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

   1 /*******************************************************************************
   2  *
   3  * Intel Ethernet Controller XL710 Family Linux Driver
   4  * Copyright(c) 2013 - 2014 Intel Corporation.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  *
  18  * The full GNU General Public License is included in this distribution in
  19  * the file called "COPYING".
  20  *
  21  * Contact Information:
  22  * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  23  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  24  *
  25  ******************************************************************************/
  26
  27 /* Local includes */
  28 #include "i40e.h"
  29 #include "i40e_diag.h"
  30 #ifdef CONFIG_I40E_VXLAN
  31 #include <net/vxlan.h>
  32 #endif
  33
  34 const char i40e_driver_name[] = "i40e";
  35 static const char i40e_driver_string[] =
  36                         "Intel(R) Ethernet Connection XL710 Network Driver";
  37
  38 #define DRV_KERN "-k"
  39
  40 #define DRV_VERSION_MAJOR 1
  41 #define DRV_VERSION_MINOR 0
  42 #define DRV_VERSION_BUILD 11
  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         /* required last entry */
  78         {0, }
  79 };
  80 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
  81
  82 #define I40E_MAX_VF_COUNT 128
  83 static int debug = -1;
  84 module_param(debug, int, 0);
  85 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
  86
  87 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
  88 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
  89 MODULE_LICENSE("GPL");
  90 MODULE_VERSION(DRV_VERSION);
  91
  92 /**
  93  * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
  94  * @hw:   pointer to the HW structure
  95  * @mem:  ptr to mem struct to fill out
  96  * @size: size of memory requested
  97  * @alignment: what to align the allocation to
  98  **/
  99 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
 100                             u64 size, u32 alignment)
 101 {
 102         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 103
 104         mem->size = ALIGN(size, alignment);
 105         mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
 106                                       &mem->pa, GFP_KERNEL);
 107         if (!mem->va)
 108                 return -ENOMEM;
 109
 110         return 0;
 111 }
 112
 113 /**
 114  * i40e_free_dma_mem_d - OS specific memory free for shared code
 115  * @hw:   pointer to the HW structure
 116  * @mem:  ptr to mem struct to free
 117  **/
 118 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
 119 {
 120         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 121
 122         dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
 123         mem->va = NULL;
 124         mem->pa = 0;
 125         mem->size = 0;
 126
 127         return 0;
 128 }
 129
 130 /**
 131  * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 132  * @hw:   pointer to the HW structure
 133  * @mem:  ptr to mem struct to fill out
 134  * @size: size of memory requested
 135  **/
 136 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
 137                              u32 size)
 138 {
 139         mem->size = size;
 140         mem->va = kzalloc(size, GFP_KERNEL);
 141
 142         if (!mem->va)
 143                 return -ENOMEM;
 144
 145         return 0;
 146 }
 147
 148 /**
 149  * i40e_free_virt_mem_d - OS specific memory free for shared code
 150  * @hw:   pointer to the HW structure
 151  * @mem:  ptr to mem struct to free
 152  **/
 153 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
 154 {
 155         /* it's ok to kfree a NULL pointer */
 156         kfree(mem->va);
 157         mem->va = NULL;
 158         mem->size = 0;
 159
 160         return 0;
 161 }
 162
 163 /**
 164  * i40e_get_lump - find a lump of free generic resource
 165  * @pf: board private structure
 166  * @pile: the pile of resource to search
 167  * @needed: the number of items needed
 168  * @id: an owner id to stick on the items assigned
 169  *
 170  * Returns the base item index of the lump, or negative for error
 171  *
 172  * The search_hint trick and lack of advanced fit-finding only work
 173  * because we're highly likely to have all the same size lump requests.
 174  * Linear search time and any fragmentation should be minimal.
 175  **/
 176 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 177                          u16 needed, u16 id)
 178 {
 179         int ret = -ENOMEM;
 180         int i, j;
 181
 182         if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
 183                 dev_info(&pf->pdev->dev,
 184                          "param err: pile=%p needed=%d id=0x%04x\n",
 185                          pile, needed, id);
 186                 return -EINVAL;
 187         }
 188
 189         /* start the linear search with an imperfect hint */
 190         i = pile->search_hint;
 191         while (i < pile->num_entries) {
 192                 /* skip already allocated entries */
 193                 if (pile->list[i] & I40E_PILE_VALID_BIT) {
 194                         i++;
 195                         continue;
 196                 }
 197
 198                 /* do we have enough in this lump? */
 199                 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
 200                         if (pile->list[i+j] & I40E_PILE_VALID_BIT)
 201                                 break;
 202                 }
 203
 204                 if (j == needed) {
 205                         /* there was enough, so assign it to the requestor */
 206                         for (j = 0; j < needed; j++)
 207                                 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 208                         ret = i;
 209                         pile->search_hint = i + j;
 210                         break;
 211                 } else {
 212                         /* not enough, so skip over it and continue looking */
 213                         i += j;
 214                 }
 215         }
 216
 217         return ret;
 218 }
 219
 220 /**
 221  * i40e_put_lump - return a lump of generic resource
 222  * @pile: the pile of resource to search
 223  * @index: the base item index
 224  * @id: the owner id of the items assigned
 225  *
 226  * Returns the count of items in the lump
 227  **/
 228 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
 229 {
 230         int valid_id = (id | I40E_PILE_VALID_BIT);
 231         int count = 0;
 232         int i;
 233
 234         if (!pile || index >= pile->num_entries)
 235                 return -EINVAL;
 236
 237         for (i = index;
 238              i < pile->num_entries && pile->list[i] == valid_id;
 239              i++) {
 240                 pile->list[i] = 0;
 241                 count++;
 242         }
 243
 244         if (count && index < pile->search_hint)
 245                 pile->search_hint = index;
 246
 247         return count;
 248 }
 249
 250 /**
 251  * i40e_service_event_schedule - Schedule the service task to wake up
 252  * @pf: board private structure
 253  *
 254  * If not already scheduled, this puts the task into the work queue
 255  **/
 256 static void i40e_service_event_schedule(struct i40e_pf *pf)
 257 {
 258         if (!test_bit(__I40E_DOWN, &pf->state) &&
 259             !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state) &&
 260             !test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
 261                 schedule_work(&pf->service_task);
 262 }
 263
 264 /**
 265  * i40e_tx_timeout - Respond to a Tx Hang
 266  * @netdev: network interface device structure
 267  *
 268  * If any port has noticed a Tx timeout, it is likely that the whole
 269  * device is munged, not just the one netdev port, so go for the full
 270  * reset.
 271  **/
 272 #ifdef I40E_FCOE
 273 void i40e_tx_timeout(struct net_device *netdev)
 274 #else
 275 static void i40e_tx_timeout(struct net_device *netdev)
 276 #endif
 277 {
 278         struct i40e_netdev_priv *np = netdev_priv(netdev);
 279         struct i40e_vsi *vsi = np->vsi;
 280         struct i40e_pf *pf = vsi->back;
 281
 282         pf->tx_timeout_count++;
 283
 284         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 285                 pf->tx_timeout_recovery_level = 1;
 286         pf->tx_timeout_last_recovery = jiffies;
 287         netdev_info(netdev, "tx_timeout recovery level %d\n",
 288                     pf->tx_timeout_recovery_level);
 289
 290         switch (pf->tx_timeout_recovery_level) {
 291         case 0:
 292                 /* disable and re-enable queues for the VSI */
 293                 if (in_interrupt()) {
 294                         set_bit(__I40E_REINIT_REQUESTED, &pf->state);
 295                         set_bit(__I40E_REINIT_REQUESTED, &vsi->state);
 296                 } else {
 297                         i40e_vsi_reinit_locked(vsi);
 298                 }
 299                 break;
 300         case 1:
 301                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
 302                 break;
 303         case 2:
 304                 set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
 305                 break;
 306         case 3:
 307                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
 308                 break;
 309         default:
 310                 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
 311                 set_bit(__I40E_DOWN_REQUESTED, &pf->state);
 312                 set_bit(__I40E_DOWN_REQUESTED, &vsi->state);
 313                 break;
 314         }
 315         i40e_service_event_schedule(pf);
 316         pf->tx_timeout_recovery_level++;
 317 }
 318
 319 /**
 320  * i40e_release_rx_desc - Store the new tail and head values
 321  * @rx_ring: ring to bump
 322  * @val: new head index
 323  **/
 324 static inline void i40e_release_rx_desc(struct i40e_ring *rx_ring, u32 val)
 325 {
 326         rx_ring->next_to_use = val;
 327
 328         /* Force memory writes to complete before letting h/w
 329          * know there are new descriptors to fetch.  (Only
 330          * applicable for weak-ordered memory model archs,
 331          * such as IA-64).
 332          */
 333         wmb();
 334         writel(val, rx_ring->tail);
 335 }
 336
 337 /**
 338  * i40e_get_vsi_stats_struct - Get System Network Statistics
 339  * @vsi: the VSI we care about
 340  *
 341  * Returns the address of the device statistics structure.
 342  * The statistics are actually updated from the service task.
 343  **/
 344 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 345 {
 346         return &vsi->net_stats;
 347 }
 348
 349 /**
 350  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 351  * @netdev: network interface device structure
 352  *
 353  * Returns the address of the device statistics structure.
 354  * The statistics are actually updated from the service task.
 355  **/
 356 #ifdef I40E_FCOE
 357 struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 358                                              struct net_device *netdev,
 359                                              struct rtnl_link_stats64 *stats)
 360 #else
 361 static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 362                                              struct net_device *netdev,
 363                                              struct rtnl_link_stats64 *stats)
 364 #endif
 365 {
 366         struct i40e_netdev_priv *np = netdev_priv(netdev);
 367         struct i40e_ring *tx_ring, *rx_ring;
 368         struct i40e_vsi *vsi = np->vsi;
 369         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 370         int i;
 371
 372         if (test_bit(__I40E_DOWN, &vsi->state))
 373                 return stats;
 374
 375         if (!vsi->tx_rings)
 376                 return stats;
 377
 378         rcu_read_lock();
 379         for (i = 0; i < vsi->num_queue_pairs; i++) {
 380                 u64 bytes, packets;
 381                 unsigned int start;
 382
 383                 tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
 384                 if (!tx_ring)
 385                         continue;
 386
 387                 do {
 388                         start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
 389                         packets = tx_ring->stats.packets;
 390                         bytes   = tx_ring->stats.bytes;
 391                 } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
 392
 393                 stats->tx_packets += packets;
 394                 stats->tx_bytes   += bytes;
 395                 rx_ring = &tx_ring[1];
 396
 397                 do {
 398                         start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
 399                         packets = rx_ring->stats.packets;
 400                         bytes   = rx_ring->stats.bytes;
 401                 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
 402
 403                 stats->rx_packets += packets;
 404                 stats->rx_bytes   += bytes;
 405         }
 406         rcu_read_unlock();
 407
 408         /* following stats updated by i40e_watchdog_subtask() */
 409         stats->multicast        = vsi_stats->multicast;
 410         stats->tx_errors        = vsi_stats->tx_errors;
 411         stats->tx_dropped       = vsi_stats->tx_dropped;
 412         stats->rx_errors        = vsi_stats->rx_errors;
 413         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 414         stats->rx_length_errors = vsi_stats->rx_length_errors;
 415
 416         return stats;
 417 }
 418
 419 /**
 420  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 421  * @vsi: the VSI to have its stats reset
 422  **/
 423 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 424 {
 425         struct rtnl_link_stats64 *ns;
 426         int i;
 427
 428         if (!vsi)
 429                 return;
 430
 431         ns = i40e_get_vsi_stats_struct(vsi);
 432         memset(ns, 0, sizeof(*ns));
 433         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 434         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 435         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 436         if (vsi->rx_rings && vsi->rx_rings[0]) {
 437                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 438                         memset(&vsi->rx_rings[i]->stats, 0 ,
 439                                sizeof(vsi->rx_rings[i]->stats));
 440                         memset(&vsi->rx_rings[i]->rx_stats, 0 ,
 441                                sizeof(vsi->rx_rings[i]->rx_stats));
 442                         memset(&vsi->tx_rings[i]->stats, 0 ,
 443                                sizeof(vsi->tx_rings[i]->stats));
 444                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 445                                sizeof(vsi->tx_rings[i]->tx_stats));
 446                 }
 447         }
 448         vsi->stat_offsets_loaded = false;
 449 }
 450
 451 /**
 452  * i40e_pf_reset_stats - Reset all of the stats for the given pf
 453  * @pf: the PF to be reset
 454  **/
 455 void i40e_pf_reset_stats(struct i40e_pf *pf)
 456 {
 457         int i;
 458
 459         memset(&pf->stats, 0, sizeof(pf->stats));
 460         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 461         pf->stat_offsets_loaded = false;
 462
 463         for (i = 0; i < I40E_MAX_VEB; i++) {
 464                 if (pf->veb[i]) {
 465                         memset(&pf->veb[i]->stats, 0,
 466                                sizeof(pf->veb[i]->stats));
 467                         memset(&pf->veb[i]->stats_offsets, 0,
 468                                sizeof(pf->veb[i]->stats_offsets));
 469                         pf->veb[i]->stat_offsets_loaded = false;
 470                 }
 471         }
 472 }
 473
 474 /**
 475  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 476  * @hw: ptr to the hardware info
 477  * @hireg: the high 32 bit reg to read
 478  * @loreg: the low 32 bit reg to read
 479  * @offset_loaded: has the initial offset been loaded yet
 480  * @offset: ptr to current offset value
 481  * @stat: ptr to the stat
 482  *
 483  * Since the device stats are not reset at PFReset, they likely will not
 484  * be zeroed when the driver starts.  We'll save the first values read
 485  * and use them as offsets to be subtracted from the raw values in order
 486  * to report stats that count from zero.  In the process, we also manage
 487  * the potential roll-over.
 488  **/
 489 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 490                                bool offset_loaded, u64 *offset, u64 *stat)
 491 {
 492         u64 new_data;
 493
 494         if (hw->device_id == I40E_DEV_ID_QEMU) {
 495                 new_data = rd32(hw, loreg);
 496                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 497         } else {
 498                 new_data = rd64(hw, loreg);
 499         }
 500         if (!offset_loaded)
 501                 *offset = new_data;
 502         if (likely(new_data >= *offset))
 503                 *stat = new_data - *offset;
 504         else
 505                 *stat = (new_data + ((u64)1 << 48)) - *offset;
 506         *stat &= 0xFFFFFFFFFFFFULL;
 507 }
 508
 509 /**
 510  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 511  * @hw: ptr to the hardware info
 512  * @reg: the hw reg to read
 513  * @offset_loaded: has the initial offset been loaded yet
 514  * @offset: ptr to current offset value
 515  * @stat: ptr to the stat
 516  **/
 517 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 518                                bool offset_loaded, u64 *offset, u64 *stat)
 519 {
 520         u32 new_data;
 521
 522         new_data = rd32(hw, reg);
 523         if (!offset_loaded)
 524                 *offset = new_data;
 525         if (likely(new_data >= *offset))
 526                 *stat = (u32)(new_data - *offset);
 527         else
 528                 *stat = (u32)((new_data + ((u64)1 << 32)) - *offset);
 529 }
 530
 531 /**
 532  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 533  * @vsi: the VSI to be updated
 534  **/
 535 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 536 {
 537         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 538         struct i40e_pf *pf = vsi->back;
 539         struct i40e_hw *hw = &pf->hw;
 540         struct i40e_eth_stats *oes;
 541         struct i40e_eth_stats *es;     /* device's eth stats */
 542
 543         es = &vsi->eth_stats;
 544         oes = &vsi->eth_stats_offsets;
 545
 546         /* Gather up the stats that the hw collects */
 547         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 548                            vsi->stat_offsets_loaded,
 549                            &oes->tx_errors, &es->tx_errors);
 550         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 551                            vsi->stat_offsets_loaded,
 552                            &oes->rx_discards, &es->rx_discards);
 553         i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
 554                            vsi->stat_offsets_loaded,
 555                            &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
 556         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 557                            vsi->stat_offsets_loaded,
 558                            &oes->tx_errors, &es->tx_errors);
 559
 560         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 561                            I40E_GLV_GORCL(stat_idx),
 562                            vsi->stat_offsets_loaded,
 563                            &oes->rx_bytes, &es->rx_bytes);
 564         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 565                            I40E_GLV_UPRCL(stat_idx),
 566                            vsi->stat_offsets_loaded,
 567                            &oes->rx_unicast, &es->rx_unicast);
 568         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 569                            I40E_GLV_MPRCL(stat_idx),
 570                            vsi->stat_offsets_loaded,
 571                            &oes->rx_multicast, &es->rx_multicast);
 572         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 573                            I40E_GLV_BPRCL(stat_idx),
 574                            vsi->stat_offsets_loaded,
 575                            &oes->rx_broadcast, &es->rx_broadcast);
 576
 577         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 578                            I40E_GLV_GOTCL(stat_idx),
 579                            vsi->stat_offsets_loaded,
 580                            &oes->tx_bytes, &es->tx_bytes);
 581         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 582                            I40E_GLV_UPTCL(stat_idx),
 583                            vsi->stat_offsets_loaded,
 584                            &oes->tx_unicast, &es->tx_unicast);
 585         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 586                            I40E_GLV_MPTCL(stat_idx),
 587                            vsi->stat_offsets_loaded,
 588                            &oes->tx_multicast, &es->tx_multicast);
 589         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 590                            I40E_GLV_BPTCL(stat_idx),
 591                            vsi->stat_offsets_loaded,
 592                            &oes->tx_broadcast, &es->tx_broadcast);
 593         vsi->stat_offsets_loaded = true;
 594 }
 595
 596 /**
 597  * i40e_update_veb_stats - Update Switch component statistics
 598  * @veb: the VEB being updated
 599  **/
 600 static void i40e_update_veb_stats(struct i40e_veb *veb)
 601 {
 602         struct i40e_pf *pf = veb->pf;
 603         struct i40e_hw *hw = &pf->hw;
 604         struct i40e_eth_stats *oes;
 605         struct i40e_eth_stats *es;     /* device's eth stats */
 606         int idx = 0;
 607
 608         idx = veb->stats_idx;
 609         es = &veb->stats;
 610         oes = &veb->stats_offsets;
 611
 612         /* Gather up the stats that the hw collects */
 613         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 614                            veb->stat_offsets_loaded,
 615                            &oes->tx_discards, &es->tx_discards);
 616         if (hw->revision_id > 0)
 617                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 618                                    veb->stat_offsets_loaded,
 619                                    &oes->rx_unknown_protocol,
 620                                    &es->rx_unknown_protocol);
 621         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 622                            veb->stat_offsets_loaded,
 623                            &oes->rx_bytes, &es->rx_bytes);
 624         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 625                            veb->stat_offsets_loaded,
 626                            &oes->rx_unicast, &es->rx_unicast);
 627         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 628                            veb->stat_offsets_loaded,
 629                            &oes->rx_multicast, &es->rx_multicast);
 630         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 631                            veb->stat_offsets_loaded,
 632                            &oes->rx_broadcast, &es->rx_broadcast);
 633
 634         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 635                            veb->stat_offsets_loaded,
 636                            &oes->tx_bytes, &es->tx_bytes);
 637         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 638                            veb->stat_offsets_loaded,
 639                            &oes->tx_unicast, &es->tx_unicast);
 640         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 641                            veb->stat_offsets_loaded,
 642                            &oes->tx_multicast, &es->tx_multicast);
 643         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 644                            veb->stat_offsets_loaded,
 645                            &oes->tx_broadcast, &es->tx_broadcast);
 646         veb->stat_offsets_loaded = true;
 647 }
 648
 649 #ifdef I40E_FCOE
 650 /**
 651  * i40e_update_fcoe_stats - Update FCoE-specific ethernet statistics counters.
 652  * @vsi: the VSI that is capable of doing FCoE
 653  **/
 654 static void i40e_update_fcoe_stats(struct i40e_vsi *vsi)
 655 {
 656         struct i40e_pf *pf = vsi->back;
 657         struct i40e_hw *hw = &pf->hw;
 658         struct i40e_fcoe_stats *ofs;
 659         struct i40e_fcoe_stats *fs;     /* device's eth stats */
 660         int idx;
 661
 662         if (vsi->type != I40E_VSI_FCOE)
 663                 return;
 664
 665         idx = (pf->pf_seid - I40E_BASE_PF_SEID) + I40E_FCOE_PF_STAT_OFFSET;
 666         fs = &vsi->fcoe_stats;
 667         ofs = &vsi->fcoe_stats_offsets;
 668
 669         i40e_stat_update32(hw, I40E_GL_FCOEPRC(idx),
 670                            vsi->fcoe_stat_offsets_loaded,
 671                            &ofs->rx_fcoe_packets, &fs->rx_fcoe_packets);
 672         i40e_stat_update48(hw, I40E_GL_FCOEDWRCH(idx), I40E_GL_FCOEDWRCL(idx),
 673                            vsi->fcoe_stat_offsets_loaded,
 674                            &ofs->rx_fcoe_dwords, &fs->rx_fcoe_dwords);
 675         i40e_stat_update32(hw, I40E_GL_FCOERPDC(idx),
 676                            vsi->fcoe_stat_offsets_loaded,
 677                            &ofs->rx_fcoe_dropped, &fs->rx_fcoe_dropped);
 678         i40e_stat_update32(hw, I40E_GL_FCOEPTC(idx),
 679                            vsi->fcoe_stat_offsets_loaded,
 680                            &ofs->tx_fcoe_packets, &fs->tx_fcoe_packets);
 681         i40e_stat_update48(hw, I40E_GL_FCOEDWTCH(idx), I40E_GL_FCOEDWTCL(idx),
 682                            vsi->fcoe_stat_offsets_loaded,
 683                            &ofs->tx_fcoe_dwords, &fs->tx_fcoe_dwords);
 684         i40e_stat_update32(hw, I40E_GL_FCOECRC(idx),
 685                            vsi->fcoe_stat_offsets_loaded,
 686                            &ofs->fcoe_bad_fccrc, &fs->fcoe_bad_fccrc);
 687         i40e_stat_update32(hw, I40E_GL_FCOELAST(idx),
 688                            vsi->fcoe_stat_offsets_loaded,
 689                            &ofs->fcoe_last_error, &fs->fcoe_last_error);
 690         i40e_stat_update32(hw, I40E_GL_FCOEDDPC(idx),
 691                            vsi->fcoe_stat_offsets_loaded,
 692                            &ofs->fcoe_ddp_count, &fs->fcoe_ddp_count);
 693
 694         vsi->fcoe_stat_offsets_loaded = true;
 695 }
 696
 697 #endif
 698 /**
 699  * i40e_update_link_xoff_rx - Update XOFF received in link flow control mode
 700  * @pf: the corresponding PF
 701  *
 702  * Update the Rx XOFF counter (PAUSE frames) in link flow control mode
 703  **/
 704 static void i40e_update_link_xoff_rx(struct i40e_pf *pf)
 705 {
 706         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 707         struct i40e_hw_port_stats *nsd = &pf->stats;
 708         struct i40e_hw *hw = &pf->hw;
 709         u64 xoff = 0;
 710         u16 i, v;
 711
 712         if ((hw->fc.current_mode != I40E_FC_FULL) &&
 713             (hw->fc.current_mode != I40E_FC_RX_PAUSE))
 714                 return;
 715
 716         xoff = nsd->link_xoff_rx;
 717         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
 718                            pf->stat_offsets_loaded,
 719                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
 720
 721         /* No new LFC xoff rx */
 722         if (!(nsd->link_xoff_rx - xoff))
 723                 return;
 724
 725         /* Clear the __I40E_HANG_CHECK_ARMED bit for all Tx rings */
 726         for (v = 0; v < pf->num_alloc_vsi; v++) {
 727                 struct i40e_vsi *vsi = pf->vsi[v];
 728
 729                 if (!vsi || !vsi->tx_rings[0])
 730                         continue;
 731
 732                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 733                         struct i40e_ring *ring = vsi->tx_rings[i];
 734                         clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
 735                 }
 736         }
 737 }
 738
 739 /**
 740  * i40e_update_prio_xoff_rx - Update XOFF received in PFC mode
 741  * @pf: the corresponding PF
 742  *
 743  * Update the Rx XOFF counter (PAUSE frames) in PFC mode
 744  **/
 745 static void i40e_update_prio_xoff_rx(struct i40e_pf *pf)
 746 {
 747         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 748         struct i40e_hw_port_stats *nsd = &pf->stats;
 749         bool xoff[I40E_MAX_TRAFFIC_CLASS] = {false};
 750         struct i40e_dcbx_config *dcb_cfg;
 751         struct i40e_hw *hw = &pf->hw;
 752         u16 i, v;
 753         u8 tc;
 754
 755         dcb_cfg = &hw->local_dcbx_config;
 756
 757         /* See if DCB enabled with PFC TC */
 758         if (!(pf->flags & I40E_FLAG_DCB_ENABLED) ||
 759             !(dcb_cfg->pfc.pfcenable)) {
 760                 i40e_update_link_xoff_rx(pf);
 761                 return;
 762         }
 763
 764         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
 765                 u64 prio_xoff = nsd->priority_xoff_rx[i];
 766                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 767                                    pf->stat_offsets_loaded,
 768                                    &osd->priority_xoff_rx[i],
 769                                    &nsd->priority_xoff_rx[i]);
 770
 771                 /* No new PFC xoff rx */
 772                 if (!(nsd->priority_xoff_rx[i] - prio_xoff))
 773                         continue;
 774                 /* Get the TC for given priority */
 775                 tc = dcb_cfg->etscfg.prioritytable[i];
 776                 xoff[tc] = true;
 777         }
 778
 779         /* Clear the __I40E_HANG_CHECK_ARMED bit for Tx rings */
 780         for (v = 0; v < pf->num_alloc_vsi; v++) {
 781                 struct i40e_vsi *vsi = pf->vsi[v];
 782
 783                 if (!vsi || !vsi->tx_rings[0])
 784                         continue;
 785
 786                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 787                         struct i40e_ring *ring = vsi->tx_rings[i];
 788
 789                         tc = ring->dcb_tc;
 790                         if (xoff[tc])
 791                                 clear_bit(__I40E_HANG_CHECK_ARMED,
 792                                           &ring->state);
 793                 }
 794         }
 795 }
 796
 797 /**
 798  * i40e_update_vsi_stats - Update the vsi statistics counters.
 799  * @vsi: the VSI to be updated
 800  *
 801  * There are a few instances where we store the same stat in a
 802  * couple of different structs.  This is partly because we have
 803  * the netdev stats that need to be filled out, which is slightly
 804  * different from the "eth_stats" defined by the chip and used in
 805  * VF communications.  We sort it out here.
 806  **/
 807 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 808 {
 809         struct i40e_pf *pf = vsi->back;
 810         struct rtnl_link_stats64 *ons;
 811         struct rtnl_link_stats64 *ns;   /* netdev stats */
 812         struct i40e_eth_stats *oes;
 813         struct i40e_eth_stats *es;     /* device's eth stats */
 814         u32 tx_restart, tx_busy;
 815         u32 rx_page, rx_buf;
 816         u64 rx_p, rx_b;
 817         u64 tx_p, tx_b;
 818         u16 q;
 819
 820         if (test_bit(__I40E_DOWN, &vsi->state) ||
 821             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 822                 return;
 823
 824         ns = i40e_get_vsi_stats_struct(vsi);
 825         ons = &vsi->net_stats_offsets;
 826         es = &vsi->eth_stats;
 827         oes = &vsi->eth_stats_offsets;
 828
 829         /* Gather up the netdev and vsi stats that the driver collects
 830          * on the fly during packet processing
 831          */
 832         rx_b = rx_p = 0;
 833         tx_b = tx_p = 0;
 834         tx_restart = tx_busy = 0;
 835         rx_page = 0;
 836         rx_buf = 0;
 837         rcu_read_lock();
 838         for (q = 0; q < vsi->num_queue_pairs; q++) {
 839                 struct i40e_ring *p;
 840                 u64 bytes, packets;
 841                 unsigned int start;
 842
 843                 /* locate Tx ring */
 844                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 845
 846                 do {
 847                         start = u64_stats_fetch_begin_irq(&p->syncp);
 848                         packets = p->stats.packets;
 849                         bytes = p->stats.bytes;
 850                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 851                 tx_b += bytes;
 852                 tx_p += packets;
 853                 tx_restart += p->tx_stats.restart_queue;
 854                 tx_busy += p->tx_stats.tx_busy;
 855
 856                 /* Rx queue is part of the same block as Tx queue */
 857                 p = &p[1];
 858                 do {
 859                         start = u64_stats_fetch_begin_irq(&p->syncp);
 860                         packets = p->stats.packets;
 861                         bytes = p->stats.bytes;
 862                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 863                 rx_b += bytes;
 864                 rx_p += packets;
 865                 rx_buf += p->rx_stats.alloc_buff_failed;
 866                 rx_page += p->rx_stats.alloc_page_failed;
 867         }
 868         rcu_read_unlock();
 869         vsi->tx_restart = tx_restart;
 870         vsi->tx_busy = tx_busy;
 871         vsi->rx_page_failed = rx_page;
 872         vsi->rx_buf_failed = rx_buf;
 873
 874         ns->rx_packets = rx_p;
 875         ns->rx_bytes = rx_b;
 876         ns->tx_packets = tx_p;
 877         ns->tx_bytes = tx_b;
 878
 879         /* update netdev stats from eth stats */
 880         i40e_update_eth_stats(vsi);
 881         ons->tx_errors = oes->tx_errors;
 882         ns->tx_errors = es->tx_errors;
 883         ons->multicast = oes->rx_multicast;
 884         ns->multicast = es->rx_multicast;
 885         ons->rx_dropped = oes->rx_discards;
 886         ns->rx_dropped = es->rx_discards;
 887         ons->tx_dropped = oes->tx_discards;
 888         ns->tx_dropped = es->tx_discards;
 889
 890         /* pull in a couple PF stats if this is the main vsi */
 891         if (vsi == pf->vsi[pf->lan_vsi]) {
 892                 ns->rx_crc_errors = pf->stats.crc_errors;
 893                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 894                 ns->rx_length_errors = pf->stats.rx_length_errors;
 895         }
 896 }
 897
 898 /**
 899  * i40e_update_pf_stats - Update the pf statistics counters.
 900  * @pf: the PF to be updated
 901  **/
 902 static void i40e_update_pf_stats(struct i40e_pf *pf)
 903 {
 904         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 905         struct i40e_hw_port_stats *nsd = &pf->stats;
 906         struct i40e_hw *hw = &pf->hw;
 907         u32 val;
 908         int i;
 909
 910         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 911                            I40E_GLPRT_GORCL(hw->port),
 912                            pf->stat_offsets_loaded,
 913                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 914         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 915                            I40E_GLPRT_GOTCL(hw->port),
 916                            pf->stat_offsets_loaded,
 917                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 918         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 919                            pf->stat_offsets_loaded,
 920                            &osd->eth.rx_discards,
 921                            &nsd->eth.rx_discards);
 922         i40e_stat_update32(hw, I40E_GLPRT_TDPC(hw->port),
 923                            pf->stat_offsets_loaded,
 924                            &osd->eth.tx_discards,
 925                            &nsd->eth.tx_discards);
 926
 927         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 928                            I40E_GLPRT_UPRCL(hw->port),
 929                            pf->stat_offsets_loaded,
 930                            &osd->eth.rx_unicast,
 931                            &nsd->eth.rx_unicast);
 932         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 933                            I40E_GLPRT_MPRCL(hw->port),
 934                            pf->stat_offsets_loaded,
 935                            &osd->eth.rx_multicast,
 936                            &nsd->eth.rx_multicast);
 937         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
 938                            I40E_GLPRT_BPRCL(hw->port),
 939                            pf->stat_offsets_loaded,
 940                            &osd->eth.rx_broadcast,
 941                            &nsd->eth.rx_broadcast);
 942         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
 943                            I40E_GLPRT_UPTCL(hw->port),
 944                            pf->stat_offsets_loaded,
 945                            &osd->eth.tx_unicast,
 946                            &nsd->eth.tx_unicast);
 947         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
 948                            I40E_GLPRT_MPTCL(hw->port),
 949                            pf->stat_offsets_loaded,
 950                            &osd->eth.tx_multicast,
 951                            &nsd->eth.tx_multicast);
 952         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
 953                            I40E_GLPRT_BPTCL(hw->port),
 954                            pf->stat_offsets_loaded,
 955                            &osd->eth.tx_broadcast,
 956                            &nsd->eth.tx_broadcast);
 957
 958         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
 959                            pf->stat_offsets_loaded,
 960                            &osd->tx_dropped_link_down,
 961                            &nsd->tx_dropped_link_down);
 962
 963         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
 964                            pf->stat_offsets_loaded,
 965                            &osd->crc_errors, &nsd->crc_errors);
 966
 967         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
 968                            pf->stat_offsets_loaded,
 969                            &osd->illegal_bytes, &nsd->illegal_bytes);
 970
 971         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
 972                            pf->stat_offsets_loaded,
 973                            &osd->mac_local_faults,
 974                            &nsd->mac_local_faults);
 975         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
 976                            pf->stat_offsets_loaded,
 977                            &osd->mac_remote_faults,
 978                            &nsd->mac_remote_faults);
 979
 980         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
 981                            pf->stat_offsets_loaded,
 982                            &osd->rx_length_errors,
 983                            &nsd->rx_length_errors);
 984
 985         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
 986                            pf->stat_offsets_loaded,
 987                            &osd->link_xon_rx, &nsd->link_xon_rx);
 988         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
 989                            pf->stat_offsets_loaded,
 990                            &osd->link_xon_tx, &nsd->link_xon_tx);
 991         i40e_update_prio_xoff_rx(pf);  /* handles I40E_GLPRT_LXOFFRXC */
 992         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
 993                            pf->stat_offsets_loaded,
 994                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
 995
 996         for (i = 0; i < 8; i++) {
 997                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
 998                                    pf->stat_offsets_loaded,
 999                                    &osd->priority_xon_rx[i],
1000                                    &nsd->priority_xon_rx[i]);
1001                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
1002                                    pf->stat_offsets_loaded,
1003                                    &osd->priority_xon_tx[i],
1004                                    &nsd->priority_xon_tx[i]);
1005                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
1006                                    pf->stat_offsets_loaded,
1007                                    &osd->priority_xoff_tx[i],
1008                                    &nsd->priority_xoff_tx[i]);
1009                 i40e_stat_update32(hw,
1010                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
1011                                    pf->stat_offsets_loaded,
1012                                    &osd->priority_xon_2_xoff[i],
1013                                    &nsd->priority_xon_2_xoff[i]);
1014         }
1015
1016         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
1017                            I40E_GLPRT_PRC64L(hw->port),
1018                            pf->stat_offsets_loaded,
1019                            &osd->rx_size_64, &nsd->rx_size_64);
1020         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
1021                            I40E_GLPRT_PRC127L(hw->port),
1022                            pf->stat_offsets_loaded,
1023                            &osd->rx_size_127, &nsd->rx_size_127);
1024         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
1025                            I40E_GLPRT_PRC255L(hw->port),
1026                            pf->stat_offsets_loaded,
1027                            &osd->rx_size_255, &nsd->rx_size_255);
1028         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
1029                            I40E_GLPRT_PRC511L(hw->port),
1030                            pf->stat_offsets_loaded,
1031                            &osd->rx_size_511, &nsd->rx_size_511);
1032         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
1033                            I40E_GLPRT_PRC1023L(hw->port),
1034                            pf->stat_offsets_loaded,
1035                            &osd->rx_size_1023, &nsd->rx_size_1023);
1036         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
1037                            I40E_GLPRT_PRC1522L(hw->port),
1038                            pf->stat_offsets_loaded,
1039                            &osd->rx_size_1522, &nsd->rx_size_1522);
1040         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
1041                            I40E_GLPRT_PRC9522L(hw->port),
1042                            pf->stat_offsets_loaded,
1043                            &osd->rx_size_big, &nsd->rx_size_big);
1044
1045         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
1046                            I40E_GLPRT_PTC64L(hw->port),
1047                            pf->stat_offsets_loaded,
1048                            &osd->tx_size_64, &nsd->tx_size_64);
1049         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
1050                            I40E_GLPRT_PTC127L(hw->port),
1051                            pf->stat_offsets_loaded,
1052                            &osd->tx_size_127, &nsd->tx_size_127);
1053         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
1054                            I40E_GLPRT_PTC255L(hw->port),
1055                            pf->stat_offsets_loaded,
1056                            &osd->tx_size_255, &nsd->tx_size_255);
1057         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
1058                            I40E_GLPRT_PTC511L(hw->port),
1059                            pf->stat_offsets_loaded,
1060                            &osd->tx_size_511, &nsd->tx_size_511);
1061         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1062                            I40E_GLPRT_PTC1023L(hw->port),
1063                            pf->stat_offsets_loaded,
1064                            &osd->tx_size_1023, &nsd->tx_size_1023);
1065         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1066                            I40E_GLPRT_PTC1522L(hw->port),
1067                            pf->stat_offsets_loaded,
1068                            &osd->tx_size_1522, &nsd->tx_size_1522);
1069         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1070                            I40E_GLPRT_PTC9522L(hw->port),
1071                            pf->stat_offsets_loaded,
1072                            &osd->tx_size_big, &nsd->tx_size_big);
1073
1074         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1075                            pf->stat_offsets_loaded,
1076                            &osd->rx_undersize, &nsd->rx_undersize);
1077         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1078                            pf->stat_offsets_loaded,
1079                            &osd->rx_fragments, &nsd->rx_fragments);
1080         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1081                            pf->stat_offsets_loaded,
1082                            &osd->rx_oversize, &nsd->rx_oversize);
1083         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1084                            pf->stat_offsets_loaded,
1085                            &osd->rx_jabber, &nsd->rx_jabber);
1086
1087         /* FDIR stats */
1088         i40e_stat_update32(hw, I40E_GLQF_PCNT(pf->fd_atr_cnt_idx),
1089                            pf->stat_offsets_loaded,
1090                            &osd->fd_atr_match, &nsd->fd_atr_match);
1091         i40e_stat_update32(hw, I40E_GLQF_PCNT(pf->fd_sb_cnt_idx),
1092                            pf->stat_offsets_loaded,
1093                            &osd->fd_sb_match, &nsd->fd_sb_match);
1094
1095         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1096         nsd->tx_lpi_status =
1097                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1098                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1099         nsd->rx_lpi_status =
1100                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1101                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1102         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1103                            pf->stat_offsets_loaded,
1104                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1105         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1106                            pf->stat_offsets_loaded,
1107                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1108
1109         pf->stat_offsets_loaded = true;
1110 }
1111
1112 /**
1113  * i40e_update_stats - Update the various statistics counters.
1114  * @vsi: the VSI to be updated
1115  *
1116  * Update the various stats for this VSI and its related entities.
1117  **/
1118 void i40e_update_stats(struct i40e_vsi *vsi)
1119 {
1120         struct i40e_pf *pf = vsi->back;
1121
1122         if (vsi == pf->vsi[pf->lan_vsi])
1123                 i40e_update_pf_stats(pf);
1124
1125         i40e_update_vsi_stats(vsi);
1126 #ifdef I40E_FCOE
1127         i40e_update_fcoe_stats(vsi);
1128 #endif
1129 }
1130
1131 /**
1132  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1133  * @vsi: the VSI to be searched
1134  * @macaddr: the MAC address
1135  * @vlan: the vlan
1136  * @is_vf: make sure its a vf filter, else doesn't matter
1137  * @is_netdev: make sure its a netdev filter, else doesn't matter
1138  *
1139  * Returns ptr to the filter object or NULL
1140  **/
1141 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1142                                                 u8 *macaddr, s16 vlan,
1143                                                 bool is_vf, bool is_netdev)
1144 {
1145         struct i40e_mac_filter *f;
1146
1147         if (!vsi || !macaddr)
1148                 return NULL;
1149
1150         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1151                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1152                     (vlan == f->vlan)    &&
1153                     (!is_vf || f->is_vf) &&
1154                     (!is_netdev || f->is_netdev))
1155                         return f;
1156         }
1157         return NULL;
1158 }
1159
1160 /**
1161  * i40e_find_mac - Find a mac addr in the macvlan filters list
1162  * @vsi: the VSI to be searched
1163  * @macaddr: the MAC address we are searching for
1164  * @is_vf: make sure its a vf filter, else doesn't matter
1165  * @is_netdev: make sure its a netdev filter, else doesn't matter
1166  *
1167  * Returns the first filter with the provided MAC address or NULL if
1168  * MAC address was not found
1169  **/
1170 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1171                                       bool is_vf, bool is_netdev)
1172 {
1173         struct i40e_mac_filter *f;
1174
1175         if (!vsi || !macaddr)
1176                 return NULL;
1177
1178         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1179                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1180                     (!is_vf || f->is_vf) &&
1181                     (!is_netdev || f->is_netdev))
1182                         return f;
1183         }
1184         return NULL;
1185 }
1186
1187 /**
1188  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1189  * @vsi: the VSI to be searched
1190  *
1191  * Returns true if VSI is in vlan mode or false otherwise
1192  **/
1193 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1194 {
1195         struct i40e_mac_filter *f;
1196
1197         /* Only -1 for all the filters denotes not in vlan mode
1198          * so we have to go through all the list in order to make sure
1199          */
1200         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1201                 if (f->vlan >= 0)
1202                         return true;
1203         }
1204
1205         return false;
1206 }
1207
1208 /**
1209  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1210  * @vsi: the VSI to be searched
1211  * @macaddr: the mac address to be filtered
1212  * @is_vf: true if it is a vf
1213  * @is_netdev: true if it is a netdev
1214  *
1215  * Goes through all the macvlan filters and adds a
1216  * macvlan filter for each unique vlan that already exists
1217  *
1218  * Returns first filter found on success, else NULL
1219  **/
1220 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1221                                              bool is_vf, bool is_netdev)
1222 {
1223         struct i40e_mac_filter *f;
1224
1225         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1226                 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1227                                       is_vf, is_netdev)) {
1228                         if (!i40e_add_filter(vsi, macaddr, f->vlan,
1229                                              is_vf, is_netdev))
1230                                 return NULL;
1231                 }
1232         }
1233
1234         return list_first_entry_or_null(&vsi->mac_filter_list,
1235                                         struct i40e_mac_filter, list);
1236 }
1237
1238 /**
1239  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1240  * @vsi: the PF Main VSI - inappropriate for any other VSI
1241  * @macaddr: the MAC address
1242  *
1243  * Some older firmware configurations set up a default promiscuous VLAN
1244  * filter that needs to be removed.
1245  **/
1246 static int i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1247 {
1248         struct i40e_aqc_remove_macvlan_element_data element;
1249         struct i40e_pf *pf = vsi->back;
1250         i40e_status aq_ret;
1251
1252         /* Only appropriate for the PF main VSI */
1253         if (vsi->type != I40E_VSI_MAIN)
1254                 return -EINVAL;
1255
1256         memset(&element, 0, sizeof(element));
1257         ether_addr_copy(element.mac_addr, macaddr);
1258         element.vlan_tag = 0;
1259         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1260                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1261         aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1262         if (aq_ret)
1263                 return -ENOENT;
1264
1265         return 0;
1266 }
1267
1268 /**
1269  * i40e_add_filter - Add a mac/vlan filter to the VSI
1270  * @vsi: the VSI to be searched
1271  * @macaddr: the MAC address
1272  * @vlan: the vlan
1273  * @is_vf: make sure its a vf filter, else doesn't matter
1274  * @is_netdev: make sure its a netdev filter, else doesn't matter
1275  *
1276  * Returns ptr to the filter object or NULL when no memory available.
1277  **/
1278 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1279                                         u8 *macaddr, s16 vlan,
1280                                         bool is_vf, bool is_netdev)
1281 {
1282         struct i40e_mac_filter *f;
1283
1284         if (!vsi || !macaddr)
1285                 return NULL;
1286
1287         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1288         if (!f) {
1289                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1290                 if (!f)
1291                         goto add_filter_out;
1292
1293                 ether_addr_copy(f->macaddr, macaddr);
1294                 f->vlan = vlan;
1295                 f->changed = true;
1296
1297                 INIT_LIST_HEAD(&f->list);
1298                 list_add(&f->list, &vsi->mac_filter_list);
1299         }
1300
1301         /* increment counter and add a new flag if needed */
1302         if (is_vf) {
1303                 if (!f->is_vf) {
1304                         f->is_vf = true;
1305                         f->counter++;
1306                 }
1307         } else if (is_netdev) {
1308                 if (!f->is_netdev) {
1309                         f->is_netdev = true;
1310                         f->counter++;
1311                 }
1312         } else {
1313                 f->counter++;
1314         }
1315
1316         /* changed tells sync_filters_subtask to
1317          * push the filter down to the firmware
1318          */
1319         if (f->changed) {
1320                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1321                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1322         }
1323
1324 add_filter_out:
1325         return f;
1326 }
1327
1328 /**
1329  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1330  * @vsi: the VSI to be searched
1331  * @macaddr: the MAC address
1332  * @vlan: the vlan
1333  * @is_vf: make sure it's a vf filter, else doesn't matter
1334  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1335  **/
1336 void i40e_del_filter(struct i40e_vsi *vsi,
1337                      u8 *macaddr, s16 vlan,
1338                      bool is_vf, bool is_netdev)
1339 {
1340         struct i40e_mac_filter *f;
1341
1342         if (!vsi || !macaddr)
1343                 return;
1344
1345         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1346         if (!f || f->counter == 0)
1347                 return;
1348
1349         if (is_vf) {
1350                 if (f->is_vf) {
1351                         f->is_vf = false;
1352                         f->counter--;
1353                 }
1354         } else if (is_netdev) {
1355                 if (f->is_netdev) {
1356                         f->is_netdev = false;
1357                         f->counter--;
1358                 }
1359         } else {
1360                 /* make sure we don't remove a filter in use by vf or netdev */
1361                 int min_f = 0;
1362                 min_f += (f->is_vf ? 1 : 0);
1363                 min_f += (f->is_netdev ? 1 : 0);
1364
1365                 if (f->counter > min_f)
1366                         f->counter--;
1367         }
1368
1369         /* counter == 0 tells sync_filters_subtask to
1370          * remove the filter from the firmware's list
1371          */
1372         if (f->counter == 0) {
1373                 f->changed = true;
1374                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1375                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1376         }
1377 }
1378
1379 /**
1380  * i40e_set_mac - NDO callback to set mac address
1381  * @netdev: network interface device structure
1382  * @p: pointer to an address structure
1383  *
1384  * Returns 0 on success, negative on failure
1385  **/
1386 #ifdef I40E_FCOE
1387 int i40e_set_mac(struct net_device *netdev, void *p)
1388 #else
1389 static int i40e_set_mac(struct net_device *netdev, void *p)
1390 #endif
1391 {
1392         struct i40e_netdev_priv *np = netdev_priv(netdev);
1393         struct i40e_vsi *vsi = np->vsi;
1394         struct i40e_pf *pf = vsi->back;
1395         struct i40e_hw *hw = &pf->hw;
1396         struct sockaddr *addr = p;
1397         struct i40e_mac_filter *f;
1398
1399         if (!is_valid_ether_addr(addr->sa_data))
1400                 return -EADDRNOTAVAIL;
1401
1402         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1403                 netdev_info(netdev, "already using mac address %pM\n",
1404                             addr->sa_data);
1405                 return 0;
1406         }
1407
1408         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1409             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1410                 return -EADDRNOTAVAIL;
1411
1412         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1413                 netdev_info(netdev, "returning to hw mac address %pM\n",
1414                             hw->mac.addr);
1415         else
1416                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1417
1418         if (vsi->type == I40E_VSI_MAIN) {
1419                 i40e_status ret;
1420                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1421                                                 I40E_AQC_WRITE_TYPE_LAA_WOL,
1422                                                 addr->sa_data, NULL);
1423                 if (ret) {
1424                         netdev_info(netdev,
1425                                     "Addr change for Main VSI failed: %d\n",
1426                                     ret);
1427                         return -EADDRNOTAVAIL;
1428                 }
1429         }
1430
1431         if (ether_addr_equal(netdev->dev_addr, hw->mac.addr)) {
1432                 struct i40e_aqc_remove_macvlan_element_data element;
1433
1434                 memset(&element, 0, sizeof(element));
1435                 ether_addr_copy(element.mac_addr, netdev->dev_addr);
1436                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1437                 i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1438         } else {
1439                 i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
1440                                 false, false);
1441         }
1442
1443         if (ether_addr_equal(addr->sa_data, hw->mac.addr)) {
1444                 struct i40e_aqc_add_macvlan_element_data element;
1445
1446                 memset(&element, 0, sizeof(element));
1447                 ether_addr_copy(element.mac_addr, hw->mac.addr);
1448                 element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
1449                 i40e_aq_add_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1450         } else {
1451                 f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY,
1452                                     false, false);
1453                 if (f)
1454                         f->is_laa = true;
1455         }
1456
1457         i40e_sync_vsi_filters(vsi);
1458         ether_addr_copy(netdev->dev_addr, addr->sa_data);
1459
1460         return 0;
1461 }
1462
1463 /**
1464  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1465  * @vsi: the VSI being setup
1466  * @ctxt: VSI context structure
1467  * @enabled_tc: Enabled TCs bitmap
1468  * @is_add: True if called before Add VSI
1469  *
1470  * Setup VSI queue mapping for enabled traffic classes.
1471  **/
1472 #ifdef I40E_FCOE
1473 void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1474                               struct i40e_vsi_context *ctxt,
1475                               u8 enabled_tc,
1476                               bool is_add)
1477 #else
1478 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1479                                      struct i40e_vsi_context *ctxt,
1480                                      u8 enabled_tc,
1481                                      bool is_add)
1482 #endif
1483 {
1484         struct i40e_pf *pf = vsi->back;
1485         u16 sections = 0;
1486         u8 netdev_tc = 0;
1487         u16 numtc = 0;
1488         u16 qcount;
1489         u8 offset;
1490         u16 qmap;
1491         int i;
1492         u16 num_tc_qps = 0;
1493
1494         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1495         offset = 0;
1496
1497         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1498                 /* Find numtc from enabled TC bitmap */
1499                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1500                         if (enabled_tc & (1 << i)) /* TC is enabled */
1501                                 numtc++;
1502                 }
1503                 if (!numtc) {
1504                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1505                         numtc = 1;
1506                 }
1507         } else {
1508                 /* At least TC0 is enabled in case of non-DCB case */
1509                 numtc = 1;
1510         }
1511
1512         vsi->tc_config.numtc = numtc;
1513         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1514         /* Number of queues per enabled TC */
1515         num_tc_qps = vsi->alloc_queue_pairs/numtc;
1516         num_tc_qps = min_t(int, num_tc_qps, I40E_MAX_QUEUES_PER_TC);
1517
1518         /* Setup queue offset/count for all TCs for given VSI */
1519         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1520                 /* See if the given TC is enabled for the given VSI */
1521                 if (vsi->tc_config.enabled_tc & (1 << i)) { /* TC is enabled */
1522                         int pow, num_qps;
1523
1524                         switch (vsi->type) {
1525                         case I40E_VSI_MAIN:
1526                                 qcount = min_t(int, pf->rss_size, num_tc_qps);
1527                                 break;
1528 #ifdef I40E_FCOE
1529                         case I40E_VSI_FCOE:
1530                                 qcount = num_tc_qps;
1531                                 break;
1532 #endif
1533                         case I40E_VSI_FDIR:
1534                         case I40E_VSI_SRIOV:
1535                         case I40E_VSI_VMDQ2:
1536                         default:
1537                                 qcount = num_tc_qps;
1538                                 WARN_ON(i != 0);
1539                                 break;
1540                         }
1541                         vsi->tc_config.tc_info[i].qoffset = offset;
1542                         vsi->tc_config.tc_info[i].qcount = qcount;
1543
1544                         /* find the power-of-2 of the number of queue pairs */
1545                         num_qps = qcount;
1546                         pow = 0;
1547                         while (num_qps && ((1 << pow) < qcount)) {
1548                                 pow++;
1549                                 num_qps >>= 1;
1550                         }
1551
1552                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1553                         qmap =
1554                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1555                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1556
1557                         offset += qcount;
1558                 } else {
1559                         /* TC is not enabled so set the offset to
1560                          * default queue and allocate one queue
1561                          * for the given TC.
1562                          */
1563                         vsi->tc_config.tc_info[i].qoffset = 0;
1564                         vsi->tc_config.tc_info[i].qcount = 1;
1565                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1566
1567                         qmap = 0;
1568                 }
1569                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1570         }
1571
1572         /* Set actual Tx/Rx queue pairs */
1573         vsi->num_queue_pairs = offset;
1574
1575         /* Scheduler section valid can only be set for ADD VSI */
1576         if (is_add) {
1577                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1578
1579                 ctxt->info.up_enable_bits = enabled_tc;
1580         }
1581         if (vsi->type == I40E_VSI_SRIOV) {
1582                 ctxt->info.mapping_flags |=
1583                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1584                 for (i = 0; i < vsi->num_queue_pairs; i++)
1585                         ctxt->info.queue_mapping[i] =
1586                                                cpu_to_le16(vsi->base_queue + i);
1587         } else {
1588                 ctxt->info.mapping_flags |=
1589                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1590                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1591         }
1592         ctxt->info.valid_sections |= cpu_to_le16(sections);
1593 }
1594
1595 /**
1596  * i40e_set_rx_mode - NDO callback to set the netdev filters
1597  * @netdev: network interface device structure
1598  **/
1599 #ifdef I40E_FCOE
1600 void i40e_set_rx_mode(struct net_device *netdev)
1601 #else
1602 static void i40e_set_rx_mode(struct net_device *netdev)
1603 #endif
1604 {
1605         struct i40e_netdev_priv *np = netdev_priv(netdev);
1606         struct i40e_mac_filter *f, *ftmp;
1607         struct i40e_vsi *vsi = np->vsi;
1608         struct netdev_hw_addr *uca;
1609         struct netdev_hw_addr *mca;
1610         struct netdev_hw_addr *ha;
1611
1612         /* add addr if not already in the filter list */
1613         netdev_for_each_uc_addr(uca, netdev) {
1614                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1615                         if (i40e_is_vsi_in_vlan(vsi))
1616                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1617                                                      false, true);
1618                         else
1619                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1620                                                 false, true);
1621                 }
1622         }
1623
1624         netdev_for_each_mc_addr(mca, netdev) {
1625                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1626                         if (i40e_is_vsi_in_vlan(vsi))
1627                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1628                                                      false, true);
1629                         else
1630                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1631                                                 false, true);
1632                 }
1633         }
1634
1635         /* remove filter if not in netdev list */
1636         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1637                 bool found = false;
1638
1639                 if (!f->is_netdev)
1640                         continue;
1641
1642                 if (is_multicast_ether_addr(f->macaddr)) {
1643                         netdev_for_each_mc_addr(mca, netdev) {
1644                                 if (ether_addr_equal(mca->addr, f->macaddr)) {
1645                                         found = true;
1646                                         break;
1647                                 }
1648                         }
1649                 } else {
1650                         netdev_for_each_uc_addr(uca, netdev) {
1651                                 if (ether_addr_equal(uca->addr, f->macaddr)) {
1652                                         found = true;
1653                                         break;
1654                                 }
1655                         }
1656
1657                         for_each_dev_addr(netdev, ha) {
1658                                 if (ether_addr_equal(ha->addr, f->macaddr)) {
1659                                         found = true;
1660                                         break;
1661                                 }
1662                         }
1663                 }
1664                 if (!found)
1665                         i40e_del_filter(
1666                            vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1667         }
1668
1669         /* check for other flag changes */
1670         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1671                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1672                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1673         }
1674 }
1675
1676 /**
1677  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1678  * @vsi: ptr to the VSI
1679  *
1680  * Push any outstanding VSI filter changes through the AdminQ.
1681  *
1682  * Returns 0 or error value
1683  **/
1684 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
1685 {
1686         struct i40e_mac_filter *f, *ftmp;
1687         bool promisc_forced_on = false;
1688         bool add_happened = false;
1689         int filter_list_len = 0;
1690         u32 changed_flags = 0;
1691         i40e_status aq_ret = 0;
1692         struct i40e_pf *pf;
1693         int num_add = 0;
1694         int num_del = 0;
1695         u16 cmd_flags;
1696
1697         /* empty array typed pointers, kcalloc later */
1698         struct i40e_aqc_add_macvlan_element_data *add_list;
1699         struct i40e_aqc_remove_macvlan_element_data *del_list;
1700
1701         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1702                 usleep_range(1000, 2000);
1703         pf = vsi->back;
1704
1705         if (vsi->netdev) {
1706                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1707                 vsi->current_netdev_flags = vsi->netdev->flags;
1708         }
1709
1710         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1711                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1712
1713                 filter_list_len = pf->hw.aq.asq_buf_size /
1714                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1715                 del_list = kcalloc(filter_list_len,
1716                             sizeof(struct i40e_aqc_remove_macvlan_element_data),
1717                             GFP_KERNEL);
1718                 if (!del_list)
1719                         return -ENOMEM;
1720
1721                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1722                         if (!f->changed)
1723                                 continue;
1724
1725                         if (f->counter != 0)
1726                                 continue;
1727                         f->changed = false;
1728                         cmd_flags = 0;
1729
1730                         /* add to delete list */
1731                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
1732                         del_list[num_del].vlan_tag =
1733                                 cpu_to_le16((u16)(f->vlan ==
1734                                             I40E_VLAN_ANY ? 0 : f->vlan));
1735
1736                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1737                         del_list[num_del].flags = cmd_flags;
1738                         num_del++;
1739
1740                         /* unlink from filter list */
1741                         list_del(&f->list);
1742                         kfree(f);
1743
1744                         /* flush a full buffer */
1745                         if (num_del == filter_list_len) {
1746                                 aq_ret = i40e_aq_remove_macvlan(&pf->hw,
1747                                             vsi->seid, del_list, num_del,
1748                                             NULL);
1749                                 num_del = 0;
1750                                 memset(del_list, 0, sizeof(*del_list));
1751
1752                                 if (aq_ret &&
1753                                     pf->hw.aq.asq_last_status !=
1754                                                               I40E_AQ_RC_ENOENT)
1755                                         dev_info(&pf->pdev->dev,
1756                                                  "ignoring delete macvlan error, err %d, aq_err %d while flushing a full buffer\n",
1757                                                  aq_ret,
1758                                                  pf->hw.aq.asq_last_status);
1759                         }
1760                 }
1761                 if (num_del) {
1762                         aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
1763                                                      del_list, num_del, NULL);
1764                         num_del = 0;
1765
1766                         if (aq_ret &&
1767                             pf->hw.aq.asq_last_status != I40E_AQ_RC_ENOENT)
1768                                 dev_info(&pf->pdev->dev,
1769                                          "ignoring delete macvlan error, err %d, aq_err %d\n",
1770                                          aq_ret, pf->hw.aq.asq_last_status);
1771                 }
1772
1773                 kfree(del_list);
1774                 del_list = NULL;
1775
1776                 /* do all the adds now */
1777                 filter_list_len = pf->hw.aq.asq_buf_size /
1778                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1779                 add_list = kcalloc(filter_list_len,
1780                                sizeof(struct i40e_aqc_add_macvlan_element_data),
1781                                GFP_KERNEL);
1782                 if (!add_list)
1783                         return -ENOMEM;
1784
1785                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1786                         if (!f->changed)
1787                                 continue;
1788
1789                         if (f->counter == 0)
1790                                 continue;
1791                         f->changed = false;
1792                         add_happened = true;
1793                         cmd_flags = 0;
1794
1795                         /* add to add array */
1796                         ether_addr_copy(add_list[num_add].mac_addr, f->macaddr);
1797                         add_list[num_add].vlan_tag =
1798                                 cpu_to_le16(
1799                                  (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
1800                         add_list[num_add].queue_number = 0;
1801
1802                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
1803                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
1804                         num_add++;
1805
1806                         /* flush a full buffer */
1807                         if (num_add == filter_list_len) {
1808                                 aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1809                                                              add_list, num_add,
1810                                                              NULL);
1811                                 num_add = 0;
1812
1813                                 if (aq_ret)
1814                                         break;
1815                                 memset(add_list, 0, sizeof(*add_list));
1816                         }
1817                 }
1818                 if (num_add) {
1819                         aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
1820                                                      add_list, num_add, NULL);
1821                         num_add = 0;
1822                 }
1823                 kfree(add_list);
1824                 add_list = NULL;
1825
1826                 if (add_happened && aq_ret &&
1827                     pf->hw.aq.asq_last_status != I40E_AQ_RC_EINVAL) {
1828                         dev_info(&pf->pdev->dev,
1829                                  "add filter failed, err %d, aq_err %d\n",
1830                                  aq_ret, pf->hw.aq.asq_last_status);
1831                         if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
1832                             !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1833                                       &vsi->state)) {
1834                                 promisc_forced_on = true;
1835                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1836                                         &vsi->state);
1837                                 dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
1838                         }
1839                 }
1840         }
1841
1842         /* check for changes in promiscuous modes */
1843         if (changed_flags & IFF_ALLMULTI) {
1844                 bool cur_multipromisc;
1845                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
1846                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
1847                                                                vsi->seid,
1848                                                                cur_multipromisc,
1849                                                                NULL);
1850                 if (aq_ret)
1851                         dev_info(&pf->pdev->dev,
1852                                  "set multi promisc failed, err %d, aq_err %d\n",
1853                                  aq_ret, pf->hw.aq.asq_last_status);
1854         }
1855         if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
1856                 bool cur_promisc;
1857                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
1858                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
1859                                         &vsi->state));
1860                 aq_ret = i40e_aq_set_vsi_unicast_promiscuous(&vsi->back->hw,
1861                                                              vsi->seid,
1862                                                              cur_promisc, NULL);
1863                 if (aq_ret)
1864                         dev_info(&pf->pdev->dev,
1865                                  "set uni promisc failed, err %d, aq_err %d\n",
1866                                  aq_ret, pf->hw.aq.asq_last_status);
1867                 aq_ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
1868                                                    vsi->seid,
1869                                                    cur_promisc, NULL);
1870                 if (aq_ret)
1871                         dev_info(&pf->pdev->dev,
1872                                  "set brdcast promisc failed, err %d, aq_err %d\n",
1873                                  aq_ret, pf->hw.aq.asq_last_status);
1874         }
1875
1876         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
1877         return 0;
1878 }
1879
1880 /**
1881  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
1882  * @pf: board private structure
1883  **/
1884 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
1885 {
1886         int v;
1887
1888         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
1889                 return;
1890         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
1891
1892         for (v = 0; v < pf->num_alloc_vsi; v++) {
1893                 if (pf->vsi[v] &&
1894                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED))
1895                         i40e_sync_vsi_filters(pf->vsi[v]);
1896         }
1897 }
1898
1899 /**
1900  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
1901  * @netdev: network interface device structure
1902  * @new_mtu: new value for maximum frame size
1903  *
1904  * Returns 0 on success, negative on failure
1905  **/
1906 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
1907 {
1908         struct i40e_netdev_priv *np = netdev_priv(netdev);
1909         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
1910         struct i40e_vsi *vsi = np->vsi;
1911
1912         /* MTU < 68 is an error and causes problems on some kernels */
1913         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
1914                 return -EINVAL;
1915
1916         netdev_info(netdev, "changing MTU from %d to %d\n",
1917                     netdev->mtu, new_mtu);
1918         netdev->mtu = new_mtu;
1919         if (netif_running(netdev))
1920                 i40e_vsi_reinit_locked(vsi);
1921
1922         return 0;
1923 }
1924
1925 /**
1926  * i40e_ioctl - Access the hwtstamp interface
1927  * @netdev: network interface device structure
1928  * @ifr: interface request data
1929  * @cmd: ioctl command
1930  **/
1931 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
1932 {
1933         struct i40e_netdev_priv *np = netdev_priv(netdev);
1934         struct i40e_pf *pf = np->vsi->back;
1935
1936         switch (cmd) {
1937         case SIOCGHWTSTAMP:
1938                 return i40e_ptp_get_ts_config(pf, ifr);
1939         case SIOCSHWTSTAMP:
1940                 return i40e_ptp_set_ts_config(pf, ifr);
1941         default:
1942                 return -EOPNOTSUPP;
1943         }
1944 }
1945
1946 /**
1947  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
1948  * @vsi: the vsi being adjusted
1949  **/
1950 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
1951 {
1952         struct i40e_vsi_context ctxt;
1953         i40e_status ret;
1954
1955         if ((vsi->info.valid_sections &
1956              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
1957             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
1958                 return;  /* already enabled */
1959
1960         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
1961         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
1962                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
1963
1964         ctxt.seid = vsi->seid;
1965         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
1966         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
1967         if (ret) {
1968                 dev_info(&vsi->back->pdev->dev,
1969                          "%s: update vsi failed, aq_err=%d\n",
1970                          __func__, vsi->back->hw.aq.asq_last_status);
1971         }
1972 }
1973
1974 /**
1975  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
1976  * @vsi: the vsi being adjusted
1977  **/
1978 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
1979 {
1980         struct i40e_vsi_context ctxt;
1981         i40e_status ret;
1982
1983         if ((vsi->info.valid_sections &
1984              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
1985             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
1986              I40E_AQ_VSI_PVLAN_EMOD_MASK))
1987                 return;  /* already disabled */
1988
1989         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
1990         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
1991                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
1992
1993         ctxt.seid = vsi->seid;
1994         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
1995         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
1996         if (ret) {
1997                 dev_info(&vsi->back->pdev->dev,
1998                          "%s: update vsi failed, aq_err=%d\n",
1999                          __func__, vsi->back->hw.aq.asq_last_status);
2000         }
2001 }
2002
2003 /**
2004  * i40e_vlan_rx_register - Setup or shutdown vlan offload
2005  * @netdev: network interface to be adjusted
2006  * @features: netdev features to test if VLAN offload is enabled or not
2007  **/
2008 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
2009 {
2010         struct i40e_netdev_priv *np = netdev_priv(netdev);
2011         struct i40e_vsi *vsi = np->vsi;
2012
2013         if (features & NETIF_F_HW_VLAN_CTAG_RX)
2014                 i40e_vlan_stripping_enable(vsi);
2015         else
2016                 i40e_vlan_stripping_disable(vsi);
2017 }
2018
2019 /**
2020  * i40e_vsi_add_vlan - Add vsi membership for given vlan
2021  * @vsi: the vsi being configured
2022  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2023  **/
2024 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
2025 {
2026         struct i40e_mac_filter *f, *add_f;
2027         bool is_netdev, is_vf;
2028
2029         is_vf = (vsi->type == I40E_VSI_SRIOV);
2030         is_netdev = !!(vsi->netdev);
2031
2032         if (is_netdev) {
2033                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
2034                                         is_vf, is_netdev);
2035                 if (!add_f) {
2036                         dev_info(&vsi->back->pdev->dev,
2037                                  "Could not add vlan filter %d for %pM\n",
2038                                  vid, vsi->netdev->dev_addr);
2039                         return -ENOMEM;
2040                 }
2041         }
2042
2043         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2044                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2045                 if (!add_f) {
2046                         dev_info(&vsi->back->pdev->dev,
2047                                  "Could not add vlan filter %d for %pM\n",
2048                                  vid, f->macaddr);
2049                         return -ENOMEM;
2050                 }
2051         }
2052
2053         /* Now if we add a vlan tag, make sure to check if it is the first
2054          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
2055          * with 0, so we now accept untagged and specified tagged traffic
2056          * (and not any taged and untagged)
2057          */
2058         if (vid > 0) {
2059                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
2060                                                   I40E_VLAN_ANY,
2061                                                   is_vf, is_netdev)) {
2062                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
2063                                         I40E_VLAN_ANY, is_vf, is_netdev);
2064                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
2065                                                 is_vf, is_netdev);
2066                         if (!add_f) {
2067                                 dev_info(&vsi->back->pdev->dev,
2068                                          "Could not add filter 0 for %pM\n",
2069                                          vsi->netdev->dev_addr);
2070                                 return -ENOMEM;
2071                         }
2072                 }
2073         }
2074
2075         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
2076         if (vid > 0 && !vsi->info.pvid) {
2077                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2078                         if (i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2079                                              is_vf, is_netdev)) {
2080                                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2081                                                 is_vf, is_netdev);
2082                                 add_f = i40e_add_filter(vsi, f->macaddr,
2083                                                         0, is_vf, is_netdev);
2084                                 if (!add_f) {
2085                                         dev_info(&vsi->back->pdev->dev,
2086                                                  "Could not add filter 0 for %pM\n",
2087                                                  f->macaddr);
2088                                         return -ENOMEM;
2089                                 }
2090                         }
2091                 }
2092         }
2093
2094         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2095             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2096                 return 0;
2097
2098         return i40e_sync_vsi_filters(vsi);
2099 }
2100
2101 /**
2102  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
2103  * @vsi: the vsi being configured
2104  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2105  *
2106  * Return: 0 on success or negative otherwise
2107  **/
2108 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
2109 {
2110         struct net_device *netdev = vsi->netdev;
2111         struct i40e_mac_filter *f, *add_f;
2112         bool is_vf, is_netdev;
2113         int filter_count = 0;
2114
2115         is_vf = (vsi->type == I40E_VSI_SRIOV);
2116         is_netdev = !!(netdev);
2117
2118         if (is_netdev)
2119                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
2120
2121         list_for_each_entry(f, &vsi->mac_filter_list, list)
2122                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2123
2124         /* go through all the filters for this VSI and if there is only
2125          * vid == 0 it means there are no other filters, so vid 0 must
2126          * be replaced with -1. This signifies that we should from now
2127          * on accept any traffic (with any tag present, or untagged)
2128          */
2129         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2130                 if (is_netdev) {
2131                         if (f->vlan &&
2132                             ether_addr_equal(netdev->dev_addr, f->macaddr))
2133                                 filter_count++;
2134                 }
2135
2136                 if (f->vlan)
2137                         filter_count++;
2138         }
2139
2140         if (!filter_count && is_netdev) {
2141                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
2142                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
2143                                     is_vf, is_netdev);
2144                 if (!f) {
2145                         dev_info(&vsi->back->pdev->dev,
2146                                  "Could not add filter %d for %pM\n",
2147                                  I40E_VLAN_ANY, netdev->dev_addr);
2148                         return -ENOMEM;
2149                 }
2150         }
2151
2152         if (!filter_count) {
2153                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2154                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
2155                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2156                                             is_vf, is_netdev);
2157                         if (!add_f) {
2158                                 dev_info(&vsi->back->pdev->dev,
2159                                          "Could not add filter %d for %pM\n",
2160                                          I40E_VLAN_ANY, f->macaddr);
2161                                 return -ENOMEM;
2162                         }
2163                 }
2164         }
2165
2166         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
2167             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
2168                 return 0;
2169
2170         return i40e_sync_vsi_filters(vsi);
2171 }
2172
2173 /**
2174  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2175  * @netdev: network interface to be adjusted
2176  * @vid: vlan id to be added
2177  *
2178  * net_device_ops implementation for adding vlan ids
2179  **/
2180 #ifdef I40E_FCOE
2181 int i40e_vlan_rx_add_vid(struct net_device *netdev,
2182                          __always_unused __be16 proto, u16 vid)
2183 #else
2184 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2185                                 __always_unused __be16 proto, u16 vid)
2186 #endif
2187 {
2188         struct i40e_netdev_priv *np = netdev_priv(netdev);
2189         struct i40e_vsi *vsi = np->vsi;
2190         int ret = 0;
2191
2192         if (vid > 4095)
2193                 return -EINVAL;
2194
2195         netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
2196
2197         /* If the network stack called us with vid = 0 then
2198          * it is asking to receive priority tagged packets with
2199          * vlan id 0.  Our HW receives them by default when configured
2200          * to receive untagged packets so there is no need to add an
2201          * extra filter for vlan 0 tagged packets.
2202          */
2203         if (vid)
2204                 ret = i40e_vsi_add_vlan(vsi, vid);
2205
2206         if (!ret && (vid < VLAN_N_VID))
2207                 set_bit(vid, vsi->active_vlans);
2208
2209         return ret;
2210 }
2211
2212 /**
2213  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2214  * @netdev: network interface to be adjusted
2215  * @vid: vlan id to be removed
2216  *
2217  * net_device_ops implementation for removing vlan ids
2218  **/
2219 #ifdef I40E_FCOE
2220 int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2221                           __always_unused __be16 proto, u16 vid)
2222 #else
2223 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2224                                  __always_unused __be16 proto, u16 vid)
2225 #endif
2226 {
2227         struct i40e_netdev_priv *np = netdev_priv(netdev);
2228         struct i40e_vsi *vsi = np->vsi;
2229
2230         netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
2231
2232         /* return code is ignored as there is nothing a user
2233          * can do about failure to remove and a log message was
2234          * already printed from the other function
2235          */
2236         i40e_vsi_kill_vlan(vsi, vid);
2237
2238         clear_bit(vid, vsi->active_vlans);
2239
2240         return 0;
2241 }
2242
2243 /**
2244  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2245  * @vsi: the vsi being brought back up
2246  **/
2247 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2248 {
2249         u16 vid;
2250
2251         if (!vsi->netdev)
2252                 return;
2253
2254         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2255
2256         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2257                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2258                                      vid);
2259 }
2260
2261 /**
2262  * i40e_vsi_add_pvid - Add pvid for the VSI
2263  * @vsi: the vsi being adjusted
2264  * @vid: the vlan id to set as a PVID
2265  **/
2266 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2267 {
2268         struct i40e_vsi_context ctxt;
2269         i40e_status aq_ret;
2270
2271         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2272         vsi->info.pvid = cpu_to_le16(vid);
2273         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2274                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2275                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2276
2277         ctxt.seid = vsi->seid;
2278         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
2279         aq_ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2280         if (aq_ret) {
2281                 dev_info(&vsi->back->pdev->dev,
2282                          "%s: update vsi failed, aq_err=%d\n",
2283                          __func__, vsi->back->hw.aq.asq_last_status);
2284                 return -ENOENT;
2285         }
2286
2287         return 0;
2288 }
2289
2290 /**
2291  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2292  * @vsi: the vsi being adjusted
2293  *
2294  * Just use the vlan_rx_register() service to put it back to normal
2295  **/
2296 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2297 {
2298         i40e_vlan_stripping_disable(vsi);
2299
2300         vsi->info.pvid = 0;
2301 }
2302
2303 /**
2304  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2305  * @vsi: ptr to the VSI
2306  *
2307  * If this function returns with an error, then it's possible one or
2308  * more of the rings is populated (while the rest are not).  It is the
2309  * callers duty to clean those orphaned rings.
2310  *
2311  * Return 0 on success, negative on failure
2312  **/
2313 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2314 {
2315         int i, err = 0;
2316
2317         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2318                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2319
2320         return err;
2321 }
2322
2323 /**
2324  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2325  * @vsi: ptr to the VSI
2326  *
2327  * Free VSI's transmit software resources
2328  **/
2329 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2330 {
2331         int i;
2332
2333         if (!vsi->tx_rings)
2334                 return;
2335
2336         for (i = 0; i < vsi->num_queue_pairs; i++)
2337                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2338                         i40e_free_tx_resources(vsi->tx_rings[i]);
2339 }
2340
2341 /**
2342  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2343  * @vsi: ptr to the VSI
2344  *
2345  * If this function returns with an error, then it's possible one or
2346  * more of the rings is populated (while the rest are not).  It is the
2347  * callers duty to clean those orphaned rings.
2348  *
2349  * Return 0 on success, negative on failure
2350  **/
2351 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2352 {
2353         int i, err = 0;
2354
2355         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2356                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2357 #ifdef I40E_FCOE
2358         i40e_fcoe_setup_ddp_resources(vsi);
2359 #endif
2360         return err;
2361 }
2362
2363 /**
2364  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2365  * @vsi: ptr to the VSI
2366  *
2367  * Free all receive software resources
2368  **/
2369 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2370 {
2371         int i;
2372
2373         if (!vsi->rx_rings)
2374                 return;
2375
2376         for (i = 0; i < vsi->num_queue_pairs; i++)
2377                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2378                         i40e_free_rx_resources(vsi->rx_rings[i]);
2379 #ifdef I40E_FCOE
2380         i40e_fcoe_free_ddp_resources(vsi);
2381 #endif
2382 }
2383
2384 /**
2385  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2386  * @ring: The Tx ring to configure
2387  *
2388  * Configure the Tx descriptor ring in the HMC context.
2389  **/
2390 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2391 {
2392         struct i40e_vsi *vsi = ring->vsi;
2393         u16 pf_q = vsi->base_queue + ring->queue_index;
2394         struct i40e_hw *hw = &vsi->back->hw;
2395         struct i40e_hmc_obj_txq tx_ctx;
2396         i40e_status err = 0;
2397         u32 qtx_ctl = 0;
2398
2399         /* some ATR related tx ring init */
2400         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2401                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2402                 ring->atr_count = 0;
2403         } else {
2404                 ring->atr_sample_rate = 0;
2405         }
2406
2407         /* initialize XPS */
2408         if (ring->q_vector && ring->netdev &&
2409             vsi->tc_config.numtc <= 1 &&
2410             !test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2411                 netif_set_xps_queue(ring->netdev,
2412                                     &ring->q_vector->affinity_mask,
2413                                     ring->queue_index);
2414
2415         /* clear the context structure first */
2416         memset(&tx_ctx, 0, sizeof(tx_ctx));
2417
2418         tx_ctx.new_context = 1;
2419         tx_ctx.base = (ring->dma / 128);
2420         tx_ctx.qlen = ring->count;
2421         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2422                                                I40E_FLAG_FD_ATR_ENABLED));
2423 #ifdef I40E_FCOE
2424         tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2425 #endif
2426         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2427         /* FDIR VSI tx ring can still use RS bit and writebacks */
2428         if (vsi->type != I40E_VSI_FDIR)
2429                 tx_ctx.head_wb_ena = 1;
2430         tx_ctx.head_wb_addr = ring->dma +
2431                               (ring->count * sizeof(struct i40e_tx_desc));
2432
2433         /* As part of VSI creation/update, FW allocates certain
2434          * Tx arbitration queue sets for each TC enabled for
2435          * the VSI. The FW returns the handles to these queue
2436          * sets as part of the response buffer to Add VSI,
2437          * Update VSI, etc. AQ commands. It is expected that
2438          * these queue set handles be associated with the Tx
2439          * queues by the driver as part of the TX queue context
2440          * initialization. This has to be done regardless of
2441          * DCB as by default everything is mapped to TC0.
2442          */
2443         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2444         tx_ctx.rdylist_act = 0;
2445
2446         /* clear the context in the HMC */
2447         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2448         if (err) {
2449                 dev_info(&vsi->back->pdev->dev,
2450                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2451                          ring->queue_index, pf_q, err);
2452                 return -ENOMEM;
2453         }
2454
2455         /* set the context in the HMC */
2456         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2457         if (err) {
2458                 dev_info(&vsi->back->pdev->dev,
2459                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2460                          ring->queue_index, pf_q, err);
2461                 return -ENOMEM;
2462         }
2463
2464         /* Now associate this queue with this PCI function */
2465         if (vsi->type == I40E_VSI_VMDQ2)
2466                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2467         else
2468                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2469         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2470                     I40E_QTX_CTL_PF_INDX_MASK);
2471         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2472         i40e_flush(hw);
2473
2474         clear_bit(__I40E_HANG_CHECK_ARMED, &ring->state);
2475
2476         /* cache tail off for easier writes later */
2477         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2478
2479         return 0;
2480 }
2481
2482 /**
2483  * i40e_configure_rx_ring - Configure a receive ring context
2484  * @ring: The Rx ring to configure
2485  *
2486  * Configure the Rx descriptor ring in the HMC context.
2487  **/
2488 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2489 {
2490         struct i40e_vsi *vsi = ring->vsi;
2491         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2492         u16 pf_q = vsi->base_queue + ring->queue_index;
2493         struct i40e_hw *hw = &vsi->back->hw;
2494         struct i40e_hmc_obj_rxq rx_ctx;
2495         i40e_status err = 0;
2496
2497         ring->state = 0;
2498
2499         /* clear the context structure first */
2500         memset(&rx_ctx, 0, sizeof(rx_ctx));
2501
2502         ring->rx_buf_len = vsi->rx_buf_len;
2503         ring->rx_hdr_len = vsi->rx_hdr_len;
2504
2505         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2506         rx_ctx.hbuff = ring->rx_hdr_len >> I40E_RXQ_CTX_HBUFF_SHIFT;
2507
2508         rx_ctx.base = (ring->dma / 128);
2509         rx_ctx.qlen = ring->count;
2510
2511         if (vsi->back->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED) {
2512                 set_ring_16byte_desc_enabled(ring);
2513                 rx_ctx.dsize = 0;
2514         } else {
2515                 rx_ctx.dsize = 1;
2516         }
2517
2518         rx_ctx.dtype = vsi->dtype;
2519         if (vsi->dtype) {
2520                 set_ring_ps_enabled(ring);
2521                 rx_ctx.hsplit_0 = I40E_RX_SPLIT_L2      |
2522                                   I40E_RX_SPLIT_IP      |
2523                                   I40E_RX_SPLIT_TCP_UDP |
2524                                   I40E_RX_SPLIT_SCTP;
2525         } else {
2526                 rx_ctx.hsplit_0 = 0;
2527         }
2528
2529         rx_ctx.rxmax = min_t(u16, vsi->max_frame,
2530                                   (chain_len * ring->rx_buf_len));
2531         if (hw->revision_id == 0)
2532                 rx_ctx.lrxqthresh = 0;
2533         else
2534                 rx_ctx.lrxqthresh = 2;
2535         rx_ctx.crcstrip = 1;
2536         rx_ctx.l2tsel = 1;
2537         rx_ctx.showiv = 1;
2538 #ifdef I40E_FCOE
2539         rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2540 #endif
2541         /* set the prefena field to 1 because the manual says to */
2542         rx_ctx.prefena = 1;
2543
2544         /* clear the context in the HMC */
2545         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2546         if (err) {
2547                 dev_info(&vsi->back->pdev->dev,
2548                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2549                          ring->queue_index, pf_q, err);
2550                 return -ENOMEM;
2551         }
2552
2553         /* set the context in the HMC */
2554         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2555         if (err) {
2556                 dev_info(&vsi->back->pdev->dev,
2557                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2558                          ring->queue_index, pf_q, err);
2559                 return -ENOMEM;
2560         }
2561
2562         /* cache tail for quicker writes, and clear the reg before use */
2563         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2564         writel(0, ring->tail);
2565
2566         i40e_alloc_rx_buffers(ring, I40E_DESC_UNUSED(ring));
2567
2568         return 0;
2569 }
2570
2571 /**
2572  * i40e_vsi_configure_tx - Configure the VSI for Tx
2573  * @vsi: VSI structure describing this set of rings and resources
2574  *
2575  * Configure the Tx VSI for operation.
2576  **/
2577 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2578 {
2579         int err = 0;
2580         u16 i;
2581
2582         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2583                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2584
2585         return err;
2586 }
2587
2588 /**
2589  * i40e_vsi_configure_rx - Configure the VSI for Rx
2590  * @vsi: the VSI being configured
2591  *
2592  * Configure the Rx VSI for operation.
2593  **/
2594 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2595 {
2596         int err = 0;
2597         u16 i;
2598
2599         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2600                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2601                                + ETH_FCS_LEN + VLAN_HLEN;
2602         else
2603                 vsi->max_frame = I40E_RXBUFFER_2048;
2604
2605         /* figure out correct receive buffer length */
2606         switch (vsi->back->flags & (I40E_FLAG_RX_1BUF_ENABLED |
2607                                     I40E_FLAG_RX_PS_ENABLED)) {
2608         case I40E_FLAG_RX_1BUF_ENABLED:
2609                 vsi->rx_hdr_len = 0;
2610                 vsi->rx_buf_len = vsi->max_frame;
2611                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2612                 break;
2613         case I40E_FLAG_RX_PS_ENABLED:
2614                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2615                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2616                 vsi->dtype = I40E_RX_DTYPE_HEADER_SPLIT;
2617                 break;
2618         default:
2619                 vsi->rx_hdr_len = I40E_RX_HDR_SIZE;
2620                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
2621                 vsi->dtype = I40E_RX_DTYPE_SPLIT_ALWAYS;
2622                 break;
2623         }
2624
2625 #ifdef I40E_FCOE
2626         /* setup rx buffer for FCoE */
2627         if ((vsi->type == I40E_VSI_FCOE) &&
2628             (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
2629                 vsi->rx_hdr_len = 0;
2630                 vsi->rx_buf_len = I40E_RXBUFFER_3072;
2631                 vsi->max_frame = I40E_RXBUFFER_3072;
2632                 vsi->dtype = I40E_RX_DTYPE_NO_SPLIT;
2633         }
2634
2635 #endif /* I40E_FCOE */
2636         /* round up for the chip's needs */
2637         vsi->rx_hdr_len = ALIGN(vsi->rx_hdr_len,
2638                                 (1 << I40E_RXQ_CTX_HBUFF_SHIFT));
2639         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2640                                 (1 << I40E_RXQ_CTX_DBUFF_SHIFT));
2641
2642         /* set up individual rings */
2643         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2644                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
2645
2646         return err;
2647 }
2648
2649 /**
2650  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
2651  * @vsi: ptr to the VSI
2652  **/
2653 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
2654 {
2655         struct i40e_ring *tx_ring, *rx_ring;
2656         u16 qoffset, qcount;
2657         int i, n;
2658
2659         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED))
2660                 return;
2661
2662         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
2663                 if (!(vsi->tc_config.enabled_tc & (1 << n)))
2664                         continue;
2665
2666                 qoffset = vsi->tc_config.tc_info[n].qoffset;
2667                 qcount = vsi->tc_config.tc_info[n].qcount;
2668                 for (i = qoffset; i < (qoffset + qcount); i++) {
2669                         rx_ring = vsi->rx_rings[i];
2670                         tx_ring = vsi->tx_rings[i];
2671                         rx_ring->dcb_tc = n;
2672                         tx_ring->dcb_tc = n;
2673                 }
2674         }
2675 }
2676
2677 /**
2678  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
2679  * @vsi: ptr to the VSI
2680  **/
2681 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
2682 {
2683         if (vsi->netdev)
2684                 i40e_set_rx_mode(vsi->netdev);
2685 }
2686
2687 /**
2688  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
2689  * @vsi: Pointer to the targeted VSI
2690  *
2691  * This function replays the hlist on the hw where all the SB Flow Director
2692  * filters were saved.
2693  **/
2694 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
2695 {
2696         struct i40e_fdir_filter *filter;
2697         struct i40e_pf *pf = vsi->back;
2698         struct hlist_node *node;
2699
2700         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
2701                 return;
2702
2703         hlist_for_each_entry_safe(filter, node,
2704                                   &pf->fdir_filter_list, fdir_node) {
2705                 i40e_add_del_fdir(vsi, filter, true);
2706         }
2707 }
2708
2709 /**
2710  * i40e_vsi_configure - Set up the VSI for action
2711  * @vsi: the VSI being configured
2712  **/
2713 static int i40e_vsi_configure(struct i40e_vsi *vsi)
2714 {
2715         int err;
2716
2717         i40e_set_vsi_rx_mode(vsi);
2718         i40e_restore_vlan(vsi);
2719         i40e_vsi_config_dcb_rings(vsi);
2720         err = i40e_vsi_configure_tx(vsi);
2721         if (!err)
2722                 err = i40e_vsi_configure_rx(vsi);
2723
2724         return err;
2725 }
2726
2727 /**
2728  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
2729  * @vsi: the VSI being configured
2730  **/
2731 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
2732 {
2733         struct i40e_pf *pf = vsi->back;
2734         struct i40e_q_vector *q_vector;
2735         struct i40e_hw *hw = &pf->hw;
2736         u16 vector;
2737         int i, q;
2738         u32 val;
2739         u32 qp;
2740
2741         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
2742          * and PFINT_LNKLSTn registers, e.g.:
2743          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
2744          */
2745         qp = vsi->base_queue;
2746         vector = vsi->base_vector;
2747         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
2748                 q_vector = vsi->q_vectors[i];
2749                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2750                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
2751                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
2752                      q_vector->rx.itr);
2753                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2754                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
2755                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
2756                      q_vector->tx.itr);
2757
2758                 /* Linked list for the queuepairs assigned to this vector */
2759                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
2760                 for (q = 0; q < q_vector->num_ringpairs; q++) {
2761                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
2762                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
2763                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
2764                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
2765                               (I40E_QUEUE_TYPE_TX
2766                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
2767
2768                         wr32(hw, I40E_QINT_RQCTL(qp), val);
2769
2770                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
2771                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
2772                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
2773                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
2774                               (I40E_QUEUE_TYPE_RX
2775                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2776
2777                         /* Terminate the linked list */
2778                         if (q == (q_vector->num_ringpairs - 1))
2779                                 val |= (I40E_QUEUE_END_OF_LIST
2780                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2781
2782                         wr32(hw, I40E_QINT_TQCTL(qp), val);
2783                         qp++;
2784                 }
2785         }
2786
2787         i40e_flush(hw);
2788 }
2789
2790 /**
2791  * i40e_enable_misc_int_causes - enable the non-queue interrupts
2792  * @hw: ptr to the hardware info
2793  **/
2794 static void i40e_enable_misc_int_causes(struct i40e_hw *hw)
2795 {
2796         u32 val;
2797
2798         /* clear things first */
2799         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
2800         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
2801
2802         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
2803               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
2804               I40E_PFINT_ICR0_ENA_GRST_MASK          |
2805               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
2806               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
2807               I40E_PFINT_ICR0_ENA_TIMESYNC_MASK      |
2808               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
2809               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
2810               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
2811
2812         wr32(hw, I40E_PFINT_ICR0_ENA, val);
2813
2814         /* SW_ITR_IDX = 0, but don't change INTENA */
2815         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
2816                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
2817
2818         /* OTHER_ITR_IDX = 0 */
2819         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
2820 }
2821
2822 /**
2823  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
2824  * @vsi: the VSI being configured
2825  **/
2826 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
2827 {
2828         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
2829         struct i40e_pf *pf = vsi->back;
2830         struct i40e_hw *hw = &pf->hw;
2831         u32 val;
2832
2833         /* set the ITR configuration */
2834         q_vector->rx.itr = ITR_TO_REG(vsi->rx_itr_setting);
2835         q_vector->rx.latency_range = I40E_LOW_LATENCY;
2836         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
2837         q_vector->tx.itr = ITR_TO_REG(vsi->tx_itr_setting);
2838         q_vector->tx.latency_range = I40E_LOW_LATENCY;
2839         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
2840
2841         i40e_enable_misc_int_causes(hw);
2842
2843         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
2844         wr32(hw, I40E_PFINT_LNKLST0, 0);
2845
2846         /* Associate the queue pair to the vector and enable the queue int */
2847         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
2848               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
2849               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
2850
2851         wr32(hw, I40E_QINT_RQCTL(0), val);
2852
2853         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
2854               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
2855               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
2856
2857         wr32(hw, I40E_QINT_TQCTL(0), val);
2858         i40e_flush(hw);
2859 }
2860
2861 /**
2862  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
2863  * @pf: board private structure
2864  **/
2865 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
2866 {
2867         struct i40e_hw *hw = &pf->hw;
2868
2869         wr32(hw, I40E_PFINT_DYN_CTL0,
2870              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
2871         i40e_flush(hw);
2872 }
2873
2874 /**
2875  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
2876  * @pf: board private structure
2877  **/
2878 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
2879 {
2880         struct i40e_hw *hw = &pf->hw;
2881         u32 val;
2882
2883         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
2884               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
2885               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
2886
2887         wr32(hw, I40E_PFINT_DYN_CTL0, val);
2888         i40e_flush(hw);
2889 }
2890
2891 /**
2892  * i40e_irq_dynamic_enable - Enable default interrupt generation settings
2893  * @vsi: pointer to a vsi
2894  * @vector: enable a particular Hw Interrupt vector
2895  **/
2896 void i40e_irq_dynamic_enable(struct i40e_vsi *vsi, int vector)
2897 {
2898         struct i40e_pf *pf = vsi->back;
2899         struct i40e_hw *hw = &pf->hw;
2900         u32 val;
2901
2902         val = I40E_PFINT_DYN_CTLN_INTENA_MASK |
2903               I40E_PFINT_DYN_CTLN_CLEARPBA_MASK |
2904               (I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
2905         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
2906         /* skip the flush */
2907 }
2908
2909 /**
2910  * i40e_irq_dynamic_disable - Disable default interrupt generation settings
2911  * @vsi: pointer to a vsi
2912  * @vector: enable a particular Hw Interrupt vector
2913  **/
2914 void i40e_irq_dynamic_disable(struct i40e_vsi *vsi, int vector)
2915 {
2916         struct i40e_pf *pf = vsi->back;
2917         struct i40e_hw *hw = &pf->hw;
2918         u32 val;
2919
2920         val = I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT;
2921         wr32(hw, I40E_PFINT_DYN_CTLN(vector - 1), val);
2922         i40e_flush(hw);
2923 }
2924
2925 /**
2926  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
2927  * @irq: interrupt number
2928  * @data: pointer to a q_vector
2929  **/
2930 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
2931 {
2932         struct i40e_q_vector *q_vector = data;
2933
2934         if (!q_vector->tx.ring && !q_vector->rx.ring)
2935                 return IRQ_HANDLED;
2936
2937         napi_schedule(&q_vector->napi);
2938
2939         return IRQ_HANDLED;
2940 }
2941
2942 /**
2943  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
2944  * @vsi: the VSI being configured
2945  * @basename: name for the vector
2946  *
2947  * Allocates MSI-X vectors and requests interrupts from the kernel.
2948  **/
2949 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
2950 {
2951         int q_vectors = vsi->num_q_vectors;
2952         struct i40e_pf *pf = vsi->back;
2953         int base = vsi->base_vector;
2954         int rx_int_idx = 0;
2955         int tx_int_idx = 0;
2956         int vector, err;
2957
2958         for (vector = 0; vector < q_vectors; vector++) {
2959                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
2960
2961                 if (q_vector->tx.ring && q_vector->rx.ring) {
2962                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2963                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
2964                         tx_int_idx++;
2965                 } else if (q_vector->rx.ring) {
2966                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2967                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
2968                 } else if (q_vector->tx.ring) {
2969                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
2970                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
2971                 } else {
2972                         /* skip this unused q_vector */
2973                         continue;
2974                 }
2975                 err = request_irq(pf->msix_entries[base + vector].vector,
2976                                   vsi->irq_handler,
2977                                   0,
2978                                   q_vector->name,
2979                                   q_vector);
2980                 if (err) {
2981                         dev_info(&pf->pdev->dev,
2982                                  "%s: request_irq failed, error: %d\n",
2983                                  __func__, err);
2984                         goto free_queue_irqs;
2985                 }
2986                 /* assign the mask for this irq */
2987                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
2988                                       &q_vector->affinity_mask);
2989         }
2990
2991         vsi->irqs_ready = true;
2992         return 0;
2993
2994 free_queue_irqs:
2995         while (vector) {
2996                 vector--;
2997                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
2998                                       NULL);
2999                 free_irq(pf->msix_entries[base + vector].vector,
3000                          &(vsi->q_vectors[vector]));
3001         }
3002         return err;
3003 }
3004
3005 /**
3006  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3007  * @vsi: the VSI being un-configured
3008  **/
3009 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3010 {
3011         struct i40e_pf *pf = vsi->back;
3012         struct i40e_hw *hw = &pf->hw;
3013         int base = vsi->base_vector;
3014         int i;
3015
3016         for (i = 0; i < vsi->num_queue_pairs; i++) {
3017                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3018                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3019         }
3020
3021         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3022                 for (i = vsi->base_vector;
3023                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3024                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3025
3026                 i40e_flush(hw);
3027                 for (i = 0; i < vsi->num_q_vectors; i++)
3028                         synchronize_irq(pf->msix_entries[i + base].vector);
3029         } else {
3030                 /* Legacy and MSI mode - this stops all interrupt handling */
3031                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3032                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3033                 i40e_flush(hw);
3034                 synchronize_irq(pf->pdev->irq);
3035         }
3036 }
3037
3038 /**
3039  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3040  * @vsi: the VSI being configured
3041  **/
3042 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3043 {
3044         struct i40e_pf *pf = vsi->back;
3045         int i;
3046
3047         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3048                 for (i = vsi->base_vector;
3049                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3050                         i40e_irq_dynamic_enable(vsi, i);
3051         } else {
3052                 i40e_irq_dynamic_enable_icr0(pf);
3053         }
3054
3055         i40e_flush(&pf->hw);
3056         return 0;
3057 }
3058
3059 /**
3060  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3061  * @pf: board private structure
3062  **/
3063 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3064 {
3065         /* Disable ICR 0 */
3066         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3067         i40e_flush(&pf->hw);
3068 }
3069
3070 /**
3071  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3072  * @irq: interrupt number
3073  * @data: pointer to a q_vector
3074  *
3075  * This is the handler used for all MSI/Legacy interrupts, and deals
3076  * with both queue and non-queue interrupts.  This is also used in
3077  * MSIX mode to handle the non-queue interrupts.
3078  **/
3079 static irqreturn_t i40e_intr(int irq, void *data)
3080 {
3081         struct i40e_pf *pf = (struct i40e_pf *)data;
3082         struct i40e_hw *hw = &pf->hw;
3083         irqreturn_t ret = IRQ_NONE;
3084         u32 icr0, icr0_remaining;
3085         u32 val, ena_mask;
3086
3087         icr0 = rd32(hw, I40E_PFINT_ICR0);
3088         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3089
3090         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3091         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3092                 goto enable_intr;
3093
3094         /* if interrupt but no bits showing, must be SWINT */
3095         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3096             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3097                 pf->sw_int_count++;
3098
3099         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3100         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3101
3102                 /* temporarily disable queue cause for NAPI processing */
3103                 u32 qval = rd32(hw, I40E_QINT_RQCTL(0));
3104                 qval &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
3105                 wr32(hw, I40E_QINT_RQCTL(0), qval);
3106
3107                 qval = rd32(hw, I40E_QINT_TQCTL(0));
3108                 qval &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
3109                 wr32(hw, I40E_QINT_TQCTL(0), qval);
3110
3111                 if (!test_bit(__I40E_DOWN, &pf->state))
3112                         napi_schedule(&pf->vsi[pf->lan_vsi]->q_vectors[0]->napi);
3113         }
3114
3115         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3116                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3117                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3118         }
3119
3120         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3121                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3122                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3123         }
3124
3125         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3126                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3127                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3128         }
3129
3130         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3131                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3132                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3133                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3134                 val = rd32(hw, I40E_GLGEN_RSTAT);
3135                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3136                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3137                 if (val == I40E_RESET_CORER) {
3138                         pf->corer_count++;
3139                 } else if (val == I40E_RESET_GLOBR) {
3140                         pf->globr_count++;
3141                 } else if (val == I40E_RESET_EMPR) {
3142                         pf->empr_count++;
3143                         set_bit(__I40E_EMP_RESET_REQUESTED, &pf->state);
3144                 }
3145         }
3146
3147         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3148                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3149                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3150         }
3151
3152         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3153                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3154
3155                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3156                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3157                         i40e_ptp_tx_hwtstamp(pf);
3158                 }
3159         }
3160
3161         /* If a critical error is pending we have no choice but to reset the
3162          * device.
3163          * Report and mask out any remaining unexpected interrupts.
3164          */
3165         icr0_remaining = icr0 & ena_mask;
3166         if (icr0_remaining) {
3167                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3168                          icr0_remaining);
3169                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3170                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3171                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3172                         dev_info(&pf->pdev->dev, "device will be reset\n");
3173                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3174                         i40e_service_event_schedule(pf);
3175                 }
3176                 ena_mask &= ~icr0_remaining;
3177         }
3178         ret = IRQ_HANDLED;
3179
3180 enable_intr:
3181         /* re-enable interrupt causes */
3182         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3183         if (!test_bit(__I40E_DOWN, &pf->state)) {
3184                 i40e_service_event_schedule(pf);
3185                 i40e_irq_dynamic_enable_icr0(pf);
3186         }
3187
3188         return ret;
3189 }
3190
3191 /**
3192  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3193  * @tx_ring:  tx ring to clean
3194  * @budget:   how many cleans we're allowed
3195  *
3196  * Returns true if there's any budget left (e.g. the clean is finished)
3197  **/
3198 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3199 {
3200         struct i40e_vsi *vsi = tx_ring->vsi;
3201         u16 i = tx_ring->next_to_clean;
3202         struct i40e_tx_buffer *tx_buf;
3203         struct i40e_tx_desc *tx_desc;
3204
3205         tx_buf = &tx_ring->tx_bi[i];
3206         tx_desc = I40E_TX_DESC(tx_ring, i);
3207         i -= tx_ring->count;
3208
3209         do {
3210                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3211
3212                 /* if next_to_watch is not set then there is no work pending */
3213                 if (!eop_desc)
3214                         break;
3215
3216                 /* prevent any other reads prior to eop_desc */
3217                 read_barrier_depends();
3218
3219                 /* if the descriptor isn't done, no work yet to do */
3220                 if (!(eop_desc->cmd_type_offset_bsz &
3221                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3222                         break;
3223
3224                 /* clear next_to_watch to prevent false hangs */
3225                 tx_buf->next_to_watch = NULL;
3226
3227                 tx_desc->buffer_addr = 0;
3228                 tx_desc->cmd_type_offset_bsz = 0;
3229                 /* move past filter desc */
3230                 tx_buf++;
3231                 tx_desc++;
3232                 i++;
3233                 if (unlikely(!i)) {
3234                         i -= tx_ring->count;
3235                         tx_buf = tx_ring->tx_bi;
3236                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3237                 }
3238                 /* unmap skb header data */
3239                 dma_unmap_single(tx_ring->dev,
3240                                  dma_unmap_addr(tx_buf, dma),
3241                                  dma_unmap_len(tx_buf, len),
3242                                  DMA_TO_DEVICE);
3243                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3244                         kfree(tx_buf->raw_buf);
3245
3246                 tx_buf->raw_buf = NULL;
3247                 tx_buf->tx_flags = 0;
3248                 tx_buf->next_to_watch = NULL;
3249                 dma_unmap_len_set(tx_buf, len, 0);
3250                 tx_desc->buffer_addr = 0;
3251                 tx_desc->cmd_type_offset_bsz = 0;
3252
3253                 /* move us past the eop_desc for start of next FD desc */
3254                 tx_buf++;
3255                 tx_desc++;
3256                 i++;
3257                 if (unlikely(!i)) {
3258                         i -= tx_ring->count;
3259                         tx_buf = tx_ring->tx_bi;
3260                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3261                 }
3262
3263                 /* update budget accounting */
3264                 budget--;
3265         } while (likely(budget));
3266
3267         i += tx_ring->count;
3268         tx_ring->next_to_clean = i;
3269
3270         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED) {
3271                 i40e_irq_dynamic_enable(vsi,
3272                                 tx_ring->q_vector->v_idx + vsi->base_vector);
3273         }
3274         return budget > 0;
3275 }
3276
3277 /**
3278  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3279  * @irq: interrupt number
3280  * @data: pointer to a q_vector
3281  **/
3282 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3283 {
3284         struct i40e_q_vector *q_vector = data;
3285         struct i40e_vsi *vsi;
3286
3287         if (!q_vector->tx.ring)
3288                 return IRQ_HANDLED;
3289
3290         vsi = q_vector->tx.ring->vsi;
3291         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3292
3293         return IRQ_HANDLED;
3294 }
3295
3296 /**
3297  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3298  * @vsi: the VSI being configured
3299  * @v_idx: vector index
3300  * @qp_idx: queue pair index
3301  **/
3302 static void map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3303 {
3304         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3305         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3306         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3307
3308         tx_ring->q_vector = q_vector;
3309         tx_ring->next = q_vector->tx.ring;
3310         q_vector->tx.ring = tx_ring;
3311         q_vector->tx.count++;
3312
3313         rx_ring->q_vector = q_vector;
3314         rx_ring->next = q_vector->rx.ring;
3315         q_vector->rx.ring = rx_ring;
3316         q_vector->rx.count++;
3317 }
3318
3319 /**
3320  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3321  * @vsi: the VSI being configured
3322  *
3323  * This function maps descriptor rings to the queue-specific vectors
3324  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3325  * one vector per queue pair, but on a constrained vector budget, we
3326  * group the queue pairs as "efficiently" as possible.
3327  **/
3328 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3329 {
3330         int qp_remaining = vsi->num_queue_pairs;
3331         int q_vectors = vsi->num_q_vectors;
3332         int num_ringpairs;
3333         int v_start = 0;
3334         int qp_idx = 0;
3335
3336         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3337          * group them so there are multiple queues per vector.
3338          * It is also important to go through all the vectors available to be
3339          * sure that if we don't use all the vectors, that the remaining vectors
3340          * are cleared. This is especially important when decreasing the
3341          * number of queues in use.
3342          */
3343         for (; v_start < q_vectors; v_start++) {
3344                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3345
3346                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3347
3348                 q_vector->num_ringpairs = num_ringpairs;
3349
3350                 q_vector->rx.count = 0;
3351                 q_vector->tx.count = 0;
3352                 q_vector->rx.ring = NULL;
3353                 q_vector->tx.ring = NULL;
3354
3355                 while (num_ringpairs--) {
3356                         map_vector_to_qp(vsi, v_start, qp_idx);
3357                         qp_idx++;
3358                         qp_remaining--;
3359                 }
3360         }
3361 }
3362
3363 /**
3364  * i40e_vsi_request_irq - Request IRQ from the OS
3365  * @vsi: the VSI being configured
3366  * @basename: name for the vector
3367  **/
3368 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3369 {
3370         struct i40e_pf *pf = vsi->back;
3371         int err;
3372
3373         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3374                 err = i40e_vsi_request_irq_msix(vsi, basename);
3375         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3376                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3377                                   pf->misc_int_name, pf);
3378         else
3379                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3380                                   pf->misc_int_name, pf);
3381
3382         if (err)
3383                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3384
3385         return err;
3386 }
3387
3388 #ifdef CONFIG_NET_POLL_CONTROLLER
3389 /**
3390  * i40e_netpoll - A Polling 'interrupt'handler
3391  * @netdev: network interface device structure
3392  *
3393  * This is used by netconsole to send skbs without having to re-enable
3394  * interrupts.  It's not called while the normal interrupt routine is executing.
3395  **/
3396 #ifdef I40E_FCOE
3397 void i40e_netpoll(struct net_device *netdev)
3398 #else
3399 static void i40e_netpoll(struct net_device *netdev)
3400 #endif
3401 {
3402         struct i40e_netdev_priv *np = netdev_priv(netdev);
3403         struct i40e_vsi *vsi = np->vsi;
3404         struct i40e_pf *pf = vsi->back;
3405         int i;
3406
3407         /* if interface is down do nothing */
3408         if (test_bit(__I40E_DOWN, &vsi->state))
3409                 return;
3410
3411         pf->flags |= I40E_FLAG_IN_NETPOLL;
3412         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3413                 for (i = 0; i < vsi->num_q_vectors; i++)
3414                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3415         } else {
3416                 i40e_intr(pf->pdev->irq, netdev);
3417         }
3418         pf->flags &= ~I40E_FLAG_IN_NETPOLL;
3419 }
3420 #endif
3421
3422 /**
3423  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3424  * @pf: the PF being configured
3425  * @pf_q: the PF queue
3426  * @enable: enable or disable state of the queue
3427  *
3428  * This routine will wait for the given Tx queue of the PF to reach the
3429  * enabled or disabled state.
3430  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3431  * multiple retries; else will return 0 in case of success.
3432  **/
3433 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3434 {
3435         int i;
3436         u32 tx_reg;
3437
3438         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3439                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3440                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3441                         break;
3442
3443                 udelay(10);
3444         }
3445         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3446                 return -ETIMEDOUT;
3447
3448         return 0;
3449 }
3450
3451 /**
3452  * i40e_vsi_control_tx - Start or stop a VSI's rings
3453  * @vsi: the VSI being configured
3454  * @enable: start or stop the rings
3455  **/
3456 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3457 {
3458         struct i40e_pf *pf = vsi->back;
3459         struct i40e_hw *hw = &pf->hw;
3460         int i, j, pf_q, ret = 0;
3461         u32 tx_reg;
3462
3463         pf_q = vsi->base_queue;
3464         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3465
3466                 /* warn the TX unit of coming changes */
3467                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3468                 if (!enable)
3469                         udelay(10);
3470
3471                 for (j = 0; j < 50; j++) {
3472                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3473                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3474                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3475                                 break;
3476                         usleep_range(1000, 2000);
3477                 }
3478                 /* Skip if the queue is already in the requested state */
3479                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3480                         continue;
3481
3482                 /* turn on/off the queue */
3483                 if (enable) {
3484                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3485                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3486                 } else {
3487                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3488                 }
3489
3490                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3491
3492                 /* wait for the change to finish */
3493                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3494                 if (ret) {
3495                         dev_info(&pf->pdev->dev,
3496                                  "%s: VSI seid %d Tx ring %d %sable timeout\n",
3497                                  __func__, vsi->seid, pf_q,
3498                                  (enable ? "en" : "dis"));
3499                         break;
3500                 }
3501         }
3502
3503         if (hw->revision_id == 0)
3504                 mdelay(50);
3505         return ret;
3506 }
3507
3508 /**
3509  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
3510  * @pf: the PF being configured
3511  * @pf_q: the PF queue
3512  * @enable: enable or disable state of the queue
3513  *
3514  * This routine will wait for the given Rx queue of the PF to reach the
3515  * enabled or disabled state.
3516  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3517  * multiple retries; else will return 0 in case of success.
3518  **/
3519 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3520 {
3521         int i;
3522         u32 rx_reg;
3523
3524         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3525                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
3526                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3527                         break;
3528
3529                 udelay(10);
3530         }
3531         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3532                 return -ETIMEDOUT;
3533
3534         return 0;
3535 }
3536
3537 /**
3538  * i40e_vsi_control_rx - Start or stop a VSI's rings
3539  * @vsi: the VSI being configured
3540  * @enable: start or stop the rings
3541  **/
3542 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3543 {
3544         struct i40e_pf *pf = vsi->back;
3545         struct i40e_hw *hw = &pf->hw;
3546         int i, j, pf_q, ret = 0;
3547         u32 rx_reg;
3548
3549         pf_q = vsi->base_queue;
3550         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3551                 for (j = 0; j < 50; j++) {
3552                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3553                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3554                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3555                                 break;
3556                         usleep_range(1000, 2000);
3557                 }
3558
3559                 /* Skip if the queue is already in the requested state */
3560                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3561                         continue;
3562
3563                 /* turn on/off the queue */
3564                 if (enable)
3565                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3566                 else
3567                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3568                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3569
3570                 /* wait for the change to finish */
3571                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
3572                 if (ret) {
3573                         dev_info(&pf->pdev->dev,
3574                                  "%s: VSI seid %d Rx ring %d %sable timeout\n",
3575                                  __func__, vsi->seid, pf_q,
3576                                  (enable ? "en" : "dis"));
3577                         break;
3578                 }
3579         }
3580
3581         return ret;
3582 }
3583
3584 /**
3585  * i40e_vsi_control_rings - Start or stop a VSI's rings
3586  * @vsi: the VSI being configured
3587  * @enable: start or stop the rings
3588  **/
3589 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3590 {
3591         int ret = 0;
3592
3593         /* do rx first for enable and last for disable */
3594         if (request) {
3595                 ret = i40e_vsi_control_rx(vsi, request);
3596                 if (ret)
3597                         return ret;
3598                 ret = i40e_vsi_control_tx(vsi, request);
3599         } else {
3600                 /* Ignore return value, we need to shutdown whatever we can */
3601                 i40e_vsi_control_tx(vsi, request);
3602                 i40e_vsi_control_rx(vsi, request);
3603         }
3604
3605         return ret;
3606 }
3607
3608 /**
3609  * i40e_vsi_free_irq - Free the irq association with the OS
3610  * @vsi: the VSI being configured
3611  **/
3612 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3613 {
3614         struct i40e_pf *pf = vsi->back;
3615         struct i40e_hw *hw = &pf->hw;
3616         int base = vsi->base_vector;
3617         u32 val, qp;
3618         int i;
3619
3620         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3621                 if (!vsi->q_vectors)
3622                         return;
3623
3624                 if (!vsi->irqs_ready)
3625                         return;
3626
3627                 vsi->irqs_ready = false;
3628                 for (i = 0; i < vsi->num_q_vectors; i++) {
3629                         u16 vector = i + base;
3630
3631                         /* free only the irqs that were actually requested */
3632                         if (!vsi->q_vectors[i] ||
3633                             !vsi->q_vectors[i]->num_ringpairs)
3634                                 continue;
3635
3636                         /* clear the affinity_mask in the IRQ descriptor */
3637                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
3638                                               NULL);
3639                         free_irq(pf->msix_entries[vector].vector,
3640                                  vsi->q_vectors[i]);
3641
3642                         /* Tear down the interrupt queue link list
3643                          *
3644                          * We know that they come in pairs and always
3645                          * the Rx first, then the Tx.  To clear the
3646                          * link list, stick the EOL value into the
3647                          * next_q field of the registers.
3648                          */
3649                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
3650                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3651                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3652                         val |= I40E_QUEUE_END_OF_LIST
3653                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3654                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
3655
3656                         while (qp != I40E_QUEUE_END_OF_LIST) {
3657                                 u32 next;
3658
3659                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3660
3661                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3662                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3663                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3664                                          I40E_QINT_RQCTL_INTEVENT_MASK);
3665
3666                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3667                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3668
3669                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3670
3671                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3672
3673                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
3674                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
3675
3676                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3677                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3678                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3679                                          I40E_QINT_TQCTL_INTEVENT_MASK);
3680
3681                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3682                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3683
3684                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3685                                 qp = next;
3686                         }
3687                 }
3688         } else {
3689                 free_irq(pf->pdev->irq, pf);
3690
3691                 val = rd32(hw, I40E_PFINT_LNKLST0);
3692                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3693                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3694                 val |= I40E_QUEUE_END_OF_LIST
3695                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
3696                 wr32(hw, I40E_PFINT_LNKLST0, val);
3697
3698                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3699                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3700                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3701                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3702                          I40E_QINT_RQCTL_INTEVENT_MASK);
3703
3704                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3705                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3706
3707                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3708
3709                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3710
3711                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3712                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3713                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3714                          I40E_QINT_TQCTL_INTEVENT_MASK);
3715
3716                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3717                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3718
3719                 wr32(hw, I40E_QINT_TQCTL(qp), val);
3720         }
3721 }
3722
3723 /**
3724  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
3725  * @vsi: the VSI being configured
3726  * @v_idx: Index of vector to be freed
3727  *
3728  * This function frees the memory allocated to the q_vector.  In addition if
3729  * NAPI is enabled it will delete any references to the NAPI struct prior
3730  * to freeing the q_vector.
3731  **/
3732 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
3733 {
3734         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3735         struct i40e_ring *ring;
3736
3737         if (!q_vector)
3738                 return;
3739
3740         /* disassociate q_vector from rings */
3741         i40e_for_each_ring(ring, q_vector->tx)
3742                 ring->q_vector = NULL;
3743
3744         i40e_for_each_ring(ring, q_vector->rx)
3745                 ring->q_vector = NULL;
3746
3747         /* only VSI w/ an associated netdev is set up w/ NAPI */
3748         if (vsi->netdev)
3749                 netif_napi_del(&q_vector->napi);
3750
3751         vsi->q_vectors[v_idx] = NULL;
3752
3753         kfree_rcu(q_vector, rcu);
3754 }
3755
3756 /**
3757  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
3758  * @vsi: the VSI being un-configured
3759  *
3760  * This frees the memory allocated to the q_vectors and
3761  * deletes references to the NAPI struct.
3762  **/
3763 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
3764 {
3765         int v_idx;
3766
3767         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
3768                 i40e_free_q_vector(vsi, v_idx);
3769 }
3770
3771 /**
3772  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
3773  * @pf: board private structure
3774  **/
3775 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
3776 {
3777         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
3778         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3779                 pci_disable_msix(pf->pdev);
3780                 kfree(pf->msix_entries);
3781                 pf->msix_entries = NULL;
3782         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
3783                 pci_disable_msi(pf->pdev);
3784         }
3785         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
3786 }
3787
3788 /**
3789  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
3790  * @pf: board private structure
3791  *
3792  * We go through and clear interrupt specific resources and reset the structure
3793  * to pre-load conditions
3794  **/
3795 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
3796 {
3797         int i;
3798
3799         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
3800         for (i = 0; i < pf->num_alloc_vsi; i++)
3801                 if (pf->vsi[i])
3802                         i40e_vsi_free_q_vectors(pf->vsi[i]);
3803         i40e_reset_interrupt_capability(pf);
3804 }
3805
3806 /**
3807  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
3808  * @vsi: the VSI being configured
3809  **/
3810 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
3811 {
3812         int q_idx;
3813
3814         if (!vsi->netdev)
3815                 return;
3816
3817         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3818                 napi_enable(&vsi->q_vectors[q_idx]->napi);
3819 }
3820
3821 /**
3822  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
3823  * @vsi: the VSI being configured
3824  **/
3825 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
3826 {
3827         int q_idx;
3828
3829         if (!vsi->netdev)
3830                 return;
3831
3832         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
3833                 napi_disable(&vsi->q_vectors[q_idx]->napi);
3834 }
3835
3836 /**
3837  * i40e_vsi_close - Shut down a VSI
3838  * @vsi: the vsi to be quelled
3839  **/
3840 static void i40e_vsi_close(struct i40e_vsi *vsi)
3841 {
3842         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
3843                 i40e_down(vsi);
3844         i40e_vsi_free_irq(vsi);
3845         i40e_vsi_free_tx_resources(vsi);
3846         i40e_vsi_free_rx_resources(vsi);
3847 }
3848
3849 /**
3850  * i40e_quiesce_vsi - Pause a given VSI
3851  * @vsi: the VSI being paused
3852  **/
3853 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
3854 {
3855         if (test_bit(__I40E_DOWN, &vsi->state))
3856                 return;
3857
3858         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
3859         if (vsi->netdev && netif_running(vsi->netdev)) {
3860                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
3861         } else {
3862                 i40e_vsi_close(vsi);
3863         }
3864 }
3865
3866 /**
3867  * i40e_unquiesce_vsi - Resume a given VSI
3868  * @vsi: the VSI being resumed
3869  **/
3870 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
3871 {
3872         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
3873                 return;
3874
3875         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
3876         if (vsi->netdev && netif_running(vsi->netdev))
3877                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
3878         else
3879                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
3880 }
3881
3882 /**
3883  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
3884  * @pf: the PF
3885  **/
3886 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
3887 {
3888         int v;
3889
3890         for (v = 0; v < pf->num_alloc_vsi; v++) {
3891                 if (pf->vsi[v])
3892                         i40e_quiesce_vsi(pf->vsi[v]);
3893         }
3894 }
3895
3896 /**
3897  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
3898  * @pf: the PF
3899  **/
3900 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
3901 {
3902         int v;
3903
3904         for (v = 0; v < pf->num_alloc_vsi; v++) {
3905                 if (pf->vsi[v])
3906                         i40e_unquiesce_vsi(pf->vsi[v]);
3907         }
3908 }
3909
3910 /**
3911  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
3912  * @dcbcfg: the corresponding DCBx configuration structure
3913  *
3914  * Return the number of TCs from given DCBx configuration
3915  **/
3916 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
3917 {
3918         u8 num_tc = 0;
3919         int i;
3920
3921         /* Scan the ETS Config Priority Table to find
3922          * traffic class enabled for a given priority
3923          * and use the traffic class index to get the
3924          * number of traffic classes enabled
3925          */
3926         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
3927                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
3928                         num_tc = dcbcfg->etscfg.prioritytable[i];
3929         }
3930
3931         /* Traffic class index starts from zero so
3932          * increment to return the actual count
3933          */
3934         return num_tc + 1;
3935 }
3936
3937 /**
3938  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
3939  * @dcbcfg: the corresponding DCBx configuration structure
3940  *
3941  * Query the current DCB configuration and return the number of
3942  * traffic classes enabled from the given DCBX config
3943  **/
3944 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
3945 {
3946         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
3947         u8 enabled_tc = 1;
3948         u8 i;
3949
3950         for (i = 0; i < num_tc; i++)
3951                 enabled_tc |= 1 << i;
3952
3953         return enabled_tc;
3954 }
3955
3956 /**
3957  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
3958  * @pf: PF being queried
3959  *
3960  * Return number of traffic classes enabled for the given PF
3961  **/
3962 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
3963 {
3964         struct i40e_hw *hw = &pf->hw;
3965         u8 i, enabled_tc;
3966         u8 num_tc = 0;
3967         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
3968
3969         /* If DCB is not enabled then always in single TC */
3970         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
3971                 return 1;
3972
3973         /* MFP mode return count of enabled TCs for this PF */
3974         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
3975                 enabled_tc = pf->hw.func_caps.enabled_tcmap;
3976                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
3977                         if (enabled_tc & (1 << i))
3978                                 num_tc++;
3979                 }
3980                 return num_tc;
3981         }
3982
3983         /* SFP mode will be enabled for all TCs on port */
3984         return i40e_dcb_get_num_tc(dcbcfg);
3985 }
3986
3987 /**
3988  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
3989  * @pf: PF being queried
3990  *
3991  * Return a bitmap for first enabled traffic class for this PF.
3992  **/
3993 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
3994 {
3995         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
3996         u8 i = 0;
3997
3998         if (!enabled_tc)
3999                 return 0x1; /* TC0 */
4000
4001         /* Find the first enabled TC */
4002         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4003                 if (enabled_tc & (1 << i))
4004                         break;
4005         }
4006
4007         return 1 << i;
4008 }
4009
4010 /**
4011  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4012  * @pf: PF being queried
4013  *
4014  * Return a bitmap for enabled traffic classes for this PF.
4015  **/
4016 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4017 {
4018         /* If DCB is not enabled for this PF then just return default TC */
4019         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4020                 return i40e_pf_get_default_tc(pf);
4021
4022         /* MFP mode will have enabled TCs set by FW */
4023         if (pf->flags & I40E_FLAG_MFP_ENABLED)
4024                 return pf->hw.func_caps.enabled_tcmap;
4025
4026         /* SFP mode we want PF to be enabled for all TCs */
4027         return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4028 }
4029
4030 /**
4031  * i40e_vsi_get_bw_info - Query VSI BW Information
4032  * @vsi: the VSI being queried
4033  *
4034  * Returns 0 on success, negative value on failure
4035  **/
4036 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4037 {
4038         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4039         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4040         struct i40e_pf *pf = vsi->back;
4041         struct i40e_hw *hw = &pf->hw;
4042         i40e_status aq_ret;
4043         u32 tc_bw_max;
4044         int i;
4045
4046         /* Get the VSI level BW configuration */
4047         aq_ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4048         if (aq_ret) {
4049                 dev_info(&pf->pdev->dev,
4050                          "couldn't get pf vsi bw config, err %d, aq_err %d\n",
4051                          aq_ret, pf->hw.aq.asq_last_status);
4052                 return -EINVAL;
4053         }
4054
4055         /* Get the VSI level BW configuration per TC */
4056         aq_ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4057                                                   NULL);
4058         if (aq_ret) {
4059                 dev_info(&pf->pdev->dev,
4060                          "couldn't get pf vsi ets bw config, err %d, aq_err %d\n",
4061                          aq_ret, pf->hw.aq.asq_last_status);
4062                 return -EINVAL;
4063         }
4064
4065         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4066                 dev_info(&pf->pdev->dev,
4067                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4068                          bw_config.tc_valid_bits,
4069                          bw_ets_config.tc_valid_bits);
4070                 /* Still continuing */
4071         }
4072
4073         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4074         vsi->bw_max_quanta = bw_config.max_bw;
4075         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4076                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4077         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4078                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4079                 vsi->bw_ets_limit_credits[i] =
4080                                         le16_to_cpu(bw_ets_config.credits[i]);
4081                 /* 3 bits out of 4 for each TC */
4082                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4083         }
4084
4085         return 0;
4086 }
4087
4088 /**
4089  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4090  * @vsi: the VSI being configured
4091  * @enabled_tc: TC bitmap
4092  * @bw_credits: BW shared credits per TC
4093  *
4094  * Returns 0 on success, negative value on failure
4095  **/
4096 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4097                                        u8 *bw_share)
4098 {
4099         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4100         i40e_status aq_ret;
4101         int i;
4102
4103         bw_data.tc_valid_bits = enabled_tc;
4104         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4105                 bw_data.tc_bw_credits[i] = bw_share[i];
4106
4107         aq_ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4108                                           NULL);
4109         if (aq_ret) {
4110                 dev_info(&vsi->back->pdev->dev,
4111                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4112                          vsi->back->hw.aq.asq_last_status);
4113                 return -EINVAL;
4114         }
4115
4116         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4117                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4118
4119         return 0;
4120 }
4121
4122 /**
4123  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4124  * @vsi: the VSI being configured
4125  * @enabled_tc: TC map to be enabled
4126  *
4127  **/
4128 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4129 {
4130         struct net_device *netdev = vsi->netdev;
4131         struct i40e_pf *pf = vsi->back;
4132         struct i40e_hw *hw = &pf->hw;
4133         u8 netdev_tc = 0;
4134         int i;
4135         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4136
4137         if (!netdev)
4138                 return;
4139
4140         if (!enabled_tc) {
4141                 netdev_reset_tc(netdev);
4142                 return;
4143         }
4144
4145         /* Set up actual enabled TCs on the VSI */
4146         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4147                 return;
4148
4149         /* set per TC queues for the VSI */
4150         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4151                 /* Only set TC queues for enabled tcs
4152                  *
4153                  * e.g. For a VSI that has TC0 and TC3 enabled the
4154                  * enabled_tc bitmap would be 0x00001001; the driver
4155                  * will set the numtc for netdev as 2 that will be
4156                  * referenced by the netdev layer as TC 0 and 1.
4157                  */
4158                 if (vsi->tc_config.enabled_tc & (1 << i))
4159                         netdev_set_tc_queue(netdev,
4160                                         vsi->tc_config.tc_info[i].netdev_tc,
4161                                         vsi->tc_config.tc_info[i].qcount,
4162                                         vsi->tc_config.tc_info[i].qoffset);
4163         }
4164
4165         /* Assign UP2TC map for the VSI */
4166         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4167                 /* Get the actual TC# for the UP */
4168                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4169                 /* Get the mapped netdev TC# for the UP */
4170                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4171                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4172         }
4173 }
4174
4175 /**
4176  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4177  * @vsi: the VSI being configured
4178  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4179  **/
4180 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4181                                       struct i40e_vsi_context *ctxt)
4182 {
4183         /* copy just the sections touched not the entire info
4184          * since not all sections are valid as returned by
4185          * update vsi params
4186          */
4187         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4188         memcpy(&vsi->info.queue_mapping,
4189                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4190         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4191                sizeof(vsi->info.tc_mapping));
4192 }
4193
4194 /**
4195  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4196  * @vsi: VSI to be configured
4197  * @enabled_tc: TC bitmap
4198  *
4199  * This configures a particular VSI for TCs that are mapped to the
4200  * given TC bitmap. It uses default bandwidth share for TCs across
4201  * VSIs to configure TC for a particular VSI.
4202  *
4203  * NOTE:
4204  * It is expected that the VSI queues have been quisced before calling
4205  * this function.
4206  **/
4207 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4208 {
4209         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4210         struct i40e_vsi_context ctxt;
4211         int ret = 0;
4212         int i;
4213
4214         /* Check if enabled_tc is same as existing or new TCs */
4215         if (vsi->tc_config.enabled_tc == enabled_tc)
4216                 return ret;
4217
4218         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4219         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4220                 if (enabled_tc & (1 << i))
4221                         bw_share[i] = 1;
4222         }
4223
4224         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4225         if (ret) {
4226                 dev_info(&vsi->back->pdev->dev,
4227                          "Failed configuring TC map %d for VSI %d\n",
4228                          enabled_tc, vsi->seid);
4229                 goto out;
4230         }
4231
4232         /* Update Queue Pairs Mapping for currently enabled UPs */
4233         ctxt.seid = vsi->seid;
4234         ctxt.pf_num = vsi->back->hw.pf_id;
4235         ctxt.vf_num = 0;
4236         ctxt.uplink_seid = vsi->uplink_seid;
4237         memcpy(&ctxt.info, &vsi->info, sizeof(vsi->info));
4238         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4239
4240         /* Update the VSI after updating the VSI queue-mapping information */
4241         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4242         if (ret) {
4243                 dev_info(&vsi->back->pdev->dev,
4244                          "update vsi failed, aq_err=%d\n",
4245                          vsi->back->hw.aq.asq_last_status);
4246                 goto out;
4247         }
4248         /* update the local VSI info with updated queue map */
4249         i40e_vsi_update_queue_map(vsi, &ctxt);
4250         vsi->info.valid_sections = 0;
4251
4252         /* Update current VSI BW information */
4253         ret = i40e_vsi_get_bw_info(vsi);
4254         if (ret) {
4255                 dev_info(&vsi->back->pdev->dev,
4256                          "Failed updating vsi bw info, aq_err=%d\n",
4257                          vsi->back->hw.aq.asq_last_status);
4258                 goto out;
4259         }
4260
4261         /* Update the netdev TC setup */
4262         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4263 out:
4264         return ret;
4265 }
4266
4267 /**
4268  * i40e_veb_config_tc - Configure TCs for given VEB
4269  * @veb: given VEB
4270  * @enabled_tc: TC bitmap
4271  *
4272  * Configures given TC bitmap for VEB (switching) element
4273  **/
4274 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4275 {
4276         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4277         struct i40e_pf *pf = veb->pf;
4278         int ret = 0;
4279         int i;
4280
4281         /* No TCs or already enabled TCs just return */
4282         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4283                 return ret;
4284
4285         bw_data.tc_valid_bits = enabled_tc;
4286         /* bw_data.absolute_credits is not set (relative) */
4287
4288         /* Enable ETS TCs with equal BW Share for now */
4289         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4290                 if (enabled_tc & (1 << i))
4291                         bw_data.tc_bw_share_credits[i] = 1;
4292         }
4293
4294         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4295                                                    &bw_data, NULL);
4296         if (ret) {
4297                 dev_info(&pf->pdev->dev,
4298                          "veb bw config failed, aq_err=%d\n",
4299                          pf->hw.aq.asq_last_status);
4300                 goto out;
4301         }
4302
4303         /* Update the BW information */
4304         ret = i40e_veb_get_bw_info(veb);
4305         if (ret) {
4306                 dev_info(&pf->pdev->dev,
4307                          "Failed getting veb bw config, aq_err=%d\n",
4308                          pf->hw.aq.asq_last_status);
4309         }
4310
4311 out:
4312         return ret;
4313 }
4314
4315 #ifdef CONFIG_I40E_DCB
4316 /**
4317  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4318  * @pf: PF struct
4319  *
4320  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4321  * the caller would've quiesce all the VSIs before calling
4322  * this function
4323  **/
4324 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4325 {
4326         u8 tc_map = 0;
4327         int ret;
4328         u8 v;
4329
4330         /* Enable the TCs available on PF to all VEBs */
4331         tc_map = i40e_pf_get_tc_map(pf);
4332         for (v = 0; v < I40E_MAX_VEB; v++) {
4333                 if (!pf->veb[v])
4334                         continue;
4335                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4336                 if (ret) {
4337                         dev_info(&pf->pdev->dev,
4338                                  "Failed configuring TC for VEB seid=%d\n",
4339                                  pf->veb[v]->seid);
4340                         /* Will try to configure as many components */
4341                 }
4342         }
4343
4344         /* Update each VSI */
4345         for (v = 0; v < pf->num_alloc_vsi; v++) {
4346                 if (!pf->vsi[v])
4347                         continue;
4348
4349                 /* - Enable all TCs for the LAN VSI
4350 #ifdef I40E_FCOE
4351                  * - For FCoE VSI only enable the TC configured
4352                  *   as per the APP TLV
4353 #endif
4354                  * - For all others keep them at TC0 for now
4355                  */
4356                 if (v == pf->lan_vsi)
4357                         tc_map = i40e_pf_get_tc_map(pf);
4358                 else
4359                         tc_map = i40e_pf_get_default_tc(pf);
4360 #ifdef I40E_FCOE
4361                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
4362                         tc_map = i40e_get_fcoe_tc_map(pf);
4363 #endif /* #ifdef I40E_FCOE */
4364
4365                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4366                 if (ret) {
4367                         dev_info(&pf->pdev->dev,
4368                                  "Failed configuring TC for VSI seid=%d\n",
4369                                  pf->vsi[v]->seid);
4370                         /* Will try to configure as many components */
4371                 } else {
4372                         /* Re-configure VSI vectors based on updated TC map */
4373                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
4374                         if (pf->vsi[v]->netdev)
4375                                 i40e_dcbnl_set_all(pf->vsi[v]);
4376                 }
4377         }
4378 }
4379
4380 /**
4381  * i40e_init_pf_dcb - Initialize DCB configuration
4382  * @pf: PF being configured
4383  *
4384  * Query the current DCB configuration and cache it
4385  * in the hardware structure
4386  **/
4387 static int i40e_init_pf_dcb(struct i40e_pf *pf)
4388 {
4389         struct i40e_hw *hw = &pf->hw;
4390         int err = 0;
4391
4392         if (pf->hw.func_caps.npar_enable)
4393                 goto out;
4394
4395         /* Get the initial DCB configuration */
4396         err = i40e_init_dcb(hw);
4397         if (!err) {
4398                 /* Device/Function is not DCBX capable */
4399                 if ((!hw->func_caps.dcb) ||
4400                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
4401                         dev_info(&pf->pdev->dev,
4402                                  "DCBX offload is not supported or is disabled for this PF.\n");
4403
4404                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
4405                                 goto out;
4406
4407                 } else {
4408                         /* When status is not DISABLED then DCBX in FW */
4409                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
4410                                        DCB_CAP_DCBX_VER_IEEE;
4411
4412                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
4413                         /* Enable DCB tagging only when more than one TC */
4414                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
4415                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
4416                 }
4417         } else {
4418                 dev_info(&pf->pdev->dev, "AQ Querying DCB configuration failed: %d\n",
4419                          pf->hw.aq.asq_last_status);
4420         }
4421
4422 out:
4423         return err;
4424 }
4425 #endif /* CONFIG_I40E_DCB */
4426 #define SPEED_SIZE 14
4427 #define FC_SIZE 8
4428 /**
4429  * i40e_print_link_message - print link up or down
4430  * @vsi: the VSI for which link needs a message
4431  */
4432 static void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
4433 {
4434         char speed[SPEED_SIZE] = "Unknown";
4435         char fc[FC_SIZE] = "RX/TX";
4436
4437         if (!isup) {
4438                 netdev_info(vsi->netdev, "NIC Link is Down\n");
4439                 return;
4440         }
4441
4442         switch (vsi->back->hw.phy.link_info.link_speed) {
4443         case I40E_LINK_SPEED_40GB:
4444                 strlcpy(speed, "40 Gbps", SPEED_SIZE);
4445                 break;
4446         case I40E_LINK_SPEED_10GB:
4447                 strlcpy(speed, "10 Gbps", SPEED_SIZE);
4448                 break;
4449         case I40E_LINK_SPEED_1GB:
4450                 strlcpy(speed, "1000 Mbps", SPEED_SIZE);
4451                 break;
4452         default:
4453                 break;
4454         }
4455
4456         switch (vsi->back->hw.fc.current_mode) {
4457         case I40E_FC_FULL:
4458                 strlcpy(fc, "RX/TX", FC_SIZE);
4459                 break;
4460         case I40E_FC_TX_PAUSE:
4461                 strlcpy(fc, "TX", FC_SIZE);
4462                 break;
4463         case I40E_FC_RX_PAUSE:
4464                 strlcpy(fc, "RX", FC_SIZE);
4465                 break;
4466         default:
4467                 strlcpy(fc, "None", FC_SIZE);
4468                 break;
4469         }
4470
4471         netdev_info(vsi->netdev, "NIC Link is Up %s Full Duplex, Flow Control: %s\n",
4472                     speed, fc);
4473 }
4474
4475 /**
4476  * i40e_up_complete - Finish the last steps of bringing up a connection
4477  * @vsi: the VSI being configured
4478  **/
4479 static int i40e_up_complete(struct i40e_vsi *vsi)
4480 {
4481         struct i40e_pf *pf = vsi->back;
4482         u8 set_fc_aq_fail = 0;
4483         int err;
4484
4485         /* force flow control off */
4486         i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
4487
4488         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4489                 i40e_vsi_configure_msix(vsi);
4490         else
4491                 i40e_configure_msi_and_legacy(vsi);
4492
4493         /* start rings */
4494         err = i40e_vsi_control_rings(vsi, true);
4495         if (err)
4496                 return err;
4497
4498         clear_bit(__I40E_DOWN, &vsi->state);
4499         i40e_napi_enable_all(vsi);
4500         i40e_vsi_enable_irq(vsi);
4501
4502         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
4503             (vsi->netdev)) {
4504                 i40e_print_link_message(vsi, true);
4505                 netif_tx_start_all_queues(vsi->netdev);
4506                 netif_carrier_on(vsi->netdev);
4507         } else if (vsi->netdev) {
4508                 i40e_print_link_message(vsi, false);
4509                 /* need to check for qualified module here*/
4510                 if ((pf->hw.phy.link_info.link_info &
4511                         I40E_AQ_MEDIA_AVAILABLE) &&
4512                     (!(pf->hw.phy.link_info.an_info &
4513                         I40E_AQ_QUALIFIED_MODULE)))
4514                         netdev_err(vsi->netdev,
4515                                    "the driver failed to link because an unqualified module was detected.");
4516         }
4517
4518         /* replay FDIR SB filters */
4519         if (vsi->type == I40E_VSI_FDIR) {
4520                 /* reset fd counters */
4521                 pf->fd_add_err = pf->fd_atr_cnt = 0;
4522                 if (pf->fd_tcp_rule > 0) {
4523                         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
4524                         dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
4525                         pf->fd_tcp_rule = 0;
4526                 }
4527                 i40e_fdir_filter_restore(vsi);
4528         }
4529         i40e_service_event_schedule(pf);
4530
4531         return 0;
4532 }
4533
4534 /**
4535  * i40e_vsi_reinit_locked - Reset the VSI
4536  * @vsi: the VSI being configured
4537  *
4538  * Rebuild the ring structs after some configuration
4539  * has changed, e.g. MTU size.
4540  **/
4541 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
4542 {
4543         struct i40e_pf *pf = vsi->back;
4544
4545         WARN_ON(in_interrupt());
4546         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
4547                 usleep_range(1000, 2000);
4548         i40e_down(vsi);
4549
4550         /* Give a VF some time to respond to the reset.  The
4551          * two second wait is based upon the watchdog cycle in
4552          * the VF driver.
4553          */
4554         if (vsi->type == I40E_VSI_SRIOV)
4555                 msleep(2000);
4556         i40e_up(vsi);
4557         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
4558 }
4559
4560 /**
4561  * i40e_up - Bring the connection back up after being down
4562  * @vsi: the VSI being configured
4563  **/
4564 int i40e_up(struct i40e_vsi *vsi)
4565 {
4566         int err;
4567
4568         err = i40e_vsi_configure(vsi);
4569         if (!err)
4570                 err = i40e_up_complete(vsi);
4571
4572         return err;
4573 }
4574
4575 /**
4576  * i40e_down - Shutdown the connection processing
4577  * @vsi: the VSI being stopped
4578  **/
4579 void i40e_down(struct i40e_vsi *vsi)
4580 {
4581         int i;
4582
4583         /* It is assumed that the caller of this function
4584          * sets the vsi->state __I40E_DOWN bit.
4585          */
4586         if (vsi->netdev) {
4587                 netif_carrier_off(vsi->netdev);
4588                 netif_tx_disable(vsi->netdev);
4589         }
4590         i40e_vsi_disable_irq(vsi);
4591         i40e_vsi_control_rings(vsi, false);
4592         i40e_napi_disable_all(vsi);
4593
4594         for (i = 0; i < vsi->num_queue_pairs; i++) {
4595                 i40e_clean_tx_ring(vsi->tx_rings[i]);
4596                 i40e_clean_rx_ring(vsi->rx_rings[i]);
4597         }
4598 }
4599
4600 /**
4601  * i40e_setup_tc - configure multiple traffic classes
4602  * @netdev: net device to configure
4603  * @tc: number of traffic classes to enable
4604  **/
4605 #ifdef I40E_FCOE
4606 int i40e_setup_tc(struct net_device *netdev, u8 tc)
4607 #else
4608 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
4609 #endif
4610 {
4611         struct i40e_netdev_priv *np = netdev_priv(netdev);
4612         struct i40e_vsi *vsi = np->vsi;
4613         struct i40e_pf *pf = vsi->back;
4614         u8 enabled_tc = 0;
4615         int ret = -EINVAL;
4616         int i;
4617
4618         /* Check if DCB enabled to continue */
4619         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
4620                 netdev_info(netdev, "DCB is not enabled for adapter\n");
4621                 goto exit;
4622         }
4623
4624         /* Check if MFP enabled */
4625         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
4626                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
4627                 goto exit;
4628         }
4629
4630         /* Check whether tc count is within enabled limit */
4631         if (tc > i40e_pf_get_num_tc(pf)) {
4632                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
4633                 goto exit;
4634         }
4635
4636         /* Generate TC map for number of tc requested */
4637         for (i = 0; i < tc; i++)
4638                 enabled_tc |= (1 << i);
4639
4640         /* Requesting same TC configuration as already enabled */
4641         if (enabled_tc == vsi->tc_config.enabled_tc)
4642                 return 0;
4643
4644         /* Quiesce VSI queues */
4645         i40e_quiesce_vsi(vsi);
4646
4647         /* Configure VSI for enabled TCs */
4648         ret = i40e_vsi_config_tc(vsi, enabled_tc);
4649         if (ret) {
4650                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
4651                             vsi->seid);
4652                 goto exit;
4653         }
4654
4655         /* Unquiesce VSI */
4656         i40e_unquiesce_vsi(vsi);
4657
4658 exit:
4659         return ret;
4660 }
4661
4662 /**
4663  * i40e_open - Called when a network interface is made active
4664  * @netdev: network interface device structure
4665  *
4666  * The open entry point is called when a network interface is made
4667  * active by the system (IFF_UP).  At this point all resources needed
4668  * for transmit and receive operations are allocated, the interrupt
4669  * handler is registered with the OS, the netdev watchdog subtask is
4670  * enabled, and the stack is notified that the interface is ready.
4671  *
4672  * Returns 0 on success, negative value on failure
4673  **/
4674 #ifdef I40E_FCOE
4675 int i40e_open(struct net_device *netdev)
4676 #else
4677 static int i40e_open(struct net_device *netdev)
4678 #endif
4679 {
4680         struct i40e_netdev_priv *np = netdev_priv(netdev);
4681         struct i40e_vsi *vsi = np->vsi;
4682         struct i40e_pf *pf = vsi->back;
4683         int err;
4684
4685         /* disallow open during test or if eeprom is broken */
4686         if (test_bit(__I40E_TESTING, &pf->state) ||
4687             test_bit(__I40E_BAD_EEPROM, &pf->state))
4688                 return -EBUSY;
4689
4690         netif_carrier_off(netdev);
4691
4692         err = i40e_vsi_open(vsi);
4693         if (err)
4694                 return err;
4695
4696         /* configure global TSO hardware offload settings */
4697         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
4698                                                        TCP_FLAG_FIN) >> 16);
4699         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
4700                                                        TCP_FLAG_FIN |
4701                                                        TCP_FLAG_CWR) >> 16);
4702         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
4703
4704 #ifdef CONFIG_I40E_VXLAN
4705         vxlan_get_rx_port(netdev);
4706 #endif
4707
4708         return 0;
4709 }
4710
4711 /**
4712  * i40e_vsi_open -
4713  * @vsi: the VSI to open
4714  *
4715  * Finish initialization of the VSI.
4716  *
4717  * Returns 0 on success, negative value on failure
4718  **/
4719 int i40e_vsi_open(struct i40e_vsi *vsi)
4720 {
4721         struct i40e_pf *pf = vsi->back;
4722         char int_name[IFNAMSIZ];
4723         int err;
4724
4725         /* allocate descriptors */
4726         err = i40e_vsi_setup_tx_resources(vsi);
4727         if (err)
4728                 goto err_setup_tx;
4729         err = i40e_vsi_setup_rx_resources(vsi);
4730         if (err)
4731                 goto err_setup_rx;
4732
4733         err = i40e_vsi_configure(vsi);
4734         if (err)
4735                 goto err_setup_rx;
4736
4737         if (vsi->netdev) {
4738                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
4739                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
4740                 err = i40e_vsi_request_irq(vsi, int_name);
4741                 if (err)
4742                         goto err_setup_rx;
4743
4744                 /* Notify the stack of the actual queue counts. */
4745                 err = netif_set_real_num_tx_queues(vsi->netdev,
4746                                                    vsi->num_queue_pairs);
4747                 if (err)
4748                         goto err_set_queues;
4749
4750                 err = netif_set_real_num_rx_queues(vsi->netdev,
4751                                                    vsi->num_queue_pairs);
4752                 if (err)
4753                         goto err_set_queues;
4754
4755         } else if (vsi->type == I40E_VSI_FDIR) {
4756                 snprintf(int_name, sizeof(int_name) - 1, "%s-fdir",
4757                          dev_driver_string(&pf->pdev->dev));
4758                 err = i40e_vsi_request_irq(vsi, int_name);
4759         } else {
4760                 err = -EINVAL;
4761                 goto err_setup_rx;
4762         }
4763
4764         err = i40e_up_complete(vsi);
4765         if (err)
4766                 goto err_up_complete;
4767
4768         return 0;
4769
4770 err_up_complete:
4771         i40e_down(vsi);
4772 err_set_queues:
4773         i40e_vsi_free_irq(vsi);
4774 err_setup_rx:
4775         i40e_vsi_free_rx_resources(vsi);
4776 err_setup_tx:
4777         i40e_vsi_free_tx_resources(vsi);
4778         if (vsi == pf->vsi[pf->lan_vsi])
4779                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
4780
4781         return err;
4782 }
4783
4784 /**
4785  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
4786  * @pf: Pointer to pf
4787  *
4788  * This function destroys the hlist where all the Flow Director
4789  * filters were saved.
4790  **/
4791 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
4792 {
4793         struct i40e_fdir_filter *filter;
4794         struct hlist_node *node2;
4795
4796         hlist_for_each_entry_safe(filter, node2,
4797                                   &pf->fdir_filter_list, fdir_node) {
4798                 hlist_del(&filter->fdir_node);
4799                 kfree(filter);
4800         }
4801         pf->fdir_pf_active_filters = 0;
4802 }
4803
4804 /**
4805  * i40e_close - Disables a network interface
4806  * @netdev: network interface device structure
4807  *
4808  * The close entry point is called when an interface is de-activated
4809  * by the OS.  The hardware is still under the driver's control, but
4810  * this netdev interface is disabled.
4811  *
4812  * Returns 0, this is not allowed to fail
4813  **/
4814 #ifdef I40E_FCOE
4815 int i40e_close(struct net_device *netdev)
4816 #else
4817 static int i40e_close(struct net_device *netdev)
4818 #endif
4819 {
4820         struct i40e_netdev_priv *np = netdev_priv(netdev);
4821         struct i40e_vsi *vsi = np->vsi;
4822
4823         i40e_vsi_close(vsi);
4824
4825         return 0;
4826 }
4827
4828 /**
4829  * i40e_do_reset - Start a PF or Core Reset sequence
4830  * @pf: board private structure
4831  * @reset_flags: which reset is requested
4832  *
4833  * The essential difference in resets is that the PF Reset
4834  * doesn't clear the packet buffers, doesn't reset the PE
4835  * firmware, and doesn't bother the other PFs on the chip.
4836  **/
4837 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
4838 {
4839         u32 val;
4840
4841         WARN_ON(in_interrupt());
4842
4843         if (i40e_check_asq_alive(&pf->hw))
4844                 i40e_vc_notify_reset(pf);
4845
4846         /* do the biggest reset indicated */
4847         if (reset_flags & (1 << __I40E_GLOBAL_RESET_REQUESTED)) {
4848
4849                 /* Request a Global Reset
4850                  *
4851                  * This will start the chip's countdown to the actual full
4852                  * chip reset event, and a warning interrupt to be sent
4853                  * to all PFs, including the requestor.  Our handler
4854                  * for the warning interrupt will deal with the shutdown
4855                  * and recovery of the switch setup.
4856                  */
4857                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
4858                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4859                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
4860                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4861
4862         } else if (reset_flags & (1 << __I40E_CORE_RESET_REQUESTED)) {
4863
4864                 /* Request a Core Reset
4865                  *
4866                  * Same as Global Reset, except does *not* include the MAC/PHY
4867                  */
4868                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
4869                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4870                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
4871                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4872                 i40e_flush(&pf->hw);
4873
4874         } else if (reset_flags & (1 << __I40E_EMP_RESET_REQUESTED)) {
4875
4876                 /* Request a Firmware Reset
4877                  *
4878                  * Same as Global reset, plus restarting the
4879                  * embedded firmware engine.
4880                  */
4881                 /* enable EMP Reset */
4882                 val = rd32(&pf->hw, I40E_GLGEN_RSTENA_EMP);
4883                 val |= I40E_GLGEN_RSTENA_EMP_EMP_RST_ENA_MASK;
4884                 wr32(&pf->hw, I40E_GLGEN_RSTENA_EMP, val);
4885
4886                 /* force the reset */
4887                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
4888                 val |= I40E_GLGEN_RTRIG_EMPFWR_MASK;
4889                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
4890                 i40e_flush(&pf->hw);
4891
4892         } else if (reset_flags & (1 << __I40E_PF_RESET_REQUESTED)) {
4893
4894                 /* Request a PF Reset
4895                  *
4896                  * Resets only the PF-specific registers
4897                  *
4898                  * This goes directly to the tear-down and rebuild of
4899                  * the switch, since we need to do all the recovery as
4900                  * for the Core Reset.
4901                  */
4902                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
4903                 i40e_handle_reset_warning(pf);
4904
4905         } else if (reset_flags & (1 << __I40E_REINIT_REQUESTED)) {
4906                 int v;
4907
4908                 /* Find the VSI(s) that requested a re-init */
4909                 dev_info(&pf->pdev->dev,
4910                          "VSI reinit requested\n");
4911                 for (v = 0; v < pf->num_alloc_vsi; v++) {
4912                         struct i40e_vsi *vsi = pf->vsi[v];
4913                         if (vsi != NULL &&
4914                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
4915                                 i40e_vsi_reinit_locked(pf->vsi[v]);
4916                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
4917                         }
4918                 }
4919
4920                 /* no further action needed, so return now */
4921                 return;
4922         } else if (reset_flags & (1 << __I40E_DOWN_REQUESTED)) {
4923                 int v;
4924
4925                 /* Find the VSI(s) that needs to be brought down */
4926                 dev_info(&pf->pdev->dev, "VSI down requested\n");
4927                 for (v = 0; v < pf->num_alloc_vsi; v++) {
4928                         struct i40e_vsi *vsi = pf->vsi[v];
4929                         if (vsi != NULL &&
4930                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
4931                                 set_bit(__I40E_DOWN, &vsi->state);
4932                                 i40e_down(vsi);
4933                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
4934                         }
4935                 }
4936
4937                 /* no further action needed, so return now */
4938                 return;
4939         } else {
4940                 dev_info(&pf->pdev->dev,
4941                          "bad reset request 0x%08x\n", reset_flags);
4942                 return;
4943         }
4944 }
4945
4946 #ifdef CONFIG_I40E_DCB
4947 /**
4948  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
4949  * @pf: board private structure
4950  * @old_cfg: current DCB config
4951  * @new_cfg: new DCB config
4952  **/
4953 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
4954                             struct i40e_dcbx_config *old_cfg,
4955                             struct i40e_dcbx_config *new_cfg)
4956 {
4957         bool need_reconfig = false;
4958
4959         /* Check if ETS configuration has changed */
4960         if (memcmp(&new_cfg->etscfg,
4961                    &old_cfg->etscfg,
4962                    sizeof(new_cfg->etscfg))) {
4963                 /* If Priority Table has changed reconfig is needed */
4964                 if (memcmp(&new_cfg->etscfg.prioritytable,
4965                            &old_cfg->etscfg.prioritytable,
4966                            sizeof(new_cfg->etscfg.prioritytable))) {
4967                         need_reconfig = true;
4968                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
4969                 }
4970
4971                 if (memcmp(&new_cfg->etscfg.tcbwtable,
4972                            &old_cfg->etscfg.tcbwtable,
4973                            sizeof(new_cfg->etscfg.tcbwtable)))
4974                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
4975
4976                 if (memcmp(&new_cfg->etscfg.tsatable,
4977                            &old_cfg->etscfg.tsatable,
4978                            sizeof(new_cfg->etscfg.tsatable)))
4979                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
4980         }
4981
4982         /* Check if PFC configuration has changed */
4983         if (memcmp(&new_cfg->pfc,
4984                    &old_cfg->pfc,
4985                    sizeof(new_cfg->pfc))) {
4986                 need_reconfig = true;
4987                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
4988         }
4989
4990         /* Check if APP Table has changed */
4991         if (memcmp(&new_cfg->app,
4992                    &old_cfg->app,
4993                    sizeof(new_cfg->app))) {
4994                 need_reconfig = true;
4995                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
4996         }
4997
4998         return need_reconfig;
4999 }
5000
5001 /**
5002  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5003  * @pf: board private structure
5004  * @e: event info posted on ARQ
5005  **/
5006 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5007                                   struct i40e_arq_event_info *e)
5008 {
5009         struct i40e_aqc_lldp_get_mib *mib =
5010                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5011         struct i40e_hw *hw = &pf->hw;
5012         struct i40e_dcbx_config *dcbx_cfg = &hw->local_dcbx_config;
5013         struct i40e_dcbx_config tmp_dcbx_cfg;
5014         bool need_reconfig = false;
5015         int ret = 0;
5016         u8 type;
5017
5018         /* Not DCB capable or capability disabled */
5019         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5020                 return ret;
5021
5022         /* Ignore if event is not for Nearest Bridge */
5023         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5024                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5025         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5026                 return ret;
5027
5028         /* Check MIB Type and return if event for Remote MIB update */
5029         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5030         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5031                 /* Update the remote cached instance and return */
5032                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5033                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5034                                 &hw->remote_dcbx_config);
5035                 goto exit;
5036         }
5037
5038         /* Convert/store the DCBX data from LLDPDU temporarily */
5039         memset(&tmp_dcbx_cfg, 0, sizeof(tmp_dcbx_cfg));
5040         ret = i40e_lldp_to_dcb_config(e->msg_buf, &tmp_dcbx_cfg);
5041         if (ret) {
5042                 /* Error in LLDPDU parsing return */
5043                 dev_info(&pf->pdev->dev, "Failed parsing LLDPDU from event buffer\n");
5044                 goto exit;
5045         }
5046
5047         /* No change detected in DCBX configs */
5048         if (!memcmp(&tmp_dcbx_cfg, dcbx_cfg, sizeof(tmp_dcbx_cfg))) {
5049                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5050                 goto exit;
5051         }
5052
5053         need_reconfig = i40e_dcb_need_reconfig(pf, dcbx_cfg, &tmp_dcbx_cfg);
5054
5055         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg);
5056
5057         /* Overwrite the new configuration */
5058         *dcbx_cfg = tmp_dcbx_cfg;
5059
5060         if (!need_reconfig)
5061                 goto exit;
5062
5063         /* Enable DCB tagging only when more than one TC */
5064         if (i40e_dcb_get_num_tc(dcbx_cfg) > 1)
5065                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5066         else
5067                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5068
5069         /* Reconfiguration needed quiesce all VSIs */
5070         i40e_pf_quiesce_all_vsi(pf);
5071
5072         /* Changes in configuration update VEB/VSI */
5073         i40e_dcb_reconfigure(pf);
5074
5075         i40e_pf_unquiesce_all_vsi(pf);
5076 exit:
5077         return ret;
5078 }
5079 #endif /* CONFIG_I40E_DCB */
5080
5081 /**
5082  * i40e_do_reset_safe - Protected reset path for userland calls.
5083  * @pf: board private structure
5084  * @reset_flags: which reset is requested
5085  *
5086  **/
5087 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5088 {
5089         rtnl_lock();
5090         i40e_do_reset(pf, reset_flags);
5091         rtnl_unlock();
5092 }
5093
5094 /**
5095  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5096  * @pf: board private structure
5097  * @e: event info posted on ARQ
5098  *
5099  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5100  * and VF queues
5101  **/
5102 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5103                                            struct i40e_arq_event_info *e)
5104 {
5105         struct i40e_aqc_lan_overflow *data =
5106                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5107         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5108         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5109         struct i40e_hw *hw = &pf->hw;
5110         struct i40e_vf *vf;
5111         u16 vf_id;
5112
5113         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5114                 queue, qtx_ctl);
5115
5116         /* Queue belongs to VF, find the VF and issue VF reset */
5117         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5118             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5119                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5120                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5121                 vf_id -= hw->func_caps.vf_base_id;
5122                 vf = &pf->vf[vf_id];
5123                 i40e_vc_notify_vf_reset(vf);
5124                 /* Allow VF to process pending reset notification */
5125                 msleep(20);
5126                 i40e_reset_vf(vf, false);
5127         }
5128 }
5129
5130 /**
5131  * i40e_service_event_complete - Finish up the service event
5132  * @pf: board private structure
5133  **/
5134 static void i40e_service_event_complete(struct i40e_pf *pf)
5135 {
5136         BUG_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5137
5138         /* flush memory to make sure state is correct before next watchog */
5139         smp_mb__before_atomic();
5140         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5141 }
5142
5143 /**
5144  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5145  * @pf: board private structure
5146  **/
5147 int i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5148 {
5149         int val, fcnt_prog;
5150
5151         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5152         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5153         return fcnt_prog;
5154 }
5155
5156 /**
5157  * i40e_get_current_fd_count - Get the count of total FD filters programmed
5158  * @pf: board private structure
5159  **/
5160 int i40e_get_current_fd_count(struct i40e_pf *pf)
5161 {
5162         int val, fcnt_prog;
5163         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5164         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5165                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5166                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5167         return fcnt_prog;
5168 }
5169
5170 /**
5171  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5172  * @pf: board private structure
5173  **/
5174 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5175 {
5176         u32 fcnt_prog, fcnt_avail;
5177
5178         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5179                 return;
5180
5181         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5182          * to re-enable
5183          */
5184         fcnt_prog = i40e_get_cur_guaranteed_fd_count(pf);
5185         fcnt_avail = pf->fdir_pf_filter_count;
5186         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5187             (pf->fd_add_err == 0) ||
5188             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5189                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5190                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5191                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5192                         dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5193                 }
5194         }
5195         /* Wait for some more space to be available to turn on ATR */
5196         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5197                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5198                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5199                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5200                         dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
5201                 }
5202         }
5203 }
5204
5205 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5206 /**
5207  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5208  * @pf: board private structure
5209  **/
5210 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5211 {
5212         int flush_wait_retry = 50;
5213         int reg;
5214
5215         if (time_after(jiffies, pf->fd_flush_timestamp +
5216                                 (I40E_MIN_FD_FLUSH_INTERVAL * HZ))) {
5217                 set_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5218                 pf->fd_flush_timestamp = jiffies;
5219                 pf->auto_disable_flags |= I40E_FLAG_FD_SB_ENABLED;
5220                 pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5221                 /* flush all filters */
5222                 wr32(&pf->hw, I40E_PFQF_CTL_1,
5223                      I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
5224                 i40e_flush(&pf->hw);
5225                 pf->fd_flush_cnt++;
5226                 pf->fd_add_err = 0;
5227                 do {
5228                         /* Check FD flush status every 5-6msec */
5229                         usleep_range(5000, 6000);
5230                         reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
5231                         if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
5232                                 break;
5233                 } while (flush_wait_retry--);
5234                 if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
5235                         dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
5236                 } else {
5237                         /* replay sideband filters */
5238                         i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
5239
5240                         pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
5241                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5242                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5243                         clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5244                         dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
5245                 }
5246         }
5247 }
5248
5249 /**
5250  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
5251  * @pf: board private structure
5252  **/
5253 int i40e_get_current_atr_cnt(struct i40e_pf *pf)
5254 {
5255         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
5256 }
5257
5258 /* We can see up to 256 filter programming desc in transit if the filters are
5259  * being applied really fast; before we see the first
5260  * filter miss error on Rx queue 0. Accumulating enough error messages before
5261  * reacting will make sure we don't cause flush too often.
5262  */
5263 #define I40E_MAX_FD_PROGRAM_ERROR 256
5264
5265 /**
5266  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
5267  * @pf: board private structure
5268  **/
5269 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
5270 {
5271
5272         /* if interface is down do nothing */
5273         if (test_bit(__I40E_DOWN, &pf->state))
5274                 return;
5275
5276         if ((pf->fd_add_err >= I40E_MAX_FD_PROGRAM_ERROR) &&
5277             (i40e_get_current_atr_cnt(pf) >= pf->fd_atr_cnt) &&
5278             (i40e_get_current_atr_cnt(pf) > pf->fdir_pf_filter_count))
5279                 i40e_fdir_flush_and_replay(pf);
5280
5281         i40e_fdir_check_and_reenable(pf);
5282
5283 }
5284
5285 /**
5286  * i40e_vsi_link_event - notify VSI of a link event
5287  * @vsi: vsi to be notified
5288  * @link_up: link up or down
5289  **/
5290 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
5291 {
5292         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
5293                 return;
5294
5295         switch (vsi->type) {
5296         case I40E_VSI_MAIN:
5297 #ifdef I40E_FCOE
5298         case I40E_VSI_FCOE:
5299 #endif
5300                 if (!vsi->netdev || !vsi->netdev_registered)
5301                         break;
5302
5303                 if (link_up) {
5304                         netif_carrier_on(vsi->netdev);
5305                         netif_tx_wake_all_queues(vsi->netdev);
5306                 } else {
5307                         netif_carrier_off(vsi->netdev);
5308                         netif_tx_stop_all_queues(vsi->netdev);
5309                 }
5310                 break;
5311
5312         case I40E_VSI_SRIOV:
5313                 break;
5314
5315         case I40E_VSI_VMDQ2:
5316         case I40E_VSI_CTRL:
5317         case I40E_VSI_MIRROR:
5318         default:
5319                 /* there is no notification for other VSIs */
5320                 break;
5321         }
5322 }
5323
5324 /**
5325  * i40e_veb_link_event - notify elements on the veb of a link event
5326  * @veb: veb to be notified
5327  * @link_up: link up or down
5328  **/
5329 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
5330 {
5331         struct i40e_pf *pf;
5332         int i;
5333
5334         if (!veb || !veb->pf)
5335                 return;
5336         pf = veb->pf;
5337
5338         /* depth first... */
5339         for (i = 0; i < I40E_MAX_VEB; i++)
5340                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
5341                         i40e_veb_link_event(pf->veb[i], link_up);
5342
5343         /* ... now the local VSIs */
5344         for (i = 0; i < pf->num_alloc_vsi; i++)
5345                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
5346                         i40e_vsi_link_event(pf->vsi[i], link_up);
5347 }
5348
5349 /**
5350  * i40e_link_event - Update netif_carrier status
5351  * @pf: board private structure
5352  **/
5353 static void i40e_link_event(struct i40e_pf *pf)
5354 {
5355         bool new_link, old_link;
5356
5357         new_link = (pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP);
5358         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
5359
5360         if (new_link == old_link)
5361                 return;
5362         if (!test_bit(__I40E_DOWN, &pf->vsi[pf->lan_vsi]->state))
5363                 i40e_print_link_message(pf->vsi[pf->lan_vsi], new_link);
5364
5365         /* Notify the base of the switch tree connected to
5366          * the link.  Floating VEBs are not notified.
5367          */
5368         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
5369                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
5370         else
5371                 i40e_vsi_link_event(pf->vsi[pf->lan_vsi], new_link);
5372
5373         if (pf->vf)
5374                 i40e_vc_notify_link_state(pf);
5375
5376         if (pf->flags & I40E_FLAG_PTP)
5377                 i40e_ptp_set_increment(pf);
5378 }
5379
5380 /**
5381  * i40e_check_hang_subtask - Check for hung queues and dropped interrupts
5382  * @pf: board private structure
5383  *
5384  * Set the per-queue flags to request a check for stuck queues in the irq
5385  * clean functions, then force interrupts to be sure the irq clean is called.
5386  **/
5387 static void i40e_check_hang_subtask(struct i40e_pf *pf)
5388 {
5389         int i, v;
5390
5391         /* If we're down or resetting, just bail */
5392         if (test_bit(__I40E_CONFIG_BUSY, &pf->state))
5393                 return;
5394
5395         /* for each VSI/netdev
5396          *     for each Tx queue
5397          *         set the check flag
5398          *     for each q_vector
5399          *         force an interrupt
5400          */
5401         for (v = 0; v < pf->num_alloc_vsi; v++) {
5402                 struct i40e_vsi *vsi = pf->vsi[v];
5403                 int armed = 0;
5404
5405                 if (!pf->vsi[v] ||
5406                     test_bit(__I40E_DOWN, &vsi->state) ||
5407                     (vsi->netdev && !netif_carrier_ok(vsi->netdev)))
5408                         continue;
5409
5410                 for (i = 0; i < vsi->num_queue_pairs; i++) {
5411                         set_check_for_tx_hang(vsi->tx_rings[i]);
5412                         if (test_bit(__I40E_HANG_CHECK_ARMED,
5413                                      &vsi->tx_rings[i]->state))
5414                                 armed++;
5415                 }
5416
5417                 if (armed) {
5418                         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
5419                                 wr32(&vsi->back->hw, I40E_PFINT_DYN_CTL0,
5420                                      (I40E_PFINT_DYN_CTL0_INTENA_MASK |
5421                                       I40E_PFINT_DYN_CTL0_SWINT_TRIG_MASK));
5422                         } else {
5423                                 u16 vec = vsi->base_vector - 1;
5424                                 u32 val = (I40E_PFINT_DYN_CTLN_INTENA_MASK |
5425                                            I40E_PFINT_DYN_CTLN_SWINT_TRIG_MASK);
5426                                 for (i = 0; i < vsi->num_q_vectors; i++, vec++)
5427                                         wr32(&vsi->back->hw,
5428                                              I40E_PFINT_DYN_CTLN(vec), val);
5429                         }
5430                         i40e_flush(&vsi->back->hw);
5431                 }
5432         }
5433 }
5434
5435 /**
5436  * i40e_watchdog_subtask - Check and bring link up
5437  * @pf: board private structure
5438  **/
5439 static void i40e_watchdog_subtask(struct i40e_pf *pf)
5440 {
5441         int i;
5442
5443         /* if interface is down do nothing */
5444         if (test_bit(__I40E_DOWN, &pf->state) ||
5445             test_bit(__I40E_CONFIG_BUSY, &pf->state))
5446                 return;
5447
5448         /* Update the stats for active netdevs so the network stack
5449          * can look at updated numbers whenever it cares to
5450          */
5451         for (i = 0; i < pf->num_alloc_vsi; i++)
5452                 if (pf->vsi[i] && pf->vsi[i]->netdev)
5453                         i40e_update_stats(pf->vsi[i]);
5454
5455         /* Update the stats for the active switching components */
5456         for (i = 0; i < I40E_MAX_VEB; i++)
5457                 if (pf->veb[i])
5458                         i40e_update_veb_stats(pf->veb[i]);
5459
5460         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
5461 }
5462
5463 /**
5464  * i40e_reset_subtask - Set up for resetting the device and driver
5465  * @pf: board private structure
5466  **/
5467 static void i40e_reset_subtask(struct i40e_pf *pf)
5468 {
5469         u32 reset_flags = 0;
5470
5471         rtnl_lock();
5472         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
5473                 reset_flags |= (1 << __I40E_REINIT_REQUESTED);
5474                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
5475         }
5476         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
5477                 reset_flags |= (1 << __I40E_PF_RESET_REQUESTED);
5478                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5479         }
5480         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
5481                 reset_flags |= (1 << __I40E_CORE_RESET_REQUESTED);
5482                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
5483         }
5484         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
5485                 reset_flags |= (1 << __I40E_GLOBAL_RESET_REQUESTED);
5486                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
5487         }
5488         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
5489                 reset_flags |= (1 << __I40E_DOWN_REQUESTED);
5490                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
5491         }
5492
5493         /* If there's a recovery already waiting, it takes
5494          * precedence before starting a new reset sequence.
5495          */
5496         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
5497                 i40e_handle_reset_warning(pf);
5498                 goto unlock;
5499         }
5500
5501         /* If we're already down or resetting, just bail */
5502         if (reset_flags &&
5503             !test_bit(__I40E_DOWN, &pf->state) &&
5504             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
5505                 i40e_do_reset(pf, reset_flags);
5506
5507 unlock:
5508         rtnl_unlock();
5509 }
5510
5511 /**
5512  * i40e_handle_link_event - Handle link event
5513  * @pf: board private structure
5514  * @e: event info posted on ARQ
5515  **/
5516 static void i40e_handle_link_event(struct i40e_pf *pf,
5517                                    struct i40e_arq_event_info *e)
5518 {
5519         struct i40e_hw *hw = &pf->hw;
5520         struct i40e_aqc_get_link_status *status =
5521                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
5522         struct i40e_link_status *hw_link_info = &hw->phy.link_info;
5523
5524         /* save off old link status information */
5525         memcpy(&pf->hw.phy.link_info_old, hw_link_info,
5526                sizeof(pf->hw.phy.link_info_old));
5527
5528         /* check for unqualified module, if link is down */
5529         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
5530             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
5531             (!(status->link_info & I40E_AQ_LINK_UP)))
5532                 dev_err(&pf->pdev->dev,
5533                         "The driver failed to link because an unqualified module was detected.\n");
5534
5535         /* update link status */
5536         hw_link_info->phy_type = (enum i40e_aq_phy_type)status->phy_type;
5537         hw_link_info->link_speed = (enum i40e_aq_link_speed)status->link_speed;
5538         hw_link_info->link_info = status->link_info;
5539         hw_link_info->an_info = status->an_info;
5540         hw_link_info->ext_info = status->ext_info;
5541         hw_link_info->lse_enable =
5542                 le16_to_cpu(status->command_flags) &
5543                             I40E_AQ_LSE_ENABLE;
5544
5545         /* process the event */
5546         i40e_link_event(pf);
5547
5548         /* Do a new status request to re-enable LSE reporting
5549          * and load new status information into the hw struct,
5550          * then see if the status changed while processing the
5551          * initial event.
5552          */
5553         i40e_update_link_info(&pf->hw, true);
5554         i40e_link_event(pf);
5555 }
5556
5557 /**
5558  * i40e_clean_adminq_subtask - Clean the AdminQ rings
5559  * @pf: board private structure
5560  **/
5561 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
5562 {
5563         struct i40e_arq_event_info event;
5564         struct i40e_hw *hw = &pf->hw;
5565         u16 pending, i = 0;
5566         i40e_status ret;
5567         u16 opcode;
5568         u32 oldval;
5569         u32 val;
5570
5571         /* Do not run clean AQ when PF reset fails */
5572         if (test_bit(__I40E_RESET_FAILED, &pf->state))
5573                 return;
5574
5575         /* check for error indications */
5576         val = rd32(&pf->hw, pf->hw.aq.arq.len);
5577         oldval = val;
5578         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
5579                 dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
5580                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
5581         }
5582         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
5583                 dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
5584                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
5585         }
5586         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
5587                 dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
5588                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
5589         }
5590         if (oldval != val)
5591                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
5592
5593         val = rd32(&pf->hw, pf->hw.aq.asq.len);
5594         oldval = val;
5595         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
5596                 dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
5597                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
5598         }
5599         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
5600                 dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
5601                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
5602         }
5603         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
5604                 dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
5605                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
5606         }
5607         if (oldval != val)
5608                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
5609
5610         event.msg_size = I40E_MAX_AQ_BUF_SIZE;
5611         event.msg_buf = kzalloc(event.msg_size, GFP_KERNEL);
5612         if (!event.msg_buf)
5613                 return;
5614
5615         do {
5616                 event.msg_size = I40E_MAX_AQ_BUF_SIZE; /* reinit each time */
5617                 ret = i40e_clean_arq_element(hw, &event, &pending);
5618                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
5619                         break;
5620                 else if (ret) {
5621                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
5622                         break;
5623                 }
5624
5625                 opcode = le16_to_cpu(event.desc.opcode);
5626                 switch (opcode) {
5627
5628                 case i40e_aqc_opc_get_link_status:
5629                         i40e_handle_link_event(pf, &event);
5630                         break;
5631                 case i40e_aqc_opc_send_msg_to_pf:
5632                         ret = i40e_vc_process_vf_msg(pf,
5633                                         le16_to_cpu(event.desc.retval),
5634                                         le32_to_cpu(event.desc.cookie_high),
5635                                         le32_to_cpu(event.desc.cookie_low),
5636                                         event.msg_buf,
5637                                         event.msg_size);
5638                         break;
5639                 case i40e_aqc_opc_lldp_update_mib:
5640                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
5641 #ifdef CONFIG_I40E_DCB
5642                         rtnl_lock();
5643                         ret = i40e_handle_lldp_event(pf, &event);
5644                         rtnl_unlock();
5645 #endif /* CONFIG_I40E_DCB */
5646                         break;
5647                 case i40e_aqc_opc_event_lan_overflow:
5648                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
5649                         i40e_handle_lan_overflow_event(pf, &event);
5650                         break;
5651                 case i40e_aqc_opc_send_msg_to_peer:
5652                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
5653                         break;
5654                 default:
5655                         dev_info(&pf->pdev->dev,
5656                                  "ARQ Error: Unknown event 0x%04x received\n",
5657                                  opcode);
5658                         break;
5659                 }
5660         } while (pending && (i++ < pf->adminq_work_limit));
5661
5662         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
5663         /* re-enable Admin queue interrupt cause */
5664         val = rd32(hw, I40E_PFINT_ICR0_ENA);
5665         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
5666         wr32(hw, I40E_PFINT_ICR0_ENA, val);
5667         i40e_flush(hw);
5668
5669         kfree(event.msg_buf);
5670 }
5671
5672 /**
5673  * i40e_verify_eeprom - make sure eeprom is good to use
5674  * @pf: board private structure
5675  **/
5676 static void i40e_verify_eeprom(struct i40e_pf *pf)
5677 {
5678         int err;
5679
5680         err = i40e_diag_eeprom_test(&pf->hw);
5681         if (err) {
5682                 /* retry in case of garbage read */
5683                 err = i40e_diag_eeprom_test(&pf->hw);
5684                 if (err) {
5685                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
5686                                  err);
5687                         set_bit(__I40E_BAD_EEPROM, &pf->state);
5688                 }
5689         }
5690
5691         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
5692                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
5693                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
5694         }
5695 }
5696
5697 /**
5698  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
5699  * @veb: pointer to the VEB instance
5700  *
5701  * This is a recursive function that first builds the attached VSIs then
5702  * recurses in to build the next layer of VEB.  We track the connections
5703  * through our own index numbers because the seid's from the HW could
5704  * change across the reset.
5705  **/
5706 static int i40e_reconstitute_veb(struct i40e_veb *veb)
5707 {
5708         struct i40e_vsi *ctl_vsi = NULL;
5709         struct i40e_pf *pf = veb->pf;
5710         int v, veb_idx;
5711         int ret;
5712
5713         /* build VSI that owns this VEB, temporarily attached to base VEB */
5714         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
5715                 if (pf->vsi[v] &&
5716                     pf->vsi[v]->veb_idx == veb->idx &&
5717                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
5718                         ctl_vsi = pf->vsi[v];
5719                         break;
5720                 }
5721         }
5722         if (!ctl_vsi) {
5723                 dev_info(&pf->pdev->dev,
5724                          "missing owner VSI for veb_idx %d\n", veb->idx);
5725                 ret = -ENOENT;
5726                 goto end_reconstitute;
5727         }
5728         if (ctl_vsi != pf->vsi[pf->lan_vsi])
5729                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
5730         ret = i40e_add_vsi(ctl_vsi);
5731         if (ret) {
5732                 dev_info(&pf->pdev->dev,
5733                          "rebuild of owner VSI failed: %d\n", ret);
5734                 goto end_reconstitute;
5735         }
5736         i40e_vsi_reset_stats(ctl_vsi);
5737
5738         /* create the VEB in the switch and move the VSI onto the VEB */
5739         ret = i40e_add_veb(veb, ctl_vsi);
5740         if (ret)
5741                 goto end_reconstitute;
5742
5743         /* create the remaining VSIs attached to this VEB */
5744         for (v = 0; v < pf->num_alloc_vsi; v++) {
5745                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
5746                         continue;
5747
5748                 if (pf->vsi[v]->veb_idx == veb->idx) {
5749                         struct i40e_vsi *vsi = pf->vsi[v];
5750                         vsi->uplink_seid = veb->seid;
5751                         ret = i40e_add_vsi(vsi);
5752                         if (ret) {
5753                                 dev_info(&pf->pdev->dev,
5754                                          "rebuild of vsi_idx %d failed: %d\n",
5755                                          v, ret);
5756                                 goto end_reconstitute;
5757                         }
5758                         i40e_vsi_reset_stats(vsi);
5759                 }
5760         }
5761
5762         /* create any VEBs attached to this VEB - RECURSION */
5763         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
5764                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
5765                         pf->veb[veb_idx]->uplink_seid = veb->seid;
5766                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
5767                         if (ret)
5768                                 break;
5769                 }
5770         }
5771
5772 end_reconstitute:
5773         return ret;
5774 }
5775
5776 /**
5777  * i40e_get_capabilities - get info about the HW
5778  * @pf: the PF struct
5779  **/
5780 static int i40e_get_capabilities(struct i40e_pf *pf)
5781 {
5782         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
5783         u16 data_size;
5784         int buf_len;
5785         int err;
5786
5787         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
5788         do {
5789                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
5790                 if (!cap_buf)
5791                         return -ENOMEM;
5792
5793                 /* this loads the data into the hw struct for us */
5794                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
5795                                             &data_size,
5796                                             i40e_aqc_opc_list_func_capabilities,
5797                                             NULL);
5798                 /* data loaded, buffer no longer needed */
5799                 kfree(cap_buf);
5800
5801                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
5802                         /* retry with a larger buffer */
5803                         buf_len = data_size;
5804                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
5805                         dev_info(&pf->pdev->dev,
5806                                  "capability discovery failed: aq=%d\n",
5807                                  pf->hw.aq.asq_last_status);
5808                         return -ENODEV;
5809                 }
5810         } while (err);
5811
5812         if (((pf->hw.aq.fw_maj_ver == 2) && (pf->hw.aq.fw_min_ver < 22)) ||
5813             (pf->hw.aq.fw_maj_ver < 2)) {
5814                 pf->hw.func_caps.num_msix_vectors++;
5815                 pf->hw.func_caps.num_msix_vectors_vf++;
5816         }
5817
5818         if (pf->hw.debug_mask & I40E_DEBUG_USER)
5819                 dev_info(&pf->pdev->dev,
5820                          "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",
5821                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
5822                          pf->hw.func_caps.num_msix_vectors,
5823                          pf->hw.func_caps.num_msix_vectors_vf,
5824                          pf->hw.func_caps.fd_filters_guaranteed,
5825                          pf->hw.func_caps.fd_filters_best_effort,
5826                          pf->hw.func_caps.num_tx_qp,
5827                          pf->hw.func_caps.num_vsis);
5828
5829 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
5830                        + pf->hw.func_caps.num_vfs)
5831         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
5832                 dev_info(&pf->pdev->dev,
5833                          "got num_vsis %d, setting num_vsis to %d\n",
5834                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
5835                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
5836         }
5837
5838         return 0;
5839 }
5840
5841 static int i40e_vsi_clear(struct i40e_vsi *vsi);
5842
5843 /**
5844  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
5845  * @pf: board private structure
5846  **/
5847 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
5848 {
5849         struct i40e_vsi *vsi;
5850         int i;
5851
5852         /* quick workaround for an NVM issue that leaves a critical register
5853          * uninitialized
5854          */
5855         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
5856                 static const u32 hkey[] = {
5857                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
5858                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
5859                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
5860                         0x95b3a76d};
5861
5862                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
5863                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
5864         }
5865
5866         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
5867                 return;
5868
5869         /* find existing VSI and see if it needs configuring */
5870         vsi = NULL;
5871         for (i = 0; i < pf->num_alloc_vsi; i++) {
5872                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
5873                         vsi = pf->vsi[i];
5874                         break;
5875                 }
5876         }
5877
5878         /* create a new VSI if none exists */
5879         if (!vsi) {
5880                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
5881                                      pf->vsi[pf->lan_vsi]->seid, 0);
5882                 if (!vsi) {
5883                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
5884                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
5885                         return;
5886                 }
5887         }
5888
5889         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
5890 }
5891
5892 /**
5893  * i40e_fdir_teardown - release the Flow Director resources
5894  * @pf: board private structure
5895  **/
5896 static void i40e_fdir_teardown(struct i40e_pf *pf)
5897 {
5898         int i;
5899
5900         i40e_fdir_filter_exit(pf);
5901         for (i = 0; i < pf->num_alloc_vsi; i++) {
5902                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
5903                         i40e_vsi_release(pf->vsi[i]);
5904                         break;
5905                 }
5906         }
5907 }
5908
5909 /**
5910  * i40e_prep_for_reset - prep for the core to reset
5911  * @pf: board private structure
5912  *
5913  * Close up the VFs and other things in prep for pf Reset.
5914   **/
5915 static void i40e_prep_for_reset(struct i40e_pf *pf)
5916 {
5917         struct i40e_hw *hw = &pf->hw;
5918         i40e_status ret = 0;
5919         u32 v;
5920
5921         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
5922         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
5923                 return;
5924
5925         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
5926
5927         /* quiesce the VSIs and their queues that are not already DOWN */
5928         i40e_pf_quiesce_all_vsi(pf);
5929
5930         for (v = 0; v < pf->num_alloc_vsi; v++) {
5931                 if (pf->vsi[v])
5932                         pf->vsi[v]->seid = 0;
5933         }
5934
5935         i40e_shutdown_adminq(&pf->hw);
5936
5937         /* call shutdown HMC */
5938         if (hw->hmc.hmc_obj) {
5939                 ret = i40e_shutdown_lan_hmc(hw);
5940                 if (ret)
5941                         dev_warn(&pf->pdev->dev,
5942                                  "shutdown_lan_hmc failed: %d\n", ret);
5943         }
5944 }
5945
5946 /**
5947  * i40e_send_version - update firmware with driver version
5948  * @pf: PF struct
5949  */
5950 static void i40e_send_version(struct i40e_pf *pf)
5951 {
5952         struct i40e_driver_version dv;
5953
5954         dv.major_version = DRV_VERSION_MAJOR;
5955         dv.minor_version = DRV_VERSION_MINOR;
5956         dv.build_version = DRV_VERSION_BUILD;
5957         dv.subbuild_version = 0;
5958         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
5959         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
5960 }
5961
5962 /**
5963  * i40e_reset_and_rebuild - reset and rebuild using a saved config
5964  * @pf: board private structure
5965  * @reinit: if the Main VSI needs to re-initialized.
5966  **/
5967 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
5968 {
5969         struct i40e_hw *hw = &pf->hw;
5970         i40e_status ret;
5971         u32 v;
5972
5973         /* Now we wait for GRST to settle out.
5974          * We don't have to delete the VEBs or VSIs from the hw switch
5975          * because the reset will make them disappear.
5976          */
5977         ret = i40e_pf_reset(hw);
5978         if (ret) {
5979                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
5980                 set_bit(__I40E_RESET_FAILED, &pf->state);
5981                 goto clear_recovery;
5982         }
5983         pf->pfr_count++;
5984
5985         if (test_bit(__I40E_DOWN, &pf->state))
5986                 goto clear_recovery;
5987         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
5988
5989         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
5990         ret = i40e_init_adminq(&pf->hw);
5991         if (ret) {
5992                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, %d\n", ret);
5993                 goto clear_recovery;
5994         }
5995
5996         /* re-verify the eeprom if we just had an EMP reset */
5997         if (test_bit(__I40E_EMP_RESET_REQUESTED, &pf->state)) {
5998                 clear_bit(__I40E_EMP_RESET_REQUESTED, &pf->state);
5999                 i40e_verify_eeprom(pf);
6000         }
6001
6002         i40e_clear_pxe_mode(hw);
6003         ret = i40e_get_capabilities(pf);
6004         if (ret) {
6005                 dev_info(&pf->pdev->dev, "i40e_get_capabilities failed, %d\n",
6006                          ret);
6007                 goto end_core_reset;
6008         }
6009
6010         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6011                                 hw->func_caps.num_rx_qp,
6012                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6013         if (ret) {
6014                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6015                 goto end_core_reset;
6016         }
6017         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6018         if (ret) {
6019                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6020                 goto end_core_reset;
6021         }
6022
6023 #ifdef CONFIG_I40E_DCB
6024         ret = i40e_init_pf_dcb(pf);
6025         if (ret) {
6026                 dev_info(&pf->pdev->dev, "init_pf_dcb failed: %d\n", ret);
6027                 goto end_core_reset;
6028         }
6029 #endif /* CONFIG_I40E_DCB */
6030 #ifdef I40E_FCOE
6031         ret = i40e_init_pf_fcoe(pf);
6032         if (ret)
6033                 dev_info(&pf->pdev->dev, "init_pf_fcoe failed: %d\n", ret);
6034
6035 #endif
6036         /* do basic switch setup */
6037         ret = i40e_setup_pf_switch(pf, reinit);
6038         if (ret)
6039                 goto end_core_reset;
6040
6041         /* Rebuild the VSIs and VEBs that existed before reset.
6042          * They are still in our local switch element arrays, so only
6043          * need to rebuild the switch model in the HW.
6044          *
6045          * If there were VEBs but the reconstitution failed, we'll try
6046          * try to recover minimal use by getting the basic PF VSI working.
6047          */
6048         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6049                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6050                 /* find the one VEB connected to the MAC, and find orphans */
6051                 for (v = 0; v < I40E_MAX_VEB; v++) {
6052                         if (!pf->veb[v])
6053                                 continue;
6054
6055                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6056                             pf->veb[v]->uplink_seid == 0) {
6057                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6058
6059                                 if (!ret)
6060                                         continue;
6061
6062                                 /* If Main VEB failed, we're in deep doodoo,
6063                                  * so give up rebuilding the switch and set up
6064                                  * for minimal rebuild of PF VSI.
6065                                  * If orphan failed, we'll report the error
6066                                  * but try to keep going.
6067                                  */
6068                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6069                                         dev_info(&pf->pdev->dev,
6070                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6071                                                  ret);
6072                                         pf->vsi[pf->lan_vsi]->uplink_seid
6073                                                                 = pf->mac_seid;
6074                                         break;
6075                                 } else if (pf->veb[v]->uplink_seid == 0) {
6076                                         dev_info(&pf->pdev->dev,
6077                                                  "rebuild of orphan VEB failed: %d\n",
6078                                                  ret);
6079                                 }
6080                         }
6081                 }
6082         }
6083
6084         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6085                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6086                 /* no VEB, so rebuild only the Main VSI */
6087                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6088                 if (ret) {
6089                         dev_info(&pf->pdev->dev,
6090                                  "rebuild of Main VSI failed: %d\n", ret);
6091                         goto end_core_reset;
6092                 }
6093         }
6094
6095         /* reinit the misc interrupt */
6096         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6097                 ret = i40e_setup_misc_vector(pf);
6098
6099         /* restart the VSIs that were rebuilt and running before the reset */
6100         i40e_pf_unquiesce_all_vsi(pf);
6101
6102         if (pf->num_alloc_vfs) {
6103                 for (v = 0; v < pf->num_alloc_vfs; v++)
6104                         i40e_reset_vf(&pf->vf[v], true);
6105         }
6106
6107         /* tell the firmware that we're starting */
6108         i40e_send_version(pf);
6109
6110 end_core_reset:
6111         clear_bit(__I40E_RESET_FAILED, &pf->state);
6112 clear_recovery:
6113         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
6114 }
6115
6116 /**
6117  * i40e_handle_reset_warning - prep for the pf to reset, reset and rebuild
6118  * @pf: board private structure
6119  *
6120  * Close up the VFs and other things in prep for a Core Reset,
6121  * then get ready to rebuild the world.
6122  **/
6123 static void i40e_handle_reset_warning(struct i40e_pf *pf)
6124 {
6125         i40e_prep_for_reset(pf);
6126         i40e_reset_and_rebuild(pf, false);
6127 }
6128
6129 /**
6130  * i40e_handle_mdd_event
6131  * @pf: pointer to the pf structure
6132  *
6133  * Called from the MDD irq handler to identify possibly malicious vfs
6134  **/
6135 static void i40e_handle_mdd_event(struct i40e_pf *pf)
6136 {
6137         struct i40e_hw *hw = &pf->hw;
6138         bool mdd_detected = false;
6139         bool pf_mdd_detected = false;
6140         struct i40e_vf *vf;
6141         u32 reg;
6142         int i;
6143
6144         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
6145                 return;
6146
6147         /* find what triggered the MDD event */
6148         reg = rd32(hw, I40E_GL_MDET_TX);
6149         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
6150                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
6151                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
6152                 u8 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
6153                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
6154                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
6155                                 I40E_GL_MDET_TX_EVENT_SHIFT;
6156                 u8 queue = (reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
6157                                 I40E_GL_MDET_TX_QUEUE_SHIFT;
6158                 if (netif_msg_tx_err(pf))
6159                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d pf number 0x%02x vf number 0x%02x\n",
6160                                  event, queue, pf_num, vf_num);
6161                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
6162                 mdd_detected = true;
6163         }
6164         reg = rd32(hw, I40E_GL_MDET_RX);
6165         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
6166                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
6167                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
6168                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
6169                                 I40E_GL_MDET_RX_EVENT_SHIFT;
6170                 u8 queue = (reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
6171                                 I40E_GL_MDET_RX_QUEUE_SHIFT;
6172                 if (netif_msg_rx_err(pf))
6173                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
6174                                  event, queue, func);
6175                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
6176                 mdd_detected = true;
6177         }
6178
6179         if (mdd_detected) {
6180                 reg = rd32(hw, I40E_PF_MDET_TX);
6181                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
6182                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
6183                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
6184                         pf_mdd_detected = true;
6185                 }
6186                 reg = rd32(hw, I40E_PF_MDET_RX);
6187                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
6188                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
6189                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
6190                         pf_mdd_detected = true;
6191                 }
6192                 /* Queue belongs to the PF, initiate a reset */
6193                 if (pf_mdd_detected) {
6194                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6195                         i40e_service_event_schedule(pf);
6196                 }
6197         }
6198
6199         /* see if one of the VFs needs its hand slapped */
6200         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
6201                 vf = &(pf->vf[i]);
6202                 reg = rd32(hw, I40E_VP_MDET_TX(i));
6203                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
6204                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
6205                         vf->num_mdd_events++;
6206                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
6207                                  i);
6208                 }
6209
6210                 reg = rd32(hw, I40E_VP_MDET_RX(i));
6211                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
6212                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
6213                         vf->num_mdd_events++;
6214                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
6215                                  i);
6216                 }
6217
6218                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
6219                         dev_info(&pf->pdev->dev,
6220                                  "Too many MDD events on VF %d, disabled\n", i);
6221                         dev_info(&pf->pdev->dev,
6222                                  "Use PF Control I/F to re-enable the VF\n");
6223                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
6224                 }
6225         }
6226
6227         /* re-enable mdd interrupt cause */
6228         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
6229         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
6230         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
6231         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
6232         i40e_flush(hw);
6233 }
6234
6235 #ifdef CONFIG_I40E_VXLAN
6236 /**
6237  * i40e_sync_vxlan_filters_subtask - Sync the VSI filter list with HW
6238  * @pf: board private structure
6239  **/
6240 static void i40e_sync_vxlan_filters_subtask(struct i40e_pf *pf)
6241 {
6242         struct i40e_hw *hw = &pf->hw;
6243         i40e_status ret;
6244         u8 filter_index;
6245         __be16 port;
6246         int i;
6247
6248         if (!(pf->flags & I40E_FLAG_VXLAN_FILTER_SYNC))
6249                 return;
6250
6251         pf->flags &= ~I40E_FLAG_VXLAN_FILTER_SYNC;
6252
6253         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
6254                 if (pf->pending_vxlan_bitmap & (1 << i)) {
6255                         pf->pending_vxlan_bitmap &= ~(1 << i);
6256                         port = pf->vxlan_ports[i];
6257                         ret = port ?
6258                               i40e_aq_add_udp_tunnel(hw, ntohs(port),
6259                                                      I40E_AQC_TUNNEL_TYPE_VXLAN,
6260                                                      &filter_index, NULL)
6261                               : i40e_aq_del_udp_tunnel(hw, i, NULL);
6262
6263                         if (ret) {
6264                                 dev_info(&pf->pdev->dev, "Failed to execute AQ command for %s port %d with index %d\n",
6265                                          port ? "adding" : "deleting",
6266                                          ntohs(port), port ? i : i);
6267
6268                                 pf->vxlan_ports[i] = 0;
6269                         } else {
6270                                 dev_info(&pf->pdev->dev, "%s port %d with AQ command with index %d\n",
6271                                          port ? "Added" : "Deleted",
6272                                          ntohs(port), port ? i : filter_index);
6273                         }
6274                 }
6275         }
6276 }
6277
6278 #endif
6279 /**
6280  * i40e_service_task - Run the driver's async subtasks
6281  * @work: pointer to work_struct containing our data
6282  **/
6283 static void i40e_service_task(struct work_struct *work)
6284 {
6285         struct i40e_pf *pf = container_of(work,
6286                                           struct i40e_pf,
6287                                           service_task);
6288         unsigned long start_time = jiffies;
6289
6290         /* don't bother with service tasks if a reset is in progress */
6291         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
6292                 i40e_service_event_complete(pf);
6293                 return;
6294         }
6295
6296         i40e_reset_subtask(pf);
6297         i40e_handle_mdd_event(pf);
6298         i40e_vc_process_vflr_event(pf);
6299         i40e_watchdog_subtask(pf);
6300         i40e_fdir_reinit_subtask(pf);
6301         i40e_check_hang_subtask(pf);
6302         i40e_sync_filters_subtask(pf);
6303 #ifdef CONFIG_I40E_VXLAN
6304         i40e_sync_vxlan_filters_subtask(pf);
6305 #endif
6306         i40e_clean_adminq_subtask(pf);
6307
6308         i40e_service_event_complete(pf);
6309
6310         /* If the tasks have taken longer than one timer cycle or there
6311          * is more work to be done, reschedule the service task now
6312          * rather than wait for the timer to tick again.
6313          */
6314         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
6315             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
6316             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
6317             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
6318                 i40e_service_event_schedule(pf);
6319 }
6320
6321 /**
6322  * i40e_service_timer - timer callback
6323  * @data: pointer to PF struct
6324  **/
6325 static void i40e_service_timer(unsigned long data)
6326 {
6327         struct i40e_pf *pf = (struct i40e_pf *)data;
6328
6329         mod_timer(&pf->service_timer,
6330                   round_jiffies(jiffies + pf->service_timer_period));
6331         i40e_service_event_schedule(pf);
6332 }
6333
6334 /**
6335  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
6336  * @vsi: the VSI being configured
6337  **/
6338 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
6339 {
6340         struct i40e_pf *pf = vsi->back;
6341
6342         switch (vsi->type) {
6343         case I40E_VSI_MAIN:
6344                 vsi->alloc_queue_pairs = pf->num_lan_qps;
6345                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6346                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6347                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6348                         vsi->num_q_vectors = pf->num_lan_msix;
6349                 else
6350                         vsi->num_q_vectors = 1;
6351
6352                 break;
6353
6354         case I40E_VSI_FDIR:
6355                 vsi->alloc_queue_pairs = 1;
6356                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
6357                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6358                 vsi->num_q_vectors = 1;
6359                 break;
6360
6361         case I40E_VSI_VMDQ2:
6362                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
6363                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6364                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6365                 vsi->num_q_vectors = pf->num_vmdq_msix;
6366                 break;
6367
6368         case I40E_VSI_SRIOV:
6369                 vsi->alloc_queue_pairs = pf->num_vf_qps;
6370                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6371                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6372                 break;
6373
6374 #ifdef I40E_FCOE
6375         case I40E_VSI_FCOE:
6376                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
6377                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
6378                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
6379                 vsi->num_q_vectors = pf->num_fcoe_msix;
6380                 break;
6381
6382 #endif /* I40E_FCOE */
6383         default:
6384                 WARN_ON(1);
6385                 return -ENODATA;
6386         }
6387
6388         return 0;
6389 }
6390
6391 /**
6392  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
6393  * @type: VSI pointer
6394  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
6395  *
6396  * On error: returns error code (negative)
6397  * On success: returns 0
6398  **/
6399 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
6400 {
6401         int size;
6402         int ret = 0;
6403
6404         /* allocate memory for both Tx and Rx ring pointers */
6405         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
6406         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
6407         if (!vsi->tx_rings)
6408                 return -ENOMEM;
6409         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
6410
6411         if (alloc_qvectors) {
6412                 /* allocate memory for q_vector pointers */
6413                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
6414                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
6415                 if (!vsi->q_vectors) {
6416                         ret = -ENOMEM;
6417                         goto err_vectors;
6418                 }
6419         }
6420         return ret;
6421
6422 err_vectors:
6423         kfree(vsi->tx_rings);
6424         return ret;
6425 }
6426
6427 /**
6428  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
6429  * @pf: board private structure
6430  * @type: type of VSI
6431  *
6432  * On error: returns error code (negative)
6433  * On success: returns vsi index in PF (positive)
6434  **/
6435 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
6436 {
6437         int ret = -ENODEV;
6438         struct i40e_vsi *vsi;
6439         int vsi_idx;
6440         int i;
6441
6442         /* Need to protect the allocation of the VSIs at the PF level */
6443         mutex_lock(&pf->switch_mutex);
6444
6445         /* VSI list may be fragmented if VSI creation/destruction has
6446          * been happening.  We can afford to do a quick scan to look
6447          * for any free VSIs in the list.
6448          *
6449          * find next empty vsi slot, looping back around if necessary
6450          */
6451         i = pf->next_vsi;
6452         while (i < pf->num_alloc_vsi && pf->vsi[i])
6453                 i++;
6454         if (i >= pf->num_alloc_vsi) {
6455                 i = 0;
6456                 while (i < pf->next_vsi && pf->vsi[i])
6457                         i++;
6458         }
6459
6460         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
6461                 vsi_idx = i;             /* Found one! */
6462         } else {
6463                 ret = -ENODEV;
6464                 goto unlock_pf;  /* out of VSI slots! */
6465         }
6466         pf->next_vsi = ++i;
6467
6468         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
6469         if (!vsi) {
6470                 ret = -ENOMEM;
6471                 goto unlock_pf;
6472         }
6473         vsi->type = type;
6474         vsi->back = pf;
6475         set_bit(__I40E_DOWN, &vsi->state);
6476         vsi->flags = 0;
6477         vsi->idx = vsi_idx;
6478         vsi->rx_itr_setting = pf->rx_itr_default;
6479         vsi->tx_itr_setting = pf->tx_itr_default;
6480         vsi->netdev_registered = false;
6481         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
6482         INIT_LIST_HEAD(&vsi->mac_filter_list);
6483         vsi->irqs_ready = false;
6484
6485         ret = i40e_set_num_rings_in_vsi(vsi);
6486         if (ret)
6487                 goto err_rings;
6488
6489         ret = i40e_vsi_alloc_arrays(vsi, true);
6490         if (ret)
6491                 goto err_rings;
6492
6493         /* Setup default MSIX irq handler for VSI */
6494         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
6495
6496         pf->vsi[vsi_idx] = vsi;
6497         ret = vsi_idx;
6498         goto unlock_pf;
6499
6500 err_rings:
6501         pf->next_vsi = i - 1;
6502         kfree(vsi);
6503 unlock_pf:
6504         mutex_unlock(&pf->switch_mutex);
6505         return ret;
6506 }
6507
6508 /**
6509  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
6510  * @type: VSI pointer
6511  * @free_qvectors: a bool to specify if q_vectors need to be freed.
6512  *
6513  * On error: returns error code (negative)
6514  * On success: returns 0
6515  **/
6516 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
6517 {
6518         /* free the ring and vector containers */
6519         if (free_qvectors) {
6520                 kfree(vsi->q_vectors);
6521                 vsi->q_vectors = NULL;
6522         }
6523         kfree(vsi->tx_rings);
6524         vsi->tx_rings = NULL;
6525         vsi->rx_rings = NULL;
6526 }
6527
6528 /**
6529  * i40e_vsi_clear - Deallocate the VSI provided
6530  * @vsi: the VSI being un-configured
6531  **/
6532 static int i40e_vsi_clear(struct i40e_vsi *vsi)
6533 {
6534         struct i40e_pf *pf;
6535
6536         if (!vsi)
6537                 return 0;
6538
6539         if (!vsi->back)
6540                 goto free_vsi;
6541         pf = vsi->back;
6542
6543         mutex_lock(&pf->switch_mutex);
6544         if (!pf->vsi[vsi->idx]) {
6545                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
6546                         vsi->idx, vsi->idx, vsi, vsi->type);
6547                 goto unlock_vsi;
6548         }
6549
6550         if (pf->vsi[vsi->idx] != vsi) {
6551                 dev_err(&pf->pdev->dev,
6552                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
6553                         pf->vsi[vsi->idx]->idx,
6554                         pf->vsi[vsi->idx],
6555                         pf->vsi[vsi->idx]->type,
6556                         vsi->idx, vsi, vsi->type);
6557                 goto unlock_vsi;
6558         }
6559
6560         /* updates the pf for this cleared vsi */
6561         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
6562         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
6563
6564         i40e_vsi_free_arrays(vsi, true);
6565
6566         pf->vsi[vsi->idx] = NULL;
6567         if (vsi->idx < pf->next_vsi)
6568                 pf->next_vsi = vsi->idx;
6569
6570 unlock_vsi:
6571         mutex_unlock(&pf->switch_mutex);
6572 free_vsi:
6573         kfree(vsi);
6574
6575         return 0;
6576 }
6577
6578 /**
6579  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
6580  * @vsi: the VSI being cleaned
6581  **/
6582 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
6583 {
6584         int i;
6585
6586         if (vsi->tx_rings && vsi->tx_rings[0]) {
6587                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
6588                         kfree_rcu(vsi->tx_rings[i], rcu);
6589                         vsi->tx_rings[i] = NULL;
6590                         vsi->rx_rings[i] = NULL;
6591                 }
6592         }
6593 }
6594
6595 /**
6596  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
6597  * @vsi: the VSI being configured
6598  **/
6599 static int i40e_alloc_rings(struct i40e_vsi *vsi)
6600 {
6601         struct i40e_ring *tx_ring, *rx_ring;
6602         struct i40e_pf *pf = vsi->back;
6603         int i;
6604
6605         /* Set basic values in the rings to be used later during open() */
6606         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
6607                 /* allocate space for both Tx and Rx in one shot */
6608                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
6609                 if (!tx_ring)
6610                         goto err_out;
6611
6612                 tx_ring->queue_index = i;
6613                 tx_ring->reg_idx = vsi->base_queue + i;
6614                 tx_ring->ring_active = false;
6615                 tx_ring->vsi = vsi;
6616                 tx_ring->netdev = vsi->netdev;
6617                 tx_ring->dev = &pf->pdev->dev;
6618                 tx_ring->count = vsi->num_desc;
6619                 tx_ring->size = 0;
6620                 tx_ring->dcb_tc = 0;
6621                 vsi->tx_rings[i] = tx_ring;
6622
6623                 rx_ring = &tx_ring[1];
6624                 rx_ring->queue_index = i;
6625                 rx_ring->reg_idx = vsi->base_queue + i;
6626                 rx_ring->ring_active = false;
6627                 rx_ring->vsi = vsi;
6628                 rx_ring->netdev = vsi->netdev;
6629                 rx_ring->dev = &pf->pdev->dev;
6630                 rx_ring->count = vsi->num_desc;
6631                 rx_ring->size = 0;
6632                 rx_ring->dcb_tc = 0;
6633                 if (pf->flags & I40E_FLAG_16BYTE_RX_DESC_ENABLED)
6634                         set_ring_16byte_desc_enabled(rx_ring);
6635                 else
6636                         clear_ring_16byte_desc_enabled(rx_ring);
6637                 vsi->rx_rings[i] = rx_ring;
6638         }
6639
6640         return 0;
6641
6642 err_out:
6643         i40e_vsi_clear_rings(vsi);
6644         return -ENOMEM;
6645 }
6646
6647 /**
6648  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
6649  * @pf: board private structure
6650  * @vectors: the number of MSI-X vectors to request
6651  *
6652  * Returns the number of vectors reserved, or error
6653  **/
6654 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
6655 {
6656         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
6657                                         I40E_MIN_MSIX, vectors);
6658         if (vectors < 0) {
6659                 dev_info(&pf->pdev->dev,
6660                          "MSI-X vector reservation failed: %d\n", vectors);
6661                 vectors = 0;
6662         }
6663
6664         return vectors;
6665 }
6666
6667 /**
6668  * i40e_init_msix - Setup the MSIX capability
6669  * @pf: board private structure
6670  *
6671  * Work with the OS to set up the MSIX vectors needed.
6672  *
6673  * Returns 0 on success, negative on failure
6674  **/
6675 static int i40e_init_msix(struct i40e_pf *pf)
6676 {
6677         i40e_status err = 0;
6678         struct i40e_hw *hw = &pf->hw;
6679         int v_budget, i;
6680         int vec;
6681
6682         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
6683                 return -ENODEV;
6684
6685         /* The number of vectors we'll request will be comprised of:
6686          *   - Add 1 for "other" cause for Admin Queue events, etc.
6687          *   - The number of LAN queue pairs
6688          *      - Queues being used for RSS.
6689          *              We don't need as many as max_rss_size vectors.
6690          *              use rss_size instead in the calculation since that
6691          *              is governed by number of cpus in the system.
6692          *      - assumes symmetric Tx/Rx pairing
6693          *   - The number of VMDq pairs
6694 #ifdef I40E_FCOE
6695          *   - The number of FCOE qps.
6696 #endif
6697          * Once we count this up, try the request.
6698          *
6699          * If we can't get what we want, we'll simplify to nearly nothing
6700          * and try again.  If that still fails, we punt.
6701          */
6702         pf->num_lan_msix = pf->num_lan_qps - (pf->rss_size_max - pf->rss_size);
6703         pf->num_vmdq_msix = pf->num_vmdq_qps;
6704         v_budget = 1 + pf->num_lan_msix;
6705         v_budget += (pf->num_vmdq_vsis * pf->num_vmdq_msix);
6706         if (pf->flags & I40E_FLAG_FD_SB_ENABLED)
6707                 v_budget++;
6708
6709 #ifdef I40E_FCOE
6710         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
6711                 pf->num_fcoe_msix = pf->num_fcoe_qps;
6712                 v_budget += pf->num_fcoe_msix;
6713         }
6714
6715 #endif
6716         /* Scale down if necessary, and the rings will share vectors */
6717         v_budget = min_t(int, v_budget, hw->func_caps.num_msix_vectors);
6718
6719         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
6720                                    GFP_KERNEL);
6721         if (!pf->msix_entries)
6722                 return -ENOMEM;
6723
6724         for (i = 0; i < v_budget; i++)
6725                 pf->msix_entries[i].entry = i;
6726         vec = i40e_reserve_msix_vectors(pf, v_budget);
6727
6728         if (vec != v_budget) {
6729                 /* If we have limited resources, we will start with no vectors
6730                  * for the special features and then allocate vectors to some
6731                  * of these features based on the policy and at the end disable
6732                  * the features that did not get any vectors.
6733                  */
6734 #ifdef I40E_FCOE
6735                 pf->num_fcoe_qps = 0;
6736                 pf->num_fcoe_msix = 0;
6737 #endif
6738                 pf->num_vmdq_msix = 0;
6739         }
6740
6741         if (vec < I40E_MIN_MSIX) {
6742                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
6743                 kfree(pf->msix_entries);
6744                 pf->msix_entries = NULL;
6745                 return -ENODEV;
6746
6747         } else if (vec == I40E_MIN_MSIX) {
6748                 /* Adjust for minimal MSIX use */
6749                 pf->num_vmdq_vsis = 0;
6750                 pf->num_vmdq_qps = 0;
6751                 pf->num_lan_qps = 1;
6752                 pf->num_lan_msix = 1;
6753
6754         } else if (vec != v_budget) {
6755                 /* reserve the misc vector */
6756                 vec--;
6757
6758                 /* Scale vector usage down */
6759                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
6760                 pf->num_vmdq_vsis = 1;
6761
6762                 /* partition out the remaining vectors */
6763                 switch (vec) {
6764                 case 2:
6765                         pf->num_lan_msix = 1;
6766                         break;
6767                 case 3:
6768 #ifdef I40E_FCOE
6769                         /* give one vector to FCoE */
6770                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
6771                                 pf->num_lan_msix = 1;
6772                                 pf->num_fcoe_msix = 1;
6773                         }
6774 #else
6775                         pf->num_lan_msix = 2;
6776 #endif
6777                         break;
6778                 default:
6779 #ifdef I40E_FCOE
6780                         /* give one vector to FCoE */
6781                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
6782                                 pf->num_fcoe_msix = 1;
6783                                 vec--;
6784                         }
6785 #endif
6786                         pf->num_lan_msix = min_t(int, (vec / 2),
6787                                                  pf->num_lan_qps);
6788                         pf->num_vmdq_vsis = min_t(int, (vec - pf->num_lan_msix),
6789                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
6790                         break;
6791                 }
6792         }
6793
6794         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
6795             (pf->num_vmdq_msix == 0)) {
6796                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
6797                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
6798         }
6799 #ifdef I40E_FCOE
6800
6801         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
6802                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
6803                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
6804         }
6805 #endif
6806         return err;
6807 }
6808
6809 /**
6810  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
6811  * @vsi: the VSI being configured
6812  * @v_idx: index of the vector in the vsi struct
6813  *
6814  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
6815  **/
6816 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
6817 {
6818         struct i40e_q_vector *q_vector;
6819
6820         /* allocate q_vector */
6821         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
6822         if (!q_vector)
6823                 return -ENOMEM;
6824
6825         q_vector->vsi = vsi;
6826         q_vector->v_idx = v_idx;
6827         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
6828         if (vsi->netdev)
6829                 netif_napi_add(vsi->netdev, &q_vector->napi,
6830                                i40e_napi_poll, NAPI_POLL_WEIGHT);
6831
6832         q_vector->rx.latency_range = I40E_LOW_LATENCY;
6833         q_vector->tx.latency_range = I40E_LOW_LATENCY;
6834
6835         /* tie q_vector and vsi together */
6836         vsi->q_vectors[v_idx] = q_vector;
6837
6838         return 0;
6839 }
6840
6841 /**
6842  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
6843  * @vsi: the VSI being configured
6844  *
6845  * We allocate one q_vector per queue interrupt.  If allocation fails we
6846  * return -ENOMEM.
6847  **/
6848 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
6849 {
6850         struct i40e_pf *pf = vsi->back;
6851         int v_idx, num_q_vectors;
6852         int err;
6853
6854         /* if not MSIX, give the one vector only to the LAN VSI */
6855         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6856                 num_q_vectors = vsi->num_q_vectors;
6857         else if (vsi == pf->vsi[pf->lan_vsi])
6858                 num_q_vectors = 1;
6859         else
6860                 return -EINVAL;
6861
6862         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
6863                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
6864                 if (err)
6865                         goto err_out;
6866         }
6867
6868         return 0;
6869
6870 err_out:
6871         while (v_idx--)
6872                 i40e_free_q_vector(vsi, v_idx);
6873
6874         return err;
6875 }
6876
6877 /**
6878  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
6879  * @pf: board private structure to initialize
6880  **/
6881 static void i40e_init_interrupt_scheme(struct i40e_pf *pf)
6882 {
6883         int err = 0;
6884
6885         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
6886                 err = i40e_init_msix(pf);
6887                 if (err) {
6888                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
6889 #ifdef I40E_FCOE
6890                                        I40E_FLAG_FCOE_ENABLED   |
6891 #endif
6892                                        I40E_FLAG_RSS_ENABLED    |
6893                                        I40E_FLAG_DCB_CAPABLE    |
6894                                        I40E_FLAG_SRIOV_ENABLED  |
6895                                        I40E_FLAG_FD_SB_ENABLED  |
6896                                        I40E_FLAG_FD_ATR_ENABLED |
6897                                        I40E_FLAG_VMDQ_ENABLED);
6898
6899                         /* rework the queue expectations without MSIX */
6900                         i40e_determine_queue_usage(pf);
6901                 }
6902         }
6903
6904         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
6905             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
6906                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
6907                 err = pci_enable_msi(pf->pdev);
6908                 if (err) {
6909                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n", err);
6910                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
6911                 }
6912         }
6913
6914         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
6915                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
6916
6917         /* track first vector for misc interrupts */
6918         err = i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT-1);
6919 }
6920
6921 /**
6922  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
6923  * @pf: board private structure
6924  *
6925  * This sets up the handler for MSIX 0, which is used to manage the
6926  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
6927  * when in MSI or Legacy interrupt mode.
6928  **/
6929 static int i40e_setup_misc_vector(struct i40e_pf *pf)
6930 {
6931         struct i40e_hw *hw = &pf->hw;
6932         int err = 0;
6933
6934         /* Only request the irq if this is the first time through, and
6935          * not when we're rebuilding after a Reset
6936          */
6937         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
6938                 err = request_irq(pf->msix_entries[0].vector,
6939                                   i40e_intr, 0, pf->misc_int_name, pf);
6940                 if (err) {
6941                         dev_info(&pf->pdev->dev,
6942                                  "request_irq for %s failed: %d\n",
6943                                  pf->misc_int_name, err);
6944                         return -EFAULT;
6945                 }
6946         }
6947
6948         i40e_enable_misc_int_causes(hw);
6949
6950         /* associate no queues to the misc vector */
6951         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
6952         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
6953
6954         i40e_flush(hw);
6955
6956         i40e_irq_dynamic_enable_icr0(pf);
6957
6958         return err;
6959 }
6960
6961 /**
6962  * i40e_config_rss - Prepare for RSS if used
6963  * @pf: board private structure
6964  **/
6965 static int i40e_config_rss(struct i40e_pf *pf)
6966 {
6967         /* Set of random keys generated using kernel random number generator */
6968         static const u32 seed[I40E_PFQF_HKEY_MAX_INDEX + 1] = {0x41b01687,
6969                                 0x183cfd8c, 0xce880440, 0x580cbc3c, 0x35897377,
6970                                 0x328b25e1, 0x4fa98922, 0xb7d90c14, 0xd5bad70d,
6971                                 0xcd15a2c1, 0xe8580225, 0x4a1e9d11, 0xfe5731be};
6972         struct i40e_hw *hw = &pf->hw;
6973         u32 lut = 0;
6974         int i, j;
6975         u64 hena;
6976         u32 reg_val;
6977
6978         /* Fill out hash function seed */
6979         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
6980                 wr32(hw, I40E_PFQF_HKEY(i), seed[i]);
6981
6982         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
6983         hena = (u64)rd32(hw, I40E_PFQF_HENA(0)) |
6984                 ((u64)rd32(hw, I40E_PFQF_HENA(1)) << 32);
6985         hena |= I40E_DEFAULT_RSS_HENA;
6986         wr32(hw, I40E_PFQF_HENA(0), (u32)hena);
6987         wr32(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
6988
6989         /* Check capability and Set table size and register per hw expectation*/
6990         reg_val = rd32(hw, I40E_PFQF_CTL_0);
6991         if (hw->func_caps.rss_table_size == 512) {
6992                 reg_val |= I40E_PFQF_CTL_0_HASHLUTSIZE_512;
6993                 pf->rss_table_size = 512;
6994         } else {
6995                 pf->rss_table_size = 128;
6996                 reg_val &= ~I40E_PFQF_CTL_0_HASHLUTSIZE_512;
6997         }
6998         wr32(hw, I40E_PFQF_CTL_0, reg_val);
6999
7000         /* Populate the LUT with max no. of queues in round robin fashion */
7001         for (i = 0, j = 0; i < pf->rss_table_size; i++, j++) {
7002
7003                 /* The assumption is that lan qp count will be the highest
7004                  * qp count for any PF VSI that needs RSS.
7005                  * If multiple VSIs need RSS support, all the qp counts
7006                  * for those VSIs should be a power of 2 for RSS to work.
7007                  * If LAN VSI is the only consumer for RSS then this requirement
7008                  * is not necessary.
7009                  */
7010                 if (j == pf->rss_size)
7011                         j = 0;
7012                 /* lut = 4-byte sliding window of 4 lut entries */
7013                 lut = (lut << 8) | (j &
7014                          ((0x1 << pf->hw.func_caps.rss_table_entry_width) - 1));
7015                 /* On i = 3, we have 4 entries in lut; write to the register */
7016                 if ((i & 3) == 3)
7017                         wr32(hw, I40E_PFQF_HLUT(i >> 2), lut);
7018         }
7019         i40e_flush(hw);
7020
7021         return 0;
7022 }
7023
7024 /**
7025  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
7026  * @pf: board private structure
7027  * @queue_count: the requested queue count for rss.
7028  *
7029  * returns 0 if rss is not enabled, if enabled returns the final rss queue
7030  * count which may be different from the requested queue count.
7031  **/
7032 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
7033 {
7034         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
7035                 return 0;
7036
7037         queue_count = min_t(int, queue_count, pf->rss_size_max);
7038
7039         if (queue_count != pf->rss_size) {
7040                 i40e_prep_for_reset(pf);
7041
7042                 pf->rss_size = queue_count;
7043
7044                 i40e_reset_and_rebuild(pf, true);
7045                 i40e_config_rss(pf);
7046         }
7047         dev_info(&pf->pdev->dev, "RSS count:  %d\n", pf->rss_size);
7048         return pf->rss_size;
7049 }
7050
7051 /**
7052  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
7053  * @pf: board private structure to initialize
7054  *
7055  * i40e_sw_init initializes the Adapter private data structure.
7056  * Fields are initialized based on PCI device information and
7057  * OS network device settings (MTU size).
7058  **/
7059 static int i40e_sw_init(struct i40e_pf *pf)
7060 {
7061         int err = 0;
7062         int size;
7063
7064         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
7065                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
7066         pf->hw.debug_mask = pf->msg_enable | I40E_DEBUG_DIAG;
7067         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
7068                 if (I40E_DEBUG_USER & debug)
7069                         pf->hw.debug_mask = debug;
7070                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
7071                                                 I40E_DEFAULT_MSG_ENABLE);
7072         }
7073
7074         /* Set default capability flags */
7075         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
7076                     I40E_FLAG_MSI_ENABLED     |
7077                     I40E_FLAG_MSIX_ENABLED    |
7078                     I40E_FLAG_RX_1BUF_ENABLED;
7079
7080         /* Set default ITR */
7081         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
7082         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
7083
7084         /* Depending on PF configurations, it is possible that the RSS
7085          * maximum might end up larger than the available queues
7086          */
7087         pf->rss_size_max = 0x1 << pf->hw.func_caps.rss_table_entry_width;
7088         pf->rss_size = 1;
7089         pf->rss_size_max = min_t(int, pf->rss_size_max,
7090                                  pf->hw.func_caps.num_tx_qp);
7091         if (pf->hw.func_caps.rss) {
7092                 pf->flags |= I40E_FLAG_RSS_ENABLED;
7093                 pf->rss_size = min_t(int, pf->rss_size_max, num_online_cpus());
7094         }
7095
7096         /* MFP mode enabled */
7097         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.mfp_mode_1) {
7098                 pf->flags |= I40E_FLAG_MFP_ENABLED;
7099                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
7100         }
7101
7102         /* FW/NVM is not yet fixed in this regard */
7103         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
7104             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
7105                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
7106                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
7107                 /* Setup a counter for fd_atr per pf */
7108                 pf->fd_atr_cnt_idx = I40E_FD_ATR_STAT_IDX(pf->hw.pf_id);
7109                 if (!(pf->flags & I40E_FLAG_MFP_ENABLED)) {
7110                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7111                         /* Setup a counter for fd_sb per pf */
7112                         pf->fd_sb_cnt_idx = I40E_FD_SB_STAT_IDX(pf->hw.pf_id);
7113                 } else {
7114                         dev_info(&pf->pdev->dev,
7115                                  "Flow Director Sideband mode Disabled in MFP mode\n");
7116                 }
7117                 pf->fdir_pf_filter_count =
7118                                  pf->hw.func_caps.fd_filters_guaranteed;
7119                 pf->hw.fdir_shared_filter_count =
7120                                  pf->hw.func_caps.fd_filters_best_effort;
7121         }
7122
7123         if (pf->hw.func_caps.vmdq) {
7124                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
7125                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
7126                 pf->num_vmdq_qps = I40E_DEFAULT_QUEUES_PER_VMDQ;
7127         }
7128
7129 #ifdef I40E_FCOE
7130         err = i40e_init_pf_fcoe(pf);
7131         if (err)
7132                 dev_info(&pf->pdev->dev, "init_pf_fcoe failed: %d\n", err);
7133
7134 #endif /* I40E_FCOE */
7135 #ifdef CONFIG_PCI_IOV
7136         if (pf->hw.func_caps.num_vfs) {
7137                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
7138                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
7139                 pf->num_req_vfs = min_t(int,
7140                                         pf->hw.func_caps.num_vfs,
7141                                         I40E_MAX_VF_COUNT);
7142         }
7143 #endif /* CONFIG_PCI_IOV */
7144         pf->eeprom_version = 0xDEAD;
7145         pf->lan_veb = I40E_NO_VEB;
7146         pf->lan_vsi = I40E_NO_VSI;
7147
7148         /* set up queue assignment tracking */
7149         size = sizeof(struct i40e_lump_tracking)
7150                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
7151         pf->qp_pile = kzalloc(size, GFP_KERNEL);
7152         if (!pf->qp_pile) {
7153                 err = -ENOMEM;
7154                 goto sw_init_done;
7155         }
7156         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
7157         pf->qp_pile->search_hint = 0;
7158
7159         /* set up vector assignment tracking */
7160         size = sizeof(struct i40e_lump_tracking)
7161                 + (sizeof(u16) * pf->hw.func_caps.num_msix_vectors);
7162         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7163         if (!pf->irq_pile) {
7164                 kfree(pf->qp_pile);
7165                 err = -ENOMEM;
7166                 goto sw_init_done;
7167         }
7168         pf->irq_pile->num_entries = pf->hw.func_caps.num_msix_vectors;
7169         pf->irq_pile->search_hint = 0;
7170
7171         pf->tx_timeout_recovery_level = 1;
7172
7173         mutex_init(&pf->switch_mutex);
7174
7175 sw_init_done:
7176         return err;
7177 }
7178
7179 /**
7180  * i40e_set_ntuple - set the ntuple feature flag and take action
7181  * @pf: board private structure to initialize
7182  * @features: the feature set that the stack is suggesting
7183  *
7184  * returns a bool to indicate if reset needs to happen
7185  **/
7186 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
7187 {
7188         bool need_reset = false;
7189
7190         /* Check if Flow Director n-tuple support was enabled or disabled.  If
7191          * the state changed, we need to reset.
7192          */
7193         if (features & NETIF_F_NTUPLE) {
7194                 /* Enable filters and mark for reset */
7195                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
7196                         need_reset = true;
7197                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
7198         } else {
7199                 /* turn off filters, mark for reset and clear SW filter list */
7200                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7201                         need_reset = true;
7202                         i40e_fdir_filter_exit(pf);
7203                 }
7204                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7205                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
7206                 /* reset fd counters */
7207                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
7208                 pf->fdir_pf_active_filters = 0;
7209                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
7210                 dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
7211                 /* if ATR was auto disabled it can be re-enabled. */
7212                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
7213                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
7214                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
7215         }
7216         return need_reset;
7217 }
7218
7219 /**
7220  * i40e_set_features - set the netdev feature flags
7221  * @netdev: ptr to the netdev being adjusted
7222  * @features: the feature set that the stack is suggesting
7223  **/
7224 static int i40e_set_features(struct net_device *netdev,
7225                              netdev_features_t features)
7226 {
7227         struct i40e_netdev_priv *np = netdev_priv(netdev);
7228         struct i40e_vsi *vsi = np->vsi;
7229         struct i40e_pf *pf = vsi->back;
7230         bool need_reset;
7231
7232         if (features & NETIF_F_HW_VLAN_CTAG_RX)
7233                 i40e_vlan_stripping_enable(vsi);
7234         else
7235                 i40e_vlan_stripping_disable(vsi);
7236
7237         need_reset = i40e_set_ntuple(pf, features);
7238
7239         if (need_reset)
7240                 i40e_do_reset(pf, (1 << __I40E_PF_RESET_REQUESTED));
7241
7242         return 0;
7243 }
7244
7245 #ifdef CONFIG_I40E_VXLAN
7246 /**
7247  * i40e_get_vxlan_port_idx - Lookup a possibly offloaded for Rx UDP port
7248  * @pf: board private structure
7249  * @port: The UDP port to look up
7250  *
7251  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
7252  **/
7253 static u8 i40e_get_vxlan_port_idx(struct i40e_pf *pf, __be16 port)
7254 {
7255         u8 i;
7256
7257         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
7258                 if (pf->vxlan_ports[i] == port)
7259                         return i;
7260         }
7261
7262         return i;
7263 }
7264
7265 /**
7266  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
7267  * @netdev: This physical port's netdev
7268  * @sa_family: Socket Family that VXLAN is notifying us about
7269  * @port: New UDP port number that VXLAN started listening to
7270  **/
7271 static void i40e_add_vxlan_port(struct net_device *netdev,
7272                                 sa_family_t sa_family, __be16 port)
7273 {
7274         struct i40e_netdev_priv *np = netdev_priv(netdev);
7275         struct i40e_vsi *vsi = np->vsi;
7276         struct i40e_pf *pf = vsi->back;
7277         u8 next_idx;
7278         u8 idx;
7279
7280         if (sa_family == AF_INET6)
7281                 return;
7282
7283         idx = i40e_get_vxlan_port_idx(pf, port);
7284
7285         /* Check if port already exists */
7286         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7287                 netdev_info(netdev, "Port %d already offloaded\n", ntohs(port));
7288                 return;
7289         }
7290
7291         /* Now check if there is space to add the new port */
7292         next_idx = i40e_get_vxlan_port_idx(pf, 0);
7293
7294         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7295                 netdev_info(netdev, "Maximum number of UDP ports reached, not adding port %d\n",
7296                             ntohs(port));
7297                 return;
7298         }
7299
7300         /* New port: add it and mark its index in the bitmap */
7301         pf->vxlan_ports[next_idx] = port;
7302         pf->pending_vxlan_bitmap |= (1 << next_idx);
7303
7304         pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
7305 }
7306
7307 /**
7308  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
7309  * @netdev: This physical port's netdev
7310  * @sa_family: Socket Family that VXLAN is notifying us about
7311  * @port: UDP port number that VXLAN stopped listening to
7312  **/
7313 static void i40e_del_vxlan_port(struct net_device *netdev,
7314                                 sa_family_t sa_family, __be16 port)
7315 {
7316         struct i40e_netdev_priv *np = netdev_priv(netdev);
7317         struct i40e_vsi *vsi = np->vsi;
7318         struct i40e_pf *pf = vsi->back;
7319         u8 idx;
7320
7321         if (sa_family == AF_INET6)
7322                 return;
7323
7324         idx = i40e_get_vxlan_port_idx(pf, port);
7325
7326         /* Check if port already exists */
7327         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
7328                 /* if port exists, set it to 0 (mark for deletion)
7329                  * and make it pending
7330                  */
7331                 pf->vxlan_ports[idx] = 0;
7332
7333                 pf->pending_vxlan_bitmap |= (1 << idx);
7334
7335                 pf->flags |= I40E_FLAG_VXLAN_FILTER_SYNC;
7336         } else {
7337                 netdev_warn(netdev, "Port %d was not found, not deleting\n",
7338                             ntohs(port));
7339         }
7340 }
7341
7342 #endif
7343 static int i40e_get_phys_port_id(struct net_device *netdev,
7344                                  struct netdev_phys_port_id *ppid)
7345 {
7346         struct i40e_netdev_priv *np = netdev_priv(netdev);
7347         struct i40e_pf *pf = np->vsi->back;
7348         struct i40e_hw *hw = &pf->hw;
7349
7350         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
7351                 return -EOPNOTSUPP;
7352
7353         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
7354         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
7355
7356         return 0;
7357 }
7358
7359 #ifdef HAVE_FDB_OPS
7360 #ifdef USE_CONST_DEV_UC_CHAR
7361 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
7362                             struct net_device *dev,
7363                             const unsigned char *addr,
7364                             u16 flags)
7365 #else
7366 static int i40e_ndo_fdb_add(struct ndmsg *ndm,
7367                             struct net_device *dev,
7368                             unsigned char *addr,
7369                             u16 flags)
7370 #endif
7371 {
7372         struct i40e_netdev_priv *np = netdev_priv(dev);
7373         struct i40e_pf *pf = np->vsi->back;
7374         int err = 0;
7375
7376         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
7377                 return -EOPNOTSUPP;
7378
7379         /* Hardware does not support aging addresses so if a
7380          * ndm_state is given only allow permanent addresses
7381          */
7382         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
7383                 netdev_info(dev, "FDB only supports static addresses\n");
7384                 return -EINVAL;
7385         }
7386
7387         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
7388                 err = dev_uc_add_excl(dev, addr);
7389         else if (is_multicast_ether_addr(addr))
7390                 err = dev_mc_add_excl(dev, addr);
7391         else
7392                 err = -EINVAL;
7393
7394         /* Only return duplicate errors if NLM_F_EXCL is set */
7395         if (err == -EEXIST && !(flags & NLM_F_EXCL))
7396                 err = 0;
7397
7398         return err;
7399 }
7400
7401 #ifndef USE_DEFAULT_FDB_DEL_DUMP
7402 #ifdef USE_CONST_DEV_UC_CHAR
7403 static int i40e_ndo_fdb_del(struct ndmsg *ndm,
7404                             struct net_device *dev,
7405                             const unsigned char *addr)
7406 #else
7407 static int i40e_ndo_fdb_del(struct ndmsg *ndm,
7408                             struct net_device *dev,
7409                             unsigned char *addr)
7410 #endif
7411 {
7412         struct i40e_netdev_priv *np = netdev_priv(dev);
7413         struct i40e_pf *pf = np->vsi->back;
7414         int err = -EOPNOTSUPP;
7415
7416         if (ndm->ndm_state & NUD_PERMANENT) {
7417                 netdev_info(dev, "FDB only supports static addresses\n");
7418                 return -EINVAL;
7419         }
7420
7421         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
7422                 if (is_unicast_ether_addr(addr))
7423                         err = dev_uc_del(dev, addr);
7424                 else if (is_multicast_ether_addr(addr))
7425                         err = dev_mc_del(dev, addr);
7426                 else
7427                         err = -EINVAL;
7428         }
7429
7430         return err;
7431 }
7432
7433 static int i40e_ndo_fdb_dump(struct sk_buff *skb,
7434                              struct netlink_callback *cb,
7435                              struct net_device *dev,
7436                              struct net_device *filter_dev,
7437                              int idx)
7438 {
7439         struct i40e_netdev_priv *np = netdev_priv(dev);
7440         struct i40e_pf *pf = np->vsi->back;
7441
7442         if (pf->flags & I40E_FLAG_SRIOV_ENABLED)
7443                 idx = ndo_dflt_fdb_dump(skb, cb, dev, filter_dev, idx);
7444
7445         return idx;
7446 }
7447
7448 #endif /* USE_DEFAULT_FDB_DEL_DUMP */
7449 #endif /* HAVE_FDB_OPS */
7450 static const struct net_device_ops i40e_netdev_ops = {
7451         .ndo_open               = i40e_open,
7452         .ndo_stop               = i40e_close,
7453         .ndo_start_xmit         = i40e_lan_xmit_frame,
7454         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
7455         .ndo_set_rx_mode        = i40e_set_rx_mode,
7456         .ndo_validate_addr      = eth_validate_addr,
7457         .ndo_set_mac_address    = i40e_set_mac,
7458         .ndo_change_mtu         = i40e_change_mtu,
7459         .ndo_do_ioctl           = i40e_ioctl,
7460         .ndo_tx_timeout         = i40e_tx_timeout,
7461         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
7462         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
7463 #ifdef CONFIG_NET_POLL_CONTROLLER
7464         .ndo_poll_controller    = i40e_netpoll,
7465 #endif
7466         .ndo_setup_tc           = i40e_setup_tc,
7467 #ifdef I40E_FCOE
7468         .ndo_fcoe_enable        = i40e_fcoe_enable,
7469         .ndo_fcoe_disable       = i40e_fcoe_disable,
7470 #endif
7471         .ndo_set_features       = i40e_set_features,
7472         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
7473         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
7474         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
7475         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
7476         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
7477         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
7478 #ifdef CONFIG_I40E_VXLAN
7479         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
7480         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
7481 #endif
7482         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
7483 #ifdef HAVE_FDB_OPS
7484         .ndo_fdb_add            = i40e_ndo_fdb_add,
7485 #ifndef USE_DEFAULT_FDB_DEL_DUMP
7486         .ndo_fdb_del            = i40e_ndo_fdb_del,
7487         .ndo_fdb_dump           = i40e_ndo_fdb_dump,
7488 #endif
7489 #endif
7490 };
7491
7492 /**
7493  * i40e_config_netdev - Setup the netdev flags
7494  * @vsi: the VSI being configured
7495  *
7496  * Returns 0 on success, negative value on failure
7497  **/
7498 static int i40e_config_netdev(struct i40e_vsi *vsi)
7499 {
7500         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
7501         struct i40e_pf *pf = vsi->back;
7502         struct i40e_hw *hw = &pf->hw;
7503         struct i40e_netdev_priv *np;
7504         struct net_device *netdev;
7505         u8 mac_addr[ETH_ALEN];
7506         int etherdev_size;
7507
7508         etherdev_size = sizeof(struct i40e_netdev_priv);
7509         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
7510         if (!netdev)
7511                 return -ENOMEM;
7512
7513         vsi->netdev = netdev;
7514         np = netdev_priv(netdev);
7515         np->vsi = vsi;
7516
7517         netdev->hw_enc_features |= NETIF_F_IP_CSUM       |
7518                                   NETIF_F_GSO_UDP_TUNNEL |
7519                                   NETIF_F_TSO;
7520
7521         netdev->features = NETIF_F_SG                  |
7522                            NETIF_F_IP_CSUM             |
7523                            NETIF_F_SCTP_CSUM           |
7524                            NETIF_F_HIGHDMA             |
7525                            NETIF_F_GSO_UDP_TUNNEL      |
7526                            NETIF_F_HW_VLAN_CTAG_TX     |
7527                            NETIF_F_HW_VLAN_CTAG_RX     |
7528                            NETIF_F_HW_VLAN_CTAG_FILTER |
7529                            NETIF_F_IPV6_CSUM           |
7530                            NETIF_F_TSO                 |
7531                            NETIF_F_TSO_ECN             |
7532                            NETIF_F_TSO6                |
7533                            NETIF_F_RXCSUM              |
7534                            NETIF_F_RXHASH              |
7535                            0;
7536
7537         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
7538                 netdev->features |= NETIF_F_NTUPLE;
7539
7540         /* copy netdev features into list of user selectable features */
7541         netdev->hw_features |= netdev->features;
7542
7543         if (vsi->type == I40E_VSI_MAIN) {
7544                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
7545                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
7546                 /* The following steps are necessary to prevent reception
7547                  * of tagged packets - some older NVM configurations load a
7548                  * default a MAC-VLAN filter that accepts any tagged packet
7549                  * which must be replaced by a normal filter.
7550                  */
7551                 if (!i40e_rm_default_mac_filter(vsi, mac_addr))
7552                         i40e_add_filter(vsi, mac_addr,
7553                                         I40E_VLAN_ANY, false, true);
7554         } else {
7555                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
7556                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
7557                          pf->vsi[pf->lan_vsi]->netdev->name);
7558                 random_ether_addr(mac_addr);
7559                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
7560         }
7561         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
7562
7563         ether_addr_copy(netdev->dev_addr, mac_addr);
7564         ether_addr_copy(netdev->perm_addr, mac_addr);
7565         /* vlan gets same features (except vlan offload)
7566          * after any tweaks for specific VSI types
7567          */
7568         netdev->vlan_features = netdev->features & ~(NETIF_F_HW_VLAN_CTAG_TX |
7569                                                      NETIF_F_HW_VLAN_CTAG_RX |
7570                                                    NETIF_F_HW_VLAN_CTAG_FILTER);
7571         netdev->priv_flags |= IFF_UNICAST_FLT;
7572         netdev->priv_flags |= IFF_SUPP_NOFCS;
7573         /* Setup netdev TC information */
7574         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
7575
7576         netdev->netdev_ops = &i40e_netdev_ops;
7577         netdev->watchdog_timeo = 5 * HZ;
7578         i40e_set_ethtool_ops(netdev);
7579 #ifdef I40E_FCOE
7580         i40e_fcoe_config_netdev(netdev, vsi);
7581 #endif
7582
7583         return 0;
7584 }
7585
7586 /**
7587  * i40e_vsi_delete - Delete a VSI from the switch
7588  * @vsi: the VSI being removed
7589  *
7590  * Returns 0 on success, negative value on failure
7591  **/
7592 static void i40e_vsi_delete(struct i40e_vsi *vsi)
7593 {
7594         /* remove default VSI is not allowed */
7595         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
7596                 return;
7597
7598         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
7599 }
7600
7601 /**
7602  * i40e_add_vsi - Add a VSI to the switch
7603  * @vsi: the VSI being configured
7604  *
7605  * This initializes a VSI context depending on the VSI type to be added and
7606  * passes it down to the add_vsi aq command.
7607  **/
7608 static int i40e_add_vsi(struct i40e_vsi *vsi)
7609 {
7610         int ret = -ENODEV;
7611         struct i40e_mac_filter *f, *ftmp;
7612         struct i40e_pf *pf = vsi->back;
7613         struct i40e_hw *hw = &pf->hw;
7614         struct i40e_vsi_context ctxt;
7615         u8 enabled_tc = 0x1; /* TC0 enabled */
7616         int f_count = 0;
7617
7618         memset(&ctxt, 0, sizeof(ctxt));
7619         switch (vsi->type) {
7620         case I40E_VSI_MAIN:
7621                 /* The PF's main VSI is already setup as part of the
7622                  * device initialization, so we'll not bother with
7623                  * the add_vsi call, but we will retrieve the current
7624                  * VSI context.
7625                  */
7626                 ctxt.seid = pf->main_vsi_seid;
7627                 ctxt.pf_num = pf->hw.pf_id;
7628                 ctxt.vf_num = 0;
7629                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
7630                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
7631                 if (ret) {
7632                         dev_info(&pf->pdev->dev,
7633                                  "couldn't get pf vsi config, err %d, aq_err %d\n",
7634                                  ret, pf->hw.aq.asq_last_status);
7635                         return -ENOENT;
7636                 }
7637                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
7638                 vsi->info.valid_sections = 0;
7639
7640                 vsi->seid = ctxt.seid;
7641                 vsi->id = ctxt.vsi_number;
7642
7643                 enabled_tc = i40e_pf_get_tc_map(pf);
7644
7645                 /* MFP mode setup queue map and update VSI */
7646                 if (pf->flags & I40E_FLAG_MFP_ENABLED) {
7647                         memset(&ctxt, 0, sizeof(ctxt));
7648                         ctxt.seid = pf->main_vsi_seid;
7649                         ctxt.pf_num = pf->hw.pf_id;
7650                         ctxt.vf_num = 0;
7651                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
7652                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
7653                         if (ret) {
7654                                 dev_info(&pf->pdev->dev,
7655                                          "update vsi failed, aq_err=%d\n",
7656                                          pf->hw.aq.asq_last_status);
7657                                 ret = -ENOENT;
7658                                 goto err;
7659                         }
7660                         /* update the local VSI info queue map */
7661                         i40e_vsi_update_queue_map(vsi, &ctxt);
7662                         vsi->info.valid_sections = 0;
7663                 } else {
7664                         /* Default/Main VSI is only enabled for TC0
7665                          * reconfigure it to enable all TCs that are
7666                          * available on the port in SFP mode.
7667                          */
7668                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
7669                         if (ret) {
7670                                 dev_info(&pf->pdev->dev,
7671                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %d, aq_err %d\n",
7672                                          enabled_tc, ret,
7673                                          pf->hw.aq.asq_last_status);
7674                                 ret = -ENOENT;
7675                         }
7676                 }
7677                 break;
7678
7679         case I40E_VSI_FDIR:
7680                 ctxt.pf_num = hw->pf_id;
7681                 ctxt.vf_num = 0;
7682                 ctxt.uplink_seid = vsi->uplink_seid;
7683                 ctxt.connection_type = 0x1;     /* regular data port */
7684                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
7685                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
7686                 break;
7687
7688         case I40E_VSI_VMDQ2:
7689                 ctxt.pf_num = hw->pf_id;
7690                 ctxt.vf_num = 0;
7691                 ctxt.uplink_seid = vsi->uplink_seid;
7692                 ctxt.connection_type = 0x1;     /* regular data port */
7693                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
7694
7695                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
7696
7697                 /* This VSI is connected to VEB so the switch_id
7698                  * should be set to zero by default.
7699                  */
7700                 ctxt.info.switch_id = 0;
7701                 ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
7702
7703                 /* Setup the VSI tx/rx queue map for TC0 only for now */
7704                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
7705                 break;
7706
7707         case I40E_VSI_SRIOV:
7708                 ctxt.pf_num = hw->pf_id;
7709                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
7710                 ctxt.uplink_seid = vsi->uplink_seid;
7711                 ctxt.connection_type = 0x1;     /* regular data port */
7712                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
7713
7714                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
7715
7716                 /* This VSI is connected to VEB so the switch_id
7717                  * should be set to zero by default.
7718                  */
7719                 ctxt.info.switch_id = cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
7720
7721                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
7722                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
7723                 if (pf->vf[vsi->vf_id].spoofchk) {
7724                         ctxt.info.valid_sections |=
7725                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
7726                         ctxt.info.sec_flags |=
7727                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
7728                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
7729                 }
7730                 /* Setup the VSI tx/rx queue map for TC0 only for now */
7731                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
7732                 break;
7733
7734 #ifdef I40E_FCOE
7735         case I40E_VSI_FCOE:
7736                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
7737                 if (ret) {
7738                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
7739                         return ret;
7740                 }
7741                 break;
7742
7743 #endif /* I40E_FCOE */
7744         default:
7745                 return -ENODEV;
7746         }
7747
7748         if (vsi->type != I40E_VSI_MAIN) {
7749                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
7750                 if (ret) {
7751                         dev_info(&vsi->back->pdev->dev,
7752                                  "add vsi failed, aq_err=%d\n",
7753                                  vsi->back->hw.aq.asq_last_status);
7754                         ret = -ENOENT;
7755                         goto err;
7756                 }
7757                 memcpy(&vsi->info, &ctxt.info, sizeof(ctxt.info));
7758                 vsi->info.valid_sections = 0;
7759                 vsi->seid = ctxt.seid;
7760                 vsi->id = ctxt.vsi_number;
7761         }
7762
7763         /* If macvlan filters already exist, force them to get loaded */
7764         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
7765                 f->changed = true;
7766                 f_count++;
7767
7768                 if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
7769                         struct i40e_aqc_remove_macvlan_element_data element;
7770
7771                         memset(&element, 0, sizeof(element));
7772                         ether_addr_copy(element.mac_addr, f->macaddr);
7773                         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
7774                         ret = i40e_aq_remove_macvlan(hw, vsi->seid,
7775                                                      &element, 1, NULL);
7776                         if (ret) {
7777                                 /* some older FW has a different default */
7778                                 element.flags |=
7779                                                I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
7780                                 i40e_aq_remove_macvlan(hw, vsi->seid,
7781                                                        &element, 1, NULL);
7782                         }
7783
7784                         i40e_aq_mac_address_write(hw,
7785                                                   I40E_AQC_WRITE_TYPE_LAA_WOL,
7786                                                   f->macaddr, NULL);
7787                 }
7788         }
7789         if (f_count) {
7790                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
7791                 pf->flags |= I40E_FLAG_FILTER_SYNC;
7792         }
7793
7794         /* Update VSI BW information */
7795         ret = i40e_vsi_get_bw_info(vsi);
7796         if (ret) {
7797                 dev_info(&pf->pdev->dev,
7798                          "couldn't get vsi bw info, err %d, aq_err %d\n",
7799                          ret, pf->hw.aq.asq_last_status);
7800                 /* VSI is already added so not tearing that up */
7801                 ret = 0;
7802         }
7803
7804 err:
7805         return ret;
7806 }
7807
7808 /**
7809  * i40e_vsi_release - Delete a VSI and free its resources
7810  * @vsi: the VSI being removed
7811  *
7812  * Returns 0 on success or < 0 on error
7813  **/
7814 int i40e_vsi_release(struct i40e_vsi *vsi)
7815 {
7816         struct i40e_mac_filter *f, *ftmp;
7817         struct i40e_veb *veb = NULL;
7818         struct i40e_pf *pf;
7819         u16 uplink_seid;
7820         int i, n;
7821
7822         pf = vsi->back;
7823
7824         /* release of a VEB-owner or last VSI is not allowed */
7825         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
7826                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
7827                          vsi->seid, vsi->uplink_seid);
7828                 return -ENODEV;
7829         }
7830         if (vsi == pf->vsi[pf->lan_vsi] &&
7831             !test_bit(__I40E_DOWN, &pf->state)) {
7832                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
7833                 return -ENODEV;
7834         }
7835
7836         uplink_seid = vsi->uplink_seid;
7837         if (vsi->type != I40E_VSI_SRIOV) {
7838                 if (vsi->netdev_registered) {
7839                         vsi->netdev_registered = false;
7840                         if (vsi->netdev) {
7841                                 /* results in a call to i40e_close() */
7842                                 unregister_netdev(vsi->netdev);
7843                         }
7844                 } else {
7845                         i40e_vsi_close(vsi);
7846                 }
7847                 i40e_vsi_disable_irq(vsi);
7848         }
7849
7850         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
7851                 i40e_del_filter(vsi, f->macaddr, f->vlan,
7852                                 f->is_vf, f->is_netdev);
7853         i40e_sync_vsi_filters(vsi);
7854
7855         i40e_vsi_delete(vsi);
7856         i40e_vsi_free_q_vectors(vsi);
7857         if (vsi->netdev) {
7858                 free_netdev(vsi->netdev);
7859                 vsi->netdev = NULL;
7860         }
7861         i40e_vsi_clear_rings(vsi);
7862         i40e_vsi_clear(vsi);
7863
7864         /* If this was the last thing on the VEB, except for the
7865          * controlling VSI, remove the VEB, which puts the controlling
7866          * VSI onto the next level down in the switch.
7867          *
7868          * Well, okay, there's one more exception here: don't remove
7869          * the orphan VEBs yet.  We'll wait for an explicit remove request
7870          * from up the network stack.
7871          */
7872         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
7873                 if (pf->vsi[i] &&
7874                     pf->vsi[i]->uplink_seid == uplink_seid &&
7875                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
7876                         n++;      /* count the VSIs */
7877                 }
7878         }
7879         for (i = 0; i < I40E_MAX_VEB; i++) {
7880                 if (!pf->veb[i])
7881                         continue;
7882                 if (pf->veb[i]->uplink_seid == uplink_seid)
7883                         n++;     /* count the VEBs */
7884                 if (pf->veb[i]->seid == uplink_seid)
7885                         veb = pf->veb[i];
7886         }
7887         if (n == 0 && veb && veb->uplink_seid != 0)
7888                 i40e_veb_release(veb);
7889
7890         return 0;
7891 }
7892
7893 /**
7894  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
7895  * @vsi: ptr to the VSI
7896  *
7897  * This should only be called after i40e_vsi_mem_alloc() which allocates the
7898  * corresponding SW VSI structure and initializes num_queue_pairs for the
7899  * newly allocated VSI.
7900  *
7901  * Returns 0 on success or negative on failure
7902  **/
7903 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
7904 {
7905         int ret = -ENOENT;
7906         struct i40e_pf *pf = vsi->back;
7907
7908         if (vsi->q_vectors[0]) {
7909                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
7910                          vsi->seid);
7911                 return -EEXIST;
7912         }
7913
7914         if (vsi->base_vector) {
7915                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
7916                          vsi->seid, vsi->base_vector);
7917                 return -EEXIST;
7918         }
7919
7920         ret = i40e_vsi_alloc_q_vectors(vsi);
7921         if (ret) {
7922                 dev_info(&pf->pdev->dev,
7923                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
7924                          vsi->num_q_vectors, vsi->seid, ret);
7925                 vsi->num_q_vectors = 0;
7926                 goto vector_setup_out;
7927         }
7928
7929         if (vsi->num_q_vectors)
7930                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
7931                                                  vsi->num_q_vectors, vsi->idx);
7932         if (vsi->base_vector < 0) {
7933                 dev_info(&pf->pdev->dev,
7934                          "failed to get queue tracking for VSI %d, err=%d\n",
7935                          vsi->seid, vsi->base_vector);
7936                 i40e_vsi_free_q_vectors(vsi);
7937                 ret = -ENOENT;
7938                 goto vector_setup_out;
7939         }
7940
7941 vector_setup_out:
7942         return ret;
7943 }
7944
7945 /**
7946  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
7947  * @vsi: pointer to the vsi.
7948  *
7949  * This re-allocates a vsi's queue resources.
7950  *
7951  * Returns pointer to the successfully allocated and configured VSI sw struct
7952  * on success, otherwise returns NULL on failure.
7953  **/
7954 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
7955 {
7956         struct i40e_pf *pf = vsi->back;
7957         u8 enabled_tc;
7958         int ret;
7959
7960         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7961         i40e_vsi_clear_rings(vsi);
7962
7963         i40e_vsi_free_arrays(vsi, false);
7964         i40e_set_num_rings_in_vsi(vsi);
7965         ret = i40e_vsi_alloc_arrays(vsi, false);
7966         if (ret)
7967                 goto err_vsi;
7968
7969         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
7970         if (ret < 0) {
7971                 dev_info(&pf->pdev->dev, "VSI %d get_lump failed %d\n",
7972                          vsi->seid, ret);
7973                 goto err_vsi;
7974         }
7975         vsi->base_queue = ret;
7976
7977         /* Update the FW view of the VSI. Force a reset of TC and queue
7978          * layout configurations.
7979          */
7980         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
7981         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
7982         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
7983         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
7984
7985         /* assign it some queues */
7986         ret = i40e_alloc_rings(vsi);
7987         if (ret)
7988                 goto err_rings;
7989
7990         /* map all of the rings to the q_vectors */
7991         i40e_vsi_map_rings_to_vectors(vsi);
7992         return vsi;
7993
7994 err_rings:
7995         i40e_vsi_free_q_vectors(vsi);
7996         if (vsi->netdev_registered) {
7997                 vsi->netdev_registered = false;
7998                 unregister_netdev(vsi->netdev);
7999                 free_netdev(vsi->netdev);
8000                 vsi->netdev = NULL;
8001         }
8002         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
8003 err_vsi:
8004         i40e_vsi_clear(vsi);
8005         return NULL;
8006 }
8007
8008 /**
8009  * i40e_vsi_setup - Set up a VSI by a given type
8010  * @pf: board private structure
8011  * @type: VSI type
8012  * @uplink_seid: the switch element to link to
8013  * @param1: usage depends upon VSI type. For VF types, indicates VF id
8014  *
8015  * This allocates the sw VSI structure and its queue resources, then add a VSI
8016  * to the identified VEB.
8017  *
8018  * Returns pointer to the successfully allocated and configure VSI sw struct on
8019  * success, otherwise returns NULL on failure.
8020  **/
8021 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
8022                                 u16 uplink_seid, u32 param1)
8023 {
8024         struct i40e_vsi *vsi = NULL;
8025         struct i40e_veb *veb = NULL;
8026         int ret, i;
8027         int v_idx;
8028
8029         /* The requested uplink_seid must be either
8030          *     - the PF's port seid
8031          *              no VEB is needed because this is the PF
8032          *              or this is a Flow Director special case VSI
8033          *     - seid of an existing VEB
8034          *     - seid of a VSI that owns an existing VEB
8035          *     - seid of a VSI that doesn't own a VEB
8036          *              a new VEB is created and the VSI becomes the owner
8037          *     - seid of the PF VSI, which is what creates the first VEB
8038          *              this is a special case of the previous
8039          *
8040          * Find which uplink_seid we were given and create a new VEB if needed
8041          */
8042         for (i = 0; i < I40E_MAX_VEB; i++) {
8043                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
8044                         veb = pf->veb[i];
8045                         break;
8046                 }
8047         }
8048
8049         if (!veb && uplink_seid != pf->mac_seid) {
8050
8051                 for (i = 0; i < pf->num_alloc_vsi; i++) {
8052                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
8053                                 vsi = pf->vsi[i];
8054                                 break;
8055                         }
8056                 }
8057                 if (!vsi) {
8058                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
8059                                  uplink_seid);
8060                         return NULL;
8061                 }
8062
8063                 if (vsi->uplink_seid == pf->mac_seid)
8064                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
8065                                              vsi->tc_config.enabled_tc);
8066                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
8067                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8068                                              vsi->tc_config.enabled_tc);
8069
8070                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8071                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8072                                 veb = pf->veb[i];
8073                 }
8074                 if (!veb) {
8075                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
8076                         return NULL;
8077                 }
8078
8079                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
8080                 uplink_seid = veb->seid;
8081         }
8082
8083         /* get vsi sw struct */
8084         v_idx = i40e_vsi_mem_alloc(pf, type);
8085         if (v_idx < 0)
8086                 goto err_alloc;
8087         vsi = pf->vsi[v_idx];
8088         if (!vsi)
8089                 goto err_alloc;
8090         vsi->type = type;
8091         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
8092
8093         if (type == I40E_VSI_MAIN)
8094                 pf->lan_vsi = v_idx;
8095         else if (type == I40E_VSI_SRIOV)
8096                 vsi->vf_id = param1;
8097         /* assign it some queues */
8098         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
8099                                 vsi->idx);
8100         if (ret < 0) {
8101                 dev_info(&pf->pdev->dev, "VSI %d get_lump failed %d\n",
8102                          vsi->seid, ret);
8103                 goto err_vsi;
8104         }
8105         vsi->base_queue = ret;
8106
8107         /* get a VSI from the hardware */
8108         vsi->uplink_seid = uplink_seid;
8109         ret = i40e_add_vsi(vsi);
8110         if (ret)
8111                 goto err_vsi;
8112
8113         switch (vsi->type) {
8114         /* setup the netdev if needed */
8115         case I40E_VSI_MAIN:
8116         case I40E_VSI_VMDQ2:
8117         case I40E_VSI_FCOE:
8118                 ret = i40e_config_netdev(vsi);
8119                 if (ret)
8120                         goto err_netdev;
8121                 ret = register_netdev(vsi->netdev);
8122                 if (ret)
8123                         goto err_netdev;
8124                 vsi->netdev_registered = true;
8125                 netif_carrier_off(vsi->netdev);
8126 #ifdef CONFIG_I40E_DCB
8127                 /* Setup DCB netlink interface */
8128                 i40e_dcbnl_setup(vsi);
8129 #endif /* CONFIG_I40E_DCB */
8130                 /* fall through */
8131
8132         case I40E_VSI_FDIR:
8133                 /* set up vectors and rings if needed */
8134                 ret = i40e_vsi_setup_vectors(vsi);
8135                 if (ret)
8136                         goto err_msix;
8137
8138                 ret = i40e_alloc_rings(vsi);
8139                 if (ret)
8140                         goto err_rings;
8141
8142                 /* map all of the rings to the q_vectors */
8143                 i40e_vsi_map_rings_to_vectors(vsi);
8144
8145                 i40e_vsi_reset_stats(vsi);
8146                 break;
8147
8148         default:
8149                 /* no netdev or rings for the other VSI types */
8150                 break;
8151         }
8152
8153         return vsi;
8154
8155 err_rings:
8156         i40e_vsi_free_q_vectors(vsi);
8157 err_msix:
8158         if (vsi->netdev_registered) {
8159                 vsi->netdev_registered = false;
8160                 unregister_netdev(vsi->netdev);
8161                 free_netdev(vsi->netdev);
8162                 vsi->netdev = NULL;
8163         }
8164 err_netdev:
8165         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
8166 err_vsi:
8167         i40e_vsi_clear(vsi);
8168 err_alloc:
8169         return NULL;
8170 }
8171
8172 /**
8173  * i40e_veb_get_bw_info - Query VEB BW information
8174  * @veb: the veb to query
8175  *
8176  * Query the Tx scheduler BW configuration data for given VEB
8177  **/
8178 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
8179 {
8180         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
8181         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
8182         struct i40e_pf *pf = veb->pf;
8183         struct i40e_hw *hw = &pf->hw;
8184         u32 tc_bw_max;
8185         int ret = 0;
8186         int i;
8187
8188         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
8189                                                   &bw_data, NULL);
8190         if (ret) {
8191                 dev_info(&pf->pdev->dev,
8192                          "query veb bw config failed, aq_err=%d\n",
8193                          hw->aq.asq_last_status);
8194                 goto out;
8195         }
8196
8197         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
8198                                                    &ets_data, NULL);
8199         if (ret) {
8200                 dev_info(&pf->pdev->dev,
8201                          "query veb bw ets config failed, aq_err=%d\n",
8202                          hw->aq.asq_last_status);
8203                 goto out;
8204         }
8205
8206         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
8207         veb->bw_max_quanta = ets_data.tc_bw_max;
8208         veb->is_abs_credits = bw_data.absolute_credits_enable;
8209         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
8210                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
8211         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
8212                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
8213                 veb->bw_tc_limit_credits[i] =
8214                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
8215                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
8216         }
8217
8218 out:
8219         return ret;
8220 }
8221
8222 /**
8223  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
8224  * @pf: board private structure
8225  *
8226  * On error: returns error code (negative)
8227  * On success: returns vsi index in PF (positive)
8228  **/
8229 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
8230 {
8231         int ret = -ENOENT;
8232         struct i40e_veb *veb;
8233         int i;
8234
8235         /* Need to protect the allocation of switch elements at the PF level */
8236         mutex_lock(&pf->switch_mutex);
8237
8238         /* VEB list may be fragmented if VEB creation/destruction has
8239          * been happening.  We can afford to do a quick scan to look
8240          * for any free slots in the list.
8241          *
8242          * find next empty veb slot, looping back around if necessary
8243          */
8244         i = 0;
8245         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
8246                 i++;
8247         if (i >= I40E_MAX_VEB) {
8248                 ret = -ENOMEM;
8249                 goto err_alloc_veb;  /* out of VEB slots! */
8250         }
8251
8252         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
8253         if (!veb) {
8254                 ret = -ENOMEM;
8255                 goto err_alloc_veb;
8256         }
8257         veb->pf = pf;
8258         veb->idx = i;
8259         veb->enabled_tc = 1;
8260
8261         pf->veb[i] = veb;
8262         ret = i;
8263 err_alloc_veb:
8264         mutex_unlock(&pf->switch_mutex);
8265         return ret;
8266 }
8267
8268 /**
8269  * i40e_switch_branch_release - Delete a branch of the switch tree
8270  * @branch: where to start deleting
8271  *
8272  * This uses recursion to find the tips of the branch to be
8273  * removed, deleting until we get back to and can delete this VEB.
8274  **/
8275 static void i40e_switch_branch_release(struct i40e_veb *branch)
8276 {
8277         struct i40e_pf *pf = branch->pf;
8278         u16 branch_seid = branch->seid;
8279         u16 veb_idx = branch->idx;
8280         int i;
8281
8282         /* release any VEBs on this VEB - RECURSION */
8283         for (i = 0; i < I40E_MAX_VEB; i++) {
8284                 if (!pf->veb[i])
8285                         continue;
8286                 if (pf->veb[i]->uplink_seid == branch->seid)
8287                         i40e_switch_branch_release(pf->veb[i]);
8288         }
8289
8290         /* Release the VSIs on this VEB, but not the owner VSI.
8291          *
8292          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
8293          *       the VEB itself, so don't use (*branch) after this loop.
8294          */
8295         for (i = 0; i < pf->num_alloc_vsi; i++) {
8296                 if (!pf->vsi[i])
8297                         continue;
8298                 if (pf->vsi[i]->uplink_seid == branch_seid &&
8299                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
8300                         i40e_vsi_release(pf->vsi[i]);
8301                 }
8302         }
8303
8304         /* There's one corner case where the VEB might not have been
8305          * removed, so double check it here and remove it if needed.
8306          * This case happens if the veb was created from the debugfs
8307          * commands and no VSIs were added to it.
8308          */
8309         if (pf->veb[veb_idx])
8310                 i40e_veb_release(pf->veb[veb_idx]);
8311 }
8312
8313 /**
8314  * i40e_veb_clear - remove veb struct
8315  * @veb: the veb to remove
8316  **/
8317 static void i40e_veb_clear(struct i40e_veb *veb)
8318 {
8319         if (!veb)
8320                 return;
8321
8322         if (veb->pf) {
8323                 struct i40e_pf *pf = veb->pf;
8324
8325                 mutex_lock(&pf->switch_mutex);
8326                 if (pf->veb[veb->idx] == veb)
8327                         pf->veb[veb->idx] = NULL;
8328                 mutex_unlock(&pf->switch_mutex);
8329         }
8330
8331         kfree(veb);
8332 }
8333
8334 /**
8335  * i40e_veb_release - Delete a VEB and free its resources
8336  * @veb: the VEB being removed
8337  **/
8338 void i40e_veb_release(struct i40e_veb *veb)
8339 {
8340         struct i40e_vsi *vsi = NULL;
8341         struct i40e_pf *pf;
8342         int i, n = 0;
8343
8344         pf = veb->pf;
8345
8346         /* find the remaining VSI and check for extras */
8347         for (i = 0; i < pf->num_alloc_vsi; i++) {
8348                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
8349                         n++;
8350                         vsi = pf->vsi[i];
8351                 }
8352         }
8353         if (n != 1) {
8354                 dev_info(&pf->pdev->dev,
8355                          "can't remove VEB %d with %d VSIs left\n",
8356                          veb->seid, n);
8357                 return;
8358         }
8359
8360         /* move the remaining VSI to uplink veb */
8361         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
8362         if (veb->uplink_seid) {
8363                 vsi->uplink_seid = veb->uplink_seid;
8364                 if (veb->uplink_seid == pf->mac_seid)
8365                         vsi->veb_idx = I40E_NO_VEB;
8366                 else
8367                         vsi->veb_idx = veb->veb_idx;
8368         } else {
8369                 /* floating VEB */
8370                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
8371                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
8372         }
8373
8374         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
8375         i40e_veb_clear(veb);
8376 }
8377
8378 /**
8379  * i40e_add_veb - create the VEB in the switch
8380  * @veb: the VEB to be instantiated
8381  * @vsi: the controlling VSI
8382  **/
8383 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
8384 {
8385         bool is_default = false;
8386         bool is_cloud = false;
8387         int ret;
8388
8389         /* get a VEB from the hardware */
8390         ret = i40e_aq_add_veb(&veb->pf->hw, veb->uplink_seid, vsi->seid,
8391                               veb->enabled_tc, is_default,
8392                               is_cloud, &veb->seid, NULL);
8393         if (ret) {
8394                 dev_info(&veb->pf->pdev->dev,
8395                          "couldn't add VEB, err %d, aq_err %d\n",
8396                          ret, veb->pf->hw.aq.asq_last_status);
8397                 return -EPERM;
8398         }
8399
8400         /* get statistics counter */
8401         ret = i40e_aq_get_veb_parameters(&veb->pf->hw, veb->seid, NULL, NULL,
8402                                          &veb->stats_idx, NULL, NULL, NULL);
8403         if (ret) {
8404                 dev_info(&veb->pf->pdev->dev,
8405                          "couldn't get VEB statistics idx, err %d, aq_err %d\n",
8406                          ret, veb->pf->hw.aq.asq_last_status);
8407                 return -EPERM;
8408         }
8409         ret = i40e_veb_get_bw_info(veb);
8410         if (ret) {
8411                 dev_info(&veb->pf->pdev->dev,
8412                          "couldn't get VEB bw info, err %d, aq_err %d\n",
8413                          ret, veb->pf->hw.aq.asq_last_status);
8414                 i40e_aq_delete_element(&veb->pf->hw, veb->seid, NULL);
8415                 return -ENOENT;
8416         }
8417
8418         vsi->uplink_seid = veb->seid;
8419         vsi->veb_idx = veb->idx;
8420         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
8421
8422         return 0;
8423 }
8424
8425 /**
8426  * i40e_veb_setup - Set up a VEB
8427  * @pf: board private structure
8428  * @flags: VEB setup flags
8429  * @uplink_seid: the switch element to link to
8430  * @vsi_seid: the initial VSI seid
8431  * @enabled_tc: Enabled TC bit-map
8432  *
8433  * This allocates the sw VEB structure and links it into the switch
8434  * It is possible and legal for this to be a duplicate of an already
8435  * existing VEB.  It is also possible for both uplink and vsi seids
8436  * to be zero, in order to create a floating VEB.
8437  *
8438  * Returns pointer to the successfully allocated VEB sw struct on
8439  * success, otherwise returns NULL on failure.
8440  **/
8441 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
8442                                 u16 uplink_seid, u16 vsi_seid,
8443                                 u8 enabled_tc)
8444 {
8445         struct i40e_veb *veb, *uplink_veb = NULL;
8446         int vsi_idx, veb_idx;
8447         int ret;
8448
8449         /* if one seid is 0, the other must be 0 to create a floating relay */
8450         if ((uplink_seid == 0 || vsi_seid == 0) &&
8451             (uplink_seid + vsi_seid != 0)) {
8452                 dev_info(&pf->pdev->dev,
8453                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
8454                          uplink_seid, vsi_seid);
8455                 return NULL;
8456         }
8457
8458         /* make sure there is such a vsi and uplink */
8459         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
8460                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
8461                         break;
8462         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
8463                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
8464                          vsi_seid);
8465                 return NULL;
8466         }
8467
8468         if (uplink_seid && uplink_seid != pf->mac_seid) {
8469                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
8470                         if (pf->veb[veb_idx] &&
8471                             pf->veb[veb_idx]->seid == uplink_seid) {
8472                                 uplink_veb = pf->veb[veb_idx];
8473                                 break;
8474                         }
8475                 }
8476                 if (!uplink_veb) {
8477                         dev_info(&pf->pdev->dev,
8478                                  "uplink seid %d not found\n", uplink_seid);
8479                         return NULL;
8480                 }
8481         }
8482
8483         /* get veb sw struct */
8484         veb_idx = i40e_veb_mem_alloc(pf);
8485         if (veb_idx < 0)
8486                 goto err_alloc;
8487         veb = pf->veb[veb_idx];
8488         veb->flags = flags;
8489         veb->uplink_seid = uplink_seid;
8490         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
8491         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
8492
8493         /* create the VEB in the switch */
8494         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
8495         if (ret)
8496                 goto err_veb;
8497         if (vsi_idx == pf->lan_vsi)
8498                 pf->lan_veb = veb->idx;
8499
8500         return veb;
8501
8502 err_veb:
8503         i40e_veb_clear(veb);
8504 err_alloc:
8505         return NULL;
8506 }
8507
8508 /**
8509  * i40e_setup_pf_switch_element - set pf vars based on switch type
8510  * @pf: board private structure
8511  * @ele: element we are building info from
8512  * @num_reported: total number of elements
8513  * @printconfig: should we print the contents
8514  *
8515  * helper function to assist in extracting a few useful SEID values.
8516  **/
8517 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
8518                                 struct i40e_aqc_switch_config_element_resp *ele,
8519                                 u16 num_reported, bool printconfig)
8520 {
8521         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
8522         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
8523         u8 element_type = ele->element_type;
8524         u16 seid = le16_to_cpu(ele->seid);
8525
8526         if (printconfig)
8527                 dev_info(&pf->pdev->dev,
8528                          "type=%d seid=%d uplink=%d downlink=%d\n",
8529                          element_type, seid, uplink_seid, downlink_seid);
8530
8531         switch (element_type) {
8532         case I40E_SWITCH_ELEMENT_TYPE_MAC:
8533                 pf->mac_seid = seid;
8534                 break;
8535         case I40E_SWITCH_ELEMENT_TYPE_VEB:
8536                 /* Main VEB? */
8537                 if (uplink_seid != pf->mac_seid)
8538                         break;
8539                 if (pf->lan_veb == I40E_NO_VEB) {
8540                         int v;
8541
8542                         /* find existing or else empty VEB */
8543                         for (v = 0; v < I40E_MAX_VEB; v++) {
8544                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
8545                                         pf->lan_veb = v;
8546                                         break;
8547                                 }
8548                         }
8549                         if (pf->lan_veb == I40E_NO_VEB) {
8550                                 v = i40e_veb_mem_alloc(pf);
8551                                 if (v < 0)
8552                                         break;
8553                                 pf->lan_veb = v;
8554                         }
8555                 }
8556
8557                 pf->veb[pf->lan_veb]->seid = seid;
8558                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
8559                 pf->veb[pf->lan_veb]->pf = pf;
8560                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
8561                 break;
8562         case I40E_SWITCH_ELEMENT_TYPE_VSI:
8563                 if (num_reported != 1)
8564                         break;
8565                 /* This is immediately after a reset so we can assume this is
8566                  * the PF's VSI
8567                  */
8568                 pf->mac_seid = uplink_seid;
8569                 pf->pf_seid = downlink_seid;
8570                 pf->main_vsi_seid = seid;
8571                 if (printconfig)
8572                         dev_info(&pf->pdev->dev,
8573                                  "pf_seid=%d main_vsi_seid=%d\n",
8574                                  pf->pf_seid, pf->main_vsi_seid);
8575                 break;
8576         case I40E_SWITCH_ELEMENT_TYPE_PF:
8577         case I40E_SWITCH_ELEMENT_TYPE_VF:
8578         case I40E_SWITCH_ELEMENT_TYPE_EMP:
8579         case I40E_SWITCH_ELEMENT_TYPE_BMC:
8580         case I40E_SWITCH_ELEMENT_TYPE_PE:
8581         case I40E_SWITCH_ELEMENT_TYPE_PA:
8582                 /* ignore these for now */
8583                 break;
8584         default:
8585                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
8586                          element_type, seid);
8587                 break;
8588         }
8589 }
8590
8591 /**
8592  * i40e_fetch_switch_configuration - Get switch config from firmware
8593  * @pf: board private structure
8594  * @printconfig: should we print the contents
8595  *
8596  * Get the current switch configuration from the device and
8597  * extract a few useful SEID values.
8598  **/
8599 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
8600 {
8601         struct i40e_aqc_get_switch_config_resp *sw_config;
8602         u16 next_seid = 0;
8603         int ret = 0;
8604         u8 *aq_buf;
8605         int i;
8606
8607         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
8608         if (!aq_buf)
8609                 return -ENOMEM;
8610
8611         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
8612         do {
8613                 u16 num_reported, num_total;
8614
8615                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
8616                                                 I40E_AQ_LARGE_BUF,
8617                                                 &next_seid, NULL);
8618                 if (ret) {
8619                         dev_info(&pf->pdev->dev,
8620                                  "get switch config failed %d aq_err=%x\n",
8621                                  ret, pf->hw.aq.asq_last_status);
8622                         kfree(aq_buf);
8623                         return -ENOENT;
8624                 }
8625
8626                 num_reported = le16_to_cpu(sw_config->header.num_reported);
8627                 num_total = le16_to_cpu(sw_config->header.num_total);
8628
8629                 if (printconfig)
8630                         dev_info(&pf->pdev->dev,
8631                                  "header: %d reported %d total\n",
8632                                  num_reported, num_total);
8633
8634                 for (i = 0; i < num_reported; i++) {
8635                         struct i40e_aqc_switch_config_element_resp *ele =
8636                                 &sw_config->element[i];
8637
8638                         i40e_setup_pf_switch_element(pf, ele, num_reported,
8639                                                      printconfig);
8640                 }
8641         } while (next_seid != 0);
8642
8643         kfree(aq_buf);
8644         return ret;
8645 }
8646
8647 /**
8648  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
8649  * @pf: board private structure
8650  * @reinit: if the Main VSI needs to re-initialized.
8651  *
8652  * Returns 0 on success, negative value on failure
8653  **/
8654 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
8655 {
8656         int ret;
8657
8658         /* find out what's out there already */
8659         ret = i40e_fetch_switch_configuration(pf, false);
8660         if (ret) {
8661                 dev_info(&pf->pdev->dev,
8662                          "couldn't fetch switch config, err %d, aq_err %d\n",
8663                          ret, pf->hw.aq.asq_last_status);
8664                 return ret;
8665         }
8666         i40e_pf_reset_stats(pf);
8667
8668         /* first time setup */
8669         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
8670                 struct i40e_vsi *vsi = NULL;
8671                 u16 uplink_seid;
8672
8673                 /* Set up the PF VSI associated with the PF's main VSI
8674                  * that is already in the HW switch
8675                  */
8676                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
8677                         uplink_seid = pf->veb[pf->lan_veb]->seid;
8678                 else
8679                         uplink_seid = pf->mac_seid;
8680                 if (pf->lan_vsi == I40E_NO_VSI)
8681                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
8682                 else if (reinit)
8683                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
8684                 if (!vsi) {
8685                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
8686                         i40e_fdir_teardown(pf);
8687                         return -EAGAIN;
8688                 }
8689         } else {
8690                 /* force a reset of TC and queue layout configurations */
8691                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
8692                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
8693                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
8694                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
8695         }
8696         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
8697
8698         i40e_fdir_sb_setup(pf);
8699
8700         /* Setup static PF queue filter control settings */
8701         ret = i40e_setup_pf_filter_control(pf);
8702         if (ret) {
8703                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
8704                          ret);
8705                 /* Failure here should not stop continuing other steps */
8706         }
8707
8708         /* enable RSS in the HW, even for only one queue, as the stack can use
8709          * the hash
8710          */
8711         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
8712                 i40e_config_rss(pf);
8713
8714         /* fill in link information and enable LSE reporting */
8715         i40e_update_link_info(&pf->hw, true);
8716         i40e_link_event(pf);
8717
8718         /* Initialize user-specific link properties */
8719         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
8720                                   I40E_AQ_AN_COMPLETED) ? true : false);
8721
8722         i40e_ptp_init(pf);
8723
8724         return ret;
8725 }
8726
8727 /**
8728  * i40e_determine_queue_usage - Work out queue distribution
8729  * @pf: board private structure
8730  **/
8731 static void i40e_determine_queue_usage(struct i40e_pf *pf)
8732 {
8733         int queues_left;
8734
8735         pf->num_lan_qps = 0;
8736 #ifdef I40E_FCOE
8737         pf->num_fcoe_qps = 0;
8738 #endif
8739
8740         /* Find the max queues to be put into basic use.  We'll always be
8741          * using TC0, whether or not DCB is running, and TC0 will get the
8742          * big RSS set.
8743          */
8744         queues_left = pf->hw.func_caps.num_tx_qp;
8745
8746         if ((queues_left == 1) ||
8747             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
8748                 /* one qp for PF, no queues for anything else */
8749                 queues_left = 0;
8750                 pf->rss_size = pf->num_lan_qps = 1;
8751
8752                 /* make sure all the fancies are disabled */
8753                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
8754 #ifdef I40E_FCOE
8755                                I40E_FLAG_FCOE_ENABLED   |
8756 #endif
8757                                I40E_FLAG_FD_SB_ENABLED  |
8758                                I40E_FLAG_FD_ATR_ENABLED |
8759                                I40E_FLAG_DCB_CAPABLE    |
8760                                I40E_FLAG_SRIOV_ENABLED  |
8761                                I40E_FLAG_VMDQ_ENABLED);
8762         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
8763                                   I40E_FLAG_FD_SB_ENABLED |
8764                                   I40E_FLAG_FD_ATR_ENABLED |
8765                                   I40E_FLAG_DCB_CAPABLE))) {
8766                 /* one qp for PF */
8767                 pf->rss_size = pf->num_lan_qps = 1;
8768                 queues_left -= pf->num_lan_qps;
8769
8770                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
8771 #ifdef I40E_FCOE
8772                                I40E_FLAG_FCOE_ENABLED   |
8773 #endif
8774                                I40E_FLAG_FD_SB_ENABLED  |
8775                                I40E_FLAG_FD_ATR_ENABLED |
8776                                I40E_FLAG_DCB_ENABLED    |
8777                                I40E_FLAG_VMDQ_ENABLED);
8778         } else {
8779                 /* Not enough queues for all TCs */
8780                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
8781                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
8782                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
8783                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
8784                 }
8785                 pf->num_lan_qps = pf->rss_size_max;
8786                 queues_left -= pf->num_lan_qps;
8787         }
8788
8789 #ifdef I40E_FCOE
8790         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
8791                 if (I40E_DEFAULT_FCOE <= queues_left) {
8792                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
8793                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
8794                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
8795                 } else {
8796                         pf->num_fcoe_qps = 0;
8797                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
8798                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
8799                 }
8800
8801                 queues_left -= pf->num_fcoe_qps;
8802         }
8803
8804 #endif
8805         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8806                 if (queues_left > 1) {
8807                         queues_left -= 1; /* save 1 queue for FD */
8808                 } else {
8809                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8810                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
8811                 }
8812         }
8813
8814         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
8815             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
8816                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
8817                                         (queues_left / pf->num_vf_qps));
8818                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
8819         }
8820
8821         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
8822             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
8823                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
8824                                           (queues_left / pf->num_vmdq_qps));
8825                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
8826         }
8827
8828         pf->queues_left = queues_left;
8829 #ifdef I40E_FCOE
8830         dev_info(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
8831 #endif
8832 }
8833
8834 /**
8835  * i40e_setup_pf_filter_control - Setup PF static filter control
8836  * @pf: PF to be setup
8837  *
8838  * i40e_setup_pf_filter_control sets up a pf's initial filter control
8839  * settings. If PE/FCoE are enabled then it will also set the per PF
8840  * based filter sizes required for them. It also enables Flow director,
8841  * ethertype and macvlan type filter settings for the pf.
8842  *
8843  * Returns 0 on success, negative on failure
8844  **/
8845 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
8846 {
8847         struct i40e_filter_control_settings *settings = &pf->filter_settings;
8848
8849         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
8850
8851         /* Flow Director is enabled */
8852         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
8853                 settings->enable_fdir = true;
8854
8855         /* Ethtype and MACVLAN filters enabled for PF */
8856         settings->enable_ethtype = true;
8857         settings->enable_macvlan = true;
8858
8859         if (i40e_set_filter_control(&pf->hw, settings))
8860                 return -ENOENT;
8861
8862         return 0;
8863 }
8864
8865 #define INFO_STRING_LEN 255
8866 static void i40e_print_features(struct i40e_pf *pf)
8867 {
8868         struct i40e_hw *hw = &pf->hw;
8869         char *buf, *string;
8870
8871         string = kzalloc(INFO_STRING_LEN, GFP_KERNEL);
8872         if (!string) {
8873                 dev_err(&pf->pdev->dev, "Features string allocation failed\n");
8874                 return;
8875         }
8876
8877         buf = string;
8878
8879         buf += sprintf(string, "Features: PF-id[%d] ", hw->pf_id);
8880 #ifdef CONFIG_PCI_IOV
8881         buf += sprintf(buf, "VFs: %d ", pf->num_req_vfs);
8882 #endif
8883         buf += sprintf(buf, "VSIs: %d QP: %d ", pf->hw.func_caps.num_vsis,
8884                        pf->vsi[pf->lan_vsi]->num_queue_pairs);
8885
8886         if (pf->flags & I40E_FLAG_RSS_ENABLED)
8887                 buf += sprintf(buf, "RSS ");
8888         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
8889                 buf += sprintf(buf, "FD_ATR ");
8890         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8891                 buf += sprintf(buf, "FD_SB ");
8892                 buf += sprintf(buf, "NTUPLE ");
8893         }
8894         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
8895                 buf += sprintf(buf, "DCB ");
8896         if (pf->flags & I40E_FLAG_PTP)
8897                 buf += sprintf(buf, "PTP ");
8898 #ifdef I40E_FCOE
8899         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
8900                 buf += sprintf(buf, "FCOE ");
8901 #endif
8902
8903         BUG_ON(buf > (string + INFO_STRING_LEN));
8904         dev_info(&pf->pdev->dev, "%s\n", string);
8905         kfree(string);
8906 }
8907
8908 /**
8909  * i40e_probe - Device initialization routine
8910  * @pdev: PCI device information struct
8911  * @ent: entry in i40e_pci_tbl
8912  *
8913  * i40e_probe initializes a pf identified by a pci_dev structure.
8914  * The OS initialization, configuring of the pf private structure,
8915  * and a hardware reset occur.
8916  *
8917  * Returns 0 on success, negative on failure
8918  **/
8919 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
8920 {
8921         struct i40e_pf *pf;
8922         struct i40e_hw *hw;
8923         static u16 pfs_found;
8924         u16 link_status;
8925         int err = 0;
8926         u32 len;
8927         u32 i;
8928
8929         err = pci_enable_device_mem(pdev);
8930         if (err)
8931                 return err;
8932
8933         /* set up for high or low dma */
8934         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
8935         if (err) {
8936                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
8937                 if (err) {
8938                         dev_err(&pdev->dev,
8939                                 "DMA configuration failed: 0x%x\n", err);
8940                         goto err_dma;
8941                 }
8942         }
8943
8944         /* set up pci connections */
8945         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
8946                                            IORESOURCE_MEM), i40e_driver_name);
8947         if (err) {
8948                 dev_info(&pdev->dev,
8949                          "pci_request_selected_regions failed %d\n", err);
8950                 goto err_pci_reg;
8951         }
8952
8953         pci_enable_pcie_error_reporting(pdev);
8954         pci_set_master(pdev);
8955
8956         /* Now that we have a PCI connection, we need to do the
8957          * low level device setup.  This is primarily setting up
8958          * the Admin Queue structures and then querying for the
8959          * device's current profile information.
8960          */
8961         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
8962         if (!pf) {
8963                 err = -ENOMEM;
8964                 goto err_pf_alloc;
8965         }
8966         pf->next_vsi = 0;
8967         pf->pdev = pdev;
8968         set_bit(__I40E_DOWN, &pf->state);
8969
8970         hw = &pf->hw;
8971         hw->back = pf;
8972         hw->hw_addr = ioremap(pci_resource_start(pdev, 0),
8973                               pci_resource_len(pdev, 0));
8974         if (!hw->hw_addr) {
8975                 err = -EIO;
8976                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
8977                          (unsigned int)pci_resource_start(pdev, 0),
8978                          (unsigned int)pci_resource_len(pdev, 0), err);
8979                 goto err_ioremap;
8980         }
8981         hw->vendor_id = pdev->vendor;
8982         hw->device_id = pdev->device;
8983         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
8984         hw->subsystem_vendor_id = pdev->subsystem_vendor;
8985         hw->subsystem_device_id = pdev->subsystem_device;
8986         hw->bus.device = PCI_SLOT(pdev->devfn);
8987         hw->bus.func = PCI_FUNC(pdev->devfn);
8988         pf->instance = pfs_found;
8989
8990         /* do a special CORER for clearing PXE mode once at init */
8991         if (hw->revision_id == 0 &&
8992             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
8993                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
8994                 i40e_flush(hw);
8995                 msleep(200);
8996                 pf->corer_count++;
8997
8998                 i40e_clear_pxe_mode(hw);
8999         }
9000
9001         /* Reset here to make sure all is clean and to define PF 'n' */
9002         i40e_clear_hw(hw);
9003         err = i40e_pf_reset(hw);
9004         if (err) {
9005                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
9006                 goto err_pf_reset;
9007         }
9008         pf->pfr_count++;
9009
9010         hw->aq.num_arq_entries = I40E_AQ_LEN;
9011         hw->aq.num_asq_entries = I40E_AQ_LEN;
9012         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
9013         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
9014         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
9015         snprintf(pf->misc_int_name, sizeof(pf->misc_int_name) - 1,
9016                  "%s-pf%d:misc",
9017                  dev_driver_string(&pf->pdev->dev), pf->hw.pf_id);
9018
9019         err = i40e_init_shared_code(hw);
9020         if (err) {
9021                 dev_info(&pdev->dev, "init_shared_code failed: %d\n", err);
9022                 goto err_pf_reset;
9023         }
9024
9025         /* set up a default setting for link flow control */
9026         pf->hw.fc.requested_mode = I40E_FC_NONE;
9027
9028         err = i40e_init_adminq(hw);
9029         dev_info(&pdev->dev, "%s\n", i40e_fw_version_str(hw));
9030         if (err) {
9031                 dev_info(&pdev->dev,
9032                          "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");
9033                 goto err_pf_reset;
9034         }
9035
9036         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
9037             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
9038                 dev_info(&pdev->dev,
9039                          "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");
9040         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
9041                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
9042                 dev_info(&pdev->dev,
9043                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
9044
9045
9046         i40e_verify_eeprom(pf);
9047
9048         /* Rev 0 hardware was never productized */
9049         if (hw->revision_id < 1)
9050                 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");
9051
9052         i40e_clear_pxe_mode(hw);
9053         err = i40e_get_capabilities(pf);
9054         if (err)
9055                 goto err_adminq_setup;
9056
9057         err = i40e_sw_init(pf);
9058         if (err) {
9059                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
9060                 goto err_sw_init;
9061         }
9062
9063         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
9064                                 hw->func_caps.num_rx_qp,
9065                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
9066         if (err) {
9067                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
9068                 goto err_init_lan_hmc;
9069         }
9070
9071         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
9072         if (err) {
9073                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
9074                 err = -ENOENT;
9075                 goto err_configure_lan_hmc;
9076         }
9077
9078         i40e_get_mac_addr(hw, hw->mac.addr);
9079         if (!is_valid_ether_addr(hw->mac.addr)) {
9080                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
9081                 err = -EIO;
9082                 goto err_mac_addr;
9083         }
9084         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
9085         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
9086         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
9087         if (is_valid_ether_addr(hw->mac.port_addr))
9088                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
9089 #ifdef I40E_FCOE
9090         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
9091         if (err)
9092                 dev_info(&pdev->dev,
9093                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
9094         if (!is_valid_ether_addr(hw->mac.san_addr)) {
9095                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
9096                          hw->mac.san_addr);
9097                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
9098         }
9099         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
9100 #endif /* I40E_FCOE */
9101
9102         pci_set_drvdata(pdev, pf);
9103         pci_save_state(pdev);
9104 #ifdef CONFIG_I40E_DCB
9105         err = i40e_init_pf_dcb(pf);
9106         if (err) {
9107                 dev_info(&pdev->dev, "init_pf_dcb failed: %d\n", err);
9108                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
9109                 /* Continue without DCB enabled */
9110         }
9111 #endif /* CONFIG_I40E_DCB */
9112
9113         /* set up periodic task facility */
9114         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
9115         pf->service_timer_period = HZ;
9116
9117         INIT_WORK(&pf->service_task, i40e_service_task);
9118         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
9119         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
9120         pf->link_check_timeout = jiffies;
9121
9122         /* WoL defaults to disabled */
9123         pf->wol_en = false;
9124         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
9125
9126         /* set up the main switch operations */
9127         i40e_determine_queue_usage(pf);
9128         i40e_init_interrupt_scheme(pf);
9129
9130         /* The number of VSIs reported by the FW is the minimum guaranteed
9131          * to us; HW supports far more and we share the remaining pool with
9132          * the other PFs. We allocate space for more than the guarantee with
9133          * the understanding that we might not get them all later.
9134          */
9135         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
9136                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
9137         else
9138                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
9139
9140         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
9141         len = sizeof(struct i40e_vsi *) * pf->num_alloc_vsi;
9142         pf->vsi = kzalloc(len, GFP_KERNEL);
9143         if (!pf->vsi) {
9144                 err = -ENOMEM;
9145                 goto err_switch_setup;
9146         }
9147
9148         err = i40e_setup_pf_switch(pf, false);
9149         if (err) {
9150                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
9151                 goto err_vsis;
9152         }
9153         /* if FDIR VSI was set up, start it now */
9154         for (i = 0; i < pf->num_alloc_vsi; i++) {
9155                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
9156                         i40e_vsi_open(pf->vsi[i]);
9157                         break;
9158                 }
9159         }
9160
9161         /* The main driver is (mostly) up and happy. We need to set this state
9162          * before setting up the misc vector or we get a race and the vector
9163          * ends up disabled forever.
9164          */
9165         clear_bit(__I40E_DOWN, &pf->state);
9166
9167         /* In case of MSIX we are going to setup the misc vector right here
9168          * to handle admin queue events etc. In case of legacy and MSI
9169          * the misc functionality and queue processing is combined in
9170          * the same vector and that gets setup at open.
9171          */
9172         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
9173                 err = i40e_setup_misc_vector(pf);
9174                 if (err) {
9175                         dev_info(&pdev->dev,
9176                                  "setup of misc vector failed: %d\n", err);
9177                         goto err_vsis;
9178                 }
9179         }
9180
9181 #ifdef CONFIG_PCI_IOV
9182         /* prep for VF support */
9183         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
9184             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
9185             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
9186                 u32 val;
9187
9188                 /* disable link interrupts for VFs */
9189                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
9190                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
9191                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
9192                 i40e_flush(hw);
9193
9194                 if (pci_num_vf(pdev)) {
9195                         dev_info(&pdev->dev,
9196                                  "Active VFs found, allocating resources.\n");
9197                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
9198                         if (err)
9199                                 dev_info(&pdev->dev,
9200                                          "Error %d allocating resources for existing VFs\n",
9201                                          err);
9202                 }
9203         }
9204 #endif /* CONFIG_PCI_IOV */
9205
9206         pfs_found++;
9207
9208         i40e_dbg_pf_init(pf);
9209
9210         /* tell the firmware that we're starting */
9211         i40e_send_version(pf);
9212
9213         /* since everything's happy, start the service_task timer */
9214         mod_timer(&pf->service_timer,
9215                   round_jiffies(jiffies + pf->service_timer_period));
9216
9217 #ifdef I40E_FCOE
9218         /* create FCoE interface */
9219         i40e_fcoe_vsi_setup(pf);
9220
9221 #endif
9222         /* Get the negotiated link width and speed from PCI config space */
9223         pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA, &link_status);
9224
9225         i40e_set_pci_config_data(hw, link_status);
9226
9227         dev_info(&pdev->dev, "PCI-Express: %s %s\n",
9228                 (hw->bus.speed == i40e_bus_speed_8000 ? "Speed 8.0GT/s" :
9229                  hw->bus.speed == i40e_bus_speed_5000 ? "Speed 5.0GT/s" :
9230                  hw->bus.speed == i40e_bus_speed_2500 ? "Speed 2.5GT/s" :
9231                  "Unknown"),
9232                 (hw->bus.width == i40e_bus_width_pcie_x8 ? "Width x8" :
9233                  hw->bus.width == i40e_bus_width_pcie_x4 ? "Width x4" :
9234                  hw->bus.width == i40e_bus_width_pcie_x2 ? "Width x2" :
9235                  hw->bus.width == i40e_bus_width_pcie_x1 ? "Width x1" :
9236                  "Unknown"));
9237
9238         if (hw->bus.width < i40e_bus_width_pcie_x8 ||
9239             hw->bus.speed < i40e_bus_speed_8000) {
9240                 dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
9241                 dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
9242         }
9243
9244         /* print a string summarizing features */
9245         i40e_print_features(pf);
9246
9247         return 0;
9248
9249         /* Unwind what we've done if something failed in the setup */
9250 err_vsis:
9251         set_bit(__I40E_DOWN, &pf->state);
9252         i40e_clear_interrupt_scheme(pf);
9253         kfree(pf->vsi);
9254 err_switch_setup:
9255         i40e_reset_interrupt_capability(pf);
9256         del_timer_sync(&pf->service_timer);
9257 err_mac_addr:
9258 err_configure_lan_hmc:
9259         (void)i40e_shutdown_lan_hmc(hw);
9260 err_init_lan_hmc:
9261         kfree(pf->qp_pile);
9262         kfree(pf->irq_pile);
9263 err_sw_init:
9264 err_adminq_setup:
9265         (void)i40e_shutdown_adminq(hw);
9266 err_pf_reset:
9267         iounmap(hw->hw_addr);
9268 err_ioremap:
9269         kfree(pf);
9270 err_pf_alloc:
9271         pci_disable_pcie_error_reporting(pdev);
9272         pci_release_selected_regions(pdev,
9273                                      pci_select_bars(pdev, IORESOURCE_MEM));
9274 err_pci_reg:
9275 err_dma:
9276         pci_disable_device(pdev);
9277         return err;
9278 }
9279
9280 /**
9281  * i40e_remove - Device removal routine
9282  * @pdev: PCI device information struct
9283  *
9284  * i40e_remove is called by the PCI subsystem to alert the driver
9285  * that is should release a PCI device.  This could be caused by a
9286  * Hot-Plug event, or because the driver is going to be removed from
9287  * memory.
9288  **/
9289 static void i40e_remove(struct pci_dev *pdev)
9290 {
9291         struct i40e_pf *pf = pci_get_drvdata(pdev);
9292         i40e_status ret_code;
9293         int i;
9294
9295         i40e_dbg_pf_exit(pf);
9296
9297         i40e_ptp_stop(pf);
9298
9299         /* no more scheduling of any task */
9300         set_bit(__I40E_DOWN, &pf->state);
9301         del_timer_sync(&pf->service_timer);
9302         cancel_work_sync(&pf->service_task);
9303
9304         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
9305                 i40e_free_vfs(pf);
9306                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
9307         }
9308
9309         i40e_fdir_teardown(pf);
9310
9311         /* If there is a switch structure or any orphans, remove them.
9312          * This will leave only the PF's VSI remaining.
9313          */
9314         for (i = 0; i < I40E_MAX_VEB; i++) {
9315                 if (!pf->veb[i])
9316                         continue;
9317
9318                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
9319                     pf->veb[i]->uplink_seid == 0)
9320                         i40e_switch_branch_release(pf->veb[i]);
9321         }
9322
9323         /* Now we can shutdown the PF's VSI, just before we kill
9324          * adminq and hmc.
9325          */
9326         if (pf->vsi[pf->lan_vsi])
9327                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
9328
9329         i40e_stop_misc_vector(pf);
9330         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
9331                 synchronize_irq(pf->msix_entries[0].vector);
9332                 free_irq(pf->msix_entries[0].vector, pf);
9333         }
9334
9335         /* shutdown and destroy the HMC */
9336         if (pf->hw.hmc.hmc_obj) {
9337                 ret_code = i40e_shutdown_lan_hmc(&pf->hw);
9338                 if (ret_code)
9339                         dev_warn(&pdev->dev,
9340                                  "Failed to destroy the HMC resources: %d\n",
9341                                  ret_code);
9342         }
9343
9344         /* shutdown the adminq */
9345         ret_code = i40e_shutdown_adminq(&pf->hw);
9346         if (ret_code)
9347                 dev_warn(&pdev->dev,
9348                          "Failed to destroy the Admin Queue resources: %d\n",
9349                          ret_code);
9350
9351         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
9352         i40e_clear_interrupt_scheme(pf);
9353         for (i = 0; i < pf->num_alloc_vsi; i++) {
9354                 if (pf->vsi[i]) {
9355                         i40e_vsi_clear_rings(pf->vsi[i]);
9356                         i40e_vsi_clear(pf->vsi[i]);
9357                         pf->vsi[i] = NULL;
9358                 }
9359         }
9360
9361         for (i = 0; i < I40E_MAX_VEB; i++) {
9362                 kfree(pf->veb[i]);
9363                 pf->veb[i] = NULL;
9364         }
9365
9366         kfree(pf->qp_pile);
9367         kfree(pf->irq_pile);
9368         kfree(pf->vsi);
9369
9370         iounmap(pf->hw.hw_addr);
9371         kfree(pf);
9372         pci_release_selected_regions(pdev,
9373                                      pci_select_bars(pdev, IORESOURCE_MEM));
9374
9375         pci_disable_pcie_error_reporting(pdev);
9376         pci_disable_device(pdev);
9377 }
9378
9379 /**
9380  * i40e_pci_error_detected - warning that something funky happened in PCI land
9381  * @pdev: PCI device information struct
9382  *
9383  * Called to warn that something happened and the error handling steps
9384  * are in progress.  Allows the driver to quiesce things, be ready for
9385  * remediation.
9386  **/
9387 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
9388                                                 enum pci_channel_state error)
9389 {
9390         struct i40e_pf *pf = pci_get_drvdata(pdev);
9391
9392         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
9393
9394         /* shutdown all operations */
9395         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
9396                 rtnl_lock();
9397                 i40e_prep_for_reset(pf);
9398                 rtnl_unlock();
9399         }
9400
9401         /* Request a slot reset */
9402         return PCI_ERS_RESULT_NEED_RESET;
9403 }
9404
9405 /**
9406  * i40e_pci_error_slot_reset - a PCI slot reset just happened
9407  * @pdev: PCI device information struct
9408  *
9409  * Called to find if the driver can work with the device now that
9410  * the pci slot has been reset.  If a basic connection seems good
9411  * (registers are readable and have sane content) then return a
9412  * happy little PCI_ERS_RESULT_xxx.
9413  **/
9414 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
9415 {
9416         struct i40e_pf *pf = pci_get_drvdata(pdev);
9417         pci_ers_result_t result;
9418         int err;
9419         u32 reg;
9420
9421         dev_info(&pdev->dev, "%s\n", __func__);
9422         if (pci_enable_device_mem(pdev)) {
9423                 dev_info(&pdev->dev,
9424                          "Cannot re-enable PCI device after reset.\n");
9425                 result = PCI_ERS_RESULT_DISCONNECT;
9426         } else {
9427                 pci_set_master(pdev);
9428                 pci_restore_state(pdev);
9429                 pci_save_state(pdev);
9430                 pci_wake_from_d3(pdev, false);
9431
9432                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
9433                 if (reg == 0)
9434                         result = PCI_ERS_RESULT_RECOVERED;
9435                 else
9436                         result = PCI_ERS_RESULT_DISCONNECT;
9437         }
9438
9439         err = pci_cleanup_aer_uncorrect_error_status(pdev);
9440         if (err) {
9441                 dev_info(&pdev->dev,
9442                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
9443                          err);
9444                 /* non-fatal, continue */
9445         }
9446
9447         return result;
9448 }
9449
9450 /**
9451  * i40e_pci_error_resume - restart operations after PCI error recovery
9452  * @pdev: PCI device information struct
9453  *
9454  * Called to allow the driver to bring things back up after PCI error
9455  * and/or reset recovery has finished.
9456  **/
9457 static void i40e_pci_error_resume(struct pci_dev *pdev)
9458 {
9459         struct i40e_pf *pf = pci_get_drvdata(pdev);
9460
9461         dev_info(&pdev->dev, "%s\n", __func__);
9462         if (test_bit(__I40E_SUSPENDED, &pf->state))
9463                 return;
9464
9465         rtnl_lock();
9466         i40e_handle_reset_warning(pf);
9467         rtnl_lock();
9468 }
9469
9470 /**
9471  * i40e_shutdown - PCI callback for shutting down
9472  * @pdev: PCI device information struct
9473  **/
9474 static void i40e_shutdown(struct pci_dev *pdev)
9475 {
9476         struct i40e_pf *pf = pci_get_drvdata(pdev);
9477         struct i40e_hw *hw = &pf->hw;
9478
9479         set_bit(__I40E_SUSPENDED, &pf->state);
9480         set_bit(__I40E_DOWN, &pf->state);
9481         rtnl_lock();
9482         i40e_prep_for_reset(pf);
9483         rtnl_unlock();
9484
9485         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
9486         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
9487
9488         if (system_state == SYSTEM_POWER_OFF) {
9489                 pci_wake_from_d3(pdev, pf->wol_en);
9490                 pci_set_power_state(pdev, PCI_D3hot);
9491         }
9492 }
9493
9494 #ifdef CONFIG_PM
9495 /**
9496  * i40e_suspend - PCI callback for moving to D3
9497  * @pdev: PCI device information struct
9498  **/
9499 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
9500 {
9501         struct i40e_pf *pf = pci_get_drvdata(pdev);
9502         struct i40e_hw *hw = &pf->hw;
9503
9504         set_bit(__I40E_SUSPENDED, &pf->state);
9505         set_bit(__I40E_DOWN, &pf->state);
9506         rtnl_lock();
9507         i40e_prep_for_reset(pf);
9508         rtnl_unlock();
9509
9510         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
9511         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
9512
9513         pci_wake_from_d3(pdev, pf->wol_en);
9514         pci_set_power_state(pdev, PCI_D3hot);
9515
9516         return 0;
9517 }
9518
9519 /**
9520  * i40e_resume - PCI callback for waking up from D3
9521  * @pdev: PCI device information struct
9522  **/
9523 static int i40e_resume(struct pci_dev *pdev)
9524 {
9525         struct i40e_pf *pf = pci_get_drvdata(pdev);
9526         u32 err;
9527
9528         pci_set_power_state(pdev, PCI_D0);
9529         pci_restore_state(pdev);
9530         /* pci_restore_state() clears dev->state_saves, so
9531          * call pci_save_state() again to restore it.
9532          */
9533         pci_save_state(pdev);
9534
9535         err = pci_enable_device_mem(pdev);
9536         if (err) {
9537                 dev_err(&pdev->dev,
9538                         "%s: Cannot enable PCI device from suspend\n",
9539                         __func__);
9540                 return err;
9541         }
9542         pci_set_master(pdev);
9543
9544         /* no wakeup events while running */
9545         pci_wake_from_d3(pdev, false);
9546
9547         /* handling the reset will rebuild the device state */
9548         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
9549                 clear_bit(__I40E_DOWN, &pf->state);
9550                 rtnl_lock();
9551                 i40e_reset_and_rebuild(pf, false);
9552                 rtnl_unlock();
9553         }
9554
9555         return 0;
9556 }
9557
9558 #endif
9559 static const struct pci_error_handlers i40e_err_handler = {
9560         .error_detected = i40e_pci_error_detected,
9561         .slot_reset = i40e_pci_error_slot_reset,
9562         .resume = i40e_pci_error_resume,
9563 };
9564
9565 static struct pci_driver i40e_driver = {
9566         .name     = i40e_driver_name,
9567         .id_table = i40e_pci_tbl,
9568         .probe    = i40e_probe,
9569         .remove   = i40e_remove,
9570 #ifdef CONFIG_PM
9571         .suspend  = i40e_suspend,
9572         .resume   = i40e_resume,
9573 #endif
9574         .shutdown = i40e_shutdown,
9575         .err_handler = &i40e_err_handler,
9576         .sriov_configure = i40e_pci_sriov_configure,
9577 };
9578
9579 /**
9580  * i40e_init_module - Driver registration routine
9581  *
9582  * i40e_init_module is the first routine called when the driver is
9583  * loaded. All it does is register with the PCI subsystem.
9584  **/
9585 static int __init i40e_init_module(void)
9586 {
9587         pr_info("%s: %s - version %s\n", i40e_driver_name,
9588                 i40e_driver_string, i40e_driver_version_str);
9589         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
9590         i40e_dbg_init();
9591         return pci_register_driver(&i40e_driver);
9592 }
9593 module_init(i40e_init_module);
9594
9595 /**
9596  * i40e_exit_module - Driver exit cleanup routine
9597  *
9598  * i40e_exit_module is called just before the driver is removed
9599  * from memory.
9600  **/
9601 static void __exit i40e_exit_module(void)
9602 {
9603         pci_unregister_driver(&i40e_driver);
9604         i40e_dbg_exit();
9605 }
9606 module_exit(i40e_exit_module);