last_status));
8580                                 ret = -ENOENT;
8581                         }
8582                 }
8583                 break;
8584
8585         case I40E_VSI_FDIR:
8586                 ctxt.pf_num = hw->pf_id;
8587                 ctxt.vf_num = 0;
8588                 ctxt.uplink_seid = vsi->uplink_seid;
8589                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8590                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
8591                 if ((pf->flags & I40E_FLAG_VEB_MODE_ENABLED) &&
8592                     (i40e_is_vsi_uplink_mode_veb(vsi))) {
8593                         ctxt.info.valid_sections |=
8594                              cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8595                         ctxt.info.switch_id =
8596                            cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8597                 }
8598                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8599                 break;
8600
8601         case I40E_VSI_VMDQ2:
8602                 ctxt.pf_num = hw->pf_id;
8603                 ctxt.vf_num = 0;
8604                 ctxt.uplink_seid = vsi->uplink_seid;
8605                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8606                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
8607
8608                 /* This VSI is connected to VEB so the switch_id
8609                  * should be set to zero by default.
8610                  */
8611                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8612                         ctxt.info.valid_sections |=
8613                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8614                         ctxt.info.switch_id =
8615                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8616                 }
8617
8618                 /* Setup the VSI tx/rx queue map for TC0 only for now */
8619                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8620                 break;
8621
8622         case I40E_VSI_SRIOV:
8623                 ctxt.pf_num = hw->pf_id;
8624                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
8625                 ctxt.uplink_seid = vsi->uplink_seid;
8626                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
8627                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
8628
8629                 /* This VSI is connected to VEB so the switch_id
8630                  * should be set to zero by default.
8631                  */
8632                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
8633                         ctxt.info.valid_sections |=
8634                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
8635                         ctxt.info.switch_id =
8636                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
8637                 }
8638
8639                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
8640                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
8641                 if (pf->vf[vsi->vf_id].spoofchk) {
8642                         ctxt.info.valid_sections |=
8643                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
8644                         ctxt.info.sec_flags |=
8645                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
8646                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
8647                 }
8648                 /* Setup the VSI tx/rx queue map for TC0 only for now */
8649                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
8650                 break;
8651
8652 #ifdef I40E_FCOE
8653         case I40E_VSI_FCOE:
8654                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
8655                 if (ret) {
8656                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
8657                         return ret;
8658                 }
8659                 break;
8660
8661 #endif /* I40E_FCOE */
8662         default:
8663                 return -ENODEV;
8664         }
8665
8666         if (vsi->type != I40E_VSI_MAIN) {
8667                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
8668                 if (ret) {
8669                         dev_info(&vsi->back->pdev->dev,
8670                                  "add vsi failed, err %s aq_err %s\n",
8671                                  i40e_stat_str(&pf->hw, ret),
8672                                  i40e_aq_str(&pf->hw,
8673                                              pf->hw.aq.asq_last_status));
8674                         ret = -ENOENT;
8675                         goto err;
8676                 }
8677                 vsi->info = ctxt.info;
8678                 vsi->info.valid_sections = 0;
8679                 vsi->seid = ctxt.seid;
8680                 vsi->id = ctxt.vsi_number;
8681         }
8682
8683         /* If macvlan filters already exist, force them to get loaded */
8684         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
8685                 f->changed = true;
8686                 f_count++;
8687
8688                 if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
8689                         struct i40e_aqc_remove_macvlan_element_data element;
8690
8691                         memset(&element, 0, sizeof(element));
8692                         ether_addr_copy(element.mac_addr, f->macaddr);
8693                         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
8694                         ret = i40e_aq_remove_macvlan(hw, vsi->seid,
8695                                                      &element, 1, NULL);
8696                         if (ret) {
8697                                 /* some older FW has a different default */
8698                                 element.flags |=
8699                                                I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
8700                                 i40e_aq_remove_macvlan(hw, vsi->seid,
8701                                                        &element, 1, NULL);
8702                         }
8703
8704                         i40e_aq_mac_address_write(hw,
8705                                                   I40E_AQC_WRITE_TYPE_LAA_WOL,
8706                                                   f->macaddr, NULL);
8707                 }
8708         }
8709         if (f_count) {
8710                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
8711                 pf->flags |= I40E_FLAG_FILTER_SYNC;
8712         }
8713
8714         /* Update VSI BW information */
8715         ret = i40e_vsi_get_bw_info(vsi);
8716         if (ret) {
8717                 dev_info(&pf->pdev->dev,
8718                          "couldn't get vsi bw info, err %s aq_err %s\n",
8719                          i40e_stat_str(&pf->hw, ret),
8720                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
8721                 /* VSI is already added so not tearing that up */
8722                 ret = 0;
8723         }
8724
8725 err:
8726         return ret;
8727 }
8728
8729 /**
8730  * i40e_vsi_release - Delete a VSI and free its resources
8731  * @vsi: the VSI being removed
8732  *
8733  * Returns 0 on success or < 0 on error
8734  **/
8735 int i40e_vsi_release(struct i40e_vsi *vsi)
8736 {
8737         struct i40e_mac_filter *f, *ftmp;
8738         struct i40e_veb *veb = NULL;
8739         struct i40e_pf *pf;
8740         u16 uplink_seid;
8741         int i, n;
8742
8743         pf = vsi->back;
8744
8745         /* release of a VEB-owner or last VSI is not allowed */
8746         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
8747                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
8748                          vsi->seid, vsi->uplink_seid);
8749                 return -ENODEV;
8750         }
8751         if (vsi == pf->vsi[pf->lan_vsi] &&
8752             !test_bit(__I40E_DOWN, &pf->state)) {
8753                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
8754                 return -ENODEV;
8755         }
8756
8757         uplink_seid = vsi->uplink_seid;
8758         if (vsi->type != I40E_VSI_SRIOV) {
8759                 if (vsi->netdev_registered) {
8760                         vsi->netdev_registered = false;
8761                         if (vsi->netdev) {
8762                                 /* results in a call to i40e_close() */
8763                                 unregister_netdev(vsi->netdev);
8764                         }
8765                 } else {
8766                         i40e_vsi_close(vsi);
8767                 }
8768                 i40e_vsi_disable_irq(vsi);
8769         }
8770
8771         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
8772                 i40e_del_filter(vsi, f->macaddr, f->vlan,
8773                                 f->is_vf, f->is_netdev);
8774         i40e_sync_vsi_filters(vsi);
8775
8776         i40e_vsi_delete(vsi);
8777         i40e_vsi_free_q_vectors(vsi);
8778         if (vsi->netdev) {
8779                 free_netdev(vsi->netdev);
8780                 vsi->netdev = NULL;
8781         }
8782         i40e_vsi_clear_rings(vsi);
8783         i40e_vsi_clear(vsi);
8784
8785         /* If this was the last thing on the VEB, except for the
8786          * controlling VSI, remove the VEB, which puts the controlling
8787          * VSI onto the next level down in the switch.
8788          *
8789          * Well, okay, there's one more exception here: don't remove
8790          * the orphan VEBs yet.  We'll wait for an explicit remove request
8791          * from up the network stack.
8792          */
8793         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
8794                 if (pf->vsi[i] &&
8795                     pf->vsi[i]->uplink_seid == uplink_seid &&
8796                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
8797                         n++;      /* count the VSIs */
8798                 }
8799         }
8800         for (i = 0; i < I40E_MAX_VEB; i++) {
8801                 if (!pf->veb[i])
8802                         continue;
8803                 if (pf->veb[i]->uplink_seid == uplink_seid)
8804                         n++;     /* count the VEBs */
8805                 if (pf->veb[i]->seid == uplink_seid)
8806                         veb = pf->veb[i];
8807         }
8808         if (n == 0 && veb && veb->uplink_seid != 0)
8809                 i40e_veb_release(veb);
8810
8811         return 0;
8812 }
8813
8814 /**
8815  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
8816  * @vsi: ptr to the VSI
8817  *
8818  * This should only be called after i40e_vsi_mem_alloc() which allocates the
8819  * corresponding SW VSI structure and initializes num_queue_pairs for the
8820  * newly allocated VSI.
8821  *
8822  * Returns 0 on success or negative on failure
8823  **/
8824 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
8825 {
8826         int ret = -ENOENT;
8827         struct i40e_pf *pf = vsi->back;
8828
8829         if (vsi->q_vectors[0]) {
8830                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
8831                          vsi->seid);
8832                 return -EEXIST;
8833         }
8834
8835         if (vsi->base_vector) {
8836                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
8837                          vsi->seid, vsi->base_vector);
8838                 return -EEXIST;
8839         }
8840
8841         ret = i40e_vsi_alloc_q_vectors(vsi);
8842         if (ret) {
8843                 dev_info(&pf->pdev->dev,
8844                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
8845                          vsi->num_q_vectors, vsi->seid, ret);
8846                 vsi->num_q_vectors = 0;
8847                 goto vector_setup_out;
8848         }
8849
8850         /* In Legacy mode, we do not have to get any other vector since we
8851          * piggyback on the misc/ICR0 for queue interrupts.
8852         */
8853         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
8854                 return ret;
8855         if (vsi->num_q_vectors)
8856                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
8857                                                  vsi->num_q_vectors, vsi->idx);
8858         if (vsi->base_vector < 0) {
8859                 dev_info(&pf->pdev->dev,
8860                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
8861                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
8862                 i40e_vsi_free_q_vectors(vsi);
8863                 ret = -ENOENT;
8864                 goto vector_setup_out;
8865         }
8866
8867 vector_setup_out:
8868         return ret;
8869 }
8870
8871 /**
8872  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
8873  * @vsi: pointer to the vsi.
8874  *
8875  * This re-allocates a vsi's queue resources.
8876  *
8877  * Returns pointer to the successfully allocated and configured VSI sw struct
8878  * on success, otherwise returns NULL on failure.
8879  **/
8880 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
8881 {
8882         struct i40e_pf *pf = vsi->back;
8883         u8 enabled_tc;
8884         int ret;
8885
8886         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
8887         i40e_vsi_clear_rings(vsi);
8888
8889         i40e_vsi_free_arrays(vsi, false);
8890         i40e_set_num_rings_in_vsi(vsi);
8891         ret = i40e_vsi_alloc_arrays(vsi, false);
8892         if (ret)
8893                 goto err_vsi;
8894
8895         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
8896         if (ret < 0) {
8897                 dev_info(&pf->pdev->dev,
8898                          "failed to get tracking for %d queues for VSI %d err %d\n",
8899                          vsi->alloc_queue_pairs, vsi->seid, ret);
8900                 goto err_vsi;
8901         }
8902         vsi->base_queue = ret;
8903
8904         /* Update the FW view of the VSI. Force a reset of TC and queue
8905          * layout configurations.
8906          */
8907         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
8908         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
8909         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
8910         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
8911
8912         /* assign it some queues */
8913         ret = i40e_alloc_rings(vsi);
8914         if (ret)
8915                 goto err_rings;
8916
8917         /* map all of the rings to the q_vectors */
8918         i40e_vsi_map_rings_to_vectors(vsi);
8919         return vsi;
8920
8921 err_rings:
8922         i40e_vsi_free_q_vectors(vsi);
8923         if (vsi->netdev_registered) {
8924                 vsi->netdev_registered = false;
8925                 unregister_netdev(vsi->netdev);
8926                 free_netdev(vsi->netdev);
8927                 vsi->netdev = NULL;
8928         }
8929         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
8930 err_vsi:
8931         i40e_vsi_clear(vsi);
8932         return NULL;
8933 }
8934
8935 /**
8936  * i40e_vsi_setup - Set up a VSI by a given type
8937  * @pf: board private structure
8938  * @type: VSI type
8939  * @uplink_seid: the switch element to link to
8940  * @param1: usage depends upon VSI type. For VF types, indicates VF id
8941  *
8942  * This allocates the sw VSI structure and its queue resources, then add a VSI
8943  * to the identified VEB.
8944  *
8945  * Returns pointer to the successfully allocated and configure VSI sw struct on
8946  * success, otherwise returns NULL on failure.
8947  **/
8948 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
8949                                 u16 uplink_seid, u32 param1)
8950 {
8951         struct i40e_vsi *vsi = NULL;
8952         struct i40e_veb *veb = NULL;
8953         int ret, i;
8954         int v_idx;
8955
8956         /* The requested uplink_seid must be either
8957          *     - the PF's port seid
8958          *              no VEB is needed because this is the PF
8959          *              or this is a Flow Director special case VSI
8960          *     - seid of an existing VEB
8961          *     - seid of a VSI that owns an existing VEB
8962          *     - seid of a VSI that doesn't own a VEB
8963          *              a new VEB is created and the VSI becomes the owner
8964          *     - seid of the PF VSI, which is what creates the first VEB
8965          *              this is a special case of the previous
8966          *
8967          * Find which uplink_seid we were given and create a new VEB if needed
8968          */
8969         for (i = 0; i < I40E_MAX_VEB; i++) {
8970                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
8971                         veb = pf->veb[i];
8972                         break;
8973                 }
8974         }
8975
8976         if (!veb && uplink_seid != pf->mac_seid) {
8977
8978                 for (i = 0; i < pf->num_alloc_vsi; i++) {
8979                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
8980                                 vsi = pf->vsi[i];
8981                                 break;
8982                         }
8983                 }
8984                 if (!vsi) {
8985                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
8986                                  uplink_seid);
8987                         return NULL;
8988                 }
8989
8990                 if (vsi->uplink_seid == pf->mac_seid)
8991                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
8992                                              vsi->tc_config.enabled_tc);
8993                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
8994                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8995                                              vsi->tc_config.enabled_tc);
8996                 if (veb) {
8997                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
8998                                 dev_info(&vsi->back->pdev->dev,
8999                                          "%s: New VSI creation error, uplink seid of LAN VSI expected.\n",
9000                                          __func__);
9001                                 return NULL;
9002                         }
9003                         /* We come up by default in VEPA mode if SRIOV is not
9004                          * already enabled, in which case we can't force VEPA
9005                          * mode.
9006                          */
9007                         if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
9008                                 veb->bridge_mode = BRIDGE_MODE_VEPA;
9009                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
9010                         }
9011                         i40e_config_bridge_mode(veb);
9012                 }
9013                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9014                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9015                                 veb = pf->veb[i];
9016                 }
9017                 if (!veb) {
9018                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
9019                         return NULL;
9020                 }
9021
9022                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9023                 uplink_seid = veb->seid;
9024         }
9025
9026         /* get vsi sw struct */
9027         v_idx = i40e_vsi_mem_alloc(pf, type);
9028         if (v_idx < 0)
9029                 goto err_alloc;
9030         vsi = pf->vsi[v_idx];
9031         if (!vsi)
9032                 goto err_alloc;
9033         vsi->type = type;
9034         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
9035
9036         if (type == I40E_VSI_MAIN)
9037                 pf->lan_vsi = v_idx;
9038         else if (type == I40E_VSI_SRIOV)
9039                 vsi->vf_id = param1;
9040         /* assign it some queues */
9041         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
9042                                 vsi->idx);
9043         if (ret < 0) {
9044                 dev_info(&pf->pdev->dev,
9045                          "failed to get tracking for %d queues for VSI %d err=%d\n",
9046                          vsi->alloc_queue_pairs, vsi->seid, ret);
9047                 goto err_vsi;
9048         }
9049         vsi->base_queue = ret;
9050
9051         /* get a VSI from the hardware */
9052         vsi->uplink_seid = uplink_seid;
9053         ret = i40e_add_vsi(vsi);
9054         if (ret)
9055                 goto err_vsi;
9056
9057         switch (vsi->type) {
9058         /* setup the netdev if needed */
9059         case I40E_VSI_MAIN:
9060         case I40E_VSI_VMDQ2:
9061         case I40E_VSI_FCOE:
9062                 ret = i40e_config_netdev(vsi);
9063                 if (ret)
9064                         goto err_netdev;
9065                 ret = register_netdev(vsi->netdev);
9066                 if (ret)
9067                         goto err_netdev;
9068                 vsi->netdev_registered = true;
9069                 netif_carrier_off(vsi->netdev);
9070 #ifdef CONFIG_I40E_DCB
9071                 /* Setup DCB netlink interface */
9072                 i40e_dcbnl_setup(vsi);
9073 #endif /* CONFIG_I40E_DCB */
9074                 /* fall through */
9075
9076         case I40E_VSI_FDIR:
9077                 /* set up vectors and rings if needed */
9078                 ret = i40e_vsi_setup_vectors(vsi);
9079                 if (ret)
9080                         goto err_msix;
9081
9082                 ret = i40e_alloc_rings(vsi);
9083                 if (ret)
9084                         goto err_rings;
9085
9086                 /* map all of the rings to the q_vectors */
9087                 i40e_vsi_map_rings_to_vectors(vsi);
9088
9089                 i40e_vsi_reset_stats(vsi);
9090                 break;
9091
9092         default:
9093                 /* no netdev or rings for the other VSI types */
9094                 break;
9095         }
9096
9097         if ((pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) &&
9098             (vsi->type == I40E_VSI_VMDQ2)) {
9099                 ret = i40e_vsi_config_rss(vsi);
9100         }
9101         return vsi;
9102
9103 err_rings:
9104         i40e_vsi_free_q_vectors(vsi);
9105 err_msix:
9106         if (vsi->netdev_registered) {
9107                 vsi->netdev_registered = false;
9108                 unregister_netdev(vsi->netdev);
9109                 free_netdev(vsi->netdev);
9110                 vsi->netdev = NULL;
9111         }
9112 err_netdev:
9113         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9114 err_vsi:
9115         i40e_vsi_clear(vsi);
9116 err_alloc:
9117         return NULL;
9118 }
9119
9120 /**
9121  * i40e_veb_get_bw_info - Query VEB BW information
9122  * @veb: the veb to query
9123  *
9124  * Query the Tx scheduler BW configuration data for given VEB
9125  **/
9126 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
9127 {
9128         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
9129         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
9130         struct i40e_pf *pf = veb->pf;
9131         struct i40e_hw *hw = &pf->hw;
9132         u32 tc_bw_max;
9133         int ret = 0;
9134         int i;
9135
9136         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
9137                                                   &bw_data, NULL);
9138         if (ret) {
9139                 dev_info(&pf->pdev->dev,
9140                          "query veb bw config failed, err %s aq_err %s\n",
9141                          i40e_stat_str(&pf->hw, ret),
9142                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9143                 goto out;
9144         }
9145
9146         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
9147                                                    &ets_data, NULL);
9148         if (ret) {
9149                 dev_info(&pf->pdev->dev,
9150                          "query veb bw ets config failed, err %s aq_err %s\n",
9151                          i40e_stat_str(&pf->hw, ret),
9152                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9153                 goto out;
9154         }
9155
9156         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
9157         veb->bw_max_quanta = ets_data.tc_bw_max;
9158         veb->is_abs_credits = bw_data.absolute_credits_enable;
9159         veb->enabled_tc = ets_data.tc_valid_bits;
9160         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
9161                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
9162         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
9163                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
9164                 veb->bw_tc_limit_credits[i] =
9165                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
9166                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
9167         }
9168
9169 out:
9170         return ret;
9171 }
9172
9173 /**
9174  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
9175  * @pf: board private structure
9176  *
9177  * On error: returns error code (negative)
9178  * On success: returns vsi index in PF (positive)
9179  **/
9180 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
9181 {
9182         int ret = -ENOENT;
9183         struct i40e_veb *veb;
9184         int i;
9185
9186         /* Need to protect the allocation of switch elements at the PF level */
9187         mutex_lock(&pf->switch_mutex);
9188
9189         /* VEB list may be fragmented if VEB creation/destruction has
9190          * been happening.  We can afford to do a quick scan to look
9191          * for any free slots in the list.
9192          *
9193          * find next empty veb slot, looping back around if necessary
9194          */
9195         i = 0;
9196         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
9197                 i++;
9198         if (i >= I40E_MAX_VEB) {
9199                 ret = -ENOMEM;
9200                 goto err_alloc_veb;  /* out of VEB slots! */
9201         }
9202
9203         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
9204         if (!veb) {
9205                 ret = -ENOMEM;
9206                 goto err_alloc_veb;
9207         }
9208         veb->pf = pf;
9209         veb->idx = i;
9210         veb->enabled_tc = 1;
9211
9212         pf->veb[i] = veb;
9213         ret = i;
9214 err_alloc_veb:
9215         mutex_unlock(&pf->switch_mutex);
9216         return ret;
9217 }
9218
9219 /**
9220  * i40e_switch_branch_release - Delete a branch of the switch tree
9221  * @branch: where to start deleting
9222  *
9223  * This uses recursion to find the tips of the branch to be
9224  * removed, deleting until we get back to and can delete this VEB.
9225  **/
9226 static void i40e_switch_branch_release(struct i40e_veb *branch)
9227 {
9228         struct i40e_pf *pf = branch->pf;
9229         u16 branch_seid = branch->seid;
9230         u16 veb_idx = branch->idx;
9231         int i;
9232
9233         /* release any VEBs on this VEB - RECURSION */
9234         for (i = 0; i < I40E_MAX_VEB; i++) {
9235                 if (!pf->veb[i])
9236                         continue;
9237                 if (pf->veb[i]->uplink_seid == branch->seid)
9238                         i40e_switch_branch_release(pf->veb[i]);
9239         }
9240
9241         /* Release the VSIs on this VEB, but not the owner VSI.
9242          *
9243          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
9244          *       the VEB itself, so don't use (*branch) after this loop.
9245          */
9246         for (i = 0; i < pf->num_alloc_vsi; i++) {
9247                 if (!pf->vsi[i])
9248                         continue;
9249                 if (pf->vsi[i]->uplink_seid == branch_seid &&
9250                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9251                         i40e_vsi_release(pf->vsi[i]);
9252                 }
9253         }
9254
9255         /* There's one corner case where the VEB might not have been
9256          * removed, so double check it here and remove it if needed.
9257          * This case happens if the veb was created from the debugfs
9258          * commands and no VSIs were added to it.
9259          */
9260         if (pf->veb[veb_idx])
9261                 i40e_veb_release(pf->veb[veb_idx]);
9262 }
9263
9264 /**
9265  * i40e_veb_clear - remove veb struct
9266  * @veb: the veb to remove
9267  **/
9268 static void i40e_veb_clear(struct i40e_veb *veb)
9269 {
9270         if (!veb)
9271                 return;
9272
9273         if (veb->pf) {
9274                 struct i40e_pf *pf = veb->pf;
9275
9276                 mutex_lock(&pf->switch_mutex);
9277                 if (pf->veb[veb->idx] == veb)
9278                         pf->veb[veb->idx] = NULL;
9279                 mutex_unlock(&pf->switch_mutex);
9280         }
9281
9282         kfree(veb);
9283 }
9284
9285 /**
9286  * i40e_veb_release - Delete a VEB and free its resources
9287  * @veb: the VEB being removed
9288  **/
9289 void i40e_veb_release(struct i40e_veb *veb)
9290 {
9291         struct i40e_vsi *vsi = NULL;
9292         struct i40e_pf *pf;
9293         int i, n = 0;
9294
9295         pf = veb->pf;
9296
9297         /* find the remaining VSI and check for extras */
9298         for (i = 0; i < pf->num_alloc_vsi; i++) {
9299                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
9300                         n++;
9301                         vsi = pf->vsi[i];
9302                 }
9303         }
9304         if (n != 1) {
9305                 dev_info(&pf->pdev->dev,
9306                          "can't remove VEB %d with %d VSIs left\n",
9307                          veb->seid, n);
9308                 return;
9309         }
9310
9311         /* move the remaining VSI to uplink veb */
9312         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
9313         if (veb->uplink_seid) {
9314                 vsi->uplink_seid = veb->uplink_seid;
9315                 if (veb->uplink_seid == pf->mac_seid)
9316                         vsi->veb_idx = I40E_NO_VEB;
9317                 else
9318                         vsi->veb_idx = veb->veb_idx;
9319         } else {
9320                 /* floating VEB */
9321                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
9322                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
9323         }
9324
9325         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
9326         i40e_veb_clear(veb);
9327 }
9328
9329 /**
9330  * i40e_add_veb - create the VEB in the switch
9331  * @veb: the VEB to be instantiated
9332  * @vsi: the controlling VSI
9333  **/
9334 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
9335 {
9336         struct i40e_pf *pf = veb->pf;
9337         bool is_default = veb->pf->cur_promisc;
9338         bool is_cloud = false;
9339         int ret;
9340
9341         /* get a VEB from the hardware */
9342         ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid,
9343                               veb->enabled_tc, is_default,
9344                               is_cloud, &veb->seid, NULL);
9345         if (ret) {
9346                 dev_info(&pf->pdev->dev,
9347                          "couldn't add VEB, err %s aq_err %s\n",
9348                          i40e_stat_str(&pf->hw, ret),
9349                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9350                 return -EPERM;
9351         }
9352
9353         /* get statistics counter */
9354         ret = i40e_aq_get_veb_parameters(&pf->hw, veb->seid, NULL, NULL,
9355                                          &veb->stats_idx, NULL, NULL, NULL);
9356         if (ret) {
9357                 dev_info(&pf->pdev->dev,
9358                          "couldn't get VEB statistics idx, err %s aq_err %s\n",
9359                          i40e_stat_str(&pf->hw, ret),
9360                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9361                 return -EPERM;
9362         }
9363         ret = i40e_veb_get_bw_info(veb);
9364         if (ret) {
9365                 dev_info(&pf->pdev->dev,
9366                          "couldn't get VEB bw info, err %s aq_err %s\n",
9367                          i40e_stat_str(&pf->hw, ret),
9368                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9369                 i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
9370                 return -ENOENT;
9371         }
9372
9373         vsi->uplink_seid = veb->seid;
9374         vsi->veb_idx = veb->idx;
9375         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9376
9377         return 0;
9378 }
9379
9380 /**
9381  * i40e_veb_setup - Set up a VEB
9382  * @pf: board private structure
9383  * @flags: VEB setup flags
9384  * @uplink_seid: the switch element to link to
9385  * @vsi_seid: the initial VSI seid
9386  * @enabled_tc: Enabled TC bit-map
9387  *
9388  * This allocates the sw VEB structure and links it into the switch
9389  * It is possible and legal for this to be a duplicate of an already
9390  * existing VEB.  It is also possible for both uplink and vsi seids
9391  * to be zero, in order to create a floating VEB.
9392  *
9393  * Returns pointer to the successfully allocated VEB sw struct on
9394  * success, otherwise returns NULL on failure.
9395  **/
9396 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
9397                                 u16 uplink_seid, u16 vsi_seid,
9398                                 u8 enabled_tc)
9399 {
9400         struct i40e_veb *veb, *uplink_veb = NULL;
9401         int vsi_idx, veb_idx;
9402         int ret;
9403
9404         /* if one seid is 0, the other must be 0 to create a floating relay */
9405         if ((uplink_seid == 0 || vsi_seid == 0) &&
9406             (uplink_seid + vsi_seid != 0)) {
9407                 dev_info(&pf->pdev->dev,
9408                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
9409                          uplink_seid, vsi_seid);
9410                 return NULL;
9411         }
9412
9413         /* make sure there is such a vsi and uplink */
9414         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
9415                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
9416                         break;
9417         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
9418                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
9419                          vsi_seid);
9420                 return NULL;
9421         }
9422
9423         if (uplink_seid && uplink_seid != pf->mac_seid) {
9424                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
9425                         if (pf->veb[veb_idx] &&
9426                             pf->veb[veb_idx]->seid == uplink_seid) {
9427                                 uplink_veb = pf->veb[veb_idx];
9428                                 break;
9429                         }
9430                 }
9431                 if (!uplink_veb) {
9432                         dev_info(&pf->pdev->dev,
9433                                  "uplink seid %d not found\n", uplink_seid);
9434                         return NULL;
9435                 }
9436         }
9437
9438         /* get veb sw struct */
9439         veb_idx = i40e_veb_mem_alloc(pf);
9440         if (veb_idx < 0)
9441                 goto err_alloc;
9442         veb = pf->veb[veb_idx];
9443         veb->flags = flags;
9444         veb->uplink_seid = uplink_seid;
9445         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
9446         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
9447
9448         /* create the VEB in the switch */
9449         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
9450         if (ret)
9451                 goto err_veb;
9452         if (vsi_idx == pf->lan_vsi)
9453                 pf->lan_veb = veb->idx;
9454
9455         return veb;
9456
9457 err_veb:
9458         i40e_veb_clear(veb);
9459 err_alloc:
9460         return NULL;
9461 }
9462
9463 /**
9464  * i40e_setup_pf_switch_element - set PF vars based on switch type
9465  * @pf: board private structure
9466  * @ele: element we are building info from
9467  * @num_reported: total number of elements
9468  * @printconfig: should we print the contents
9469  *
9470  * helper function to assist in extracting a few useful SEID values.
9471  **/
9472 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
9473                                 struct i40e_aqc_switch_config_element_resp *ele,
9474                                 u16 num_reported, bool printconfig)
9475 {
9476         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
9477         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
9478         u8 element_type = ele->element_type;
9479         u16 seid = le16_to_cpu(ele->seid);
9480
9481         if (printconfig)
9482                 dev_info(&pf->pdev->dev,
9483                          "type=%d seid=%d uplink=%d downlink=%d\n",
9484                          element_type, seid, uplink_seid, downlink_seid);
9485
9486         switch (element_type) {
9487         case I40E_SWITCH_ELEMENT_TYPE_MAC:
9488                 pf->mac_seid = seid;
9489                 break;
9490         case I40E_SWITCH_ELEMENT_TYPE_VEB:
9491                 /* Main VEB? */
9492                 if (uplink_seid != pf->mac_seid)
9493                         break;
9494                 if (pf->lan_veb == I40E_NO_VEB) {
9495                         int v;
9496
9497                         /* find existing or else empty VEB */
9498                         for (v = 0; v < I40E_MAX_VEB; v++) {
9499                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
9500                                         pf->lan_veb = v;
9501                                         break;
9502                                 }
9503                         }
9504                         if (pf->lan_veb == I40E_NO_VEB) {
9505                                 v = i40e_veb_mem_alloc(pf);
9506                                 if (v < 0)
9507                                         break;
9508                                 pf->lan_veb = v;
9509                         }
9510                 }
9511
9512                 pf->veb[pf->lan_veb]->seid = seid;
9513                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
9514                 pf->veb[pf->lan_veb]->pf = pf;
9515                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
9516                 break;
9517         case I40E_SWITCH_ELEMENT_TYPE_VSI:
9518                 if (num_reported != 1)
9519                         break;
9520                 /* This is immediately after a reset so we can assume this is
9521                  * the PF's VSI
9522                  */
9523                 pf->mac_seid = uplink_seid;
9524                 pf->pf_seid = downlink_seid;
9525                 pf->main_vsi_seid = seid;
9526                 if (printconfig)
9527                         dev_info(&pf->pdev->dev,
9528                                  "pf_seid=%d main_vsi_seid=%d\n",
9529                                  pf->pf_seid, pf->main_vsi_seid);
9530                 break;
9531         case I40E_SWITCH_ELEMENT_TYPE_PF:
9532         case I40E_SWITCH_ELEMENT_TYPE_VF:
9533         case I40E_SWITCH_ELEMENT_TYPE_EMP:
9534         case I40E_SWITCH_ELEMENT_TYPE_BMC:
9535         case I40E_SWITCH_ELEMENT_TYPE_PE:
9536         case I40E_SWITCH_ELEMENT_TYPE_PA:
9537                 /* ignore these for now */
9538                 break;
9539         default:
9540                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
9541                          element_type, seid);
9542                 break;
9543         }
9544 }
9545
9546 /**
9547  * i40e_fetch_switch_configuration - Get switch config from firmware
9548  * @pf: board private structure
9549  * @printconfig: should we print the contents
9550  *
9551  * Get the current switch configuration from the device and
9552  * extract a few useful SEID values.
9553  **/
9554 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
9555 {
9556         struct i40e_aqc_get_switch_config_resp *sw_config;
9557         u16 next_seid = 0;
9558         int ret = 0;
9559         u8 *aq_buf;
9560         int i;
9561
9562         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
9563         if (!aq_buf)
9564                 return -ENOMEM;
9565
9566         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
9567         do {
9568                 u16 num_reported, num_total;
9569
9570                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
9571                                                 I40E_AQ_LARGE_BUF,
9572                                                 &next_seid, NULL);
9573                 if (ret) {
9574                         dev_info(&pf->pdev->dev,
9575                                  "get switch config failed err %s aq_err %s\n",
9576                                  i40e_stat_str(&pf->hw, ret),
9577                                  i40e_aq_str(&pf->hw,
9578                                              pf->hw.aq.asq_last_status));
9579                         kfree(aq_buf);
9580                         return -ENOENT;
9581                 }
9582
9583                 num_reported = le16_to_cpu(sw_config->header.num_reported);
9584                 num_total = le16_to_cpu(sw_config->header.num_total);
9585
9586                 if (printconfig)
9587                         dev_info(&pf->pdev->dev,
9588                                  "header: %d reported %d total\n",
9589                                  num_reported, num_total);
9590
9591                 for (i = 0; i < num_reported; i++) {
9592                         struct i40e_aqc_switch_config_element_resp *ele =
9593                                 &sw_config->element[i];
9594
9595                         i40e_setup_pf_switch_element(pf, ele, num_reported,
9596                                                      printconfig);
9597                 }
9598         } while (next_seid != 0);
9599
9600         kfree(aq_buf);
9601         return ret;
9602 }
9603
9604 /**
9605  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
9606  * @pf: board private structure
9607  * @reinit: if the Main VSI needs to re-initialized.
9608  *
9609  * Returns 0 on success, negative value on failure
9610  **/
9611 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
9612 {
9613         int ret;
9614
9615         /* find out what's out there already */
9616         ret = i40e_fetch_switch_configuration(pf, false);
9617         if (ret) {
9618                 dev_info(&pf->pdev->dev,
9619                          "couldn't fetch switch config, err %s aq_err %s\n",
9620                          i40e_stat_str(&pf->hw, ret),
9621                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9622                 return ret;
9623         }
9624         i40e_pf_reset_stats(pf);
9625
9626         /* first time setup */
9627         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
9628                 struct i40e_vsi *vsi = NULL;
9629                 u16 uplink_seid;
9630
9631                 /* Set up the PF VSI associated with the PF's main VSI
9632                  * that is already in the HW switch
9633                  */
9634                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
9635                         uplink_seid = pf->veb[pf->lan_veb]->seid;
9636                 else
9637                         uplink_seid = pf->mac_seid;
9638                 if (pf->lan_vsi == I40E_NO_VSI)
9639                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
9640                 else if (reinit)
9641                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
9642                 if (!vsi) {
9643                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
9644                         i40e_fdir_teardown(pf);
9645                         return -EAGAIN;
9646                 }
9647         } else {
9648                 /* force a reset of TC and queue layout configurations */
9649                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
9650                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
9651                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
9652                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
9653         }
9654         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
9655
9656         i40e_fdir_sb_setup(pf);
9657
9658         /* Setup static PF queue filter control settings */
9659         ret = i40e_setup_pf_filter_control(pf);
9660         if (ret) {
9661                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
9662                          ret);
9663                 /* Failure here should not stop continuing other steps */
9664         }
9665
9666         /* enable RSS in the HW, even for only one queue, as the stack can use
9667          * the hash
9668          */
9669         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
9670                 i40e_config_rss(pf);
9671
9672         /* fill in link information and enable LSE reporting */
9673         i40e_aq_get_link_info(&pf->hw, true, NULL, NULL);
9674         i40e_link_event(pf);
9675
9676         /* Initialize user-specific link properties */
9677         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
9678                                   I40E_AQ_AN_COMPLETED) ? true : false);
9679
9680         i40e_ptp_init(pf);
9681
9682         return ret;
9683 }
9684
9685 /**
9686  * i40e_determine_queue_usage - Work out queue distribution
9687  * @pf: board private structure
9688  **/
9689 static void i40e_determine_queue_usage(struct i40e_pf *pf)
9690 {
9691         int queues_left;
9692
9693         pf->num_lan_qps = 0;
9694 #ifdef I40E_FCOE
9695         pf->num_fcoe_qps = 0;
9696 #endif
9697
9698         /* Find the max queues to be put into basic use.  We'll always be
9699          * using TC0, whether or not DCB is running, and TC0 will get the
9700          * big RSS set.
9701          */
9702         queues_left = pf->hw.func_caps.num_tx_qp;
9703
9704         if ((queues_left == 1) ||
9705             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
9706                 /* one qp for PF, no queues for anything else */
9707                 queues_left = 0;
9708                 pf->rss_size = pf->num_lan_qps = 1;
9709
9710                 /* make sure all the fancies are disabled */
9711                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
9712 #ifdef I40E_FCOE
9713                                I40E_FLAG_FCOE_ENABLED   |
9714 #endif
9715                                I40E_FLAG_FD_SB_ENABLED  |
9716                                I40E_FLAG_FD_ATR_ENABLED |
9717                                I40E_FLAG_DCB_CAPABLE    |
9718                                I40E_FLAG_SRIOV_ENABLED  |
9719                                I40E_FLAG_VMDQ_ENABLED);
9720         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
9721                                   I40E_FLAG_FD_SB_ENABLED |
9722                                   I40E_FLAG_FD_ATR_ENABLED |
9723                                   I40E_FLAG_DCB_CAPABLE))) {
9724                 /* one qp for PF */
9725                 pf->rss_size = pf->num_lan_qps = 1;
9726                 queues_left -= pf->num_lan_qps;
9727
9728                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
9729 #ifdef I40E_FCOE
9730                                I40E_FLAG_FCOE_ENABLED   |
9731 #endif
9732                                I40E_FLAG_FD_SB_ENABLED  |
9733                                I40E_FLAG_FD_ATR_ENABLED |
9734                                I40E_FLAG_DCB_ENABLED    |
9735                                I40E_FLAG_VMDQ_ENABLED);
9736         } else {
9737                 /* Not enough queues for all TCs */
9738                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
9739                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
9740                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
9741                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
9742                 }
9743                 pf->num_lan_qps = max_t(int, pf->rss_size_max,
9744                                         num_online_cpus());
9745                 pf->num_lan_qps = min_t(int, pf->num_lan_qps,
9746                                         pf->hw.func_caps.num_tx_qp);
9747
9748                 queues_left -= pf->num_lan_qps;
9749         }
9750
9751 #ifdef I40E_FCOE
9752         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
9753                 if (I40E_DEFAULT_FCOE <= queues_left) {
9754                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
9755                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
9756                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
9757                 } else {
9758                         pf->num_fcoe_qps = 0;
9759                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
9760                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
9761                 }
9762
9763                 queues_left -= pf->num_fcoe_qps;
9764         }
9765
9766 #endif
9767         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
9768                 if (queues_left > 1) {
9769                         queues_left -= 1; /* save 1 queue for FD */
9770                 } else {
9771                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
9772                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
9773                 }
9774         }
9775
9776         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
9777             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
9778                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
9779                                         (queues_left / pf->num_vf_qps));
9780                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
9781         }
9782
9783         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
9784             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
9785                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
9786                                           (queues_left / pf->num_vmdq_qps));
9787                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
9788         }
9789
9790         pf->queues_left = queues_left;
9791 #ifdef I40E_FCOE
9792         dev_info(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
9793 #endif
9794 }
9795
9796 /**
9797  * i40e_setup_pf_filter_control - Setup PF static filter control
9798  * @pf: PF to be setup
9799  *
9800  * i40e_setup_pf_filter_control sets up a PF's initial filter control
9801  * settings. If PE/FCoE are enabled then it will also set the per PF
9802  * based filter sizes required for them. It also enables Flow director,
9803  * ethertype and macvlan type filter settings for the pf.
9804  *
9805  * Returns 0 on success, negative on failure
9806  **/
9807 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
9808 {
9809         struct i40e_filter_control_settings *settings = &pf->filter_settings;
9810
9811         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
9812
9813         /* Flow Director is enabled */
9814         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
9815                 settings->enable_fdir = true;
9816
9817         /* Ethtype and MACVLAN filters enabled for PF */
9818         settings->enable_ethtype = true;
9819         settings->enable_macvlan = true;
9820
9821         if (i40e_set_filter_control(&pf->hw, settings))
9822                 return -ENOENT;
9823
9824         return 0;
9825 }
9826
9827 #define INFO_STRING_LEN 255
9828 static void i40e_print_features(struct i40e_pf *pf)
9829 {
9830         struct i40e_hw *hw = &pf->hw;
9831         char *buf, *string;
9832
9833         string = kzalloc(INFO_STRING_LEN, GFP_KERNEL);
9834         if (!string) {
9835                 dev_err(&pf->pdev->dev, "Features string allocation failed\n");
9836                 return;
9837         }
9838
9839         buf = string;
9840
9841         buf += sprintf(string, "Features: PF-id[%d] ", hw->pf_id);
9842 #ifdef CONFIG_PCI_IOV
9843         buf += sprintf(buf, "VFs: %d ", pf->num_req_vfs);
9844 #endif
9845         buf += sprintf(buf, "VSIs: %d QP: %d RX: %s ",
9846                        pf->hw.func_caps.num_vsis,
9847                        pf->vsi[pf->lan_vsi]->num_queue_pairs,
9848                        pf->flags & I40E_FLAG_RX_PS_ENABLED ? "PS" : "1BUF");
9849
9850         if (pf->flags & I40E_FLAG_RSS_ENABLED)
9851                 buf += sprintf(buf, "RSS ");
9852         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
9853                 buf += sprintf(buf, "FD_ATR ");
9854         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
9855                 buf += sprintf(buf, "FD_SB ");
9856                 buf += sprintf(buf, "NTUPLE ");
9857         }
9858         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
9859                 buf += sprintf(buf, "DCB ");
9860         if (pf->flags & I40E_FLAG_PTP)
9861                 buf += sprintf(buf, "PTP ");
9862 #ifdef I40E_FCOE
9863         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
9864                 buf += sprintf(buf, "FCOE ");
9865 #endif
9866
9867         BUG_ON(buf > (string + INFO_STRING_LEN));
9868         dev_info(&pf->pdev->dev, "%s\n", string);
9869         kfree(string);
9870 }
9871
9872 /**
9873  * i40e_probe - Device initialization routine
9874  * @pdev: PCI device information struct
9875  * @ent: entry in i40e_pci_tbl
9876  *
9877  * i40e_probe initializes a PF identified by a pci_dev structure.
9878  * The OS initialization, configuring of the PF private structure,
9879  * and a hardware reset occur.
9880  *
9881  * Returns 0 on success, negative on failure
9882  **/
9883 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
9884 {
9885         struct i40e_aq_get_phy_abilities_resp abilities;
9886         unsigned long ioremap_len;
9887         struct i40e_pf *pf;
9888         struct i40e_hw *hw;
9889         static u16 pfs_found;
9890         u16 link_status;
9891         int err = 0;
9892         u32 len;
9893         u32 i;
9894
9895         err = pci_enable_device_mem(pdev);
9896         if (err)
9897                 return err;
9898
9899         /* set up for high or low dma */
9900         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
9901         if (err) {
9902                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
9903                 if (err) {
9904                         dev_err(&pdev->dev,
9905                                 "DMA configuration failed: 0x%x\n", err);
9906                         goto err_dma;
9907                 }
9908         }
9909
9910         /* set up pci connections */
9911         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
9912                                            IORESOURCE_MEM), i40e_driver_name);
9913         if (err) {
9914                 dev_info(&pdev->dev,
9915                          "pci_request_selected_regions failed %d\n", err);
9916                 goto err_pci_reg;
9917         }
9918
9919         pci_enable_pcie_error_reporting(pdev);
9920         pci_set_master(pdev);
9921
9922         /* Now that we have a PCI connection, we need to do the
9923          * low level device setup.  This is primarily setting up
9924          * the Admin Queue structures and then querying for the
9925          * device's current profile information.
9926          */
9927         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
9928         if (!pf) {
9929                 err = -ENOMEM;
9930                 goto err_pf_alloc;
9931         }
9932         pf->next_vsi = 0;
9933         pf->pdev = pdev;
9934         set_bit(__I40E_DOWN, &pf->state);
9935
9936         hw = &pf->hw;
9937         hw->back = pf;
9938
9939         ioremap_len = min_t(unsigned long, pci_resource_len(pdev, 0),
9940                             I40E_MAX_CSR_SPACE);
9941
9942         hw->hw_addr = ioremap(pci_resource_start(pdev, 0), ioremap_len);
9943         if (!hw->hw_addr) {
9944                 err = -EIO;
9945                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
9946                          (unsigned int)pci_resource_start(pdev, 0),
9947                          (unsigned int)pci_resource_len(pdev, 0), err);
9948                 goto err_ioremap;
9949         }
9950         hw->vendor_id = pdev->vendor;
9951         hw->device_id = pdev->device;
9952         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
9953         hw->subsystem_vendor_id = pdev->subsystem_vendor;
9954         hw->subsystem_device_id = pdev->subsystem_device;
9955         hw->bus.device = PCI_SLOT(pdev->devfn);
9956         hw->bus.func = PCI_FUNC(pdev->devfn);
9957         pf->instance = pfs_found;
9958
9959         if (debug != -1) {
9960                 pf->msg_enable = pf->hw.debug_mask;
9961                 pf->msg_enable = debug;
9962         }
9963
9964         /* do a special CORER for clearing PXE mode once at init */
9965         if (hw->revision_id == 0 &&
9966             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
9967                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
9968                 i40e_flush(hw);
9969                 msleep(200);
9970                 pf->corer_count++;
9971
9972                 i40e_clear_pxe_mode(hw);
9973         }
9974
9975         /* Reset here to make sure all is clean and to define PF 'n' */
9976         i40e_clear_hw(hw);
9977         err = i40e_pf_reset(hw);
9978         if (err) {
9979                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
9980                 goto err_pf_reset;
9981         }
9982         pf->pfr_count++;
9983
9984         hw->aq.num_arq_entries = I40E_AQ_LEN;
9985         hw->aq.num_asq_entries = I40E_AQ_LEN;
9986         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
9987         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
9988         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
9989
9990         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
9991                  "%s-%s:misc",
9992                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
9993
9994         err = i40e_init_shared_code(hw);
9995         if (err) {
9996                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
9997                          err);
9998                 goto err_pf_reset;
9999         }
10000
10001         /* set up a default setting for link flow control */
10002         pf->hw.fc.requested_mode = I40E_FC_NONE;
10003
10004         err = i40e_init_adminq(hw);
10005         dev_info(&pdev->dev, "%s\n", i40e_fw_version_str(hw));
10006         if (err) {
10007                 dev_info(&pdev->dev,
10008                          "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");
10009                 goto err_pf_reset;
10010         }
10011
10012         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
10013             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
10014                 dev_info(&pdev->dev,
10015                          "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");
10016         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
10017                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
10018                 dev_info(&pdev->dev,
10019                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
10020
10021         i40e_verify_eeprom(pf);
10022
10023         /* Rev 0 hardware was never productized */
10024         if (hw->revision_id < 1)
10025                 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");
10026
10027         i40e_clear_pxe_mode(hw);
10028         err = i40e_get_capabilities(pf);
10029         if (err)
10030                 goto err_adminq_setup;
10031
10032         err = i40e_sw_init(pf);
10033         if (err) {
10034                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
10035                 goto err_sw_init;
10036         }
10037
10038         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
10039                                 hw->func_caps.num_rx_qp,
10040                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
10041         if (err) {
10042                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
10043                 goto err_init_lan_hmc;
10044         }
10045
10046         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
10047         if (err) {
10048                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
10049                 err = -ENOENT;
10050                 goto err_configure_lan_hmc;
10051         }
10052
10053         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
10054          * Ignore error return codes because if it was already disabled via
10055          * hardware settings this will fail
10056          */
10057         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
10058             (pf->hw.aq.fw_maj_ver < 4)) {
10059                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
10060                 i40e_aq_stop_lldp(hw, true, NULL);
10061         }
10062
10063         i40e_get_mac_addr(hw, hw->mac.addr);
10064         if (!is_valid_ether_addr(hw->mac.addr)) {
10065                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
10066                 err = -EIO;
10067                 goto err_mac_addr;
10068         }
10069         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
10070         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
10071         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
10072         if (is_valid_ether_addr(hw->mac.port_addr))
10073                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
10074 #ifdef I40E_FCOE
10075         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
10076         if (err)
10077                 dev_info(&pdev->dev,
10078                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
10079         if (!is_valid_ether_addr(hw->mac.san_addr)) {
10080                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
10081                          hw->mac.san_addr);
10082                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
10083         }
10084         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
10085 #endif /* I40E_FCOE */
10086
10087         pci_set_drvdata(pdev, pf);
10088         pci_save_state(pdev);
10089 #ifdef CONFIG_I40E_DCB
10090         err = i40e_init_pf_dcb(pf);
10091         if (err) {
10092                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
10093                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10094                 /* Continue without DCB enabled */
10095         }
10096 #endif /* CONFIG_I40E_DCB */
10097
10098         /* set up periodic task facility */
10099         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
10100         pf->service_timer_period = HZ;
10101
10102         INIT_WORK(&pf->service_task, i40e_service_task);
10103         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
10104         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
10105         pf->link_check_timeout = jiffies;
10106
10107         /* WoL defaults to disabled */
10108         pf->wol_en = false;
10109         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
10110
10111         /* set up the main switch operations */
10112         i40e_determine_queue_usage(pf);
10113         err = i40e_init_interrupt_scheme(pf);
10114         if (err)
10115                 goto err_switch_setup;
10116
10117         /* The number of VSIs reported by the FW is the minimum guaranteed
10118          * to us; HW supports far more and we share the remaining pool with
10119          * the other PFs. We allocate space for more than the guarantee with
10120          * the understanding that we might not get them all later.
10121          */
10122         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
10123                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
10124         else
10125                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
10126
10127         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
10128         len = sizeof(struct i40e_vsi *) * pf->num_alloc_vsi;
10129         pf->vsi = kzalloc(len, GFP_KERNEL);
10130         if (!pf->vsi) {
10131                 err = -ENOMEM;
10132                 goto err_switch_setup;
10133         }
10134
10135 #ifdef CONFIG_PCI_IOV
10136         /* prep for VF support */
10137         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10138             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10139             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10140                 if (pci_num_vf(pdev))
10141                         pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
10142         }
10143 #endif
10144         err = i40e_setup_pf_switch(pf, false);
10145         if (err) {
10146                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
10147                 goto err_vsis;
10148         }
10149         /* if FDIR VSI was set up, start it now */
10150         for (i = 0; i < pf->num_alloc_vsi; i++) {
10151                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
10152                         i40e_vsi_open(pf->vsi[i]);
10153                         break;
10154                 }
10155         }
10156
10157         /* driver is only interested in link up/down and module qualification
10158          * reports from firmware
10159          */
10160         err = i40e_aq_set_phy_int_mask(&pf->hw,
10161                                        I40E_AQ_EVENT_LINK_UPDOWN |
10162                                        I40E_AQ_EVENT_MODULE_QUAL_FAIL, NULL);
10163         if (err)
10164                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
10165                          i40e_stat_str(&pf->hw, err),
10166                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10167
10168         if (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
10169             (pf->hw.aq.fw_maj_ver < 4)) {
10170                 msleep(75);
10171                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
10172                 if (err)
10173                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
10174                                  i40e_stat_str(&pf->hw, err),
10175                                  i40e_aq_str(&pf->hw,
10176                                              pf->hw.aq.asq_last_status));
10177         }
10178         /* The main driver is (mostly) up and happy. We need to set this state
10179          * before setting up the misc vector or we get a race and the vector
10180          * ends up disabled forever.
10181          */
10182         clear_bit(__I40E_DOWN, &pf->state);
10183
10184         /* In case of MSIX we are going to setup the misc vector right here
10185          * to handle admin queue events etc. In case of legacy and MSI
10186          * the misc functionality and queue processing is combined in
10187          * the same vector and that gets setup at open.
10188          */
10189         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
10190                 err = i40e_setup_misc_vector(pf);
10191                 if (err) {
10192                         dev_info(&pdev->dev,
10193                                  "setup of misc vector failed: %d\n", err);
10194                         goto err_vsis;
10195                 }
10196         }
10197
10198 #ifdef CONFIG_PCI_IOV
10199         /* prep for VF support */
10200         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10201             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10202             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10203                 u32 val;
10204
10205                 /* disable link interrupts for VFs */
10206                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
10207                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
10208                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
10209                 i40e_flush(hw);
10210
10211                 if (pci_num_vf(pdev)) {
10212                         dev_info(&pdev->dev,
10213                                  "Active VFs found, allocating resources.\n");
10214                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
10215                         if (err)
10216                                 dev_info(&pdev->dev,
10217                                          "Error %d allocating resources for existing VFs\n",
10218                                          err);
10219                 }
10220         }
10221 #endif /* CONFIG_PCI_IOV */
10222
10223         pfs_found++;
10224
10225         i40e_dbg_pf_init(pf);
10226
10227         /* tell the firmware that we're starting */
10228         i40e_send_version(pf);
10229
10230         /* since everything's happy, start the service_task timer */
10231         mod_timer(&pf->service_timer,
10232                   round_jiffies(jiffies + pf->service_timer_period));
10233
10234 #ifdef I40E_FCOE
10235         /* create FCoE interface */
10236         i40e_fcoe_vsi_setup(pf);
10237
10238 #endif
10239         /* Get the negotiated link width and speed from PCI config space */
10240         pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA, &link_status);
10241
10242         i40e_set_pci_config_data(hw, link_status);
10243
10244         dev_info(&pdev->dev, "PCI-Express: %s %s\n",
10245                 (hw->bus.speed == i40e_bus_speed_8000 ? "Speed 8.0GT/s" :
10246                  hw->bus.speed == i40e_bus_speed_5000 ? "Speed 5.0GT/s" :
10247                  hw->bus.speed == i40e_bus_speed_2500 ? "Speed 2.5GT/s" :
10248                  "Unknown"),
10249                 (hw->bus.width == i40e_bus_width_pcie_x8 ? "Width x8" :
10250                  hw->bus.width == i40e_bus_width_pcie_x4 ? "Width x4" :
10251                  hw->bus.width == i40e_bus_width_pcie_x2 ? "Width x2" :
10252                  hw->bus.width == i40e_bus_width_pcie_x1 ? "Width x1" :
10253                  "Unknown"));
10254
10255         if (hw->bus.width < i40e_bus_width_pcie_x8 ||
10256             hw->bus.speed < i40e_bus_speed_8000) {
10257                 dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
10258                 dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
10259         }
10260
10261         /* get the requested speeds from the fw */
10262         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
10263         if (err)
10264                 dev_info(&pf->pdev->dev,
10265                          "get phy capabilities failed, err %s aq_err %s, advertised speed settings may not be correct\n",
10266                          i40e_stat_str(&pf->hw, err),
10267                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10268         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
10269
10270         /* print a string summarizing features */
10271         i40e_print_features(pf);
10272
10273         return 0;
10274
10275         /* Unwind what we've done if something failed in the setup */
10276 err_vsis:
10277         set_bit(__I40E_DOWN, &pf->state);
10278         i40e_clear_interrupt_scheme(pf);
10279         kfree(pf->vsi);
10280 err_switch_setup:
10281         i40e_reset_interrupt_capability(pf);
10282         del_timer_sync(&pf->service_timer);
10283 err_mac_addr:
10284 err_configure_lan_hmc:
10285         (void)i40e_shutdown_lan_hmc(hw);
10286 err_init_lan_hmc:
10287         kfree(pf->qp_pile);
10288 err_sw_init:
10289 err_adminq_setup:
10290         (void)i40e_shutdown_adminq(hw);
10291 err_pf_reset:
10292         iounmap(hw->hw_addr);
10293 err_ioremap:
10294         kfree(pf);
10295 err_pf_alloc:
10296         pci_disable_pcie_error_reporting(pdev);
10297         pci_release_selected_regions(pdev,
10298                                      pci_select_bars(pdev, IORESOURCE_MEM));
10299 err_pci_reg:
10300 err_dma:
10301         pci_disable_device(pdev);
10302         return err;
10303 }
10304
10305 /**
10306  * i40e_remove - Device removal routine
10307  * @pdev: PCI device information struct
10308  *
10309  * i40e_remove is called by the PCI subsystem to alert the driver
10310  * that is should release a PCI device.  This could be caused by a
10311  * Hot-Plug event, or because the driver is going to be removed from
10312  * memory.
10313  **/
10314 static void i40e_remove(struct pci_dev *pdev)
10315 {
10316         struct i40e_pf *pf = pci_get_drvdata(pdev);
10317         i40e_status ret_code;
10318         int i;
10319
10320         i40e_dbg_pf_exit(pf);
10321
10322         i40e_ptp_stop(pf);
10323
10324         /* no more scheduling of any task */
10325         set_bit(__I40E_DOWN, &pf->state);
10326         del_timer_sync(&pf->service_timer);
10327         cancel_work_sync(&pf->service_task);
10328         i40e_fdir_teardown(pf);
10329
10330         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
10331                 i40e_free_vfs(pf);
10332                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
10333         }
10334
10335         i40e_fdir_teardown(pf);
10336
10337         /* If there is a switch structure or any orphans, remove them.
10338          * This will leave only the PF's VSI remaining.
10339          */
10340         for (i = 0; i < I40E_MAX_VEB; i++) {
10341                 if (!pf->veb[i])
10342                         continue;
10343
10344                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
10345                     pf->veb[i]->uplink_seid == 0)
10346                         i40e_switch_branch_release(pf->veb[i]);
10347         }
10348
10349         /* Now we can shutdown the PF's VSI, just before we kill
10350          * adminq and hmc.
10351          */
10352         if (pf->vsi[pf->lan_vsi])
10353                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
10354
10355         /* shutdown and destroy the HMC */
10356         if (pf->hw.hmc.hmc_obj) {
10357                 ret_code = i40e_shutdown_lan_hmc(&pf->hw);
10358                 if (ret_code)
10359                         dev_warn(&pdev->dev,
10360                                  "Failed to destroy the HMC resources: %d\n",
10361                                  ret_code);
10362         }
10363
10364         /* shutdown the adminq */
10365         ret_code = i40e_shutdown_adminq(&pf->hw);
10366         if (ret_code)
10367                 dev_warn(&pdev->dev,
10368                          "Failed to destroy the Admin Queue resources: %d\n",
10369                          ret_code);
10370
10371         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
10372         i40e_clear_interrupt_scheme(pf);
10373         for (i = 0; i < pf->num_alloc_vsi; i++) {
10374                 if (pf->vsi[i]) {
10375                         i40e_vsi_clear_rings(pf->vsi[i]);
10376                         i40e_vsi_clear(pf->vsi[i]);
10377                         pf->vsi[i] = NULL;
10378                 }
10379         }
10380
10381         for (i = 0; i < I40E_MAX_VEB; i++) {
10382                 kfree(pf->veb[i]);
10383                 pf->veb[i] = NULL;
10384         }
10385
10386         kfree(pf->qp_pile);
10387         kfree(pf->vsi);
10388
10389         iounmap(pf->hw.hw_addr);
10390         kfree(pf);
10391         pci_release_selected_regions(pdev,
10392                                      pci_select_bars(pdev, IORESOURCE_MEM));
10393
10394         pci_disable_pcie_error_reporting(pdev);
10395         pci_disable_device(pdev);
10396 }
10397
10398 /**
10399  * i40e_pci_error_detected - warning that something funky happened in PCI land
10400  * @pdev: PCI device information struct
10401  *
10402  * Called to warn that something happened and the error handling steps
10403  * are in progress.  Allows the driver to quiesce things, be ready for
10404  * remediation.
10405  **/
10406 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
10407                                                 enum pci_channel_state error)
10408 {
10409         struct i40e_pf *pf = pci_get_drvdata(pdev);
10410
10411         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
10412
10413         /* shutdown all operations */
10414         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
10415                 rtnl_lock();
10416                 i40e_prep_for_reset(pf);
10417                 rtnl_unlock();
10418         }
10419
10420         /* Request a slot reset */
10421         return PCI_ERS_RESULT_NEED_RESET;
10422 }
10423
10424 /**
10425  * i40e_pci_error_slot_reset - a PCI slot reset just happened
10426  * @pdev: PCI device information struct
10427  *
10428  * Called to find if the driver can work with the device now that
10429  * the pci slot has been reset.  If a basic connection seems good
10430  * (registers are readable and have sane content) then return a
10431  * happy little PCI_ERS_RESULT_xxx.
10432  **/
10433 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
10434 {
10435         struct i40e_pf *pf = pci_get_drvdata(pdev);
10436         pci_ers_result_t result;
10437         int err;
10438         u32 reg;
10439
10440         dev_info(&pdev->dev, "%s\n", __func__);
10441         if (pci_enable_device_mem(pdev)) {
10442                 dev_info(&pdev->dev,
10443                          "Cannot re-enable PCI device after reset.\n");
10444                 result = PCI_ERS_RESULT_DISCONNECT;
10445         } else {
10446                 pci_set_master(pdev);
10447                 pci_restore_state(pdev);
10448                 pci_save_state(pdev);
10449                 pci_wake_from_d3(pdev, false);
10450
10451                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
10452                 if (reg == 0)
10453                         result = PCI_ERS_RESULT_RECOVERED;
10454                 else
10455                         result = PCI_ERS_RESULT_DISCONNECT;
10456         }
10457
10458         err = pci_cleanup_aer_uncorrect_error_status(pdev);
10459         if (err) {
10460                 dev_info(&pdev->dev,
10461                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
10462                          err);
10463                 /* non-fatal, continue */
10464         }
10465
10466         return result;
10467 }
10468
10469 /**
10470  * i40e_pci_error_resume - restart operations after PCI error recovery
10471  * @pdev: PCI device information struct
10472  *
10473  * Called to allow the driver to bring things back up after PCI error
10474  * and/or reset recovery has finished.
10475  **/
10476 static void i40e_pci_error_resume(struct pci_dev *pdev)
10477 {
10478         struct i40e_pf *pf = pci_get_drvdata(pdev);
10479
10480         dev_info(&pdev->dev, "%s\n", __func__);
10481         if (test_bit(__I40E_SUSPENDED, &pf->state))
10482                 return;
10483
10484         rtnl_lock();
10485         i40e_handle_reset_warning(pf);
10486         rtnl_lock();
10487 }
10488
10489 /**
10490  * i40e_shutdown - PCI callback for shutting down
10491  * @pdev: PCI device information struct
10492  **/
10493 static void i40e_shutdown(struct pci_dev *pdev)
10494 {
10495         struct i40e_pf *pf = pci_get_drvdata(pdev);
10496         struct i40e_hw *hw = &pf->hw;
10497
10498         set_bit(__I40E_SUSPENDED, &pf->state);
10499         set_bit(__I40E_DOWN, &pf->state);
10500         rtnl_lock();
10501         i40e_prep_for_reset(pf);
10502         rtnl_unlock();
10503
10504         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10505         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10506
10507         del_timer_sync(&pf->service_timer);
10508         cancel_work_sync(&pf->service_task);
10509         i40e_fdir_teardown(pf);
10510
10511         rtnl_lock();
10512         i40e_prep_for_reset(pf);
10513         rtnl_unlock();
10514
10515         wr32(hw, I40E_PFPM_APM,
10516              (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10517         wr32(hw, I40E_PFPM_WUFC,
10518              (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10519
10520         i40e_clear_interrupt_scheme(pf);
10521
10522         if (system_state == SYSTEM_POWER_OFF) {
10523                 pci_wake_from_d3(pdev, pf->wol_en);
10524                 pci_set_power_state(pdev, PCI_D3hot);
10525         }
10526 }
10527
10528 #ifdef CONFIG_PM
10529 /**
10530  * i40e_suspend - PCI callback for moving to D3
10531  * @pdev: PCI device information struct
10532  **/
10533 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
10534 {
10535         struct i40e_pf *pf = pci_get_drvdata(pdev);
10536         struct i40e_hw *hw = &pf->hw;
10537
10538         set_bit(__I40E_SUSPENDED, &pf->state);
10539         set_bit(__I40E_DOWN, &pf->state);
10540
10541         rtnl_lock();
10542         i40e_prep_for_reset(pf);
10543         rtnl_unlock();
10544
10545         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
10546         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
10547
10548         pci_wake_from_d3(pdev, pf->wol_en);
10549         pci_set_power_state(pdev, PCI_D3hot);
10550
10551         return 0;
10552 }
10553
10554 /**
10555  * i40e_resume - PCI callback for waking up from D3
10556  * @pdev: PCI device information struct
10557  **/
10558 static int i40e_resume(struct pci_dev *pdev)
10559 {
10560         struct i40e_pf *pf = pci_get_drvdata(pdev);
10561         u32 err;
10562
10563         pci_set_power_state(pdev, PCI_D0);
10564         pci_restore_state(pdev);
10565         /* pci_restore_state() clears dev->state_saves, so
10566          * call pci_save_state() again to restore it.
10567          */
10568         pci_save_state(pdev);
10569
10570         err = pci_enable_device_mem(pdev);
10571         if (err) {
10572                 dev_err(&pdev->dev,
10573                         "%s: Cannot enable PCI device from suspend\n",
10574                         __func__);
10575                 return err;
10576         }
10577         pci_set_master(pdev);
10578
10579         /* no wakeup events while running */
10580         pci_wake_from_d3(pdev, false);
10581
10582         /* handling the reset will rebuild the device state */
10583         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
10584                 clear_bit(__I40E_DOWN, &pf->state);
10585                 rtnl_lock();
10586                 i40e_reset_and_rebuild(pf, false);
10587                 rtnl_unlock();
10588         }
10589
10590         return 0;
10591 }
10592
10593 #endif
10594 static const struct pci_error_handlers i40e_err_handler = {
10595         .error_detected = i40e_pci_error_detected,
10596         .slot_reset = i40e_pci_error_slot_reset,
10597         .resume = i40e_pci_error_resume,
10598 };
10599
10600 static struct pci_driver i40e_driver = {
10601         .name     = i40e_driver_name,
10602         .id_table = i40e_pci_tbl,
10603         .probe    = i40e_probe,
10604         .remove   = i40e_remove,
10605 #ifdef CONFIG_PM
10606         .suspend  = i40e_suspend,
10607         .resume   = i40e_resume,
10608 #endif
10609         .shutdown = i40e_shutdown,
10610         .err_handler = &i40e_err_handler,
10611         .sriov_configure = i40e_pci_sriov_configure,
10612 };
10613
10614 /**
10615  * i40e_init_module - Driver registration routine
10616  *
10617  * i40e_init_module is the first routine called when the driver is
10618  * loaded. All it does is register with the PCI subsystem.
10619  **/
10620 static int __init i40e_init_module(void)
10621 {
10622         pr_info("%s: %s - version %s\n", i40e_driver_name,
10623                 i40e_driver_string, i40e_driver_version_str);
10624         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
10625
10626         i40e_dbg_init();
10627         return pci_register_driver(&i40e_driver);
10628 }
10629 module_init(i40e_init_module);
10630
10631 /**
10632  * i40e_exit_module - Driver exit cleanup routine
10633  *
10634  * i40e_exit_module is called just before the driver is removed
10635  * from memory.
10636  **/
10637 static void __exit i40e_exit_module(void)
10638 {
10639         pci_unregister_driver(&i40e_driver);
10640         i40e_dbg_exit();
10641 }
10642 module_exit(i40e_exit_module);