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

   1 /*******************************************************************************
   2  *
   3  * Intel Ethernet Controller XL710 Family Linux Driver
   4  * Copyright(c) 2013 - 2016 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 #include <linux/etherdevice.h>
  28 #include <linux/of_net.h>
  29 #include <linux/pci.h>
  30
  31 /* Local includes */
  32 #include "i40e.h"
  33 #include "i40e_diag.h"
  34 #include <net/udp_tunnel.h>
  35
  36 const char i40e_driver_name[] = "i40e";
  37 static const char i40e_driver_string[] =
  38                         "Intel(R) Ethernet Connection XL710 Network Driver";
  39
  40 #define DRV_KERN "-k"
  41
  42 #define DRV_VERSION_MAJOR 1
  43 #define DRV_VERSION_MINOR 6
  44 #define DRV_VERSION_BUILD 4
  45 #define DRV_VERSION __stringify(DRV_VERSION_MAJOR) "." \
  46              __stringify(DRV_VERSION_MINOR) "." \
  47              __stringify(DRV_VERSION_BUILD)    DRV_KERN
  48 const char i40e_driver_version_str[] = DRV_VERSION;
  49 static const char i40e_copyright[] = "Copyright (c) 2013 - 2014 Intel Corporation.";
  50
  51 /* a bit of forward declarations */
  52 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi);
  53 static void i40e_handle_reset_warning(struct i40e_pf *pf);
  54 static int i40e_add_vsi(struct i40e_vsi *vsi);
  55 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi);
  56 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit);
  57 static int i40e_setup_misc_vector(struct i40e_pf *pf);
  58 static void i40e_determine_queue_usage(struct i40e_pf *pf);
  59 static int i40e_setup_pf_filter_control(struct i40e_pf *pf);
  60 static void i40e_fill_rss_lut(struct i40e_pf *pf, u8 *lut,
  61                               u16 rss_table_size, u16 rss_size);
  62 static void i40e_fdir_sb_setup(struct i40e_pf *pf);
  63 static int i40e_veb_get_bw_info(struct i40e_veb *veb);
  64
  65 /* i40e_pci_tbl - PCI Device ID Table
  66  *
  67  * Last entry must be all 0s
  68  *
  69  * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
  70  *   Class, Class Mask, private data (not used) }
  71  */
  72 static const struct pci_device_id i40e_pci_tbl[] = {
  73         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_XL710), 0},
  74         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QEMU), 0},
  75         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_B), 0},
  76         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_C), 0},
  77         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_A), 0},
  78         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_B), 0},
  79         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_C), 0},
  80         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T), 0},
  81         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T4), 0},
  82         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  83         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_X722), 0},
  84         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_X722), 0},
  85         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_X722), 0},
  86         {PCI_VDEVICE(INTEL, I40E_DEV_ID_1G_BASE_T_X722), 0},
  87         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T_X722), 0},
  88         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_I_X722), 0},
  89         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_I_X722), 0},
  90         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  91         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2_A), 0},
  92         /* required last entry */
  93         {0, }
  94 };
  95 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
  96
  97 #define I40E_MAX_VF_COUNT 128
  98 static int debug = -1;
  99 module_param(debug, int, 0);
 100 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
 101
 102 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
 103 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
 104 MODULE_LICENSE("GPL");
 105 MODULE_VERSION(DRV_VERSION);
 106
 107 static struct workqueue_struct *i40e_wq;
 108
 109 /**
 110  * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
 111  * @hw:   pointer to the HW structure
 112  * @mem:  ptr to mem struct to fill out
 113  * @size: size of memory requested
 114  * @alignment: what to align the allocation to
 115  **/
 116 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
 117                             u64 size, u32 alignment)
 118 {
 119         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 120
 121         mem->size = ALIGN(size, alignment);
 122         mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
 123                                       &mem->pa, GFP_KERNEL);
 124         if (!mem->va)
 125                 return -ENOMEM;
 126
 127         return 0;
 128 }
 129
 130 /**
 131  * i40e_free_dma_mem_d - OS specific memory free for shared code
 132  * @hw:   pointer to the HW structure
 133  * @mem:  ptr to mem struct to free
 134  **/
 135 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
 136 {
 137         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 138
 139         dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
 140         mem->va = NULL;
 141         mem->pa = 0;
 142         mem->size = 0;
 143
 144         return 0;
 145 }
 146
 147 /**
 148  * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 149  * @hw:   pointer to the HW structure
 150  * @mem:  ptr to mem struct to fill out
 151  * @size: size of memory requested
 152  **/
 153 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
 154                              u32 size)
 155 {
 156         mem->size = size;
 157         mem->va = kzalloc(size, GFP_KERNEL);
 158
 159         if (!mem->va)
 160                 return -ENOMEM;
 161
 162         return 0;
 163 }
 164
 165 /**
 166  * i40e_free_virt_mem_d - OS specific memory free for shared code
 167  * @hw:   pointer to the HW structure
 168  * @mem:  ptr to mem struct to free
 169  **/
 170 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
 171 {
 172         /* it's ok to kfree a NULL pointer */
 173         kfree(mem->va);
 174         mem->va = NULL;
 175         mem->size = 0;
 176
 177         return 0;
 178 }
 179
 180 /**
 181  * i40e_get_lump - find a lump of free generic resource
 182  * @pf: board private structure
 183  * @pile: the pile of resource to search
 184  * @needed: the number of items needed
 185  * @id: an owner id to stick on the items assigned
 186  *
 187  * Returns the base item index of the lump, or negative for error
 188  *
 189  * The search_hint trick and lack of advanced fit-finding only work
 190  * because we're highly likely to have all the same size lump requests.
 191  * Linear search time and any fragmentation should be minimal.
 192  **/
 193 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 194                          u16 needed, u16 id)
 195 {
 196         int ret = -ENOMEM;
 197         int i, j;
 198
 199         if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
 200                 dev_info(&pf->pdev->dev,
 201                          "param err: pile=%p needed=%d id=0x%04x\n",
 202                          pile, needed, id);
 203                 return -EINVAL;
 204         }
 205
 206         /* start the linear search with an imperfect hint */
 207         i = pile->search_hint;
 208         while (i < pile->num_entries) {
 209                 /* skip already allocated entries */
 210                 if (pile->list[i] & I40E_PILE_VALID_BIT) {
 211                         i++;
 212                         continue;
 213                 }
 214
 215                 /* do we have enough in this lump? */
 216                 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
 217                         if (pile->list[i+j] & I40E_PILE_VALID_BIT)
 218                                 break;
 219                 }
 220
 221                 if (j == needed) {
 222                         /* there was enough, so assign it to the requestor */
 223                         for (j = 0; j < needed; j++)
 224                                 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 225                         ret = i;
 226                         pile->search_hint = i + j;
 227                         break;
 228                 }
 229
 230                 /* not enough, so skip over it and continue looking */
 231                 i += j;
 232         }
 233
 234         return ret;
 235 }
 236
 237 /**
 238  * i40e_put_lump - return a lump of generic resource
 239  * @pile: the pile of resource to search
 240  * @index: the base item index
 241  * @id: the owner id of the items assigned
 242  *
 243  * Returns the count of items in the lump
 244  **/
 245 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
 246 {
 247         int valid_id = (id | I40E_PILE_VALID_BIT);
 248         int count = 0;
 249         int i;
 250
 251         if (!pile || index >= pile->num_entries)
 252                 return -EINVAL;
 253
 254         for (i = index;
 255              i < pile->num_entries && pile->list[i] == valid_id;
 256              i++) {
 257                 pile->list[i] = 0;
 258                 count++;
 259         }
 260
 261         if (count && index < pile->search_hint)
 262                 pile->search_hint = index;
 263
 264         return count;
 265 }
 266
 267 /**
 268  * i40e_find_vsi_from_id - searches for the vsi with the given id
 269  * @pf - the pf structure to search for the vsi
 270  * @id - id of the vsi it is searching for
 271  **/
 272 struct i40e_vsi *i40e_find_vsi_from_id(struct i40e_pf *pf, u16 id)
 273 {
 274         int i;
 275
 276         for (i = 0; i < pf->num_alloc_vsi; i++)
 277                 if (pf->vsi[i] && (pf->vsi[i]->id == id))
 278                         return pf->vsi[i];
 279
 280         return NULL;
 281 }
 282
 283 /**
 284  * i40e_service_event_schedule - Schedule the service task to wake up
 285  * @pf: board private structure
 286  *
 287  * If not already scheduled, this puts the task into the work queue
 288  **/
 289 void i40e_service_event_schedule(struct i40e_pf *pf)
 290 {
 291         if (!test_bit(__I40E_DOWN, &pf->state) &&
 292             !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state) &&
 293             !test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
 294                 queue_work(i40e_wq, &pf->service_task);
 295 }
 296
 297 /**
 298  * i40e_tx_timeout - Respond to a Tx Hang
 299  * @netdev: network interface device structure
 300  *
 301  * If any port has noticed a Tx timeout, it is likely that the whole
 302  * device is munged, not just the one netdev port, so go for the full
 303  * reset.
 304  **/
 305 #ifdef I40E_FCOE
 306 void i40e_tx_timeout(struct net_device *netdev)
 307 #else
 308 static void i40e_tx_timeout(struct net_device *netdev)
 309 #endif
 310 {
 311         struct i40e_netdev_priv *np = netdev_priv(netdev);
 312         struct i40e_vsi *vsi = np->vsi;
 313         struct i40e_pf *pf = vsi->back;
 314         struct i40e_ring *tx_ring = NULL;
 315         unsigned int i, hung_queue = 0;
 316         u32 head, val;
 317
 318         pf->tx_timeout_count++;
 319
 320         /* find the stopped queue the same way the stack does */
 321         for (i = 0; i < netdev->num_tx_queues; i++) {
 322                 struct netdev_queue *q;
 323                 unsigned long trans_start;
 324
 325                 q = netdev_get_tx_queue(netdev, i);
 326                 trans_start = q->trans_start;
 327                 if (netif_xmit_stopped(q) &&
 328                     time_after(jiffies,
 329                                (trans_start + netdev->watchdog_timeo))) {
 330                         hung_queue = i;
 331                         break;
 332                 }
 333         }
 334
 335         if (i == netdev->num_tx_queues) {
 336                 netdev_info(netdev, "tx_timeout: no netdev hung queue found\n");
 337         } else {
 338                 /* now that we have an index, find the tx_ring struct */
 339                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 340                         if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
 341                                 if (hung_queue ==
 342                                     vsi->tx_rings[i]->queue_index) {
 343                                         tx_ring = vsi->tx_rings[i];
 344                                         break;
 345                                 }
 346                         }
 347                 }
 348         }
 349
 350         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 351                 pf->tx_timeout_recovery_level = 1;  /* reset after some time */
 352         else if (time_before(jiffies,
 353                       (pf->tx_timeout_last_recovery + netdev->watchdog_timeo)))
 354                 return;   /* don't do any new action before the next timeout */
 355
 356         if (tx_ring) {
 357                 head = i40e_get_head(tx_ring);
 358                 /* Read interrupt register */
 359                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
 360                         val = rd32(&pf->hw,
 361                              I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
 362                                                 tx_ring->vsi->base_vector - 1));
 363                 else
 364                         val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
 365
 366                 netdev_info(netdev, "tx_timeout: VSI_seid: %d, Q %d, NTC: 0x%x, HWB: 0x%x, NTU: 0x%x, TAIL: 0x%x, INT: 0x%x\n",
 367                             vsi->seid, hung_queue, tx_ring->next_to_clean,
 368                             head, tx_ring->next_to_use,
 369                             readl(tx_ring->tail), val);
 370         }
 371
 372         pf->tx_timeout_last_recovery = jiffies;
 373         netdev_info(netdev, "tx_timeout recovery level %d, hung_queue %d\n",
 374                     pf->tx_timeout_recovery_level, hung_queue);
 375
 376         switch (pf->tx_timeout_recovery_level) {
 377         case 1:
 378                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
 379                 break;
 380         case 2:
 381                 set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
 382                 break;
 383         case 3:
 384                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
 385                 break;
 386         default:
 387                 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
 388                 break;
 389         }
 390
 391         i40e_service_event_schedule(pf);
 392         pf->tx_timeout_recovery_level++;
 393 }
 394
 395 /**
 396  * i40e_get_vsi_stats_struct - Get System Network Statistics
 397  * @vsi: the VSI we care about
 398  *
 399  * Returns the address of the device statistics structure.
 400  * The statistics are actually updated from the service task.
 401  **/
 402 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 403 {
 404         return &vsi->net_stats;
 405 }
 406
 407 /**
 408  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 409  * @netdev: network interface device structure
 410  *
 411  * Returns the address of the device statistics structure.
 412  * The statistics are actually updated from the service task.
 413  **/
 414 #ifdef I40E_FCOE
 415 struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 416                                              struct net_device *netdev,
 417                                              struct rtnl_link_stats64 *stats)
 418 #else
 419 static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 420                                              struct net_device *netdev,
 421                                              struct rtnl_link_stats64 *stats)
 422 #endif
 423 {
 424         struct i40e_netdev_priv *np = netdev_priv(netdev);
 425         struct i40e_ring *tx_ring, *rx_ring;
 426         struct i40e_vsi *vsi = np->vsi;
 427         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 428         int i;
 429
 430         if (test_bit(__I40E_DOWN, &vsi->state))
 431                 return stats;
 432
 433         if (!vsi->tx_rings)
 434                 return stats;
 435
 436         rcu_read_lock();
 437         for (i = 0; i < vsi->num_queue_pairs; i++) {
 438                 u64 bytes, packets;
 439                 unsigned int start;
 440
 441                 tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
 442                 if (!tx_ring)
 443                         continue;
 444
 445                 do {
 446                         start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
 447                         packets = tx_ring->stats.packets;
 448                         bytes   = tx_ring->stats.bytes;
 449                 } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
 450
 451                 stats->tx_packets += packets;
 452                 stats->tx_bytes   += bytes;
 453                 rx_ring = &tx_ring[1];
 454
 455                 do {
 456                         start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
 457                         packets = rx_ring->stats.packets;
 458                         bytes   = rx_ring->stats.bytes;
 459                 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
 460
 461                 stats->rx_packets += packets;
 462                 stats->rx_bytes   += bytes;
 463         }
 464         rcu_read_unlock();
 465
 466         /* following stats updated by i40e_watchdog_subtask() */
 467         stats->multicast        = vsi_stats->multicast;
 468         stats->tx_errors        = vsi_stats->tx_errors;
 469         stats->tx_dropped       = vsi_stats->tx_dropped;
 470         stats->rx_errors        = vsi_stats->rx_errors;
 471         stats->rx_dropped       = vsi_stats->rx_dropped;
 472         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 473         stats->rx_length_errors = vsi_stats->rx_length_errors;
 474
 475         return stats;
 476 }
 477
 478 /**
 479  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 480  * @vsi: the VSI to have its stats reset
 481  **/
 482 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 483 {
 484         struct rtnl_link_stats64 *ns;
 485         int i;
 486
 487         if (!vsi)
 488                 return;
 489
 490         ns = i40e_get_vsi_stats_struct(vsi);
 491         memset(ns, 0, sizeof(*ns));
 492         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 493         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 494         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 495         if (vsi->rx_rings && vsi->rx_rings[0]) {
 496                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 497                         memset(&vsi->rx_rings[i]->stats, 0,
 498                                sizeof(vsi->rx_rings[i]->stats));
 499                         memset(&vsi->rx_rings[i]->rx_stats, 0,
 500                                sizeof(vsi->rx_rings[i]->rx_stats));
 501                         memset(&vsi->tx_rings[i]->stats, 0,
 502                                sizeof(vsi->tx_rings[i]->stats));
 503                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 504                                sizeof(vsi->tx_rings[i]->tx_stats));
 505                 }
 506         }
 507         vsi->stat_offsets_loaded = false;
 508 }
 509
 510 /**
 511  * i40e_pf_reset_stats - Reset all of the stats for the given PF
 512  * @pf: the PF to be reset
 513  **/
 514 void i40e_pf_reset_stats(struct i40e_pf *pf)
 515 {
 516         int i;
 517
 518         memset(&pf->stats, 0, sizeof(pf->stats));
 519         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 520         pf->stat_offsets_loaded = false;
 521
 522         for (i = 0; i < I40E_MAX_VEB; i++) {
 523                 if (pf->veb[i]) {
 524                         memset(&pf->veb[i]->stats, 0,
 525                                sizeof(pf->veb[i]->stats));
 526                         memset(&pf->veb[i]->stats_offsets, 0,
 527                                sizeof(pf->veb[i]->stats_offsets));
 528                         pf->veb[i]->stat_offsets_loaded = false;
 529                 }
 530         }
 531 }
 532
 533 /**
 534  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 535  * @hw: ptr to the hardware info
 536  * @hireg: the high 32 bit reg to read
 537  * @loreg: the low 32 bit reg to read
 538  * @offset_loaded: has the initial offset been loaded yet
 539  * @offset: ptr to current offset value
 540  * @stat: ptr to the stat
 541  *
 542  * Since the device stats are not reset at PFReset, they likely will not
 543  * be zeroed when the driver starts.  We'll save the first values read
 544  * and use them as offsets to be subtracted from the raw values in order
 545  * to report stats that count from zero.  In the process, we also manage
 546  * the potential roll-over.
 547  **/
 548 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 549                                bool offset_loaded, u64 *offset, u64 *stat)
 550 {
 551         u64 new_data;
 552
 553         if (hw->device_id == I40E_DEV_ID_QEMU) {
 554                 new_data = rd32(hw, loreg);
 555                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 556         } else {
 557                 new_data = rd64(hw, loreg);
 558         }
 559         if (!offset_loaded)
 560                 *offset = new_data;
 561         if (likely(new_data >= *offset))
 562                 *stat = new_data - *offset;
 563         else
 564                 *stat = (new_data + BIT_ULL(48)) - *offset;
 565         *stat &= 0xFFFFFFFFFFFFULL;
 566 }
 567
 568 /**
 569  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 570  * @hw: ptr to the hardware info
 571  * @reg: the hw reg to read
 572  * @offset_loaded: has the initial offset been loaded yet
 573  * @offset: ptr to current offset value
 574  * @stat: ptr to the stat
 575  **/
 576 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 577                                bool offset_loaded, u64 *offset, u64 *stat)
 578 {
 579         u32 new_data;
 580
 581         new_data = rd32(hw, reg);
 582         if (!offset_loaded)
 583                 *offset = new_data;
 584         if (likely(new_data >= *offset))
 585                 *stat = (u32)(new_data - *offset);
 586         else
 587                 *stat = (u32)((new_data + BIT_ULL(32)) - *offset);
 588 }
 589
 590 /**
 591  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 592  * @vsi: the VSI to be updated
 593  **/
 594 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 595 {
 596         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 597         struct i40e_pf *pf = vsi->back;
 598         struct i40e_hw *hw = &pf->hw;
 599         struct i40e_eth_stats *oes;
 600         struct i40e_eth_stats *es;     /* device's eth stats */
 601
 602         es = &vsi->eth_stats;
 603         oes = &vsi->eth_stats_offsets;
 604
 605         /* Gather up the stats that the hw collects */
 606         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 607                            vsi->stat_offsets_loaded,
 608                            &oes->tx_errors, &es->tx_errors);
 609         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 610                            vsi->stat_offsets_loaded,
 611                            &oes->rx_discards, &es->rx_discards);
 612         i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
 613                            vsi->stat_offsets_loaded,
 614                            &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
 615         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 616                            vsi->stat_offsets_loaded,
 617                            &oes->tx_errors, &es->tx_errors);
 618
 619         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 620                            I40E_GLV_GORCL(stat_idx),
 621                            vsi->stat_offsets_loaded,
 622                            &oes->rx_bytes, &es->rx_bytes);
 623         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 624                            I40E_GLV_UPRCL(stat_idx),
 625                            vsi->stat_offsets_loaded,
 626                            &oes->rx_unicast, &es->rx_unicast);
 627         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 628                            I40E_GLV_MPRCL(stat_idx),
 629                            vsi->stat_offsets_loaded,
 630                            &oes->rx_multicast, &es->rx_multicast);
 631         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 632                            I40E_GLV_BPRCL(stat_idx),
 633                            vsi->stat_offsets_loaded,
 634                            &oes->rx_broadcast, &es->rx_broadcast);
 635
 636         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 637                            I40E_GLV_GOTCL(stat_idx),
 638                            vsi->stat_offsets_loaded,
 639                            &oes->tx_bytes, &es->tx_bytes);
 640         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 641                            I40E_GLV_UPTCL(stat_idx),
 642                            vsi->stat_offsets_loaded,
 643                            &oes->tx_unicast, &es->tx_unicast);
 644         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 645                            I40E_GLV_MPTCL(stat_idx),
 646                            vsi->stat_offsets_loaded,
 647                            &oes->tx_multicast, &es->tx_multicast);
 648         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 649                            I40E_GLV_BPTCL(stat_idx),
 650                            vsi->stat_offsets_loaded,
 651                            &oes->tx_broadcast, &es->tx_broadcast);
 652         vsi->stat_offsets_loaded = true;
 653 }
 654
 655 /**
 656  * i40e_update_veb_stats - Update Switch component statistics
 657  * @veb: the VEB being updated
 658  **/
 659 static void i40e_update_veb_stats(struct i40e_veb *veb)
 660 {
 661         struct i40e_pf *pf = veb->pf;
 662         struct i40e_hw *hw = &pf->hw;
 663         struct i40e_eth_stats *oes;
 664         struct i40e_eth_stats *es;     /* device's eth stats */
 665         struct i40e_veb_tc_stats *veb_oes;
 666         struct i40e_veb_tc_stats *veb_es;
 667         int i, idx = 0;
 668
 669         idx = veb->stats_idx;
 670         es = &veb->stats;
 671         oes = &veb->stats_offsets;
 672         veb_es = &veb->tc_stats;
 673         veb_oes = &veb->tc_stats_offsets;
 674
 675         /* Gather up the stats that the hw collects */
 676         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 677                            veb->stat_offsets_loaded,
 678                            &oes->tx_discards, &es->tx_discards);
 679         if (hw->revision_id > 0)
 680                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 681                                    veb->stat_offsets_loaded,
 682                                    &oes->rx_unknown_protocol,
 683                                    &es->rx_unknown_protocol);
 684         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 685                            veb->stat_offsets_loaded,
 686                            &oes->rx_bytes, &es->rx_bytes);
 687         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 688                            veb->stat_offsets_loaded,
 689                            &oes->rx_unicast, &es->rx_unicast);
 690         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 691                            veb->stat_offsets_loaded,
 692                            &oes->rx_multicast, &es->rx_multicast);
 693         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 694                            veb->stat_offsets_loaded,
 695                            &oes->rx_broadcast, &es->rx_broadcast);
 696
 697         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 698                            veb->stat_offsets_loaded,
 699                            &oes->tx_bytes, &es->tx_bytes);
 700         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 701                            veb->stat_offsets_loaded,
 702                            &oes->tx_unicast, &es->tx_unicast);
 703         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 704                            veb->stat_offsets_loaded,
 705                            &oes->tx_multicast, &es->tx_multicast);
 706         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 707                            veb->stat_offsets_loaded,
 708                            &oes->tx_broadcast, &es->tx_broadcast);
 709         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
 710                 i40e_stat_update48(hw, I40E_GLVEBTC_RPCH(i, idx),
 711                                    I40E_GLVEBTC_RPCL(i, idx),
 712                                    veb->stat_offsets_loaded,
 713                                    &veb_oes->tc_rx_packets[i],
 714                                    &veb_es->tc_rx_packets[i]);
 715                 i40e_stat_update48(hw, I40E_GLVEBTC_RBCH(i, idx),
 716                                    I40E_GLVEBTC_RBCL(i, idx),
 717                                    veb->stat_offsets_loaded,
 718                                    &veb_oes->tc_rx_bytes[i],
 719                                    &veb_es->tc_rx_bytes[i]);
 720                 i40e_stat_update48(hw, I40E_GLVEBTC_TPCH(i, idx),
 721                                    I40E_GLVEBTC_TPCL(i, idx),
 722                                    veb->stat_offsets_loaded,
 723                                    &veb_oes->tc_tx_packets[i],
 724                                    &veb_es->tc_tx_packets[i]);
 725                 i40e_stat_update48(hw, I40E_GLVEBTC_TBCH(i, idx),
 726                                    I40E_GLVEBTC_TBCL(i, idx),
 727                                    veb->stat_offsets_loaded,
 728                                    &veb_oes->tc_tx_bytes[i],
 729                                    &veb_es->tc_tx_bytes[i]);
 730         }
 731         veb->stat_offsets_loaded = true;
 732 }
 733
 734 #ifdef I40E_FCOE
 735 /**
 736  * i40e_update_fcoe_stats - Update FCoE-specific ethernet statistics counters.
 737  * @vsi: the VSI that is capable of doing FCoE
 738  **/
 739 static void i40e_update_fcoe_stats(struct i40e_vsi *vsi)
 740 {
 741         struct i40e_pf *pf = vsi->back;
 742         struct i40e_hw *hw = &pf->hw;
 743         struct i40e_fcoe_stats *ofs;
 744         struct i40e_fcoe_stats *fs;     /* device's eth stats */
 745         int idx;
 746
 747         if (vsi->type != I40E_VSI_FCOE)
 748                 return;
 749
 750         idx = hw->pf_id + I40E_FCOE_PF_STAT_OFFSET;
 751         fs = &vsi->fcoe_stats;
 752         ofs = &vsi->fcoe_stats_offsets;
 753
 754         i40e_stat_update32(hw, I40E_GL_FCOEPRC(idx),
 755                            vsi->fcoe_stat_offsets_loaded,
 756                            &ofs->rx_fcoe_packets, &fs->rx_fcoe_packets);
 757         i40e_stat_update48(hw, I40E_GL_FCOEDWRCH(idx), I40E_GL_FCOEDWRCL(idx),
 758                            vsi->fcoe_stat_offsets_loaded,
 759                            &ofs->rx_fcoe_dwords, &fs->rx_fcoe_dwords);
 760         i40e_stat_update32(hw, I40E_GL_FCOERPDC(idx),
 761                            vsi->fcoe_stat_offsets_loaded,
 762                            &ofs->rx_fcoe_dropped, &fs->rx_fcoe_dropped);
 763         i40e_stat_update32(hw, I40E_GL_FCOEPTC(idx),
 764                            vsi->fcoe_stat_offsets_loaded,
 765                            &ofs->tx_fcoe_packets, &fs->tx_fcoe_packets);
 766         i40e_stat_update48(hw, I40E_GL_FCOEDWTCH(idx), I40E_GL_FCOEDWTCL(idx),
 767                            vsi->fcoe_stat_offsets_loaded,
 768                            &ofs->tx_fcoe_dwords, &fs->tx_fcoe_dwords);
 769         i40e_stat_update32(hw, I40E_GL_FCOECRC(idx),
 770                            vsi->fcoe_stat_offsets_loaded,
 771                            &ofs->fcoe_bad_fccrc, &fs->fcoe_bad_fccrc);
 772         i40e_stat_update32(hw, I40E_GL_FCOELAST(idx),
 773                            vsi->fcoe_stat_offsets_loaded,
 774                            &ofs->fcoe_last_error, &fs->fcoe_last_error);
 775         i40e_stat_update32(hw, I40E_GL_FCOEDDPC(idx),
 776                            vsi->fcoe_stat_offsets_loaded,
 777                            &ofs->fcoe_ddp_count, &fs->fcoe_ddp_count);
 778
 779         vsi->fcoe_stat_offsets_loaded = true;
 780 }
 781
 782 #endif
 783 /**
 784  * i40e_update_vsi_stats - Update the vsi statistics counters.
 785  * @vsi: the VSI to be updated
 786  *
 787  * There are a few instances where we store the same stat in a
 788  * couple of different structs.  This is partly because we have
 789  * the netdev stats that need to be filled out, which is slightly
 790  * different from the "eth_stats" defined by the chip and used in
 791  * VF communications.  We sort it out here.
 792  **/
 793 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 794 {
 795         struct i40e_pf *pf = vsi->back;
 796         struct rtnl_link_stats64 *ons;
 797         struct rtnl_link_stats64 *ns;   /* netdev stats */
 798         struct i40e_eth_stats *oes;
 799         struct i40e_eth_stats *es;     /* device's eth stats */
 800         u32 tx_restart, tx_busy;
 801         u64 tx_lost_interrupt;
 802         struct i40e_ring *p;
 803         u32 rx_page, rx_buf;
 804         u64 bytes, packets;
 805         unsigned int start;
 806         u64 tx_linearize;
 807         u64 tx_force_wb;
 808         u64 rx_p, rx_b;
 809         u64 tx_p, tx_b;
 810         u16 q;
 811
 812         if (test_bit(__I40E_DOWN, &vsi->state) ||
 813             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 814                 return;
 815
 816         ns = i40e_get_vsi_stats_struct(vsi);
 817         ons = &vsi->net_stats_offsets;
 818         es = &vsi->eth_stats;
 819         oes = &vsi->eth_stats_offsets;
 820
 821         /* Gather up the netdev and vsi stats that the driver collects
 822          * on the fly during packet processing
 823          */
 824         rx_b = rx_p = 0;
 825         tx_b = tx_p = 0;
 826         tx_restart = tx_busy = tx_linearize = tx_force_wb = 0;
 827         tx_lost_interrupt = 0;
 828         rx_page = 0;
 829         rx_buf = 0;
 830         rcu_read_lock();
 831         for (q = 0; q < vsi->num_queue_pairs; q++) {
 832                 /* locate Tx ring */
 833                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 834
 835                 do {
 836                         start = u64_stats_fetch_begin_irq(&p->syncp);
 837                         packets = p->stats.packets;
 838                         bytes = p->stats.bytes;
 839                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 840                 tx_b += bytes;
 841                 tx_p += packets;
 842                 tx_restart += p->tx_stats.restart_queue;
 843                 tx_busy += p->tx_stats.tx_busy;
 844                 tx_linearize += p->tx_stats.tx_linearize;
 845                 tx_force_wb += p->tx_stats.tx_force_wb;
 846                 tx_lost_interrupt += p->tx_stats.tx_lost_interrupt;
 847
 848                 /* Rx queue is part of the same block as Tx queue */
 849                 p = &p[1];
 850                 do {
 851                         start = u64_stats_fetch_begin_irq(&p->syncp);
 852                         packets = p->stats.packets;
 853                         bytes = p->stats.bytes;
 854                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 855                 rx_b += bytes;
 856                 rx_p += packets;
 857                 rx_buf += p->rx_stats.alloc_buff_failed;
 858                 rx_page += p->rx_stats.alloc_page_failed;
 859         }
 860         rcu_read_unlock();
 861         vsi->tx_restart = tx_restart;
 862         vsi->tx_busy = tx_busy;
 863         vsi->tx_linearize = tx_linearize;
 864         vsi->tx_force_wb = tx_force_wb;
 865         vsi->tx_lost_interrupt = tx_lost_interrupt;
 866         vsi->rx_page_failed = rx_page;
 867         vsi->rx_buf_failed = rx_buf;
 868
 869         ns->rx_packets = rx_p;
 870         ns->rx_bytes = rx_b;
 871         ns->tx_packets = tx_p;
 872         ns->tx_bytes = tx_b;
 873
 874         /* update netdev stats from eth stats */
 875         i40e_update_eth_stats(vsi);
 876         ons->tx_errors = oes->tx_errors;
 877         ns->tx_errors = es->tx_errors;
 878         ons->multicast = oes->rx_multicast;
 879         ns->multicast = es->rx_multicast;
 880         ons->rx_dropped = oes->rx_discards;
 881         ns->rx_dropped = es->rx_discards;
 882         ons->tx_dropped = oes->tx_discards;
 883         ns->tx_dropped = es->tx_discards;
 884
 885         /* pull in a couple PF stats if this is the main vsi */
 886         if (vsi == pf->vsi[pf->lan_vsi]) {
 887                 ns->rx_crc_errors = pf->stats.crc_errors;
 888                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 889                 ns->rx_length_errors = pf->stats.rx_length_errors;
 890         }
 891 }
 892
 893 /**
 894  * i40e_update_pf_stats - Update the PF statistics counters.
 895  * @pf: the PF to be updated
 896  **/
 897 static void i40e_update_pf_stats(struct i40e_pf *pf)
 898 {
 899         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 900         struct i40e_hw_port_stats *nsd = &pf->stats;
 901         struct i40e_hw *hw = &pf->hw;
 902         u32 val;
 903         int i;
 904
 905         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 906                            I40E_GLPRT_GORCL(hw->port),
 907                            pf->stat_offsets_loaded,
 908                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 909         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 910                            I40E_GLPRT_GOTCL(hw->port),
 911                            pf->stat_offsets_loaded,
 912                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 913         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 914                            pf->stat_offsets_loaded,
 915                            &osd->eth.rx_discards,
 916                            &nsd->eth.rx_discards);
 917         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 918                            I40E_GLPRT_UPRCL(hw->port),
 919                            pf->stat_offsets_loaded,
 920                            &osd->eth.rx_unicast,
 921                            &nsd->eth.rx_unicast);
 922         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 923                            I40E_GLPRT_MPRCL(hw->port),
 924                            pf->stat_offsets_loaded,
 925                            &osd->eth.rx_multicast,
 926                            &nsd->eth.rx_multicast);
 927         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
 928                            I40E_GLPRT_BPRCL(hw->port),
 929                            pf->stat_offsets_loaded,
 930                            &osd->eth.rx_broadcast,
 931                            &nsd->eth.rx_broadcast);
 932         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
 933                            I40E_GLPRT_UPTCL(hw->port),
 934                            pf->stat_offsets_loaded,
 935                            &osd->eth.tx_unicast,
 936                            &nsd->eth.tx_unicast);
 937         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
 938                            I40E_GLPRT_MPTCL(hw->port),
 939                            pf->stat_offsets_loaded,
 940                            &osd->eth.tx_multicast,
 941                            &nsd->eth.tx_multicast);
 942         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
 943                            I40E_GLPRT_BPTCL(hw->port),
 944                            pf->stat_offsets_loaded,
 945                            &osd->eth.tx_broadcast,
 946                            &nsd->eth.tx_broadcast);
 947
 948         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
 949                            pf->stat_offsets_loaded,
 950                            &osd->tx_dropped_link_down,
 951                            &nsd->tx_dropped_link_down);
 952
 953         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
 954                            pf->stat_offsets_loaded,
 955                            &osd->crc_errors, &nsd->crc_errors);
 956
 957         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
 958                            pf->stat_offsets_loaded,
 959                            &osd->illegal_bytes, &nsd->illegal_bytes);
 960
 961         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
 962                            pf->stat_offsets_loaded,
 963                            &osd->mac_local_faults,
 964                            &nsd->mac_local_faults);
 965         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
 966                            pf->stat_offsets_loaded,
 967                            &osd->mac_remote_faults,
 968                            &nsd->mac_remote_faults);
 969
 970         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
 971                            pf->stat_offsets_loaded,
 972                            &osd->rx_length_errors,
 973                            &nsd->rx_length_errors);
 974
 975         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
 976                            pf->stat_offsets_loaded,
 977                            &osd->link_xon_rx, &nsd->link_xon_rx);
 978         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
 979                            pf->stat_offsets_loaded,
 980                            &osd->link_xon_tx, &nsd->link_xon_tx);
 981         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
 982                            pf->stat_offsets_loaded,
 983                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
 984         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
 985                            pf->stat_offsets_loaded,
 986                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
 987
 988         for (i = 0; i < 8; i++) {
 989                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 990                                    pf->stat_offsets_loaded,
 991                                    &osd->priority_xoff_rx[i],
 992                                    &nsd->priority_xoff_rx[i]);
 993                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
 994                                    pf->stat_offsets_loaded,
 995                                    &osd->priority_xon_rx[i],
 996                                    &nsd->priority_xon_rx[i]);
 997                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
 998                                    pf->stat_offsets_loaded,
 999                                    &osd->priority_xon_tx[i],
1000                                    &nsd->priority_xon_tx[i]);
1001                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
1002                                    pf->stat_offsets_loaded,
1003                                    &osd->priority_xoff_tx[i],
1004                                    &nsd->priority_xoff_tx[i]);
1005                 i40e_stat_update32(hw,
1006                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
1007                                    pf->stat_offsets_loaded,
1008                                    &osd->priority_xon_2_xoff[i],
1009                                    &nsd->priority_xon_2_xoff[i]);
1010         }
1011
1012         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
1013                            I40E_GLPRT_PRC64L(hw->port),
1014                            pf->stat_offsets_loaded,
1015                            &osd->rx_size_64, &nsd->rx_size_64);
1016         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
1017                            I40E_GLPRT_PRC127L(hw->port),
1018                            pf->stat_offsets_loaded,
1019                            &osd->rx_size_127, &nsd->rx_size_127);
1020         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
1021                            I40E_GLPRT_PRC255L(hw->port),
1022                            pf->stat_offsets_loaded,
1023                            &osd->rx_size_255, &nsd->rx_size_255);
1024         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
1025                            I40E_GLPRT_PRC511L(hw->port),
1026                            pf->stat_offsets_loaded,
1027                            &osd->rx_size_511, &nsd->rx_size_511);
1028         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
1029                            I40E_GLPRT_PRC1023L(hw->port),
1030                            pf->stat_offsets_loaded,
1031                            &osd->rx_size_1023, &nsd->rx_size_1023);
1032         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
1033                            I40E_GLPRT_PRC1522L(hw->port),
1034                            pf->stat_offsets_loaded,
1035                            &osd->rx_size_1522, &nsd->rx_size_1522);
1036         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
1037                            I40E_GLPRT_PRC9522L(hw->port),
1038                            pf->stat_offsets_loaded,
1039                            &osd->rx_size_big, &nsd->rx_size_big);
1040
1041         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
1042                            I40E_GLPRT_PTC64L(hw->port),
1043                            pf->stat_offsets_loaded,
1044                            &osd->tx_size_64, &nsd->tx_size_64);
1045         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
1046                            I40E_GLPRT_PTC127L(hw->port),
1047                            pf->stat_offsets_loaded,
1048                            &osd->tx_size_127, &nsd->tx_size_127);
1049         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
1050                            I40E_GLPRT_PTC255L(hw->port),
1051                            pf->stat_offsets_loaded,
1052                            &osd->tx_size_255, &nsd->tx_size_255);
1053         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
1054                            I40E_GLPRT_PTC511L(hw->port),
1055                            pf->stat_offsets_loaded,
1056                            &osd->tx_size_511, &nsd->tx_size_511);
1057         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1058                            I40E_GLPRT_PTC1023L(hw->port),
1059                            pf->stat_offsets_loaded,
1060                            &osd->tx_size_1023, &nsd->tx_size_1023);
1061         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1062                            I40E_GLPRT_PTC1522L(hw->port),
1063                            pf->stat_offsets_loaded,
1064                            &osd->tx_size_1522, &nsd->tx_size_1522);
1065         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1066                            I40E_GLPRT_PTC9522L(hw->port),
1067                            pf->stat_offsets_loaded,
1068                            &osd->tx_size_big, &nsd->tx_size_big);
1069
1070         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1071                            pf->stat_offsets_loaded,
1072                            &osd->rx_undersize, &nsd->rx_undersize);
1073         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1074                            pf->stat_offsets_loaded,
1075                            &osd->rx_fragments, &nsd->rx_fragments);
1076         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1077                            pf->stat_offsets_loaded,
1078                            &osd->rx_oversize, &nsd->rx_oversize);
1079         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1080                            pf->stat_offsets_loaded,
1081                            &osd->rx_jabber, &nsd->rx_jabber);
1082
1083         /* FDIR stats */
1084         i40e_stat_update32(hw,
1085                            I40E_GLQF_PCNT(I40E_FD_ATR_STAT_IDX(pf->hw.pf_id)),
1086                            pf->stat_offsets_loaded,
1087                            &osd->fd_atr_match, &nsd->fd_atr_match);
1088         i40e_stat_update32(hw,
1089                            I40E_GLQF_PCNT(I40E_FD_SB_STAT_IDX(pf->hw.pf_id)),
1090                            pf->stat_offsets_loaded,
1091                            &osd->fd_sb_match, &nsd->fd_sb_match);
1092         i40e_stat_update32(hw,
1093                       I40E_GLQF_PCNT(I40E_FD_ATR_TUNNEL_STAT_IDX(pf->hw.pf_id)),
1094                       pf->stat_offsets_loaded,
1095                       &osd->fd_atr_tunnel_match, &nsd->fd_atr_tunnel_match);
1096
1097         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1098         nsd->tx_lpi_status =
1099                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1100                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1101         nsd->rx_lpi_status =
1102                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1103                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1104         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1105                            pf->stat_offsets_loaded,
1106                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1107         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1108                            pf->stat_offsets_loaded,
1109                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1110
1111         if (pf->flags & I40E_FLAG_FD_SB_ENABLED &&
1112             !(pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED))
1113                 nsd->fd_sb_status = true;
1114         else
1115                 nsd->fd_sb_status = false;
1116
1117         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED &&
1118             !(pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
1119                 nsd->fd_atr_status = true;
1120         else
1121                 nsd->fd_atr_status = false;
1122
1123         pf->stat_offsets_loaded = true;
1124 }
1125
1126 /**
1127  * i40e_update_stats - Update the various statistics counters.
1128  * @vsi: the VSI to be updated
1129  *
1130  * Update the various stats for this VSI and its related entities.
1131  **/
1132 void i40e_update_stats(struct i40e_vsi *vsi)
1133 {
1134         struct i40e_pf *pf = vsi->back;
1135
1136         if (vsi == pf->vsi[pf->lan_vsi])
1137                 i40e_update_pf_stats(pf);
1138
1139         i40e_update_vsi_stats(vsi);
1140 #ifdef I40E_FCOE
1141         i40e_update_fcoe_stats(vsi);
1142 #endif
1143 }
1144
1145 /**
1146  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1147  * @vsi: the VSI to be searched
1148  * @macaddr: the MAC address
1149  * @vlan: the vlan
1150  * @is_vf: make sure its a VF filter, else doesn't matter
1151  * @is_netdev: make sure its a netdev filter, else doesn't matter
1152  *
1153  * Returns ptr to the filter object or NULL
1154  **/
1155 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1156                                                 u8 *macaddr, s16 vlan,
1157                                                 bool is_vf, bool is_netdev)
1158 {
1159         struct i40e_mac_filter *f;
1160
1161         if (!vsi || !macaddr)
1162                 return NULL;
1163
1164         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1165                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1166                     (vlan == f->vlan)    &&
1167                     (!is_vf || f->is_vf) &&
1168                     (!is_netdev || f->is_netdev))
1169                         return f;
1170         }
1171         return NULL;
1172 }
1173
1174 /**
1175  * i40e_find_mac - Find a mac addr in the macvlan filters list
1176  * @vsi: the VSI to be searched
1177  * @macaddr: the MAC address we are searching for
1178  * @is_vf: make sure its a VF filter, else doesn't matter
1179  * @is_netdev: make sure its a netdev filter, else doesn't matter
1180  *
1181  * Returns the first filter with the provided MAC address or NULL if
1182  * MAC address was not found
1183  **/
1184 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1185                                       bool is_vf, bool is_netdev)
1186 {
1187         struct i40e_mac_filter *f;
1188
1189         if (!vsi || !macaddr)
1190                 return NULL;
1191
1192         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1193                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1194                     (!is_vf || f->is_vf) &&
1195                     (!is_netdev || f->is_netdev))
1196                         return f;
1197         }
1198         return NULL;
1199 }
1200
1201 /**
1202  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1203  * @vsi: the VSI to be searched
1204  *
1205  * Returns true if VSI is in vlan mode or false otherwise
1206  **/
1207 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1208 {
1209         struct i40e_mac_filter *f;
1210
1211         /* Only -1 for all the filters denotes not in vlan mode
1212          * so we have to go through all the list in order to make sure
1213          */
1214         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1215                 if (f->vlan >= 0 || vsi->info.pvid)
1216                         return true;
1217         }
1218
1219         return false;
1220 }
1221
1222 /**
1223  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1224  * @vsi: the VSI to be searched
1225  * @macaddr: the mac address to be filtered
1226  * @is_vf: true if it is a VF
1227  * @is_netdev: true if it is a netdev
1228  *
1229  * Goes through all the macvlan filters and adds a
1230  * macvlan filter for each unique vlan that already exists
1231  *
1232  * Returns first filter found on success, else NULL
1233  **/
1234 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1235                                              bool is_vf, bool is_netdev)
1236 {
1237         struct i40e_mac_filter *f;
1238
1239         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1240                 if (vsi->info.pvid)
1241                         f->vlan = le16_to_cpu(vsi->info.pvid);
1242                 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1243                                       is_vf, is_netdev)) {
1244                         if (!i40e_add_filter(vsi, macaddr, f->vlan,
1245                                              is_vf, is_netdev))
1246                                 return NULL;
1247                 }
1248         }
1249
1250         return list_first_entry_or_null(&vsi->mac_filter_list,
1251                                         struct i40e_mac_filter, list);
1252 }
1253
1254 /**
1255  * i40e_del_mac_all_vlan - Remove a MAC filter from all VLANS
1256  * @vsi: the VSI to be searched
1257  * @macaddr: the mac address to be removed
1258  * @is_vf: true if it is a VF
1259  * @is_netdev: true if it is a netdev
1260  *
1261  * Removes a given MAC address from a VSI, regardless of VLAN
1262  *
1263  * Returns 0 for success, or error
1264  **/
1265 int i40e_del_mac_all_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1266                           bool is_vf, bool is_netdev)
1267 {
1268         struct i40e_mac_filter *f = NULL;
1269         int changed = 0;
1270
1271         WARN(!spin_is_locked(&vsi->mac_filter_list_lock),
1272              "Missing mac_filter_list_lock\n");
1273         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1274                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1275                     (is_vf == f->is_vf) &&
1276                     (is_netdev == f->is_netdev)) {
1277                         f->counter--;
1278                         f->changed = true;
1279                         changed = 1;
1280                 }
1281         }
1282         if (changed) {
1283                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1284                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1285                 return 0;
1286         }
1287         return -ENOENT;
1288 }
1289
1290 /**
1291  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1292  * @vsi: the PF Main VSI - inappropriate for any other VSI
1293  * @macaddr: the MAC address
1294  *
1295  * Some older firmware configurations set up a default promiscuous VLAN
1296  * filter that needs to be removed.
1297  **/
1298 static int i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1299 {
1300         struct i40e_aqc_remove_macvlan_element_data element;
1301         struct i40e_pf *pf = vsi->back;
1302         i40e_status ret;
1303
1304         /* Only appropriate for the PF main VSI */
1305         if (vsi->type != I40E_VSI_MAIN)
1306                 return -EINVAL;
1307
1308         memset(&element, 0, sizeof(element));
1309         ether_addr_copy(element.mac_addr, macaddr);
1310         element.vlan_tag = 0;
1311         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1312                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1313         ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1314         if (ret)
1315                 return -ENOENT;
1316
1317         return 0;
1318 }
1319
1320 /**
1321  * i40e_add_filter - Add a mac/vlan filter to the VSI
1322  * @vsi: the VSI to be searched
1323  * @macaddr: the MAC address
1324  * @vlan: the vlan
1325  * @is_vf: make sure its a VF filter, else doesn't matter
1326  * @is_netdev: make sure its a netdev filter, else doesn't matter
1327  *
1328  * Returns ptr to the filter object or NULL when no memory available.
1329  *
1330  * NOTE: This function is expected to be called with mac_filter_list_lock
1331  * being held.
1332  **/
1333 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1334                                         u8 *macaddr, s16 vlan,
1335                                         bool is_vf, bool is_netdev)
1336 {
1337         struct i40e_mac_filter *f;
1338
1339         if (!vsi || !macaddr)
1340                 return NULL;
1341
1342         /* Do not allow broadcast filter to be added since broadcast filter
1343          * is added as part of add VSI for any newly created VSI except
1344          * FDIR VSI
1345          */
1346         if (is_broadcast_ether_addr(macaddr))
1347                 return NULL;
1348
1349         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1350         if (!f) {
1351                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1352                 if (!f)
1353                         goto add_filter_out;
1354
1355                 ether_addr_copy(f->macaddr, macaddr);
1356                 f->vlan = vlan;
1357                 f->changed = true;
1358
1359                 INIT_LIST_HEAD(&f->list);
1360                 list_add_tail(&f->list, &vsi->mac_filter_list);
1361         }
1362
1363         /* increment counter and add a new flag if needed */
1364         if (is_vf) {
1365                 if (!f->is_vf) {
1366                         f->is_vf = true;
1367                         f->counter++;
1368                 }
1369         } else if (is_netdev) {
1370                 if (!f->is_netdev) {
1371                         f->is_netdev = true;
1372                         f->counter++;
1373                 }
1374         } else {
1375                 f->counter++;
1376         }
1377
1378         /* changed tells sync_filters_subtask to
1379          * push the filter down to the firmware
1380          */
1381         if (f->changed) {
1382                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1383                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1384         }
1385
1386 add_filter_out:
1387         return f;
1388 }
1389
1390 /**
1391  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1392  * @vsi: the VSI to be searched
1393  * @macaddr: the MAC address
1394  * @vlan: the vlan
1395  * @is_vf: make sure it's a VF filter, else doesn't matter
1396  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1397  *
1398  * NOTE: This function is expected to be called with mac_filter_list_lock
1399  * being held.
1400  **/
1401 void i40e_del_filter(struct i40e_vsi *vsi,
1402                      u8 *macaddr, s16 vlan,
1403                      bool is_vf, bool is_netdev)
1404 {
1405         struct i40e_mac_filter *f;
1406
1407         if (!vsi || !macaddr)
1408                 return;
1409
1410         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1411         if (!f || f->counter == 0)
1412                 return;
1413
1414         if (is_vf) {
1415                 if (f->is_vf) {
1416                         f->is_vf = false;
1417                         f->counter--;
1418                 }
1419         } else if (is_netdev) {
1420                 if (f->is_netdev) {
1421                         f->is_netdev = false;
1422                         f->counter--;
1423                 }
1424         } else {
1425                 /* make sure we don't remove a filter in use by VF or netdev */
1426                 int min_f = 0;
1427
1428                 min_f += (f->is_vf ? 1 : 0);
1429                 min_f += (f->is_netdev ? 1 : 0);
1430
1431                 if (f->counter > min_f)
1432                         f->counter--;
1433         }
1434
1435         /* counter == 0 tells sync_filters_subtask to
1436          * remove the filter from the firmware's list
1437          */
1438         if (f->counter == 0) {
1439                 f->changed = true;
1440                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1441                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1442         }
1443 }
1444
1445 /**
1446  * i40e_set_mac - NDO callback to set mac address
1447  * @netdev: network interface device structure
1448  * @p: pointer to an address structure
1449  *
1450  * Returns 0 on success, negative on failure
1451  **/
1452 #ifdef I40E_FCOE
1453 int i40e_set_mac(struct net_device *netdev, void *p)
1454 #else
1455 static int i40e_set_mac(struct net_device *netdev, void *p)
1456 #endif
1457 {
1458         struct i40e_netdev_priv *np = netdev_priv(netdev);
1459         struct i40e_vsi *vsi = np->vsi;
1460         struct i40e_pf *pf = vsi->back;
1461         struct i40e_hw *hw = &pf->hw;
1462         struct sockaddr *addr = p;
1463         struct i40e_mac_filter *f;
1464
1465         if (!is_valid_ether_addr(addr->sa_data))
1466                 return -EADDRNOTAVAIL;
1467
1468         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1469                 netdev_info(netdev, "already using mac address %pM\n",
1470                             addr->sa_data);
1471                 return 0;
1472         }
1473
1474         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1475             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1476                 return -EADDRNOTAVAIL;
1477
1478         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1479                 netdev_info(netdev, "returning to hw mac address %pM\n",
1480                             hw->mac.addr);
1481         else
1482                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1483
1484         if (vsi->type == I40E_VSI_MAIN) {
1485                 i40e_status ret;
1486
1487                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1488                                                 I40E_AQC_WRITE_TYPE_LAA_WOL,
1489                                                 addr->sa_data, NULL);
1490                 if (ret) {
1491                         netdev_info(netdev,
1492                                     "Addr change for Main VSI failed: %d\n",
1493                                     ret);
1494                         return -EADDRNOTAVAIL;
1495                 }
1496         }
1497
1498         if (ether_addr_equal(netdev->dev_addr, hw->mac.addr)) {
1499                 struct i40e_aqc_remove_macvlan_element_data element;
1500
1501                 memset(&element, 0, sizeof(element));
1502                 ether_addr_copy(element.mac_addr, netdev->dev_addr);
1503                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1504                 i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1505         } else {
1506                 spin_lock_bh(&vsi->mac_filter_list_lock);
1507                 i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
1508                                 false, false);
1509                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1510         }
1511
1512         if (ether_addr_equal(addr->sa_data, hw->mac.addr)) {
1513                 struct i40e_aqc_add_macvlan_element_data element;
1514
1515                 memset(&element, 0, sizeof(element));
1516                 ether_addr_copy(element.mac_addr, hw->mac.addr);
1517                 element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
1518                 i40e_aq_add_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1519         } else {
1520                 spin_lock_bh(&vsi->mac_filter_list_lock);
1521                 f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY,
1522                                     false, false);
1523                 if (f)
1524                         f->is_laa = true;
1525                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1526         }
1527
1528         ether_addr_copy(netdev->dev_addr, addr->sa_data);
1529
1530         /* schedule our worker thread which will take care of
1531          * applying the new filter changes
1532          */
1533         i40e_service_event_schedule(vsi->back);
1534         return 0;
1535 }
1536
1537 /**
1538  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1539  * @vsi: the VSI being setup
1540  * @ctxt: VSI context structure
1541  * @enabled_tc: Enabled TCs bitmap
1542  * @is_add: True if called before Add VSI
1543  *
1544  * Setup VSI queue mapping for enabled traffic classes.
1545  **/
1546 #ifdef I40E_FCOE
1547 void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1548                               struct i40e_vsi_context *ctxt,
1549                               u8 enabled_tc,
1550                               bool is_add)
1551 #else
1552 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1553                                      struct i40e_vsi_context *ctxt,
1554                                      u8 enabled_tc,
1555                                      bool is_add)
1556 #endif
1557 {
1558         struct i40e_pf *pf = vsi->back;
1559         u16 sections = 0;
1560         u8 netdev_tc = 0;
1561         u16 numtc = 0;
1562         u16 qcount;
1563         u8 offset;
1564         u16 qmap;
1565         int i;
1566         u16 num_tc_qps = 0;
1567
1568         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1569         offset = 0;
1570
1571         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1572                 /* Find numtc from enabled TC bitmap */
1573                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1574                         if (enabled_tc & BIT(i)) /* TC is enabled */
1575                                 numtc++;
1576                 }
1577                 if (!numtc) {
1578                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1579                         numtc = 1;
1580                 }
1581         } else {
1582                 /* At least TC0 is enabled in case of non-DCB case */
1583                 numtc = 1;
1584         }
1585
1586         vsi->tc_config.numtc = numtc;
1587         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1588         /* Number of queues per enabled TC */
1589         qcount = vsi->alloc_queue_pairs;
1590
1591         num_tc_qps = qcount / numtc;
1592         num_tc_qps = min_t(int, num_tc_qps, i40e_pf_get_max_q_per_tc(pf));
1593
1594         /* Setup queue offset/count for all TCs for given VSI */
1595         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1596                 /* See if the given TC is enabled for the given VSI */
1597                 if (vsi->tc_config.enabled_tc & BIT(i)) {
1598                         /* TC is enabled */
1599                         int pow, num_qps;
1600
1601                         switch (vsi->type) {
1602                         case I40E_VSI_MAIN:
1603                                 qcount = min_t(int, pf->alloc_rss_size,
1604                                                num_tc_qps);
1605                                 break;
1606 #ifdef I40E_FCOE
1607                         case I40E_VSI_FCOE:
1608                                 qcount = num_tc_qps;
1609                                 break;
1610 #endif
1611                         case I40E_VSI_FDIR:
1612                         case I40E_VSI_SRIOV:
1613                         case I40E_VSI_VMDQ2:
1614                         default:
1615                                 qcount = num_tc_qps;
1616                                 WARN_ON(i != 0);
1617                                 break;
1618                         }
1619                         vsi->tc_config.tc_info[i].qoffset = offset;
1620                         vsi->tc_config.tc_info[i].qcount = qcount;
1621
1622                         /* find the next higher power-of-2 of num queue pairs */
1623                         num_qps = qcount;
1624                         pow = 0;
1625                         while (num_qps && (BIT_ULL(pow) < qcount)) {
1626                                 pow++;
1627                                 num_qps >>= 1;
1628                         }
1629
1630                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1631                         qmap =
1632                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1633                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1634
1635                         offset += qcount;
1636                 } else {
1637                         /* TC is not enabled so set the offset to
1638                          * default queue and allocate one queue
1639                          * for the given TC.
1640                          */
1641                         vsi->tc_config.tc_info[i].qoffset = 0;
1642                         vsi->tc_config.tc_info[i].qcount = 1;
1643                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1644
1645                         qmap = 0;
1646                 }
1647                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1648         }
1649
1650         /* Set actual Tx/Rx queue pairs */
1651         vsi->num_queue_pairs = offset;
1652         if ((vsi->type == I40E_VSI_MAIN) && (numtc == 1)) {
1653                 if (vsi->req_queue_pairs > 0)
1654                         vsi->num_queue_pairs = vsi->req_queue_pairs;
1655                 else if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1656                         vsi->num_queue_pairs = pf->num_lan_msix;
1657         }
1658
1659         /* Scheduler section valid can only be set for ADD VSI */
1660         if (is_add) {
1661                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1662
1663                 ctxt->info.up_enable_bits = enabled_tc;
1664         }
1665         if (vsi->type == I40E_VSI_SRIOV) {
1666                 ctxt->info.mapping_flags |=
1667                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1668                 for (i = 0; i < vsi->num_queue_pairs; i++)
1669                         ctxt->info.queue_mapping[i] =
1670                                                cpu_to_le16(vsi->base_queue + i);
1671         } else {
1672                 ctxt->info.mapping_flags |=
1673                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1674                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1675         }
1676         ctxt->info.valid_sections |= cpu_to_le16(sections);
1677 }
1678
1679 /**
1680  * i40e_set_rx_mode - NDO callback to set the netdev filters
1681  * @netdev: network interface device structure
1682  **/
1683 #ifdef I40E_FCOE
1684 void i40e_set_rx_mode(struct net_device *netdev)
1685 #else
1686 static void i40e_set_rx_mode(struct net_device *netdev)
1687 #endif
1688 {
1689         struct i40e_netdev_priv *np = netdev_priv(netdev);
1690         struct i40e_mac_filter *f, *ftmp;
1691         struct i40e_vsi *vsi = np->vsi;
1692         struct netdev_hw_addr *uca;
1693         struct netdev_hw_addr *mca;
1694         struct netdev_hw_addr *ha;
1695
1696         spin_lock_bh(&vsi->mac_filter_list_lock);
1697
1698         /* add addr if not already in the filter list */
1699         netdev_for_each_uc_addr(uca, netdev) {
1700                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1701                         if (i40e_is_vsi_in_vlan(vsi))
1702                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1703                                                      false, true);
1704                         else
1705                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1706                                                 false, true);
1707                 }
1708         }
1709
1710         netdev_for_each_mc_addr(mca, netdev) {
1711                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1712                         if (i40e_is_vsi_in_vlan(vsi))
1713                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1714                                                      false, true);
1715                         else
1716                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1717                                                 false, true);
1718                 }
1719         }
1720
1721         /* remove filter if not in netdev list */
1722         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1723
1724                 if (!f->is_netdev)
1725                         continue;
1726
1727                 netdev_for_each_mc_addr(mca, netdev)
1728                         if (ether_addr_equal(mca->addr, f->macaddr))
1729                                 goto bottom_of_search_loop;
1730
1731                 netdev_for_each_uc_addr(uca, netdev)
1732                         if (ether_addr_equal(uca->addr, f->macaddr))
1733                                 goto bottom_of_search_loop;
1734
1735                 for_each_dev_addr(netdev, ha)
1736                         if (ether_addr_equal(ha->addr, f->macaddr))
1737                                 goto bottom_of_search_loop;
1738
1739                 /* f->macaddr wasn't found in uc, mc, or ha list so delete it */
1740                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1741
1742 bottom_of_search_loop:
1743                 continue;
1744         }
1745         spin_unlock_bh(&vsi->mac_filter_list_lock);
1746
1747         /* check for other flag changes */
1748         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1749                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1750                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1751         }
1752
1753         /* schedule our worker thread which will take care of
1754          * applying the new filter changes
1755          */
1756         i40e_service_event_schedule(vsi->back);
1757 }
1758
1759 /**
1760  * i40e_mac_filter_entry_clone - Clones a MAC filter entry
1761  * @src: source MAC filter entry to be clones
1762  *
1763  * Returns the pointer to newly cloned MAC filter entry or NULL
1764  * in case of error
1765  **/
1766 static struct i40e_mac_filter *i40e_mac_filter_entry_clone(
1767                                         struct i40e_mac_filter *src)
1768 {
1769         struct i40e_mac_filter *f;
1770
1771         f = kzalloc(sizeof(*f), GFP_ATOMIC);
1772         if (!f)
1773                 return NULL;
1774         *f = *src;
1775
1776         INIT_LIST_HEAD(&f->list);
1777
1778         return f;
1779 }
1780
1781 /**
1782  * i40e_undo_del_filter_entries - Undo the changes made to MAC filter entries
1783  * @vsi: pointer to vsi struct
1784  * @from: Pointer to list which contains MAC filter entries - changes to
1785  *        those entries needs to be undone.
1786  *
1787  * MAC filter entries from list were slated to be removed from device.
1788  **/
1789 static void i40e_undo_del_filter_entries(struct i40e_vsi *vsi,
1790                                          struct list_head *from)
1791 {
1792         struct i40e_mac_filter *f, *ftmp;
1793
1794         list_for_each_entry_safe(f, ftmp, from, list) {
1795                 f->changed = true;
1796                 /* Move the element back into MAC filter list*/
1797                 list_move_tail(&f->list, &vsi->mac_filter_list);
1798         }
1799 }
1800
1801 /**
1802  * i40e_undo_add_filter_entries - Undo the changes made to MAC filter entries
1803  * @vsi: pointer to vsi struct
1804  *
1805  * MAC filter entries from list were slated to be added from device.
1806  **/
1807 static void i40e_undo_add_filter_entries(struct i40e_vsi *vsi)
1808 {
1809         struct i40e_mac_filter *f, *ftmp;
1810
1811         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1812                 if (!f->changed && f->counter)
1813                         f->changed = true;
1814         }
1815 }
1816
1817 /**
1818  * i40e_cleanup_add_list - Deletes the element from add list and release
1819  *                      memory
1820  * @add_list: Pointer to list which contains MAC filter entries
1821  **/
1822 static void i40e_cleanup_add_list(struct list_head *add_list)
1823 {
1824         struct i40e_mac_filter *f, *ftmp;
1825
1826         list_for_each_entry_safe(f, ftmp, add_list, list) {
1827                 list_del(&f->list);
1828                 kfree(f);
1829         }
1830 }
1831
1832 /**
1833  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1834  * @vsi: ptr to the VSI
1835  *
1836  * Push any outstanding VSI filter changes through the AdminQ.
1837  *
1838  * Returns 0 or error value
1839  **/
1840 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
1841 {
1842         struct list_head tmp_del_list, tmp_add_list;
1843         struct i40e_mac_filter *f, *ftmp, *fclone;
1844         struct i40e_hw *hw = &vsi->back->hw;
1845         bool promisc_forced_on = false;
1846         bool add_happened = false;
1847         char vsi_name[16] = "PF";
1848         int filter_list_len = 0;
1849         u32 changed_flags = 0;
1850         i40e_status aq_ret = 0;
1851         bool err_cond = false;
1852         int retval = 0;
1853         struct i40e_pf *pf;
1854         int num_add = 0;
1855         int num_del = 0;
1856         int aq_err = 0;
1857         u16 cmd_flags;
1858
1859         /* empty array typed pointers, kcalloc later */
1860         struct i40e_aqc_add_macvlan_element_data *add_list;
1861         struct i40e_aqc_remove_macvlan_element_data *del_list;
1862
1863         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1864                 usleep_range(1000, 2000);
1865         pf = vsi->back;
1866
1867         if (vsi->netdev) {
1868                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1869                 vsi->current_netdev_flags = vsi->netdev->flags;
1870         }
1871
1872         INIT_LIST_HEAD(&tmp_del_list);
1873         INIT_LIST_HEAD(&tmp_add_list);
1874
1875         if (vsi->type == I40E_VSI_SRIOV)
1876                 snprintf(vsi_name, sizeof(vsi_name) - 1, "VF %d", vsi->vf_id);
1877         else if (vsi->type != I40E_VSI_MAIN)
1878                 snprintf(vsi_name, sizeof(vsi_name) - 1, "vsi %d", vsi->seid);
1879
1880         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1881                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1882
1883                 spin_lock_bh(&vsi->mac_filter_list_lock);
1884                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1885                         if (!f->changed)
1886                                 continue;
1887
1888                         if (f->counter != 0)
1889                                 continue;
1890                         f->changed = false;
1891
1892                         /* Move the element into temporary del_list */
1893                         list_move_tail(&f->list, &tmp_del_list);
1894                 }
1895
1896                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1897                         if (!f->changed)
1898                                 continue;
1899
1900                         if (f->counter == 0)
1901                                 continue;
1902                         f->changed = false;
1903
1904                         /* Clone MAC filter entry and add into temporary list */
1905                         fclone = i40e_mac_filter_entry_clone(f);
1906                         if (!fclone) {
1907                                 err_cond = true;
1908                                 break;
1909                         }
1910                         list_add_tail(&fclone->list, &tmp_add_list);
1911                 }
1912
1913                 /* if failed to clone MAC filter entry - undo */
1914                 if (err_cond) {
1915                         i40e_undo_del_filter_entries(vsi, &tmp_del_list);
1916                         i40e_undo_add_filter_entries(vsi);
1917                 }
1918                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1919
1920                 if (err_cond) {
1921                         i40e_cleanup_add_list(&tmp_add_list);
1922                         retval = -ENOMEM;
1923                         goto out;
1924                 }
1925         }
1926
1927         /* Now process 'del_list' outside the lock */
1928         if (!list_empty(&tmp_del_list)) {
1929                 int del_list_size;
1930
1931                 filter_list_len = hw->aq.asq_buf_size /
1932                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1933                 del_list_size = filter_list_len *
1934                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1935                 del_list = kzalloc(del_list_size, GFP_ATOMIC);
1936                 if (!del_list) {
1937                         i40e_cleanup_add_list(&tmp_add_list);
1938
1939                         /* Undo VSI's MAC filter entry element updates */
1940                         spin_lock_bh(&vsi->mac_filter_list_lock);
1941                         i40e_undo_del_filter_entries(vsi, &tmp_del_list);
1942                         i40e_undo_add_filter_entries(vsi);
1943                         spin_unlock_bh(&vsi->mac_filter_list_lock);
1944                         retval = -ENOMEM;
1945                         goto out;
1946                 }
1947
1948                 list_for_each_entry_safe(f, ftmp, &tmp_del_list, list) {
1949                         cmd_flags = 0;
1950
1951                         /* add to delete list */
1952                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
1953                         del_list[num_del].vlan_tag =
1954                                 cpu_to_le16((u16)(f->vlan ==
1955                                             I40E_VLAN_ANY ? 0 : f->vlan));
1956
1957                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1958                         del_list[num_del].flags = cmd_flags;
1959                         num_del++;
1960
1961                         /* flush a full buffer */
1962                         if (num_del == filter_list_len) {
1963                                 aq_ret =
1964                                         i40e_aq_remove_macvlan(hw, vsi->seid,
1965                                                                del_list,
1966                                                                num_del, NULL);
1967                                 aq_err = hw->aq.asq_last_status;
1968                                 num_del = 0;
1969                                 memset(del_list, 0, del_list_size);
1970
1971                                 if (aq_ret && aq_err != I40E_AQ_RC_ENOENT) {
1972                                         retval = -EIO;
1973                                         dev_err(&pf->pdev->dev,
1974                                                  "ignoring delete macvlan error on %s, err %s, aq_err %s while flushing a full buffer\n",
1975                                                  vsi_name,
1976                                                  i40e_stat_str(hw, aq_ret),
1977                                                  i40e_aq_str(hw, aq_err));
1978                                 }
1979                         }
1980                         /* Release memory for MAC filter entries which were
1981                          * synced up with HW.
1982                          */
1983                         list_del(&f->list);
1984                         kfree(f);
1985                 }
1986
1987                 if (num_del) {
1988                         aq_ret = i40e_aq_remove_macvlan(hw, vsi->seid, del_list,
1989                                                         num_del, NULL);
1990                         aq_err = hw->aq.asq_last_status;
1991                         num_del = 0;
1992
1993                         if (aq_ret && aq_err != I40E_AQ_RC_ENOENT)
1994                                 dev_info(&pf->pdev->dev,
1995                                          "ignoring delete macvlan error on %s, err %s aq_err %s\n",
1996                                          vsi_name,
1997                                          i40e_stat_str(hw, aq_ret),
1998                                          i40e_aq_str(hw, aq_err));
1999                 }
2000
2001                 kfree(del_list);
2002                 del_list = NULL;
2003         }
2004
2005         if (!list_empty(&tmp_add_list)) {
2006                 int add_list_size;
2007
2008                 /* do all the adds now */
2009                 filter_list_len = hw->aq.asq_buf_size /
2010                                sizeof(struct i40e_aqc_add_macvlan_element_data),
2011                 add_list_size = filter_list_len *
2012                                sizeof(struct i40e_aqc_add_macvlan_element_data);
2013                 add_list = kzalloc(add_list_size, GFP_ATOMIC);
2014                 if (!add_list) {
2015                         /* Purge element from temporary lists */
2016                         i40e_cleanup_add_list(&tmp_add_list);
2017
2018                         /* Undo add filter entries from VSI MAC filter list */
2019                         spin_lock_bh(&vsi->mac_filter_list_lock);
2020                         i40e_undo_add_filter_entries(vsi);
2021                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2022                         retval = -ENOMEM;
2023                         goto out;
2024                 }
2025
2026                 list_for_each_entry_safe(f, ftmp, &tmp_add_list, list) {
2027
2028                         add_happened = true;
2029                         cmd_flags = 0;
2030
2031                         /* add to add array */
2032                         ether_addr_copy(add_list[num_add].mac_addr, f->macaddr);
2033                         add_list[num_add].vlan_tag =
2034                                 cpu_to_le16(
2035                                  (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
2036                         add_list[num_add].queue_number = 0;
2037
2038                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
2039                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
2040                         num_add++;
2041
2042                         /* flush a full buffer */
2043                         if (num_add == filter_list_len) {
2044                                 aq_ret = i40e_aq_add_macvlan(hw, vsi->seid,
2045                                                              add_list, num_add,
2046                                                              NULL);
2047                                 aq_err = hw->aq.asq_last_status;
2048                                 num_add = 0;
2049
2050                                 if (aq_ret)
2051                                         break;
2052                                 memset(add_list, 0, add_list_size);
2053                         }
2054                         /* Entries from tmp_add_list were cloned from MAC
2055                          * filter list, hence clean those cloned entries
2056                          */
2057                         list_del(&f->list);
2058                         kfree(f);
2059                 }
2060
2061                 if (num_add) {
2062                         aq_ret = i40e_aq_add_macvlan(hw, vsi->seid,
2063                                                      add_list, num_add, NULL);
2064                         aq_err = hw->aq.asq_last_status;
2065                         num_add = 0;
2066                 }
2067                 kfree(add_list);
2068                 add_list = NULL;
2069
2070                 if (add_happened && aq_ret && aq_err != I40E_AQ_RC_EINVAL) {
2071                         retval = i40e_aq_rc_to_posix(aq_ret, aq_err);
2072                         dev_info(&pf->pdev->dev,
2073                                  "add filter failed on %s, err %s aq_err %s\n",
2074                                  vsi_name,
2075                                  i40e_stat_str(hw, aq_ret),
2076                                  i40e_aq_str(hw, aq_err));
2077                         if ((hw->aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
2078                             !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2079                                       &vsi->state)) {
2080                                 promisc_forced_on = true;
2081                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2082                                         &vsi->state);
2083                                 dev_info(&pf->pdev->dev, "promiscuous mode forced on %s\n",
2084                                          vsi_name);
2085                         }
2086                 }
2087         }
2088
2089         /* if the VF is not trusted do not do promisc */
2090         if ((vsi->type == I40E_VSI_SRIOV) && !pf->vf[vsi->vf_id].trusted) {
2091                 clear_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state);
2092                 goto out;
2093         }
2094
2095         /* check for changes in promiscuous modes */
2096         if (changed_flags & IFF_ALLMULTI) {
2097                 bool cur_multipromisc;
2098
2099                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
2100                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
2101                                                                vsi->seid,
2102                                                                cur_multipromisc,
2103                                                                NULL);
2104                 if (aq_ret) {
2105                         retval = i40e_aq_rc_to_posix(aq_ret,
2106                                                      hw->aq.asq_last_status);
2107                         dev_info(&pf->pdev->dev,
2108                                  "set multi promisc failed on %s, err %s aq_err %s\n",
2109                                  vsi_name,
2110                                  i40e_stat_str(hw, aq_ret),
2111                                  i40e_aq_str(hw, hw->aq.asq_last_status));
2112                 }
2113         }
2114         if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
2115                 bool cur_promisc;
2116
2117                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
2118                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2119                                         &vsi->state));
2120                 if ((vsi->type == I40E_VSI_MAIN) &&
2121                     (pf->lan_veb != I40E_NO_VEB) &&
2122                     !(pf->flags & I40E_FLAG_MFP_ENABLED)) {
2123                         /* set defport ON for Main VSI instead of true promisc
2124                          * this way we will get all unicast/multicast and VLAN
2125                          * promisc behavior but will not get VF or VMDq traffic
2126                          * replicated on the Main VSI.
2127                          */
2128                         if (pf->cur_promisc != cur_promisc) {
2129                                 pf->cur_promisc = cur_promisc;
2130                                 if (cur_promisc)
2131                                         aq_ret =
2132                                               i40e_aq_set_default_vsi(hw,
2133                                                                       vsi->seid,
2134                                                                       NULL);
2135                                 else
2136                                         aq_ret =
2137                                             i40e_aq_clear_default_vsi(hw,
2138                                                                       vsi->seid,
2139                                                                       NULL);
2140                                 if (aq_ret) {
2141                                         retval = i40e_aq_rc_to_posix(aq_ret,
2142                                                         hw->aq.asq_last_status);
2143                                         dev_info(&pf->pdev->dev,
2144                                                  "Set default VSI failed on %s, err %s, aq_err %s\n",
2145                                                  vsi_name,
2146                                                  i40e_stat_str(hw, aq_ret),
2147                                                  i40e_aq_str(hw,
2148                                                      hw->aq.asq_last_status));
2149                                 }
2150                         }
2151                 } else {
2152                         aq_ret = i40e_aq_set_vsi_unicast_promiscuous(
2153                                                           hw,
2154                                                           vsi->seid,
2155                                                           cur_promisc, NULL,
2156                                                           true);
2157                         if (aq_ret) {
2158                                 retval =
2159                                 i40e_aq_rc_to_posix(aq_ret,
2160                                                     hw->aq.asq_last_status);
2161                                 dev_info(&pf->pdev->dev,
2162                                          "set unicast promisc failed on %s, err %s, aq_err %s\n",
2163                                          vsi_name,
2164                                          i40e_stat_str(hw, aq_ret),
2165                                          i40e_aq_str(hw,
2166                                                      hw->aq.asq_last_status));
2167                         }
2168                         aq_ret = i40e_aq_set_vsi_multicast_promiscuous(
2169                                                           hw,
2170                                                           vsi->seid,
2171                                                           cur_promisc, NULL);
2172                         if (aq_ret) {
2173                                 retval =
2174                                 i40e_aq_rc_to_posix(aq_ret,
2175                                                     hw->aq.asq_last_status);
2176                                 dev_info(&pf->pdev->dev,
2177                                          "set multicast promisc failed on %s, err %s, aq_err %s\n",
2178                                          vsi_name,
2179                                          i40e_stat_str(hw, aq_ret),
2180                                          i40e_aq_str(hw,
2181                                                      hw->aq.asq_last_status));
2182                         }
2183                 }
2184                 aq_ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
2185                                                    vsi->seid,
2186                                                    cur_promisc, NULL);
2187                 if (aq_ret) {
2188                         retval = i40e_aq_rc_to_posix(aq_ret,
2189                                                      pf->hw.aq.asq_last_status);
2190                         dev_info(&pf->pdev->dev,
2191                                  "set brdcast promisc failed, err %s, aq_err %s\n",
2192                                          i40e_stat_str(hw, aq_ret),
2193                                          i40e_aq_str(hw,
2194                                                      hw->aq.asq_last_status));
2195                 }
2196         }
2197 out:
2198         /* if something went wrong then set the changed flag so we try again */
2199         if (retval)
2200                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
2201
2202         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
2203         return retval;
2204 }
2205
2206 /**
2207  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
2208  * @pf: board private structure
2209  **/
2210 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
2211 {
2212         int v;
2213
2214         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
2215                 return;
2216         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
2217
2218         for (v = 0; v < pf->num_alloc_vsi; v++) {
2219                 if (pf->vsi[v] &&
2220                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED)) {
2221                         int ret = i40e_sync_vsi_filters(pf->vsi[v]);
2222
2223                         if (ret) {
2224                                 /* come back and try again later */
2225                                 pf->flags |= I40E_FLAG_FILTER_SYNC;
2226                                 break;
2227                         }
2228                 }
2229         }
2230 }
2231
2232 /**
2233  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
2234  * @netdev: network interface device structure
2235  * @new_mtu: new value for maximum frame size
2236  *
2237  * Returns 0 on success, negative on failure
2238  **/
2239 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
2240 {
2241         struct i40e_netdev_priv *np = netdev_priv(netdev);
2242         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
2243         struct i40e_vsi *vsi = np->vsi;
2244
2245         /* MTU < 68 is an error and causes problems on some kernels */
2246         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
2247                 return -EINVAL;
2248
2249         netdev_info(netdev, "changing MTU from %d to %d\n",
2250                     netdev->mtu, new_mtu);
2251         netdev->mtu = new_mtu;
2252         if (netif_running(netdev))
2253                 i40e_vsi_reinit_locked(vsi);
2254         i40e_notify_client_of_l2_param_changes(vsi);
2255         return 0;
2256 }
2257
2258 /**
2259  * i40e_ioctl - Access the hwtstamp interface
2260  * @netdev: network interface device structure
2261  * @ifr: interface request data
2262  * @cmd: ioctl command
2263  **/
2264 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2265 {
2266         struct i40e_netdev_priv *np = netdev_priv(netdev);
2267         struct i40e_pf *pf = np->vsi->back;
2268
2269         switch (cmd) {
2270         case SIOCGHWTSTAMP:
2271                 return i40e_ptp_get_ts_config(pf, ifr);
2272         case SIOCSHWTSTAMP:
2273                 return i40e_ptp_set_ts_config(pf, ifr);
2274         default:
2275                 return -EOPNOTSUPP;
2276         }
2277 }
2278
2279 /**
2280  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
2281  * @vsi: the vsi being adjusted
2282  **/
2283 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
2284 {
2285         struct i40e_vsi_context ctxt;
2286         i40e_status ret;
2287
2288         if ((vsi->info.valid_sections &
2289              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2290             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
2291                 return;  /* already enabled */
2292
2293         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2294         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2295                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
2296
2297         ctxt.seid = vsi->seid;
2298         ctxt.info = vsi->info;
2299         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2300         if (ret) {
2301                 dev_info(&vsi->back->pdev->dev,
2302                          "update vlan stripping failed, err %s aq_err %s\n",
2303                          i40e_stat_str(&vsi->back->hw, ret),
2304                          i40e_aq_str(&vsi->back->hw,
2305                                      vsi->back->hw.aq.asq_last_status));
2306         }
2307 }
2308
2309 /**
2310  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
2311  * @vsi: the vsi being adjusted
2312  **/
2313 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
2314 {
2315         struct i40e_vsi_context ctxt;
2316         i40e_status ret;
2317
2318         if ((vsi->info.valid_sections &
2319              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2320             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
2321              I40E_AQ_VSI_PVLAN_EMOD_MASK))
2322                 return;  /* already disabled */
2323
2324         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2325         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2326                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
2327
2328         ctxt.seid = vsi->seid;
2329         ctxt.info = vsi->info;
2330         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2331         if (ret) {
2332                 dev_info(&vsi->back->pdev->dev,
2333                          "update vlan stripping failed, err %s aq_err %s\n",
2334                          i40e_stat_str(&vsi->back->hw, ret),
2335                          i40e_aq_str(&vsi->back->hw,
2336                                      vsi->back->hw.aq.asq_last_status));
2337         }
2338 }
2339
2340 /**
2341  * i40e_vlan_rx_register - Setup or shutdown vlan offload
2342  * @netdev: network interface to be adjusted
2343  * @features: netdev features to test if VLAN offload is enabled or not
2344  **/
2345 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
2346 {
2347         struct i40e_netdev_priv *np = netdev_priv(netdev);
2348         struct i40e_vsi *vsi = np->vsi;
2349
2350         if (features & NETIF_F_HW_VLAN_CTAG_RX)
2351                 i40e_vlan_stripping_enable(vsi);
2352         else
2353                 i40e_vlan_stripping_disable(vsi);
2354 }
2355
2356 /**
2357  * i40e_vsi_add_vlan - Add vsi membership for given vlan
2358  * @vsi: the vsi being configured
2359  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2360  **/
2361 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
2362 {
2363         struct i40e_mac_filter *f, *add_f;
2364         bool is_netdev, is_vf;
2365
2366         is_vf = (vsi->type == I40E_VSI_SRIOV);
2367         is_netdev = !!(vsi->netdev);
2368
2369         /* Locked once because all functions invoked below iterates list*/
2370         spin_lock_bh(&vsi->mac_filter_list_lock);
2371
2372         if (is_netdev) {
2373                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
2374                                         is_vf, is_netdev);
2375                 if (!add_f) {
2376                         dev_info(&vsi->back->pdev->dev,
2377                                  "Could not add vlan filter %d for %pM\n",
2378                                  vid, vsi->netdev->dev_addr);
2379                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2380                         return -ENOMEM;
2381                 }
2382         }
2383
2384         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2385                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2386                 if (!add_f) {
2387                         dev_info(&vsi->back->pdev->dev,
2388                                  "Could not add vlan filter %d for %pM\n",
2389                                  vid, f->macaddr);
2390                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2391                         return -ENOMEM;
2392                 }
2393         }
2394
2395         /* Now if we add a vlan tag, make sure to check if it is the first
2396          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
2397          * with 0, so we now accept untagged and specified tagged traffic
2398          * (and not any taged and untagged)
2399          */
2400         if (vid > 0) {
2401                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
2402                                                   I40E_VLAN_ANY,
2403                                                   is_vf, is_netdev)) {
2404                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
2405                                         I40E_VLAN_ANY, is_vf, is_netdev);
2406                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
2407                                                 is_vf, is_netdev);
2408                         if (!add_f) {
2409                                 dev_info(&vsi->back->pdev->dev,
2410                                          "Could not add filter 0 for %pM\n",
2411                                          vsi->netdev->dev_addr);
2412                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2413                                 return -ENOMEM;
2414                         }
2415                 }
2416         }
2417
2418         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
2419         if (vid > 0 && !vsi->info.pvid) {
2420                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2421                         if (!i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2422                                               is_vf, is_netdev))
2423                                 continue;
2424                         i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2425                                         is_vf, is_netdev);
2426                         add_f = i40e_add_filter(vsi, f->macaddr,
2427                                                 0, is_vf, is_netdev);
2428                         if (!add_f) {
2429                                 dev_info(&vsi->back->pdev->dev,
2430                                          "Could not add filter 0 for %pM\n",
2431                                         f->macaddr);
2432                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2433                                 return -ENOMEM;
2434                         }
2435                 }
2436         }
2437
2438         spin_unlock_bh(&vsi->mac_filter_list_lock);
2439
2440         /* schedule our worker thread which will take care of
2441          * applying the new filter changes
2442          */
2443         i40e_service_event_schedule(vsi->back);
2444         return 0;
2445 }
2446
2447 /**
2448  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
2449  * @vsi: the vsi being configured
2450  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2451  *
2452  * Return: 0 on success or negative otherwise
2453  **/
2454 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
2455 {
2456         struct net_device *netdev = vsi->netdev;
2457         struct i40e_mac_filter *f, *add_f;
2458         bool is_vf, is_netdev;
2459         int filter_count = 0;
2460
2461         is_vf = (vsi->type == I40E_VSI_SRIOV);
2462         is_netdev = !!(netdev);
2463
2464         /* Locked once because all functions invoked below iterates list */
2465         spin_lock_bh(&vsi->mac_filter_list_lock);
2466
2467         if (is_netdev)
2468                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
2469
2470         list_for_each_entry(f, &vsi->mac_filter_list, list)
2471                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2472
2473         /* go through all the filters for this VSI and if there is only
2474          * vid == 0 it means there are no other filters, so vid 0 must
2475          * be replaced with -1. This signifies that we should from now
2476          * on accept any traffic (with any tag present, or untagged)
2477          */
2478         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2479                 if (is_netdev) {
2480                         if (f->vlan &&
2481                             ether_addr_equal(netdev->dev_addr, f->macaddr))
2482                                 filter_count++;
2483                 }
2484
2485                 if (f->vlan)
2486                         filter_count++;
2487         }
2488
2489         if (!filter_count && is_netdev) {
2490                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
2491                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
2492                                     is_vf, is_netdev);
2493                 if (!f) {
2494                         dev_info(&vsi->back->pdev->dev,
2495                                  "Could not add filter %d for %pM\n",
2496                                  I40E_VLAN_ANY, netdev->dev_addr);
2497                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2498                         return -ENOMEM;
2499                 }
2500         }
2501
2502         if (!filter_count) {
2503                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2504                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
2505                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2506                                                 is_vf, is_netdev);
2507                         if (!add_f) {
2508                                 dev_info(&vsi->back->pdev->dev,
2509                                          "Could not add filter %d for %pM\n",
2510                                          I40E_VLAN_ANY, f->macaddr);
2511                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2512                                 return -ENOMEM;
2513                         }
2514                 }
2515         }
2516
2517         spin_unlock_bh(&vsi->mac_filter_list_lock);
2518
2519         /* schedule our worker thread which will take care of
2520          * applying the new filter changes
2521          */
2522         i40e_service_event_schedule(vsi->back);
2523         return 0;
2524 }
2525
2526 /**
2527  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2528  * @netdev: network interface to be adjusted
2529  * @vid: vlan id to be added
2530  *
2531  * net_device_ops implementation for adding vlan ids
2532  **/
2533 #ifdef I40E_FCOE
2534 int i40e_vlan_rx_add_vid(struct net_device *netdev,
2535                          __always_unused __be16 proto, u16 vid)
2536 #else
2537 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2538                                 __always_unused __be16 proto, u16 vid)
2539 #endif
2540 {
2541         struct i40e_netdev_priv *np = netdev_priv(netdev);
2542         struct i40e_vsi *vsi = np->vsi;
2543         int ret = 0;
2544
2545         if (vid > 4095)
2546                 return -EINVAL;
2547
2548         netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
2549
2550         /* If the network stack called us with vid = 0 then
2551          * it is asking to receive priority tagged packets with
2552          * vlan id 0.  Our HW receives them by default when configured
2553          * to receive untagged packets so there is no need to add an
2554          * extra filter for vlan 0 tagged packets.
2555          */
2556         if (vid)
2557                 ret = i40e_vsi_add_vlan(vsi, vid);
2558
2559         if (!ret && (vid < VLAN_N_VID))
2560                 set_bit(vid, vsi->active_vlans);
2561
2562         return ret;
2563 }
2564
2565 /**
2566  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2567  * @netdev: network interface to be adjusted
2568  * @vid: vlan id to be removed
2569  *
2570  * net_device_ops implementation for removing vlan ids
2571  **/
2572 #ifdef I40E_FCOE
2573 int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2574                           __always_unused __be16 proto, u16 vid)
2575 #else
2576 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2577                                  __always_unused __be16 proto, u16 vid)
2578 #endif
2579 {
2580         struct i40e_netdev_priv *np = netdev_priv(netdev);
2581         struct i40e_vsi *vsi = np->vsi;
2582
2583         netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
2584
2585         /* return code is ignored as there is nothing a user
2586          * can do about failure to remove and a log message was
2587          * already printed from the other function
2588          */
2589         i40e_vsi_kill_vlan(vsi, vid);
2590
2591         clear_bit(vid, vsi->active_vlans);
2592
2593         return 0;
2594 }
2595
2596 /**
2597  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2598  * @vsi: the vsi being brought back up
2599  **/
2600 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2601 {
2602         u16 vid;
2603
2604         if (!vsi->netdev)
2605                 return;
2606
2607         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2608
2609         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2610                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2611                                      vid);
2612 }
2613
2614 /**
2615  * i40e_vsi_add_pvid - Add pvid for the VSI
2616  * @vsi: the vsi being adjusted
2617  * @vid: the vlan id to set as a PVID
2618  **/
2619 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2620 {
2621         struct i40e_vsi_context ctxt;
2622         i40e_status ret;
2623
2624         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2625         vsi->info.pvid = cpu_to_le16(vid);
2626         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2627                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2628                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2629
2630         ctxt.seid = vsi->seid;
2631         ctxt.info = vsi->info;
2632         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2633         if (ret) {
2634                 dev_info(&vsi->back->pdev->dev,
2635                          "add pvid failed, err %s aq_err %s\n",
2636                          i40e_stat_str(&vsi->back->hw, ret),
2637                          i40e_aq_str(&vsi->back->hw,
2638                                      vsi->back->hw.aq.asq_last_status));
2639                 return -ENOENT;
2640         }
2641
2642         return 0;
2643 }
2644
2645 /**
2646  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2647  * @vsi: the vsi being adjusted
2648  *
2649  * Just use the vlan_rx_register() service to put it back to normal
2650  **/
2651 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2652 {
2653         i40e_vlan_stripping_disable(vsi);
2654
2655         vsi->info.pvid = 0;
2656 }
2657
2658 /**
2659  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2660  * @vsi: ptr to the VSI
2661  *
2662  * If this function returns with an error, then it's possible one or
2663  * more of the rings is populated (while the rest are not).  It is the
2664  * callers duty to clean those orphaned rings.
2665  *
2666  * Return 0 on success, negative on failure
2667  **/
2668 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2669 {
2670         int i, err = 0;
2671
2672         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2673                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2674
2675         return err;
2676 }
2677
2678 /**
2679  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2680  * @vsi: ptr to the VSI
2681  *
2682  * Free VSI's transmit software resources
2683  **/
2684 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2685 {
2686         int i;
2687
2688         if (!vsi->tx_rings)
2689                 return;
2690
2691         for (i = 0; i < vsi->num_queue_pairs; i++)
2692                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2693                         i40e_free_tx_resources(vsi->tx_rings[i]);
2694 }
2695
2696 /**
2697  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2698  * @vsi: ptr to the VSI
2699  *
2700  * If this function returns with an error, then it's possible one or
2701  * more of the rings is populated (while the rest are not).  It is the
2702  * callers duty to clean those orphaned rings.
2703  *
2704  * Return 0 on success, negative on failure
2705  **/
2706 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2707 {
2708         int i, err = 0;
2709
2710         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2711                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2712 #ifdef I40E_FCOE
2713         i40e_fcoe_setup_ddp_resources(vsi);
2714 #endif
2715         return err;
2716 }
2717
2718 /**
2719  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2720  * @vsi: ptr to the VSI
2721  *
2722  * Free all receive software resources
2723  **/
2724 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2725 {
2726         int i;
2727
2728         if (!vsi->rx_rings)
2729                 return;
2730
2731         for (i = 0; i < vsi->num_queue_pairs; i++)
2732                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2733                         i40e_free_rx_resources(vsi->rx_rings[i]);
2734 #ifdef I40E_FCOE
2735         i40e_fcoe_free_ddp_resources(vsi);
2736 #endif
2737 }
2738
2739 /**
2740  * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
2741  * @ring: The Tx ring to configure
2742  *
2743  * This enables/disables XPS for a given Tx descriptor ring
2744  * based on the TCs enabled for the VSI that ring belongs to.
2745  **/
2746 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
2747 {
2748         struct i40e_vsi *vsi = ring->vsi;
2749         cpumask_var_t mask;
2750
2751         if (!ring->q_vector || !ring->netdev)
2752                 return;
2753
2754         /* Single TC mode enable XPS */
2755         if (vsi->tc_config.numtc <= 1) {
2756                 if (!test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2757                         netif_set_xps_queue(ring->netdev,
2758                                             &ring->q_vector->affinity_mask,
2759                                             ring->queue_index);
2760         } else if (alloc_cpumask_var(&mask, GFP_KERNEL)) {
2761                 /* Disable XPS to allow selection based on TC */
2762                 bitmap_zero(cpumask_bits(mask), nr_cpumask_bits);
2763                 netif_set_xps_queue(ring->netdev, mask, ring->queue_index);
2764                 free_cpumask_var(mask);
2765         }
2766
2767         /* schedule our worker thread which will take care of
2768          * applying the new filter changes
2769          */
2770         i40e_service_event_schedule(vsi->back);
2771 }
2772
2773 /**
2774  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2775  * @ring: The Tx ring to configure
2776  *
2777  * Configure the Tx descriptor ring in the HMC context.
2778  **/
2779 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2780 {
2781         struct i40e_vsi *vsi = ring->vsi;
2782         u16 pf_q = vsi->base_queue + ring->queue_index;
2783         struct i40e_hw *hw = &vsi->back->hw;
2784         struct i40e_hmc_obj_txq tx_ctx;
2785         i40e_status err = 0;
2786         u32 qtx_ctl = 0;
2787
2788         /* some ATR related tx ring init */
2789         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2790                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2791                 ring->atr_count = 0;
2792         } else {
2793                 ring->atr_sample_rate = 0;
2794         }
2795
2796         /* configure XPS */
2797         i40e_config_xps_tx_ring(ring);
2798
2799         /* clear the context structure first */
2800         memset(&tx_ctx, 0, sizeof(tx_ctx));
2801
2802         tx_ctx.new_context = 1;
2803         tx_ctx.base = (ring->dma / 128);
2804         tx_ctx.qlen = ring->count;
2805         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2806                                                I40E_FLAG_FD_ATR_ENABLED));
2807 #ifdef I40E_FCOE
2808         tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2809 #endif
2810         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2811         /* FDIR VSI tx ring can still use RS bit and writebacks */
2812         if (vsi->type != I40E_VSI_FDIR)
2813                 tx_ctx.head_wb_ena = 1;
2814         tx_ctx.head_wb_addr = ring->dma +
2815                               (ring->count * sizeof(struct i40e_tx_desc));
2816
2817         /* As part of VSI creation/update, FW allocates certain
2818          * Tx arbitration queue sets for each TC enabled for
2819          * the VSI. The FW returns the handles to these queue
2820          * sets as part of the response buffer to Add VSI,
2821          * Update VSI, etc. AQ commands. It is expected that
2822          * these queue set handles be associated with the Tx
2823          * queues by the driver as part of the TX queue context
2824          * initialization. This has to be done regardless of
2825          * DCB as by default everything is mapped to TC0.
2826          */
2827         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2828         tx_ctx.rdylist_act = 0;
2829
2830         /* clear the context in the HMC */
2831         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2832         if (err) {
2833                 dev_info(&vsi->back->pdev->dev,
2834                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2835                          ring->queue_index, pf_q, err);
2836                 return -ENOMEM;
2837         }
2838
2839         /* set the context in the HMC */
2840         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2841         if (err) {
2842                 dev_info(&vsi->back->pdev->dev,
2843                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2844                          ring->queue_index, pf_q, err);
2845                 return -ENOMEM;
2846         }
2847
2848         /* Now associate this queue with this PCI function */
2849         if (vsi->type == I40E_VSI_VMDQ2) {
2850                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2851                 qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
2852                            I40E_QTX_CTL_VFVM_INDX_MASK;
2853         } else {
2854                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2855         }
2856
2857         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2858                     I40E_QTX_CTL_PF_INDX_MASK);
2859         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2860         i40e_flush(hw);
2861
2862         /* cache tail off for easier writes later */
2863         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2864
2865         return 0;
2866 }
2867
2868 /**
2869  * i40e_configure_rx_ring - Configure a receive ring context
2870  * @ring: The Rx ring to configure
2871  *
2872  * Configure the Rx descriptor ring in the HMC context.
2873  **/
2874 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2875 {
2876         struct i40e_vsi *vsi = ring->vsi;
2877         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2878         u16 pf_q = vsi->base_queue + ring->queue_index;
2879         struct i40e_hw *hw = &vsi->back->hw;
2880         struct i40e_hmc_obj_rxq rx_ctx;
2881         i40e_status err = 0;
2882
2883         ring->state = 0;
2884
2885         /* clear the context structure first */
2886         memset(&rx_ctx, 0, sizeof(rx_ctx));
2887
2888         ring->rx_buf_len = vsi->rx_buf_len;
2889
2890         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2891
2892         rx_ctx.base = (ring->dma / 128);
2893         rx_ctx.qlen = ring->count;
2894
2895         /* use 32 byte descriptors */
2896         rx_ctx.dsize = 1;
2897
2898         /* descriptor type is always zero
2899          * rx_ctx.dtype = 0;
2900          */
2901         rx_ctx.hsplit_0 = 0;
2902
2903         rx_ctx.rxmax = min_t(u16, vsi->max_frame, chain_len * ring->rx_buf_len);
2904         if (hw->revision_id == 0)
2905                 rx_ctx.lrxqthresh = 0;
2906         else
2907                 rx_ctx.lrxqthresh = 2;
2908         rx_ctx.crcstrip = 1;
2909         rx_ctx.l2tsel = 1;
2910         /* this controls whether VLAN is stripped from inner headers */
2911         rx_ctx.showiv = 0;
2912 #ifdef I40E_FCOE
2913         rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2914 #endif
2915         /* set the prefena field to 1 because the manual says to */
2916         rx_ctx.prefena = 1;
2917
2918         /* clear the context in the HMC */
2919         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2920         if (err) {
2921                 dev_info(&vsi->back->pdev->dev,
2922                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2923                          ring->queue_index, pf_q, err);
2924                 return -ENOMEM;
2925         }
2926
2927         /* set the context in the HMC */
2928         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2929         if (err) {
2930                 dev_info(&vsi->back->pdev->dev,
2931                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2932                          ring->queue_index, pf_q, err);
2933                 return -ENOMEM;
2934         }
2935
2936         /* cache tail for quicker writes, and clear the reg before use */
2937         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2938         writel(0, ring->tail);
2939
2940         i40e_alloc_rx_buffers(ring, I40E_DESC_UNUSED(ring));
2941
2942         return 0;
2943 }
2944
2945 /**
2946  * i40e_vsi_configure_tx - Configure the VSI for Tx
2947  * @vsi: VSI structure describing this set of rings and resources
2948  *
2949  * Configure the Tx VSI for operation.
2950  **/
2951 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2952 {
2953         int err = 0;
2954         u16 i;
2955
2956         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2957                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2958
2959         return err;
2960 }
2961
2962 /**
2963  * i40e_vsi_configure_rx - Configure the VSI for Rx
2964  * @vsi: the VSI being configured
2965  *
2966  * Configure the Rx VSI for operation.
2967  **/
2968 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2969 {
2970         int err = 0;
2971         u16 i;
2972
2973         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2974                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2975                                + ETH_FCS_LEN + VLAN_HLEN;
2976         else
2977                 vsi->max_frame = I40E_RXBUFFER_2048;
2978
2979         vsi->rx_buf_len = I40E_RXBUFFER_2048;
2980
2981 #ifdef I40E_FCOE
2982         /* setup rx buffer for FCoE */
2983         if ((vsi->type == I40E_VSI_FCOE) &&
2984             (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
2985                 vsi->rx_buf_len = I40E_RXBUFFER_3072;
2986                 vsi->max_frame = I40E_RXBUFFER_3072;
2987         }
2988
2989 #endif /* I40E_FCOE */
2990         /* round up for the chip's needs */
2991         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2992                                 BIT_ULL(I40E_RXQ_CTX_DBUFF_SHIFT));
2993
2994         /* set up individual rings */
2995         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2996                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
2997
2998         return err;
2999 }
3000
3001 /**
3002  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
3003  * @vsi: ptr to the VSI
3004  **/
3005 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
3006 {
3007         struct i40e_ring *tx_ring, *rx_ring;
3008         u16 qoffset, qcount;
3009         int i, n;
3010
3011         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
3012                 /* Reset the TC information */
3013                 for (i = 0; i < vsi->num_queue_pairs; i++) {
3014                         rx_ring = vsi->rx_rings[i];
3015                         tx_ring = vsi->tx_rings[i];
3016                         rx_ring->dcb_tc = 0;
3017                         tx_ring->dcb_tc = 0;
3018                 }
3019         }
3020
3021         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
3022                 if (!(vsi->tc_config.enabled_tc & BIT_ULL(n)))
3023                         continue;
3024
3025                 qoffset = vsi->tc_config.tc_info[n].qoffset;
3026                 qcount = vsi->tc_config.tc_info[n].qcount;
3027                 for (i = qoffset; i < (qoffset + qcount); i++) {
3028                         rx_ring = vsi->rx_rings[i];
3029                         tx_ring = vsi->tx_rings[i];
3030                         rx_ring->dcb_tc = n;
3031                         tx_ring->dcb_tc = n;
3032                 }
3033         }
3034 }
3035
3036 /**
3037  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
3038  * @vsi: ptr to the VSI
3039  **/
3040 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
3041 {
3042         if (vsi->netdev)
3043                 i40e_set_rx_mode(vsi->netdev);
3044 }
3045
3046 /**
3047  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
3048  * @vsi: Pointer to the targeted VSI
3049  *
3050  * This function replays the hlist on the hw where all the SB Flow Director
3051  * filters were saved.
3052  **/
3053 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
3054 {
3055         struct i40e_fdir_filter *filter;
3056         struct i40e_pf *pf = vsi->back;
3057         struct hlist_node *node;
3058
3059         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
3060                 return;
3061
3062         hlist_for_each_entry_safe(filter, node,
3063                                   &pf->fdir_filter_list, fdir_node) {
3064                 i40e_add_del_fdir(vsi, filter, true);
3065         }
3066 }
3067
3068 /**
3069  * i40e_vsi_configure - Set up the VSI for action
3070  * @vsi: the VSI being configured
3071  **/
3072 static int i40e_vsi_configure(struct i40e_vsi *vsi)
3073 {
3074         int err;
3075
3076         i40e_set_vsi_rx_mode(vsi);
3077         i40e_restore_vlan(vsi);
3078         i40e_vsi_config_dcb_rings(vsi);
3079         err = i40e_vsi_configure_tx(vsi);
3080         if (!err)
3081                 err = i40e_vsi_configure_rx(vsi);
3082
3083         return err;
3084 }
3085
3086 /**
3087  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
3088  * @vsi: the VSI being configured
3089  **/
3090 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
3091 {
3092         struct i40e_pf *pf = vsi->back;
3093         struct i40e_hw *hw = &pf->hw;
3094         u16 vector;
3095         int i, q;
3096         u32 qp;
3097
3098         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
3099          * and PFINT_LNKLSTn registers, e.g.:
3100          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
3101          */
3102         qp = vsi->base_queue;
3103         vector = vsi->base_vector;
3104         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
3105                 struct i40e_q_vector *q_vector = vsi->q_vectors[i];
3106
3107                 q_vector->itr_countdown = ITR_COUNTDOWN_START;
3108                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_rings[i]->rx_itr_setting);
3109                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
3110                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
3111                      q_vector->rx.itr);
3112                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_rings[i]->tx_itr_setting);
3113                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
3114                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
3115                      q_vector->tx.itr);
3116                 wr32(hw, I40E_PFINT_RATEN(vector - 1),
3117                      INTRL_USEC_TO_REG(vsi->int_rate_limit));
3118
3119                 /* Linked list for the queuepairs assigned to this vector */
3120                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
3121                 for (q = 0; q < q_vector->num_ringpairs; q++) {
3122                         u32 val;
3123
3124                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
3125                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
3126                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
3127                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
3128                               (I40E_QUEUE_TYPE_TX
3129                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
3130
3131                         wr32(hw, I40E_QINT_RQCTL(qp), val);
3132
3133                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
3134                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
3135                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
3136                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
3137                               (I40E_QUEUE_TYPE_RX
3138                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3139
3140                         /* Terminate the linked list */
3141                         if (q == (q_vector->num_ringpairs - 1))
3142                                 val |= (I40E_QUEUE_END_OF_LIST
3143                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3144
3145                         wr32(hw, I40E_QINT_TQCTL(qp), val);
3146                         qp++;
3147                 }
3148         }
3149
3150         i40e_flush(hw);
3151 }
3152
3153 /**
3154  * i40e_enable_misc_int_causes - enable the non-queue interrupts
3155  * @hw: ptr to the hardware info
3156  **/
3157 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
3158 {
3159         struct i40e_hw *hw = &pf->hw;
3160         u32 val;
3161
3162         /* clear things first */
3163         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
3164         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
3165
3166         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
3167               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
3168               I40E_PFINT_ICR0_ENA_GRST_MASK          |
3169               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
3170               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
3171               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
3172               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
3173               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3174
3175         if (pf->flags & I40E_FLAG_IWARP_ENABLED)
3176                 val |= I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3177
3178         if (pf->flags & I40E_FLAG_PTP)
3179                 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3180
3181         wr32(hw, I40E_PFINT_ICR0_ENA, val);
3182
3183         /* SW_ITR_IDX = 0, but don't change INTENA */
3184         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
3185                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
3186
3187         /* OTHER_ITR_IDX = 0 */
3188         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
3189 }
3190
3191 /**
3192  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
3193  * @vsi: the VSI being configured
3194  **/
3195 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
3196 {
3197         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3198         struct i40e_pf *pf = vsi->back;
3199         struct i40e_hw *hw = &pf->hw;
3200         u32 val;
3201
3202         /* set the ITR configuration */
3203         q_vector->itr_countdown = ITR_COUNTDOWN_START;
3204         q_vector->rx.itr = ITR_TO_REG(vsi->rx_rings[0]->rx_itr_setting);
3205         q_vector->rx.latency_range = I40E_LOW_LATENCY;
3206         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
3207         q_vector->tx.itr = ITR_TO_REG(vsi->tx_rings[0]->tx_itr_setting);
3208         q_vector->tx.latency_range = I40E_LOW_LATENCY;
3209         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
3210
3211         i40e_enable_misc_int_causes(pf);
3212
3213         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
3214         wr32(hw, I40E_PFINT_LNKLST0, 0);
3215
3216         /* Associate the queue pair to the vector and enable the queue int */
3217         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
3218               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
3219               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3220
3221         wr32(hw, I40E_QINT_RQCTL(0), val);
3222
3223         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
3224               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3225               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3226
3227         wr32(hw, I40E_QINT_TQCTL(0), val);
3228         i40e_flush(hw);
3229 }
3230
3231 /**
3232  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
3233  * @pf: board private structure
3234  **/
3235 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
3236 {
3237         struct i40e_hw *hw = &pf->hw;
3238
3239         wr32(hw, I40E_PFINT_DYN_CTL0,
3240              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
3241         i40e_flush(hw);
3242 }
3243
3244 /**
3245  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
3246  * @pf: board private structure
3247  * @clearpba: true when all pending interrupt events should be cleared
3248  **/
3249 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf, bool clearpba)
3250 {
3251         struct i40e_hw *hw = &pf->hw;
3252         u32 val;
3253
3254         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
3255               (clearpba ? I40E_PFINT_DYN_CTL0_CLEARPBA_MASK : 0) |
3256               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
3257
3258         wr32(hw, I40E_PFINT_DYN_CTL0, val);
3259         i40e_flush(hw);
3260 }
3261
3262 /**
3263  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
3264  * @irq: interrupt number
3265  * @data: pointer to a q_vector
3266  **/
3267 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
3268 {
3269         struct i40e_q_vector *q_vector = data;
3270
3271         if (!q_vector->tx.ring && !q_vector->rx.ring)
3272                 return IRQ_HANDLED;
3273
3274         napi_schedule_irqoff(&q_vector->napi);
3275
3276         return IRQ_HANDLED;
3277 }
3278
3279 /**
3280  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
3281  * @vsi: the VSI being configured
3282  * @basename: name for the vector
3283  *
3284  * Allocates MSI-X vectors and requests interrupts from the kernel.
3285  **/
3286 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
3287 {
3288         int q_vectors = vsi->num_q_vectors;
3289         struct i40e_pf *pf = vsi->back;
3290         int base = vsi->base_vector;
3291         int rx_int_idx = 0;
3292         int tx_int_idx = 0;
3293         int vector, err;
3294
3295         for (vector = 0; vector < q_vectors; vector++) {
3296                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
3297
3298                 if (q_vector->tx.ring && q_vector->rx.ring) {
3299                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3300                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
3301                         tx_int_idx++;
3302                 } else if (q_vector->rx.ring) {
3303                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3304                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
3305                 } else if (q_vector->tx.ring) {
3306                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3307                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
3308                 } else {
3309                         /* skip this unused q_vector */
3310                         continue;
3311                 }
3312                 err = request_irq(pf->msix_entries[base + vector].vector,
3313                                   vsi->irq_handler,
3314                                   0,
3315                                   q_vector->name,
3316                                   q_vector);
3317                 if (err) {
3318                         dev_info(&pf->pdev->dev,
3319                                  "MSIX request_irq failed, error: %d\n", err);
3320                         goto free_queue_irqs;
3321                 }
3322                 /* assign the mask for this irq */
3323                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3324                                       &q_vector->affinity_mask);
3325         }
3326
3327         vsi->irqs_ready = true;
3328         return 0;
3329
3330 free_queue_irqs:
3331         while (vector) {
3332                 vector--;
3333                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3334                                       NULL);
3335                 free_irq(pf->msix_entries[base + vector].vector,
3336                          &(vsi->q_vectors[vector]));
3337         }
3338         return err;
3339 }
3340
3341 /**
3342  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3343  * @vsi: the VSI being un-configured
3344  **/
3345 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3346 {
3347         struct i40e_pf *pf = vsi->back;
3348         struct i40e_hw *hw = &pf->hw;
3349         int base = vsi->base_vector;
3350         int i;
3351
3352         for (i = 0; i < vsi->num_queue_pairs; i++) {
3353                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3354                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3355         }
3356
3357         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3358                 for (i = vsi->base_vector;
3359                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3360                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3361
3362                 i40e_flush(hw);
3363                 for (i = 0; i < vsi->num_q_vectors; i++)
3364                         synchronize_irq(pf->msix_entries[i + base].vector);
3365         } else {
3366                 /* Legacy and MSI mode - this stops all interrupt handling */
3367                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3368                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3369                 i40e_flush(hw);
3370                 synchronize_irq(pf->pdev->irq);
3371         }
3372 }
3373
3374 /**
3375  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3376  * @vsi: the VSI being configured
3377  **/
3378 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3379 {
3380         struct i40e_pf *pf = vsi->back;
3381         int i;
3382
3383         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3384                 for (i = 0; i < vsi->num_q_vectors; i++)
3385                         i40e_irq_dynamic_enable(vsi, i);
3386         } else {
3387                 i40e_irq_dynamic_enable_icr0(pf, true);
3388         }
3389
3390         i40e_flush(&pf->hw);
3391         return 0;
3392 }
3393
3394 /**
3395  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3396  * @pf: board private structure
3397  **/
3398 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3399 {
3400         /* Disable ICR 0 */
3401         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3402         i40e_flush(&pf->hw);
3403 }
3404
3405 /**
3406  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3407  * @irq: interrupt number
3408  * @data: pointer to a q_vector
3409  *
3410  * This is the handler used for all MSI/Legacy interrupts, and deals
3411  * with both queue and non-queue interrupts.  This is also used in
3412  * MSIX mode to handle the non-queue interrupts.
3413  **/
3414 static irqreturn_t i40e_intr(int irq, void *data)
3415 {
3416         struct i40e_pf *pf = (struct i40e_pf *)data;
3417         struct i40e_hw *hw = &pf->hw;
3418         irqreturn_t ret = IRQ_NONE;
3419         u32 icr0, icr0_remaining;
3420         u32 val, ena_mask;
3421
3422         icr0 = rd32(hw, I40E_PFINT_ICR0);
3423         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3424
3425         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3426         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3427                 goto enable_intr;
3428
3429         /* if interrupt but no bits showing, must be SWINT */
3430         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3431             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3432                 pf->sw_int_count++;
3433
3434         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
3435             (ena_mask & I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK)) {
3436                 ena_mask &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3437                 icr0 &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3438                 dev_info(&pf->pdev->dev, "cleared PE_CRITERR\n");
3439         }
3440
3441         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3442         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3443                 struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
3444                 struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3445
3446                 /* We do not have a way to disarm Queue causes while leaving
3447                  * interrupt enabled for all other causes, ideally
3448                  * interrupt should be disabled while we are in NAPI but
3449                  * this is not a performance path and napi_schedule()
3450                  * can deal with rescheduling.
3451                  */
3452                 if (!test_bit(__I40E_DOWN, &pf->state))
3453                         napi_schedule_irqoff(&q_vector->napi);
3454         }
3455
3456         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3457                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3458                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3459                 i40e_debug(&pf->hw, I40E_DEBUG_NVM, "AdminQ event\n");
3460         }
3461
3462         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3463                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3464                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3465         }
3466
3467         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3468                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3469                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3470         }
3471
3472         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3473                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3474                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3475                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3476                 val = rd32(hw, I40E_GLGEN_RSTAT);
3477                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3478                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3479                 if (val == I40E_RESET_CORER) {
3480                         pf->corer_count++;
3481                 } else if (val == I40E_RESET_GLOBR) {
3482                         pf->globr_count++;
3483                 } else if (val == I40E_RESET_EMPR) {
3484                         pf->empr_count++;
3485                         set_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state);
3486                 }
3487         }
3488
3489         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3490                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3491                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3492                 dev_info(&pf->pdev->dev, "HMC error info 0x%x, HMC error data 0x%x\n",
3493                          rd32(hw, I40E_PFHMC_ERRORINFO),
3494                          rd32(hw, I40E_PFHMC_ERRORDATA));
3495         }
3496
3497         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3498                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3499
3500                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3501                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3502                         i40e_ptp_tx_hwtstamp(pf);
3503                 }
3504         }
3505
3506         /* If a critical error is pending we have no choice but to reset the
3507          * device.
3508          * Report and mask out any remaining unexpected interrupts.
3509          */
3510         icr0_remaining = icr0 & ena_mask;
3511         if (icr0_remaining) {
3512                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3513                          icr0_remaining);
3514                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3515                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3516                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3517                         dev_info(&pf->pdev->dev, "device will be reset\n");
3518                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3519                         i40e_service_event_schedule(pf);
3520                 }
3521                 ena_mask &= ~icr0_remaining;
3522         }
3523         ret = IRQ_HANDLED;
3524
3525 enable_intr:
3526         /* re-enable interrupt causes */
3527         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3528         if (!test_bit(__I40E_DOWN, &pf->state)) {
3529                 i40e_service_event_schedule(pf);
3530                 i40e_irq_dynamic_enable_icr0(pf, false);
3531         }
3532
3533         return ret;
3534 }
3535
3536 /**
3537  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3538  * @tx_ring:  tx ring to clean
3539  * @budget:   how many cleans we're allowed
3540  *
3541  * Returns true if there's any budget left (e.g. the clean is finished)
3542  **/
3543 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3544 {
3545         struct i40e_vsi *vsi = tx_ring->vsi;
3546         u16 i = tx_ring->next_to_clean;
3547         struct i40e_tx_buffer *tx_buf;
3548         struct i40e_tx_desc *tx_desc;
3549
3550         tx_buf = &tx_ring->tx_bi[i];
3551         tx_desc = I40E_TX_DESC(tx_ring, i);
3552         i -= tx_ring->count;
3553
3554         do {
3555                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3556
3557                 /* if next_to_watch is not set then there is no work pending */
3558                 if (!eop_desc)
3559                         break;
3560
3561                 /* prevent any other reads prior to eop_desc */
3562                 read_barrier_depends();
3563
3564                 /* if the descriptor isn't done, no work yet to do */
3565                 if (!(eop_desc->cmd_type_offset_bsz &
3566                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3567                         break;
3568
3569                 /* clear next_to_watch to prevent false hangs */
3570                 tx_buf->next_to_watch = NULL;
3571
3572                 tx_desc->buffer_addr = 0;
3573                 tx_desc->cmd_type_offset_bsz = 0;
3574                 /* move past filter desc */
3575                 tx_buf++;
3576                 tx_desc++;
3577                 i++;
3578                 if (unlikely(!i)) {
3579                         i -= tx_ring->count;
3580                         tx_buf = tx_ring->tx_bi;
3581                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3582                 }
3583                 /* unmap skb header data */
3584                 dma_unmap_single(tx_ring->dev,
3585                                  dma_unmap_addr(tx_buf, dma),
3586                                  dma_unmap_len(tx_buf, len),
3587                                  DMA_TO_DEVICE);
3588                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3589                         kfree(tx_buf->raw_buf);
3590
3591                 tx_buf->raw_buf = NULL;
3592                 tx_buf->tx_flags = 0;
3593                 tx_buf->next_to_watch = NULL;
3594                 dma_unmap_len_set(tx_buf, len, 0);
3595                 tx_desc->buffer_addr = 0;
3596                 tx_desc->cmd_type_offset_bsz = 0;
3597
3598                 /* move us past the eop_desc for start of next FD desc */
3599                 tx_buf++;
3600                 tx_desc++;
3601                 i++;
3602                 if (unlikely(!i)) {
3603                         i -= tx_ring->count;
3604                         tx_buf = tx_ring->tx_bi;
3605                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3606                 }
3607
3608                 /* update budget accounting */
3609                 budget--;
3610         } while (likely(budget));
3611
3612         i += tx_ring->count;
3613         tx_ring->next_to_clean = i;
3614
3615         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED)
3616                 i40e_irq_dynamic_enable(vsi, tx_ring->q_vector->v_idx);
3617
3618         return budget > 0;
3619 }
3620
3621 /**
3622  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3623  * @irq: interrupt number
3624  * @data: pointer to a q_vector
3625  **/
3626 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3627 {
3628         struct i40e_q_vector *q_vector = data;
3629         struct i40e_vsi *vsi;
3630
3631         if (!q_vector->tx.ring)
3632                 return IRQ_HANDLED;
3633
3634         vsi = q_vector->tx.ring->vsi;
3635         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3636
3637         return IRQ_HANDLED;
3638 }
3639
3640 /**
3641  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3642  * @vsi: the VSI being configured
3643  * @v_idx: vector index
3644  * @qp_idx: queue pair index
3645  **/
3646 static void i40e_map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3647 {
3648         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3649         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3650         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3651
3652         tx_ring->q_vector = q_vector;
3653         tx_ring->next = q_vector->tx.ring;
3654         q_vector->tx.ring = tx_ring;
3655         q_vector->tx.count++;
3656
3657         rx_ring->q_vector = q_vector;
3658         rx_ring->next = q_vector->rx.ring;
3659         q_vector->rx.ring = rx_ring;
3660         q_vector->rx.count++;
3661 }
3662
3663 /**
3664  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3665  * @vsi: the VSI being configured
3666  *
3667  * This function maps descriptor rings to the queue-specific vectors
3668  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3669  * one vector per queue pair, but on a constrained vector budget, we
3670  * group the queue pairs as "efficiently" as possible.
3671  **/
3672 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3673 {
3674         int qp_remaining = vsi->num_queue_pairs;
3675         int q_vectors = vsi->num_q_vectors;
3676         int num_ringpairs;
3677         int v_start = 0;
3678         int qp_idx = 0;
3679
3680         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3681          * group them so there are multiple queues per vector.
3682          * It is also important to go through all the vectors available to be
3683          * sure that if we don't use all the vectors, that the remaining vectors
3684          * are cleared. This is especially important when decreasing the
3685          * number of queues in use.
3686          */
3687         for (; v_start < q_vectors; v_start++) {
3688                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3689
3690                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3691
3692                 q_vector->num_ringpairs = num_ringpairs;
3693
3694                 q_vector->rx.count = 0;
3695                 q_vector->tx.count = 0;
3696                 q_vector->rx.ring = NULL;
3697                 q_vector->tx.ring = NULL;
3698
3699                 while (num_ringpairs--) {
3700                         i40e_map_vector_to_qp(vsi, v_start, qp_idx);
3701                         qp_idx++;
3702                         qp_remaining--;
3703                 }
3704         }
3705 }
3706
3707 /**
3708  * i40e_vsi_request_irq - Request IRQ from the OS
3709  * @vsi: the VSI being configured
3710  * @basename: name for the vector
3711  **/
3712 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3713 {
3714         struct i40e_pf *pf = vsi->back;
3715         int err;
3716
3717         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3718                 err = i40e_vsi_request_irq_msix(vsi, basename);
3719         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3720                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3721                                   pf->int_name, pf);
3722         else
3723                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3724                                   pf->int_name, pf);
3725
3726         if (err)
3727                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3728
3729         return err;
3730 }
3731
3732 #ifdef CONFIG_NET_POLL_CONTROLLER
3733 /**
3734  * i40e_netpoll - A Polling 'interrupt' handler
3735  * @netdev: network interface device structure
3736  *
3737  * This is used by netconsole to send skbs without having to re-enable
3738  * interrupts.  It's not called while the normal interrupt routine is executing.
3739  **/
3740 #ifdef I40E_FCOE
3741 void i40e_netpoll(struct net_device *netdev)
3742 #else
3743 static void i40e_netpoll(struct net_device *netdev)
3744 #endif
3745 {
3746         struct i40e_netdev_priv *np = netdev_priv(netdev);
3747         struct i40e_vsi *vsi = np->vsi;
3748         struct i40e_pf *pf = vsi->back;
3749         int i;
3750
3751         /* if interface is down do nothing */
3752         if (test_bit(__I40E_DOWN, &vsi->state))
3753                 return;
3754
3755         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3756                 for (i = 0; i < vsi->num_q_vectors; i++)
3757                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3758         } else {
3759                 i40e_intr(pf->pdev->irq, netdev);
3760         }
3761 }
3762 #endif
3763
3764 /**
3765  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3766  * @pf: the PF being configured
3767  * @pf_q: the PF queue
3768  * @enable: enable or disable state of the queue
3769  *
3770  * This routine will wait for the given Tx queue of the PF to reach the
3771  * enabled or disabled state.
3772  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3773  * multiple retries; else will return 0 in case of success.
3774  **/
3775 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3776 {
3777         int i;
3778         u32 tx_reg;
3779
3780         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3781                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3782                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3783                         break;
3784
3785                 usleep_range(10, 20);
3786         }
3787         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3788                 return -ETIMEDOUT;
3789
3790         return 0;
3791 }
3792
3793 /**
3794  * i40e_vsi_control_tx - Start or stop a VSI's rings
3795  * @vsi: the VSI being configured
3796  * @enable: start or stop the rings
3797  **/
3798 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3799 {
3800         struct i40e_pf *pf = vsi->back;
3801         struct i40e_hw *hw = &pf->hw;
3802         int i, j, pf_q, ret = 0;
3803         u32 tx_reg;
3804
3805         pf_q = vsi->base_queue;
3806         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3807
3808                 /* warn the TX unit of coming changes */
3809                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3810                 if (!enable)
3811                         usleep_range(10, 20);
3812
3813                 for (j = 0; j < 50; j++) {
3814                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3815                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3816                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3817                                 break;
3818                         usleep_range(1000, 2000);
3819                 }
3820                 /* Skip if the queue is already in the requested state */
3821                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3822                         continue;
3823
3824                 /* turn on/off the queue */
3825                 if (enable) {
3826                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3827                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3828                 } else {
3829                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3830                 }
3831
3832                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3833                 /* No waiting for the Tx queue to disable */
3834                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3835                         continue;
3836
3837                 /* wait for the change to finish */
3838                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3839                 if (ret) {
3840                         dev_info(&pf->pdev->dev,
3841                                  "VSI seid %d Tx ring %d %sable timeout\n",
3842                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3843                         break;
3844                 }
3845         }
3846
3847         if (hw->revision_id == 0)
3848                 mdelay(50);
3849         return ret;
3850 }
3851
3852 /**
3853  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
3854  * @pf: the PF being configured
3855  * @pf_q: the PF queue
3856  * @enable: enable or disable state of the queue
3857  *
3858  * This routine will wait for the given Rx queue of the PF to reach the
3859  * enabled or disabled state.
3860  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3861  * multiple retries; else will return 0 in case of success.
3862  **/
3863 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3864 {
3865         int i;
3866         u32 rx_reg;
3867
3868         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3869                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
3870                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3871                         break;
3872
3873                 usleep_range(10, 20);
3874         }
3875         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3876                 return -ETIMEDOUT;
3877
3878         return 0;
3879 }
3880
3881 /**
3882  * i40e_vsi_control_rx - Start or stop a VSI's rings
3883  * @vsi: the VSI being configured
3884  * @enable: start or stop the rings
3885  **/
3886 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3887 {
3888         struct i40e_pf *pf = vsi->back;
3889         struct i40e_hw *hw = &pf->hw;
3890         int i, j, pf_q, ret = 0;
3891         u32 rx_reg;
3892
3893         pf_q = vsi->base_queue;
3894         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3895                 for (j = 0; j < 50; j++) {
3896                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3897                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3898                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3899                                 break;
3900                         usleep_range(1000, 2000);
3901                 }
3902
3903                 /* Skip if the queue is already in the requested state */
3904                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3905                         continue;
3906
3907                 /* turn on/off the queue */
3908                 if (enable)
3909                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3910                 else
3911                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3912                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3913                 /* No waiting for the Tx queue to disable */
3914                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3915                         continue;
3916
3917                 /* wait for the change to finish */
3918                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
3919                 if (ret) {
3920                         dev_info(&pf->pdev->dev,
3921                                  "VSI seid %d Rx ring %d %sable timeout\n",
3922                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3923                         break;
3924                 }
3925         }
3926
3927         return ret;
3928 }
3929
3930 /**
3931  * i40e_vsi_control_rings - Start or stop a VSI's rings
3932  * @vsi: the VSI being configured
3933  * @enable: start or stop the rings
3934  **/
3935 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3936 {
3937         int ret = 0;
3938
3939         /* do rx first for enable and last for disable */
3940         if (request) {
3941                 ret = i40e_vsi_control_rx(vsi, request);
3942                 if (ret)
3943                         return ret;
3944                 ret = i40e_vsi_control_tx(vsi, request);
3945         } else {
3946                 /* Ignore return value, we need to shutdown whatever we can */
3947                 i40e_vsi_control_tx(vsi, request);
3948                 i40e_vsi_control_rx(vsi, request);
3949         }
3950
3951         return ret;
3952 }
3953
3954 /**
3955  * i40e_vsi_free_irq - Free the irq association with the OS
3956  * @vsi: the VSI being configured
3957  **/
3958 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3959 {
3960         struct i40e_pf *pf = vsi->back;
3961         struct i40e_hw *hw = &pf->hw;
3962         int base = vsi->base_vector;
3963         u32 val, qp;
3964         int i;
3965
3966         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3967                 if (!vsi->q_vectors)
3968                         return;
3969
3970                 if (!vsi->irqs_ready)
3971                         return;
3972
3973                 vsi->irqs_ready = false;
3974                 for (i = 0; i < vsi->num_q_vectors; i++) {
3975                         u16 vector = i + base;
3976
3977                         /* free only the irqs that were actually requested */
3978                         if (!vsi->q_vectors[i] ||
3979                             !vsi->q_vectors[i]->num_ringpairs)
3980                                 continue;
3981
3982                         /* clear the affinity_mask in the IRQ descriptor */
3983                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
3984                                               NULL);
3985                         synchronize_irq(pf->msix_entries[vector].vector);
3986                         free_irq(pf->msix_entries[vector].vector,
3987                                  vsi->q_vectors[i]);
3988
3989                         /* Tear down the interrupt queue link list
3990                          *
3991                          * We know that they come in pairs and always
3992                          * the Rx first, then the Tx.  To clear the
3993                          * link list, stick the EOL value into the
3994                          * next_q field of the registers.
3995                          */
3996                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
3997                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3998                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3999                         val |= I40E_QUEUE_END_OF_LIST
4000                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4001                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
4002
4003                         while (qp != I40E_QUEUE_END_OF_LIST) {
4004                                 u32 next;
4005
4006                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4007
4008                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4009                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4010                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4011                                          I40E_QINT_RQCTL_INTEVENT_MASK);
4012
4013                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4014                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4015
4016                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4017
4018                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4019
4020                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
4021                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
4022
4023                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4024                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4025                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4026                                          I40E_QINT_TQCTL_INTEVENT_MASK);
4027
4028                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4029                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4030
4031                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4032                                 qp = next;
4033                         }
4034                 }
4035         } else {
4036                 free_irq(pf->pdev->irq, pf);
4037
4038                 val = rd32(hw, I40E_PFINT_LNKLST0);
4039                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4040                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4041                 val |= I40E_QUEUE_END_OF_LIST
4042                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
4043                 wr32(hw, I40E_PFINT_LNKLST0, val);
4044
4045                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4046                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4047                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4048                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4049                          I40E_QINT_RQCTL_INTEVENT_MASK);
4050
4051                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4052                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4053
4054                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4055
4056                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4057
4058                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4059                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4060                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4061                          I40E_QINT_TQCTL_INTEVENT_MASK);
4062
4063                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4064                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4065
4066                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4067         }
4068 }
4069
4070 /**
4071  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
4072  * @vsi: the VSI being configured
4073  * @v_idx: Index of vector to be freed
4074  *
4075  * This function frees the memory allocated to the q_vector.  In addition if
4076  * NAPI is enabled it will delete any references to the NAPI struct prior
4077  * to freeing the q_vector.
4078  **/
4079 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
4080 {
4081         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
4082         struct i40e_ring *ring;
4083
4084         if (!q_vector)
4085                 return;
4086
4087         /* disassociate q_vector from rings */
4088         i40e_for_each_ring(ring, q_vector->tx)
4089                 ring->q_vector = NULL;
4090
4091         i40e_for_each_ring(ring, q_vector->rx)
4092                 ring->q_vector = NULL;
4093
4094         /* only VSI w/ an associated netdev is set up w/ NAPI */
4095         if (vsi->netdev)
4096                 netif_napi_del(&q_vector->napi);
4097
4098         vsi->q_vectors[v_idx] = NULL;
4099
4100         kfree_rcu(q_vector, rcu);
4101 }
4102
4103 /**
4104  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
4105  * @vsi: the VSI being un-configured
4106  *
4107  * This frees the memory allocated to the q_vectors and
4108  * deletes references to the NAPI struct.
4109  **/
4110 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
4111 {
4112         int v_idx;
4113
4114         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
4115                 i40e_free_q_vector(vsi, v_idx);
4116 }
4117
4118 /**
4119  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
4120  * @pf: board private structure
4121  **/
4122 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
4123 {
4124         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
4125         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4126                 pci_disable_msix(pf->pdev);
4127                 kfree(pf->msix_entries);
4128                 pf->msix_entries = NULL;
4129                 kfree(pf->irq_pile);
4130                 pf->irq_pile = NULL;
4131         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
4132                 pci_disable_msi(pf->pdev);
4133         }
4134         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
4135 }
4136
4137 /**
4138  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
4139  * @pf: board private structure
4140  *
4141  * We go through and clear interrupt specific resources and reset the structure
4142  * to pre-load conditions
4143  **/
4144 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
4145 {
4146         int i;
4147
4148         i40e_stop_misc_vector(pf);
4149         if (pf->flags & I40E_FLAG_MSIX_ENABLED && pf->msix_entries) {
4150                 synchronize_irq(pf->msix_entries[0].vector);
4151                 free_irq(pf->msix_entries[0].vector, pf);
4152         }
4153
4154         i40e_put_lump(pf->irq_pile, pf->iwarp_base_vector,
4155                       I40E_IWARP_IRQ_PILE_ID);
4156
4157         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
4158         for (i = 0; i < pf->num_alloc_vsi; i++)
4159                 if (pf->vsi[i])
4160                         i40e_vsi_free_q_vectors(pf->vsi[i]);
4161         i40e_reset_interrupt_capability(pf);
4162 }
4163
4164 /**
4165  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
4166  * @vsi: the VSI being configured
4167  **/
4168 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
4169 {
4170         int q_idx;
4171
4172         if (!vsi->netdev)
4173                 return;
4174
4175         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4176                 napi_enable(&vsi->q_vectors[q_idx]->napi);
4177 }
4178
4179 /**
4180  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
4181  * @vsi: the VSI being configured
4182  **/
4183 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
4184 {
4185         int q_idx;
4186
4187         if (!vsi->netdev)
4188                 return;
4189
4190         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4191                 napi_disable(&vsi->q_vectors[q_idx]->napi);
4192 }
4193
4194 /**
4195  * i40e_vsi_close - Shut down a VSI
4196  * @vsi: the vsi to be quelled
4197  **/
4198 static void i40e_vsi_close(struct i40e_vsi *vsi)
4199 {
4200         bool reset = false;
4201
4202         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
4203                 i40e_down(vsi);
4204         i40e_vsi_free_irq(vsi);
4205         i40e_vsi_free_tx_resources(vsi);
4206         i40e_vsi_free_rx_resources(vsi);
4207         vsi->current_netdev_flags = 0;
4208         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
4209                 reset = true;
4210         i40e_notify_client_of_netdev_close(vsi, reset);
4211 }
4212
4213 /**
4214  * i40e_quiesce_vsi - Pause a given VSI
4215  * @vsi: the VSI being paused
4216  **/
4217 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
4218 {
4219         if (test_bit(__I40E_DOWN, &vsi->state))
4220                 return;
4221
4222         /* No need to disable FCoE VSI when Tx suspended */
4223         if ((test_bit(__I40E_PORT_TX_SUSPENDED, &vsi->back->state)) &&
4224             vsi->type == I40E_VSI_FCOE) {
4225                 dev_dbg(&vsi->back->pdev->dev,
4226                          "VSI seid %d skipping FCoE VSI disable\n", vsi->seid);
4227                 return;
4228         }
4229
4230         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
4231         if (vsi->netdev && netif_running(vsi->netdev))
4232                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
4233         else
4234                 i40e_vsi_close(vsi);
4235 }
4236
4237 /**
4238  * i40e_unquiesce_vsi - Resume a given VSI
4239  * @vsi: the VSI being resumed
4240  **/
4241 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
4242 {
4243         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
4244                 return;
4245
4246         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
4247         if (vsi->netdev && netif_running(vsi->netdev))
4248                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
4249         else
4250                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
4251 }
4252
4253 /**
4254  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
4255  * @pf: the PF
4256  **/
4257 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
4258 {
4259         int v;
4260
4261         for (v = 0; v < pf->num_alloc_vsi; v++) {
4262                 if (pf->vsi[v])
4263                         i40e_quiesce_vsi(pf->vsi[v]);
4264         }
4265 }
4266
4267 /**
4268  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
4269  * @pf: the PF
4270  **/
4271 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
4272 {
4273         int v;
4274
4275         for (v = 0; v < pf->num_alloc_vsi; v++) {
4276                 if (pf->vsi[v])
4277                         i40e_unquiesce_vsi(pf->vsi[v]);
4278         }
4279 }
4280
4281 #ifdef CONFIG_I40E_DCB
4282 /**
4283  * i40e_vsi_wait_queues_disabled - Wait for VSI's queues to be disabled
4284  * @vsi: the VSI being configured
4285  *
4286  * This function waits for the given VSI's queues to be disabled.
4287  **/
4288 static int i40e_vsi_wait_queues_disabled(struct i40e_vsi *vsi)
4289 {
4290         struct i40e_pf *pf = vsi->back;
4291         int i, pf_q, ret;
4292
4293         pf_q = vsi->base_queue;
4294         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4295                 /* Check and wait for the disable status of the queue */
4296                 ret = i40e_pf_txq_wait(pf, pf_q, false);
4297                 if (ret) {
4298                         dev_info(&pf->pdev->dev,
4299                                  "VSI seid %d Tx ring %d disable timeout\n",
4300                                  vsi->seid, pf_q);
4301                         return ret;
4302                 }
4303         }
4304
4305         pf_q = vsi->base_queue;
4306         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4307                 /* Check and wait for the disable status of the queue */
4308                 ret = i40e_pf_rxq_wait(pf, pf_q, false);
4309                 if (ret) {
4310                         dev_info(&pf->pdev->dev,
4311                                  "VSI seid %d Rx ring %d disable timeout\n",
4312                                  vsi->seid, pf_q);
4313                         return ret;
4314                 }
4315         }
4316
4317         return 0;
4318 }
4319
4320 /**
4321  * i40e_pf_wait_queues_disabled - Wait for all queues of PF VSIs to be disabled
4322  * @pf: the PF
4323  *
4324  * This function waits for the queues to be in disabled state for all the
4325  * VSIs that are managed by this PF.
4326  **/
4327 static int i40e_pf_wait_queues_disabled(struct i40e_pf *pf)
4328 {
4329         int v, ret = 0;
4330
4331         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4332                 /* No need to wait for FCoE VSI queues */
4333                 if (pf->vsi[v] && pf->vsi[v]->type != I40E_VSI_FCOE) {
4334                         ret = i40e_vsi_wait_queues_disabled(pf->vsi[v]);
4335                         if (ret)
4336                                 break;
4337                 }
4338         }
4339
4340         return ret;
4341 }
4342
4343 #endif
4344
4345 /**
4346  * i40e_detect_recover_hung_queue - Function to detect and recover hung_queue
4347  * @q_idx: TX queue number
4348  * @vsi: Pointer to VSI struct
4349  *
4350  * This function checks specified queue for given VSI. Detects hung condition.
4351  * Sets hung bit since it is two step process. Before next run of service task
4352  * if napi_poll runs, it reset 'hung' bit for respective q_vector. If not,
4353  * hung condition remain unchanged and during subsequent run, this function
4354  * issues SW interrupt to recover from hung condition.
4355  **/
4356 static void i40e_detect_recover_hung_queue(int q_idx, struct i40e_vsi *vsi)
4357 {
4358         struct i40e_ring *tx_ring = NULL;
4359         struct i40e_pf  *pf;
4360         u32 head, val, tx_pending_hw;
4361         int i;
4362
4363         pf = vsi->back;
4364
4365         /* now that we have an index, find the tx_ring struct */
4366         for (i = 0; i < vsi->num_queue_pairs; i++) {
4367                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
4368                         if (q_idx == vsi->tx_rings[i]->queue_index) {
4369                                 tx_ring = vsi->tx_rings[i];
4370                                 break;
4371                         }
4372                 }
4373         }
4374
4375         if (!tx_ring)
4376                 return;
4377
4378         /* Read interrupt register */
4379         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4380                 val = rd32(&pf->hw,
4381                            I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
4382                                                tx_ring->vsi->base_vector - 1));
4383         else
4384                 val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
4385
4386         head = i40e_get_head(tx_ring);
4387
4388         tx_pending_hw = i40e_get_tx_pending(tx_ring, false);
4389
4390         /* HW is done executing descriptors, updated HEAD write back,
4391          * but SW hasn't processed those descriptors. If interrupt is
4392          * not generated from this point ON, it could result into
4393          * dev_watchdog detecting timeout on those netdev_queue,
4394          * hence proactively trigger SW interrupt.
4395          */
4396         if (tx_pending_hw && (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK))) {
4397                 /* NAPI Poll didn't run and clear since it was set */
4398                 if (test_and_clear_bit(I40E_Q_VECTOR_HUNG_DETECT,
4399                                        &tx_ring->q_vector->hung_detected)) {
4400                         netdev_info(vsi->netdev, "VSI_seid %d, Hung TX queue %d, tx_pending_hw: %d, NTC:0x%x, HWB: 0x%x, NTU: 0x%x, TAIL: 0x%x\n",
4401                                     vsi->seid, q_idx, tx_pending_hw,
4402                                     tx_ring->next_to_clean, head,
4403                                     tx_ring->next_to_use,
4404                                     readl(tx_ring->tail));
4405                         netdev_info(vsi->netdev, "VSI_seid %d, Issuing force_wb for TX queue %d, Interrupt Reg: 0x%x\n",
4406                                     vsi->seid, q_idx, val);
4407                         i40e_force_wb(vsi, tx_ring->q_vector);
4408                 } else {
4409                         /* First Chance - detected possible hung */
4410                         set_bit(I40E_Q_VECTOR_HUNG_DETECT,
4411                                 &tx_ring->q_vector->hung_detected);
4412                 }
4413         }
4414
4415         /* This is the case where we have interrupts missing,
4416          * so the tx_pending in HW will most likely be 0, but we
4417          * will have tx_pending in SW since the WB happened but the
4418          * interrupt got lost.
4419          */
4420         if ((!tx_pending_hw) && i40e_get_tx_pending(tx_ring, true) &&
4421             (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK))) {
4422                 if (napi_reschedule(&tx_ring->q_vector->napi))
4423                         tx_ring->tx_stats.tx_lost_interrupt++;
4424         }
4425 }
4426
4427 /**
4428  * i40e_detect_recover_hung - Function to detect and recover hung_queues
4429  * @pf:  pointer to PF struct
4430  *
4431  * LAN VSI has netdev and netdev has TX queues. This function is to check
4432  * each of those TX queues if they are hung, trigger recovery by issuing
4433  * SW interrupt.
4434  **/
4435 static void i40e_detect_recover_hung(struct i40e_pf *pf)
4436 {
4437         struct net_device *netdev;
4438         struct i40e_vsi *vsi;
4439         int i;
4440
4441         /* Only for LAN VSI */
4442         vsi = pf->vsi[pf->lan_vsi];
4443
4444         if (!vsi)
4445                 return;
4446
4447         /* Make sure, VSI state is not DOWN/RECOVERY_PENDING */
4448         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
4449             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
4450                 return;
4451
4452         /* Make sure type is MAIN VSI */
4453         if (vsi->type != I40E_VSI_MAIN)
4454                 return;
4455
4456         netdev = vsi->netdev;
4457         if (!netdev)
4458                 return;
4459
4460         /* Bail out if netif_carrier is not OK */
4461         if (!netif_carrier_ok(netdev))
4462                 return;
4463
4464         /* Go thru' TX queues for netdev */
4465         for (i = 0; i < netdev->num_tx_queues; i++) {
4466                 struct netdev_queue *q;
4467
4468                 q = netdev_get_tx_queue(netdev, i);
4469                 if (q)
4470                         i40e_detect_recover_hung_queue(i, vsi);
4471         }
4472 }
4473
4474 /**
4475  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
4476  * @pf: pointer to PF
4477  *
4478  * Get TC map for ISCSI PF type that will include iSCSI TC
4479  * and LAN TC.
4480  **/
4481 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
4482 {
4483         struct i40e_dcb_app_priority_table app;
4484         struct i40e_hw *hw = &pf->hw;
4485         u8 enabled_tc = 1; /* TC0 is always enabled */
4486         u8 tc, i;
4487         /* Get the iSCSI APP TLV */
4488         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4489
4490         for (i = 0; i < dcbcfg->numapps; i++) {
4491                 app = dcbcfg->app[i];
4492                 if (app.selector == I40E_APP_SEL_TCPIP &&
4493                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
4494                         tc = dcbcfg->etscfg.prioritytable[app.priority];
4495                         enabled_tc |= BIT(tc);
4496                         break;
4497                 }
4498         }
4499
4500         return enabled_tc;
4501 }
4502
4503 /**
4504  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
4505  * @dcbcfg: the corresponding DCBx configuration structure
4506  *
4507  * Return the number of TCs from given DCBx configuration
4508  **/
4509 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
4510 {
4511         u8 num_tc = 0;
4512         int i;
4513
4514         /* Scan the ETS Config Priority Table to find
4515          * traffic class enabled for a given priority
4516          * and use the traffic class index to get the
4517          * number of traffic classes enabled
4518          */
4519         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4520                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
4521                         num_tc = dcbcfg->etscfg.prioritytable[i];
4522         }
4523
4524         /* Traffic class index starts from zero so
4525          * increment to return the actual count
4526          */
4527         return num_tc + 1;
4528 }
4529
4530 /**
4531  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
4532  * @dcbcfg: the corresponding DCBx configuration structure
4533  *
4534  * Query the current DCB configuration and return the number of
4535  * traffic classes enabled from the given DCBX config
4536  **/
4537 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
4538 {
4539         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
4540         u8 enabled_tc = 1;
4541         u8 i;
4542
4543         for (i = 0; i < num_tc; i++)
4544                 enabled_tc |= BIT(i);
4545
4546         return enabled_tc;
4547 }
4548
4549 /**
4550  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
4551  * @pf: PF being queried
4552  *
4553  * Return number of traffic classes enabled for the given PF
4554  **/
4555 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
4556 {
4557         struct i40e_hw *hw = &pf->hw;
4558         u8 i, enabled_tc;
4559         u8 num_tc = 0;
4560         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4561
4562         /* If DCB is not enabled then always in single TC */
4563         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4564                 return 1;
4565
4566         /* SFP mode will be enabled for all TCs on port */
4567         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4568                 return i40e_dcb_get_num_tc(dcbcfg);
4569
4570         /* MFP mode return count of enabled TCs for this PF */
4571         if (pf->hw.func_caps.iscsi)
4572                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
4573         else
4574                 return 1; /* Only TC0 */
4575
4576         /* At least have TC0 */
4577         enabled_tc = (enabled_tc ? enabled_tc : 0x1);
4578         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4579                 if (enabled_tc & BIT(i))
4580                         num_tc++;
4581         }
4582         return num_tc;
4583 }
4584
4585 /**
4586  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
4587  * @pf: PF being queried
4588  *
4589  * Return a bitmap for first enabled traffic class for this PF.
4590  **/
4591 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
4592 {
4593         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
4594         u8 i = 0;
4595
4596         if (!enabled_tc)
4597                 return 0x1; /* TC0 */
4598
4599         /* Find the first enabled TC */
4600         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4601                 if (enabled_tc & BIT(i))
4602                         break;
4603         }
4604
4605         return BIT(i);
4606 }
4607
4608 /**
4609  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4610  * @pf: PF being queried
4611  *
4612  * Return a bitmap for enabled traffic classes for this PF.
4613  **/
4614 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4615 {
4616         /* If DCB is not enabled for this PF then just return default TC */
4617         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4618                 return i40e_pf_get_default_tc(pf);
4619
4620         /* SFP mode we want PF to be enabled for all TCs */
4621         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4622                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4623
4624         /* MFP enabled and iSCSI PF type */
4625         if (pf->hw.func_caps.iscsi)
4626                 return i40e_get_iscsi_tc_map(pf);
4627         else
4628                 return i40e_pf_get_default_tc(pf);
4629 }
4630
4631 /**
4632  * i40e_vsi_get_bw_info - Query VSI BW Information
4633  * @vsi: the VSI being queried
4634  *
4635  * Returns 0 on success, negative value on failure
4636  **/
4637 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4638 {
4639         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4640         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4641         struct i40e_pf *pf = vsi->back;
4642         struct i40e_hw *hw = &pf->hw;
4643         i40e_status ret;
4644         u32 tc_bw_max;
4645         int i;
4646
4647         /* Get the VSI level BW configuration */
4648         ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4649         if (ret) {
4650                 dev_info(&pf->pdev->dev,
4651                          "couldn't get PF vsi bw config, err %s aq_err %s\n",
4652                          i40e_stat_str(&pf->hw, ret),
4653                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4654                 return -EINVAL;
4655         }
4656
4657         /* Get the VSI level BW configuration per TC */
4658         ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4659                                                NULL);
4660         if (ret) {
4661                 dev_info(&pf->pdev->dev,
4662                          "couldn't get PF vsi ets bw config, err %s aq_err %s\n",
4663                          i40e_stat_str(&pf->hw, ret),
4664                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4665                 return -EINVAL;
4666         }
4667
4668         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4669                 dev_info(&pf->pdev->dev,
4670                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4671                          bw_config.tc_valid_bits,
4672                          bw_ets_config.tc_valid_bits);
4673                 /* Still continuing */
4674         }
4675
4676         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4677         vsi->bw_max_quanta = bw_config.max_bw;
4678         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4679                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4680         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4681                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4682                 vsi->bw_ets_limit_credits[i] =
4683                                         le16_to_cpu(bw_ets_config.credits[i]);
4684                 /* 3 bits out of 4 for each TC */
4685                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4686         }
4687
4688         return 0;
4689 }
4690
4691 /**
4692  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4693  * @vsi: the VSI being configured
4694  * @enabled_tc: TC bitmap
4695  * @bw_credits: BW shared credits per TC
4696  *
4697  * Returns 0 on success, negative value on failure
4698  **/
4699 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4700                                        u8 *bw_share)
4701 {
4702         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4703         i40e_status ret;
4704         int i;
4705
4706         bw_data.tc_valid_bits = enabled_tc;
4707         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4708                 bw_data.tc_bw_credits[i] = bw_share[i];
4709
4710         ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4711                                        NULL);
4712         if (ret) {
4713                 dev_info(&vsi->back->pdev->dev,
4714                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4715                          vsi->back->hw.aq.asq_last_status);
4716                 return -EINVAL;
4717         }
4718
4719         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4720                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4721
4722         return 0;
4723 }
4724
4725 /**
4726  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4727  * @vsi: the VSI being configured
4728  * @enabled_tc: TC map to be enabled
4729  *
4730  **/
4731 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4732 {
4733         struct net_device *netdev = vsi->netdev;
4734         struct i40e_pf *pf = vsi->back;
4735         struct i40e_hw *hw = &pf->hw;
4736         u8 netdev_tc = 0;
4737         int i;
4738         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4739
4740         if (!netdev)
4741                 return;
4742
4743         if (!enabled_tc) {
4744                 netdev_reset_tc(netdev);
4745                 return;
4746         }
4747
4748         /* Set up actual enabled TCs on the VSI */
4749         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4750                 return;
4751
4752         /* set per TC queues for the VSI */
4753         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4754                 /* Only set TC queues for enabled tcs
4755                  *
4756                  * e.g. For a VSI that has TC0 and TC3 enabled the
4757                  * enabled_tc bitmap would be 0x00001001; the driver
4758                  * will set the numtc for netdev as 2 that will be
4759                  * referenced by the netdev layer as TC 0 and 1.
4760                  */
4761                 if (vsi->tc_config.enabled_tc & BIT(i))
4762                         netdev_set_tc_queue(netdev,
4763                                         vsi->tc_config.tc_info[i].netdev_tc,
4764                                         vsi->tc_config.tc_info[i].qcount,
4765                                         vsi->tc_config.tc_info[i].qoffset);
4766         }
4767
4768         /* Assign UP2TC map for the VSI */
4769         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4770                 /* Get the actual TC# for the UP */
4771                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4772                 /* Get the mapped netdev TC# for the UP */
4773                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4774                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4775         }
4776 }
4777
4778 /**
4779  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4780  * @vsi: the VSI being configured
4781  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4782  **/
4783 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4784                                       struct i40e_vsi_context *ctxt)
4785 {
4786         /* copy just the sections touched not the entire info
4787          * since not all sections are valid as returned by
4788          * update vsi params
4789          */
4790         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4791         memcpy(&vsi->info.queue_mapping,
4792                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4793         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4794                sizeof(vsi->info.tc_mapping));
4795 }
4796
4797 /**
4798  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4799  * @vsi: VSI to be configured
4800  * @enabled_tc: TC bitmap
4801  *
4802  * This configures a particular VSI for TCs that are mapped to the
4803  * given TC bitmap. It uses default bandwidth share for TCs across
4804  * VSIs to configure TC for a particular VSI.
4805  *
4806  * NOTE:
4807  * It is expected that the VSI queues have been quisced before calling
4808  * this function.
4809  **/
4810 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4811 {
4812         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4813         struct i40e_vsi_context ctxt;
4814         int ret = 0;
4815         int i;
4816
4817         /* Check if enabled_tc is same as existing or new TCs */
4818         if (vsi->tc_config.enabled_tc == enabled_tc)
4819                 return ret;
4820
4821         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4822         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4823                 if (enabled_tc & BIT(i))
4824                         bw_share[i] = 1;
4825         }
4826
4827         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4828         if (ret) {
4829                 dev_info(&vsi->back->pdev->dev,
4830                          "Failed configuring TC map %d for VSI %d\n",
4831                          enabled_tc, vsi->seid);
4832                 goto out;
4833         }
4834
4835         /* Update Queue Pairs Mapping for currently enabled UPs */
4836         ctxt.seid = vsi->seid;
4837         ctxt.pf_num = vsi->back->hw.pf_id;
4838         ctxt.vf_num = 0;
4839         ctxt.uplink_seid = vsi->uplink_seid;
4840         ctxt.info = vsi->info;
4841         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4842
4843         if (vsi->back->flags & I40E_FLAG_IWARP_ENABLED) {
4844                 ctxt.info.valid_sections |=
4845                                 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
4846                 ctxt.info.queueing_opt_flags |= I40E_AQ_VSI_QUE_OPT_TCP_ENA;
4847         }
4848
4849         /* Update the VSI after updating the VSI queue-mapping information */
4850         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4851         if (ret) {
4852                 dev_info(&vsi->back->pdev->dev,
4853                          "Update vsi tc config failed, err %s aq_err %s\n",
4854                          i40e_stat_str(&vsi->back->hw, ret),
4855                          i40e_aq_str(&vsi->back->hw,
4856                                      vsi->back->hw.aq.asq_last_status));
4857                 goto out;
4858         }
4859         /* update the local VSI info with updated queue map */
4860         i40e_vsi_update_queue_map(vsi, &ctxt);
4861         vsi->info.valid_sections = 0;
4862
4863         /* Update current VSI BW information */
4864         ret = i40e_vsi_get_bw_info(vsi);
4865         if (ret) {
4866                 dev_info(&vsi->back->pdev->dev,
4867                          "Failed updating vsi bw info, err %s aq_err %s\n",
4868                          i40e_stat_str(&vsi->back->hw, ret),
4869                          i40e_aq_str(&vsi->back->hw,
4870                                      vsi->back->hw.aq.asq_last_status));
4871                 goto out;
4872         }
4873
4874         /* Update the netdev TC setup */
4875         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4876 out:
4877         return ret;
4878 }
4879
4880 /**
4881  * i40e_veb_config_tc - Configure TCs for given VEB
4882  * @veb: given VEB
4883  * @enabled_tc: TC bitmap
4884  *
4885  * Configures given TC bitmap for VEB (switching) element
4886  **/
4887 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4888 {
4889         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4890         struct i40e_pf *pf = veb->pf;
4891         int ret = 0;
4892         int i;
4893
4894         /* No TCs or already enabled TCs just return */
4895         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4896                 return ret;
4897
4898         bw_data.tc_valid_bits = enabled_tc;
4899         /* bw_data.absolute_credits is not set (relative) */
4900
4901         /* Enable ETS TCs with equal BW Share for now */
4902         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4903                 if (enabled_tc & BIT(i))
4904                         bw_data.tc_bw_share_credits[i] = 1;
4905         }
4906
4907         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4908                                                    &bw_data, NULL);
4909         if (ret) {
4910                 dev_info(&pf->pdev->dev,
4911                          "VEB bw config failed, err %s aq_err %s\n",
4912                          i40e_stat_str(&pf->hw, ret),
4913                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4914                 goto out;
4915         }
4916
4917         /* Update the BW information */
4918         ret = i40e_veb_get_bw_info(veb);
4919         if (ret) {
4920                 dev_info(&pf->pdev->dev,
4921                          "Failed getting veb bw config, err %s aq_err %s\n",
4922                          i40e_stat_str(&pf->hw, ret),
4923                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4924         }
4925
4926 out:
4927         return ret;
4928 }
4929
4930 #ifdef CONFIG_I40E_DCB
4931 /**
4932  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4933  * @pf: PF struct
4934  *
4935  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4936  * the caller would've quiesce all the VSIs before calling
4937  * this function
4938  **/
4939 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4940 {
4941         u8 tc_map = 0;
4942         int ret;
4943         u8 v;
4944
4945         /* Enable the TCs available on PF to all VEBs */
4946         tc_map = i40e_pf_get_tc_map(pf);
4947         for (v = 0; v < I40E_MAX_VEB; v++) {
4948                 if (!pf->veb[v])
4949                         continue;
4950                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4951                 if (ret) {
4952                         dev_info(&pf->pdev->dev,
4953                                  "Failed configuring TC for VEB seid=%d\n",
4954                                  pf->veb[v]->seid);
4955                         /* Will try to configure as many components */
4956                 }
4957         }
4958
4959         /* Update each VSI */
4960         for (v = 0; v < pf->num_alloc_vsi; v++) {
4961                 if (!pf->vsi[v])
4962                         continue;
4963
4964                 /* - Enable all TCs for the LAN VSI
4965 #ifdef I40E_FCOE
4966                  * - For FCoE VSI only enable the TC configured
4967                  *   as per the APP TLV
4968 #endif
4969                  * - For all others keep them at TC0 for now
4970                  */
4971                 if (v == pf->lan_vsi)
4972                         tc_map = i40e_pf_get_tc_map(pf);
4973                 else
4974                         tc_map = i40e_pf_get_default_tc(pf);
4975 #ifdef I40E_FCOE
4976                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
4977                         tc_map = i40e_get_fcoe_tc_map(pf);
4978 #endif /* #ifdef I40E_FCOE */
4979
4980                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4981                 if (ret) {
4982                         dev_info(&pf->pdev->dev,
4983                                  "Failed configuring TC for VSI seid=%d\n",
4984                                  pf->vsi[v]->seid);
4985                         /* Will try to configure as many components */
4986                 } else {
4987                         /* Re-configure VSI vectors based on updated TC map */
4988                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
4989                         if (pf->vsi[v]->netdev)
4990                                 i40e_dcbnl_set_all(pf->vsi[v]);
4991                 }
4992         }
4993 }
4994
4995 /**
4996  * i40e_resume_port_tx - Resume port Tx
4997  * @pf: PF struct
4998  *
4999  * Resume a port's Tx and issue a PF reset in case of failure to
5000  * resume.
5001  **/
5002 static int i40e_resume_port_tx(struct i40e_pf *pf)
5003 {
5004         struct i40e_hw *hw = &pf->hw;
5005         int ret;
5006
5007         ret = i40e_aq_resume_port_tx(hw, NULL);
5008         if (ret) {
5009                 dev_info(&pf->pdev->dev,
5010                          "Resume Port Tx failed, err %s aq_err %s\n",
5011                           i40e_stat_str(&pf->hw, ret),
5012                           i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5013                 /* Schedule PF reset to recover */
5014                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5015                 i40e_service_event_schedule(pf);
5016         }
5017
5018         return ret;
5019 }
5020
5021 /**
5022  * i40e_init_pf_dcb - Initialize DCB configuration
5023  * @pf: PF being configured
5024  *
5025  * Query the current DCB configuration and cache it
5026  * in the hardware structure
5027  **/
5028 static int i40e_init_pf_dcb(struct i40e_pf *pf)
5029 {
5030         struct i40e_hw *hw = &pf->hw;
5031         int err = 0;
5032
5033         /* Do not enable DCB for SW1 and SW2 images even if the FW is capable */
5034         if (pf->flags & I40E_FLAG_NO_DCB_SUPPORT)
5035                 goto out;
5036
5037         /* Get the initial DCB configuration */
5038         err = i40e_init_dcb(hw);
5039         if (!err) {
5040                 /* Device/Function is not DCBX capable */
5041                 if ((!hw->func_caps.dcb) ||
5042                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
5043                         dev_info(&pf->pdev->dev,
5044                                  "DCBX offload is not supported or is disabled for this PF.\n");
5045
5046                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
5047                                 goto out;
5048
5049                 } else {
5050                         /* When status is not DISABLED then DCBX in FW */
5051                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
5052                                        DCB_CAP_DCBX_VER_IEEE;
5053
5054                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
5055                         /* Enable DCB tagging only when more than one TC */
5056                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5057                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5058                         dev_dbg(&pf->pdev->dev,
5059                                 "DCBX offload is supported for this PF.\n");
5060                 }
5061         } else {
5062                 dev_info(&pf->pdev->dev,
5063                          "Query for DCB configuration failed, err %s aq_err %s\n",
5064                          i40e_stat_str(&pf->hw, err),
5065                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5066         }
5067
5068 out:
5069         return err;
5070 }
5071 #endif /* CONFIG_I40E_DCB */
5072 #define SPEED_SIZE 14
5073 #define FC_SIZE 8
5074 /**
5075  * i40e_print_link_message - print link up or down
5076  * @vsi: the VSI for which link needs a message
5077  */
5078 void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
5079 {
5080         char *speed = "Unknown";
5081         char *fc = "Unknown";
5082
5083         if (vsi->current_isup == isup)
5084                 return;
5085         vsi->current_isup = isup;
5086         if (!isup) {
5087                 netdev_info(vsi->netdev, "NIC Link is Down\n");
5088                 return;
5089         }
5090
5091         /* Warn user if link speed on NPAR enabled partition is not at
5092          * least 10GB
5093          */
5094         if (vsi->back->hw.func_caps.npar_enable &&
5095             (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
5096              vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
5097                 netdev_warn(vsi->netdev,
5098                             "The partition detected link speed that is less than 10Gbps\n");
5099
5100         switch (vsi->back->hw.phy.link_info.link_speed) {
5101         case I40E_LINK_SPEED_40GB:
5102                 speed = "40 G";
5103                 break;
5104         case I40E_LINK_SPEED_20GB:
5105                 speed = "20 G";
5106                 break;
5107         case I40E_LINK_SPEED_10GB:
5108                 speed = "10 G";
5109                 break;
5110         case I40E_LINK_SPEED_1GB:
5111                 speed = "1000 M";
5112                 break;
5113         case I40E_LINK_SPEED_100MB:
5114                 speed = "100 M";
5115                 break;
5116         default:
5117                 break;
5118         }
5119
5120         switch (vsi->back->hw.fc.current_mode) {
5121         case I40E_FC_FULL:
5122                 fc = "RX/TX";
5123                 break;
5124         case I40E_FC_TX_PAUSE:
5125                 fc = "TX";
5126                 break;
5127         case I40E_FC_RX_PAUSE:
5128                 fc = "RX";
5129                 break;
5130         default:
5131                 fc = "None";
5132                 break;
5133         }
5134
5135         netdev_info(vsi->netdev, "NIC Link is Up %sbps Full Duplex, Flow Control: %s\n",
5136                     speed, fc);
5137 }
5138
5139 /**
5140  * i40e_up_complete - Finish the last steps of bringing up a connection
5141  * @vsi: the VSI being configured
5142  **/
5143 static int i40e_up_complete(struct i40e_vsi *vsi)
5144 {
5145         struct i40e_pf *pf = vsi->back;
5146         int err;
5147
5148         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5149                 i40e_vsi_configure_msix(vsi);
5150         else
5151                 i40e_configure_msi_and_legacy(vsi);
5152
5153         /* start rings */
5154         err = i40e_vsi_control_rings(vsi, true);
5155         if (err)
5156                 return err;
5157
5158         clear_bit(__I40E_DOWN, &vsi->state);
5159         i40e_napi_enable_all(vsi);
5160         i40e_vsi_enable_irq(vsi);
5161
5162         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
5163             (vsi->netdev)) {
5164                 i40e_print_link_message(vsi, true);
5165                 netif_tx_start_all_queues(vsi->netdev);
5166                 netif_carrier_on(vsi->netdev);
5167         } else if (vsi->netdev) {
5168                 i40e_print_link_message(vsi, false);
5169                 /* need to check for qualified module here*/
5170                 if ((pf->hw.phy.link_info.link_info &
5171                         I40E_AQ_MEDIA_AVAILABLE) &&
5172                     (!(pf->hw.phy.link_info.an_info &
5173                         I40E_AQ_QUALIFIED_MODULE)))
5174                         netdev_err(vsi->netdev,
5175                                    "the driver failed to link because an unqualified module was detected.");
5176         }
5177
5178         /* replay FDIR SB filters */
5179         if (vsi->type == I40E_VSI_FDIR) {
5180                 /* reset fd counters */
5181                 pf->fd_add_err = pf->fd_atr_cnt = 0;
5182                 if (pf->fd_tcp_rule > 0) {
5183                         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5184                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5185                                 dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
5186                         pf->fd_tcp_rule = 0;
5187                 }
5188                 i40e_fdir_filter_restore(vsi);
5189         }
5190
5191         /* On the next run of the service_task, notify any clients of the new
5192          * opened netdev
5193          */
5194         pf->flags |= I40E_FLAG_SERVICE_CLIENT_REQUESTED;
5195         i40e_service_event_schedule(pf);
5196
5197         return 0;
5198 }
5199
5200 /**
5201  * i40e_vsi_reinit_locked - Reset the VSI
5202  * @vsi: the VSI being configured
5203  *
5204  * Rebuild the ring structs after some configuration
5205  * has changed, e.g. MTU size.
5206  **/
5207 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
5208 {
5209         struct i40e_pf *pf = vsi->back;
5210
5211         WARN_ON(in_interrupt());
5212         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
5213                 usleep_range(1000, 2000);
5214         i40e_down(vsi);
5215
5216         i40e_up(vsi);
5217         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
5218 }
5219
5220 /**
5221  * i40e_up - Bring the connection back up after being down
5222  * @vsi: the VSI being configured
5223  **/
5224 int i40e_up(struct i40e_vsi *vsi)
5225 {
5226         int err;
5227
5228         err = i40e_vsi_configure(vsi);
5229         if (!err)
5230                 err = i40e_up_complete(vsi);
5231
5232         return err;
5233 }
5234
5235 /**
5236  * i40e_down - Shutdown the connection processing
5237  * @vsi: the VSI being stopped
5238  **/
5239 void i40e_down(struct i40e_vsi *vsi)
5240 {
5241         int i;
5242
5243         /* It is assumed that the caller of this function
5244          * sets the vsi->state __I40E_DOWN bit.
5245          */
5246         if (vsi->netdev) {
5247                 netif_carrier_off(vsi->netdev);
5248                 netif_tx_disable(vsi->netdev);
5249         }
5250         i40e_vsi_disable_irq(vsi);
5251         i40e_vsi_control_rings(vsi, false);
5252         i40e_napi_disable_all(vsi);
5253
5254         for (i = 0; i < vsi->num_queue_pairs; i++) {
5255                 i40e_clean_tx_ring(vsi->tx_rings[i]);
5256                 i40e_clean_rx_ring(vsi->rx_rings[i]);
5257         }
5258
5259         i40e_notify_client_of_netdev_close(vsi, false);
5260
5261 }
5262
5263 /**
5264  * i40e_setup_tc - configure multiple traffic classes
5265  * @netdev: net device to configure
5266  * @tc: number of traffic classes to enable
5267  **/
5268 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
5269 {
5270         struct i40e_netdev_priv *np = netdev_priv(netdev);
5271         struct i40e_vsi *vsi = np->vsi;
5272         struct i40e_pf *pf = vsi->back;
5273         u8 enabled_tc = 0;
5274         int ret = -EINVAL;
5275         int i;
5276
5277         /* Check if DCB enabled to continue */
5278         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
5279                 netdev_info(netdev, "DCB is not enabled for adapter\n");
5280                 goto exit;
5281         }
5282
5283         /* Check if MFP enabled */
5284         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
5285                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
5286                 goto exit;
5287         }
5288
5289         /* Check whether tc count is within enabled limit */
5290         if (tc > i40e_pf_get_num_tc(pf)) {
5291                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
5292                 goto exit;
5293         }
5294
5295         /* Generate TC map for number of tc requested */
5296         for (i = 0; i < tc; i++)
5297                 enabled_tc |= BIT(i);
5298
5299         /* Requesting same TC configuration as already enabled */
5300         if (enabled_tc == vsi->tc_config.enabled_tc)
5301                 return 0;
5302
5303         /* Quiesce VSI queues */
5304         i40e_quiesce_vsi(vsi);
5305
5306         /* Configure VSI for enabled TCs */
5307         ret = i40e_vsi_config_tc(vsi, enabled_tc);
5308         if (ret) {
5309                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
5310                             vsi->seid);
5311                 goto exit;
5312         }
5313
5314         /* Unquiesce VSI */
5315         i40e_unquiesce_vsi(vsi);
5316
5317 exit:
5318         return ret;
5319 }
5320
5321 #ifdef I40E_FCOE
5322 int __i40e_setup_tc(struct net_device *netdev, u32 handle, __be16 proto,
5323                     struct tc_to_netdev *tc)
5324 #else
5325 static int __i40e_setup_tc(struct net_device *netdev, u32 handle, __be16 proto,
5326                            struct tc_to_netdev *tc)
5327 #endif
5328 {
5329         if (handle != TC_H_ROOT || tc->type != TC_SETUP_MQPRIO)
5330                 return -EINVAL;
5331         return i40e_setup_tc(netdev, tc->tc);
5332 }
5333
5334 /**
5335  * i40e_open - Called when a network interface is made active
5336  * @netdev: network interface device structure
5337  *
5338  * The open entry point is called when a network interface is made
5339  * active by the system (IFF_UP).  At this point all resources needed
5340  * for transmit and receive operations are allocated, the interrupt
5341  * handler is registered with the OS, the netdev watchdog subtask is
5342  * enabled, and the stack is notified that the interface is ready.
5343  *
5344  * Returns 0 on success, negative value on failure
5345  **/
5346 int i40e_open(struct net_device *netdev)
5347 {
5348         struct i40e_netdev_priv *np = netdev_priv(netdev);
5349         struct i40e_vsi *vsi = np->vsi;
5350         struct i40e_pf *pf = vsi->back;
5351         int err;
5352
5353         /* disallow open during test or if eeprom is broken */
5354         if (test_bit(__I40E_TESTING, &pf->state) ||
5355             test_bit(__I40E_BAD_EEPROM, &pf->state))
5356                 return -EBUSY;
5357
5358         netif_carrier_off(netdev);
5359
5360         err = i40e_vsi_open(vsi);
5361         if (err)
5362                 return err;
5363
5364         /* configure global TSO hardware offload settings */
5365         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
5366                                                        TCP_FLAG_FIN) >> 16);
5367         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
5368                                                        TCP_FLAG_FIN |
5369                                                        TCP_FLAG_CWR) >> 16);
5370         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
5371
5372         udp_tunnel_get_rx_info(netdev);
5373         i40e_notify_client_of_netdev_open(vsi);
5374
5375         return 0;
5376 }
5377
5378 /**
5379  * i40e_vsi_open -
5380  * @vsi: the VSI to open
5381  *
5382  * Finish initialization of the VSI.
5383  *
5384  * Returns 0 on success, negative value on failure
5385  **/
5386 int i40e_vsi_open(struct i40e_vsi *vsi)
5387 {
5388         struct i40e_pf *pf = vsi->back;
5389         char int_name[I40E_INT_NAME_STR_LEN];
5390         int err;
5391
5392         /* allocate descriptors */
5393         err = i40e_vsi_setup_tx_resources(vsi);
5394         if (err)
5395                 goto err_setup_tx;
5396         err = i40e_vsi_setup_rx_resources(vsi);
5397         if (err)
5398                 goto err_setup_rx;
5399
5400         err = i40e_vsi_configure(vsi);
5401         if (err)
5402                 goto err_setup_rx;
5403
5404         if (vsi->netdev) {
5405                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
5406                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
5407                 err = i40e_vsi_request_irq(vsi, int_name);
5408                 if (err)
5409                         goto err_setup_rx;
5410
5411                 /* Notify the stack of the actual queue counts. */
5412                 err = netif_set_real_num_tx_queues(vsi->netdev,
5413                                                    vsi->num_queue_pairs);
5414                 if (err)
5415                         goto err_set_queues;
5416
5417                 err = netif_set_real_num_rx_queues(vsi->netdev,
5418                                                    vsi->num_queue_pairs);
5419                 if (err)
5420                         goto err_set_queues;
5421
5422         } else if (vsi->type == I40E_VSI_FDIR) {
5423                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
5424                          dev_driver_string(&pf->pdev->dev),
5425                          dev_name(&pf->pdev->dev));
5426                 err = i40e_vsi_request_irq(vsi, int_name);
5427
5428         } else {
5429                 err = -EINVAL;
5430                 goto err_setup_rx;
5431         }
5432
5433         err = i40e_up_complete(vsi);
5434         if (err)
5435                 goto err_up_complete;
5436
5437         return 0;
5438
5439 err_up_complete:
5440         i40e_down(vsi);
5441 err_set_queues:
5442         i40e_vsi_free_irq(vsi);
5443 err_setup_rx:
5444         i40e_vsi_free_rx_resources(vsi);
5445 err_setup_tx:
5446         i40e_vsi_free_tx_resources(vsi);
5447         if (vsi == pf->vsi[pf->lan_vsi])
5448                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
5449
5450         return err;
5451 }
5452
5453 /**
5454  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
5455  * @pf: Pointer to PF
5456  *
5457  * This function destroys the hlist where all the Flow Director
5458  * filters were saved.
5459  **/
5460 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
5461 {
5462         struct i40e_fdir_filter *filter;
5463         struct hlist_node *node2;
5464
5465         hlist_for_each_entry_safe(filter, node2,
5466                                   &pf->fdir_filter_list, fdir_node) {
5467                 hlist_del(&filter->fdir_node);
5468                 kfree(filter);
5469         }
5470         pf->fdir_pf_active_filters = 0;
5471 }
5472
5473 /**
5474  * i40e_close - Disables a network interface
5475  * @netdev: network interface device structure
5476  *
5477  * The close entry point is called when an interface is de-activated
5478  * by the OS.  The hardware is still under the driver's control, but
5479  * this netdev interface is disabled.
5480  *
5481  * Returns 0, this is not allowed to fail
5482  **/
5483 int i40e_close(struct net_device *netdev)
5484 {
5485         struct i40e_netdev_priv *np = netdev_priv(netdev);
5486         struct i40e_vsi *vsi = np->vsi;
5487
5488         i40e_vsi_close(vsi);
5489
5490         return 0;
5491 }
5492
5493 /**
5494  * i40e_do_reset - Start a PF or Core Reset sequence
5495  * @pf: board private structure
5496  * @reset_flags: which reset is requested
5497  *
5498  * The essential difference in resets is that the PF Reset
5499  * doesn't clear the packet buffers, doesn't reset the PE
5500  * firmware, and doesn't bother the other PFs on the chip.
5501  **/
5502 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
5503 {
5504         u32 val;
5505
5506         WARN_ON(in_interrupt());
5507
5508
5509         /* do the biggest reset indicated */
5510         if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {
5511
5512                 /* Request a Global Reset
5513                  *
5514                  * This will start the chip's countdown to the actual full
5515                  * chip reset event, and a warning interrupt to be sent
5516                  * to all PFs, including the requestor.  Our handler
5517                  * for the warning interrupt will deal with the shutdown
5518                  * and recovery of the switch setup.
5519                  */
5520                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
5521                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5522                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
5523                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5524
5525         } else if (reset_flags & BIT_ULL(__I40E_CORE_RESET_REQUESTED)) {
5526
5527                 /* Request a Core Reset
5528                  *
5529                  * Same as Global Reset, except does *not* include the MAC/PHY
5530                  */
5531                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
5532                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5533                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
5534                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5535                 i40e_flush(&pf->hw);
5536
5537         } else if (reset_flags & BIT_ULL(__I40E_PF_RESET_REQUESTED)) {
5538
5539                 /* Request a PF Reset
5540                  *
5541                  * Resets only the PF-specific registers
5542                  *
5543                  * This goes directly to the tear-down and rebuild of
5544                  * the switch, since we need to do all the recovery as
5545                  * for the Core Reset.
5546                  */
5547                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5548                 i40e_handle_reset_warning(pf);
5549
5550         } else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) {
5551                 int v;
5552
5553                 /* Find the VSI(s) that requested a re-init */
5554                 dev_info(&pf->pdev->dev,
5555                          "VSI reinit requested\n");
5556                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5557                         struct i40e_vsi *vsi = pf->vsi[v];
5558
5559                         if (vsi != NULL &&
5560                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5561                                 i40e_vsi_reinit_locked(pf->vsi[v]);
5562                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5563                         }
5564                 }
5565         } else if (reset_flags & BIT_ULL(__I40E_DOWN_REQUESTED)) {
5566                 int v;
5567
5568                 /* Find the VSI(s) that needs to be brought down */
5569                 dev_info(&pf->pdev->dev, "VSI down requested\n");
5570                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5571                         struct i40e_vsi *vsi = pf->vsi[v];
5572
5573                         if (vsi != NULL &&
5574                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5575                                 set_bit(__I40E_DOWN, &vsi->state);
5576                                 i40e_down(vsi);
5577                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5578                         }
5579                 }
5580         } else {
5581                 dev_info(&pf->pdev->dev,
5582                          "bad reset request 0x%08x\n", reset_flags);
5583         }
5584 }
5585
5586 #ifdef CONFIG_I40E_DCB
5587 /**
5588  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
5589  * @pf: board private structure
5590  * @old_cfg: current DCB config
5591  * @new_cfg: new DCB config
5592  **/
5593 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
5594                             struct i40e_dcbx_config *old_cfg,
5595                             struct i40e_dcbx_config *new_cfg)
5596 {
5597         bool need_reconfig = false;
5598
5599         /* Check if ETS configuration has changed */
5600         if (memcmp(&new_cfg->etscfg,
5601                    &old_cfg->etscfg,
5602                    sizeof(new_cfg->etscfg))) {
5603                 /* If Priority Table has changed reconfig is needed */
5604                 if (memcmp(&new_cfg->etscfg.prioritytable,
5605                            &old_cfg->etscfg.prioritytable,
5606                            sizeof(new_cfg->etscfg.prioritytable))) {
5607                         need_reconfig = true;
5608                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
5609                 }
5610
5611                 if (memcmp(&new_cfg->etscfg.tcbwtable,
5612                            &old_cfg->etscfg.tcbwtable,
5613                            sizeof(new_cfg->etscfg.tcbwtable)))
5614                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5615
5616                 if (memcmp(&new_cfg->etscfg.tsatable,
5617                            &old_cfg->etscfg.tsatable,
5618                            sizeof(new_cfg->etscfg.tsatable)))
5619                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5620         }
5621
5622         /* Check if PFC configuration has changed */
5623         if (memcmp(&new_cfg->pfc,
5624                    &old_cfg->pfc,
5625                    sizeof(new_cfg->pfc))) {
5626                 need_reconfig = true;
5627                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5628         }
5629
5630         /* Check if APP Table has changed */
5631         if (memcmp(&new_cfg->app,
5632                    &old_cfg->app,
5633                    sizeof(new_cfg->app))) {
5634                 need_reconfig = true;
5635                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5636         }
5637
5638         dev_dbg(&pf->pdev->dev, "dcb need_reconfig=%d\n", need_reconfig);
5639         return need_reconfig;
5640 }
5641
5642 /**
5643  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5644  * @pf: board private structure
5645  * @e: event info posted on ARQ
5646  **/
5647 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5648                                   struct i40e_arq_event_info *e)
5649 {
5650         struct i40e_aqc_lldp_get_mib *mib =
5651                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5652         struct i40e_hw *hw = &pf->hw;
5653         struct i40e_dcbx_config tmp_dcbx_cfg;
5654         bool need_reconfig = false;
5655         int ret = 0;
5656         u8 type;
5657
5658         /* Not DCB capable or capability disabled */
5659         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5660                 return ret;
5661
5662         /* Ignore if event is not for Nearest Bridge */
5663         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5664                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5665         dev_dbg(&pf->pdev->dev, "LLDP event mib bridge type 0x%x\n", type);
5666         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5667                 return ret;
5668
5669         /* Check MIB Type and return if event for Remote MIB update */
5670         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5671         dev_dbg(&pf->pdev->dev,
5672                 "LLDP event mib type %s\n", type ? "remote" : "local");
5673         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5674                 /* Update the remote cached instance and return */
5675                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5676                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5677                                 &hw->remote_dcbx_config);
5678                 goto exit;
5679         }
5680
5681         /* Store the old configuration */
5682         tmp_dcbx_cfg = hw->local_dcbx_config;
5683
5684         /* Reset the old DCBx configuration data */
5685         memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
5686         /* Get updated DCBX data from firmware */
5687         ret = i40e_get_dcb_config(&pf->hw);
5688         if (ret) {
5689                 dev_info(&pf->pdev->dev,
5690                          "Failed querying DCB configuration data from firmware, err %s aq_err %s\n",
5691                          i40e_stat_str(&pf->hw, ret),
5692                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5693                 goto exit;
5694         }
5695
5696         /* No change detected in DCBX configs */
5697         if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
5698                     sizeof(tmp_dcbx_cfg))) {
5699                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5700                 goto exit;
5701         }
5702
5703         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
5704                                                &hw->local_dcbx_config);
5705
5706         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
5707
5708         if (!need_reconfig)
5709                 goto exit;
5710
5711         /* Enable DCB tagging only when more than one TC */
5712         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5713                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5714         else
5715                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5716
5717         set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5718         /* Reconfiguration needed quiesce all VSIs */
5719         i40e_pf_quiesce_all_vsi(pf);
5720
5721         /* Changes in configuration update VEB/VSI */
5722         i40e_dcb_reconfigure(pf);
5723
5724         ret = i40e_resume_port_tx(pf);
5725
5726         clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5727         /* In case of error no point in resuming VSIs */
5728         if (ret)
5729                 goto exit;
5730
5731         /* Wait for the PF's queues to be disabled */
5732         ret = i40e_pf_wait_queues_disabled(pf);
5733         if (ret) {
5734                 /* Schedule PF reset to recover */
5735                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5736                 i40e_service_event_schedule(pf);
5737         } else {
5738                 i40e_pf_unquiesce_all_vsi(pf);
5739                 /* Notify the client for the DCB changes */
5740                 i40e_notify_client_of_l2_param_changes(pf->vsi[pf->lan_vsi]);
5741         }
5742
5743 exit:
5744         return ret;
5745 }
5746 #endif /* CONFIG_I40E_DCB */
5747
5748 /**
5749  * i40e_do_reset_safe - Protected reset path for userland calls.
5750  * @pf: board private structure
5751  * @reset_flags: which reset is requested
5752  *
5753  **/
5754 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5755 {
5756         rtnl_lock();
5757         i40e_do_reset(pf, reset_flags);
5758         rtnl_unlock();
5759 }
5760
5761 /**
5762  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5763  * @pf: board private structure
5764  * @e: event info posted on ARQ
5765  *
5766  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5767  * and VF queues
5768  **/
5769 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5770                                            struct i40e_arq_event_info *e)
5771 {
5772         struct i40e_aqc_lan_overflow *data =
5773                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5774         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5775         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5776         struct i40e_hw *hw = &pf->hw;
5777         struct i40e_vf *vf;
5778         u16 vf_id;
5779
5780         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5781                 queue, qtx_ctl);
5782
5783         /* Queue belongs to VF, find the VF and issue VF reset */
5784         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5785             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5786                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5787                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5788                 vf_id -= hw->func_caps.vf_base_id;
5789                 vf = &pf->vf[vf_id];
5790                 i40e_vc_notify_vf_reset(vf);
5791                 /* Allow VF to process pending reset notification */
5792                 msleep(20);
5793                 i40e_reset_vf(vf, false);
5794         }
5795 }
5796
5797 /**
5798  * i40e_service_event_complete - Finish up the service event
5799  * @pf: board private structure
5800  **/
5801 static void i40e_service_event_complete(struct i40e_pf *pf)
5802 {
5803         WARN_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5804
5805         /* flush memory to make sure state is correct before next watchog */
5806         smp_mb__before_atomic();
5807         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5808 }
5809
5810 /**
5811  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5812  * @pf: board private structure
5813  **/
5814 u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5815 {
5816         u32 val, fcnt_prog;
5817
5818         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5819         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5820         return fcnt_prog;
5821 }
5822
5823 /**
5824  * i40e_get_current_fd_count - Get total FD filters programmed for this PF
5825  * @pf: board private structure
5826  **/
5827 u32 i40e_get_current_fd_count(struct i40e_pf *pf)
5828 {
5829         u32 val, fcnt_prog;
5830
5831         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5832         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5833                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5834                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5835         return fcnt_prog;
5836 }
5837
5838 /**
5839  * i40e_get_global_fd_count - Get total FD filters programmed on device
5840  * @pf: board private structure
5841  **/
5842 u32 i40e_get_global_fd_count(struct i40e_pf *pf)
5843 {
5844         u32 val, fcnt_prog;
5845
5846         val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
5847         fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
5848                     ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
5849                      I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
5850         return fcnt_prog;
5851 }
5852
5853 /**
5854  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5855  * @pf: board private structure
5856  **/
5857 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5858 {
5859         struct i40e_fdir_filter *filter;
5860         u32 fcnt_prog, fcnt_avail;
5861         struct hlist_node *node;
5862
5863         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5864                 return;
5865
5866         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5867          * to re-enable
5868          */
5869         fcnt_prog = i40e_get_global_fd_count(pf);
5870         fcnt_avail = pf->fdir_pf_filter_count;
5871         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5872             (pf->fd_add_err == 0) ||
5873             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5874                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5875                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5876                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5877                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5878                                 dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5879                 }
5880         }
5881         /* Wait for some more space to be available to turn on ATR */
5882         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5883                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5884                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5885                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5886                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5887                                 dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
5888                 }
5889         }
5890
5891         /* if hw had a problem adding a filter, delete it */
5892         if (pf->fd_inv > 0) {
5893                 hlist_for_each_entry_safe(filter, node,
5894                                           &pf->fdir_filter_list, fdir_node) {
5895                         if (filter->fd_id == pf->fd_inv) {
5896                                 hlist_del(&filter->fdir_node);
5897                                 kfree(filter);
5898                                 pf->fdir_pf_active_filters--;
5899                         }
5900                 }
5901         }
5902 }
5903
5904 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5905 #define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
5906 /**
5907  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5908  * @pf: board private structure
5909  **/
5910 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5911 {
5912         unsigned long min_flush_time;
5913         int flush_wait_retry = 50;
5914         bool disable_atr = false;
5915         int fd_room;
5916         int reg;
5917
5918         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5919                 return;
5920
5921         if (!time_after(jiffies, pf->fd_flush_timestamp +
5922                                  (I40E_MIN_FD_FLUSH_INTERVAL * HZ)))
5923                 return;
5924
5925         /* If the flush is happening too quick and we have mostly SB rules we
5926          * should not re-enable ATR for some time.
5927          */
5928         min_flush_time = pf->fd_flush_timestamp +
5929                          (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
5930         fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;
5931
5932         if (!(time_after(jiffies, min_flush_time)) &&
5933             (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
5934                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
5935                         dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
5936                 disable_atr = true;
5937         }
5938
5939         pf->fd_flush_timestamp = jiffies;
5940         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5941         /* flush all filters */
5942         wr32(&pf->hw, I40E_PFQF_CTL_1,
5943              I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
5944         i40e_flush(&pf->hw);
5945         pf->fd_flush_cnt++;
5946         pf->fd_add_err = 0;
5947         do {
5948                 /* Check FD flush status every 5-6msec */
5949                 usleep_range(5000, 6000);
5950                 reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
5951                 if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
5952                         break;
5953         } while (flush_wait_retry--);
5954         if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
5955                 dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
5956         } else {
5957                 /* replay sideband filters */
5958                 i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
5959                 if (!disable_atr)
5960                         pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
5961                 clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5962                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
5963                         dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
5964         }
5965 }
5966
5967 /**
5968  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
5969  * @pf: board private structure
5970  **/
5971 u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
5972 {
5973         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
5974 }
5975
5976 /* We can see up to 256 filter programming desc in transit if the filters are
5977  * being applied really fast; before we see the first
5978  * filter miss error on Rx queue 0. Accumulating enough error messages before
5979  * reacting will make sure we don't cause flush too often.
5980  */
5981 #define I40E_MAX_FD_PROGRAM_ERROR 256
5982
5983 /**
5984  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
5985  * @pf: board private structure
5986  **/
5987 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
5988 {
5989
5990         /* if interface is down do nothing */
5991         if (test_bit(__I40E_DOWN, &pf->state))
5992                 return;
5993
5994         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5995                 return;
5996
5997         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5998                 i40e_fdir_flush_and_replay(pf);
5999
6000         i40e_fdir_check_and_reenable(pf);
6001
6002 }
6003
6004 /**
6005  * i40e_vsi_link_event - notify VSI of a link event
6006  * @vsi: vsi to be notified
6007  * @link_up: link up or down
6008  **/
6009 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
6010 {
6011         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
6012                 return;
6013
6014         switch (vsi->type) {
6015         case I40E_VSI_MAIN:
6016 #ifdef I40E_FCOE
6017         case I40E_VSI_FCOE:
6018 #endif
6019                 if (!vsi->netdev || !vsi->netdev_registered)
6020                         break;
6021
6022                 if (link_up) {
6023                         netif_carrier_on(vsi->netdev);
6024                         netif_tx_wake_all_queues(vsi->netdev);
6025                 } else {
6026                         netif_carrier_off(vsi->netdev);
6027                         netif_tx_stop_all_queues(vsi->netdev);
6028                 }
6029                 break;
6030
6031         case I40E_VSI_SRIOV:
6032         case I40E_VSI_VMDQ2:
6033         case I40E_VSI_CTRL:
6034         case I40E_VSI_IWARP:
6035         case I40E_VSI_MIRROR:
6036         default:
6037                 /* there is no notification for other VSIs */
6038                 break;
6039         }
6040 }
6041
6042 /**
6043  * i40e_veb_link_event - notify elements on the veb of a link event
6044  * @veb: veb to be notified
6045  * @link_up: link up or down
6046  **/
6047 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
6048 {
6049         struct i40e_pf *pf;
6050         int i;
6051
6052         if (!veb || !veb->pf)
6053                 return;
6054         pf = veb->pf;
6055
6056         /* depth first... */
6057         for (i = 0; i < I40E_MAX_VEB; i++)
6058                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
6059                         i40e_veb_link_event(pf->veb[i], link_up);
6060
6061         /* ... now the local VSIs */
6062         for (i = 0; i < pf->num_alloc_vsi; i++)
6063                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
6064                         i40e_vsi_link_event(pf->vsi[i], link_up);
6065 }
6066
6067 /**
6068  * i40e_link_event - Update netif_carrier status
6069  * @pf: board private structure
6070  **/
6071 static void i40e_link_event(struct i40e_pf *pf)
6072 {
6073         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6074         u8 new_link_speed, old_link_speed;
6075         i40e_status status;
6076         bool new_link, old_link;
6077
6078         /* save off old link status information */
6079         pf->hw.phy.link_info_old = pf->hw.phy.link_info;
6080
6081         /* set this to force the get_link_status call to refresh state */
6082         pf->hw.phy.get_link_info = true;
6083
6084         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
6085
6086         status = i40e_get_link_status(&pf->hw, &new_link);
6087         if (status) {
6088                 dev_dbg(&pf->pdev->dev, "couldn't get link state, status: %d\n",
6089                         status);
6090                 return;
6091         }
6092
6093         old_link_speed = pf->hw.phy.link_info_old.link_speed;
6094         new_link_speed = pf->hw.phy.link_info.link_speed;
6095
6096         if (new_link == old_link &&
6097             new_link_speed == old_link_speed &&
6098             (test_bit(__I40E_DOWN, &vsi->state) ||
6099              new_link == netif_carrier_ok(vsi->netdev)))
6100                 return;
6101
6102         if (!test_bit(__I40E_DOWN, &vsi->state))
6103                 i40e_print_link_message(vsi, new_link);
6104
6105         /* Notify the base of the switch tree connected to
6106          * the link.  Floating VEBs are not notified.
6107          */
6108         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
6109                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
6110         else
6111                 i40e_vsi_link_event(vsi, new_link);
6112
6113         if (pf->vf)
6114                 i40e_vc_notify_link_state(pf);
6115
6116         if (pf->flags & I40E_FLAG_PTP)
6117                 i40e_ptp_set_increment(pf);
6118 }
6119
6120 /**
6121  * i40e_watchdog_subtask - periodic checks not using event driven response
6122  * @pf: board private structure
6123  **/
6124 static void i40e_watchdog_subtask(struct i40e_pf *pf)
6125 {
6126         int i;
6127
6128         /* if interface is down do nothing */
6129         if (test_bit(__I40E_DOWN, &pf->state) ||
6130             test_bit(__I40E_CONFIG_BUSY, &pf->state))
6131                 return;
6132
6133         /* make sure we don't do these things too often */
6134         if (time_before(jiffies, (pf->service_timer_previous +
6135                                   pf->service_timer_period)))
6136                 return;
6137         pf->service_timer_previous = jiffies;
6138
6139         if (pf->flags & I40E_FLAG_LINK_POLLING_ENABLED)
6140                 i40e_link_event(pf);
6141
6142         /* Update the stats for active netdevs so the network stack
6143          * can look at updated numbers whenever it cares to
6144          */
6145         for (i = 0; i < pf->num_alloc_vsi; i++)
6146                 if (pf->vsi[i] && pf->vsi[i]->netdev)
6147                         i40e_update_stats(pf->vsi[i]);
6148
6149         if (pf->flags & I40E_FLAG_VEB_STATS_ENABLED) {
6150                 /* Update the stats for the active switching components */
6151                 for (i = 0; i < I40E_MAX_VEB; i++)
6152                         if (pf->veb[i])
6153                                 i40e_update_veb_stats(pf->veb[i]);
6154         }
6155
6156         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
6157 }
6158
6159 /**
6160  * i40e_reset_subtask - Set up for resetting the device and driver
6161  * @pf: board private structure
6162  **/
6163 static void i40e_reset_subtask(struct i40e_pf *pf)
6164 {
6165         u32 reset_flags = 0;
6166
6167         rtnl_lock();
6168         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
6169                 reset_flags |= BIT(__I40E_REINIT_REQUESTED);
6170                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
6171         }
6172         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
6173                 reset_flags |= BIT(__I40E_PF_RESET_REQUESTED);
6174                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6175         }
6176         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
6177                 reset_flags |= BIT(__I40E_CORE_RESET_REQUESTED);
6178                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
6179         }
6180         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
6181                 reset_flags |= BIT(__I40E_GLOBAL_RESET_REQUESTED);
6182                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
6183         }
6184         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
6185                 reset_flags |= BIT(__I40E_DOWN_REQUESTED);
6186                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
6187         }
6188
6189         /* If there's a recovery already waiting, it takes
6190          * precedence before starting a new reset sequence.
6191          */
6192         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
6193                 i40e_handle_reset_warning(pf);
6194                 goto unlock;
6195         }
6196
6197         /* If we're already down or resetting, just bail */
6198         if (reset_flags &&
6199             !test_bit(__I40E_DOWN, &pf->state) &&
6200             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
6201                 i40e_do_reset(pf, reset_flags);
6202
6203 unlock:
6204         rtnl_unlock();
6205 }
6206
6207 /**
6208  * i40e_handle_link_event - Handle link event
6209  * @pf: board private structure
6210  * @e: event info posted on ARQ
6211  **/
6212 static void i40e_handle_link_event(struct i40e_pf *pf,
6213                                    struct i40e_arq_event_info *e)
6214 {
6215         struct i40e_aqc_get_link_status *status =
6216                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
6217
6218         /* Do a new status request to re-enable LSE reporting
6219          * and load new status information into the hw struct
6220          * This completely ignores any state information
6221          * in the ARQ event info, instead choosing to always
6222          * issue the AQ update link status command.
6223          */
6224         i40e_link_event(pf);
6225
6226         /* check for unqualified module, if link is down */
6227         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
6228             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
6229             (!(status->link_info & I40E_AQ_LINK_UP)))
6230                 dev_err(&pf->pdev->dev,
6231                         "The driver failed to link because an unqualified module was detected.\n");
6232 }
6233
6234 /**
6235  * i40e_clean_adminq_subtask - Clean the AdminQ rings
6236  * @pf: board private structure
6237  **/
6238 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
6239 {
6240         struct i40e_arq_event_info event;
6241         struct i40e_hw *hw = &pf->hw;
6242         u16 pending, i = 0;
6243         i40e_status ret;
6244         u16 opcode;
6245         u32 oldval;
6246         u32 val;
6247
6248         /* Do not run clean AQ when PF reset fails */
6249         if (test_bit(__I40E_RESET_FAILED, &pf->state))
6250                 return;
6251
6252         /* check for error indications */
6253         val = rd32(&pf->hw, pf->hw.aq.arq.len);
6254         oldval = val;
6255         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
6256                 if (hw->debug_mask & I40E_DEBUG_AQ)
6257                         dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
6258                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
6259         }
6260         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
6261                 if (hw->debug_mask & I40E_DEBUG_AQ)
6262                         dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
6263                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
6264                 pf->arq_overflows++;
6265         }
6266         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
6267                 if (hw->debug_mask & I40E_DEBUG_AQ)
6268                         dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
6269                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
6270         }
6271         if (oldval != val)
6272                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
6273
6274         val = rd32(&pf->hw, pf->hw.aq.asq.len);
6275         oldval = val;
6276         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
6277                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6278                         dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
6279                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
6280         }
6281         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
6282                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6283                         dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
6284                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
6285         }
6286         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
6287                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6288                         dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
6289                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
6290         }
6291         if (oldval != val)
6292                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
6293
6294         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
6295         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
6296         if (!event.msg_buf)
6297                 return;
6298
6299         do {
6300                 ret = i40e_clean_arq_element(hw, &event, &pending);
6301                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
6302                         break;
6303                 else if (ret) {
6304                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
6305                         break;
6306                 }
6307
6308                 opcode = le16_to_cpu(event.desc.opcode);
6309                 switch (opcode) {
6310
6311                 case i40e_aqc_opc_get_link_status:
6312                         i40e_handle_link_event(pf, &event);
6313                         break;
6314                 case i40e_aqc_opc_send_msg_to_pf:
6315                         ret = i40e_vc_process_vf_msg(pf,
6316                                         le16_to_cpu(event.desc.retval),
6317                                         le32_to_cpu(event.desc.cookie_high),
6318                                         le32_to_cpu(event.desc.cookie_low),
6319                                         event.msg_buf,
6320                                         event.msg_len);
6321                         break;
6322                 case i40e_aqc_opc_lldp_update_mib:
6323                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
6324 #ifdef CONFIG_I40E_DCB
6325                         rtnl_lock();
6326                         ret = i40e_handle_lldp_event(pf, &event);
6327                         rtnl_unlock();
6328 #endif /* CONFIG_I40E_DCB */
6329                         break;
6330                 case i40e_aqc_opc_event_lan_overflow:
6331                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
6332                         i40e_handle_lan_overflow_event(pf, &event);
6333                         break;
6334                 case i40e_aqc_opc_send_msg_to_peer:
6335                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
6336                         break;
6337                 case i40e_aqc_opc_nvm_erase:
6338                 case i40e_aqc_opc_nvm_update:
6339                 case i40e_aqc_opc_oem_post_update:
6340                         i40e_debug(&pf->hw, I40E_DEBUG_NVM,
6341                                    "ARQ NVM operation 0x%04x completed\n",
6342                                    opcode);
6343                         break;
6344                 default:
6345                         dev_info(&pf->pdev->dev,
6346                                  "ARQ: Unknown event 0x%04x ignored\n",
6347                                  opcode);
6348                         break;
6349                 }
6350         } while (pending && (i++ < pf->adminq_work_limit));
6351
6352         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
6353         /* re-enable Admin queue interrupt cause */
6354         val = rd32(hw, I40E_PFINT_ICR0_ENA);
6355         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
6356         wr32(hw, I40E_PFINT_ICR0_ENA, val);
6357         i40e_flush(hw);
6358
6359         kfree(event.msg_buf);
6360 }
6361
6362 /**
6363  * i40e_verify_eeprom - make sure eeprom is good to use
6364  * @pf: board private structure
6365  **/
6366 static void i40e_verify_eeprom(struct i40e_pf *pf)
6367 {
6368         int err;
6369
6370         err = i40e_diag_eeprom_test(&pf->hw);
6371         if (err) {
6372                 /* retry in case of garbage read */
6373                 err = i40e_diag_eeprom_test(&pf->hw);
6374                 if (err) {
6375                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
6376                                  err);
6377                         set_bit(__I40E_BAD_EEPROM, &pf->state);
6378                 }
6379         }
6380
6381         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
6382                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
6383                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
6384         }
6385 }
6386
6387 /**
6388  * i40e_enable_pf_switch_lb
6389  * @pf: pointer to the PF structure
6390  *
6391  * enable switch loop back or die - no point in a return value
6392  **/
6393 static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
6394 {
6395         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6396         struct i40e_vsi_context ctxt;
6397         int ret;
6398
6399         ctxt.seid = pf->main_vsi_seid;
6400         ctxt.pf_num = pf->hw.pf_id;
6401         ctxt.vf_num = 0;
6402         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6403         if (ret) {
6404                 dev_info(&pf->pdev->dev,
6405                          "couldn't get PF vsi config, err %s aq_err %s\n",
6406                          i40e_stat_str(&pf->hw, ret),
6407                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6408                 return;
6409         }
6410         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6411         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6412         ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6413
6414         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6415         if (ret) {
6416                 dev_info(&pf->pdev->dev,
6417                          "update vsi switch failed, err %s aq_err %s\n",
6418                          i40e_stat_str(&pf->hw, ret),
6419                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6420         }
6421 }
6422
6423 /**
6424  * i40e_disable_pf_switch_lb
6425  * @pf: pointer to the PF structure
6426  *
6427  * disable switch loop back or die - no point in a return value
6428  **/
6429 static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
6430 {
6431         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6432         struct i40e_vsi_context ctxt;
6433         int ret;
6434
6435         ctxt.seid = pf->main_vsi_seid;
6436         ctxt.pf_num = pf->hw.pf_id;
6437         ctxt.vf_num = 0;
6438         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6439         if (ret) {
6440                 dev_info(&pf->pdev->dev,
6441                          "couldn't get PF vsi config, err %s aq_err %s\n",
6442                          i40e_stat_str(&pf->hw, ret),
6443                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6444                 return;
6445         }
6446         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6447         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6448         ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6449
6450         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6451         if (ret) {
6452                 dev_info(&pf->pdev->dev,
6453                          "update vsi switch failed, err %s aq_err %s\n",
6454                          i40e_stat_str(&pf->hw, ret),
6455                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6456         }
6457 }
6458
6459 /**
6460  * i40e_config_bridge_mode - Configure the HW bridge mode
6461  * @veb: pointer to the bridge instance
6462  *
6463  * Configure the loop back mode for the LAN VSI that is downlink to the
6464  * specified HW bridge instance. It is expected this function is called
6465  * when a new HW bridge is instantiated.
6466  **/
6467 static void i40e_config_bridge_mode(struct i40e_veb *veb)
6468 {
6469         struct i40e_pf *pf = veb->pf;
6470
6471         if (pf->hw.debug_mask & I40E_DEBUG_LAN)
6472                 dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
6473                          veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
6474         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
6475                 i40e_disable_pf_switch_lb(pf);
6476         else
6477                 i40e_enable_pf_switch_lb(pf);
6478 }
6479
6480 /**
6481  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
6482  * @veb: pointer to the VEB instance
6483  *
6484  * This is a recursive function that first builds the attached VSIs then
6485  * recurses in to build the next layer of VEB.  We track the connections
6486  * through our own index numbers because the seid's from the HW could
6487  * change across the reset.
6488  **/
6489 static int i40e_reconstitute_veb(struct i40e_veb *veb)
6490 {
6491         struct i40e_vsi *ctl_vsi = NULL;
6492         struct i40e_pf *pf = veb->pf;
6493         int v, veb_idx;
6494         int ret;
6495
6496         /* build VSI that owns this VEB, temporarily attached to base VEB */
6497         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
6498                 if (pf->vsi[v] &&
6499                     pf->vsi[v]->veb_idx == veb->idx &&
6500                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
6501                         ctl_vsi = pf->vsi[v];
6502                         break;
6503                 }
6504         }
6505         if (!ctl_vsi) {
6506                 dev_info(&pf->pdev->dev,
6507                          "missing owner VSI for veb_idx %d\n", veb->idx);
6508                 ret = -ENOENT;
6509                 goto end_reconstitute;
6510         }
6511         if (ctl_vsi != pf->vsi[pf->lan_vsi])
6512                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6513         ret = i40e_add_vsi(ctl_vsi);
6514         if (ret) {
6515                 dev_info(&pf->pdev->dev,
6516                          "rebuild of veb_idx %d owner VSI failed: %d\n",
6517                          veb->idx, ret);
6518                 goto end_reconstitute;
6519         }
6520         i40e_vsi_reset_stats(ctl_vsi);
6521
6522         /* create the VEB in the switch and move the VSI onto the VEB */
6523         ret = i40e_add_veb(veb, ctl_vsi);
6524         if (ret)
6525                 goto end_reconstitute;
6526
6527         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
6528                 veb->bridge_mode = BRIDGE_MODE_VEB;
6529         else
6530                 veb->bridge_mode = BRIDGE_MODE_VEPA;
6531         i40e_config_bridge_mode(veb);
6532
6533         /* create the remaining VSIs attached to this VEB */
6534         for (v = 0; v < pf->num_alloc_vsi; v++) {
6535                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
6536                         continue;
6537
6538                 if (pf->vsi[v]->veb_idx == veb->idx) {
6539                         struct i40e_vsi *vsi = pf->vsi[v];
6540
6541                         vsi->uplink_seid = veb->seid;
6542                         ret = i40e_add_vsi(vsi);
6543                         if (ret) {
6544                                 dev_info(&pf->pdev->dev,
6545                                          "rebuild of vsi_idx %d failed: %d\n",
6546                                          v, ret);
6547                                 goto end_reconstitute;
6548                         }
6549                         i40e_vsi_reset_stats(vsi);
6550                 }
6551         }
6552
6553         /* create any VEBs attached to this VEB - RECURSION */
6554         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
6555                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
6556                         pf->veb[veb_idx]->uplink_seid = veb->seid;
6557                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
6558                         if (ret)
6559                                 break;
6560                 }
6561         }
6562
6563 end_reconstitute:
6564         return ret;
6565 }
6566
6567 /**
6568  * i40e_get_capabilities - get info about the HW
6569  * @pf: the PF struct
6570  **/
6571 static int i40e_get_capabilities(struct i40e_pf *pf)
6572 {
6573         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
6574         u16 data_size;
6575         int buf_len;
6576         int err;
6577
6578         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
6579         do {
6580                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
6581                 if (!cap_buf)
6582                         return -ENOMEM;
6583
6584                 /* this loads the data into the hw struct for us */
6585                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
6586                                             &data_size,
6587                                             i40e_aqc_opc_list_func_capabilities,
6588                                             NULL);
6589                 /* data loaded, buffer no longer needed */
6590                 kfree(cap_buf);
6591
6592                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
6593                         /* retry with a larger buffer */
6594                         buf_len = data_size;
6595                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
6596                         dev_info(&pf->pdev->dev,
6597                                  "capability discovery failed, err %s aq_err %s\n",
6598                                  i40e_stat_str(&pf->hw, err),
6599                                  i40e_aq_str(&pf->hw,
6600                                              pf->hw.aq.asq_last_status));
6601                         return -ENODEV;
6602                 }
6603         } while (err);
6604
6605         if (pf->hw.debug_mask & I40E_DEBUG_USER)
6606                 dev_info(&pf->pdev->dev,
6607                          "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",
6608                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6609                          pf->hw.func_caps.num_msix_vectors,
6610                          pf->hw.func_caps.num_msix_vectors_vf,
6611                          pf->hw.func_caps.fd_filters_guaranteed,
6612                          pf->hw.func_caps.fd_filters_best_effort,
6613                          pf->hw.func_caps.num_tx_qp,
6614                          pf->hw.func_caps.num_vsis);
6615
6616 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6617                        + pf->hw.func_caps.num_vfs)
6618         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6619                 dev_info(&pf->pdev->dev,
6620                          "got num_vsis %d, setting num_vsis to %d\n",
6621                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6622                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6623         }
6624
6625         return 0;
6626 }
6627
6628 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6629
6630 /**
6631  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6632  * @pf: board private structure
6633  **/
6634 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6635 {
6636         struct i40e_vsi *vsi;
6637         int i;
6638
6639         /* quick workaround for an NVM issue that leaves a critical register
6640          * uninitialized
6641          */
6642         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6643                 static const u32 hkey[] = {
6644                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6645                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6646                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6647                         0x95b3a76d};
6648
6649                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6650                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6651         }
6652
6653         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6654                 return;
6655
6656         /* find existing VSI and see if it needs configuring */
6657         vsi = NULL;
6658         for (i = 0; i < pf->num_alloc_vsi; i++) {
6659                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6660                         vsi = pf->vsi[i];
6661                         break;
6662                 }
6663         }
6664
6665         /* create a new VSI if none exists */
6666         if (!vsi) {
6667                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6668                                      pf->vsi[pf->lan_vsi]->seid, 0);
6669                 if (!vsi) {
6670                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6671                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6672                         return;
6673                 }
6674         }
6675
6676         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6677 }
6678
6679 /**
6680  * i40e_fdir_teardown - release the Flow Director resources
6681  * @pf: board private structure
6682  **/
6683 static void i40e_fdir_teardown(struct i40e_pf *pf)
6684 {
6685         int i;
6686
6687         i40e_fdir_filter_exit(pf);
6688         for (i = 0; i < pf->num_alloc_vsi; i++) {
6689                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6690                         i40e_vsi_release(pf->vsi[i]);
6691                         break;
6692                 }
6693         }
6694 }
6695
6696 /**
6697  * i40e_prep_for_reset - prep for the core to reset
6698  * @pf: board private structure
6699  *
6700  * Close up the VFs and other things in prep for PF Reset.
6701   **/
6702 static void i40e_prep_for_reset(struct i40e_pf *pf)
6703 {
6704         struct i40e_hw *hw = &pf->hw;
6705         i40e_status ret = 0;
6706         u32 v;
6707
6708         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6709         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6710                 return;
6711         if (i40e_check_asq_alive(&pf->hw))
6712                 i40e_vc_notify_reset(pf);
6713
6714         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6715
6716         /* quiesce the VSIs and their queues that are not already DOWN */
6717         i40e_pf_quiesce_all_vsi(pf);
6718
6719         for (v = 0; v < pf->num_alloc_vsi; v++) {
6720                 if (pf->vsi[v])
6721                         pf->vsi[v]->seid = 0;
6722         }
6723
6724         i40e_shutdown_adminq(&pf->hw);
6725
6726         /* call shutdown HMC */
6727         if (hw->hmc.hmc_obj) {
6728                 ret = i40e_shutdown_lan_hmc(hw);
6729                 if (ret)
6730                         dev_warn(&pf->pdev->dev,
6731                                  "shutdown_lan_hmc failed: %d\n", ret);
6732         }
6733 }
6734
6735 /**
6736  * i40e_send_version - update firmware with driver version
6737  * @pf: PF struct
6738  */
6739 static void i40e_send_version(struct i40e_pf *pf)
6740 {
6741         struct i40e_driver_version dv;
6742
6743         dv.major_version = DRV_VERSION_MAJOR;
6744         dv.minor_version = DRV_VERSION_MINOR;
6745         dv.build_version = DRV_VERSION_BUILD;
6746         dv.subbuild_version = 0;
6747         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6748         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6749 }
6750
6751 /**
6752  * i40e_reset_and_rebuild - reset and rebuild using a saved config
6753  * @pf: board private structure
6754  * @reinit: if the Main VSI needs to re-initialized.
6755  **/
6756 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
6757 {
6758         struct i40e_hw *hw = &pf->hw;
6759         u8 set_fc_aq_fail = 0;
6760         i40e_status ret;
6761         u32 val;
6762         u32 v;
6763
6764         /* Now we wait for GRST to settle out.
6765          * We don't have to delete the VEBs or VSIs from the hw switch
6766          * because the reset will make them disappear.
6767          */
6768         ret = i40e_pf_reset(hw);
6769         if (ret) {
6770                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6771                 set_bit(__I40E_RESET_FAILED, &pf->state);
6772                 goto clear_recovery;
6773         }
6774         pf->pfr_count++;
6775
6776         if (test_bit(__I40E_DOWN, &pf->state))
6777                 goto clear_recovery;
6778         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6779
6780         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6781         ret = i40e_init_adminq(&pf->hw);
6782         if (ret) {
6783                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, err %s aq_err %s\n",
6784                          i40e_stat_str(&pf->hw, ret),
6785                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6786                 goto clear_recovery;
6787         }
6788
6789         /* re-verify the eeprom if we just had an EMP reset */
6790         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
6791                 i40e_verify_eeprom(pf);
6792
6793         i40e_clear_pxe_mode(hw);
6794         ret = i40e_get_capabilities(pf);
6795         if (ret)
6796                 goto end_core_reset;
6797
6798         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6799                                 hw->func_caps.num_rx_qp,
6800                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6801         if (ret) {
6802                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6803                 goto end_core_reset;
6804         }
6805         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6806         if (ret) {
6807                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6808                 goto end_core_reset;
6809         }
6810
6811 #ifdef CONFIG_I40E_DCB
6812         ret = i40e_init_pf_dcb(pf);
6813         if (ret) {
6814                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
6815                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
6816                 /* Continue without DCB enabled */
6817         }
6818 #endif /* CONFIG_I40E_DCB */
6819 #ifdef I40E_FCOE
6820         i40e_init_pf_fcoe(pf);
6821
6822 #endif
6823         /* do basic switch setup */
6824         ret = i40e_setup_pf_switch(pf, reinit);
6825         if (ret)
6826                 goto end_core_reset;
6827
6828         /* The driver only wants link up/down and module qualification
6829          * reports from firmware.  Note the negative logic.
6830          */
6831         ret = i40e_aq_set_phy_int_mask(&pf->hw,
6832                                        ~(I40E_AQ_EVENT_LINK_UPDOWN |
6833                                          I40E_AQ_EVENT_MEDIA_NA |
6834                                          I40E_AQ_EVENT_MODULE_QUAL_FAIL), NULL);
6835         if (ret)
6836                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
6837                          i40e_stat_str(&pf->hw, ret),
6838                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6839
6840         /* make sure our flow control settings are restored */
6841         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6842         if (ret)
6843                 dev_dbg(&pf->pdev->dev, "setting flow control: ret = %s last_status = %s\n",
6844                         i40e_stat_str(&pf->hw, ret),
6845                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6846
6847         /* Rebuild the VSIs and VEBs that existed before reset.
6848          * They are still in our local switch element arrays, so only
6849          * need to rebuild the switch model in the HW.
6850          *
6851          * If there were VEBs but the reconstitution failed, we'll try
6852          * try to recover minimal use by getting the basic PF VSI working.
6853          */
6854         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6855                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6856                 /* find the one VEB connected to the MAC, and find orphans */
6857                 for (v = 0; v < I40E_MAX_VEB; v++) {
6858                         if (!pf->veb[v])
6859                                 continue;
6860
6861                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6862                             pf->veb[v]->uplink_seid == 0) {
6863                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6864
6865                                 if (!ret)
6866                                         continue;
6867
6868                                 /* If Main VEB failed, we're in deep doodoo,
6869                                  * so give up rebuilding the switch and set up
6870                                  * for minimal rebuild of PF VSI.
6871                                  * If orphan failed, we'll report the error
6872                                  * but try to keep going.
6873                                  */
6874                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6875                                         dev_info(&pf->pdev->dev,
6876                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6877                                                  ret);
6878                                         pf->vsi[pf->lan_vsi]->uplink_seid
6879                                                                 = pf->mac_seid;
6880                                         break;
6881                                 } else if (pf->veb[v]->uplink_seid == 0) {
6882                                         dev_info(&pf->pdev->dev,
6883                                                  "rebuild of orphan VEB failed: %d\n",
6884                                                  ret);
6885                                 }
6886                         }
6887                 }
6888         }
6889
6890         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6891                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6892                 /* no VEB, so rebuild only the Main VSI */
6893                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6894                 if (ret) {
6895                         dev_info(&pf->pdev->dev,
6896                                  "rebuild of Main VSI failed: %d\n", ret);
6897                         goto end_core_reset;
6898                 }
6899         }
6900
6901         /* Reconfigure hardware for allowing smaller MSS in the case
6902          * of TSO, so that we avoid the MDD being fired and causing
6903          * a reset in the case of small MSS+TSO.
6904          */
6905 #define I40E_REG_MSS          0x000E64DC
6906 #define I40E_REG_MSS_MIN_MASK 0x3FF0000
6907 #define I40E_64BYTE_MSS       0x400000
6908         val = rd32(hw, I40E_REG_MSS);
6909         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
6910                 val &= ~I40E_REG_MSS_MIN_MASK;
6911                 val |= I40E_64BYTE_MSS;
6912                 wr32(hw, I40E_REG_MSS, val);
6913         }
6914
6915         if (pf->flags & I40E_FLAG_RESTART_AUTONEG) {
6916                 msleep(75);
6917                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6918                 if (ret)
6919                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
6920                                  i40e_stat_str(&pf->hw, ret),
6921                                  i40e_aq_str(&pf->hw,
6922                                              pf->hw.aq.asq_last_status));
6923         }
6924         /* reinit the misc interrupt */
6925         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6926                 ret = i40e_setup_misc_vector(pf);
6927
6928         /* Add a filter to drop all Flow control frames from any VSI from being
6929          * transmitted. By doing so we stop a malicious VF from sending out
6930          * PAUSE or PFC frames and potentially controlling traffic for other
6931          * PF/VF VSIs.
6932          * The FW can still send Flow control frames if enabled.
6933          */
6934         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
6935                                                        pf->main_vsi_seid);
6936
6937         /* restart the VSIs that were rebuilt and running before the reset */
6938         i40e_pf_unquiesce_all_vsi(pf);
6939
6940         if (pf->num_alloc_vfs) {
6941                 for (v = 0; v < pf->num_alloc_vfs; v++)
6942                         i40e_reset_vf(&pf->vf[v], true);
6943         }
6944
6945         /* tell the firmware that we're starting */
6946         i40e_send_version(pf);
6947
6948 end_core_reset:
6949         clear_bit(__I40E_RESET_FAILED, &pf->state);
6950 clear_recovery:
6951         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
6952 }
6953
6954 /**
6955  * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
6956  * @pf: board private structure
6957  *
6958  * Close up the VFs and other things in prep for a Core Reset,
6959  * then get ready to rebuild the world.
6960  **/
6961 static void i40e_handle_reset_warning(struct i40e_pf *pf)
6962 {
6963         i40e_prep_for_reset(pf);
6964         i40e_reset_and_rebuild(pf, false);
6965 }
6966
6967 /**
6968  * i40e_handle_mdd_event
6969  * @pf: pointer to the PF structure
6970  *
6971  * Called from the MDD irq handler to identify possibly malicious vfs
6972  **/
6973 static void i40e_handle_mdd_event(struct i40e_pf *pf)
6974 {
6975         struct i40e_hw *hw = &pf->hw;
6976         bool mdd_detected = false;
6977         bool pf_mdd_detected = false;
6978         struct i40e_vf *vf;
6979         u32 reg;
6980         int i;
6981
6982         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
6983                 return;
6984
6985         /* find what triggered the MDD event */
6986         reg = rd32(hw, I40E_GL_MDET_TX);
6987         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
6988                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
6989                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
6990                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
6991                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
6992                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
6993                                 I40E_GL_MDET_TX_EVENT_SHIFT;
6994                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
6995                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
6996                                 pf->hw.func_caps.base_queue;
6997                 if (netif_msg_tx_err(pf))
6998                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
6999                                  event, queue, pf_num, vf_num);
7000                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
7001                 mdd_detected = true;
7002         }
7003         reg = rd32(hw, I40E_GL_MDET_RX);
7004         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
7005                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
7006                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
7007                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
7008                                 I40E_GL_MDET_RX_EVENT_SHIFT;
7009                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
7010                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
7011                                 pf->hw.func_caps.base_queue;
7012                 if (netif_msg_rx_err(pf))
7013                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
7014                                  event, queue, func);
7015                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
7016                 mdd_detected = true;
7017         }
7018
7019         if (mdd_detected) {
7020                 reg = rd32(hw, I40E_PF_MDET_TX);
7021                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
7022                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
7023                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
7024                         pf_mdd_detected = true;
7025                 }
7026                 reg = rd32(hw, I40E_PF_MDET_RX);
7027                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
7028                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
7029                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
7030                         pf_mdd_detected = true;
7031                 }
7032                 /* Queue belongs to the PF, initiate a reset */
7033                 if (pf_mdd_detected) {
7034                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
7035                         i40e_service_event_schedule(pf);
7036                 }
7037         }
7038
7039         /* see if one of the VFs needs its hand slapped */
7040         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
7041                 vf = &(pf->vf[i]);
7042                 reg = rd32(hw, I40E_VP_MDET_TX(i));
7043                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
7044                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
7045                         vf->num_mdd_events++;
7046                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
7047                                  i);
7048                 }
7049
7050                 reg = rd32(hw, I40E_VP_MDET_RX(i));
7051                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
7052                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
7053                         vf->num_mdd_events++;
7054                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
7055                                  i);
7056                 }
7057
7058                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
7059                         dev_info(&pf->pdev->dev,
7060                                  "Too many MDD events on VF %d, disabled\n", i);
7061                         dev_info(&pf->pdev->dev,
7062                                  "Use PF Control I/F to re-enable the VF\n");
7063                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
7064                 }
7065         }
7066
7067         /* re-enable mdd interrupt cause */
7068         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
7069         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
7070         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
7071         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
7072         i40e_flush(hw);
7073 }
7074
7075 /**
7076  * i40e_sync_udp_filters_subtask - Sync the VSI filter list with HW
7077  * @pf: board private structure
7078  **/
7079 static void i40e_sync_udp_filters_subtask(struct i40e_pf *pf)
7080 {
7081         struct i40e_hw *hw = &pf->hw;
7082         i40e_status ret;
7083         __be16 port;
7084         int i;
7085
7086         if (!(pf->flags & I40E_FLAG_UDP_FILTER_SYNC))
7087                 return;
7088
7089         pf->flags &= ~I40E_FLAG_UDP_FILTER_SYNC;
7090
7091         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
7092                 if (pf->pending_udp_bitmap & BIT_ULL(i)) {
7093                         pf->pending_udp_bitmap &= ~BIT_ULL(i);
7094                         port = pf->udp_ports[i].index;
7095                         if (port)
7096                                 ret = i40e_aq_add_udp_tunnel(hw, ntohs(port),
7097                                                      pf->udp_ports[i].type,
7098                                                      NULL, NULL);
7099                         else
7100                                 ret = i40e_aq_del_udp_tunnel(hw, i, NULL);
7101
7102                         if (ret) {
7103                                 dev_dbg(&pf->pdev->dev,
7104                                         "%s %s port %d, index %d failed, err %s aq_err %s\n",
7105                                         pf->udp_ports[i].type ? "vxlan" : "geneve",
7106                                         port ? "add" : "delete",
7107                                         ntohs(port), i,
7108                                         i40e_stat_str(&pf->hw, ret),
7109                                         i40e_aq_str(&pf->hw,
7110                                                     pf->hw.aq.asq_last_status));
7111                                 pf->udp_ports[i].index = 0;
7112                         }
7113                 }
7114         }
7115 }
7116
7117 /**
7118  * i40e_service_task - Run the driver's async subtasks
7119  * @work: pointer to work_struct containing our data
7120  **/
7121 static void i40e_service_task(struct work_struct *work)
7122 {
7123         struct i40e_pf *pf = container_of(work,
7124                                           struct i40e_pf,
7125                                           service_task);
7126         unsigned long start_time = jiffies;
7127
7128         /* don't bother with service tasks if a reset is in progress */
7129         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7130                 i40e_service_event_complete(pf);
7131                 return;
7132         }
7133
7134         i40e_detect_recover_hung(pf);
7135         i40e_sync_filters_subtask(pf);
7136         i40e_reset_subtask(pf);
7137         i40e_handle_mdd_event(pf);
7138         i40e_vc_process_vflr_event(pf);
7139         i40e_watchdog_subtask(pf);
7140         i40e_fdir_reinit_subtask(pf);
7141         i40e_client_subtask(pf);
7142         i40e_sync_filters_subtask(pf);
7143         i40e_sync_udp_filters_subtask(pf);
7144         i40e_clean_adminq_subtask(pf);
7145
7146         i40e_service_event_complete(pf);
7147
7148         /* If the tasks have taken longer than one timer cycle or there
7149          * is more work to be done, reschedule the service task now
7150          * rather than wait for the timer to tick again.
7151          */
7152         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
7153             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
7154             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
7155             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
7156                 i40e_service_event_schedule(pf);
7157 }
7158
7159 /**
7160  * i40e_service_timer - timer callback
7161  * @data: pointer to PF struct
7162  **/
7163 static void i40e_service_timer(unsigned long data)
7164 {
7165         struct i40e_pf *pf = (struct i40e_pf *)data;
7166
7167         mod_timer(&pf->service_timer,
7168                   round_jiffies(jiffies + pf->service_timer_period));
7169         i40e_service_event_schedule(pf);
7170 }
7171
7172 /**
7173  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
7174  * @vsi: the VSI being configured
7175  **/
7176 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
7177 {
7178         struct i40e_pf *pf = vsi->back;
7179
7180         switch (vsi->type) {
7181         case I40E_VSI_MAIN:
7182                 vsi->alloc_queue_pairs = pf->num_lan_qps;
7183                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7184                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7185                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7186                         vsi->num_q_vectors = pf->num_lan_msix;
7187                 else
7188                         vsi->num_q_vectors = 1;
7189
7190                 break;
7191
7192         case I40E_VSI_FDIR:
7193                 vsi->alloc_queue_pairs = 1;
7194                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
7195                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7196                 vsi->num_q_vectors = pf->num_fdsb_msix;
7197                 break;
7198
7199         case I40E_VSI_VMDQ2:
7200                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
7201                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7202                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7203                 vsi->num_q_vectors = pf->num_vmdq_msix;
7204                 break;
7205
7206         case I40E_VSI_SRIOV:
7207                 vsi->alloc_queue_pairs = pf->num_vf_qps;
7208                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7209                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7210                 break;
7211
7212 #ifdef I40E_FCOE
7213         case I40E_VSI_FCOE:
7214                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
7215                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7216                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7217                 vsi->num_q_vectors = pf->num_fcoe_msix;
7218                 break;
7219
7220 #endif /* I40E_FCOE */
7221         default:
7222                 WARN_ON(1);
7223                 return -ENODATA;
7224         }
7225
7226         return 0;
7227 }
7228
7229 /**
7230  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
7231  * @type: VSI pointer
7232  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
7233  *
7234  * On error: returns error code (negative)
7235  * On success: returns 0
7236  **/
7237 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
7238 {
7239         int size;
7240         int ret = 0;
7241
7242         /* allocate memory for both Tx and Rx ring pointers */
7243         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
7244         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
7245         if (!vsi->tx_rings)
7246                 return -ENOMEM;
7247         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
7248
7249         if (alloc_qvectors) {
7250                 /* allocate memory for q_vector pointers */
7251                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
7252                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
7253                 if (!vsi->q_vectors) {
7254                         ret = -ENOMEM;
7255                         goto err_vectors;
7256                 }
7257         }
7258         return ret;
7259
7260 err_vectors:
7261         kfree(vsi->tx_rings);
7262         return ret;
7263 }
7264
7265 /**
7266  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
7267  * @pf: board private structure
7268  * @type: type of VSI
7269  *
7270  * On error: returns error code (negative)
7271  * On success: returns vsi index in PF (positive)
7272  **/
7273 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
7274 {
7275         int ret = -ENODEV;
7276         struct i40e_vsi *vsi;
7277         int vsi_idx;
7278         int i;
7279
7280         /* Need to protect the allocation of the VSIs at the PF level */
7281         mutex_lock(&pf->switch_mutex);
7282
7283         /* VSI list may be fragmented if VSI creation/destruction has
7284          * been happening.  We can afford to do a quick scan to look
7285          * for any free VSIs in the list.
7286          *
7287          * find next empty vsi slot, looping back around if necessary
7288          */
7289         i = pf->next_vsi;
7290         while (i < pf->num_alloc_vsi && pf->vsi[i])
7291                 i++;
7292         if (i >= pf->num_alloc_vsi) {
7293                 i = 0;
7294                 while (i < pf->next_vsi && pf->vsi[i])
7295                         i++;
7296         }
7297
7298         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
7299                 vsi_idx = i;             /* Found one! */
7300         } else {
7301                 ret = -ENODEV;
7302                 goto unlock_pf;  /* out of VSI slots! */
7303         }
7304         pf->next_vsi = ++i;
7305
7306         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
7307         if (!vsi) {
7308                 ret = -ENOMEM;
7309                 goto unlock_pf;
7310         }
7311         vsi->type = type;
7312         vsi->back = pf;
7313         set_bit(__I40E_DOWN, &vsi->state);
7314         vsi->flags = 0;
7315         vsi->idx = vsi_idx;
7316         vsi->int_rate_limit = 0;
7317         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
7318                                 pf->rss_table_size : 64;
7319         vsi->netdev_registered = false;
7320         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
7321         INIT_LIST_HEAD(&vsi->mac_filter_list);
7322         vsi->irqs_ready = false;
7323
7324         ret = i40e_set_num_rings_in_vsi(vsi);
7325         if (ret)
7326                 goto err_rings;
7327
7328         ret = i40e_vsi_alloc_arrays(vsi, true);
7329         if (ret)
7330                 goto err_rings;
7331
7332         /* Setup default MSIX irq handler for VSI */
7333         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
7334
7335         /* Initialize VSI lock */
7336         spin_lock_init(&vsi->mac_filter_list_lock);
7337         pf->vsi[vsi_idx] = vsi;
7338         ret = vsi_idx;
7339         goto unlock_pf;
7340
7341 err_rings:
7342         pf->next_vsi = i - 1;
7343         kfree(vsi);
7344 unlock_pf:
7345         mutex_unlock(&pf->switch_mutex);
7346         return ret;
7347 }
7348
7349 /**
7350  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
7351  * @type: VSI pointer
7352  * @free_qvectors: a bool to specify if q_vectors need to be freed.
7353  *
7354  * On error: returns error code (negative)
7355  * On success: returns 0
7356  **/
7357 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
7358 {
7359         /* free the ring and vector containers */
7360         if (free_qvectors) {
7361                 kfree(vsi->q_vectors);
7362                 vsi->q_vectors = NULL;
7363         }
7364         kfree(vsi->tx_rings);
7365         vsi->tx_rings = NULL;
7366         vsi->rx_rings = NULL;
7367 }
7368
7369 /**
7370  * i40e_clear_rss_config_user - clear the user configured RSS hash keys
7371  * and lookup table
7372  * @vsi: Pointer to VSI structure
7373  */
7374 static void i40e_clear_rss_config_user(struct i40e_vsi *vsi)
7375 {
7376         if (!vsi)
7377                 return;
7378
7379         kfree(vsi->rss_hkey_user);
7380         vsi->rss_hkey_user = NULL;
7381
7382         kfree(vsi->rss_lut_user);
7383         vsi->rss_lut_user = NULL;
7384 }
7385
7386 /**
7387  * i40e_vsi_clear - Deallocate the VSI provided
7388  * @vsi: the VSI being un-configured
7389  **/
7390 static int i40e_vsi_clear(struct i40e_vsi *vsi)
7391 {
7392         struct i40e_pf *pf;
7393
7394         if (!vsi)
7395                 return 0;
7396
7397         if (!vsi->back)
7398                 goto free_vsi;
7399         pf = vsi->back;
7400
7401         mutex_lock(&pf->switch_mutex);
7402         if (!pf->vsi[vsi->idx]) {
7403                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
7404                         vsi->idx, vsi->idx, vsi, vsi->type);
7405                 goto unlock_vsi;
7406         }
7407
7408         if (pf->vsi[vsi->idx] != vsi) {
7409                 dev_err(&pf->pdev->dev,
7410                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
7411                         pf->vsi[vsi->idx]->idx,
7412                         pf->vsi[vsi->idx],
7413                         pf->vsi[vsi->idx]->type,
7414                         vsi->idx, vsi, vsi->type);
7415                 goto unlock_vsi;
7416         }
7417
7418         /* updates the PF for this cleared vsi */
7419         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7420         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
7421
7422         i40e_vsi_free_arrays(vsi, true);
7423         i40e_clear_rss_config_user(vsi);
7424
7425         pf->vsi[vsi->idx] = NULL;
7426         if (vsi->idx < pf->next_vsi)
7427                 pf->next_vsi = vsi->idx;
7428
7429 unlock_vsi:
7430         mutex_unlock(&pf->switch_mutex);
7431 free_vsi:
7432         kfree(vsi);
7433
7434         return 0;
7435 }
7436
7437 /**
7438  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
7439  * @vsi: the VSI being cleaned
7440  **/
7441 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
7442 {
7443         int i;
7444
7445         if (vsi->tx_rings && vsi->tx_rings[0]) {
7446                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7447                         kfree_rcu(vsi->tx_rings[i], rcu);
7448                         vsi->tx_rings[i] = NULL;
7449                         vsi->rx_rings[i] = NULL;
7450                 }
7451         }
7452 }
7453
7454 /**
7455  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
7456  * @vsi: the VSI being configured
7457  **/
7458 static int i40e_alloc_rings(struct i40e_vsi *vsi)
7459 {
7460         struct i40e_ring *tx_ring, *rx_ring;
7461         struct i40e_pf *pf = vsi->back;
7462         int i;
7463
7464         /* Set basic values in the rings to be used later during open() */
7465         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7466                 /* allocate space for both Tx and Rx in one shot */
7467                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
7468                 if (!tx_ring)
7469                         goto err_out;
7470
7471                 tx_ring->queue_index = i;
7472                 tx_ring->reg_idx = vsi->base_queue + i;
7473                 tx_ring->ring_active = false;
7474                 tx_ring->vsi = vsi;
7475                 tx_ring->netdev = vsi->netdev;
7476                 tx_ring->dev = &pf->pdev->dev;
7477                 tx_ring->count = vsi->num_desc;
7478                 tx_ring->size = 0;
7479                 tx_ring->dcb_tc = 0;
7480                 if (vsi->back->flags & I40E_FLAG_WB_ON_ITR_CAPABLE)
7481                         tx_ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
7482                 tx_ring->tx_itr_setting = pf->tx_itr_default;
7483                 vsi->tx_rings[i] = tx_ring;
7484
7485                 rx_ring = &tx_ring[1];
7486                 rx_ring->queue_index = i;
7487                 rx_ring->reg_idx = vsi->base_queue + i;
7488                 rx_ring->ring_active = false;
7489                 rx_ring->vsi = vsi;
7490                 rx_ring->netdev = vsi->netdev;
7491                 rx_ring->dev = &pf->pdev->dev;
7492                 rx_ring->count = vsi->num_desc;
7493                 rx_ring->size = 0;
7494                 rx_ring->dcb_tc = 0;
7495                 rx_ring->rx_itr_setting = pf->rx_itr_default;
7496                 vsi->rx_rings[i] = rx_ring;
7497         }
7498
7499         return 0;
7500
7501 err_out:
7502         i40e_vsi_clear_rings(vsi);
7503         return -ENOMEM;
7504 }
7505
7506 /**
7507  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
7508  * @pf: board private structure
7509  * @vectors: the number of MSI-X vectors to request
7510  *
7511  * Returns the number of vectors reserved, or error
7512  **/
7513 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
7514 {
7515         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
7516                                         I40E_MIN_MSIX, vectors);
7517         if (vectors < 0) {
7518                 dev_info(&pf->pdev->dev,
7519                          "MSI-X vector reservation failed: %d\n", vectors);
7520                 vectors = 0;
7521         }
7522
7523         return vectors;
7524 }
7525
7526 /**
7527  * i40e_init_msix - Setup the MSIX capability
7528  * @pf: board private structure
7529  *
7530  * Work with the OS to set up the MSIX vectors needed.
7531  *
7532  * Returns the number of vectors reserved or negative on failure
7533  **/
7534 static int i40e_init_msix(struct i40e_pf *pf)
7535 {
7536         struct i40e_hw *hw = &pf->hw;
7537         int vectors_left;
7538         int v_budget, i;
7539         int v_actual;
7540         int iwarp_requested = 0;
7541
7542         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
7543                 return -ENODEV;
7544
7545         /* The number of vectors we'll request will be comprised of:
7546          *   - Add 1 for "other" cause for Admin Queue events, etc.
7547          *   - The number of LAN queue pairs
7548          *      - Queues being used for RSS.
7549          *              We don't need as many as max_rss_size vectors.
7550          *              use rss_size instead in the calculation since that
7551          *              is governed by number of cpus in the system.
7552          *      - assumes symmetric Tx/Rx pairing
7553          *   - The number of VMDq pairs
7554          *   - The CPU count within the NUMA node if iWARP is enabled
7555 #ifdef I40E_FCOE
7556          *   - The number of FCOE qps.
7557 #endif
7558          * Once we count this up, try the request.
7559          *
7560          * If we can't get what we want, we'll simplify to nearly nothing
7561          * and try again.  If that still fails, we punt.
7562          */
7563         vectors_left = hw->func_caps.num_msix_vectors;
7564         v_budget = 0;
7565
7566         /* reserve one vector for miscellaneous handler */
7567         if (vectors_left) {
7568                 v_budget++;
7569                 vectors_left--;
7570         }
7571
7572         /* reserve vectors for the main PF traffic queues */
7573         pf->num_lan_msix = min_t(int, num_online_cpus(), vectors_left);
7574         vectors_left -= pf->num_lan_msix;
7575         v_budget += pf->num_lan_msix;
7576
7577         /* reserve one vector for sideband flow director */
7578         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7579                 if (vectors_left) {
7580                         pf->num_fdsb_msix = 1;
7581                         v_budget++;
7582                         vectors_left--;
7583                 } else {
7584                         pf->num_fdsb_msix = 0;
7585                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7586                 }
7587         }
7588
7589 #ifdef I40E_FCOE
7590         /* can we reserve enough for FCoE? */
7591         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7592                 if (!vectors_left)
7593                         pf->num_fcoe_msix = 0;
7594                 else if (vectors_left >= pf->num_fcoe_qps)
7595                         pf->num_fcoe_msix = pf->num_fcoe_qps;
7596                 else
7597                         pf->num_fcoe_msix = 1;
7598                 v_budget += pf->num_fcoe_msix;
7599                 vectors_left -= pf->num_fcoe_msix;
7600         }
7601
7602 #endif
7603         /* can we reserve enough for iWARP? */
7604         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
7605                 if (!vectors_left)
7606                         pf->num_iwarp_msix = 0;
7607                 else if (vectors_left < pf->num_iwarp_msix)
7608                         pf->num_iwarp_msix = 1;
7609                 v_budget += pf->num_iwarp_msix;
7610                 vectors_left -= pf->num_iwarp_msix;
7611         }
7612
7613         /* any vectors left over go for VMDq support */
7614         if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
7615                 int vmdq_vecs_wanted = pf->num_vmdq_vsis * pf->num_vmdq_qps;
7616                 int vmdq_vecs = min_t(int, vectors_left, vmdq_vecs_wanted);
7617
7618                 /* if we're short on vectors for what's desired, we limit
7619                  * the queues per vmdq.  If this is still more than are
7620                  * available, the user will need to change the number of
7621                  * queues/vectors used by the PF later with the ethtool
7622                  * channels command
7623                  */
7624                 if (vmdq_vecs < vmdq_vecs_wanted)
7625                         pf->num_vmdq_qps = 1;
7626                 pf->num_vmdq_msix = pf->num_vmdq_qps;
7627
7628                 v_budget += vmdq_vecs;
7629                 vectors_left -= vmdq_vecs;
7630         }
7631
7632         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
7633                                    GFP_KERNEL);
7634         if (!pf->msix_entries)
7635                 return -ENOMEM;
7636
7637         for (i = 0; i < v_budget; i++)
7638                 pf->msix_entries[i].entry = i;
7639         v_actual = i40e_reserve_msix_vectors(pf, v_budget);
7640
7641         if (v_actual != v_budget) {
7642                 /* If we have limited resources, we will start with no vectors
7643                  * for the special features and then allocate vectors to some
7644                  * of these features based on the policy and at the end disable
7645                  * the features that did not get any vectors.
7646                  */
7647                 iwarp_requested = pf->num_iwarp_msix;
7648                 pf->num_iwarp_msix = 0;
7649 #ifdef I40E_FCOE
7650                 pf->num_fcoe_qps = 0;
7651                 pf->num_fcoe_msix = 0;
7652 #endif
7653                 pf->num_vmdq_msix = 0;
7654         }
7655
7656         if (v_actual < I40E_MIN_MSIX) {
7657                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
7658                 kfree(pf->msix_entries);
7659                 pf->msix_entries = NULL;
7660                 return -ENODEV;
7661
7662         } else if (v_actual == I40E_MIN_MSIX) {
7663                 /* Adjust for minimal MSIX use */
7664                 pf->num_vmdq_vsis = 0;
7665                 pf->num_vmdq_qps = 0;
7666                 pf->num_lan_qps = 1;
7667                 pf->num_lan_msix = 1;
7668
7669         } else if (v_actual != v_budget) {
7670                 int vec;
7671
7672                 /* reserve the misc vector */
7673                 vec = v_actual - 1;
7674
7675                 /* Scale vector usage down */
7676                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
7677                 pf->num_vmdq_vsis = 1;
7678                 pf->num_vmdq_qps = 1;
7679                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7680
7681                 /* partition out the remaining vectors */
7682                 switch (vec) {
7683                 case 2:
7684                         pf->num_lan_msix = 1;
7685                         break;
7686                 case 3:
7687                         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
7688                                 pf->num_lan_msix = 1;
7689                                 pf->num_iwarp_msix = 1;
7690                         } else {
7691                                 pf->num_lan_msix = 2;
7692                         }
7693 #ifdef I40E_FCOE
7694                         /* give one vector to FCoE */
7695                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7696                                 pf->num_lan_msix = 1;
7697                                 pf->num_fcoe_msix = 1;
7698                         }
7699 #endif
7700                         break;
7701                 default:
7702                         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
7703                                 pf->num_iwarp_msix = min_t(int, (vec / 3),
7704                                                  iwarp_requested);
7705                                 pf->num_vmdq_vsis = min_t(int, (vec / 3),
7706                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
7707                         } else {
7708                                 pf->num_vmdq_vsis = min_t(int, (vec / 2),
7709                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
7710                         }
7711                         pf->num_lan_msix = min_t(int,
7712                                (vec - (pf->num_iwarp_msix + pf->num_vmdq_vsis)),
7713                                                               pf->num_lan_msix);
7714 #ifdef I40E_FCOE
7715                         /* give one vector to FCoE */
7716                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7717                                 pf->num_fcoe_msix = 1;
7718                                 vec--;
7719                         }
7720 #endif
7721                         break;
7722                 }
7723         }
7724
7725         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7726             (pf->num_vmdq_msix == 0)) {
7727                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
7728                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
7729         }
7730
7731         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
7732             (pf->num_iwarp_msix == 0)) {
7733                 dev_info(&pf->pdev->dev, "IWARP disabled, not enough MSI-X vectors\n");
7734                 pf->flags &= ~I40E_FLAG_IWARP_ENABLED;
7735         }
7736 #ifdef I40E_FCOE
7737
7738         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
7739                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
7740                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
7741         }
7742 #endif
7743         return v_actual;
7744 }
7745
7746 /**
7747  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7748  * @vsi: the VSI being configured
7749  * @v_idx: index of the vector in the vsi struct
7750  * @cpu: cpu to be used on affinity_mask
7751  *
7752  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
7753  **/
7754 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx, int cpu)
7755 {
7756         struct i40e_q_vector *q_vector;
7757
7758         /* allocate q_vector */
7759         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
7760         if (!q_vector)
7761                 return -ENOMEM;
7762
7763         q_vector->vsi = vsi;
7764         q_vector->v_idx = v_idx;
7765         cpumask_set_cpu(cpu, &q_vector->affinity_mask);
7766
7767         if (vsi->netdev)
7768                 netif_napi_add(vsi->netdev, &q_vector->napi,
7769                                i40e_napi_poll, NAPI_POLL_WEIGHT);
7770
7771         q_vector->rx.latency_range = I40E_LOW_LATENCY;
7772         q_vector->tx.latency_range = I40E_LOW_LATENCY;
7773
7774         /* tie q_vector and vsi together */
7775         vsi->q_vectors[v_idx] = q_vector;
7776
7777         return 0;
7778 }
7779
7780 /**
7781  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
7782  * @vsi: the VSI being configured
7783  *
7784  * We allocate one q_vector per queue interrupt.  If allocation fails we
7785  * return -ENOMEM.
7786  **/
7787 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
7788 {
7789         struct i40e_pf *pf = vsi->back;
7790         int err, v_idx, num_q_vectors, current_cpu;
7791
7792         /* if not MSIX, give the one vector only to the LAN VSI */
7793         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7794                 num_q_vectors = vsi->num_q_vectors;
7795         else if (vsi == pf->vsi[pf->lan_vsi])
7796                 num_q_vectors = 1;
7797         else
7798                 return -EINVAL;
7799
7800         current_cpu = cpumask_first(cpu_online_mask);
7801
7802         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
7803                 err = i40e_vsi_alloc_q_vector(vsi, v_idx, current_cpu);
7804                 if (err)
7805                         goto err_out;
7806                 current_cpu = cpumask_next(current_cpu, cpu_online_mask);
7807                 if (unlikely(current_cpu >= nr_cpu_ids))
7808                         current_cpu = cpumask_first(cpu_online_mask);
7809         }
7810
7811         return 0;
7812
7813 err_out:
7814         while (v_idx--)
7815                 i40e_free_q_vector(vsi, v_idx);
7816
7817         return err;
7818 }
7819
7820 /**
7821  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
7822  * @pf: board private structure to initialize
7823  **/
7824 static int i40e_init_interrupt_scheme(struct i40e_pf *pf)
7825 {
7826         int vectors = 0;
7827         ssize_t size;
7828
7829         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7830                 vectors = i40e_init_msix(pf);
7831                 if (vectors < 0) {
7832                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
7833                                        I40E_FLAG_IWARP_ENABLED  |
7834 #ifdef I40E_FCOE
7835                                        I40E_FLAG_FCOE_ENABLED   |
7836 #endif
7837                                        I40E_FLAG_RSS_ENABLED    |
7838                                        I40E_FLAG_DCB_CAPABLE    |
7839                                        I40E_FLAG_SRIOV_ENABLED  |
7840                                        I40E_FLAG_FD_SB_ENABLED  |
7841                                        I40E_FLAG_FD_ATR_ENABLED |
7842                                        I40E_FLAG_VMDQ_ENABLED);
7843
7844                         /* rework the queue expectations without MSIX */
7845                         i40e_determine_queue_usage(pf);
7846                 }
7847         }
7848
7849         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
7850             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
7851                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
7852                 vectors = pci_enable_msi(pf->pdev);
7853                 if (vectors < 0) {
7854                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
7855                                  vectors);
7856                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
7857                 }
7858                 vectors = 1;  /* one MSI or Legacy vector */
7859         }
7860
7861         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
7862                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
7863
7864         /* set up vector assignment tracking */
7865         size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
7866         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7867         if (!pf->irq_pile) {
7868                 dev_err(&pf->pdev->dev, "error allocating irq_pile memory\n");
7869                 return -ENOMEM;
7870         }
7871         pf->irq_pile->num_entries = vectors;
7872         pf->irq_pile->search_hint = 0;
7873
7874         /* track first vector for misc interrupts, ignore return */
7875         (void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
7876
7877         return 0;
7878 }
7879
7880 /**
7881  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
7882  * @pf: board private structure
7883  *
7884  * This sets up the handler for MSIX 0, which is used to manage the
7885  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
7886  * when in MSI or Legacy interrupt mode.
7887  **/
7888 static int i40e_setup_misc_vector(struct i40e_pf *pf)
7889 {
7890         struct i40e_hw *hw = &pf->hw;
7891         int err = 0;
7892
7893         /* Only request the irq if this is the first time through, and
7894          * not when we're rebuilding after a Reset
7895          */
7896         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7897                 err = request_irq(pf->msix_entries[0].vector,
7898                                   i40e_intr, 0, pf->int_name, pf);
7899                 if (err) {
7900                         dev_info(&pf->pdev->dev,
7901                                  "request_irq for %s failed: %d\n",
7902                                  pf->int_name, err);
7903                         return -EFAULT;
7904                 }
7905         }
7906
7907         i40e_enable_misc_int_causes(pf);
7908
7909         /* associate no queues to the misc vector */
7910         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
7911         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
7912
7913         i40e_flush(hw);
7914
7915         i40e_irq_dynamic_enable_icr0(pf, true);
7916
7917         return err;
7918 }
7919
7920 /**
7921  * i40e_config_rss_aq - Prepare for RSS using AQ commands
7922  * @vsi: vsi structure
7923  * @seed: RSS hash seed
7924  **/
7925 static int i40e_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
7926                               u8 *lut, u16 lut_size)
7927 {
7928         struct i40e_aqc_get_set_rss_key_data rss_key;
7929         struct i40e_pf *pf = vsi->back;
7930         struct i40e_hw *hw = &pf->hw;
7931         bool pf_lut = false;
7932         u8 *rss_lut;
7933         int ret, i;
7934
7935         memset(&rss_key, 0, sizeof(rss_key));
7936         memcpy(&rss_key, seed, sizeof(rss_key));
7937
7938         rss_lut = kzalloc(pf->rss_table_size, GFP_KERNEL);
7939         if (!rss_lut)
7940                 return -ENOMEM;
7941
7942         /* Populate the LUT with max no. of queues in round robin fashion */
7943         for (i = 0; i < vsi->rss_table_size; i++)
7944                 rss_lut[i] = i % vsi->rss_size;
7945
7946         ret = i40e_aq_set_rss_key(hw, vsi->id, &rss_key);
7947         if (ret) {
7948                 dev_info(&pf->pdev->dev,
7949                          "Cannot set RSS key, err %s aq_err %s\n",
7950                          i40e_stat_str(&pf->hw, ret),
7951                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7952                 goto config_rss_aq_out;
7953         }
7954
7955         if (vsi->type == I40E_VSI_MAIN)
7956                 pf_lut = true;
7957
7958         ret = i40e_aq_set_rss_lut(hw, vsi->id, pf_lut, rss_lut,
7959                                   vsi->rss_table_size);
7960         if (ret)
7961                 dev_info(&pf->pdev->dev,
7962                          "Cannot set RSS lut, err %s aq_err %s\n",
7963                          i40e_stat_str(&pf->hw, ret),
7964                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7965
7966 config_rss_aq_out:
7967         kfree(rss_lut);
7968         return ret;
7969 }
7970
7971 /**
7972  * i40e_vsi_config_rss - Prepare for VSI(VMDq) RSS if used
7973  * @vsi: VSI structure
7974  **/
7975 static int i40e_vsi_config_rss(struct i40e_vsi *vsi)
7976 {
7977         u8 seed[I40E_HKEY_ARRAY_SIZE];
7978         struct i40e_pf *pf = vsi->back;
7979         u8 *lut;
7980         int ret;
7981
7982         if (!(pf->flags & I40E_FLAG_RSS_AQ_CAPABLE))
7983                 return 0;
7984
7985         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
7986         if (!lut)
7987                 return -ENOMEM;
7988
7989         i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
7990         netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
7991         vsi->rss_size = min_t(int, pf->alloc_rss_size, vsi->num_queue_pairs);
7992         ret = i40e_config_rss_aq(vsi, seed, lut, vsi->rss_table_size);
7993         kfree(lut);
7994
7995         return ret;
7996 }
7997
7998 /**
7999  * i40e_get_rss_aq - Get RSS keys and lut by using AQ commands
8000  * @vsi: Pointer to vsi structure
8001  * @seed: Buffter to store the hash keys
8002  * @lut: Buffer to store the lookup table entries
8003  * @lut_size: Size of buffer to store the lookup table entries
8004  *
8005  * Return 0 on success, negative on failure
8006  */
8007 static int i40e_get_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
8008                            u8 *lut, u16 lut_size)
8009 {
8010         struct i40e_pf *pf = vsi->back;
8011         struct i40e_hw *hw = &pf->hw;
8012         int ret = 0;
8013
8014         if (seed) {
8015                 ret = i40e_aq_get_rss_key(hw, vsi->id,
8016                         (struct i40e_aqc_get_set_rss_key_data *)seed);
8017                 if (ret) {
8018                         dev_info(&pf->pdev->dev,
8019                                  "Cannot get RSS key, err %s aq_err %s\n",
8020                                  i40e_stat_str(&pf->hw, ret),
8021                                  i40e_aq_str(&pf->hw,
8022                                              pf->hw.aq.asq_last_status));
8023                         return ret;
8024                 }
8025         }
8026
8027         if (lut) {
8028                 bool pf_lut = vsi->type == I40E_VSI_MAIN ? true : false;
8029
8030                 ret = i40e_aq_get_rss_lut(hw, vsi->id, pf_lut, lut, lut_size);
8031                 if (ret) {
8032                         dev_info(&pf->pdev->dev,
8033                                  "Cannot get RSS lut, err %s aq_err %s\n",
8034                                  i40e_stat_str(&pf->hw, ret),
8035                                  i40e_aq_str(&pf->hw,
8036                                              pf->hw.aq.asq_last_status));
8037                         return ret;
8038                 }
8039         }
8040
8041         return ret;
8042 }
8043
8044 /**
8045  * i40e_config_rss_reg - Configure RSS keys and lut by writing registers
8046  * @vsi: Pointer to vsi structure
8047  * @seed: RSS hash seed
8048  * @lut: Lookup table
8049  * @lut_size: Lookup table size
8050  *
8051  * Returns 0 on success, negative on failure
8052  **/
8053 static int i40e_config_rss_reg(struct i40e_vsi *vsi, const u8 *seed,
8054                                const u8 *lut, u16 lut_size)
8055 {
8056         struct i40e_pf *pf = vsi->back;
8057         struct i40e_hw *hw = &pf->hw;
8058         u16 vf_id = vsi->vf_id;
8059         u8 i;
8060
8061         /* Fill out hash function seed */
8062         if (seed) {
8063                 u32 *seed_dw = (u32 *)seed;
8064
8065                 if (vsi->type == I40E_VSI_MAIN) {
8066                         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
8067                                 i40e_write_rx_ctl(hw, I40E_PFQF_HKEY(i),
8068                                                   seed_dw[i]);
8069                 } else if (vsi->type == I40E_VSI_SRIOV) {
8070                         for (i = 0; i <= I40E_VFQF_HKEY1_MAX_INDEX; i++)
8071                                 i40e_write_rx_ctl(hw,
8072                                                   I40E_VFQF_HKEY1(i, vf_id),
8073                                                   seed_dw[i]);
8074                 } else {
8075                         dev_err(&pf->pdev->dev, "Cannot set RSS seed - invalid VSI type\n");
8076                 }
8077         }
8078
8079         if (lut) {
8080                 u32 *lut_dw = (u32 *)lut;
8081
8082                 if (vsi->type == I40E_VSI_MAIN) {
8083                         if (lut_size != I40E_HLUT_ARRAY_SIZE)
8084                                 return -EINVAL;
8085                         for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
8086                                 wr32(hw, I40E_PFQF_HLUT(i), lut_dw[i]);
8087                 } else if (vsi->type == I40E_VSI_SRIOV) {
8088                         if (lut_size != I40E_VF_HLUT_ARRAY_SIZE)
8089                                 return -EINVAL;
8090                         for (i = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++)
8091                                 i40e_write_rx_ctl(hw,
8092                                                   I40E_VFQF_HLUT1(i, vf_id),
8093                                                   lut_dw[i]);
8094                 } else {
8095                         dev_err(&pf->pdev->dev, "Cannot set RSS LUT - invalid VSI type\n");
8096                 }
8097         }
8098         i40e_flush(hw);
8099
8100         return 0;
8101 }
8102
8103 /**
8104  * i40e_get_rss_reg - Get the RSS keys and lut by reading registers
8105  * @vsi: Pointer to VSI structure
8106  * @seed: Buffer to store the keys
8107  * @lut: Buffer to store the lookup table entries
8108  * @lut_size: Size of buffer to store the lookup table entries
8109  *
8110  * Returns 0 on success, negative on failure
8111  */
8112 static int i40e_get_rss_reg(struct i40e_vsi *vsi, u8 *seed,
8113                             u8 *lut, u16 lut_size)
8114 {
8115         struct i40e_pf *pf = vsi->back;
8116         struct i40e_hw *hw = &pf->hw;
8117         u16 i;
8118
8119         if (seed) {
8120                 u32 *seed_dw = (u32 *)seed;
8121
8122                 for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
8123                         seed_dw[i] = i40e_read_rx_ctl(hw, I40E_PFQF_HKEY(i));
8124         }
8125         if (lut) {
8126                 u32 *lut_dw = (u32 *)lut;
8127
8128                 if (lut_size != I40E_HLUT_ARRAY_SIZE)
8129                         return -EINVAL;
8130                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
8131                         lut_dw[i] = rd32(hw, I40E_PFQF_HLUT(i));
8132         }
8133
8134         return 0;
8135 }
8136
8137 /**
8138  * i40e_config_rss - Configure RSS keys and lut
8139  * @vsi: Pointer to VSI structure
8140  * @seed: RSS hash seed
8141  * @lut: Lookup table
8142  * @lut_size: Lookup table size
8143  *
8144  * Returns 0 on success, negative on failure
8145  */
8146 int i40e_config_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
8147 {
8148         struct i40e_pf *pf = vsi->back;
8149
8150         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
8151                 return i40e_config_rss_aq(vsi, seed, lut, lut_size);
8152         else
8153                 return i40e_config_rss_reg(vsi, seed, lut, lut_size);
8154 }
8155
8156 /**
8157  * i40e_get_rss - Get RSS keys and lut
8158  * @vsi: Pointer to VSI structure
8159  * @seed: Buffer to store the keys
8160  * @lut: Buffer to store the lookup table entries
8161  * lut_size: Size of buffer to store the lookup table entries
8162  *
8163  * Returns 0 on success, negative on failure
8164  */
8165 int i40e_get_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
8166 {
8167         struct i40e_pf *pf = vsi->back;
8168
8169         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
8170                 return i40e_get_rss_aq(vsi, seed, lut, lut_size);
8171         else
8172                 return i40e_get_rss_reg(vsi, seed, lut, lut_size);
8173 }
8174
8175 /**
8176  * i40e_fill_rss_lut - Fill the RSS lookup table with default values
8177  * @pf: Pointer to board private structure
8178  * @lut: Lookup table
8179  * @rss_table_size: Lookup table size
8180  * @rss_size: Range of queue number for hashing
8181  */
8182 static void i40e_fill_rss_lut(struct i40e_pf *pf, u8 *lut,
8183                               u16 rss_table_size, u16 rss_size)
8184 {
8185         u16 i;
8186
8187         for (i = 0; i < rss_table_size; i++)
8188                 lut[i] = i % rss_size;
8189 }
8190
8191 /**
8192  * i40e_pf_config_rss - Prepare for RSS if used
8193  * @pf: board private structure
8194  **/
8195 static int i40e_pf_config_rss(struct i40e_pf *pf)
8196 {
8197         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
8198         u8 seed[I40E_HKEY_ARRAY_SIZE];
8199         u8 *lut;
8200         struct i40e_hw *hw = &pf->hw;
8201         u32 reg_val;
8202         u64 hena;
8203         int ret;
8204
8205         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
8206         hena = (u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(0)) |
8207                 ((u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(1)) << 32);
8208         hena |= i40e_pf_get_default_rss_hena(pf);
8209
8210         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), (u32)hena);
8211         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
8212
8213         /* Determine the RSS table size based on the hardware capabilities */
8214         reg_val = i40e_read_rx_ctl(hw, I40E_PFQF_CTL_0);
8215         reg_val = (pf->rss_table_size == 512) ?
8216                         (reg_val | I40E_PFQF_CTL_0_HASHLUTSIZE_512) :
8217                         (reg_val & ~I40E_PFQF_CTL_0_HASHLUTSIZE_512);
8218         i40e_write_rx_ctl(hw, I40E_PFQF_CTL_0, reg_val);
8219
8220         /* Determine the RSS size of the VSI */
8221         if (!vsi->rss_size)
8222                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8223                                       vsi->num_queue_pairs);
8224
8225         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
8226         if (!lut)
8227                 return -ENOMEM;
8228
8229         /* Use user configured lut if there is one, otherwise use default */
8230         if (vsi->rss_lut_user)
8231                 memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
8232         else
8233                 i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
8234
8235         /* Use user configured hash key if there is one, otherwise
8236          * use default.
8237          */
8238         if (vsi->rss_hkey_user)
8239                 memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
8240         else
8241                 netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
8242         ret = i40e_config_rss(vsi, seed, lut, vsi->rss_table_size);
8243         kfree(lut);
8244
8245         return ret;
8246 }
8247
8248 /**
8249  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
8250  * @pf: board private structure
8251  * @queue_count: the requested queue count for rss.
8252  *
8253  * returns 0 if rss is not enabled, if enabled returns the final rss queue
8254  * count which may be different from the requested queue count.
8255  **/
8256 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
8257 {
8258         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
8259         int new_rss_size;
8260
8261         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
8262                 return 0;
8263
8264         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
8265
8266         if (queue_count != vsi->num_queue_pairs) {
8267                 vsi->req_queue_pairs = queue_count;
8268                 i40e_prep_for_reset(pf);
8269
8270                 pf->alloc_rss_size = new_rss_size;
8271
8272                 i40e_reset_and_rebuild(pf, true);
8273
8274                 /* Discard the user configured hash keys and lut, if less
8275                  * queues are enabled.
8276                  */
8277                 if (queue_count < vsi->rss_size) {
8278                         i40e_clear_rss_config_user(vsi);
8279                         dev_dbg(&pf->pdev->dev,
8280                                 "discard user configured hash keys and lut\n");
8281                 }
8282
8283                 /* Reset vsi->rss_size, as number of enabled queues changed */
8284                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8285                                       vsi->num_queue_pairs);
8286
8287                 i40e_pf_config_rss(pf);
8288         }
8289         dev_info(&pf->pdev->dev, "RSS count/HW max RSS count:  %d/%d\n",
8290                  pf->alloc_rss_size, pf->rss_size_max);
8291         return pf->alloc_rss_size;
8292 }
8293
8294 /**
8295  * i40e_get_npar_bw_setting - Retrieve BW settings for this PF partition
8296  * @pf: board private structure
8297  **/
8298 i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf)
8299 {
8300         i40e_status status;
8301         bool min_valid, max_valid;
8302         u32 max_bw, min_bw;
8303
8304         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
8305                                            &min_valid, &max_valid);
8306
8307         if (!status) {
8308                 if (min_valid)
8309                         pf->npar_min_bw = min_bw;
8310                 if (max_valid)
8311                         pf->npar_max_bw = max_bw;
8312         }
8313
8314         return status;
8315 }
8316
8317 /**
8318  * i40e_set_npar_bw_setting - Set BW settings for this PF partition
8319  * @pf: board private structure
8320  **/
8321 i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf)
8322 {
8323         struct i40e_aqc_configure_partition_bw_data bw_data;
8324         i40e_status status;
8325
8326         /* Set the valid bit for this PF */
8327         bw_data.pf_valid_bits = cpu_to_le16(BIT(pf->hw.pf_id));
8328         bw_data.max_bw[pf->hw.pf_id] = pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK;
8329         bw_data.min_bw[pf->hw.pf_id] = pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK;
8330
8331         /* Set the new bandwidths */
8332         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
8333
8334         return status;
8335 }
8336
8337 /**
8338  * i40e_commit_npar_bw_setting - Commit BW settings for this PF partition
8339  * @pf: board private structure
8340  **/
8341 i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf)
8342 {
8343         /* Commit temporary BW setting to permanent NVM image */
8344         enum i40e_admin_queue_err last_aq_status;
8345         i40e_status ret;
8346         u16 nvm_word;
8347
8348         if (pf->hw.partition_id != 1) {
8349                 dev_info(&pf->pdev->dev,
8350                          "Commit BW only works on partition 1! This is partition %d",
8351                          pf->hw.partition_id);
8352                 ret = I40E_NOT_SUPPORTED;
8353                 goto bw_commit_out;
8354         }
8355
8356         /* Acquire NVM for read access */
8357         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
8358         last_aq_status = pf->hw.aq.asq_last_status;
8359         if (ret) {
8360                 dev_info(&pf->pdev->dev,
8361                          "Cannot acquire NVM for read access, err %s aq_err %s\n",
8362                          i40e_stat_str(&pf->hw, ret),
8363                          i40e_aq_str(&pf->hw, last_aq_status));
8364                 goto bw_commit_out;
8365         }
8366
8367         /* Read word 0x10 of NVM - SW compatibility word 1 */
8368         ret = i40e_aq_read_nvm(&pf->hw,
8369                                I40E_SR_NVM_CONTROL_WORD,
8370                                0x10, sizeof(nvm_word), &nvm_word,
8371                                false, NULL);
8372         /* Save off last admin queue command status before releasing
8373          * the NVM
8374          */
8375         last_aq_status = pf->hw.aq.asq_last_status;
8376         i40e_release_nvm(&pf->hw);
8377         if (ret) {
8378                 dev_info(&pf->pdev->dev, "NVM read error, err %s aq_err %s\n",
8379                          i40e_stat_str(&pf->hw, ret),
8380                          i40e_aq_str(&pf->hw, last_aq_status));
8381                 goto bw_commit_out;
8382         }
8383
8384         /* Wait a bit for NVM release to complete */
8385         msleep(50);
8386
8387         /* Acquire NVM for write access */
8388         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
8389         last_aq_status = pf->hw.aq.asq_last_status;
8390         if (ret) {
8391                 dev_info(&pf->pdev->dev,
8392                          "Cannot acquire NVM for write access, err %s aq_err %s\n",
8393                          i40e_stat_str(&pf->hw, ret),
8394                          i40e_aq_str(&pf->hw, last_aq_status));
8395                 goto bw_commit_out;
8396         }
8397         /* Write it back out unchanged to initiate update NVM,
8398          * which will force a write of the shadow (alt) RAM to
8399          * the NVM - thus storing the bandwidth values permanently.
8400          */
8401         ret = i40e_aq_update_nvm(&pf->hw,
8402                                  I40E_SR_NVM_CONTROL_WORD,
8403                                  0x10, sizeof(nvm_word),
8404                                  &nvm_word, true, NULL);
8405         /* Save off last admin queue command status before releasing
8406          * the NVM
8407          */
8408         last_aq_status = pf->hw.aq.asq_last_status;
8409         i40e_release_nvm(&pf->hw);
8410         if (ret)
8411                 dev_info(&pf->pdev->dev,
8412                          "BW settings NOT SAVED, err %s aq_err %s\n",
8413                          i40e_stat_str(&pf->hw, ret),
8414                          i40e_aq_str(&pf->hw, last_aq_status));
8415 bw_commit_out:
8416
8417         return ret;
8418 }
8419
8420 /**
8421  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
8422  * @pf: board private structure to initialize
8423  *
8424  * i40e_sw_init initializes the Adapter private data structure.
8425  * Fields are initialized based on PCI device information and
8426  * OS network device settings (MTU size).
8427  **/
8428 static int i40e_sw_init(struct i40e_pf *pf)
8429 {
8430         int err = 0;
8431         int size;
8432
8433         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
8434                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
8435         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
8436                 if (I40E_DEBUG_USER & debug)
8437                         pf->hw.debug_mask = debug;
8438                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
8439                                                 I40E_DEFAULT_MSG_ENABLE);
8440         }
8441
8442         /* Set default capability flags */
8443         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
8444                     I40E_FLAG_MSI_ENABLED     |
8445                     I40E_FLAG_MSIX_ENABLED;
8446
8447         /* Set default ITR */
8448         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
8449         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
8450
8451         /* Depending on PF configurations, it is possible that the RSS
8452          * maximum might end up larger than the available queues
8453          */
8454         pf->rss_size_max = BIT(pf->hw.func_caps.rss_table_entry_width);
8455         pf->alloc_rss_size = 1;
8456         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
8457         pf->rss_size_max = min_t(int, pf->rss_size_max,
8458                                  pf->hw.func_caps.num_tx_qp);
8459         if (pf->hw.func_caps.rss) {
8460                 pf->flags |= I40E_FLAG_RSS_ENABLED;
8461                 pf->alloc_rss_size = min_t(int, pf->rss_size_max,
8462                                            num_online_cpus());
8463         }
8464
8465         /* MFP mode enabled */
8466         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.flex10_enable) {
8467                 pf->flags |= I40E_FLAG_MFP_ENABLED;
8468                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
8469                 if (i40e_get_npar_bw_setting(pf))
8470                         dev_warn(&pf->pdev->dev,
8471                                  "Could not get NPAR bw settings\n");
8472                 else
8473                         dev_info(&pf->pdev->dev,
8474                                  "Min BW = %8.8x, Max BW = %8.8x\n",
8475                                  pf->npar_min_bw, pf->npar_max_bw);
8476         }
8477
8478         /* FW/NVM is not yet fixed in this regard */
8479         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
8480             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
8481                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8482                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
8483                 if (pf->flags & I40E_FLAG_MFP_ENABLED &&
8484                     pf->hw.num_partitions > 1)
8485                         dev_info(&pf->pdev->dev,
8486                                  "Flow Director Sideband mode Disabled in MFP mode\n");
8487                 else
8488                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8489                 pf->fdir_pf_filter_count =
8490                                  pf->hw.func_caps.fd_filters_guaranteed;
8491                 pf->hw.fdir_shared_filter_count =
8492                                  pf->hw.func_caps.fd_filters_best_effort;
8493         }
8494
8495         if (i40e_is_mac_710(&pf->hw) &&
8496             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
8497             (pf->hw.aq.fw_maj_ver < 4))) {
8498                 pf->flags |= I40E_FLAG_RESTART_AUTONEG;
8499                 /* No DCB support  for FW < v4.33 */
8500                 pf->flags |= I40E_FLAG_NO_DCB_SUPPORT;
8501         }
8502
8503         /* Disable FW LLDP if FW < v4.3 */
8504         if (i40e_is_mac_710(&pf->hw) &&
8505             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
8506             (pf->hw.aq.fw_maj_ver < 4)))
8507                 pf->flags |= I40E_FLAG_STOP_FW_LLDP;
8508
8509         /* Use the FW Set LLDP MIB API if FW > v4.40 */
8510         if (i40e_is_mac_710(&pf->hw) &&
8511             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver >= 40)) ||
8512             (pf->hw.aq.fw_maj_ver >= 5)))
8513                 pf->flags |= I40E_FLAG_USE_SET_LLDP_MIB;
8514
8515         if (pf->hw.func_caps.vmdq) {
8516                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
8517                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
8518                 pf->num_vmdq_qps = i40e_default_queues_per_vmdq(pf);
8519         }
8520
8521         if (pf->hw.func_caps.iwarp) {
8522                 pf->flags |= I40E_FLAG_IWARP_ENABLED;
8523                 /* IWARP needs one extra vector for CQP just like MISC.*/
8524                 pf->num_iwarp_msix = (int)num_online_cpus() + 1;
8525         }
8526
8527 #ifdef I40E_FCOE
8528         i40e_init_pf_fcoe(pf);
8529
8530 #endif /* I40E_FCOE */
8531 #ifdef CONFIG_PCI_IOV
8532         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
8533                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
8534                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
8535                 pf->num_req_vfs = min_t(int,
8536                                         pf->hw.func_caps.num_vfs,
8537                                         I40E_MAX_VF_COUNT);
8538         }
8539 #endif /* CONFIG_PCI_IOV */
8540         if (pf->hw.mac.type == I40E_MAC_X722) {
8541                 pf->flags |= I40E_FLAG_RSS_AQ_CAPABLE |
8542                              I40E_FLAG_128_QP_RSS_CAPABLE |
8543                              I40E_FLAG_HW_ATR_EVICT_CAPABLE |
8544                              I40E_FLAG_OUTER_UDP_CSUM_CAPABLE |
8545                              I40E_FLAG_WB_ON_ITR_CAPABLE |
8546                              I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE |
8547                              I40E_FLAG_NO_PCI_LINK_CHECK |
8548                              I40E_FLAG_100M_SGMII_CAPABLE |
8549                              I40E_FLAG_USE_SET_LLDP_MIB |
8550                              I40E_FLAG_GENEVE_OFFLOAD_CAPABLE;
8551         } else if ((pf->hw.aq.api_maj_ver > 1) ||
8552                    ((pf->hw.aq.api_maj_ver == 1) &&
8553                     (pf->hw.aq.api_min_ver > 4))) {
8554                 /* Supported in FW API version higher than 1.4 */
8555                 pf->flags |= I40E_FLAG_GENEVE_OFFLOAD_CAPABLE;
8556                 pf->auto_disable_flags = I40E_FLAG_HW_ATR_EVICT_CAPABLE;
8557         } else {
8558                 pf->auto_disable_flags = I40E_FLAG_HW_ATR_EVICT_CAPABLE;
8559         }
8560
8561         pf->eeprom_version = 0xDEAD;
8562         pf->lan_veb = I40E_NO_VEB;
8563         pf->lan_vsi = I40E_NO_VSI;
8564
8565         /* By default FW has this off for performance reasons */
8566         pf->flags &= ~I40E_FLAG_VEB_STATS_ENABLED;
8567
8568         /* set up queue assignment tracking */
8569         size = sizeof(struct i40e_lump_tracking)
8570                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
8571         pf->qp_pile = kzalloc(size, GFP_KERNEL);
8572         if (!pf->qp_pile) {
8573                 err = -ENOMEM;
8574                 goto sw_init_done;
8575         }
8576         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
8577         pf->qp_pile->search_hint = 0;
8578
8579         pf->tx_timeout_recovery_level = 1;
8580
8581         mutex_init(&pf->switch_mutex);
8582
8583         /* If NPAR is enabled nudge the Tx scheduler */
8584         if (pf->hw.func_caps.npar_enable && (!i40e_get_npar_bw_setting(pf)))
8585                 i40e_set_npar_bw_setting(pf);
8586
8587 sw_init_done:
8588         return err;
8589 }
8590
8591 /**
8592  * i40e_set_ntuple - set the ntuple feature flag and take action
8593  * @pf: board private structure to initialize
8594  * @features: the feature set that the stack is suggesting
8595  *
8596  * returns a bool to indicate if reset needs to happen
8597  **/
8598 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
8599 {
8600         bool need_reset = false;
8601
8602         /* Check if Flow Director n-tuple support was enabled or disabled.  If
8603          * the state changed, we need to reset.
8604          */
8605         if (features & NETIF_F_NTUPLE) {
8606                 /* Enable filters and mark for reset */
8607                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
8608                         need_reset = true;
8609                 /* enable FD_SB only if there is MSI-X vector */
8610                 if (pf->num_fdsb_msix > 0)
8611                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8612         } else {
8613                 /* turn off filters, mark for reset and clear SW filter list */
8614                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8615                         need_reset = true;
8616                         i40e_fdir_filter_exit(pf);
8617                 }
8618                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8619                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
8620                 /* reset fd counters */
8621                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
8622                 pf->fdir_pf_active_filters = 0;
8623                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8624                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
8625                         dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
8626                 /* if ATR was auto disabled it can be re-enabled. */
8627                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
8628                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
8629                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
8630         }
8631         return need_reset;
8632 }
8633
8634 /**
8635  * i40e_set_features - set the netdev feature flags
8636  * @netdev: ptr to the netdev being adjusted
8637  * @features: the feature set that the stack is suggesting
8638  **/
8639 static int i40e_set_features(struct net_device *netdev,
8640                              netdev_features_t features)
8641 {
8642         struct i40e_netdev_priv *np = netdev_priv(netdev);
8643         struct i40e_vsi *vsi = np->vsi;
8644         struct i40e_pf *pf = vsi->back;
8645         bool need_reset;
8646
8647         if (features & NETIF_F_HW_VLAN_CTAG_RX)
8648                 i40e_vlan_stripping_enable(vsi);
8649         else
8650                 i40e_vlan_stripping_disable(vsi);
8651
8652         need_reset = i40e_set_ntuple(pf, features);
8653
8654         if (need_reset)
8655                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8656
8657         return 0;
8658 }
8659
8660 /**
8661  * i40e_get_udp_port_idx - Lookup a possibly offloaded for Rx UDP port
8662  * @pf: board private structure
8663  * @port: The UDP port to look up
8664  *
8665  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
8666  **/
8667 static u8 i40e_get_udp_port_idx(struct i40e_pf *pf, __be16 port)
8668 {
8669         u8 i;
8670
8671         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
8672                 if (pf->udp_ports[i].index == port)
8673                         return i;
8674         }
8675
8676         return i;
8677 }
8678
8679 /**
8680  * i40e_udp_tunnel_add - Get notifications about UDP tunnel ports that come up
8681  * @netdev: This physical port's netdev
8682  * @ti: Tunnel endpoint information
8683  **/
8684 static void i40e_udp_tunnel_add(struct net_device *netdev,
8685                                 struct udp_tunnel_info *ti)
8686 {
8687         struct i40e_netdev_priv *np = netdev_priv(netdev);
8688         struct i40e_vsi *vsi = np->vsi;
8689         struct i40e_pf *pf = vsi->back;
8690         __be16 port = ti->port;
8691         u8 next_idx;
8692         u8 idx;
8693
8694         idx = i40e_get_udp_port_idx(pf, port);
8695
8696         /* Check if port already exists */
8697         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8698                 netdev_info(netdev, "port %d already offloaded\n",
8699                             ntohs(port));
8700                 return;
8701         }
8702
8703         /* Now check if there is space to add the new port */
8704         next_idx = i40e_get_udp_port_idx(pf, 0);
8705
8706         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8707                 netdev_info(netdev, "maximum number of offloaded UDP ports reached, not adding port %d\n",
8708                             ntohs(port));
8709                 return;
8710         }
8711
8712         switch (ti->type) {
8713         case UDP_TUNNEL_TYPE_VXLAN:
8714                 pf->udp_ports[next_idx].type = I40E_AQC_TUNNEL_TYPE_VXLAN;
8715                 break;
8716         case UDP_TUNNEL_TYPE_GENEVE:
8717                 if (!(pf->flags & I40E_FLAG_GENEVE_OFFLOAD_CAPABLE))
8718                         return;
8719                 pf->udp_ports[next_idx].type = I40E_AQC_TUNNEL_TYPE_NGE;
8720                 break;
8721         default:
8722                 return;
8723         }
8724
8725         /* New port: add it and mark its index in the bitmap */
8726         pf->udp_ports[next_idx].index = port;
8727         pf->pending_udp_bitmap |= BIT_ULL(next_idx);
8728         pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
8729 }
8730
8731 /**
8732  * i40e_udp_tunnel_del - Get notifications about UDP tunnel ports that go away
8733  * @netdev: This physical port's netdev
8734  * @ti: Tunnel endpoint information
8735  **/
8736 static void i40e_udp_tunnel_del(struct net_device *netdev,
8737                                 struct udp_tunnel_info *ti)
8738 {
8739         struct i40e_netdev_priv *np = netdev_priv(netdev);
8740         struct i40e_vsi *vsi = np->vsi;
8741         struct i40e_pf *pf = vsi->back;
8742         __be16 port = ti->port;
8743         u8 idx;
8744
8745         idx = i40e_get_udp_port_idx(pf, port);
8746
8747         /* Check if port already exists */
8748         if (idx >= I40E_MAX_PF_UDP_OFFLOAD_PORTS)
8749                 goto not_found;
8750
8751         switch (ti->type) {
8752         case UDP_TUNNEL_TYPE_VXLAN:
8753                 if (pf->udp_ports[idx].type != I40E_AQC_TUNNEL_TYPE_VXLAN)
8754                         goto not_found;
8755                 break;
8756         case UDP_TUNNEL_TYPE_GENEVE:
8757                 if (pf->udp_ports[idx].type != I40E_AQC_TUNNEL_TYPE_NGE)
8758                         goto not_found;
8759                 break;
8760         default:
8761                 goto not_found;
8762         }
8763
8764         /* if port exists, set it to 0 (mark for deletion)
8765          * and make it pending
8766          */
8767         pf->udp_ports[idx].index = 0;
8768         pf->pending_udp_bitmap |= BIT_ULL(idx);
8769         pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
8770
8771         return;
8772 not_found:
8773         netdev_warn(netdev, "UDP port %d was not found, not deleting\n",
8774                     ntohs(port));
8775 }
8776
8777 static int i40e_get_phys_port_id(struct net_device *netdev,
8778                                  struct netdev_phys_item_id *ppid)
8779 {
8780         struct i40e_netdev_priv *np = netdev_priv(netdev);
8781         struct i40e_pf *pf = np->vsi->back;
8782         struct i40e_hw *hw = &pf->hw;
8783
8784         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
8785                 return -EOPNOTSUPP;
8786
8787         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
8788         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
8789
8790         return 0;
8791 }
8792
8793 /**
8794  * i40e_ndo_fdb_add - add an entry to the hardware database
8795  * @ndm: the input from the stack
8796  * @tb: pointer to array of nladdr (unused)
8797  * @dev: the net device pointer
8798  * @addr: the MAC address entry being added
8799  * @flags: instructions from stack about fdb operation
8800  */
8801 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
8802                             struct net_device *dev,
8803                             const unsigned char *addr, u16 vid,
8804                             u16 flags)
8805 {
8806         struct i40e_netdev_priv *np = netdev_priv(dev);
8807         struct i40e_pf *pf = np->vsi->back;
8808         int err = 0;
8809
8810         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
8811                 return -EOPNOTSUPP;
8812
8813         if (vid) {
8814                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
8815                 return -EINVAL;
8816         }
8817
8818         /* Hardware does not support aging addresses so if a
8819          * ndm_state is given only allow permanent addresses
8820          */
8821         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
8822                 netdev_info(dev, "FDB only supports static addresses\n");
8823                 return -EINVAL;
8824         }
8825
8826         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
8827                 err = dev_uc_add_excl(dev, addr);
8828         else if (is_multicast_ether_addr(addr))
8829                 err = dev_mc_add_excl(dev, addr);
8830         else
8831                 err = -EINVAL;
8832
8833         /* Only return duplicate errors if NLM_F_EXCL is set */
8834         if (err == -EEXIST && !(flags & NLM_F_EXCL))
8835                 err = 0;
8836
8837         return err;
8838 }
8839
8840 /**
8841  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
8842  * @dev: the netdev being configured
8843  * @nlh: RTNL message
8844  *
8845  * Inserts a new hardware bridge if not already created and
8846  * enables the bridging mode requested (VEB or VEPA). If the
8847  * hardware bridge has already been inserted and the request
8848  * is to change the mode then that requires a PF reset to
8849  * allow rebuild of the components with required hardware
8850  * bridge mode enabled.
8851  **/
8852 static int i40e_ndo_bridge_setlink(struct net_device *dev,
8853                                    struct nlmsghdr *nlh,
8854                                    u16 flags)
8855 {
8856         struct i40e_netdev_priv *np = netdev_priv(dev);
8857         struct i40e_vsi *vsi = np->vsi;
8858         struct i40e_pf *pf = vsi->back;
8859         struct i40e_veb *veb = NULL;
8860         struct nlattr *attr, *br_spec;
8861         int i, rem;
8862
8863         /* Only for PF VSI for now */
8864         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8865                 return -EOPNOTSUPP;
8866
8867         /* Find the HW bridge for PF VSI */
8868         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8869                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8870                         veb = pf->veb[i];
8871         }
8872
8873         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
8874
8875         nla_for_each_nested(attr, br_spec, rem) {
8876                 __u16 mode;
8877
8878                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
8879                         continue;
8880
8881                 mode = nla_get_u16(attr);
8882                 if ((mode != BRIDGE_MODE_VEPA) &&
8883                     (mode != BRIDGE_MODE_VEB))
8884                         return -EINVAL;
8885
8886                 /* Insert a new HW bridge */
8887                 if (!veb) {
8888                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8889                                              vsi->tc_config.enabled_tc);
8890                         if (veb) {
8891                                 veb->bridge_mode = mode;
8892                                 i40e_config_bridge_mode(veb);
8893                         } else {
8894                                 /* No Bridge HW offload available */
8895                                 return -ENOENT;
8896                         }
8897                         break;
8898                 } else if (mode != veb->bridge_mode) {
8899                         /* Existing HW bridge but different mode needs reset */
8900                         veb->bridge_mode = mode;
8901                         /* TODO: If no VFs or VMDq VSIs, disallow VEB mode */
8902                         if (mode == BRIDGE_MODE_VEB)
8903                                 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
8904                         else
8905                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
8906                         i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8907                         break;
8908                 }
8909         }
8910
8911         return 0;
8912 }
8913
8914 /**
8915  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
8916  * @skb: skb buff
8917  * @pid: process id
8918  * @seq: RTNL message seq #
8919  * @dev: the netdev being configured
8920  * @filter_mask: unused
8921  * @nlflags: netlink flags passed in
8922  *
8923  * Return the mode in which the hardware bridge is operating in
8924  * i.e VEB or VEPA.
8925  **/
8926 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
8927                                    struct net_device *dev,
8928                                    u32 __always_unused filter_mask,
8929                                    int nlflags)
8930 {
8931         struct i40e_netdev_priv *np = netdev_priv(dev);
8932         struct i40e_vsi *vsi = np->vsi;
8933         struct i40e_pf *pf = vsi->back;
8934         struct i40e_veb *veb = NULL;
8935         int i;
8936
8937         /* Only for PF VSI for now */
8938         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8939                 return -EOPNOTSUPP;
8940
8941         /* Find the HW bridge for the PF VSI */
8942         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8943                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8944                         veb = pf->veb[i];
8945         }
8946
8947         if (!veb)
8948                 return 0;
8949
8950         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
8951                                        nlflags, 0, 0, filter_mask, NULL);
8952 }
8953
8954 /* Hardware supports L4 tunnel length of 128B (=2^7) which includes
8955  * inner mac plus all inner ethertypes.
8956  */
8957 #define I40E_MAX_TUNNEL_HDR_LEN 128
8958 /**
8959  * i40e_features_check - Validate encapsulated packet conforms to limits
8960  * @skb: skb buff
8961  * @dev: This physical port's netdev
8962  * @features: Offload features that the stack believes apply
8963  **/
8964 static netdev_features_t i40e_features_check(struct sk_buff *skb,
8965                                              struct net_device *dev,
8966                                              netdev_features_t features)
8967 {
8968         if (skb->encapsulation &&
8969             ((skb_inner_network_header(skb) - skb_transport_header(skb)) >
8970              I40E_MAX_TUNNEL_HDR_LEN))
8971                 return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
8972
8973         return features;
8974 }
8975
8976 static const struct net_device_ops i40e_netdev_ops = {
8977         .ndo_open               = i40e_open,
8978         .ndo_stop               = i40e_close,
8979         .ndo_start_xmit         = i40e_lan_xmit_frame,
8980         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
8981         .ndo_set_rx_mode        = i40e_set_rx_mode,
8982         .ndo_validate_addr      = eth_validate_addr,
8983         .ndo_set_mac_address    = i40e_set_mac,
8984         .ndo_change_mtu         = i40e_change_mtu,
8985         .ndo_do_ioctl           = i40e_ioctl,
8986         .ndo_tx_timeout         = i40e_tx_timeout,
8987         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
8988         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
8989 #ifdef CONFIG_NET_POLL_CONTROLLER
8990         .ndo_poll_controller    = i40e_netpoll,
8991 #endif
8992         .ndo_setup_tc           = __i40e_setup_tc,
8993 #ifdef I40E_FCOE
8994         .ndo_fcoe_enable        = i40e_fcoe_enable,
8995         .ndo_fcoe_disable       = i40e_fcoe_disable,
8996 #endif
8997         .ndo_set_features       = i40e_set_features,
8998         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
8999         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
9000         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
9001         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
9002         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
9003         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
9004         .ndo_set_vf_trust       = i40e_ndo_set_vf_trust,
9005         .ndo_udp_tunnel_add     = i40e_udp_tunnel_add,
9006         .ndo_udp_tunnel_del     = i40e_udp_tunnel_del,
9007         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
9008         .ndo_fdb_add            = i40e_ndo_fdb_add,
9009         .ndo_features_check     = i40e_features_check,
9010         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
9011         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
9012 };
9013
9014 /**
9015  * i40e_config_netdev - Setup the netdev flags
9016  * @vsi: the VSI being configured
9017  *
9018  * Returns 0 on success, negative value on failure
9019  **/
9020 static int i40e_config_netdev(struct i40e_vsi *vsi)
9021 {
9022         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
9023         struct i40e_pf *pf = vsi->back;
9024         struct i40e_hw *hw = &pf->hw;
9025         struct i40e_netdev_priv *np;
9026         struct net_device *netdev;
9027         u8 mac_addr[ETH_ALEN];
9028         int etherdev_size;
9029
9030         etherdev_size = sizeof(struct i40e_netdev_priv);
9031         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
9032         if (!netdev)
9033                 return -ENOMEM;
9034
9035         vsi->netdev = netdev;
9036         np = netdev_priv(netdev);
9037         np->vsi = vsi;
9038
9039         netdev->hw_enc_features |= NETIF_F_SG                   |
9040                                    NETIF_F_IP_CSUM              |
9041                                    NETIF_F_IPV6_CSUM            |
9042                                    NETIF_F_HIGHDMA              |
9043                                    NETIF_F_SOFT_FEATURES        |
9044                                    NETIF_F_TSO                  |
9045                                    NETIF_F_TSO_ECN              |
9046                                    NETIF_F_TSO6                 |
9047                                    NETIF_F_GSO_GRE              |
9048                                    NETIF_F_GSO_GRE_CSUM         |
9049                                    NETIF_F_GSO_IPXIP4           |
9050                                    NETIF_F_GSO_IPXIP6           |
9051                                    NETIF_F_GSO_UDP_TUNNEL       |
9052                                    NETIF_F_GSO_UDP_TUNNEL_CSUM  |
9053                                    NETIF_F_GSO_PARTIAL          |
9054                                    NETIF_F_SCTP_CRC             |
9055                                    NETIF_F_RXHASH               |
9056                                    NETIF_F_RXCSUM               |
9057                                    0;
9058
9059         if (!(pf->flags & I40E_FLAG_OUTER_UDP_CSUM_CAPABLE))
9060                 netdev->gso_partial_features |= NETIF_F_GSO_UDP_TUNNEL_CSUM;
9061
9062         netdev->gso_partial_features |= NETIF_F_GSO_GRE_CSUM;
9063
9064         /* record features VLANs can make use of */
9065         netdev->vlan_features |= netdev->hw_enc_features |
9066                                  NETIF_F_TSO_MANGLEID;
9067
9068         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
9069                 netdev->hw_features |= NETIF_F_NTUPLE;
9070
9071         netdev->hw_features |= netdev->hw_enc_features  |
9072                                NETIF_F_HW_VLAN_CTAG_TX  |
9073                                NETIF_F_HW_VLAN_CTAG_RX;
9074
9075         netdev->features |= netdev->hw_features | NETIF_F_HW_VLAN_CTAG_FILTER;
9076         netdev->hw_enc_features |= NETIF_F_TSO_MANGLEID;
9077
9078         if (vsi->type == I40E_VSI_MAIN) {
9079                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
9080                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
9081                 /* The following steps are necessary to prevent reception
9082                  * of tagged packets - some older NVM configurations load a
9083                  * default a MAC-VLAN filter that accepts any tagged packet
9084                  * which must be replaced by a normal filter.
9085                  */
9086                 if (!i40e_rm_default_mac_filter(vsi, mac_addr)) {
9087                         spin_lock_bh(&vsi->mac_filter_list_lock);
9088                         i40e_add_filter(vsi, mac_addr,
9089                                         I40E_VLAN_ANY, false, true);
9090                         spin_unlock_bh(&vsi->mac_filter_list_lock);
9091                 }
9092         } else if ((pf->hw.aq.api_maj_ver > 1) ||
9093                    ((pf->hw.aq.api_maj_ver == 1) &&
9094                     (pf->hw.aq.api_min_ver > 4))) {
9095                 /* Supported in FW API version higher than 1.4 */
9096                 pf->flags |= I40E_FLAG_GENEVE_OFFLOAD_CAPABLE;
9097                 pf->auto_disable_flags = I40E_FLAG_HW_ATR_EVICT_CAPABLE;
9098         } else {
9099                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
9100                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
9101                          pf->vsi[pf->lan_vsi]->netdev->name);
9102                 random_ether_addr(mac_addr);
9103
9104                 spin_lock_bh(&vsi->mac_filter_list_lock);
9105                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
9106                 spin_unlock_bh(&vsi->mac_filter_list_lock);
9107         }
9108
9109         spin_lock_bh(&vsi->mac_filter_list_lock);
9110         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
9111         spin_unlock_bh(&vsi->mac_filter_list_lock);
9112
9113         ether_addr_copy(netdev->dev_addr, mac_addr);
9114         ether_addr_copy(netdev->perm_addr, mac_addr);
9115
9116         netdev->priv_flags |= IFF_UNICAST_FLT;
9117         netdev->priv_flags |= IFF_SUPP_NOFCS;
9118         /* Setup netdev TC information */
9119         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
9120
9121         netdev->netdev_ops = &i40e_netdev_ops;
9122         netdev->watchdog_timeo = 5 * HZ;
9123         i40e_set_ethtool_ops(netdev);
9124 #ifdef I40E_FCOE
9125         i40e_fcoe_config_netdev(netdev, vsi);
9126 #endif
9127
9128         return 0;
9129 }
9130
9131 /**
9132  * i40e_vsi_delete - Delete a VSI from the switch
9133  * @vsi: the VSI being removed
9134  *
9135  * Returns 0 on success, negative value on failure
9136  **/
9137 static void i40e_vsi_delete(struct i40e_vsi *vsi)
9138 {
9139         /* remove default VSI is not allowed */
9140         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
9141                 return;
9142
9143         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
9144 }
9145
9146 /**
9147  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
9148  * @vsi: the VSI being queried
9149  *
9150  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
9151  **/
9152 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
9153 {
9154         struct i40e_veb *veb;
9155         struct i40e_pf *pf = vsi->back;
9156
9157         /* Uplink is not a bridge so default to VEB */
9158         if (vsi->veb_idx == I40E_NO_VEB)
9159                 return 1;
9160
9161         veb = pf->veb[vsi->veb_idx];
9162         if (!veb) {
9163                 dev_info(&pf->pdev->dev,
9164                          "There is no veb associated with the bridge\n");
9165                 return -ENOENT;
9166         }
9167
9168         /* Uplink is a bridge in VEPA mode */
9169         if (veb->bridge_mode & BRIDGE_MODE_VEPA) {
9170                 return 0;
9171         } else {
9172                 /* Uplink is a bridge in VEB mode */
9173                 return 1;
9174         }
9175
9176         /* VEPA is now default bridge, so return 0 */
9177         return 0;
9178 }
9179
9180 /**
9181  * i40e_add_vsi - Add a VSI to the switch
9182  * @vsi: the VSI being configured
9183  *
9184  * This initializes a VSI context depending on the VSI type to be added and
9185  * passes it down to the add_vsi aq command.
9186  **/
9187 static int i40e_add_vsi(struct i40e_vsi *vsi)
9188 {
9189         int ret = -ENODEV;
9190         i40e_status aq_ret = 0;
9191         u8 laa_macaddr[ETH_ALEN];
9192         bool found_laa_mac_filter = false;
9193         struct i40e_pf *pf = vsi->back;
9194         struct i40e_hw *hw = &pf->hw;
9195         struct i40e_vsi_context ctxt;
9196         struct i40e_mac_filter *f, *ftmp;
9197
9198         u8 enabled_tc = 0x1; /* TC0 enabled */
9199         int f_count = 0;
9200
9201         memset(&ctxt, 0, sizeof(ctxt));
9202         switch (vsi->type) {
9203         case I40E_VSI_MAIN:
9204                 /* The PF's main VSI is already setup as part of the
9205                  * device initialization, so we'll not bother with
9206                  * the add_vsi call, but we will retrieve the current
9207                  * VSI context.
9208                  */
9209                 ctxt.seid = pf->main_vsi_seid;
9210                 ctxt.pf_num = pf->hw.pf_id;
9211                 ctxt.vf_num = 0;
9212                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
9213                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9214                 if (ret) {
9215                         dev_info(&pf->pdev->dev,
9216                                  "couldn't get PF vsi config, err %s aq_err %s\n",
9217                                  i40e_stat_str(&pf->hw, ret),
9218                                  i40e_aq_str(&pf->hw,
9219                                              pf->hw.aq.asq_last_status));
9220                         return -ENOENT;
9221                 }
9222                 vsi->info = ctxt.info;
9223                 vsi->info.valid_sections = 0;
9224
9225                 vsi->seid = ctxt.seid;
9226                 vsi->id = ctxt.vsi_number;
9227
9228                 enabled_tc = i40e_pf_get_tc_map(pf);
9229
9230                 /* MFP mode setup queue map and update VSI */
9231                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
9232                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
9233                         memset(&ctxt, 0, sizeof(ctxt));
9234                         ctxt.seid = pf->main_vsi_seid;
9235                         ctxt.pf_num = pf->hw.pf_id;
9236                         ctxt.vf_num = 0;
9237                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
9238                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
9239                         if (ret) {
9240                                 dev_info(&pf->pdev->dev,
9241                                          "update vsi failed, err %s aq_err %s\n",
9242                                          i40e_stat_str(&pf->hw, ret),
9243                                          i40e_aq_str(&pf->hw,
9244                                                     pf->hw.aq.asq_last_status));
9245                                 ret = -ENOENT;
9246                                 goto err;
9247                         }
9248                         /* update the local VSI info queue map */
9249                         i40e_vsi_update_queue_map(vsi, &ctxt);
9250                         vsi->info.valid_sections = 0;
9251                 } else {
9252                         /* Default/Main VSI is only enabled for TC0
9253                          * reconfigure it to enable all TCs that are
9254                          * available on the port in SFP mode.
9255                          * For MFP case the iSCSI PF would use this
9256                          * flow to enable LAN+iSCSI TC.
9257                          */
9258                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
9259                         if (ret) {
9260                                 dev_info(&pf->pdev->dev,
9261                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %s aq_err %s\n",
9262                                          enabled_tc,
9263                                          i40e_stat_str(&pf->hw, ret),
9264                                          i40e_aq_str(&pf->hw,
9265                                                     pf->hw.aq.asq_last_status));
9266                                 ret = -ENOENT;
9267                         }
9268                 }
9269                 break;
9270
9271         case I40E_VSI_FDIR:
9272                 ctxt.pf_num = hw->pf_id;
9273                 ctxt.vf_num = 0;
9274                 ctxt.uplink_seid = vsi->uplink_seid;
9275                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9276                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9277                 if ((pf->flags & I40E_FLAG_VEB_MODE_ENABLED) &&
9278                     (i40e_is_vsi_uplink_mode_veb(vsi))) {
9279                         ctxt.info.valid_sections |=
9280                              cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9281                         ctxt.info.switch_id =
9282                            cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9283                 }
9284                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9285                 break;
9286
9287         case I40E_VSI_VMDQ2:
9288                 ctxt.pf_num = hw->pf_id;
9289                 ctxt.vf_num = 0;
9290                 ctxt.uplink_seid = vsi->uplink_seid;
9291                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9292                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
9293
9294                 /* This VSI is connected to VEB so the switch_id
9295                  * should be set to zero by default.
9296                  */
9297                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
9298                         ctxt.info.valid_sections |=
9299                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9300                         ctxt.info.switch_id =
9301                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9302                 }
9303
9304                 /* Setup the VSI tx/rx queue map for TC0 only for now */
9305                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9306                 break;
9307
9308         case I40E_VSI_SRIOV:
9309                 ctxt.pf_num = hw->pf_id;
9310                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
9311                 ctxt.uplink_seid = vsi->uplink_seid;
9312                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9313                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
9314
9315                 /* This VSI is connected to VEB so the switch_id
9316                  * should be set to zero by default.
9317                  */
9318                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
9319                         ctxt.info.valid_sections |=
9320                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9321                         ctxt.info.switch_id =
9322                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9323                 }
9324
9325                 if (vsi->back->flags & I40E_FLAG_IWARP_ENABLED) {
9326                         ctxt.info.valid_sections |=
9327                                 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
9328                         ctxt.info.queueing_opt_flags |=
9329                                 (I40E_AQ_VSI_QUE_OPT_TCP_ENA |
9330                                  I40E_AQ_VSI_QUE_OPT_RSS_LUT_VSI);
9331                 }
9332
9333                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
9334                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
9335                 if (pf->vf[vsi->vf_id].spoofchk) {
9336                         ctxt.info.valid_sections |=
9337                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
9338                         ctxt.info.sec_flags |=
9339                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
9340                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
9341                 }
9342                 /* Setup the VSI tx/rx queue map for TC0 only for now */
9343                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9344                 break;
9345
9346 #ifdef I40E_FCOE
9347         case I40E_VSI_FCOE:
9348                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
9349                 if (ret) {
9350                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
9351                         return ret;
9352                 }
9353                 break;
9354
9355 #endif /* I40E_FCOE */
9356         case I40E_VSI_IWARP:
9357                 /* send down message to iWARP */
9358                 break;
9359
9360         default:
9361                 return -ENODEV;
9362         }
9363
9364         if (vsi->type != I40E_VSI_MAIN) {
9365                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
9366                 if (ret) {
9367                         dev_info(&vsi->back->pdev->dev,
9368                                  "add vsi failed, err %s aq_err %s\n",
9369                                  i40e_stat_str(&pf->hw, ret),
9370                                  i40e_aq_str(&pf->hw,
9371                                              pf->hw.aq.asq_last_status));
9372                         ret = -ENOENT;
9373                         goto err;
9374                 }
9375                 vsi->info = ctxt.info;
9376                 vsi->info.valid_sections = 0;
9377                 vsi->seid = ctxt.seid;
9378                 vsi->id = ctxt.vsi_number;
9379         }
9380         /* Except FDIR VSI, for all othet VSI set the broadcast filter */
9381         if (vsi->type != I40E_VSI_FDIR) {
9382                 aq_ret = i40e_aq_set_vsi_broadcast(hw, vsi->seid, true, NULL);
9383                 if (aq_ret) {
9384                         ret = i40e_aq_rc_to_posix(aq_ret,
9385                                                   hw->aq.asq_last_status);
9386                         dev_info(&pf->pdev->dev,
9387                                  "set brdcast promisc failed, err %s, aq_err %s\n",
9388                                  i40e_stat_str(hw, aq_ret),
9389                                  i40e_aq_str(hw, hw->aq.asq_last_status));
9390                 }
9391         }
9392
9393         spin_lock_bh(&vsi->mac_filter_list_lock);
9394         /* If macvlan filters already exist, force them to get loaded */
9395         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
9396                 f->changed = true;
9397                 f_count++;
9398
9399                 /* Expected to have only one MAC filter entry for LAA in list */
9400                 if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
9401                         ether_addr_copy(laa_macaddr, f->macaddr);
9402                         found_laa_mac_filter = true;
9403                 }
9404         }
9405         spin_unlock_bh(&vsi->mac_filter_list_lock);
9406
9407         if (found_laa_mac_filter) {
9408                 struct i40e_aqc_remove_macvlan_element_data element;
9409
9410                 memset(&element, 0, sizeof(element));
9411                 ether_addr_copy(element.mac_addr, laa_macaddr);
9412                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
9413                 ret = i40e_aq_remove_macvlan(hw, vsi->seid,
9414                                              &element, 1, NULL);
9415                 if (ret) {
9416                         /* some older FW has a different default */
9417                         element.flags |=
9418                                        I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
9419                         i40e_aq_remove_macvlan(hw, vsi->seid,
9420                                                &element, 1, NULL);
9421                 }
9422
9423                 i40e_aq_mac_address_write(hw,
9424                                           I40E_AQC_WRITE_TYPE_LAA_WOL,
9425                                           laa_macaddr, NULL);
9426         }
9427
9428         if (f_count) {
9429                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
9430                 pf->flags |= I40E_FLAG_FILTER_SYNC;
9431         }
9432
9433         /* Update VSI BW information */
9434         ret = i40e_vsi_get_bw_info(vsi);
9435         if (ret) {
9436                 dev_info(&pf->pdev->dev,
9437                          "couldn't get vsi bw info, err %s aq_err %s\n",
9438                          i40e_stat_str(&pf->hw, ret),
9439                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9440                 /* VSI is already added so not tearing that up */
9441                 ret = 0;
9442         }
9443
9444 err:
9445         return ret;
9446 }
9447
9448 /**
9449  * i40e_vsi_release - Delete a VSI and free its resources
9450  * @vsi: the VSI being removed
9451  *
9452  * Returns 0 on success or < 0 on error
9453  **/
9454 int i40e_vsi_release(struct i40e_vsi *vsi)
9455 {
9456         struct i40e_mac_filter *f, *ftmp;
9457         struct i40e_veb *veb = NULL;
9458         struct i40e_pf *pf;
9459         u16 uplink_seid;
9460         int i, n;
9461
9462         pf = vsi->back;
9463
9464         /* release of a VEB-owner or last VSI is not allowed */
9465         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
9466                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
9467                          vsi->seid, vsi->uplink_seid);
9468                 return -ENODEV;
9469         }
9470         if (vsi == pf->vsi[pf->lan_vsi] &&
9471             !test_bit(__I40E_DOWN, &pf->state)) {
9472                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
9473                 return -ENODEV;
9474         }
9475
9476         uplink_seid = vsi->uplink_seid;
9477         if (vsi->type != I40E_VSI_SRIOV) {
9478                 if (vsi->netdev_registered) {
9479                         vsi->netdev_registered = false;
9480                         if (vsi->netdev) {
9481                                 /* results in a call to i40e_close() */
9482                                 unregister_netdev(vsi->netdev);
9483                         }
9484                 } else {
9485                         i40e_vsi_close(vsi);
9486                 }
9487                 i40e_vsi_disable_irq(vsi);
9488         }
9489
9490         spin_lock_bh(&vsi->mac_filter_list_lock);
9491         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
9492                 i40e_del_filter(vsi, f->macaddr, f->vlan,
9493                                 f->is_vf, f->is_netdev);
9494         spin_unlock_bh(&vsi->mac_filter_list_lock);
9495
9496         i40e_sync_vsi_filters(vsi);
9497
9498         i40e_vsi_delete(vsi);
9499         i40e_vsi_free_q_vectors(vsi);
9500         if (vsi->netdev) {
9501                 free_netdev(vsi->netdev);
9502                 vsi->netdev = NULL;
9503         }
9504         i40e_vsi_clear_rings(vsi);
9505         i40e_vsi_clear(vsi);
9506
9507         /* If this was the last thing on the VEB, except for the
9508          * controlling VSI, remove the VEB, which puts the controlling
9509          * VSI onto the next level down in the switch.
9510          *
9511          * Well, okay, there's one more exception here: don't remove
9512          * the orphan VEBs yet.  We'll wait for an explicit remove request
9513          * from up the network stack.
9514          */
9515         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
9516                 if (pf->vsi[i] &&
9517                     pf->vsi[i]->uplink_seid == uplink_seid &&
9518                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9519                         n++;      /* count the VSIs */
9520                 }
9521         }
9522         for (i = 0; i < I40E_MAX_VEB; i++) {
9523                 if (!pf->veb[i])
9524                         continue;
9525                 if (pf->veb[i]->uplink_seid == uplink_seid)
9526                         n++;     /* count the VEBs */
9527                 if (pf->veb[i]->seid == uplink_seid)
9528                         veb = pf->veb[i];
9529         }
9530         if (n == 0 && veb && veb->uplink_seid != 0)
9531                 i40e_veb_release(veb);
9532
9533         return 0;
9534 }
9535
9536 /**
9537  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
9538  * @vsi: ptr to the VSI
9539  *
9540  * This should only be called after i40e_vsi_mem_alloc() which allocates the
9541  * corresponding SW VSI structure and initializes num_queue_pairs for the
9542  * newly allocated VSI.
9543  *
9544  * Returns 0 on success or negative on failure
9545  **/
9546 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
9547 {
9548         int ret = -ENOENT;
9549         struct i40e_pf *pf = vsi->back;
9550
9551         if (vsi->q_vectors[0]) {
9552                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
9553                          vsi->seid);
9554                 return -EEXIST;
9555         }
9556
9557         if (vsi->base_vector) {
9558                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
9559                          vsi->seid, vsi->base_vector);
9560                 return -EEXIST;
9561         }
9562
9563         ret = i40e_vsi_alloc_q_vectors(vsi);
9564         if (ret) {
9565                 dev_info(&pf->pdev->dev,
9566                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
9567                          vsi->num_q_vectors, vsi->seid, ret);
9568                 vsi->num_q_vectors = 0;
9569                 goto vector_setup_out;
9570         }
9571
9572         /* In Legacy mode, we do not have to get any other vector since we
9573          * piggyback on the misc/ICR0 for queue interrupts.
9574         */
9575         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
9576                 return ret;
9577         if (vsi->num_q_vectors)
9578                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
9579                                                  vsi->num_q_vectors, vsi->idx);
9580         if (vsi->base_vector < 0) {
9581                 dev_info(&pf->pdev->dev,
9582                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
9583                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
9584                 i40e_vsi_free_q_vectors(vsi);
9585                 ret = -ENOENT;
9586                 goto vector_setup_out;
9587         }
9588
9589 vector_setup_out:
9590         return ret;
9591 }
9592
9593 /**
9594  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
9595  * @vsi: pointer to the vsi.
9596  *
9597  * This re-allocates a vsi's queue resources.
9598  *
9599  * Returns pointer to the successfully allocated and configured VSI sw struct
9600  * on success, otherwise returns NULL on failure.
9601  **/
9602 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
9603 {
9604         struct i40e_pf *pf;
9605         u8 enabled_tc;
9606         int ret;
9607
9608         if (!vsi)
9609                 return NULL;
9610
9611         pf = vsi->back;
9612
9613         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
9614         i40e_vsi_clear_rings(vsi);
9615
9616         i40e_vsi_free_arrays(vsi, false);
9617         i40e_set_num_rings_in_vsi(vsi);
9618         ret = i40e_vsi_alloc_arrays(vsi, false);
9619         if (ret)
9620                 goto err_vsi;
9621
9622         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
9623         if (ret < 0) {
9624                 dev_info(&pf->pdev->dev,
9625                          "failed to get tracking for %d queues for VSI %d err %d\n",
9626                          vsi->alloc_queue_pairs, vsi->seid, ret);
9627                 goto err_vsi;
9628         }
9629         vsi->base_queue = ret;
9630
9631         /* Update the FW view of the VSI. Force a reset of TC and queue
9632          * layout configurations.
9633          */
9634         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
9635         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
9636         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
9637         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
9638
9639         /* assign it some queues */
9640         ret = i40e_alloc_rings(vsi);
9641         if (ret)
9642                 goto err_rings;
9643
9644         /* map all of the rings to the q_vectors */
9645         i40e_vsi_map_rings_to_vectors(vsi);
9646         return vsi;
9647
9648 err_rings:
9649         i40e_vsi_free_q_vectors(vsi);
9650         if (vsi->netdev_registered) {
9651                 vsi->netdev_registered = false;
9652                 unregister_netdev(vsi->netdev);
9653                 free_netdev(vsi->netdev);
9654                 vsi->netdev = NULL;
9655         }
9656         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9657 err_vsi:
9658         i40e_vsi_clear(vsi);
9659         return NULL;
9660 }
9661
9662 /**
9663  * i40e_macaddr_init - explicitly write the mac address filters.
9664  *
9665  * @vsi: pointer to the vsi.
9666  * @macaddr: the MAC address
9667  *
9668  * This is needed when the macaddr has been obtained by other
9669  * means than the default, e.g., from Open Firmware or IDPROM.
9670  * Returns 0 on success, negative on failure
9671  **/
9672 static int i40e_macaddr_init(struct i40e_vsi *vsi, u8 *macaddr)
9673 {
9674         int ret;
9675         struct i40e_aqc_add_macvlan_element_data element;
9676
9677         ret = i40e_aq_mac_address_write(&vsi->back->hw,
9678                                         I40E_AQC_WRITE_TYPE_LAA_WOL,
9679                                         macaddr, NULL);
9680         if (ret) {
9681                 dev_info(&vsi->back->pdev->dev,
9682                          "Addr change for VSI failed: %d\n", ret);
9683                 return -EADDRNOTAVAIL;
9684         }
9685
9686         memset(&element, 0, sizeof(element));
9687         ether_addr_copy(element.mac_addr, macaddr);
9688         element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
9689         ret = i40e_aq_add_macvlan(&vsi->back->hw, vsi->seid, &element, 1, NULL);
9690         if (ret) {
9691                 dev_info(&vsi->back->pdev->dev,
9692                          "add filter failed err %s aq_err %s\n",
9693                          i40e_stat_str(&vsi->back->hw, ret),
9694                          i40e_aq_str(&vsi->back->hw,
9695                                      vsi->back->hw.aq.asq_last_status));
9696         }
9697         return ret;
9698 }
9699
9700 /**
9701  * i40e_vsi_setup - Set up a VSI by a given type
9702  * @pf: board private structure
9703  * @type: VSI type
9704  * @uplink_seid: the switch element to link to
9705  * @param1: usage depends upon VSI type. For VF types, indicates VF id
9706  *
9707  * This allocates the sw VSI structure and its queue resources, then add a VSI
9708  * to the identified VEB.
9709  *
9710  * Returns pointer to the successfully allocated and configure VSI sw struct on
9711  * success, otherwise returns NULL on failure.
9712  **/
9713 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
9714                                 u16 uplink_seid, u32 param1)
9715 {
9716         struct i40e_vsi *vsi = NULL;
9717         struct i40e_veb *veb = NULL;
9718         int ret, i;
9719         int v_idx;
9720
9721         /* The requested uplink_seid must be either
9722          *     - the PF's port seid
9723          *              no VEB is needed because this is the PF
9724          *              or this is a Flow Director special case VSI
9725          *     - seid of an existing VEB
9726          *     - seid of a VSI that owns an existing VEB
9727          *     - seid of a VSI that doesn't own a VEB
9728          *              a new VEB is created and the VSI becomes the owner
9729          *     - seid of the PF VSI, which is what creates the first VEB
9730          *              this is a special case of the previous
9731          *
9732          * Find which uplink_seid we were given and create a new VEB if needed
9733          */
9734         for (i = 0; i < I40E_MAX_VEB; i++) {
9735                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
9736                         veb = pf->veb[i];
9737                         break;
9738                 }
9739         }
9740
9741         if (!veb && uplink_seid != pf->mac_seid) {
9742
9743                 for (i = 0; i < pf->num_alloc_vsi; i++) {
9744                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
9745                                 vsi = pf->vsi[i];
9746                                 break;
9747                         }
9748                 }
9749                 if (!vsi) {
9750                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
9751                                  uplink_seid);
9752                         return NULL;
9753                 }
9754
9755                 if (vsi->uplink_seid == pf->mac_seid)
9756                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
9757                                              vsi->tc_config.enabled_tc);
9758                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
9759                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
9760                                              vsi->tc_config.enabled_tc);
9761                 if (veb) {
9762                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
9763                                 dev_info(&vsi->back->pdev->dev,
9764                                          "New VSI creation error, uplink seid of LAN VSI expected.\n");
9765                                 return NULL;
9766                         }
9767                         /* We come up by default in VEPA mode if SRIOV is not
9768                          * already enabled, in which case we can't force VEPA
9769                          * mode.
9770                          */
9771                         if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
9772                                 veb->bridge_mode = BRIDGE_MODE_VEPA;
9773                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
9774                         }
9775                         i40e_config_bridge_mode(veb);
9776                 }
9777                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9778                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9779                                 veb = pf->veb[i];
9780                 }
9781                 if (!veb) {
9782                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
9783                         return NULL;
9784                 }
9785
9786                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9787                 uplink_seid = veb->seid;
9788         }
9789
9790         /* get vsi sw struct */
9791         v_idx = i40e_vsi_mem_alloc(pf, type);
9792         if (v_idx < 0)
9793                 goto err_alloc;
9794         vsi = pf->vsi[v_idx];
9795         if (!vsi)
9796                 goto err_alloc;
9797         vsi->type = type;
9798         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
9799
9800         if (type == I40E_VSI_MAIN)
9801                 pf->lan_vsi = v_idx;
9802         else if (type == I40E_VSI_SRIOV)
9803                 vsi->vf_id = param1;
9804         /* assign it some queues */
9805         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
9806                                 vsi->idx);
9807         if (ret < 0) {
9808                 dev_info(&pf->pdev->dev,
9809                          "failed to get tracking for %d queues for VSI %d err=%d\n",
9810                          vsi->alloc_queue_pairs, vsi->seid, ret);
9811                 goto err_vsi;
9812         }
9813         vsi->base_queue = ret;
9814
9815         /* get a VSI from the hardware */
9816         vsi->uplink_seid = uplink_seid;
9817         ret = i40e_add_vsi(vsi);
9818         if (ret)
9819                 goto err_vsi;
9820
9821         switch (vsi->type) {
9822         /* setup the netdev if needed */
9823         case I40E_VSI_MAIN:
9824                 /* Apply relevant filters if a platform-specific mac
9825                  * address was selected.
9826                  */
9827                 if (!!(pf->flags & I40E_FLAG_PF_MAC)) {
9828                         ret = i40e_macaddr_init(vsi, pf->hw.mac.addr);
9829                         if (ret) {
9830                                 dev_warn(&pf->pdev->dev,
9831                                          "could not set up macaddr; err %d\n",
9832                                          ret);
9833                         }
9834                 }
9835         case I40E_VSI_VMDQ2:
9836         case I40E_VSI_FCOE:
9837                 ret = i40e_config_netdev(vsi);
9838                 if (ret)
9839                         goto err_netdev;
9840                 ret = register_netdev(vsi->netdev);
9841                 if (ret)
9842                         goto err_netdev;
9843                 vsi->netdev_registered = true;
9844                 netif_carrier_off(vsi->netdev);
9845 #ifdef CONFIG_I40E_DCB
9846                 /* Setup DCB netlink interface */
9847                 i40e_dcbnl_setup(vsi);
9848 #endif /* CONFIG_I40E_DCB */
9849                 /* fall through */
9850
9851         case I40E_VSI_FDIR:
9852                 /* set up vectors and rings if needed */
9853                 ret = i40e_vsi_setup_vectors(vsi);
9854                 if (ret)
9855                         goto err_msix;
9856
9857                 ret = i40e_alloc_rings(vsi);
9858                 if (ret)
9859                         goto err_rings;
9860
9861                 /* map all of the rings to the q_vectors */
9862                 i40e_vsi_map_rings_to_vectors(vsi);
9863
9864                 i40e_vsi_reset_stats(vsi);
9865                 break;
9866
9867         default:
9868                 /* no netdev or rings for the other VSI types */
9869                 break;
9870         }
9871
9872         if ((pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) &&
9873             (vsi->type == I40E_VSI_VMDQ2)) {
9874                 ret = i40e_vsi_config_rss(vsi);
9875         }
9876         return vsi;
9877
9878 err_rings:
9879         i40e_vsi_free_q_vectors(vsi);
9880 err_msix:
9881         if (vsi->netdev_registered) {
9882                 vsi->netdev_registered = false;
9883                 unregister_netdev(vsi->netdev);
9884                 free_netdev(vsi->netdev);
9885                 vsi->netdev = NULL;
9886         }
9887 err_netdev:
9888         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9889 err_vsi:
9890         i40e_vsi_clear(vsi);
9891 err_alloc:
9892         return NULL;
9893 }
9894
9895 /**
9896  * i40e_veb_get_bw_info - Query VEB BW information
9897  * @veb: the veb to query
9898  *
9899  * Query the Tx scheduler BW configuration data for given VEB
9900  **/
9901 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
9902 {
9903         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
9904         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
9905         struct i40e_pf *pf = veb->pf;
9906         struct i40e_hw *hw = &pf->hw;
9907         u32 tc_bw_max;
9908         int ret = 0;
9909         int i;
9910
9911         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
9912                                                   &bw_data, NULL);
9913         if (ret) {
9914                 dev_info(&pf->pdev->dev,
9915                          "query veb bw config failed, err %s aq_err %s\n",
9916                          i40e_stat_str(&pf->hw, ret),
9917                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9918                 goto out;
9919         }
9920
9921         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
9922                                                    &ets_data, NULL);
9923         if (ret) {
9924                 dev_info(&pf->pdev->dev,
9925                          "query veb bw ets config failed, err %s aq_err %s\n",
9926                          i40e_stat_str(&pf->hw, ret),
9927                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9928                 goto out;
9929         }
9930
9931         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
9932         veb->bw_max_quanta = ets_data.tc_bw_max;
9933         veb->is_abs_credits = bw_data.absolute_credits_enable;
9934         veb->enabled_tc = ets_data.tc_valid_bits;
9935         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
9936                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
9937         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
9938                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
9939                 veb->bw_tc_limit_credits[i] =
9940                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
9941                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
9942         }
9943
9944 out:
9945         return ret;
9946 }
9947
9948 /**
9949  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
9950  * @pf: board private structure
9951  *
9952  * On error: returns error code (negative)
9953  * On success: returns vsi index in PF (positive)
9954  **/
9955 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
9956 {
9957         int ret = -ENOENT;
9958         struct i40e_veb *veb;
9959         int i;
9960
9961         /* Need to protect the allocation of switch elements at the PF level */
9962         mutex_lock(&pf->switch_mutex);
9963
9964         /* VEB list may be fragmented if VEB creation/destruction has
9965          * been happening.  We can afford to do a quick scan to look
9966          * for any free slots in the list.
9967          *
9968          * find next empty veb slot, looping back around if necessary
9969          */
9970         i = 0;
9971         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
9972                 i++;
9973         if (i >= I40E_MAX_VEB) {
9974                 ret = -ENOMEM;
9975                 goto err_alloc_veb;  /* out of VEB slots! */
9976         }
9977
9978         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
9979         if (!veb) {
9980                 ret = -ENOMEM;
9981                 goto err_alloc_veb;
9982         }
9983         veb->pf = pf;
9984         veb->idx = i;
9985         veb->enabled_tc = 1;
9986
9987         pf->veb[i] = veb;
9988         ret = i;
9989 err_alloc_veb:
9990         mutex_unlock(&pf->switch_mutex);
9991         return ret;
9992 }
9993
9994 /**
9995  * i40e_switch_branch_release - Delete a branch of the switch tree
9996  * @branch: where to start deleting
9997  *
9998  * This uses recursion to find the tips of the branch to be
9999  * removed, deleting until we get back to and can delete this VEB.
10000  **/
10001 static void i40e_switch_branch_release(struct i40e_veb *branch)
10002 {
10003         struct i40e_pf *pf = branch->pf;
10004         u16 branch_seid = branch->seid;
10005         u16 veb_idx = branch->idx;
10006         int i;
10007
10008         /* release any VEBs on this VEB - RECURSION */
10009         for (i = 0; i < I40E_MAX_VEB; i++) {
10010                 if (!pf->veb[i])
10011                         continue;
10012                 if (pf->veb[i]->uplink_seid == branch->seid)
10013                         i40e_switch_branch_release(pf->veb[i]);
10014         }
10015
10016         /* Release the VSIs on this VEB, but not the owner VSI.
10017          *
10018          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
10019          *       the VEB itself, so don't use (*branch) after this loop.
10020          */
10021         for (i = 0; i < pf->num_alloc_vsi; i++) {
10022                 if (!pf->vsi[i])
10023                         continue;
10024                 if (pf->vsi[i]->uplink_seid == branch_seid &&
10025                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
10026                         i40e_vsi_release(pf->vsi[i]);
10027                 }
10028         }
10029
10030         /* There's one corner case where the VEB might not have been
10031          * removed, so double check it here and remove it if needed.
10032          * This case happens if the veb was created from the debugfs
10033          * commands and no VSIs were added to it.
10034          */
10035         if (pf->veb[veb_idx])
10036                 i40e_veb_release(pf->veb[veb_idx]);
10037 }
10038
10039 /**
10040  * i40e_veb_clear - remove veb struct
10041  * @veb: the veb to remove
10042  **/
10043 static void i40e_veb_clear(struct i40e_veb *veb)
10044 {
10045         if (!veb)
10046                 return;
10047
10048         if (veb->pf) {
10049                 struct i40e_pf *pf = veb->pf;
10050
10051                 mutex_lock(&pf->switch_mutex);
10052                 if (pf->veb[veb->idx] == veb)
10053                         pf->veb[veb->idx] = NULL;
10054                 mutex_unlock(&pf->switch_mutex);
10055         }
10056
10057         kfree(veb);
10058 }
10059
10060 /**
10061  * i40e_veb_release - Delete a VEB and free its resources
10062  * @veb: the VEB being removed
10063  **/
10064 void i40e_veb_release(struct i40e_veb *veb)
10065 {
10066         struct i40e_vsi *vsi = NULL;
10067         struct i40e_pf *pf;
10068         int i, n = 0;
10069
10070         pf = veb->pf;
10071
10072         /* find the remaining VSI and check for extras */
10073         for (i = 0; i < pf->num_alloc_vsi; i++) {
10074                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
10075                         n++;
10076                         vsi = pf->vsi[i];
10077                 }
10078         }
10079         if (n != 1) {
10080                 dev_info(&pf->pdev->dev,
10081                          "can't remove VEB %d with %d VSIs left\n",
10082                          veb->seid, n);
10083                 return;
10084         }
10085
10086         /* move the remaining VSI to uplink veb */
10087         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
10088         if (veb->uplink_seid) {
10089                 vsi->uplink_seid = veb->uplink_seid;
10090                 if (veb->uplink_seid == pf->mac_seid)
10091                         vsi->veb_idx = I40E_NO_VEB;
10092                 else
10093                         vsi->veb_idx = veb->veb_idx;
10094         } else {
10095                 /* floating VEB */
10096                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
10097                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
10098         }
10099
10100         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
10101         i40e_veb_clear(veb);
10102 }
10103
10104 /**
10105  * i40e_add_veb - create the VEB in the switch
10106  * @veb: the VEB to be instantiated
10107  * @vsi: the controlling VSI
10108  **/
10109 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
10110 {
10111         struct i40e_pf *pf = veb->pf;
10112         bool enable_stats = !!(pf->flags & I40E_FLAG_VEB_STATS_ENABLED);
10113         int ret;
10114
10115         ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid,
10116                               veb->enabled_tc, false,
10117                               &veb->seid, enable_stats, NULL);
10118
10119         /* get a VEB from the hardware */
10120         if (ret) {
10121                 dev_info(&pf->pdev->dev,
10122                          "couldn't add VEB, err %s aq_err %s\n",
10123                          i40e_stat_str(&pf->hw, ret),
10124                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10125                 return -EPERM;
10126         }
10127
10128         /* get statistics counter */
10129         ret = i40e_aq_get_veb_parameters(&pf->hw, veb->seid, NULL, NULL,
10130                                          &veb->stats_idx, NULL, NULL, NULL);
10131         if (ret) {
10132                 dev_info(&pf->pdev->dev,
10133                          "couldn't get VEB statistics idx, err %s aq_err %s\n",
10134                          i40e_stat_str(&pf->hw, ret),
10135                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10136                 return -EPERM;
10137         }
10138         ret = i40e_veb_get_bw_info(veb);
10139         if (ret) {
10140                 dev_info(&pf->pdev->dev,
10141                          "couldn't get VEB bw info, err %s aq_err %s\n",
10142                          i40e_stat_str(&pf->hw, ret),
10143                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10144                 i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
10145                 return -ENOENT;
10146         }
10147
10148         vsi->uplink_seid = veb->seid;
10149         vsi->veb_idx = veb->idx;
10150         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
10151
10152         return 0;
10153 }
10154
10155 /**
10156  * i40e_veb_setup - Set up a VEB
10157  * @pf: board private structure
10158  * @flags: VEB setup flags
10159  * @uplink_seid: the switch element to link to
10160  * @vsi_seid: the initial VSI seid
10161  * @enabled_tc: Enabled TC bit-map
10162  *
10163  * This allocates the sw VEB structure and links it into the switch
10164  * It is possible and legal for this to be a duplicate of an already
10165  * existing VEB.  It is also possible for both uplink and vsi seids
10166  * to be zero, in order to create a floating VEB.
10167  *
10168  * Returns pointer to the successfully allocated VEB sw struct on
10169  * success, otherwise returns NULL on failure.
10170  **/
10171 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
10172                                 u16 uplink_seid, u16 vsi_seid,
10173                                 u8 enabled_tc)
10174 {
10175         struct i40e_veb *veb, *uplink_veb = NULL;
10176         int vsi_idx, veb_idx;
10177         int ret;
10178
10179         /* if one seid is 0, the other must be 0 to create a floating relay */
10180         if ((uplink_seid == 0 || vsi_seid == 0) &&
10181             (uplink_seid + vsi_seid != 0)) {
10182                 dev_info(&pf->pdev->dev,
10183                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
10184                          uplink_seid, vsi_seid);
10185                 return NULL;
10186         }
10187
10188         /* make sure there is such a vsi and uplink */
10189         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
10190                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
10191                         break;
10192         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
10193                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
10194                          vsi_seid);
10195                 return NULL;
10196         }
10197
10198         if (uplink_seid && uplink_seid != pf->mac_seid) {
10199                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
10200                         if (pf->veb[veb_idx] &&
10201                             pf->veb[veb_idx]->seid == uplink_seid) {
10202                                 uplink_veb = pf->veb[veb_idx];
10203                                 break;
10204                         }
10205                 }
10206                 if (!uplink_veb) {
10207                         dev_info(&pf->pdev->dev,
10208                                  "uplink seid %d not found\n", uplink_seid);
10209                         return NULL;
10210                 }
10211         }
10212
10213         /* get veb sw struct */
10214         veb_idx = i40e_veb_mem_alloc(pf);
10215         if (veb_idx < 0)
10216                 goto err_alloc;
10217         veb = pf->veb[veb_idx];
10218         veb->flags = flags;
10219         veb->uplink_seid = uplink_seid;
10220         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
10221         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
10222
10223         /* create the VEB in the switch */
10224         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
10225         if (ret)
10226                 goto err_veb;
10227         if (vsi_idx == pf->lan_vsi)
10228                 pf->lan_veb = veb->idx;
10229
10230         return veb;
10231
10232 err_veb:
10233         i40e_veb_clear(veb);
10234 err_alloc:
10235         return NULL;
10236 }
10237
10238 /**
10239  * i40e_setup_pf_switch_element - set PF vars based on switch type
10240  * @pf: board private structure
10241  * @ele: element we are building info from
10242  * @num_reported: total number of elements
10243  * @printconfig: should we print the contents
10244  *
10245  * helper function to assist in extracting a few useful SEID values.
10246  **/
10247 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
10248                                 struct i40e_aqc_switch_config_element_resp *ele,
10249                                 u16 num_reported, bool printconfig)
10250 {
10251         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
10252         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
10253         u8 element_type = ele->element_type;
10254         u16 seid = le16_to_cpu(ele->seid);
10255
10256         if (printconfig)
10257                 dev_info(&pf->pdev->dev,
10258                          "type=%d seid=%d uplink=%d downlink=%d\n",
10259                          element_type, seid, uplink_seid, downlink_seid);
10260
10261         switch (element_type) {
10262         case I40E_SWITCH_ELEMENT_TYPE_MAC:
10263                 pf->mac_seid = seid;
10264                 break;
10265         case I40E_SWITCH_ELEMENT_TYPE_VEB:
10266                 /* Main VEB? */
10267                 if (uplink_seid != pf->mac_seid)
10268                         break;
10269                 if (pf->lan_veb == I40E_NO_VEB) {
10270                         int v;
10271
10272                         /* find existing or else empty VEB */
10273                         for (v = 0; v < I40E_MAX_VEB; v++) {
10274                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
10275                                         pf->lan_veb = v;
10276                                         break;
10277                                 }
10278                         }
10279                         if (pf->lan_veb == I40E_NO_VEB) {
10280                                 v = i40e_veb_mem_alloc(pf);
10281                                 if (v < 0)
10282                                         break;
10283                                 pf->lan_veb = v;
10284                         }
10285                 }
10286
10287                 pf->veb[pf->lan_veb]->seid = seid;
10288                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
10289                 pf->veb[pf->lan_veb]->pf = pf;
10290                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
10291                 break;
10292         case I40E_SWITCH_ELEMENT_TYPE_VSI:
10293                 if (num_reported != 1)
10294                         break;
10295                 /* This is immediately after a reset so we can assume this is
10296                  * the PF's VSI
10297                  */
10298                 pf->mac_seid = uplink_seid;
10299                 pf->pf_seid = downlink_seid;
10300                 pf->main_vsi_seid = seid;
10301                 if (printconfig)
10302                         dev_info(&pf->pdev->dev,
10303                                  "pf_seid=%d main_vsi_seid=%d\n",
10304                                  pf->pf_seid, pf->main_vsi_seid);
10305                 break;
10306         case I40E_SWITCH_ELEMENT_TYPE_PF:
10307         case I40E_SWITCH_ELEMENT_TYPE_VF:
10308         case I40E_SWITCH_ELEMENT_TYPE_EMP:
10309         case I40E_SWITCH_ELEMENT_TYPE_BMC:
10310         case I40E_SWITCH_ELEMENT_TYPE_PE:
10311         case I40E_SWITCH_ELEMENT_TYPE_PA:
10312                 /* ignore these for now */
10313                 break;
10314         default:
10315                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
10316                          element_type, seid);
10317                 break;
10318         }
10319 }
10320
10321 /**
10322  * i40e_fetch_switch_configuration - Get switch config from firmware
10323  * @pf: board private structure
10324  * @printconfig: should we print the contents
10325  *
10326  * Get the current switch configuration from the device and
10327  * extract a few useful SEID values.
10328  **/
10329 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
10330 {
10331         struct i40e_aqc_get_switch_config_resp *sw_config;
10332         u16 next_seid = 0;
10333         int ret = 0;
10334         u8 *aq_buf;
10335         int i;
10336
10337         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
10338         if (!aq_buf)
10339                 return -ENOMEM;
10340
10341         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
10342         do {
10343                 u16 num_reported, num_total;
10344
10345                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
10346                                                 I40E_AQ_LARGE_BUF,
10347                                                 &next_seid, NULL);
10348                 if (ret) {
10349                         dev_info(&pf->pdev->dev,
10350                                  "get switch config failed err %s aq_err %s\n",
10351                                  i40e_stat_str(&pf->hw, ret),
10352                                  i40e_aq_str(&pf->hw,
10353                                              pf->hw.aq.asq_last_status));
10354                         kfree(aq_buf);
10355                         return -ENOENT;
10356                 }
10357
10358                 num_reported = le16_to_cpu(sw_config->header.num_reported);
10359                 num_total = le16_to_cpu(sw_config->header.num_total);
10360
10361                 if (printconfig)
10362                         dev_info(&pf->pdev->dev,
10363                                  "header: %d reported %d total\n",
10364                                  num_reported, num_total);
10365
10366                 for (i = 0; i < num_reported; i++) {
10367                         struct i40e_aqc_switch_config_element_resp *ele =
10368                                 &sw_config->element[i];
10369
10370                         i40e_setup_pf_switch_element(pf, ele, num_reported,
10371                                                      printconfig);
10372                 }
10373         } while (next_seid != 0);
10374
10375         kfree(aq_buf);
10376         return ret;
10377 }
10378
10379 /**
10380  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
10381  * @pf: board private structure
10382  * @reinit: if the Main VSI needs to re-initialized.
10383  *
10384  * Returns 0 on success, negative value on failure
10385  **/
10386 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
10387 {
10388         u16 flags = 0;
10389         int ret;
10390
10391         /* find out what's out there already */
10392         ret = i40e_fetch_switch_configuration(pf, false);
10393         if (ret) {
10394                 dev_info(&pf->pdev->dev,
10395                          "couldn't fetch switch config, err %s aq_err %s\n",
10396                          i40e_stat_str(&pf->hw, ret),
10397                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10398                 return ret;
10399         }
10400         i40e_pf_reset_stats(pf);
10401
10402         /* set the switch config bit for the whole device to
10403          * support limited promisc or true promisc
10404          * when user requests promisc. The default is limited
10405          * promisc.
10406         */
10407
10408         if ((pf->hw.pf_id == 0) &&
10409             !(pf->flags & I40E_FLAG_TRUE_PROMISC_SUPPORT))
10410                 flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
10411
10412         if (pf->hw.pf_id == 0) {
10413                 u16 valid_flags;
10414
10415                 valid_flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
10416                 ret = i40e_aq_set_switch_config(&pf->hw, flags, valid_flags,
10417                                                 NULL);
10418                 if (ret && pf->hw.aq.asq_last_status != I40E_AQ_RC_ESRCH) {
10419                         dev_info(&pf->pdev->dev,
10420                                  "couldn't set switch config bits, err %s aq_err %s\n",
10421                                  i40e_stat_str(&pf->hw, ret),
10422                                  i40e_aq_str(&pf->hw,
10423                                              pf->hw.aq.asq_last_status));
10424                         /* not a fatal problem, just keep going */
10425                 }
10426         }
10427
10428         /* first time setup */
10429         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
10430                 struct i40e_vsi *vsi = NULL;
10431                 u16 uplink_seid;
10432
10433                 /* Set up the PF VSI associated with the PF's main VSI
10434                  * that is already in the HW switch
10435                  */
10436                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
10437                         uplink_seid = pf->veb[pf->lan_veb]->seid;
10438                 else
10439                         uplink_seid = pf->mac_seid;
10440                 if (pf->lan_vsi == I40E_NO_VSI)
10441                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
10442                 else if (reinit)
10443                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
10444                 if (!vsi) {
10445                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
10446                         i40e_fdir_teardown(pf);
10447                         return -EAGAIN;
10448                 }
10449         } else {
10450                 /* force a reset of TC and queue layout configurations */
10451                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
10452
10453                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
10454                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
10455                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
10456         }
10457         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
10458
10459         i40e_fdir_sb_setup(pf);
10460
10461         /* Setup static PF queue filter control settings */
10462         ret = i40e_setup_pf_filter_control(pf);
10463         if (ret) {
10464                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
10465                          ret);
10466                 /* Failure here should not stop continuing other steps */
10467         }
10468
10469         /* enable RSS in the HW, even for only one queue, as the stack can use
10470          * the hash
10471          */
10472         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
10473                 i40e_pf_config_rss(pf);
10474
10475         /* fill in link information and enable LSE reporting */
10476         i40e_update_link_info(&pf->hw);
10477         i40e_link_event(pf);
10478
10479         /* Initialize user-specific link properties */
10480         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
10481                                   I40E_AQ_AN_COMPLETED) ? true : false);
10482
10483         i40e_ptp_init(pf);
10484
10485         return ret;
10486 }
10487
10488 /**
10489  * i40e_determine_queue_usage - Work out queue distribution
10490  * @pf: board private structure
10491  **/
10492 static void i40e_determine_queue_usage(struct i40e_pf *pf)
10493 {
10494         int queues_left;
10495
10496         pf->num_lan_qps = 0;
10497 #ifdef I40E_FCOE
10498         pf->num_fcoe_qps = 0;
10499 #endif
10500
10501         /* Find the max queues to be put into basic use.  We'll always be
10502          * using TC0, whether or not DCB is running, and TC0 will get the
10503          * big RSS set.
10504          */
10505         queues_left = pf->hw.func_caps.num_tx_qp;
10506
10507         if ((queues_left == 1) ||
10508             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
10509                 /* one qp for PF, no queues for anything else */
10510                 queues_left = 0;
10511                 pf->alloc_rss_size = pf->num_lan_qps = 1;
10512
10513                 /* make sure all the fancies are disabled */
10514                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10515                                I40E_FLAG_IWARP_ENABLED  |
10516 #ifdef I40E_FCOE
10517                                I40E_FLAG_FCOE_ENABLED   |
10518 #endif
10519                                I40E_FLAG_FD_SB_ENABLED  |
10520                                I40E_FLAG_FD_ATR_ENABLED |
10521                                I40E_FLAG_DCB_CAPABLE    |
10522                                I40E_FLAG_SRIOV_ENABLED  |
10523                                I40E_FLAG_VMDQ_ENABLED);
10524         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
10525                                   I40E_FLAG_FD_SB_ENABLED |
10526                                   I40E_FLAG_FD_ATR_ENABLED |
10527                                   I40E_FLAG_DCB_CAPABLE))) {
10528                 /* one qp for PF */
10529                 pf->alloc_rss_size = pf->num_lan_qps = 1;
10530                 queues_left -= pf->num_lan_qps;
10531
10532                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10533                                I40E_FLAG_IWARP_ENABLED  |
10534 #ifdef I40E_FCOE
10535                                I40E_FLAG_FCOE_ENABLED   |
10536 #endif
10537                                I40E_FLAG_FD_SB_ENABLED  |
10538                                I40E_FLAG_FD_ATR_ENABLED |
10539                                I40E_FLAG_DCB_ENABLED    |
10540                                I40E_FLAG_VMDQ_ENABLED);
10541         } else {
10542                 /* Not enough queues for all TCs */
10543                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
10544                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
10545                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10546                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
10547                 }
10548                 pf->num_lan_qps = max_t(int, pf->rss_size_max,
10549                                         num_online_cpus());
10550                 pf->num_lan_qps = min_t(int, pf->num_lan_qps,
10551                                         pf->hw.func_caps.num_tx_qp);
10552
10553                 queues_left -= pf->num_lan_qps;
10554         }
10555
10556 #ifdef I40E_FCOE
10557         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
10558                 if (I40E_DEFAULT_FCOE <= queues_left) {
10559                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
10560                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
10561                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
10562                 } else {
10563                         pf->num_fcoe_qps = 0;
10564                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
10565                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
10566                 }
10567
10568                 queues_left -= pf->num_fcoe_qps;
10569         }
10570
10571 #endif
10572         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10573                 if (queues_left > 1) {
10574                         queues_left -= 1; /* save 1 queue for FD */
10575                 } else {
10576                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
10577                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
10578                 }
10579         }
10580
10581         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10582             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
10583                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
10584                                         (queues_left / pf->num_vf_qps));
10585                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
10586         }
10587
10588         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
10589             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
10590                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
10591                                           (queues_left / pf->num_vmdq_qps));
10592                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
10593         }
10594
10595         pf->queues_left = queues_left;
10596         dev_dbg(&pf->pdev->dev,
10597                 "qs_avail=%d FD SB=%d lan_qs=%d lan_tc0=%d vf=%d*%d vmdq=%d*%d, remaining=%d\n",
10598                 pf->hw.func_caps.num_tx_qp,
10599                 !!(pf->flags & I40E_FLAG_FD_SB_ENABLED),
10600                 pf->num_lan_qps, pf->alloc_rss_size, pf->num_req_vfs,
10601                 pf->num_vf_qps, pf->num_vmdq_vsis, pf->num_vmdq_qps,
10602                 queues_left);
10603 #ifdef I40E_FCOE
10604         dev_dbg(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
10605 #endif
10606 }
10607
10608 /**
10609  * i40e_setup_pf_filter_control - Setup PF static filter control
10610  * @pf: PF to be setup
10611  *
10612  * i40e_setup_pf_filter_control sets up a PF's initial filter control
10613  * settings. If PE/FCoE are enabled then it will also set the per PF
10614  * based filter sizes required for them. It also enables Flow director,
10615  * ethertype and macvlan type filter settings for the pf.
10616  *
10617  * Returns 0 on success, negative on failure
10618  **/
10619 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
10620 {
10621         struct i40e_filter_control_settings *settings = &pf->filter_settings;
10622
10623         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
10624
10625         /* Flow Director is enabled */
10626         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
10627                 settings->enable_fdir = true;
10628
10629         /* Ethtype and MACVLAN filters enabled for PF */
10630         settings->enable_ethtype = true;
10631         settings->enable_macvlan = true;
10632
10633         if (i40e_set_filter_control(&pf->hw, settings))
10634                 return -ENOENT;
10635
10636         return 0;
10637 }
10638
10639 #define INFO_STRING_LEN 255
10640 #define REMAIN(__x) (INFO_STRING_LEN - (__x))
10641 static void i40e_print_features(struct i40e_pf *pf)
10642 {
10643         struct i40e_hw *hw = &pf->hw;
10644         char *buf;
10645         int i;
10646
10647         buf = kmalloc(INFO_STRING_LEN, GFP_KERNEL);
10648         if (!buf)
10649                 return;
10650
10651         i = snprintf(buf, INFO_STRING_LEN, "Features: PF-id[%d]", hw->pf_id);
10652 #ifdef CONFIG_PCI_IOV
10653         i += snprintf(&buf[i], REMAIN(i), " VFs: %d", pf->num_req_vfs);
10654 #endif
10655         i += snprintf(&buf[i], REMAIN(i), " VSIs: %d QP: %d",
10656                       pf->hw.func_caps.num_vsis,
10657                       pf->vsi[pf->lan_vsi]->num_queue_pairs);
10658         if (pf->flags & I40E_FLAG_RSS_ENABLED)
10659                 i += snprintf(&buf[i], REMAIN(i), " RSS");
10660         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
10661                 i += snprintf(&buf[i], REMAIN(i), " FD_ATR");
10662         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10663                 i += snprintf(&buf[i], REMAIN(i), " FD_SB");
10664                 i += snprintf(&buf[i], REMAIN(i), " NTUPLE");
10665         }
10666         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
10667                 i += snprintf(&buf[i], REMAIN(i), " DCB");
10668         i += snprintf(&buf[i], REMAIN(i), " VxLAN");
10669         i += snprintf(&buf[i], REMAIN(i), " Geneve");
10670         if (pf->flags & I40E_FLAG_PTP)
10671                 i += snprintf(&buf[i], REMAIN(i), " PTP");
10672 #ifdef I40E_FCOE
10673         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
10674                 i += snprintf(&buf[i], REMAIN(i), " FCOE");
10675 #endif
10676         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
10677                 i += snprintf(&buf[i], REMAIN(i), " VEB");
10678         else
10679                 i += snprintf(&buf[i], REMAIN(i), " VEPA");
10680
10681         dev_info(&pf->pdev->dev, "%s\n", buf);
10682         kfree(buf);
10683         WARN_ON(i > INFO_STRING_LEN);
10684 }
10685
10686 /**
10687  * i40e_get_platform_mac_addr - get platform-specific MAC address
10688  *
10689  * @pdev: PCI device information struct
10690  * @pf: board private structure
10691  *
10692  * Look up the MAC address in Open Firmware  on systems that support it,
10693  * and use IDPROM on SPARC if no OF address is found. On return, the
10694  * I40E_FLAG_PF_MAC will be wset in pf->flags if a platform-specific value
10695  * has been selected.
10696  **/
10697 static void i40e_get_platform_mac_addr(struct pci_dev *pdev, struct i40e_pf *pf)
10698 {
10699         pf->flags &= ~I40E_FLAG_PF_MAC;
10700         if (!eth_platform_get_mac_address(&pdev->dev, pf->hw.mac.addr))
10701                 pf->flags |= I40E_FLAG_PF_MAC;
10702 }
10703
10704 /**
10705  * i40e_probe - Device initialization routine
10706  * @pdev: PCI device information struct
10707  * @ent: entry in i40e_pci_tbl
10708  *
10709  * i40e_probe initializes a PF identified by a pci_dev structure.
10710  * The OS initialization, configuring of the PF private structure,
10711  * and a hardware reset occur.
10712  *
10713  * Returns 0 on success, negative on failure
10714  **/
10715 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
10716 {
10717         struct i40e_aq_get_phy_abilities_resp abilities;
10718         struct i40e_pf *pf;
10719         struct i40e_hw *hw;
10720         static u16 pfs_found;
10721         u16 wol_nvm_bits;
10722         u16 link_status;
10723         int err;
10724         u32 val;
10725         u32 i;
10726         u8 set_fc_aq_fail;
10727
10728         err = pci_enable_device_mem(pdev);
10729         if (err)
10730                 return err;
10731
10732         /* set up for high or low dma */
10733         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
10734         if (err) {
10735                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
10736                 if (err) {
10737                         dev_err(&pdev->dev,
10738                                 "DMA configuration failed: 0x%x\n", err);
10739                         goto err_dma;
10740                 }
10741         }
10742
10743         /* set up pci connections */
10744         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
10745                                            IORESOURCE_MEM), i40e_driver_name);
10746         if (err) {
10747                 dev_info(&pdev->dev,
10748                          "pci_request_selected_regions failed %d\n", err);
10749                 goto err_pci_reg;
10750         }
10751
10752         pci_enable_pcie_error_reporting(pdev);
10753         pci_set_master(pdev);
10754
10755         /* Now that we have a PCI connection, we need to do the
10756          * low level device setup.  This is primarily setting up
10757          * the Admin Queue structures and then querying for the
10758          * device's current profile information.
10759          */
10760         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
10761         if (!pf) {
10762                 err = -ENOMEM;
10763                 goto err_pf_alloc;
10764         }
10765         pf->next_vsi = 0;
10766         pf->pdev = pdev;
10767         set_bit(__I40E_DOWN, &pf->state);
10768
10769         hw = &pf->hw;
10770         hw->back = pf;
10771
10772         pf->ioremap_len = min_t(int, pci_resource_len(pdev, 0),
10773                                 I40E_MAX_CSR_SPACE);
10774
10775         hw->hw_addr = ioremap(pci_resource_start(pdev, 0), pf->ioremap_len);
10776         if (!hw->hw_addr) {
10777                 err = -EIO;
10778                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
10779                          (unsigned int)pci_resource_start(pdev, 0),
10780                          pf->ioremap_len, err);
10781                 goto err_ioremap;
10782         }
10783         hw->vendor_id = pdev->vendor;
10784         hw->device_id = pdev->device;
10785         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
10786         hw->subsystem_vendor_id = pdev->subsystem_vendor;
10787         hw->subsystem_device_id = pdev->subsystem_device;
10788         hw->bus.device = PCI_SLOT(pdev->devfn);
10789         hw->bus.func = PCI_FUNC(pdev->devfn);
10790         pf->instance = pfs_found;
10791
10792         /* set up the locks for the AQ, do this only once in probe
10793          * and destroy them only once in remove
10794          */
10795         mutex_init(&hw->aq.asq_mutex);
10796         mutex_init(&hw->aq.arq_mutex);
10797
10798         if (debug != -1) {
10799                 pf->msg_enable = pf->hw.debug_mask;
10800                 pf->msg_enable = debug;
10801         }
10802
10803         /* do a special CORER for clearing PXE mode once at init */
10804         if (hw->revision_id == 0 &&
10805             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
10806                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
10807                 i40e_flush(hw);
10808                 msleep(200);
10809                 pf->corer_count++;
10810
10811                 i40e_clear_pxe_mode(hw);
10812         }
10813
10814         /* Reset here to make sure all is clean and to define PF 'n' */
10815         i40e_clear_hw(hw);
10816         err = i40e_pf_reset(hw);
10817         if (err) {
10818                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
10819                 goto err_pf_reset;
10820         }
10821         pf->pfr_count++;
10822
10823         hw->aq.num_arq_entries = I40E_AQ_LEN;
10824         hw->aq.num_asq_entries = I40E_AQ_LEN;
10825         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10826         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10827         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
10828
10829         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
10830                  "%s-%s:misc",
10831                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
10832
10833         err = i40e_init_shared_code(hw);
10834         if (err) {
10835                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
10836                          err);
10837                 goto err_pf_reset;
10838         }
10839
10840         /* set up a default setting for link flow control */
10841         pf->hw.fc.requested_mode = I40E_FC_NONE;
10842
10843         err = i40e_init_adminq(hw);
10844         if (err) {
10845                 if (err == I40E_ERR_FIRMWARE_API_VERSION)
10846                         dev_info(&pdev->dev,
10847                                  "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");
10848                 else
10849                         dev_info(&pdev->dev,
10850                                  "The driver for the device stopped because the device firmware failed to init. Try updating your NVM image.\n");
10851
10852                 goto err_pf_reset;
10853         }
10854
10855         /* provide nvm, fw, api versions */
10856         dev_info(&pdev->dev, "fw %d.%d.%05d api %d.%d nvm %s\n",
10857                  hw->aq.fw_maj_ver, hw->aq.fw_min_ver, hw->aq.fw_build,
10858                  hw->aq.api_maj_ver, hw->aq.api_min_ver,
10859                  i40e_nvm_version_str(hw));
10860
10861         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
10862             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
10863                 dev_info(&pdev->dev,
10864                          "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");
10865         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
10866                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
10867                 dev_info(&pdev->dev,
10868                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
10869
10870         i40e_verify_eeprom(pf);
10871
10872         /* Rev 0 hardware was never productized */
10873         if (hw->revision_id < 1)
10874                 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");
10875
10876         i40e_clear_pxe_mode(hw);
10877         err = i40e_get_capabilities(pf);
10878         if (err)
10879                 goto err_adminq_setup;
10880
10881         err = i40e_sw_init(pf);
10882         if (err) {
10883                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
10884                 goto err_sw_init;
10885         }
10886
10887         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
10888                                 hw->func_caps.num_rx_qp,
10889                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
10890         if (err) {
10891                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
10892                 goto err_init_lan_hmc;
10893         }
10894
10895         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
10896         if (err) {
10897                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
10898                 err = -ENOENT;
10899                 goto err_configure_lan_hmc;
10900         }
10901
10902         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
10903          * Ignore error return codes because if it was already disabled via
10904          * hardware settings this will fail
10905          */
10906         if (pf->flags & I40E_FLAG_STOP_FW_LLDP) {
10907                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
10908                 i40e_aq_stop_lldp(hw, true, NULL);
10909         }
10910
10911         i40e_get_mac_addr(hw, hw->mac.addr);
10912         /* allow a platform config to override the HW addr */
10913         i40e_get_platform_mac_addr(pdev, pf);
10914         if (!is_valid_ether_addr(hw->mac.addr)) {
10915                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
10916                 err = -EIO;
10917                 goto err_mac_addr;
10918         }
10919         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
10920         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
10921         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
10922         if (is_valid_ether_addr(hw->mac.port_addr))
10923                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
10924 #ifdef I40E_FCOE
10925         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
10926         if (err)
10927                 dev_info(&pdev->dev,
10928                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
10929         if (!is_valid_ether_addr(hw->mac.san_addr)) {
10930                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
10931                          hw->mac.san_addr);
10932                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
10933         }
10934         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
10935 #endif /* I40E_FCOE */
10936
10937         pci_set_drvdata(pdev, pf);
10938         pci_save_state(pdev);
10939 #ifdef CONFIG_I40E_DCB
10940         err = i40e_init_pf_dcb(pf);
10941         if (err) {
10942                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
10943                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10944                 /* Continue without DCB enabled */
10945         }
10946 #endif /* CONFIG_I40E_DCB */
10947
10948         /* set up periodic task facility */
10949         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
10950         pf->service_timer_period = HZ;
10951
10952         INIT_WORK(&pf->service_task, i40e_service_task);
10953         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
10954         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
10955
10956         /* NVM bit on means WoL disabled for the port */
10957         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
10958         if (BIT (hw->port) & wol_nvm_bits || hw->partition_id != 1)
10959                 pf->wol_en = false;
10960         else
10961                 pf->wol_en = true;
10962         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
10963
10964         /* set up the main switch operations */
10965         i40e_determine_queue_usage(pf);
10966         err = i40e_init_interrupt_scheme(pf);
10967         if (err)
10968                 goto err_switch_setup;
10969
10970         /* The number of VSIs reported by the FW is the minimum guaranteed
10971          * to us; HW supports far more and we share the remaining pool with
10972          * the other PFs. We allocate space for more than the guarantee with
10973          * the understanding that we might not get them all later.
10974          */
10975         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
10976                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
10977         else
10978                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
10979
10980         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
10981         pf->vsi = kcalloc(pf->num_alloc_vsi, sizeof(struct i40e_vsi *),
10982                           GFP_KERNEL);
10983         if (!pf->vsi) {
10984                 err = -ENOMEM;
10985                 goto err_switch_setup;
10986         }
10987
10988 #ifdef CONFIG_PCI_IOV
10989         /* prep for VF support */
10990         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10991             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
10992             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
10993                 if (pci_num_vf(pdev))
10994                         pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
10995         }
10996 #endif
10997         err = i40e_setup_pf_switch(pf, false);
10998         if (err) {
10999                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
11000                 goto err_vsis;
11001         }
11002
11003         /* Make sure flow control is set according to current settings */
11004         err = i40e_set_fc(hw, &set_fc_aq_fail, true);
11005         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_GET)
11006                 dev_dbg(&pf->pdev->dev,
11007                         "Set fc with err %s aq_err %s on get_phy_cap\n",
11008                         i40e_stat_str(hw, err),
11009                         i40e_aq_str(hw, hw->aq.asq_last_status));
11010         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_SET)
11011                 dev_dbg(&pf->pdev->dev,
11012                         "Set fc with err %s aq_err %s on set_phy_config\n",
11013                         i40e_stat_str(hw, err),
11014                         i40e_aq_str(hw, hw->aq.asq_last_status));
11015         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_UPDATE)
11016                 dev_dbg(&pf->pdev->dev,
11017                         "Set fc with err %s aq_err %s on get_link_info\n",
11018                         i40e_stat_str(hw, err),
11019                         i40e_aq_str(hw, hw->aq.asq_last_status));
11020
11021         /* if FDIR VSI was set up, start it now */
11022         for (i = 0; i < pf->num_alloc_vsi; i++) {
11023                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
11024                         i40e_vsi_open(pf->vsi[i]);
11025                         break;
11026                 }
11027         }
11028
11029         /* The driver only wants link up/down and module qualification
11030          * reports from firmware.  Note the negative logic.
11031          */
11032         err = i40e_aq_set_phy_int_mask(&pf->hw,
11033                                        ~(I40E_AQ_EVENT_LINK_UPDOWN |
11034                                          I40E_AQ_EVENT_MEDIA_NA |
11035                                          I40E_AQ_EVENT_MODULE_QUAL_FAIL), NULL);
11036         if (err)
11037                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
11038                          i40e_stat_str(&pf->hw, err),
11039                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11040
11041         /* Reconfigure hardware for allowing smaller MSS in the case
11042          * of TSO, so that we avoid the MDD being fired and causing
11043          * a reset in the case of small MSS+TSO.
11044          */
11045         val = rd32(hw, I40E_REG_MSS);
11046         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
11047                 val &= ~I40E_REG_MSS_MIN_MASK;
11048                 val |= I40E_64BYTE_MSS;
11049                 wr32(hw, I40E_REG_MSS, val);
11050         }
11051
11052         if (pf->flags & I40E_FLAG_RESTART_AUTONEG) {
11053                 msleep(75);
11054                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
11055                 if (err)
11056                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
11057                                  i40e_stat_str(&pf->hw, err),
11058                                  i40e_aq_str(&pf->hw,
11059                                              pf->hw.aq.asq_last_status));
11060         }
11061         /* The main driver is (mostly) up and happy. We need to set this state
11062          * before setting up the misc vector or we get a race and the vector
11063          * ends up disabled forever.
11064          */
11065         clear_bit(__I40E_DOWN, &pf->state);
11066
11067         /* In case of MSIX we are going to setup the misc vector right here
11068          * to handle admin queue events etc. In case of legacy and MSI
11069          * the misc functionality and queue processing is combined in
11070          * the same vector and that gets setup at open.
11071          */
11072         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
11073                 err = i40e_setup_misc_vector(pf);
11074                 if (err) {
11075                         dev_info(&pdev->dev,
11076                                  "setup of misc vector failed: %d\n", err);
11077                         goto err_vsis;
11078                 }
11079         }
11080
11081 #ifdef CONFIG_PCI_IOV
11082         /* prep for VF support */
11083         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
11084             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
11085             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
11086                 /* disable link interrupts for VFs */
11087                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
11088                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
11089                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
11090                 i40e_flush(hw);
11091
11092                 if (pci_num_vf(pdev)) {
11093                         dev_info(&pdev->dev,
11094                                  "Active VFs found, allocating resources.\n");
11095                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
11096                         if (err)
11097                                 dev_info(&pdev->dev,
11098                                          "Error %d allocating resources for existing VFs\n",
11099                                          err);
11100                 }
11101         }
11102 #endif /* CONFIG_PCI_IOV */
11103
11104         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
11105                 pf->iwarp_base_vector = i40e_get_lump(pf, pf->irq_pile,
11106                                                       pf->num_iwarp_msix,
11107                                                       I40E_IWARP_IRQ_PILE_ID);
11108                 if (pf->iwarp_base_vector < 0) {
11109                         dev_info(&pdev->dev,
11110                                  "failed to get tracking for %d vectors for IWARP err=%d\n",
11111                                  pf->num_iwarp_msix, pf->iwarp_base_vector);
11112                         pf->flags &= ~I40E_FLAG_IWARP_ENABLED;
11113                 }
11114         }
11115
11116         i40e_dbg_pf_init(pf);
11117
11118         /* tell the firmware that we're starting */
11119         i40e_send_version(pf);
11120
11121         /* since everything's happy, start the service_task timer */
11122         mod_timer(&pf->service_timer,
11123                   round_jiffies(jiffies + pf->service_timer_period));
11124
11125         /* add this PF to client device list and launch a client service task */
11126         err = i40e_lan_add_device(pf);
11127         if (err)
11128                 dev_info(&pdev->dev, "Failed to add PF to client API service list: %d\n",
11129                          err);
11130
11131 #ifdef I40E_FCOE
11132         /* create FCoE interface */
11133         i40e_fcoe_vsi_setup(pf);
11134
11135 #endif
11136 #define PCI_SPEED_SIZE 8
11137 #define PCI_WIDTH_SIZE 8
11138         /* Devices on the IOSF bus do not have this information
11139          * and will report PCI Gen 1 x 1 by default so don't bother
11140          * checking them.
11141          */
11142         if (!(pf->flags & I40E_FLAG_NO_PCI_LINK_CHECK)) {
11143                 char speed[PCI_SPEED_SIZE] = "Unknown";
11144                 char width[PCI_WIDTH_SIZE] = "Unknown";
11145
11146                 /* Get the negotiated link width and speed from PCI config
11147                  * space
11148                  */
11149                 pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA,
11150                                           &link_status);
11151
11152                 i40e_set_pci_config_data(hw, link_status);
11153
11154                 switch (hw->bus.speed) {
11155                 case i40e_bus_speed_8000:
11156                         strncpy(speed, "8.0", PCI_SPEED_SIZE); break;
11157                 case i40e_bus_speed_5000:
11158                         strncpy(speed, "5.0", PCI_SPEED_SIZE); break;
11159                 case i40e_bus_speed_2500:
11160                         strncpy(speed, "2.5", PCI_SPEED_SIZE); break;
11161                 default:
11162                         break;
11163                 }
11164                 switch (hw->bus.width) {
11165                 case i40e_bus_width_pcie_x8:
11166                         strncpy(width, "8", PCI_WIDTH_SIZE); break;
11167                 case i40e_bus_width_pcie_x4:
11168                         strncpy(width, "4", PCI_WIDTH_SIZE); break;
11169                 case i40e_bus_width_pcie_x2:
11170                         strncpy(width, "2", PCI_WIDTH_SIZE); break;
11171                 case i40e_bus_width_pcie_x1:
11172                         strncpy(width, "1", PCI_WIDTH_SIZE); break;
11173                 default:
11174                         break;
11175                 }
11176
11177                 dev_info(&pdev->dev, "PCI-Express: Speed %sGT/s Width x%s\n",
11178                          speed, width);
11179
11180                 if (hw->bus.width < i40e_bus_width_pcie_x8 ||
11181                     hw->bus.speed < i40e_bus_speed_8000) {
11182                         dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
11183                         dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
11184                 }
11185         }
11186
11187         /* get the requested speeds from the fw */
11188         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
11189         if (err)
11190                 dev_dbg(&pf->pdev->dev, "get requested speeds ret =  %s last_status =  %s\n",
11191                         i40e_stat_str(&pf->hw, err),
11192                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11193         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
11194
11195         /* get the supported phy types from the fw */
11196         err = i40e_aq_get_phy_capabilities(hw, false, true, &abilities, NULL);
11197         if (err)
11198                 dev_dbg(&pf->pdev->dev, "get supported phy types ret =  %s last_status =  %s\n",
11199                         i40e_stat_str(&pf->hw, err),
11200                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11201         pf->hw.phy.phy_types = le32_to_cpu(abilities.phy_type);
11202
11203         /* Add a filter to drop all Flow control frames from any VSI from being
11204          * transmitted. By doing so we stop a malicious VF from sending out
11205          * PAUSE or PFC frames and potentially controlling traffic for other
11206          * PF/VF VSIs.
11207          * The FW can still send Flow control frames if enabled.
11208          */
11209         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
11210                                                        pf->main_vsi_seid);
11211
11212         if ((pf->hw.device_id == I40E_DEV_ID_10G_BASE_T) ||
11213             (pf->hw.device_id == I40E_DEV_ID_10G_BASE_T4))
11214                 pf->flags |= I40E_FLAG_HAVE_10GBASET_PHY;
11215
11216         /* print a string summarizing features */
11217         i40e_print_features(pf);
11218
11219         return 0;
11220
11221         /* Unwind what we've done if something failed in the setup */
11222 err_vsis:
11223         set_bit(__I40E_DOWN, &pf->state);
11224         i40e_clear_interrupt_scheme(pf);
11225         kfree(pf->vsi);
11226 err_switch_setup:
11227         i40e_reset_interrupt_capability(pf);
11228         del_timer_sync(&pf->service_timer);
11229 err_mac_addr:
11230 err_configure_lan_hmc:
11231         (void)i40e_shutdown_lan_hmc(hw);
11232 err_init_lan_hmc:
11233         kfree(pf->qp_pile);
11234 err_sw_init:
11235 err_adminq_setup:
11236 err_pf_reset:
11237         iounmap(hw->hw_addr);
11238 err_ioremap:
11239         kfree(pf);
11240 err_pf_alloc:
11241         pci_disable_pcie_error_reporting(pdev);
11242         pci_release_selected_regions(pdev,
11243                                      pci_select_bars(pdev, IORESOURCE_MEM));
11244 err_pci_reg:
11245 err_dma:
11246         pci_disable_device(pdev);
11247         return err;
11248 }
11249
11250 /**
11251  * i40e_remove - Device removal routine
11252  * @pdev: PCI device information struct
11253  *
11254  * i40e_remove is called by the PCI subsystem to alert the driver
11255  * that is should release a PCI device.  This could be caused by a
11256  * Hot-Plug event, or because the driver is going to be removed from
11257  * memory.
11258  **/
11259 static void i40e_remove(struct pci_dev *pdev)
11260 {
11261         struct i40e_pf *pf = pci_get_drvdata(pdev);
11262         struct i40e_hw *hw = &pf->hw;
11263         i40e_status ret_code;
11264         int i;
11265
11266         i40e_dbg_pf_exit(pf);
11267
11268         i40e_ptp_stop(pf);
11269
11270         /* Disable RSS in hw */
11271         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), 0);
11272         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), 0);
11273
11274         /* no more scheduling of any task */
11275         set_bit(__I40E_SUSPENDED, &pf->state);
11276         set_bit(__I40E_DOWN, &pf->state);
11277         if (pf->service_timer.data)
11278                 del_timer_sync(&pf->service_timer);
11279         if (pf->service_task.func)
11280                 cancel_work_sync(&pf->service_task);
11281
11282         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
11283                 i40e_free_vfs(pf);
11284                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
11285         }
11286
11287         i40e_fdir_teardown(pf);
11288
11289         /* If there is a switch structure or any orphans, remove them.
11290          * This will leave only the PF's VSI remaining.
11291          */
11292         for (i = 0; i < I40E_MAX_VEB; i++) {
11293                 if (!pf->veb[i])
11294                         continue;
11295
11296                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
11297                     pf->veb[i]->uplink_seid == 0)
11298                         i40e_switch_branch_release(pf->veb[i]);
11299         }
11300
11301         /* Now we can shutdown the PF's VSI, just before we kill
11302          * adminq and hmc.
11303          */
11304         if (pf->vsi[pf->lan_vsi])
11305                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
11306
11307         /* remove attached clients */
11308         ret_code = i40e_lan_del_device(pf);
11309         if (ret_code) {
11310                 dev_warn(&pdev->dev, "Failed to delete client device: %d\n",
11311                          ret_code);
11312         }
11313
11314         /* shutdown and destroy the HMC */
11315         if (hw->hmc.hmc_obj) {
11316                 ret_code = i40e_shutdown_lan_hmc(hw);
11317                 if (ret_code)
11318                         dev_warn(&pdev->dev,
11319                                  "Failed to destroy the HMC resources: %d\n",
11320                                  ret_code);
11321         }
11322
11323         /* shutdown the adminq */
11324         ret_code = i40e_shutdown_adminq(hw);
11325         if (ret_code)
11326                 dev_warn(&pdev->dev,
11327                          "Failed to destroy the Admin Queue resources: %d\n",
11328                          ret_code);
11329
11330         /* destroy the locks only once, here */
11331         mutex_destroy(&hw->aq.arq_mutex);
11332         mutex_destroy(&hw->aq.asq_mutex);
11333
11334         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
11335         i40e_clear_interrupt_scheme(pf);
11336         for (i = 0; i < pf->num_alloc_vsi; i++) {
11337                 if (pf->vsi[i]) {
11338                         i40e_vsi_clear_rings(pf->vsi[i]);
11339                         i40e_vsi_clear(pf->vsi[i]);
11340                         pf->vsi[i] = NULL;
11341                 }
11342         }
11343
11344         for (i = 0; i < I40E_MAX_VEB; i++) {
11345                 kfree(pf->veb[i]);
11346                 pf->veb[i] = NULL;
11347         }
11348
11349         kfree(pf->qp_pile);
11350         kfree(pf->vsi);
11351
11352         iounmap(hw->hw_addr);
11353         kfree(pf);
11354         pci_release_selected_regions(pdev,
11355                                      pci_select_bars(pdev, IORESOURCE_MEM));
11356
11357         pci_disable_pcie_error_reporting(pdev);
11358         pci_disable_device(pdev);
11359 }
11360
11361 /**
11362  * i40e_pci_error_detected - warning that something funky happened in PCI land
11363  * @pdev: PCI device information struct
11364  *
11365  * Called to warn that something happened and the error handling steps
11366  * are in progress.  Allows the driver to quiesce things, be ready for
11367  * remediation.
11368  **/
11369 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
11370                                                 enum pci_channel_state error)
11371 {
11372         struct i40e_pf *pf = pci_get_drvdata(pdev);
11373
11374         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
11375
11376         /* shutdown all operations */
11377         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
11378                 rtnl_lock();
11379                 i40e_prep_for_reset(pf);
11380                 rtnl_unlock();
11381         }
11382
11383         /* Request a slot reset */
11384         return PCI_ERS_RESULT_NEED_RESET;
11385 }
11386
11387 /**
11388  * i40e_pci_error_slot_reset - a PCI slot reset just happened
11389  * @pdev: PCI device information struct
11390  *
11391  * Called to find if the driver can work with the device now that
11392  * the pci slot has been reset.  If a basic connection seems good
11393  * (registers are readable and have sane content) then return a
11394  * happy little PCI_ERS_RESULT_xxx.
11395  **/
11396 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
11397 {
11398         struct i40e_pf *pf = pci_get_drvdata(pdev);
11399         pci_ers_result_t result;
11400         int err;
11401         u32 reg;
11402
11403         dev_dbg(&pdev->dev, "%s\n", __func__);
11404         if (pci_enable_device_mem(pdev)) {
11405                 dev_info(&pdev->dev,
11406                          "Cannot re-enable PCI device after reset.\n");
11407                 result = PCI_ERS_RESULT_DISCONNECT;
11408         } else {
11409                 pci_set_master(pdev);
11410                 pci_restore_state(pdev);
11411                 pci_save_state(pdev);
11412                 pci_wake_from_d3(pdev, false);
11413
11414                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
11415                 if (reg == 0)
11416                         result = PCI_ERS_RESULT_RECOVERED;
11417                 else
11418                         result = PCI_ERS_RESULT_DISCONNECT;
11419         }
11420
11421         err = pci_cleanup_aer_uncorrect_error_status(pdev);
11422         if (err) {
11423                 dev_info(&pdev->dev,
11424                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
11425                          err);
11426                 /* non-fatal, continue */
11427         }
11428
11429         return result;
11430 }
11431
11432 /**
11433  * i40e_pci_error_resume - restart operations after PCI error recovery
11434  * @pdev: PCI device information struct
11435  *
11436  * Called to allow the driver to bring things back up after PCI error
11437  * and/or reset recovery has finished.
11438  **/
11439 static void i40e_pci_error_resume(struct pci_dev *pdev)
11440 {
11441         struct i40e_pf *pf = pci_get_drvdata(pdev);
11442
11443         dev_dbg(&pdev->dev, "%s\n", __func__);
11444         if (test_bit(__I40E_SUSPENDED, &pf->state))
11445                 return;
11446
11447         rtnl_lock();
11448         i40e_handle_reset_warning(pf);
11449         rtnl_unlock();
11450 }
11451
11452 /**
11453  * i40e_shutdown - PCI callback for shutting down
11454  * @pdev: PCI device information struct
11455  **/
11456 static void i40e_shutdown(struct pci_dev *pdev)
11457 {
11458         struct i40e_pf *pf = pci_get_drvdata(pdev);
11459         struct i40e_hw *hw = &pf->hw;
11460
11461         set_bit(__I40E_SUSPENDED, &pf->state);
11462         set_bit(__I40E_DOWN, &pf->state);
11463         rtnl_lock();
11464         i40e_prep_for_reset(pf);
11465         rtnl_unlock();
11466
11467         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11468         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11469
11470         del_timer_sync(&pf->service_timer);
11471         cancel_work_sync(&pf->service_task);
11472         i40e_fdir_teardown(pf);
11473
11474         rtnl_lock();
11475         i40e_prep_for_reset(pf);
11476         rtnl_unlock();
11477
11478         wr32(hw, I40E_PFPM_APM,
11479              (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11480         wr32(hw, I40E_PFPM_WUFC,
11481              (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11482
11483         i40e_clear_interrupt_scheme(pf);
11484
11485         if (system_state == SYSTEM_POWER_OFF) {
11486                 pci_wake_from_d3(pdev, pf->wol_en);
11487                 pci_set_power_state(pdev, PCI_D3hot);
11488         }
11489 }
11490
11491 #ifdef CONFIG_PM
11492 /**
11493  * i40e_suspend - PCI callback for moving to D3
11494  * @pdev: PCI device information struct
11495  **/
11496 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
11497 {
11498         struct i40e_pf *pf = pci_get_drvdata(pdev);
11499         struct i40e_hw *hw = &pf->hw;
11500         int retval = 0;
11501
11502         set_bit(__I40E_SUSPENDED, &pf->state);
11503         set_bit(__I40E_DOWN, &pf->state);
11504
11505         rtnl_lock();
11506         i40e_prep_for_reset(pf);
11507         rtnl_unlock();
11508
11509         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11510         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11511
11512         i40e_stop_misc_vector(pf);
11513
11514         retval = pci_save_state(pdev);
11515         if (retval)
11516                 return retval;
11517
11518         pci_wake_from_d3(pdev, pf->wol_en);
11519         pci_set_power_state(pdev, PCI_D3hot);
11520
11521         return retval;
11522 }
11523
11524 /**
11525  * i40e_resume - PCI callback for waking up from D3
11526  * @pdev: PCI device information struct
11527  **/
11528 static int i40e_resume(struct pci_dev *pdev)
11529 {
11530         struct i40e_pf *pf = pci_get_drvdata(pdev);
11531         u32 err;
11532
11533         pci_set_power_state(pdev, PCI_D0);
11534         pci_restore_state(pdev);
11535         /* pci_restore_state() clears dev->state_saves, so
11536          * call pci_save_state() again to restore it.
11537          */
11538         pci_save_state(pdev);
11539
11540         err = pci_enable_device_mem(pdev);
11541         if (err) {
11542                 dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n");
11543                 return err;
11544         }
11545         pci_set_master(pdev);
11546
11547         /* no wakeup events while running */
11548         pci_wake_from_d3(pdev, false);
11549
11550         /* handling the reset will rebuild the device state */
11551         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
11552                 clear_bit(__I40E_DOWN, &pf->state);
11553                 rtnl_lock();
11554                 i40e_reset_and_rebuild(pf, false);
11555                 rtnl_unlock();
11556         }
11557
11558         return 0;
11559 }
11560
11561 #endif
11562 static const struct pci_error_handlers i40e_err_handler = {
11563         .error_detected = i40e_pci_error_detected,
11564         .slot_reset = i40e_pci_error_slot_reset,
11565         .resume = i40e_pci_error_resume,
11566 };
11567
11568 static struct pci_driver i40e_driver = {
11569         .name     = i40e_driver_name,
11570         .id_table = i40e_pci_tbl,
11571         .probe    = i40e_probe,
11572         .remove   = i40e_remove,
11573 #ifdef CONFIG_PM
11574         .suspend  = i40e_suspend,
11575         .resume   = i40e_resume,
11576 #endif
11577         .shutdown = i40e_shutdown,
11578         .err_handler = &i40e_err_handler,
11579         .sriov_configure = i40e_pci_sriov_configure,
11580 };
11581
11582 /**
11583  * i40e_init_module - Driver registration routine
11584  *
11585  * i40e_init_module is the first routine called when the driver is
11586  * loaded. All it does is register with the PCI subsystem.
11587  **/
11588 static int __init i40e_init_module(void)
11589 {
11590         pr_info("%s: %s - version %s\n", i40e_driver_name,
11591                 i40e_driver_string, i40e_driver_version_str);
11592         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
11593
11594         /* we will see if single thread per module is enough for now,
11595          * it can't be any worse than using the system workqueue which
11596          * was already single threaded
11597          */
11598         i40e_wq = create_singlethread_workqueue(i40e_driver_name);
11599         if (!i40e_wq) {
11600                 pr_err("%s: Failed to create workqueue\n", i40e_driver_name);
11601                 return -ENOMEM;
11602         }
11603
11604         i40e_dbg_init();
11605         return pci_register_driver(&i40e_driver);
11606 }
11607 module_init(i40e_init_module);
11608
11609 /**
11610  * i40e_exit_module - Driver exit cleanup routine
11611  *
11612  * i40e_exit_module is called just before the driver is removed
11613  * from memory.
11614  **/
11615 static void __exit i40e_exit_module(void)
11616 {
11617         pci_unregister_driver(&i40e_driver);
11618         destroy_workqueue(i40e_wq);
11619         i40e_dbg_exit();
11620 }
11621 module_exit(i40e_exit_module);