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 #if IS_ENABLED(CONFIG_VXLAN)
  35 #include <net/vxlan.h>
  36 #endif
  37 #if IS_ENABLED(CONFIG_GENEVE)
  38 #include <net/geneve.h>
  39 #endif
  40
  41 const char i40e_driver_name[] = "i40e";
  42 static const char i40e_driver_string[] =
  43                         "Intel(R) Ethernet Connection XL710 Network Driver";
  44
  45 #define DRV_KERN "-k"
  46
  47 #define DRV_VERSION_MAJOR 1
  48 #define DRV_VERSION_MINOR 5
  49 #define DRV_VERSION_BUILD 16
  50 #define DRV_VERSION __stringify(DRV_VERSION_MAJOR) "." \
  51              __stringify(DRV_VERSION_MINOR) "." \
  52              __stringify(DRV_VERSION_BUILD)    DRV_KERN
  53 const char i40e_driver_version_str[] = DRV_VERSION;
  54 static const char i40e_copyright[] = "Copyright (c) 2013 - 2014 Intel Corporation.";
  55
  56 /* a bit of forward declarations */
  57 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi);
  58 static void i40e_handle_reset_warning(struct i40e_pf *pf);
  59 static int i40e_add_vsi(struct i40e_vsi *vsi);
  60 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi);
  61 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit);
  62 static int i40e_setup_misc_vector(struct i40e_pf *pf);
  63 static void i40e_determine_queue_usage(struct i40e_pf *pf);
  64 static int i40e_setup_pf_filter_control(struct i40e_pf *pf);
  65 static void i40e_fill_rss_lut(struct i40e_pf *pf, u8 *lut,
  66                               u16 rss_table_size, u16 rss_size);
  67 static void i40e_fdir_sb_setup(struct i40e_pf *pf);
  68 static int i40e_veb_get_bw_info(struct i40e_veb *veb);
  69
  70 /* i40e_pci_tbl - PCI Device ID Table
  71  *
  72  * Last entry must be all 0s
  73  *
  74  * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
  75  *   Class, Class Mask, private data (not used) }
  76  */
  77 static const struct pci_device_id i40e_pci_tbl[] = {
  78         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_XL710), 0},
  79         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QEMU), 0},
  80         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_B), 0},
  81         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_C), 0},
  82         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_A), 0},
  83         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_B), 0},
  84         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_C), 0},
  85         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T), 0},
  86         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T4), 0},
  87         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  88         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_X722), 0},
  89         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_X722), 0},
  90         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_X722), 0},
  91         {PCI_VDEVICE(INTEL, I40E_DEV_ID_1G_BASE_T_X722), 0},
  92         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T_X722), 0},
  93         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_I_X722), 0},
  94         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_I_X722), 0},
  95         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  96         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2_A), 0},
  97         /* required last entry */
  98         {0, }
  99 };
 100 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
 101
 102 #define I40E_MAX_VF_COUNT 128
 103 static int debug = -1;
 104 module_param(debug, int, 0);
 105 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)");
 106
 107 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
 108 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
 109 MODULE_LICENSE("GPL");
 110 MODULE_VERSION(DRV_VERSION);
 111
 112 static struct workqueue_struct *i40e_wq;
 113
 114 /**
 115  * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
 116  * @hw:   pointer to the HW structure
 117  * @mem:  ptr to mem struct to fill out
 118  * @size: size of memory requested
 119  * @alignment: what to align the allocation to
 120  **/
 121 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
 122                             u64 size, u32 alignment)
 123 {
 124         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 125
 126         mem->size = ALIGN(size, alignment);
 127         mem->va = dma_zalloc_coherent(&pf->pdev->dev, mem->size,
 128                                       &mem->pa, GFP_KERNEL);
 129         if (!mem->va)
 130                 return -ENOMEM;
 131
 132         return 0;
 133 }
 134
 135 /**
 136  * i40e_free_dma_mem_d - OS specific memory free for shared code
 137  * @hw:   pointer to the HW structure
 138  * @mem:  ptr to mem struct to free
 139  **/
 140 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
 141 {
 142         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 143
 144         dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
 145         mem->va = NULL;
 146         mem->pa = 0;
 147         mem->size = 0;
 148
 149         return 0;
 150 }
 151
 152 /**
 153  * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 154  * @hw:   pointer to the HW structure
 155  * @mem:  ptr to mem struct to fill out
 156  * @size: size of memory requested
 157  **/
 158 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
 159                              u32 size)
 160 {
 161         mem->size = size;
 162         mem->va = kzalloc(size, GFP_KERNEL);
 163
 164         if (!mem->va)
 165                 return -ENOMEM;
 166
 167         return 0;
 168 }
 169
 170 /**
 171  * i40e_free_virt_mem_d - OS specific memory free for shared code
 172  * @hw:   pointer to the HW structure
 173  * @mem:  ptr to mem struct to free
 174  **/
 175 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
 176 {
 177         /* it's ok to kfree a NULL pointer */
 178         kfree(mem->va);
 179         mem->va = NULL;
 180         mem->size = 0;
 181
 182         return 0;
 183 }
 184
 185 /**
 186  * i40e_get_lump - find a lump of free generic resource
 187  * @pf: board private structure
 188  * @pile: the pile of resource to search
 189  * @needed: the number of items needed
 190  * @id: an owner id to stick on the items assigned
 191  *
 192  * Returns the base item index of the lump, or negative for error
 193  *
 194  * The search_hint trick and lack of advanced fit-finding only work
 195  * because we're highly likely to have all the same size lump requests.
 196  * Linear search time and any fragmentation should be minimal.
 197  **/
 198 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 199                          u16 needed, u16 id)
 200 {
 201         int ret = -ENOMEM;
 202         int i, j;
 203
 204         if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
 205                 dev_info(&pf->pdev->dev,
 206                          "param err: pile=%p needed=%d id=0x%04x\n",
 207                          pile, needed, id);
 208                 return -EINVAL;
 209         }
 210
 211         /* start the linear search with an imperfect hint */
 212         i = pile->search_hint;
 213         while (i < pile->num_entries) {
 214                 /* skip already allocated entries */
 215                 if (pile->list[i] & I40E_PILE_VALID_BIT) {
 216                         i++;
 217                         continue;
 218                 }
 219
 220                 /* do we have enough in this lump? */
 221                 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
 222                         if (pile->list[i+j] & I40E_PILE_VALID_BIT)
 223                                 break;
 224                 }
 225
 226                 if (j == needed) {
 227                         /* there was enough, so assign it to the requestor */
 228                         for (j = 0; j < needed; j++)
 229                                 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 230                         ret = i;
 231                         pile->search_hint = i + j;
 232                         break;
 233                 }
 234
 235                 /* not enough, so skip over it and continue looking */
 236                 i += j;
 237         }
 238
 239         return ret;
 240 }
 241
 242 /**
 243  * i40e_put_lump - return a lump of generic resource
 244  * @pile: the pile of resource to search
 245  * @index: the base item index
 246  * @id: the owner id of the items assigned
 247  *
 248  * Returns the count of items in the lump
 249  **/
 250 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
 251 {
 252         int valid_id = (id | I40E_PILE_VALID_BIT);
 253         int count = 0;
 254         int i;
 255
 256         if (!pile || index >= pile->num_entries)
 257                 return -EINVAL;
 258
 259         for (i = index;
 260              i < pile->num_entries && pile->list[i] == valid_id;
 261              i++) {
 262                 pile->list[i] = 0;
 263                 count++;
 264         }
 265
 266         if (count && index < pile->search_hint)
 267                 pile->search_hint = index;
 268
 269         return count;
 270 }
 271
 272 /**
 273  * i40e_find_vsi_from_id - searches for the vsi with the given id
 274  * @pf - the pf structure to search for the vsi
 275  * @id - id of the vsi it is searching for
 276  **/
 277 struct i40e_vsi *i40e_find_vsi_from_id(struct i40e_pf *pf, u16 id)
 278 {
 279         int i;
 280
 281         for (i = 0; i < pf->num_alloc_vsi; i++)
 282                 if (pf->vsi[i] && (pf->vsi[i]->id == id))
 283                         return pf->vsi[i];
 284
 285         return NULL;
 286 }
 287
 288 /**
 289  * i40e_service_event_schedule - Schedule the service task to wake up
 290  * @pf: board private structure
 291  *
 292  * If not already scheduled, this puts the task into the work queue
 293  **/
 294 void i40e_service_event_schedule(struct i40e_pf *pf)
 295 {
 296         if (!test_bit(__I40E_DOWN, &pf->state) &&
 297             !test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state) &&
 298             !test_and_set_bit(__I40E_SERVICE_SCHED, &pf->state))
 299                 queue_work(i40e_wq, &pf->service_task);
 300 }
 301
 302 /**
 303  * i40e_tx_timeout - Respond to a Tx Hang
 304  * @netdev: network interface device structure
 305  *
 306  * If any port has noticed a Tx timeout, it is likely that the whole
 307  * device is munged, not just the one netdev port, so go for the full
 308  * reset.
 309  **/
 310 #ifdef I40E_FCOE
 311 void i40e_tx_timeout(struct net_device *netdev)
 312 #else
 313 static void i40e_tx_timeout(struct net_device *netdev)
 314 #endif
 315 {
 316         struct i40e_netdev_priv *np = netdev_priv(netdev);
 317         struct i40e_vsi *vsi = np->vsi;
 318         struct i40e_pf *pf = vsi->back;
 319         struct i40e_ring *tx_ring = NULL;
 320         unsigned int i, hung_queue = 0;
 321         u32 head, val;
 322
 323         pf->tx_timeout_count++;
 324
 325         /* find the stopped queue the same way the stack does */
 326         for (i = 0; i < netdev->num_tx_queues; i++) {
 327                 struct netdev_queue *q;
 328                 unsigned long trans_start;
 329
 330                 q = netdev_get_tx_queue(netdev, i);
 331                 trans_start = q->trans_start;
 332                 if (netif_xmit_stopped(q) &&
 333                     time_after(jiffies,
 334                                (trans_start + netdev->watchdog_timeo))) {
 335                         hung_queue = i;
 336                         break;
 337                 }
 338         }
 339
 340         if (i == netdev->num_tx_queues) {
 341                 netdev_info(netdev, "tx_timeout: no netdev hung queue found\n");
 342         } else {
 343                 /* now that we have an index, find the tx_ring struct */
 344                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 345                         if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
 346                                 if (hung_queue ==
 347                                     vsi->tx_rings[i]->queue_index) {
 348                                         tx_ring = vsi->tx_rings[i];
 349                                         break;
 350                                 }
 351                         }
 352                 }
 353         }
 354
 355         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 356                 pf->tx_timeout_recovery_level = 1;  /* reset after some time */
 357         else if (time_before(jiffies,
 358                       (pf->tx_timeout_last_recovery + netdev->watchdog_timeo)))
 359                 return;   /* don't do any new action before the next timeout */
 360
 361         if (tx_ring) {
 362                 head = i40e_get_head(tx_ring);
 363                 /* Read interrupt register */
 364                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
 365                         val = rd32(&pf->hw,
 366                              I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
 367                                                 tx_ring->vsi->base_vector - 1));
 368                 else
 369                         val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
 370
 371                 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",
 372                             vsi->seid, hung_queue, tx_ring->next_to_clean,
 373                             head, tx_ring->next_to_use,
 374                             readl(tx_ring->tail), val);
 375         }
 376
 377         pf->tx_timeout_last_recovery = jiffies;
 378         netdev_info(netdev, "tx_timeout recovery level %d, hung_queue %d\n",
 379                     pf->tx_timeout_recovery_level, hung_queue);
 380
 381         switch (pf->tx_timeout_recovery_level) {
 382         case 1:
 383                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
 384                 break;
 385         case 2:
 386                 set_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
 387                 break;
 388         case 3:
 389                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
 390                 break;
 391         default:
 392                 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
 393                 break;
 394         }
 395
 396         i40e_service_event_schedule(pf);
 397         pf->tx_timeout_recovery_level++;
 398 }
 399
 400 /**
 401  * i40e_get_vsi_stats_struct - Get System Network Statistics
 402  * @vsi: the VSI we care about
 403  *
 404  * Returns the address of the device statistics structure.
 405  * The statistics are actually updated from the service task.
 406  **/
 407 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 408 {
 409         return &vsi->net_stats;
 410 }
 411
 412 /**
 413  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 414  * @netdev: network interface device structure
 415  *
 416  * Returns the address of the device statistics structure.
 417  * The statistics are actually updated from the service task.
 418  **/
 419 #ifdef I40E_FCOE
 420 struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 421                                              struct net_device *netdev,
 422                                              struct rtnl_link_stats64 *stats)
 423 #else
 424 static struct rtnl_link_stats64 *i40e_get_netdev_stats_struct(
 425                                              struct net_device *netdev,
 426                                              struct rtnl_link_stats64 *stats)
 427 #endif
 428 {
 429         struct i40e_netdev_priv *np = netdev_priv(netdev);
 430         struct i40e_ring *tx_ring, *rx_ring;
 431         struct i40e_vsi *vsi = np->vsi;
 432         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 433         int i;
 434
 435         if (test_bit(__I40E_DOWN, &vsi->state))
 436                 return stats;
 437
 438         if (!vsi->tx_rings)
 439                 return stats;
 440
 441         rcu_read_lock();
 442         for (i = 0; i < vsi->num_queue_pairs; i++) {
 443                 u64 bytes, packets;
 444                 unsigned int start;
 445
 446                 tx_ring = ACCESS_ONCE(vsi->tx_rings[i]);
 447                 if (!tx_ring)
 448                         continue;
 449
 450                 do {
 451                         start = u64_stats_fetch_begin_irq(&tx_ring->syncp);
 452                         packets = tx_ring->stats.packets;
 453                         bytes   = tx_ring->stats.bytes;
 454                 } while (u64_stats_fetch_retry_irq(&tx_ring->syncp, start));
 455
 456                 stats->tx_packets += packets;
 457                 stats->tx_bytes   += bytes;
 458                 rx_ring = &tx_ring[1];
 459
 460                 do {
 461                         start = u64_stats_fetch_begin_irq(&rx_ring->syncp);
 462                         packets = rx_ring->stats.packets;
 463                         bytes   = rx_ring->stats.bytes;
 464                 } while (u64_stats_fetch_retry_irq(&rx_ring->syncp, start));
 465
 466                 stats->rx_packets += packets;
 467                 stats->rx_bytes   += bytes;
 468         }
 469         rcu_read_unlock();
 470
 471         /* following stats updated by i40e_watchdog_subtask() */
 472         stats->multicast        = vsi_stats->multicast;
 473         stats->tx_errors        = vsi_stats->tx_errors;
 474         stats->tx_dropped       = vsi_stats->tx_dropped;
 475         stats->rx_errors        = vsi_stats->rx_errors;
 476         stats->rx_dropped       = vsi_stats->rx_dropped;
 477         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 478         stats->rx_length_errors = vsi_stats->rx_length_errors;
 479
 480         return stats;
 481 }
 482
 483 /**
 484  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 485  * @vsi: the VSI to have its stats reset
 486  **/
 487 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 488 {
 489         struct rtnl_link_stats64 *ns;
 490         int i;
 491
 492         if (!vsi)
 493                 return;
 494
 495         ns = i40e_get_vsi_stats_struct(vsi);
 496         memset(ns, 0, sizeof(*ns));
 497         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 498         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 499         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 500         if (vsi->rx_rings && vsi->rx_rings[0]) {
 501                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 502                         memset(&vsi->rx_rings[i]->stats, 0,
 503                                sizeof(vsi->rx_rings[i]->stats));
 504                         memset(&vsi->rx_rings[i]->rx_stats, 0,
 505                                sizeof(vsi->rx_rings[i]->rx_stats));
 506                         memset(&vsi->tx_rings[i]->stats, 0,
 507                                sizeof(vsi->tx_rings[i]->stats));
 508                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 509                                sizeof(vsi->tx_rings[i]->tx_stats));
 510                 }
 511         }
 512         vsi->stat_offsets_loaded = false;
 513 }
 514
 515 /**
 516  * i40e_pf_reset_stats - Reset all of the stats for the given PF
 517  * @pf: the PF to be reset
 518  **/
 519 void i40e_pf_reset_stats(struct i40e_pf *pf)
 520 {
 521         int i;
 522
 523         memset(&pf->stats, 0, sizeof(pf->stats));
 524         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 525         pf->stat_offsets_loaded = false;
 526
 527         for (i = 0; i < I40E_MAX_VEB; i++) {
 528                 if (pf->veb[i]) {
 529                         memset(&pf->veb[i]->stats, 0,
 530                                sizeof(pf->veb[i]->stats));
 531                         memset(&pf->veb[i]->stats_offsets, 0,
 532                                sizeof(pf->veb[i]->stats_offsets));
 533                         pf->veb[i]->stat_offsets_loaded = false;
 534                 }
 535         }
 536 }
 537
 538 /**
 539  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 540  * @hw: ptr to the hardware info
 541  * @hireg: the high 32 bit reg to read
 542  * @loreg: the low 32 bit reg to read
 543  * @offset_loaded: has the initial offset been loaded yet
 544  * @offset: ptr to current offset value
 545  * @stat: ptr to the stat
 546  *
 547  * Since the device stats are not reset at PFReset, they likely will not
 548  * be zeroed when the driver starts.  We'll save the first values read
 549  * and use them as offsets to be subtracted from the raw values in order
 550  * to report stats that count from zero.  In the process, we also manage
 551  * the potential roll-over.
 552  **/
 553 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 554                                bool offset_loaded, u64 *offset, u64 *stat)
 555 {
 556         u64 new_data;
 557
 558         if (hw->device_id == I40E_DEV_ID_QEMU) {
 559                 new_data = rd32(hw, loreg);
 560                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 561         } else {
 562                 new_data = rd64(hw, loreg);
 563         }
 564         if (!offset_loaded)
 565                 *offset = new_data;
 566         if (likely(new_data >= *offset))
 567                 *stat = new_data - *offset;
 568         else
 569                 *stat = (new_data + BIT_ULL(48)) - *offset;
 570         *stat &= 0xFFFFFFFFFFFFULL;
 571 }
 572
 573 /**
 574  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 575  * @hw: ptr to the hardware info
 576  * @reg: the hw reg to read
 577  * @offset_loaded: has the initial offset been loaded yet
 578  * @offset: ptr to current offset value
 579  * @stat: ptr to the stat
 580  **/
 581 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 582                                bool offset_loaded, u64 *offset, u64 *stat)
 583 {
 584         u32 new_data;
 585
 586         new_data = rd32(hw, reg);
 587         if (!offset_loaded)
 588                 *offset = new_data;
 589         if (likely(new_data >= *offset))
 590                 *stat = (u32)(new_data - *offset);
 591         else
 592                 *stat = (u32)((new_data + BIT_ULL(32)) - *offset);
 593 }
 594
 595 /**
 596  * i40e_update_eth_stats - Update VSI-specific ethernet statistics counters.
 597  * @vsi: the VSI to be updated
 598  **/
 599 void i40e_update_eth_stats(struct i40e_vsi *vsi)
 600 {
 601         int stat_idx = le16_to_cpu(vsi->info.stat_counter_idx);
 602         struct i40e_pf *pf = vsi->back;
 603         struct i40e_hw *hw = &pf->hw;
 604         struct i40e_eth_stats *oes;
 605         struct i40e_eth_stats *es;     /* device's eth stats */
 606
 607         es = &vsi->eth_stats;
 608         oes = &vsi->eth_stats_offsets;
 609
 610         /* Gather up the stats that the hw collects */
 611         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 612                            vsi->stat_offsets_loaded,
 613                            &oes->tx_errors, &es->tx_errors);
 614         i40e_stat_update32(hw, I40E_GLV_RDPC(stat_idx),
 615                            vsi->stat_offsets_loaded,
 616                            &oes->rx_discards, &es->rx_discards);
 617         i40e_stat_update32(hw, I40E_GLV_RUPP(stat_idx),
 618                            vsi->stat_offsets_loaded,
 619                            &oes->rx_unknown_protocol, &es->rx_unknown_protocol);
 620         i40e_stat_update32(hw, I40E_GLV_TEPC(stat_idx),
 621                            vsi->stat_offsets_loaded,
 622                            &oes->tx_errors, &es->tx_errors);
 623
 624         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 625                            I40E_GLV_GORCL(stat_idx),
 626                            vsi->stat_offsets_loaded,
 627                            &oes->rx_bytes, &es->rx_bytes);
 628         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 629                            I40E_GLV_UPRCL(stat_idx),
 630                            vsi->stat_offsets_loaded,
 631                            &oes->rx_unicast, &es->rx_unicast);
 632         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 633                            I40E_GLV_MPRCL(stat_idx),
 634                            vsi->stat_offsets_loaded,
 635                            &oes->rx_multicast, &es->rx_multicast);
 636         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 637                            I40E_GLV_BPRCL(stat_idx),
 638                            vsi->stat_offsets_loaded,
 639                            &oes->rx_broadcast, &es->rx_broadcast);
 640
 641         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 642                            I40E_GLV_GOTCL(stat_idx),
 643                            vsi->stat_offsets_loaded,
 644                            &oes->tx_bytes, &es->tx_bytes);
 645         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 646                            I40E_GLV_UPTCL(stat_idx),
 647                            vsi->stat_offsets_loaded,
 648                            &oes->tx_unicast, &es->tx_unicast);
 649         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 650                            I40E_GLV_MPTCL(stat_idx),
 651                            vsi->stat_offsets_loaded,
 652                            &oes->tx_multicast, &es->tx_multicast);
 653         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 654                            I40E_GLV_BPTCL(stat_idx),
 655                            vsi->stat_offsets_loaded,
 656                            &oes->tx_broadcast, &es->tx_broadcast);
 657         vsi->stat_offsets_loaded = true;
 658 }
 659
 660 /**
 661  * i40e_update_veb_stats - Update Switch component statistics
 662  * @veb: the VEB being updated
 663  **/
 664 static void i40e_update_veb_stats(struct i40e_veb *veb)
 665 {
 666         struct i40e_pf *pf = veb->pf;
 667         struct i40e_hw *hw = &pf->hw;
 668         struct i40e_eth_stats *oes;
 669         struct i40e_eth_stats *es;     /* device's eth stats */
 670         struct i40e_veb_tc_stats *veb_oes;
 671         struct i40e_veb_tc_stats *veb_es;
 672         int i, idx = 0;
 673
 674         idx = veb->stats_idx;
 675         es = &veb->stats;
 676         oes = &veb->stats_offsets;
 677         veb_es = &veb->tc_stats;
 678         veb_oes = &veb->tc_stats_offsets;
 679
 680         /* Gather up the stats that the hw collects */
 681         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 682                            veb->stat_offsets_loaded,
 683                            &oes->tx_discards, &es->tx_discards);
 684         if (hw->revision_id > 0)
 685                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 686                                    veb->stat_offsets_loaded,
 687                                    &oes->rx_unknown_protocol,
 688                                    &es->rx_unknown_protocol);
 689         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 690                            veb->stat_offsets_loaded,
 691                            &oes->rx_bytes, &es->rx_bytes);
 692         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 693                            veb->stat_offsets_loaded,
 694                            &oes->rx_unicast, &es->rx_unicast);
 695         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 696                            veb->stat_offsets_loaded,
 697                            &oes->rx_multicast, &es->rx_multicast);
 698         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 699                            veb->stat_offsets_loaded,
 700                            &oes->rx_broadcast, &es->rx_broadcast);
 701
 702         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 703                            veb->stat_offsets_loaded,
 704                            &oes->tx_bytes, &es->tx_bytes);
 705         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 706                            veb->stat_offsets_loaded,
 707                            &oes->tx_unicast, &es->tx_unicast);
 708         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 709                            veb->stat_offsets_loaded,
 710                            &oes->tx_multicast, &es->tx_multicast);
 711         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 712                            veb->stat_offsets_loaded,
 713                            &oes->tx_broadcast, &es->tx_broadcast);
 714         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
 715                 i40e_stat_update48(hw, I40E_GLVEBTC_RPCH(i, idx),
 716                                    I40E_GLVEBTC_RPCL(i, idx),
 717                                    veb->stat_offsets_loaded,
 718                                    &veb_oes->tc_rx_packets[i],
 719                                    &veb_es->tc_rx_packets[i]);
 720                 i40e_stat_update48(hw, I40E_GLVEBTC_RBCH(i, idx),
 721                                    I40E_GLVEBTC_RBCL(i, idx),
 722                                    veb->stat_offsets_loaded,
 723                                    &veb_oes->tc_rx_bytes[i],
 724                                    &veb_es->tc_rx_bytes[i]);
 725                 i40e_stat_update48(hw, I40E_GLVEBTC_TPCH(i, idx),
 726                                    I40E_GLVEBTC_TPCL(i, idx),
 727                                    veb->stat_offsets_loaded,
 728                                    &veb_oes->tc_tx_packets[i],
 729                                    &veb_es->tc_tx_packets[i]);
 730                 i40e_stat_update48(hw, I40E_GLVEBTC_TBCH(i, idx),
 731                                    I40E_GLVEBTC_TBCL(i, idx),
 732                                    veb->stat_offsets_loaded,
 733                                    &veb_oes->tc_tx_bytes[i],
 734                                    &veb_es->tc_tx_bytes[i]);
 735         }
 736         veb->stat_offsets_loaded = true;
 737 }
 738
 739 #ifdef I40E_FCOE
 740 /**
 741  * i40e_update_fcoe_stats - Update FCoE-specific ethernet statistics counters.
 742  * @vsi: the VSI that is capable of doing FCoE
 743  **/
 744 static void i40e_update_fcoe_stats(struct i40e_vsi *vsi)
 745 {
 746         struct i40e_pf *pf = vsi->back;
 747         struct i40e_hw *hw = &pf->hw;
 748         struct i40e_fcoe_stats *ofs;
 749         struct i40e_fcoe_stats *fs;     /* device's eth stats */
 750         int idx;
 751
 752         if (vsi->type != I40E_VSI_FCOE)
 753                 return;
 754
 755         idx = hw->pf_id + I40E_FCOE_PF_STAT_OFFSET;
 756         fs = &vsi->fcoe_stats;
 757         ofs = &vsi->fcoe_stats_offsets;
 758
 759         i40e_stat_update32(hw, I40E_GL_FCOEPRC(idx),
 760                            vsi->fcoe_stat_offsets_loaded,
 761                            &ofs->rx_fcoe_packets, &fs->rx_fcoe_packets);
 762         i40e_stat_update48(hw, I40E_GL_FCOEDWRCH(idx), I40E_GL_FCOEDWRCL(idx),
 763                            vsi->fcoe_stat_offsets_loaded,
 764                            &ofs->rx_fcoe_dwords, &fs->rx_fcoe_dwords);
 765         i40e_stat_update32(hw, I40E_GL_FCOERPDC(idx),
 766                            vsi->fcoe_stat_offsets_loaded,
 767                            &ofs->rx_fcoe_dropped, &fs->rx_fcoe_dropped);
 768         i40e_stat_update32(hw, I40E_GL_FCOEPTC(idx),
 769                            vsi->fcoe_stat_offsets_loaded,
 770                            &ofs->tx_fcoe_packets, &fs->tx_fcoe_packets);
 771         i40e_stat_update48(hw, I40E_GL_FCOEDWTCH(idx), I40E_GL_FCOEDWTCL(idx),
 772                            vsi->fcoe_stat_offsets_loaded,
 773                            &ofs->tx_fcoe_dwords, &fs->tx_fcoe_dwords);
 774         i40e_stat_update32(hw, I40E_GL_FCOECRC(idx),
 775                            vsi->fcoe_stat_offsets_loaded,
 776                            &ofs->fcoe_bad_fccrc, &fs->fcoe_bad_fccrc);
 777         i40e_stat_update32(hw, I40E_GL_FCOELAST(idx),
 778                            vsi->fcoe_stat_offsets_loaded,
 779                            &ofs->fcoe_last_error, &fs->fcoe_last_error);
 780         i40e_stat_update32(hw, I40E_GL_FCOEDDPC(idx),
 781                            vsi->fcoe_stat_offsets_loaded,
 782                            &ofs->fcoe_ddp_count, &fs->fcoe_ddp_count);
 783
 784         vsi->fcoe_stat_offsets_loaded = true;
 785 }
 786
 787 #endif
 788 /**
 789  * i40e_update_vsi_stats - Update the vsi statistics counters.
 790  * @vsi: the VSI to be updated
 791  *
 792  * There are a few instances where we store the same stat in a
 793  * couple of different structs.  This is partly because we have
 794  * the netdev stats that need to be filled out, which is slightly
 795  * different from the "eth_stats" defined by the chip and used in
 796  * VF communications.  We sort it out here.
 797  **/
 798 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 799 {
 800         struct i40e_pf *pf = vsi->back;
 801         struct rtnl_link_stats64 *ons;
 802         struct rtnl_link_stats64 *ns;   /* netdev stats */
 803         struct i40e_eth_stats *oes;
 804         struct i40e_eth_stats *es;     /* device's eth stats */
 805         u32 tx_restart, tx_busy;
 806         u64 tx_lost_interrupt;
 807         struct i40e_ring *p;
 808         u32 rx_page, rx_buf;
 809         u64 bytes, packets;
 810         unsigned int start;
 811         u64 tx_linearize;
 812         u64 tx_force_wb;
 813         u64 rx_p, rx_b;
 814         u64 tx_p, tx_b;
 815         u16 q;
 816
 817         if (test_bit(__I40E_DOWN, &vsi->state) ||
 818             test_bit(__I40E_CONFIG_BUSY, &pf->state))
 819                 return;
 820
 821         ns = i40e_get_vsi_stats_struct(vsi);
 822         ons = &vsi->net_stats_offsets;
 823         es = &vsi->eth_stats;
 824         oes = &vsi->eth_stats_offsets;
 825
 826         /* Gather up the netdev and vsi stats that the driver collects
 827          * on the fly during packet processing
 828          */
 829         rx_b = rx_p = 0;
 830         tx_b = tx_p = 0;
 831         tx_restart = tx_busy = tx_linearize = tx_force_wb = 0;
 832         tx_lost_interrupt = 0;
 833         rx_page = 0;
 834         rx_buf = 0;
 835         rcu_read_lock();
 836         for (q = 0; q < vsi->num_queue_pairs; q++) {
 837                 /* locate Tx ring */
 838                 p = ACCESS_ONCE(vsi->tx_rings[q]);
 839
 840                 do {
 841                         start = u64_stats_fetch_begin_irq(&p->syncp);
 842                         packets = p->stats.packets;
 843                         bytes = p->stats.bytes;
 844                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 845                 tx_b += bytes;
 846                 tx_p += packets;
 847                 tx_restart += p->tx_stats.restart_queue;
 848                 tx_busy += p->tx_stats.tx_busy;
 849                 tx_linearize += p->tx_stats.tx_linearize;
 850                 tx_force_wb += p->tx_stats.tx_force_wb;
 851                 tx_lost_interrupt += p->tx_stats.tx_lost_interrupt;
 852
 853                 /* Rx queue is part of the same block as Tx queue */
 854                 p = &p[1];
 855                 do {
 856                         start = u64_stats_fetch_begin_irq(&p->syncp);
 857                         packets = p->stats.packets;
 858                         bytes = p->stats.bytes;
 859                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 860                 rx_b += bytes;
 861                 rx_p += packets;
 862                 rx_buf += p->rx_stats.alloc_buff_failed;
 863                 rx_page += p->rx_stats.alloc_page_failed;
 864         }
 865         rcu_read_unlock();
 866         vsi->tx_restart = tx_restart;
 867         vsi->tx_busy = tx_busy;
 868         vsi->tx_linearize = tx_linearize;
 869         vsi->tx_force_wb = tx_force_wb;
 870         vsi->tx_lost_interrupt = tx_lost_interrupt;
 871         vsi->rx_page_failed = rx_page;
 872         vsi->rx_buf_failed = rx_buf;
 873
 874         ns->rx_packets = rx_p;
 875         ns->rx_bytes = rx_b;
 876         ns->tx_packets = tx_p;
 877         ns->tx_bytes = tx_b;
 878
 879         /* update netdev stats from eth stats */
 880         i40e_update_eth_stats(vsi);
 881         ons->tx_errors = oes->tx_errors;
 882         ns->tx_errors = es->tx_errors;
 883         ons->multicast = oes->rx_multicast;
 884         ns->multicast = es->rx_multicast;
 885         ons->rx_dropped = oes->rx_discards;
 886         ns->rx_dropped = es->rx_discards;
 887         ons->tx_dropped = oes->tx_discards;
 888         ns->tx_dropped = es->tx_discards;
 889
 890         /* pull in a couple PF stats if this is the main vsi */
 891         if (vsi == pf->vsi[pf->lan_vsi]) {
 892                 ns->rx_crc_errors = pf->stats.crc_errors;
 893                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 894                 ns->rx_length_errors = pf->stats.rx_length_errors;
 895         }
 896 }
 897
 898 /**
 899  * i40e_update_pf_stats - Update the PF statistics counters.
 900  * @pf: the PF to be updated
 901  **/
 902 static void i40e_update_pf_stats(struct i40e_pf *pf)
 903 {
 904         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 905         struct i40e_hw_port_stats *nsd = &pf->stats;
 906         struct i40e_hw *hw = &pf->hw;
 907         u32 val;
 908         int i;
 909
 910         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 911                            I40E_GLPRT_GORCL(hw->port),
 912                            pf->stat_offsets_loaded,
 913                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 914         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 915                            I40E_GLPRT_GOTCL(hw->port),
 916                            pf->stat_offsets_loaded,
 917                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 918         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 919                            pf->stat_offsets_loaded,
 920                            &osd->eth.rx_discards,
 921                            &nsd->eth.rx_discards);
 922         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 923                            I40E_GLPRT_UPRCL(hw->port),
 924                            pf->stat_offsets_loaded,
 925                            &osd->eth.rx_unicast,
 926                            &nsd->eth.rx_unicast);
 927         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 928                            I40E_GLPRT_MPRCL(hw->port),
 929                            pf->stat_offsets_loaded,
 930                            &osd->eth.rx_multicast,
 931                            &nsd->eth.rx_multicast);
 932         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
 933                            I40E_GLPRT_BPRCL(hw->port),
 934                            pf->stat_offsets_loaded,
 935                            &osd->eth.rx_broadcast,
 936                            &nsd->eth.rx_broadcast);
 937         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
 938                            I40E_GLPRT_UPTCL(hw->port),
 939                            pf->stat_offsets_loaded,
 940                            &osd->eth.tx_unicast,
 941                            &nsd->eth.tx_unicast);
 942         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
 943                            I40E_GLPRT_MPTCL(hw->port),
 944                            pf->stat_offsets_loaded,
 945                            &osd->eth.tx_multicast,
 946                            &nsd->eth.tx_multicast);
 947         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
 948                            I40E_GLPRT_BPTCL(hw->port),
 949                            pf->stat_offsets_loaded,
 950                            &osd->eth.tx_broadcast,
 951                            &nsd->eth.tx_broadcast);
 952
 953         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
 954                            pf->stat_offsets_loaded,
 955                            &osd->tx_dropped_link_down,
 956                            &nsd->tx_dropped_link_down);
 957
 958         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
 959                            pf->stat_offsets_loaded,
 960                            &osd->crc_errors, &nsd->crc_errors);
 961
 962         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
 963                            pf->stat_offsets_loaded,
 964                            &osd->illegal_bytes, &nsd->illegal_bytes);
 965
 966         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
 967                            pf->stat_offsets_loaded,
 968                            &osd->mac_local_faults,
 969                            &nsd->mac_local_faults);
 970         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
 971                            pf->stat_offsets_loaded,
 972                            &osd->mac_remote_faults,
 973                            &nsd->mac_remote_faults);
 974
 975         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
 976                            pf->stat_offsets_loaded,
 977                            &osd->rx_length_errors,
 978                            &nsd->rx_length_errors);
 979
 980         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
 981                            pf->stat_offsets_loaded,
 982                            &osd->link_xon_rx, &nsd->link_xon_rx);
 983         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
 984                            pf->stat_offsets_loaded,
 985                            &osd->link_xon_tx, &nsd->link_xon_tx);
 986         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
 987                            pf->stat_offsets_loaded,
 988                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
 989         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
 990                            pf->stat_offsets_loaded,
 991                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
 992
 993         for (i = 0; i < 8; i++) {
 994                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 995                                    pf->stat_offsets_loaded,
 996                                    &osd->priority_xoff_rx[i],
 997                                    &nsd->priority_xoff_rx[i]);
 998                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
 999                                    pf->stat_offsets_loaded,
1000                                    &osd->priority_xon_rx[i],
1001                                    &nsd->priority_xon_rx[i]);
1002                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
1003                                    pf->stat_offsets_loaded,
1004                                    &osd->priority_xon_tx[i],
1005                                    &nsd->priority_xon_tx[i]);
1006                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
1007                                    pf->stat_offsets_loaded,
1008                                    &osd->priority_xoff_tx[i],
1009                                    &nsd->priority_xoff_tx[i]);
1010                 i40e_stat_update32(hw,
1011                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
1012                                    pf->stat_offsets_loaded,
1013                                    &osd->priority_xon_2_xoff[i],
1014                                    &nsd->priority_xon_2_xoff[i]);
1015         }
1016
1017         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
1018                            I40E_GLPRT_PRC64L(hw->port),
1019                            pf->stat_offsets_loaded,
1020                            &osd->rx_size_64, &nsd->rx_size_64);
1021         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
1022                            I40E_GLPRT_PRC127L(hw->port),
1023                            pf->stat_offsets_loaded,
1024                            &osd->rx_size_127, &nsd->rx_size_127);
1025         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
1026                            I40E_GLPRT_PRC255L(hw->port),
1027                            pf->stat_offsets_loaded,
1028                            &osd->rx_size_255, &nsd->rx_size_255);
1029         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
1030                            I40E_GLPRT_PRC511L(hw->port),
1031                            pf->stat_offsets_loaded,
1032                            &osd->rx_size_511, &nsd->rx_size_511);
1033         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
1034                            I40E_GLPRT_PRC1023L(hw->port),
1035                            pf->stat_offsets_loaded,
1036                            &osd->rx_size_1023, &nsd->rx_size_1023);
1037         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
1038                            I40E_GLPRT_PRC1522L(hw->port),
1039                            pf->stat_offsets_loaded,
1040                            &osd->rx_size_1522, &nsd->rx_size_1522);
1041         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
1042                            I40E_GLPRT_PRC9522L(hw->port),
1043                            pf->stat_offsets_loaded,
1044                            &osd->rx_size_big, &nsd->rx_size_big);
1045
1046         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
1047                            I40E_GLPRT_PTC64L(hw->port),
1048                            pf->stat_offsets_loaded,
1049                            &osd->tx_size_64, &nsd->tx_size_64);
1050         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
1051                            I40E_GLPRT_PTC127L(hw->port),
1052                            pf->stat_offsets_loaded,
1053                            &osd->tx_size_127, &nsd->tx_size_127);
1054         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
1055                            I40E_GLPRT_PTC255L(hw->port),
1056                            pf->stat_offsets_loaded,
1057                            &osd->tx_size_255, &nsd->tx_size_255);
1058         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
1059                            I40E_GLPRT_PTC511L(hw->port),
1060                            pf->stat_offsets_loaded,
1061                            &osd->tx_size_511, &nsd->tx_size_511);
1062         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1063                            I40E_GLPRT_PTC1023L(hw->port),
1064                            pf->stat_offsets_loaded,
1065                            &osd->tx_size_1023, &nsd->tx_size_1023);
1066         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1067                            I40E_GLPRT_PTC1522L(hw->port),
1068                            pf->stat_offsets_loaded,
1069                            &osd->tx_size_1522, &nsd->tx_size_1522);
1070         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1071                            I40E_GLPRT_PTC9522L(hw->port),
1072                            pf->stat_offsets_loaded,
1073                            &osd->tx_size_big, &nsd->tx_size_big);
1074
1075         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1076                            pf->stat_offsets_loaded,
1077                            &osd->rx_undersize, &nsd->rx_undersize);
1078         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1079                            pf->stat_offsets_loaded,
1080                            &osd->rx_fragments, &nsd->rx_fragments);
1081         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1082                            pf->stat_offsets_loaded,
1083                            &osd->rx_oversize, &nsd->rx_oversize);
1084         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1085                            pf->stat_offsets_loaded,
1086                            &osd->rx_jabber, &nsd->rx_jabber);
1087
1088         /* FDIR stats */
1089         i40e_stat_update32(hw,
1090                            I40E_GLQF_PCNT(I40E_FD_ATR_STAT_IDX(pf->hw.pf_id)),
1091                            pf->stat_offsets_loaded,
1092                            &osd->fd_atr_match, &nsd->fd_atr_match);
1093         i40e_stat_update32(hw,
1094                            I40E_GLQF_PCNT(I40E_FD_SB_STAT_IDX(pf->hw.pf_id)),
1095                            pf->stat_offsets_loaded,
1096                            &osd->fd_sb_match, &nsd->fd_sb_match);
1097         i40e_stat_update32(hw,
1098                       I40E_GLQF_PCNT(I40E_FD_ATR_TUNNEL_STAT_IDX(pf->hw.pf_id)),
1099                       pf->stat_offsets_loaded,
1100                       &osd->fd_atr_tunnel_match, &nsd->fd_atr_tunnel_match);
1101
1102         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1103         nsd->tx_lpi_status =
1104                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1105                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1106         nsd->rx_lpi_status =
1107                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1108                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1109         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1110                            pf->stat_offsets_loaded,
1111                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1112         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1113                            pf->stat_offsets_loaded,
1114                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1115
1116         if (pf->flags & I40E_FLAG_FD_SB_ENABLED &&
1117             !(pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED))
1118                 nsd->fd_sb_status = true;
1119         else
1120                 nsd->fd_sb_status = false;
1121
1122         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED &&
1123             !(pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
1124                 nsd->fd_atr_status = true;
1125         else
1126                 nsd->fd_atr_status = false;
1127
1128         pf->stat_offsets_loaded = true;
1129 }
1130
1131 /**
1132  * i40e_update_stats - Update the various statistics counters.
1133  * @vsi: the VSI to be updated
1134  *
1135  * Update the various stats for this VSI and its related entities.
1136  **/
1137 void i40e_update_stats(struct i40e_vsi *vsi)
1138 {
1139         struct i40e_pf *pf = vsi->back;
1140
1141         if (vsi == pf->vsi[pf->lan_vsi])
1142                 i40e_update_pf_stats(pf);
1143
1144         i40e_update_vsi_stats(vsi);
1145 #ifdef I40E_FCOE
1146         i40e_update_fcoe_stats(vsi);
1147 #endif
1148 }
1149
1150 /**
1151  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1152  * @vsi: the VSI to be searched
1153  * @macaddr: the MAC address
1154  * @vlan: the vlan
1155  * @is_vf: make sure its a VF filter, else doesn't matter
1156  * @is_netdev: make sure its a netdev filter, else doesn't matter
1157  *
1158  * Returns ptr to the filter object or NULL
1159  **/
1160 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1161                                                 u8 *macaddr, s16 vlan,
1162                                                 bool is_vf, bool is_netdev)
1163 {
1164         struct i40e_mac_filter *f;
1165
1166         if (!vsi || !macaddr)
1167                 return NULL;
1168
1169         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1170                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1171                     (vlan == f->vlan)    &&
1172                     (!is_vf || f->is_vf) &&
1173                     (!is_netdev || f->is_netdev))
1174                         return f;
1175         }
1176         return NULL;
1177 }
1178
1179 /**
1180  * i40e_find_mac - Find a mac addr in the macvlan filters list
1181  * @vsi: the VSI to be searched
1182  * @macaddr: the MAC address we are searching for
1183  * @is_vf: make sure its a VF filter, else doesn't matter
1184  * @is_netdev: make sure its a netdev filter, else doesn't matter
1185  *
1186  * Returns the first filter with the provided MAC address or NULL if
1187  * MAC address was not found
1188  **/
1189 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr,
1190                                       bool is_vf, bool is_netdev)
1191 {
1192         struct i40e_mac_filter *f;
1193
1194         if (!vsi || !macaddr)
1195                 return NULL;
1196
1197         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1198                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1199                     (!is_vf || f->is_vf) &&
1200                     (!is_netdev || f->is_netdev))
1201                         return f;
1202         }
1203         return NULL;
1204 }
1205
1206 /**
1207  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1208  * @vsi: the VSI to be searched
1209  *
1210  * Returns true if VSI is in vlan mode or false otherwise
1211  **/
1212 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1213 {
1214         struct i40e_mac_filter *f;
1215
1216         /* Only -1 for all the filters denotes not in vlan mode
1217          * so we have to go through all the list in order to make sure
1218          */
1219         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1220                 if (f->vlan >= 0 || vsi->info.pvid)
1221                         return true;
1222         }
1223
1224         return false;
1225 }
1226
1227 /**
1228  * i40e_put_mac_in_vlan - Make macvlan filters from macaddrs and vlans
1229  * @vsi: the VSI to be searched
1230  * @macaddr: the mac address to be filtered
1231  * @is_vf: true if it is a VF
1232  * @is_netdev: true if it is a netdev
1233  *
1234  * Goes through all the macvlan filters and adds a
1235  * macvlan filter for each unique vlan that already exists
1236  *
1237  * Returns first filter found on success, else NULL
1238  **/
1239 struct i40e_mac_filter *i40e_put_mac_in_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1240                                              bool is_vf, bool is_netdev)
1241 {
1242         struct i40e_mac_filter *f;
1243
1244         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1245                 if (vsi->info.pvid)
1246                         f->vlan = le16_to_cpu(vsi->info.pvid);
1247                 if (!i40e_find_filter(vsi, macaddr, f->vlan,
1248                                       is_vf, is_netdev)) {
1249                         if (!i40e_add_filter(vsi, macaddr, f->vlan,
1250                                              is_vf, is_netdev))
1251                                 return NULL;
1252                 }
1253         }
1254
1255         return list_first_entry_or_null(&vsi->mac_filter_list,
1256                                         struct i40e_mac_filter, list);
1257 }
1258
1259 /**
1260  * i40e_del_mac_all_vlan - Remove a MAC filter from all VLANS
1261  * @vsi: the VSI to be searched
1262  * @macaddr: the mac address to be removed
1263  * @is_vf: true if it is a VF
1264  * @is_netdev: true if it is a netdev
1265  *
1266  * Removes a given MAC address from a VSI, regardless of VLAN
1267  *
1268  * Returns 0 for success, or error
1269  **/
1270 int i40e_del_mac_all_vlan(struct i40e_vsi *vsi, u8 *macaddr,
1271                           bool is_vf, bool is_netdev)
1272 {
1273         struct i40e_mac_filter *f = NULL;
1274         int changed = 0;
1275
1276         WARN(!spin_is_locked(&vsi->mac_filter_list_lock),
1277              "Missing mac_filter_list_lock\n");
1278         list_for_each_entry(f, &vsi->mac_filter_list, list) {
1279                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1280                     (is_vf == f->is_vf) &&
1281                     (is_netdev == f->is_netdev)) {
1282                         f->counter--;
1283                         f->changed = true;
1284                         changed = 1;
1285                 }
1286         }
1287         if (changed) {
1288                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1289                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1290                 return 0;
1291         }
1292         return -ENOENT;
1293 }
1294
1295 /**
1296  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1297  * @vsi: the PF Main VSI - inappropriate for any other VSI
1298  * @macaddr: the MAC address
1299  *
1300  * Some older firmware configurations set up a default promiscuous VLAN
1301  * filter that needs to be removed.
1302  **/
1303 static int i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1304 {
1305         struct i40e_aqc_remove_macvlan_element_data element;
1306         struct i40e_pf *pf = vsi->back;
1307         i40e_status ret;
1308
1309         /* Only appropriate for the PF main VSI */
1310         if (vsi->type != I40E_VSI_MAIN)
1311                 return -EINVAL;
1312
1313         memset(&element, 0, sizeof(element));
1314         ether_addr_copy(element.mac_addr, macaddr);
1315         element.vlan_tag = 0;
1316         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1317                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1318         ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1319         if (ret)
1320                 return -ENOENT;
1321
1322         return 0;
1323 }
1324
1325 /**
1326  * i40e_add_filter - Add a mac/vlan filter to the VSI
1327  * @vsi: the VSI to be searched
1328  * @macaddr: the MAC address
1329  * @vlan: the vlan
1330  * @is_vf: make sure its a VF filter, else doesn't matter
1331  * @is_netdev: make sure its a netdev filter, else doesn't matter
1332  *
1333  * Returns ptr to the filter object or NULL when no memory available.
1334  *
1335  * NOTE: This function is expected to be called with mac_filter_list_lock
1336  * being held.
1337  **/
1338 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1339                                         u8 *macaddr, s16 vlan,
1340                                         bool is_vf, bool is_netdev)
1341 {
1342         struct i40e_mac_filter *f;
1343
1344         if (!vsi || !macaddr)
1345                 return NULL;
1346
1347         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1348         if (!f) {
1349                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1350                 if (!f)
1351                         goto add_filter_out;
1352
1353                 ether_addr_copy(f->macaddr, macaddr);
1354                 f->vlan = vlan;
1355                 f->changed = true;
1356
1357                 INIT_LIST_HEAD(&f->list);
1358                 list_add_tail(&f->list, &vsi->mac_filter_list);
1359         }
1360
1361         /* increment counter and add a new flag if needed */
1362         if (is_vf) {
1363                 if (!f->is_vf) {
1364                         f->is_vf = true;
1365                         f->counter++;
1366                 }
1367         } else if (is_netdev) {
1368                 if (!f->is_netdev) {
1369                         f->is_netdev = true;
1370                         f->counter++;
1371                 }
1372         } else {
1373                 f->counter++;
1374         }
1375
1376         /* changed tells sync_filters_subtask to
1377          * push the filter down to the firmware
1378          */
1379         if (f->changed) {
1380                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1381                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1382         }
1383
1384 add_filter_out:
1385         return f;
1386 }
1387
1388 /**
1389  * i40e_del_filter - Remove a mac/vlan filter from the VSI
1390  * @vsi: the VSI to be searched
1391  * @macaddr: the MAC address
1392  * @vlan: the vlan
1393  * @is_vf: make sure it's a VF filter, else doesn't matter
1394  * @is_netdev: make sure it's a netdev filter, else doesn't matter
1395  *
1396  * NOTE: This function is expected to be called with mac_filter_list_lock
1397  * being held.
1398  **/
1399 void i40e_del_filter(struct i40e_vsi *vsi,
1400                      u8 *macaddr, s16 vlan,
1401                      bool is_vf, bool is_netdev)
1402 {
1403         struct i40e_mac_filter *f;
1404
1405         if (!vsi || !macaddr)
1406                 return;
1407
1408         f = i40e_find_filter(vsi, macaddr, vlan, is_vf, is_netdev);
1409         if (!f || f->counter == 0)
1410                 return;
1411
1412         if (is_vf) {
1413                 if (f->is_vf) {
1414                         f->is_vf = false;
1415                         f->counter--;
1416                 }
1417         } else if (is_netdev) {
1418                 if (f->is_netdev) {
1419                         f->is_netdev = false;
1420                         f->counter--;
1421                 }
1422         } else {
1423                 /* make sure we don't remove a filter in use by VF or netdev */
1424                 int min_f = 0;
1425
1426                 min_f += (f->is_vf ? 1 : 0);
1427                 min_f += (f->is_netdev ? 1 : 0);
1428
1429                 if (f->counter > min_f)
1430                         f->counter--;
1431         }
1432
1433         /* counter == 0 tells sync_filters_subtask to
1434          * remove the filter from the firmware's list
1435          */
1436         if (f->counter == 0) {
1437                 f->changed = true;
1438                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1439                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1440         }
1441 }
1442
1443 /**
1444  * i40e_set_mac - NDO callback to set mac address
1445  * @netdev: network interface device structure
1446  * @p: pointer to an address structure
1447  *
1448  * Returns 0 on success, negative on failure
1449  **/
1450 #ifdef I40E_FCOE
1451 int i40e_set_mac(struct net_device *netdev, void *p)
1452 #else
1453 static int i40e_set_mac(struct net_device *netdev, void *p)
1454 #endif
1455 {
1456         struct i40e_netdev_priv *np = netdev_priv(netdev);
1457         struct i40e_vsi *vsi = np->vsi;
1458         struct i40e_pf *pf = vsi->back;
1459         struct i40e_hw *hw = &pf->hw;
1460         struct sockaddr *addr = p;
1461         struct i40e_mac_filter *f;
1462
1463         if (!is_valid_ether_addr(addr->sa_data))
1464                 return -EADDRNOTAVAIL;
1465
1466         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1467                 netdev_info(netdev, "already using mac address %pM\n",
1468                             addr->sa_data);
1469                 return 0;
1470         }
1471
1472         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
1473             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
1474                 return -EADDRNOTAVAIL;
1475
1476         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1477                 netdev_info(netdev, "returning to hw mac address %pM\n",
1478                             hw->mac.addr);
1479         else
1480                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1481
1482         if (vsi->type == I40E_VSI_MAIN) {
1483                 i40e_status ret;
1484
1485                 ret = i40e_aq_mac_address_write(&vsi->back->hw,
1486                                                 I40E_AQC_WRITE_TYPE_LAA_WOL,
1487                                                 addr->sa_data, NULL);
1488                 if (ret) {
1489                         netdev_info(netdev,
1490                                     "Addr change for Main VSI failed: %d\n",
1491                                     ret);
1492                         return -EADDRNOTAVAIL;
1493                 }
1494         }
1495
1496         if (ether_addr_equal(netdev->dev_addr, hw->mac.addr)) {
1497                 struct i40e_aqc_remove_macvlan_element_data element;
1498
1499                 memset(&element, 0, sizeof(element));
1500                 ether_addr_copy(element.mac_addr, netdev->dev_addr);
1501                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1502                 i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1503         } else {
1504                 spin_lock_bh(&vsi->mac_filter_list_lock);
1505                 i40e_del_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
1506                                 false, false);
1507                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1508         }
1509
1510         if (ether_addr_equal(addr->sa_data, hw->mac.addr)) {
1511                 struct i40e_aqc_add_macvlan_element_data element;
1512
1513                 memset(&element, 0, sizeof(element));
1514                 ether_addr_copy(element.mac_addr, hw->mac.addr);
1515                 element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
1516                 i40e_aq_add_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1517         } else {
1518                 spin_lock_bh(&vsi->mac_filter_list_lock);
1519                 f = i40e_add_filter(vsi, addr->sa_data, I40E_VLAN_ANY,
1520                                     false, false);
1521                 if (f)
1522                         f->is_laa = true;
1523                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1524         }
1525
1526         ether_addr_copy(netdev->dev_addr, addr->sa_data);
1527
1528         /* schedule our worker thread which will take care of
1529          * applying the new filter changes
1530          */
1531         i40e_service_event_schedule(vsi->back);
1532         return 0;
1533 }
1534
1535 /**
1536  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1537  * @vsi: the VSI being setup
1538  * @ctxt: VSI context structure
1539  * @enabled_tc: Enabled TCs bitmap
1540  * @is_add: True if called before Add VSI
1541  *
1542  * Setup VSI queue mapping for enabled traffic classes.
1543  **/
1544 #ifdef I40E_FCOE
1545 void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1546                               struct i40e_vsi_context *ctxt,
1547                               u8 enabled_tc,
1548                               bool is_add)
1549 #else
1550 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1551                                      struct i40e_vsi_context *ctxt,
1552                                      u8 enabled_tc,
1553                                      bool is_add)
1554 #endif
1555 {
1556         struct i40e_pf *pf = vsi->back;
1557         u16 sections = 0;
1558         u8 netdev_tc = 0;
1559         u16 numtc = 0;
1560         u16 qcount;
1561         u8 offset;
1562         u16 qmap;
1563         int i;
1564         u16 num_tc_qps = 0;
1565
1566         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1567         offset = 0;
1568
1569         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1570                 /* Find numtc from enabled TC bitmap */
1571                 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1572                         if (enabled_tc & BIT(i)) /* TC is enabled */
1573                                 numtc++;
1574                 }
1575                 if (!numtc) {
1576                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1577                         numtc = 1;
1578                 }
1579         } else {
1580                 /* At least TC0 is enabled in case of non-DCB case */
1581                 numtc = 1;
1582         }
1583
1584         vsi->tc_config.numtc = numtc;
1585         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1586         /* Number of queues per enabled TC */
1587         /* In MFP case we can have a much lower count of MSIx
1588          * vectors available and so we need to lower the used
1589          * q count.
1590          */
1591         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1592                 qcount = min_t(int, vsi->alloc_queue_pairs, pf->num_lan_msix);
1593         else
1594                 qcount = vsi->alloc_queue_pairs;
1595         num_tc_qps = qcount / numtc;
1596         num_tc_qps = min_t(int, num_tc_qps, i40e_pf_get_max_q_per_tc(pf));
1597
1598         /* Setup queue offset/count for all TCs for given VSI */
1599         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1600                 /* See if the given TC is enabled for the given VSI */
1601                 if (vsi->tc_config.enabled_tc & BIT(i)) {
1602                         /* TC is enabled */
1603                         int pow, num_qps;
1604
1605                         switch (vsi->type) {
1606                         case I40E_VSI_MAIN:
1607                                 qcount = min_t(int, pf->alloc_rss_size,
1608                                                num_tc_qps);
1609                                 break;
1610 #ifdef I40E_FCOE
1611                         case I40E_VSI_FCOE:
1612                                 qcount = num_tc_qps;
1613                                 break;
1614 #endif
1615                         case I40E_VSI_FDIR:
1616                         case I40E_VSI_SRIOV:
1617                         case I40E_VSI_VMDQ2:
1618                         default:
1619                                 qcount = num_tc_qps;
1620                                 WARN_ON(i != 0);
1621                                 break;
1622                         }
1623                         vsi->tc_config.tc_info[i].qoffset = offset;
1624                         vsi->tc_config.tc_info[i].qcount = qcount;
1625
1626                         /* find the next higher power-of-2 of num queue pairs */
1627                         num_qps = qcount;
1628                         pow = 0;
1629                         while (num_qps && (BIT_ULL(pow) < qcount)) {
1630                                 pow++;
1631                                 num_qps >>= 1;
1632                         }
1633
1634                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1635                         qmap =
1636                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1637                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1638
1639                         offset += qcount;
1640                 } else {
1641                         /* TC is not enabled so set the offset to
1642                          * default queue and allocate one queue
1643                          * for the given TC.
1644                          */
1645                         vsi->tc_config.tc_info[i].qoffset = 0;
1646                         vsi->tc_config.tc_info[i].qcount = 1;
1647                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1648
1649                         qmap = 0;
1650                 }
1651                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1652         }
1653
1654         /* Set actual Tx/Rx queue pairs */
1655         vsi->num_queue_pairs = offset;
1656         if ((vsi->type == I40E_VSI_MAIN) && (numtc == 1)) {
1657                 if (vsi->req_queue_pairs > 0)
1658                         vsi->num_queue_pairs = vsi->req_queue_pairs;
1659                 else if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1660                         vsi->num_queue_pairs = pf->num_lan_msix;
1661         }
1662
1663         /* Scheduler section valid can only be set for ADD VSI */
1664         if (is_add) {
1665                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1666
1667                 ctxt->info.up_enable_bits = enabled_tc;
1668         }
1669         if (vsi->type == I40E_VSI_SRIOV) {
1670                 ctxt->info.mapping_flags |=
1671                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1672                 for (i = 0; i < vsi->num_queue_pairs; i++)
1673                         ctxt->info.queue_mapping[i] =
1674                                                cpu_to_le16(vsi->base_queue + i);
1675         } else {
1676                 ctxt->info.mapping_flags |=
1677                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1678                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1679         }
1680         ctxt->info.valid_sections |= cpu_to_le16(sections);
1681 }
1682
1683 /**
1684  * i40e_set_rx_mode - NDO callback to set the netdev filters
1685  * @netdev: network interface device structure
1686  **/
1687 #ifdef I40E_FCOE
1688 void i40e_set_rx_mode(struct net_device *netdev)
1689 #else
1690 static void i40e_set_rx_mode(struct net_device *netdev)
1691 #endif
1692 {
1693         struct i40e_netdev_priv *np = netdev_priv(netdev);
1694         struct i40e_mac_filter *f, *ftmp;
1695         struct i40e_vsi *vsi = np->vsi;
1696         struct netdev_hw_addr *uca;
1697         struct netdev_hw_addr *mca;
1698         struct netdev_hw_addr *ha;
1699
1700         spin_lock_bh(&vsi->mac_filter_list_lock);
1701
1702         /* add addr if not already in the filter list */
1703         netdev_for_each_uc_addr(uca, netdev) {
1704                 if (!i40e_find_mac(vsi, uca->addr, false, true)) {
1705                         if (i40e_is_vsi_in_vlan(vsi))
1706                                 i40e_put_mac_in_vlan(vsi, uca->addr,
1707                                                      false, true);
1708                         else
1709                                 i40e_add_filter(vsi, uca->addr, I40E_VLAN_ANY,
1710                                                 false, true);
1711                 }
1712         }
1713
1714         netdev_for_each_mc_addr(mca, netdev) {
1715                 if (!i40e_find_mac(vsi, mca->addr, false, true)) {
1716                         if (i40e_is_vsi_in_vlan(vsi))
1717                                 i40e_put_mac_in_vlan(vsi, mca->addr,
1718                                                      false, true);
1719                         else
1720                                 i40e_add_filter(vsi, mca->addr, I40E_VLAN_ANY,
1721                                                 false, true);
1722                 }
1723         }
1724
1725         /* remove filter if not in netdev list */
1726         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1727
1728                 if (!f->is_netdev)
1729                         continue;
1730
1731                 netdev_for_each_mc_addr(mca, netdev)
1732                         if (ether_addr_equal(mca->addr, f->macaddr))
1733                                 goto bottom_of_search_loop;
1734
1735                 netdev_for_each_uc_addr(uca, netdev)
1736                         if (ether_addr_equal(uca->addr, f->macaddr))
1737                                 goto bottom_of_search_loop;
1738
1739                 for_each_dev_addr(netdev, ha)
1740                         if (ether_addr_equal(ha->addr, f->macaddr))
1741                                 goto bottom_of_search_loop;
1742
1743                 /* f->macaddr wasn't found in uc, mc, or ha list so delete it */
1744                 i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY, false, true);
1745
1746 bottom_of_search_loop:
1747                 continue;
1748         }
1749         spin_unlock_bh(&vsi->mac_filter_list_lock);
1750
1751         /* check for other flag changes */
1752         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1753                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1754                 vsi->back->flags |= I40E_FLAG_FILTER_SYNC;
1755         }
1756
1757         /* schedule our worker thread which will take care of
1758          * applying the new filter changes
1759          */
1760         i40e_service_event_schedule(vsi->back);
1761 }
1762
1763 /**
1764  * i40e_mac_filter_entry_clone - Clones a MAC filter entry
1765  * @src: source MAC filter entry to be clones
1766  *
1767  * Returns the pointer to newly cloned MAC filter entry or NULL
1768  * in case of error
1769  **/
1770 static struct i40e_mac_filter *i40e_mac_filter_entry_clone(
1771                                         struct i40e_mac_filter *src)
1772 {
1773         struct i40e_mac_filter *f;
1774
1775         f = kzalloc(sizeof(*f), GFP_ATOMIC);
1776         if (!f)
1777                 return NULL;
1778         *f = *src;
1779
1780         INIT_LIST_HEAD(&f->list);
1781
1782         return f;
1783 }
1784
1785 /**
1786  * i40e_undo_del_filter_entries - Undo the changes made to MAC filter entries
1787  * @vsi: pointer to vsi struct
1788  * @from: Pointer to list which contains MAC filter entries - changes to
1789  *        those entries needs to be undone.
1790  *
1791  * MAC filter entries from list were slated to be removed from device.
1792  **/
1793 static void i40e_undo_del_filter_entries(struct i40e_vsi *vsi,
1794                                          struct list_head *from)
1795 {
1796         struct i40e_mac_filter *f, *ftmp;
1797
1798         list_for_each_entry_safe(f, ftmp, from, list) {
1799                 f->changed = true;
1800                 /* Move the element back into MAC filter list*/
1801                 list_move_tail(&f->list, &vsi->mac_filter_list);
1802         }
1803 }
1804
1805 /**
1806  * i40e_undo_add_filter_entries - Undo the changes made to MAC filter entries
1807  * @vsi: pointer to vsi struct
1808  *
1809  * MAC filter entries from list were slated to be added from device.
1810  **/
1811 static void i40e_undo_add_filter_entries(struct i40e_vsi *vsi)
1812 {
1813         struct i40e_mac_filter *f, *ftmp;
1814
1815         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1816                 if (!f->changed && f->counter)
1817                         f->changed = true;
1818         }
1819 }
1820
1821 /**
1822  * i40e_cleanup_add_list - Deletes the element from add list and release
1823  *                      memory
1824  * @add_list: Pointer to list which contains MAC filter entries
1825  **/
1826 static void i40e_cleanup_add_list(struct list_head *add_list)
1827 {
1828         struct i40e_mac_filter *f, *ftmp;
1829
1830         list_for_each_entry_safe(f, ftmp, add_list, list) {
1831                 list_del(&f->list);
1832                 kfree(f);
1833         }
1834 }
1835
1836 /**
1837  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
1838  * @vsi: ptr to the VSI
1839  *
1840  * Push any outstanding VSI filter changes through the AdminQ.
1841  *
1842  * Returns 0 or error value
1843  **/
1844 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
1845 {
1846         struct list_head tmp_del_list, tmp_add_list;
1847         struct i40e_mac_filter *f, *ftmp, *fclone;
1848         bool promisc_forced_on = false;
1849         bool add_happened = false;
1850         int filter_list_len = 0;
1851         u32 changed_flags = 0;
1852         i40e_status aq_ret = 0;
1853         bool err_cond = false;
1854         int retval = 0;
1855         struct i40e_pf *pf;
1856         int num_add = 0;
1857         int num_del = 0;
1858         int aq_err = 0;
1859         u16 cmd_flags;
1860
1861         /* empty array typed pointers, kcalloc later */
1862         struct i40e_aqc_add_macvlan_element_data *add_list;
1863         struct i40e_aqc_remove_macvlan_element_data *del_list;
1864
1865         while (test_and_set_bit(__I40E_CONFIG_BUSY, &vsi->state))
1866                 usleep_range(1000, 2000);
1867         pf = vsi->back;
1868
1869         if (vsi->netdev) {
1870                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
1871                 vsi->current_netdev_flags = vsi->netdev->flags;
1872         }
1873
1874         INIT_LIST_HEAD(&tmp_del_list);
1875         INIT_LIST_HEAD(&tmp_add_list);
1876
1877         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
1878                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
1879
1880                 spin_lock_bh(&vsi->mac_filter_list_lock);
1881                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1882                         if (!f->changed)
1883                                 continue;
1884
1885                         if (f->counter != 0)
1886                                 continue;
1887                         f->changed = false;
1888
1889                         /* Move the element into temporary del_list */
1890                         list_move_tail(&f->list, &tmp_del_list);
1891                 }
1892
1893                 list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
1894                         if (!f->changed)
1895                                 continue;
1896
1897                         if (f->counter == 0)
1898                                 continue;
1899                         f->changed = false;
1900
1901                         /* Clone MAC filter entry and add into temporary list */
1902                         fclone = i40e_mac_filter_entry_clone(f);
1903                         if (!fclone) {
1904                                 err_cond = true;
1905                                 break;
1906                         }
1907                         list_add_tail(&fclone->list, &tmp_add_list);
1908                 }
1909
1910                 /* if failed to clone MAC filter entry - undo */
1911                 if (err_cond) {
1912                         i40e_undo_del_filter_entries(vsi, &tmp_del_list);
1913                         i40e_undo_add_filter_entries(vsi);
1914                 }
1915                 spin_unlock_bh(&vsi->mac_filter_list_lock);
1916
1917                 if (err_cond) {
1918                         i40e_cleanup_add_list(&tmp_add_list);
1919                         retval = -ENOMEM;
1920                         goto out;
1921                 }
1922         }
1923
1924         /* Now process 'del_list' outside the lock */
1925         if (!list_empty(&tmp_del_list)) {
1926                 int del_list_size;
1927
1928                 filter_list_len = pf->hw.aq.asq_buf_size /
1929                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1930                 del_list_size = filter_list_len *
1931                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
1932                 del_list = kzalloc(del_list_size, GFP_ATOMIC);
1933                 if (!del_list) {
1934                         i40e_cleanup_add_list(&tmp_add_list);
1935
1936                         /* Undo VSI's MAC filter entry element updates */
1937                         spin_lock_bh(&vsi->mac_filter_list_lock);
1938                         i40e_undo_del_filter_entries(vsi, &tmp_del_list);
1939                         i40e_undo_add_filter_entries(vsi);
1940                         spin_unlock_bh(&vsi->mac_filter_list_lock);
1941                         retval = -ENOMEM;
1942                         goto out;
1943                 }
1944
1945                 list_for_each_entry_safe(f, ftmp, &tmp_del_list, list) {
1946                         cmd_flags = 0;
1947
1948                         /* add to delete list */
1949                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
1950                         del_list[num_del].vlan_tag =
1951                                 cpu_to_le16((u16)(f->vlan ==
1952                                             I40E_VLAN_ANY ? 0 : f->vlan));
1953
1954                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1955                         del_list[num_del].flags = cmd_flags;
1956                         num_del++;
1957
1958                         /* flush a full buffer */
1959                         if (num_del == filter_list_len) {
1960                                 aq_ret = i40e_aq_remove_macvlan(&pf->hw,
1961                                                                 vsi->seid,
1962                                                                 del_list,
1963                                                                 num_del,
1964                                                                 NULL);
1965                                 aq_err = pf->hw.aq.asq_last_status;
1966                                 num_del = 0;
1967                                 memset(del_list, 0, del_list_size);
1968
1969                                 if (aq_ret && aq_err != I40E_AQ_RC_ENOENT) {
1970                                         retval = -EIO;
1971                                         dev_err(&pf->pdev->dev,
1972                                                 "ignoring delete macvlan error, err %s, aq_err %s while flushing a full buffer\n",
1973                                                 i40e_stat_str(&pf->hw, aq_ret),
1974                                                 i40e_aq_str(&pf->hw, aq_err));
1975                                 }
1976                         }
1977                         /* Release memory for MAC filter entries which were
1978                          * synced up with HW.
1979                          */
1980                         list_del(&f->list);
1981                         kfree(f);
1982                 }
1983
1984                 if (num_del) {
1985                         aq_ret = i40e_aq_remove_macvlan(&pf->hw, vsi->seid,
1986                                                         del_list, num_del,
1987                                                         NULL);
1988                         aq_err = pf->hw.aq.asq_last_status;
1989                         num_del = 0;
1990
1991                         if (aq_ret && aq_err != I40E_AQ_RC_ENOENT)
1992                                 dev_info(&pf->pdev->dev,
1993                                          "ignoring delete macvlan error, err %s aq_err %s\n",
1994                                          i40e_stat_str(&pf->hw, aq_ret),
1995                                          i40e_aq_str(&pf->hw, aq_err));
1996                 }
1997
1998                 kfree(del_list);
1999                 del_list = NULL;
2000         }
2001
2002         if (!list_empty(&tmp_add_list)) {
2003                 int add_list_size;
2004
2005                 /* do all the adds now */
2006                 filter_list_len = pf->hw.aq.asq_buf_size /
2007                                sizeof(struct i40e_aqc_add_macvlan_element_data),
2008                 add_list_size = filter_list_len *
2009                                sizeof(struct i40e_aqc_add_macvlan_element_data);
2010                 add_list = kzalloc(add_list_size, GFP_ATOMIC);
2011                 if (!add_list) {
2012                         /* Purge element from temporary lists */
2013                         i40e_cleanup_add_list(&tmp_add_list);
2014
2015                         /* Undo add filter entries from VSI MAC filter list */
2016                         spin_lock_bh(&vsi->mac_filter_list_lock);
2017                         i40e_undo_add_filter_entries(vsi);
2018                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2019                         retval = -ENOMEM;
2020                         goto out;
2021                 }
2022
2023                 list_for_each_entry_safe(f, ftmp, &tmp_add_list, list) {
2024
2025                         add_happened = true;
2026                         cmd_flags = 0;
2027
2028                         /* add to add array */
2029                         ether_addr_copy(add_list[num_add].mac_addr, f->macaddr);
2030                         add_list[num_add].vlan_tag =
2031                                 cpu_to_le16(
2032                                  (u16)(f->vlan == I40E_VLAN_ANY ? 0 : f->vlan));
2033                         add_list[num_add].queue_number = 0;
2034
2035                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
2036                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
2037                         num_add++;
2038
2039                         /* flush a full buffer */
2040                         if (num_add == filter_list_len) {
2041                                 aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
2042                                                              add_list, num_add,
2043                                                              NULL);
2044                                 aq_err = pf->hw.aq.asq_last_status;
2045                                 num_add = 0;
2046
2047                                 if (aq_ret)
2048                                         break;
2049                                 memset(add_list, 0, add_list_size);
2050                         }
2051                         /* Entries from tmp_add_list were cloned from MAC
2052                          * filter list, hence clean those cloned entries
2053                          */
2054                         list_del(&f->list);
2055                         kfree(f);
2056                 }
2057
2058                 if (num_add) {
2059                         aq_ret = i40e_aq_add_macvlan(&pf->hw, vsi->seid,
2060                                                      add_list, num_add, NULL);
2061                         aq_err = pf->hw.aq.asq_last_status;
2062                         num_add = 0;
2063                 }
2064                 kfree(add_list);
2065                 add_list = NULL;
2066
2067                 if (add_happened && aq_ret && aq_err != I40E_AQ_RC_EINVAL) {
2068                         retval = i40e_aq_rc_to_posix(aq_ret, aq_err);
2069                         dev_info(&pf->pdev->dev,
2070                                  "add filter failed, err %s aq_err %s\n",
2071                                  i40e_stat_str(&pf->hw, aq_ret),
2072                                  i40e_aq_str(&pf->hw, aq_err));
2073                         if ((pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOSPC) &&
2074                             !test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2075                                       &vsi->state)) {
2076                                 promisc_forced_on = true;
2077                                 set_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2078                                         &vsi->state);
2079                                 dev_info(&pf->pdev->dev, "promiscuous mode forced on\n");
2080                         }
2081                 }
2082         }
2083
2084         /* if the VF is not trusted do not do promisc */
2085         if ((vsi->type == I40E_VSI_SRIOV) && !pf->vf[vsi->vf_id].trusted) {
2086                 clear_bit(__I40E_FILTER_OVERFLOW_PROMISC, &vsi->state);
2087                 goto out;
2088         }
2089
2090         /* check for changes in promiscuous modes */
2091         if (changed_flags & IFF_ALLMULTI) {
2092                 bool cur_multipromisc;
2093
2094                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
2095                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
2096                                                                vsi->seid,
2097                                                                cur_multipromisc,
2098                                                                NULL);
2099                 if (aq_ret) {
2100                         retval = i40e_aq_rc_to_posix(aq_ret,
2101                                                      pf->hw.aq.asq_last_status);
2102                         dev_info(&pf->pdev->dev,
2103                                  "set multi promisc failed, err %s aq_err %s\n",
2104                                  i40e_stat_str(&pf->hw, aq_ret),
2105                                  i40e_aq_str(&pf->hw,
2106                                              pf->hw.aq.asq_last_status));
2107                 }
2108         }
2109         if ((changed_flags & IFF_PROMISC) || promisc_forced_on) {
2110                 bool cur_promisc;
2111
2112                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
2113                                test_bit(__I40E_FILTER_OVERFLOW_PROMISC,
2114                                         &vsi->state));
2115                 if ((vsi->type == I40E_VSI_MAIN) &&
2116                     (pf->lan_veb != I40E_NO_VEB) &&
2117                     !(pf->flags & I40E_FLAG_MFP_ENABLED)) {
2118                         /* set defport ON for Main VSI instead of true promisc
2119                          * this way we will get all unicast/multicast and VLAN
2120                          * promisc behavior but will not get VF or VMDq traffic
2121                          * replicated on the Main VSI.
2122                          */
2123                         if (pf->cur_promisc != cur_promisc) {
2124                                 pf->cur_promisc = cur_promisc;
2125                                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
2126                         }
2127                 } else {
2128                         aq_ret = i40e_aq_set_vsi_unicast_promiscuous(
2129                                                           &vsi->back->hw,
2130                                                           vsi->seid,
2131                                                           cur_promisc, NULL,
2132                                                           true);
2133                         if (aq_ret) {
2134                                 retval =
2135                                 i40e_aq_rc_to_posix(aq_ret,
2136                                                     pf->hw.aq.asq_last_status);
2137                                 dev_info(&pf->pdev->dev,
2138                                          "set unicast promisc failed, err %d, aq_err %d\n",
2139                                          aq_ret, pf->hw.aq.asq_last_status);
2140                         }
2141                         aq_ret = i40e_aq_set_vsi_multicast_promiscuous(
2142                                                           &vsi->back->hw,
2143                                                           vsi->seid,
2144                                                           cur_promisc, NULL);
2145                         if (aq_ret) {
2146                                 retval =
2147                                 i40e_aq_rc_to_posix(aq_ret,
2148                                                     pf->hw.aq.asq_last_status);
2149                                 dev_info(&pf->pdev->dev,
2150                                          "set multicast promisc failed, err %d, aq_err %d\n",
2151                                          aq_ret, pf->hw.aq.asq_last_status);
2152                         }
2153                 }
2154                 aq_ret = i40e_aq_set_vsi_broadcast(&vsi->back->hw,
2155                                                    vsi->seid,
2156                                                    cur_promisc, NULL);
2157                 if (aq_ret) {
2158                         retval = i40e_aq_rc_to_posix(aq_ret,
2159                                                      pf->hw.aq.asq_last_status);
2160                         dev_info(&pf->pdev->dev,
2161                                  "set brdcast promisc failed, err %s, aq_err %s\n",
2162                                  i40e_stat_str(&pf->hw, aq_ret),
2163                                  i40e_aq_str(&pf->hw,
2164                                              pf->hw.aq.asq_last_status));
2165                 }
2166         }
2167 out:
2168         /* if something went wrong then set the changed flag so we try again */
2169         if (retval)
2170                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
2171
2172         clear_bit(__I40E_CONFIG_BUSY, &vsi->state);
2173         return retval;
2174 }
2175
2176 /**
2177  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
2178  * @pf: board private structure
2179  **/
2180 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
2181 {
2182         int v;
2183
2184         if (!pf || !(pf->flags & I40E_FLAG_FILTER_SYNC))
2185                 return;
2186         pf->flags &= ~I40E_FLAG_FILTER_SYNC;
2187
2188         for (v = 0; v < pf->num_alloc_vsi; v++) {
2189                 if (pf->vsi[v] &&
2190                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED)) {
2191                         int ret = i40e_sync_vsi_filters(pf->vsi[v]);
2192
2193                         if (ret) {
2194                                 /* come back and try again later */
2195                                 pf->flags |= I40E_FLAG_FILTER_SYNC;
2196                                 break;
2197                         }
2198                 }
2199         }
2200 }
2201
2202 /**
2203  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
2204  * @netdev: network interface device structure
2205  * @new_mtu: new value for maximum frame size
2206  *
2207  * Returns 0 on success, negative on failure
2208  **/
2209 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
2210 {
2211         struct i40e_netdev_priv *np = netdev_priv(netdev);
2212         int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
2213         struct i40e_vsi *vsi = np->vsi;
2214
2215         /* MTU < 68 is an error and causes problems on some kernels */
2216         if ((new_mtu < 68) || (max_frame > I40E_MAX_RXBUFFER))
2217                 return -EINVAL;
2218
2219         netdev_info(netdev, "changing MTU from %d to %d\n",
2220                     netdev->mtu, new_mtu);
2221         netdev->mtu = new_mtu;
2222         if (netif_running(netdev))
2223                 i40e_vsi_reinit_locked(vsi);
2224         i40e_notify_client_of_l2_param_changes(vsi);
2225         return 0;
2226 }
2227
2228 /**
2229  * i40e_ioctl - Access the hwtstamp interface
2230  * @netdev: network interface device structure
2231  * @ifr: interface request data
2232  * @cmd: ioctl command
2233  **/
2234 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2235 {
2236         struct i40e_netdev_priv *np = netdev_priv(netdev);
2237         struct i40e_pf *pf = np->vsi->back;
2238
2239         switch (cmd) {
2240         case SIOCGHWTSTAMP:
2241                 return i40e_ptp_get_ts_config(pf, ifr);
2242         case SIOCSHWTSTAMP:
2243                 return i40e_ptp_set_ts_config(pf, ifr);
2244         default:
2245                 return -EOPNOTSUPP;
2246         }
2247 }
2248
2249 /**
2250  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
2251  * @vsi: the vsi being adjusted
2252  **/
2253 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
2254 {
2255         struct i40e_vsi_context ctxt;
2256         i40e_status ret;
2257
2258         if ((vsi->info.valid_sections &
2259              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2260             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
2261                 return;  /* already enabled */
2262
2263         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2264         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2265                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
2266
2267         ctxt.seid = vsi->seid;
2268         ctxt.info = vsi->info;
2269         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2270         if (ret) {
2271                 dev_info(&vsi->back->pdev->dev,
2272                          "update vlan stripping failed, err %s aq_err %s\n",
2273                          i40e_stat_str(&vsi->back->hw, ret),
2274                          i40e_aq_str(&vsi->back->hw,
2275                                      vsi->back->hw.aq.asq_last_status));
2276         }
2277 }
2278
2279 /**
2280  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
2281  * @vsi: the vsi being adjusted
2282  **/
2283 void i40e_vlan_stripping_disable(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_EMOD_MASK) ==
2291              I40E_AQ_VSI_PVLAN_EMOD_MASK))
2292                 return;  /* already disabled */
2293
2294         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2295         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2296                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
2297
2298         ctxt.seid = vsi->seid;
2299         ctxt.info = vsi->info;
2300         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2301         if (ret) {
2302                 dev_info(&vsi->back->pdev->dev,
2303                          "update vlan stripping failed, err %s aq_err %s\n",
2304                          i40e_stat_str(&vsi->back->hw, ret),
2305                          i40e_aq_str(&vsi->back->hw,
2306                                      vsi->back->hw.aq.asq_last_status));
2307         }
2308 }
2309
2310 /**
2311  * i40e_vlan_rx_register - Setup or shutdown vlan offload
2312  * @netdev: network interface to be adjusted
2313  * @features: netdev features to test if VLAN offload is enabled or not
2314  **/
2315 static void i40e_vlan_rx_register(struct net_device *netdev, u32 features)
2316 {
2317         struct i40e_netdev_priv *np = netdev_priv(netdev);
2318         struct i40e_vsi *vsi = np->vsi;
2319
2320         if (features & NETIF_F_HW_VLAN_CTAG_RX)
2321                 i40e_vlan_stripping_enable(vsi);
2322         else
2323                 i40e_vlan_stripping_disable(vsi);
2324 }
2325
2326 /**
2327  * i40e_vsi_add_vlan - Add vsi membership for given vlan
2328  * @vsi: the vsi being configured
2329  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2330  **/
2331 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid)
2332 {
2333         struct i40e_mac_filter *f, *add_f;
2334         bool is_netdev, is_vf;
2335
2336         is_vf = (vsi->type == I40E_VSI_SRIOV);
2337         is_netdev = !!(vsi->netdev);
2338
2339         /* Locked once because all functions invoked below iterates list*/
2340         spin_lock_bh(&vsi->mac_filter_list_lock);
2341
2342         if (is_netdev) {
2343                 add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, vid,
2344                                         is_vf, is_netdev);
2345                 if (!add_f) {
2346                         dev_info(&vsi->back->pdev->dev,
2347                                  "Could not add vlan filter %d for %pM\n",
2348                                  vid, vsi->netdev->dev_addr);
2349                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2350                         return -ENOMEM;
2351                 }
2352         }
2353
2354         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2355                 add_f = i40e_add_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2356                 if (!add_f) {
2357                         dev_info(&vsi->back->pdev->dev,
2358                                  "Could not add vlan filter %d for %pM\n",
2359                                  vid, f->macaddr);
2360                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2361                         return -ENOMEM;
2362                 }
2363         }
2364
2365         /* Now if we add a vlan tag, make sure to check if it is the first
2366          * tag (i.e. a "tag" -1 does exist) and if so replace the -1 "tag"
2367          * with 0, so we now accept untagged and specified tagged traffic
2368          * (and not any taged and untagged)
2369          */
2370         if (vid > 0) {
2371                 if (is_netdev && i40e_find_filter(vsi, vsi->netdev->dev_addr,
2372                                                   I40E_VLAN_ANY,
2373                                                   is_vf, is_netdev)) {
2374                         i40e_del_filter(vsi, vsi->netdev->dev_addr,
2375                                         I40E_VLAN_ANY, is_vf, is_netdev);
2376                         add_f = i40e_add_filter(vsi, vsi->netdev->dev_addr, 0,
2377                                                 is_vf, is_netdev);
2378                         if (!add_f) {
2379                                 dev_info(&vsi->back->pdev->dev,
2380                                          "Could not add filter 0 for %pM\n",
2381                                          vsi->netdev->dev_addr);
2382                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2383                                 return -ENOMEM;
2384                         }
2385                 }
2386         }
2387
2388         /* Do not assume that I40E_VLAN_ANY should be reset to VLAN 0 */
2389         if (vid > 0 && !vsi->info.pvid) {
2390                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2391                         if (!i40e_find_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2392                                               is_vf, is_netdev))
2393                                 continue;
2394                         i40e_del_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2395                                         is_vf, is_netdev);
2396                         add_f = i40e_add_filter(vsi, f->macaddr,
2397                                                 0, is_vf, is_netdev);
2398                         if (!add_f) {
2399                                 dev_info(&vsi->back->pdev->dev,
2400                                          "Could not add filter 0 for %pM\n",
2401                                         f->macaddr);
2402                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2403                                 return -ENOMEM;
2404                         }
2405                 }
2406         }
2407
2408         spin_unlock_bh(&vsi->mac_filter_list_lock);
2409
2410         /* schedule our worker thread which will take care of
2411          * applying the new filter changes
2412          */
2413         i40e_service_event_schedule(vsi->back);
2414         return 0;
2415 }
2416
2417 /**
2418  * i40e_vsi_kill_vlan - Remove vsi membership for given vlan
2419  * @vsi: the vsi being configured
2420  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2421  *
2422  * Return: 0 on success or negative otherwise
2423  **/
2424 int i40e_vsi_kill_vlan(struct i40e_vsi *vsi, s16 vid)
2425 {
2426         struct net_device *netdev = vsi->netdev;
2427         struct i40e_mac_filter *f, *add_f;
2428         bool is_vf, is_netdev;
2429         int filter_count = 0;
2430
2431         is_vf = (vsi->type == I40E_VSI_SRIOV);
2432         is_netdev = !!(netdev);
2433
2434         /* Locked once because all functions invoked below iterates list */
2435         spin_lock_bh(&vsi->mac_filter_list_lock);
2436
2437         if (is_netdev)
2438                 i40e_del_filter(vsi, netdev->dev_addr, vid, is_vf, is_netdev);
2439
2440         list_for_each_entry(f, &vsi->mac_filter_list, list)
2441                 i40e_del_filter(vsi, f->macaddr, vid, is_vf, is_netdev);
2442
2443         /* go through all the filters for this VSI and if there is only
2444          * vid == 0 it means there are no other filters, so vid 0 must
2445          * be replaced with -1. This signifies that we should from now
2446          * on accept any traffic (with any tag present, or untagged)
2447          */
2448         list_for_each_entry(f, &vsi->mac_filter_list, list) {
2449                 if (is_netdev) {
2450                         if (f->vlan &&
2451                             ether_addr_equal(netdev->dev_addr, f->macaddr))
2452                                 filter_count++;
2453                 }
2454
2455                 if (f->vlan)
2456                         filter_count++;
2457         }
2458
2459         if (!filter_count && is_netdev) {
2460                 i40e_del_filter(vsi, netdev->dev_addr, 0, is_vf, is_netdev);
2461                 f = i40e_add_filter(vsi, netdev->dev_addr, I40E_VLAN_ANY,
2462                                     is_vf, is_netdev);
2463                 if (!f) {
2464                         dev_info(&vsi->back->pdev->dev,
2465                                  "Could not add filter %d for %pM\n",
2466                                  I40E_VLAN_ANY, netdev->dev_addr);
2467                         spin_unlock_bh(&vsi->mac_filter_list_lock);
2468                         return -ENOMEM;
2469                 }
2470         }
2471
2472         if (!filter_count) {
2473                 list_for_each_entry(f, &vsi->mac_filter_list, list) {
2474                         i40e_del_filter(vsi, f->macaddr, 0, is_vf, is_netdev);
2475                         add_f = i40e_add_filter(vsi, f->macaddr, I40E_VLAN_ANY,
2476                                                 is_vf, is_netdev);
2477                         if (!add_f) {
2478                                 dev_info(&vsi->back->pdev->dev,
2479                                          "Could not add filter %d for %pM\n",
2480                                          I40E_VLAN_ANY, f->macaddr);
2481                                 spin_unlock_bh(&vsi->mac_filter_list_lock);
2482                                 return -ENOMEM;
2483                         }
2484                 }
2485         }
2486
2487         spin_unlock_bh(&vsi->mac_filter_list_lock);
2488
2489         /* schedule our worker thread which will take care of
2490          * applying the new filter changes
2491          */
2492         i40e_service_event_schedule(vsi->back);
2493         return 0;
2494 }
2495
2496 /**
2497  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2498  * @netdev: network interface to be adjusted
2499  * @vid: vlan id to be added
2500  *
2501  * net_device_ops implementation for adding vlan ids
2502  **/
2503 #ifdef I40E_FCOE
2504 int i40e_vlan_rx_add_vid(struct net_device *netdev,
2505                          __always_unused __be16 proto, u16 vid)
2506 #else
2507 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2508                                 __always_unused __be16 proto, u16 vid)
2509 #endif
2510 {
2511         struct i40e_netdev_priv *np = netdev_priv(netdev);
2512         struct i40e_vsi *vsi = np->vsi;
2513         int ret = 0;
2514
2515         if (vid > 4095)
2516                 return -EINVAL;
2517
2518         netdev_info(netdev, "adding %pM vid=%d\n", netdev->dev_addr, vid);
2519
2520         /* If the network stack called us with vid = 0 then
2521          * it is asking to receive priority tagged packets with
2522          * vlan id 0.  Our HW receives them by default when configured
2523          * to receive untagged packets so there is no need to add an
2524          * extra filter for vlan 0 tagged packets.
2525          */
2526         if (vid)
2527                 ret = i40e_vsi_add_vlan(vsi, vid);
2528
2529         if (!ret && (vid < VLAN_N_VID))
2530                 set_bit(vid, vsi->active_vlans);
2531
2532         return ret;
2533 }
2534
2535 /**
2536  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2537  * @netdev: network interface to be adjusted
2538  * @vid: vlan id to be removed
2539  *
2540  * net_device_ops implementation for removing vlan ids
2541  **/
2542 #ifdef I40E_FCOE
2543 int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2544                           __always_unused __be16 proto, u16 vid)
2545 #else
2546 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2547                                  __always_unused __be16 proto, u16 vid)
2548 #endif
2549 {
2550         struct i40e_netdev_priv *np = netdev_priv(netdev);
2551         struct i40e_vsi *vsi = np->vsi;
2552
2553         netdev_info(netdev, "removing %pM vid=%d\n", netdev->dev_addr, vid);
2554
2555         /* return code is ignored as there is nothing a user
2556          * can do about failure to remove and a log message was
2557          * already printed from the other function
2558          */
2559         i40e_vsi_kill_vlan(vsi, vid);
2560
2561         clear_bit(vid, vsi->active_vlans);
2562
2563         return 0;
2564 }
2565
2566 /**
2567  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2568  * @vsi: the vsi being brought back up
2569  **/
2570 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2571 {
2572         u16 vid;
2573
2574         if (!vsi->netdev)
2575                 return;
2576
2577         i40e_vlan_rx_register(vsi->netdev, vsi->netdev->features);
2578
2579         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2580                 i40e_vlan_rx_add_vid(vsi->netdev, htons(ETH_P_8021Q),
2581                                      vid);
2582 }
2583
2584 /**
2585  * i40e_vsi_add_pvid - Add pvid for the VSI
2586  * @vsi: the vsi being adjusted
2587  * @vid: the vlan id to set as a PVID
2588  **/
2589 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2590 {
2591         struct i40e_vsi_context ctxt;
2592         i40e_status ret;
2593
2594         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2595         vsi->info.pvid = cpu_to_le16(vid);
2596         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2597                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2598                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2599
2600         ctxt.seid = vsi->seid;
2601         ctxt.info = vsi->info;
2602         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2603         if (ret) {
2604                 dev_info(&vsi->back->pdev->dev,
2605                          "add pvid failed, err %s aq_err %s\n",
2606                          i40e_stat_str(&vsi->back->hw, ret),
2607                          i40e_aq_str(&vsi->back->hw,
2608                                      vsi->back->hw.aq.asq_last_status));
2609                 return -ENOENT;
2610         }
2611
2612         return 0;
2613 }
2614
2615 /**
2616  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
2617  * @vsi: the vsi being adjusted
2618  *
2619  * Just use the vlan_rx_register() service to put it back to normal
2620  **/
2621 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
2622 {
2623         i40e_vlan_stripping_disable(vsi);
2624
2625         vsi->info.pvid = 0;
2626 }
2627
2628 /**
2629  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
2630  * @vsi: ptr to the VSI
2631  *
2632  * If this function returns with an error, then it's possible one or
2633  * more of the rings is populated (while the rest are not).  It is the
2634  * callers duty to clean those orphaned rings.
2635  *
2636  * Return 0 on success, negative on failure
2637  **/
2638 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
2639 {
2640         int i, err = 0;
2641
2642         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2643                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
2644
2645         return err;
2646 }
2647
2648 /**
2649  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
2650  * @vsi: ptr to the VSI
2651  *
2652  * Free VSI's transmit software resources
2653  **/
2654 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
2655 {
2656         int i;
2657
2658         if (!vsi->tx_rings)
2659                 return;
2660
2661         for (i = 0; i < vsi->num_queue_pairs; i++)
2662                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
2663                         i40e_free_tx_resources(vsi->tx_rings[i]);
2664 }
2665
2666 /**
2667  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
2668  * @vsi: ptr to the VSI
2669  *
2670  * If this function returns with an error, then it's possible one or
2671  * more of the rings is populated (while the rest are not).  It is the
2672  * callers duty to clean those orphaned rings.
2673  *
2674  * Return 0 on success, negative on failure
2675  **/
2676 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
2677 {
2678         int i, err = 0;
2679
2680         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2681                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
2682 #ifdef I40E_FCOE
2683         i40e_fcoe_setup_ddp_resources(vsi);
2684 #endif
2685         return err;
2686 }
2687
2688 /**
2689  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
2690  * @vsi: ptr to the VSI
2691  *
2692  * Free all receive software resources
2693  **/
2694 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
2695 {
2696         int i;
2697
2698         if (!vsi->rx_rings)
2699                 return;
2700
2701         for (i = 0; i < vsi->num_queue_pairs; i++)
2702                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
2703                         i40e_free_rx_resources(vsi->rx_rings[i]);
2704 #ifdef I40E_FCOE
2705         i40e_fcoe_free_ddp_resources(vsi);
2706 #endif
2707 }
2708
2709 /**
2710  * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
2711  * @ring: The Tx ring to configure
2712  *
2713  * This enables/disables XPS for a given Tx descriptor ring
2714  * based on the TCs enabled for the VSI that ring belongs to.
2715  **/
2716 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
2717 {
2718         struct i40e_vsi *vsi = ring->vsi;
2719         cpumask_var_t mask;
2720
2721         if (!ring->q_vector || !ring->netdev)
2722                 return;
2723
2724         /* Single TC mode enable XPS */
2725         if (vsi->tc_config.numtc <= 1) {
2726                 if (!test_and_set_bit(__I40E_TX_XPS_INIT_DONE, &ring->state))
2727                         netif_set_xps_queue(ring->netdev,
2728                                             &ring->q_vector->affinity_mask,
2729                                             ring->queue_index);
2730         } else if (alloc_cpumask_var(&mask, GFP_KERNEL)) {
2731                 /* Disable XPS to allow selection based on TC */
2732                 bitmap_zero(cpumask_bits(mask), nr_cpumask_bits);
2733                 netif_set_xps_queue(ring->netdev, mask, ring->queue_index);
2734                 free_cpumask_var(mask);
2735         }
2736
2737         /* schedule our worker thread which will take care of
2738          * applying the new filter changes
2739          */
2740         i40e_service_event_schedule(vsi->back);
2741 }
2742
2743 /**
2744  * i40e_configure_tx_ring - Configure a transmit ring context and rest
2745  * @ring: The Tx ring to configure
2746  *
2747  * Configure the Tx descriptor ring in the HMC context.
2748  **/
2749 static int i40e_configure_tx_ring(struct i40e_ring *ring)
2750 {
2751         struct i40e_vsi *vsi = ring->vsi;
2752         u16 pf_q = vsi->base_queue + ring->queue_index;
2753         struct i40e_hw *hw = &vsi->back->hw;
2754         struct i40e_hmc_obj_txq tx_ctx;
2755         i40e_status err = 0;
2756         u32 qtx_ctl = 0;
2757
2758         /* some ATR related tx ring init */
2759         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
2760                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
2761                 ring->atr_count = 0;
2762         } else {
2763                 ring->atr_sample_rate = 0;
2764         }
2765
2766         /* configure XPS */
2767         i40e_config_xps_tx_ring(ring);
2768
2769         /* clear the context structure first */
2770         memset(&tx_ctx, 0, sizeof(tx_ctx));
2771
2772         tx_ctx.new_context = 1;
2773         tx_ctx.base = (ring->dma / 128);
2774         tx_ctx.qlen = ring->count;
2775         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
2776                                                I40E_FLAG_FD_ATR_ENABLED));
2777 #ifdef I40E_FCOE
2778         tx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2779 #endif
2780         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
2781         /* FDIR VSI tx ring can still use RS bit and writebacks */
2782         if (vsi->type != I40E_VSI_FDIR)
2783                 tx_ctx.head_wb_ena = 1;
2784         tx_ctx.head_wb_addr = ring->dma +
2785                               (ring->count * sizeof(struct i40e_tx_desc));
2786
2787         /* As part of VSI creation/update, FW allocates certain
2788          * Tx arbitration queue sets for each TC enabled for
2789          * the VSI. The FW returns the handles to these queue
2790          * sets as part of the response buffer to Add VSI,
2791          * Update VSI, etc. AQ commands. It is expected that
2792          * these queue set handles be associated with the Tx
2793          * queues by the driver as part of the TX queue context
2794          * initialization. This has to be done regardless of
2795          * DCB as by default everything is mapped to TC0.
2796          */
2797         tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
2798         tx_ctx.rdylist_act = 0;
2799
2800         /* clear the context in the HMC */
2801         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
2802         if (err) {
2803                 dev_info(&vsi->back->pdev->dev,
2804                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
2805                          ring->queue_index, pf_q, err);
2806                 return -ENOMEM;
2807         }
2808
2809         /* set the context in the HMC */
2810         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
2811         if (err) {
2812                 dev_info(&vsi->back->pdev->dev,
2813                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
2814                          ring->queue_index, pf_q, err);
2815                 return -ENOMEM;
2816         }
2817
2818         /* Now associate this queue with this PCI function */
2819         if (vsi->type == I40E_VSI_VMDQ2) {
2820                 qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
2821                 qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
2822                            I40E_QTX_CTL_VFVM_INDX_MASK;
2823         } else {
2824                 qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
2825         }
2826
2827         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
2828                     I40E_QTX_CTL_PF_INDX_MASK);
2829         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
2830         i40e_flush(hw);
2831
2832         /* cache tail off for easier writes later */
2833         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
2834
2835         return 0;
2836 }
2837
2838 /**
2839  * i40e_configure_rx_ring - Configure a receive ring context
2840  * @ring: The Rx ring to configure
2841  *
2842  * Configure the Rx descriptor ring in the HMC context.
2843  **/
2844 static int i40e_configure_rx_ring(struct i40e_ring *ring)
2845 {
2846         struct i40e_vsi *vsi = ring->vsi;
2847         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
2848         u16 pf_q = vsi->base_queue + ring->queue_index;
2849         struct i40e_hw *hw = &vsi->back->hw;
2850         struct i40e_hmc_obj_rxq rx_ctx;
2851         i40e_status err = 0;
2852
2853         ring->state = 0;
2854
2855         /* clear the context structure first */
2856         memset(&rx_ctx, 0, sizeof(rx_ctx));
2857
2858         ring->rx_buf_len = vsi->rx_buf_len;
2859
2860         rx_ctx.dbuff = ring->rx_buf_len >> I40E_RXQ_CTX_DBUFF_SHIFT;
2861
2862         rx_ctx.base = (ring->dma / 128);
2863         rx_ctx.qlen = ring->count;
2864
2865         /* use 32 byte descriptors */
2866         rx_ctx.dsize = 1;
2867
2868         /* descriptor type is always zero
2869          * rx_ctx.dtype = 0;
2870          */
2871         rx_ctx.hsplit_0 = 0;
2872
2873         rx_ctx.rxmax = min_t(u16, vsi->max_frame, chain_len * ring->rx_buf_len);
2874         if (hw->revision_id == 0)
2875                 rx_ctx.lrxqthresh = 0;
2876         else
2877                 rx_ctx.lrxqthresh = 2;
2878         rx_ctx.crcstrip = 1;
2879         rx_ctx.l2tsel = 1;
2880         /* this controls whether VLAN is stripped from inner headers */
2881         rx_ctx.showiv = 0;
2882 #ifdef I40E_FCOE
2883         rx_ctx.fc_ena = (vsi->type == I40E_VSI_FCOE);
2884 #endif
2885         /* set the prefena field to 1 because the manual says to */
2886         rx_ctx.prefena = 1;
2887
2888         /* clear the context in the HMC */
2889         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
2890         if (err) {
2891                 dev_info(&vsi->back->pdev->dev,
2892                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2893                          ring->queue_index, pf_q, err);
2894                 return -ENOMEM;
2895         }
2896
2897         /* set the context in the HMC */
2898         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
2899         if (err) {
2900                 dev_info(&vsi->back->pdev->dev,
2901                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
2902                          ring->queue_index, pf_q, err);
2903                 return -ENOMEM;
2904         }
2905
2906         /* cache tail for quicker writes, and clear the reg before use */
2907         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
2908         writel(0, ring->tail);
2909
2910         i40e_alloc_rx_buffers(ring, I40E_DESC_UNUSED(ring));
2911
2912         return 0;
2913 }
2914
2915 /**
2916  * i40e_vsi_configure_tx - Configure the VSI for Tx
2917  * @vsi: VSI structure describing this set of rings and resources
2918  *
2919  * Configure the Tx VSI for operation.
2920  **/
2921 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
2922 {
2923         int err = 0;
2924         u16 i;
2925
2926         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
2927                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
2928
2929         return err;
2930 }
2931
2932 /**
2933  * i40e_vsi_configure_rx - Configure the VSI for Rx
2934  * @vsi: the VSI being configured
2935  *
2936  * Configure the Rx VSI for operation.
2937  **/
2938 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
2939 {
2940         int err = 0;
2941         u16 i;
2942
2943         if (vsi->netdev && (vsi->netdev->mtu > ETH_DATA_LEN))
2944                 vsi->max_frame = vsi->netdev->mtu + ETH_HLEN
2945                                + ETH_FCS_LEN + VLAN_HLEN;
2946         else
2947                 vsi->max_frame = I40E_RXBUFFER_2048;
2948
2949         vsi->rx_buf_len = I40E_RXBUFFER_2048;
2950
2951 #ifdef I40E_FCOE
2952         /* setup rx buffer for FCoE */
2953         if ((vsi->type == I40E_VSI_FCOE) &&
2954             (vsi->back->flags & I40E_FLAG_FCOE_ENABLED)) {
2955                 vsi->rx_buf_len = I40E_RXBUFFER_3072;
2956                 vsi->max_frame = I40E_RXBUFFER_3072;
2957         }
2958
2959 #endif /* I40E_FCOE */
2960         /* round up for the chip's needs */
2961         vsi->rx_buf_len = ALIGN(vsi->rx_buf_len,
2962                                 BIT_ULL(I40E_RXQ_CTX_DBUFF_SHIFT));
2963
2964         /* set up individual rings */
2965         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
2966                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
2967
2968         return err;
2969 }
2970
2971 /**
2972  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
2973  * @vsi: ptr to the VSI
2974  **/
2975 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
2976 {
2977         struct i40e_ring *tx_ring, *rx_ring;
2978         u16 qoffset, qcount;
2979         int i, n;
2980
2981         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
2982                 /* Reset the TC information */
2983                 for (i = 0; i < vsi->num_queue_pairs; i++) {
2984                         rx_ring = vsi->rx_rings[i];
2985                         tx_ring = vsi->tx_rings[i];
2986                         rx_ring->dcb_tc = 0;
2987                         tx_ring->dcb_tc = 0;
2988                 }
2989         }
2990
2991         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
2992                 if (!(vsi->tc_config.enabled_tc & BIT_ULL(n)))
2993                         continue;
2994
2995                 qoffset = vsi->tc_config.tc_info[n].qoffset;
2996                 qcount = vsi->tc_config.tc_info[n].qcount;
2997                 for (i = qoffset; i < (qoffset + qcount); i++) {
2998                         rx_ring = vsi->rx_rings[i];
2999                         tx_ring = vsi->tx_rings[i];
3000                         rx_ring->dcb_tc = n;
3001                         tx_ring->dcb_tc = n;
3002                 }
3003         }
3004 }
3005
3006 /**
3007  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
3008  * @vsi: ptr to the VSI
3009  **/
3010 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
3011 {
3012         if (vsi->netdev)
3013                 i40e_set_rx_mode(vsi->netdev);
3014 }
3015
3016 /**
3017  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
3018  * @vsi: Pointer to the targeted VSI
3019  *
3020  * This function replays the hlist on the hw where all the SB Flow Director
3021  * filters were saved.
3022  **/
3023 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
3024 {
3025         struct i40e_fdir_filter *filter;
3026         struct i40e_pf *pf = vsi->back;
3027         struct hlist_node *node;
3028
3029         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
3030                 return;
3031
3032         hlist_for_each_entry_safe(filter, node,
3033                                   &pf->fdir_filter_list, fdir_node) {
3034                 i40e_add_del_fdir(vsi, filter, true);
3035         }
3036 }
3037
3038 /**
3039  * i40e_vsi_configure - Set up the VSI for action
3040  * @vsi: the VSI being configured
3041  **/
3042 static int i40e_vsi_configure(struct i40e_vsi *vsi)
3043 {
3044         int err;
3045
3046         i40e_set_vsi_rx_mode(vsi);
3047         i40e_restore_vlan(vsi);
3048         i40e_vsi_config_dcb_rings(vsi);
3049         err = i40e_vsi_configure_tx(vsi);
3050         if (!err)
3051                 err = i40e_vsi_configure_rx(vsi);
3052
3053         return err;
3054 }
3055
3056 /**
3057  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
3058  * @vsi: the VSI being configured
3059  **/
3060 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
3061 {
3062         struct i40e_pf *pf = vsi->back;
3063         struct i40e_hw *hw = &pf->hw;
3064         u16 vector;
3065         int i, q;
3066         u32 qp;
3067
3068         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
3069          * and PFINT_LNKLSTn registers, e.g.:
3070          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
3071          */
3072         qp = vsi->base_queue;
3073         vector = vsi->base_vector;
3074         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
3075                 struct i40e_q_vector *q_vector = vsi->q_vectors[i];
3076
3077                 q_vector->itr_countdown = ITR_COUNTDOWN_START;
3078                 q_vector->rx.itr = ITR_TO_REG(vsi->rx_rings[i]->rx_itr_setting);
3079                 q_vector->rx.latency_range = I40E_LOW_LATENCY;
3080                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
3081                      q_vector->rx.itr);
3082                 q_vector->tx.itr = ITR_TO_REG(vsi->tx_rings[i]->tx_itr_setting);
3083                 q_vector->tx.latency_range = I40E_LOW_LATENCY;
3084                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
3085                      q_vector->tx.itr);
3086                 wr32(hw, I40E_PFINT_RATEN(vector - 1),
3087                      INTRL_USEC_TO_REG(vsi->int_rate_limit));
3088
3089                 /* Linked list for the queuepairs assigned to this vector */
3090                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
3091                 for (q = 0; q < q_vector->num_ringpairs; q++) {
3092                         u32 val;
3093
3094                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
3095                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
3096                               (vector      << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
3097                               (qp          << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
3098                               (I40E_QUEUE_TYPE_TX
3099                                       << I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
3100
3101                         wr32(hw, I40E_QINT_RQCTL(qp), val);
3102
3103                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
3104                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)  |
3105                               (vector      << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
3106                               ((qp+1)      << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT)|
3107                               (I40E_QUEUE_TYPE_RX
3108                                       << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3109
3110                         /* Terminate the linked list */
3111                         if (q == (q_vector->num_ringpairs - 1))
3112                                 val |= (I40E_QUEUE_END_OF_LIST
3113                                            << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3114
3115                         wr32(hw, I40E_QINT_TQCTL(qp), val);
3116                         qp++;
3117                 }
3118         }
3119
3120         i40e_flush(hw);
3121 }
3122
3123 /**
3124  * i40e_enable_misc_int_causes - enable the non-queue interrupts
3125  * @hw: ptr to the hardware info
3126  **/
3127 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
3128 {
3129         struct i40e_hw *hw = &pf->hw;
3130         u32 val;
3131
3132         /* clear things first */
3133         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
3134         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
3135
3136         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
3137               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
3138               I40E_PFINT_ICR0_ENA_GRST_MASK          |
3139               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
3140               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
3141               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
3142               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
3143               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3144
3145         if (pf->flags & I40E_FLAG_IWARP_ENABLED)
3146                 val |= I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3147
3148         if (pf->flags & I40E_FLAG_PTP)
3149                 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3150
3151         wr32(hw, I40E_PFINT_ICR0_ENA, val);
3152
3153         /* SW_ITR_IDX = 0, but don't change INTENA */
3154         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
3155                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
3156
3157         /* OTHER_ITR_IDX = 0 */
3158         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
3159 }
3160
3161 /**
3162  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
3163  * @vsi: the VSI being configured
3164  **/
3165 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
3166 {
3167         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3168         struct i40e_pf *pf = vsi->back;
3169         struct i40e_hw *hw = &pf->hw;
3170         u32 val;
3171
3172         /* set the ITR configuration */
3173         q_vector->itr_countdown = ITR_COUNTDOWN_START;
3174         q_vector->rx.itr = ITR_TO_REG(vsi->rx_rings[0]->rx_itr_setting);
3175         q_vector->rx.latency_range = I40E_LOW_LATENCY;
3176         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.itr);
3177         q_vector->tx.itr = ITR_TO_REG(vsi->tx_rings[0]->tx_itr_setting);
3178         q_vector->tx.latency_range = I40E_LOW_LATENCY;
3179         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.itr);
3180
3181         i40e_enable_misc_int_causes(pf);
3182
3183         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
3184         wr32(hw, I40E_PFINT_LNKLST0, 0);
3185
3186         /* Associate the queue pair to the vector and enable the queue int */
3187         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                  |
3188               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
3189               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3190
3191         wr32(hw, I40E_QINT_RQCTL(0), val);
3192
3193         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
3194               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3195               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3196
3197         wr32(hw, I40E_QINT_TQCTL(0), val);
3198         i40e_flush(hw);
3199 }
3200
3201 /**
3202  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
3203  * @pf: board private structure
3204  **/
3205 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
3206 {
3207         struct i40e_hw *hw = &pf->hw;
3208
3209         wr32(hw, I40E_PFINT_DYN_CTL0,
3210              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
3211         i40e_flush(hw);
3212 }
3213
3214 /**
3215  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
3216  * @pf: board private structure
3217  * @clearpba: true when all pending interrupt events should be cleared
3218  **/
3219 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf, bool clearpba)
3220 {
3221         struct i40e_hw *hw = &pf->hw;
3222         u32 val;
3223
3224         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
3225               (clearpba ? I40E_PFINT_DYN_CTL0_CLEARPBA_MASK : 0) |
3226               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
3227
3228         wr32(hw, I40E_PFINT_DYN_CTL0, val);
3229         i40e_flush(hw);
3230 }
3231
3232 /**
3233  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
3234  * @irq: interrupt number
3235  * @data: pointer to a q_vector
3236  **/
3237 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
3238 {
3239         struct i40e_q_vector *q_vector = data;
3240
3241         if (!q_vector->tx.ring && !q_vector->rx.ring)
3242                 return IRQ_HANDLED;
3243
3244         napi_schedule_irqoff(&q_vector->napi);
3245
3246         return IRQ_HANDLED;
3247 }
3248
3249 /**
3250  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
3251  * @vsi: the VSI being configured
3252  * @basename: name for the vector
3253  *
3254  * Allocates MSI-X vectors and requests interrupts from the kernel.
3255  **/
3256 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
3257 {
3258         int q_vectors = vsi->num_q_vectors;
3259         struct i40e_pf *pf = vsi->back;
3260         int base = vsi->base_vector;
3261         int rx_int_idx = 0;
3262         int tx_int_idx = 0;
3263         int vector, err;
3264
3265         for (vector = 0; vector < q_vectors; vector++) {
3266                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
3267
3268                 if (q_vector->tx.ring && q_vector->rx.ring) {
3269                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3270                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
3271                         tx_int_idx++;
3272                 } else if (q_vector->rx.ring) {
3273                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3274                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
3275                 } else if (q_vector->tx.ring) {
3276                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3277                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
3278                 } else {
3279                         /* skip this unused q_vector */
3280                         continue;
3281                 }
3282                 err = request_irq(pf->msix_entries[base + vector].vector,
3283                                   vsi->irq_handler,
3284                                   0,
3285                                   q_vector->name,
3286                                   q_vector);
3287                 if (err) {
3288                         dev_info(&pf->pdev->dev,
3289                                  "MSIX request_irq failed, error: %d\n", err);
3290                         goto free_queue_irqs;
3291                 }
3292                 /* assign the mask for this irq */
3293                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3294                                       &q_vector->affinity_mask);
3295         }
3296
3297         vsi->irqs_ready = true;
3298         return 0;
3299
3300 free_queue_irqs:
3301         while (vector) {
3302                 vector--;
3303                 irq_set_affinity_hint(pf->msix_entries[base + vector].vector,
3304                                       NULL);
3305                 free_irq(pf->msix_entries[base + vector].vector,
3306                          &(vsi->q_vectors[vector]));
3307         }
3308         return err;
3309 }
3310
3311 /**
3312  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3313  * @vsi: the VSI being un-configured
3314  **/
3315 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3316 {
3317         struct i40e_pf *pf = vsi->back;
3318         struct i40e_hw *hw = &pf->hw;
3319         int base = vsi->base_vector;
3320         int i;
3321
3322         for (i = 0; i < vsi->num_queue_pairs; i++) {
3323                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), 0);
3324                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), 0);
3325         }
3326
3327         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3328                 for (i = vsi->base_vector;
3329                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3330                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3331
3332                 i40e_flush(hw);
3333                 for (i = 0; i < vsi->num_q_vectors; i++)
3334                         synchronize_irq(pf->msix_entries[i + base].vector);
3335         } else {
3336                 /* Legacy and MSI mode - this stops all interrupt handling */
3337                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3338                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3339                 i40e_flush(hw);
3340                 synchronize_irq(pf->pdev->irq);
3341         }
3342 }
3343
3344 /**
3345  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3346  * @vsi: the VSI being configured
3347  **/
3348 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3349 {
3350         struct i40e_pf *pf = vsi->back;
3351         int i;
3352
3353         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3354                 for (i = 0; i < vsi->num_q_vectors; i++)
3355                         i40e_irq_dynamic_enable(vsi, i);
3356         } else {
3357                 i40e_irq_dynamic_enable_icr0(pf, true);
3358         }
3359
3360         i40e_flush(&pf->hw);
3361         return 0;
3362 }
3363
3364 /**
3365  * i40e_stop_misc_vector - Stop the vector that handles non-queue events
3366  * @pf: board private structure
3367  **/
3368 static void i40e_stop_misc_vector(struct i40e_pf *pf)
3369 {
3370         /* Disable ICR 0 */
3371         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3372         i40e_flush(&pf->hw);
3373 }
3374
3375 /**
3376  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3377  * @irq: interrupt number
3378  * @data: pointer to a q_vector
3379  *
3380  * This is the handler used for all MSI/Legacy interrupts, and deals
3381  * with both queue and non-queue interrupts.  This is also used in
3382  * MSIX mode to handle the non-queue interrupts.
3383  **/
3384 static irqreturn_t i40e_intr(int irq, void *data)
3385 {
3386         struct i40e_pf *pf = (struct i40e_pf *)data;
3387         struct i40e_hw *hw = &pf->hw;
3388         irqreturn_t ret = IRQ_NONE;
3389         u32 icr0, icr0_remaining;
3390         u32 val, ena_mask;
3391
3392         icr0 = rd32(hw, I40E_PFINT_ICR0);
3393         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3394
3395         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3396         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3397                 goto enable_intr;
3398
3399         /* if interrupt but no bits showing, must be SWINT */
3400         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3401             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3402                 pf->sw_int_count++;
3403
3404         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
3405             (ena_mask & I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK)) {
3406                 ena_mask &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3407                 icr0 &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3408                 dev_info(&pf->pdev->dev, "cleared PE_CRITERR\n");
3409         }
3410
3411         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3412         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3413                 struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
3414                 struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3415
3416                 /* We do not have a way to disarm Queue causes while leaving
3417                  * interrupt enabled for all other causes, ideally
3418                  * interrupt should be disabled while we are in NAPI but
3419                  * this is not a performance path and napi_schedule()
3420                  * can deal with rescheduling.
3421                  */
3422                 if (!test_bit(__I40E_DOWN, &pf->state))
3423                         napi_schedule_irqoff(&q_vector->napi);
3424         }
3425
3426         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3427                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3428                 set_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
3429                 i40e_debug(&pf->hw, I40E_DEBUG_NVM, "AdminQ event\n");
3430         }
3431
3432         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
3433                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
3434                 set_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
3435         }
3436
3437         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
3438                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
3439                 set_bit(__I40E_VFLR_EVENT_PENDING, &pf->state);
3440         }
3441
3442         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
3443                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
3444                         set_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
3445                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
3446                 val = rd32(hw, I40E_GLGEN_RSTAT);
3447                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
3448                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
3449                 if (val == I40E_RESET_CORER) {
3450                         pf->corer_count++;
3451                 } else if (val == I40E_RESET_GLOBR) {
3452                         pf->globr_count++;
3453                 } else if (val == I40E_RESET_EMPR) {
3454                         pf->empr_count++;
3455                         set_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state);
3456                 }
3457         }
3458
3459         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
3460                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
3461                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
3462                 dev_info(&pf->pdev->dev, "HMC error info 0x%x, HMC error data 0x%x\n",
3463                          rd32(hw, I40E_PFHMC_ERRORINFO),
3464                          rd32(hw, I40E_PFHMC_ERRORDATA));
3465         }
3466
3467         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
3468                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
3469
3470                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
3471                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3472                         i40e_ptp_tx_hwtstamp(pf);
3473                 }
3474         }
3475
3476         /* If a critical error is pending we have no choice but to reset the
3477          * device.
3478          * Report and mask out any remaining unexpected interrupts.
3479          */
3480         icr0_remaining = icr0 & ena_mask;
3481         if (icr0_remaining) {
3482                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
3483                          icr0_remaining);
3484                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
3485                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
3486                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
3487                         dev_info(&pf->pdev->dev, "device will be reset\n");
3488                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
3489                         i40e_service_event_schedule(pf);
3490                 }
3491                 ena_mask &= ~icr0_remaining;
3492         }
3493         ret = IRQ_HANDLED;
3494
3495 enable_intr:
3496         /* re-enable interrupt causes */
3497         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
3498         if (!test_bit(__I40E_DOWN, &pf->state)) {
3499                 i40e_service_event_schedule(pf);
3500                 i40e_irq_dynamic_enable_icr0(pf, false);
3501         }
3502
3503         return ret;
3504 }
3505
3506 /**
3507  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
3508  * @tx_ring:  tx ring to clean
3509  * @budget:   how many cleans we're allowed
3510  *
3511  * Returns true if there's any budget left (e.g. the clean is finished)
3512  **/
3513 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
3514 {
3515         struct i40e_vsi *vsi = tx_ring->vsi;
3516         u16 i = tx_ring->next_to_clean;
3517         struct i40e_tx_buffer *tx_buf;
3518         struct i40e_tx_desc *tx_desc;
3519
3520         tx_buf = &tx_ring->tx_bi[i];
3521         tx_desc = I40E_TX_DESC(tx_ring, i);
3522         i -= tx_ring->count;
3523
3524         do {
3525                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
3526
3527                 /* if next_to_watch is not set then there is no work pending */
3528                 if (!eop_desc)
3529                         break;
3530
3531                 /* prevent any other reads prior to eop_desc */
3532                 read_barrier_depends();
3533
3534                 /* if the descriptor isn't done, no work yet to do */
3535                 if (!(eop_desc->cmd_type_offset_bsz &
3536                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
3537                         break;
3538
3539                 /* clear next_to_watch to prevent false hangs */
3540                 tx_buf->next_to_watch = NULL;
3541
3542                 tx_desc->buffer_addr = 0;
3543                 tx_desc->cmd_type_offset_bsz = 0;
3544                 /* move past filter desc */
3545                 tx_buf++;
3546                 tx_desc++;
3547                 i++;
3548                 if (unlikely(!i)) {
3549                         i -= tx_ring->count;
3550                         tx_buf = tx_ring->tx_bi;
3551                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3552                 }
3553                 /* unmap skb header data */
3554                 dma_unmap_single(tx_ring->dev,
3555                                  dma_unmap_addr(tx_buf, dma),
3556                                  dma_unmap_len(tx_buf, len),
3557                                  DMA_TO_DEVICE);
3558                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
3559                         kfree(tx_buf->raw_buf);
3560
3561                 tx_buf->raw_buf = NULL;
3562                 tx_buf->tx_flags = 0;
3563                 tx_buf->next_to_watch = NULL;
3564                 dma_unmap_len_set(tx_buf, len, 0);
3565                 tx_desc->buffer_addr = 0;
3566                 tx_desc->cmd_type_offset_bsz = 0;
3567
3568                 /* move us past the eop_desc for start of next FD desc */
3569                 tx_buf++;
3570                 tx_desc++;
3571                 i++;
3572                 if (unlikely(!i)) {
3573                         i -= tx_ring->count;
3574                         tx_buf = tx_ring->tx_bi;
3575                         tx_desc = I40E_TX_DESC(tx_ring, 0);
3576                 }
3577
3578                 /* update budget accounting */
3579                 budget--;
3580         } while (likely(budget));
3581
3582         i += tx_ring->count;
3583         tx_ring->next_to_clean = i;
3584
3585         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED)
3586                 i40e_irq_dynamic_enable(vsi, tx_ring->q_vector->v_idx);
3587
3588         return budget > 0;
3589 }
3590
3591 /**
3592  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
3593  * @irq: interrupt number
3594  * @data: pointer to a q_vector
3595  **/
3596 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
3597 {
3598         struct i40e_q_vector *q_vector = data;
3599         struct i40e_vsi *vsi;
3600
3601         if (!q_vector->tx.ring)
3602                 return IRQ_HANDLED;
3603
3604         vsi = q_vector->tx.ring->vsi;
3605         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
3606
3607         return IRQ_HANDLED;
3608 }
3609
3610 /**
3611  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
3612  * @vsi: the VSI being configured
3613  * @v_idx: vector index
3614  * @qp_idx: queue pair index
3615  **/
3616 static void i40e_map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
3617 {
3618         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
3619         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
3620         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
3621
3622         tx_ring->q_vector = q_vector;
3623         tx_ring->next = q_vector->tx.ring;
3624         q_vector->tx.ring = tx_ring;
3625         q_vector->tx.count++;
3626
3627         rx_ring->q_vector = q_vector;
3628         rx_ring->next = q_vector->rx.ring;
3629         q_vector->rx.ring = rx_ring;
3630         q_vector->rx.count++;
3631 }
3632
3633 /**
3634  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
3635  * @vsi: the VSI being configured
3636  *
3637  * This function maps descriptor rings to the queue-specific vectors
3638  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
3639  * one vector per queue pair, but on a constrained vector budget, we
3640  * group the queue pairs as "efficiently" as possible.
3641  **/
3642 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
3643 {
3644         int qp_remaining = vsi->num_queue_pairs;
3645         int q_vectors = vsi->num_q_vectors;
3646         int num_ringpairs;
3647         int v_start = 0;
3648         int qp_idx = 0;
3649
3650         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
3651          * group them so there are multiple queues per vector.
3652          * It is also important to go through all the vectors available to be
3653          * sure that if we don't use all the vectors, that the remaining vectors
3654          * are cleared. This is especially important when decreasing the
3655          * number of queues in use.
3656          */
3657         for (; v_start < q_vectors; v_start++) {
3658                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
3659
3660                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
3661
3662                 q_vector->num_ringpairs = num_ringpairs;
3663
3664                 q_vector->rx.count = 0;
3665                 q_vector->tx.count = 0;
3666                 q_vector->rx.ring = NULL;
3667                 q_vector->tx.ring = NULL;
3668
3669                 while (num_ringpairs--) {
3670                         i40e_map_vector_to_qp(vsi, v_start, qp_idx);
3671                         qp_idx++;
3672                         qp_remaining--;
3673                 }
3674         }
3675 }
3676
3677 /**
3678  * i40e_vsi_request_irq - Request IRQ from the OS
3679  * @vsi: the VSI being configured
3680  * @basename: name for the vector
3681  **/
3682 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
3683 {
3684         struct i40e_pf *pf = vsi->back;
3685         int err;
3686
3687         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
3688                 err = i40e_vsi_request_irq_msix(vsi, basename);
3689         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
3690                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
3691                                   pf->int_name, pf);
3692         else
3693                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
3694                                   pf->int_name, pf);
3695
3696         if (err)
3697                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
3698
3699         return err;
3700 }
3701
3702 #ifdef CONFIG_NET_POLL_CONTROLLER
3703 /**
3704  * i40e_netpoll - A Polling 'interrupt' handler
3705  * @netdev: network interface device structure
3706  *
3707  * This is used by netconsole to send skbs without having to re-enable
3708  * interrupts.  It's not called while the normal interrupt routine is executing.
3709  **/
3710 #ifdef I40E_FCOE
3711 void i40e_netpoll(struct net_device *netdev)
3712 #else
3713 static void i40e_netpoll(struct net_device *netdev)
3714 #endif
3715 {
3716         struct i40e_netdev_priv *np = netdev_priv(netdev);
3717         struct i40e_vsi *vsi = np->vsi;
3718         struct i40e_pf *pf = vsi->back;
3719         int i;
3720
3721         /* if interface is down do nothing */
3722         if (test_bit(__I40E_DOWN, &vsi->state))
3723                 return;
3724
3725         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3726                 for (i = 0; i < vsi->num_q_vectors; i++)
3727                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
3728         } else {
3729                 i40e_intr(pf->pdev->irq, netdev);
3730         }
3731 }
3732 #endif
3733
3734 /**
3735  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
3736  * @pf: the PF being configured
3737  * @pf_q: the PF queue
3738  * @enable: enable or disable state of the queue
3739  *
3740  * This routine will wait for the given Tx queue of the PF to reach the
3741  * enabled or disabled state.
3742  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3743  * multiple retries; else will return 0 in case of success.
3744  **/
3745 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3746 {
3747         int i;
3748         u32 tx_reg;
3749
3750         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3751                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
3752                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3753                         break;
3754
3755                 usleep_range(10, 20);
3756         }
3757         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3758                 return -ETIMEDOUT;
3759
3760         return 0;
3761 }
3762
3763 /**
3764  * i40e_vsi_control_tx - Start or stop a VSI's rings
3765  * @vsi: the VSI being configured
3766  * @enable: start or stop the rings
3767  **/
3768 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
3769 {
3770         struct i40e_pf *pf = vsi->back;
3771         struct i40e_hw *hw = &pf->hw;
3772         int i, j, pf_q, ret = 0;
3773         u32 tx_reg;
3774
3775         pf_q = vsi->base_queue;
3776         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3777
3778                 /* warn the TX unit of coming changes */
3779                 i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
3780                 if (!enable)
3781                         usleep_range(10, 20);
3782
3783                 for (j = 0; j < 50; j++) {
3784                         tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
3785                         if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
3786                             ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
3787                                 break;
3788                         usleep_range(1000, 2000);
3789                 }
3790                 /* Skip if the queue is already in the requested state */
3791                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
3792                         continue;
3793
3794                 /* turn on/off the queue */
3795                 if (enable) {
3796                         wr32(hw, I40E_QTX_HEAD(pf_q), 0);
3797                         tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
3798                 } else {
3799                         tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
3800                 }
3801
3802                 wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
3803                 /* No waiting for the Tx queue to disable */
3804                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3805                         continue;
3806
3807                 /* wait for the change to finish */
3808                 ret = i40e_pf_txq_wait(pf, pf_q, enable);
3809                 if (ret) {
3810                         dev_info(&pf->pdev->dev,
3811                                  "VSI seid %d Tx ring %d %sable timeout\n",
3812                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3813                         break;
3814                 }
3815         }
3816
3817         if (hw->revision_id == 0)
3818                 mdelay(50);
3819         return ret;
3820 }
3821
3822 /**
3823  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
3824  * @pf: the PF being configured
3825  * @pf_q: the PF queue
3826  * @enable: enable or disable state of the queue
3827  *
3828  * This routine will wait for the given Rx queue of the PF to reach the
3829  * enabled or disabled state.
3830  * Returns -ETIMEDOUT in case of failing to reach the requested state after
3831  * multiple retries; else will return 0 in case of success.
3832  **/
3833 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
3834 {
3835         int i;
3836         u32 rx_reg;
3837
3838         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
3839                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
3840                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3841                         break;
3842
3843                 usleep_range(10, 20);
3844         }
3845         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
3846                 return -ETIMEDOUT;
3847
3848         return 0;
3849 }
3850
3851 /**
3852  * i40e_vsi_control_rx - Start or stop a VSI's rings
3853  * @vsi: the VSI being configured
3854  * @enable: start or stop the rings
3855  **/
3856 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
3857 {
3858         struct i40e_pf *pf = vsi->back;
3859         struct i40e_hw *hw = &pf->hw;
3860         int i, j, pf_q, ret = 0;
3861         u32 rx_reg;
3862
3863         pf_q = vsi->base_queue;
3864         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
3865                 for (j = 0; j < 50; j++) {
3866                         rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
3867                         if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
3868                             ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
3869                                 break;
3870                         usleep_range(1000, 2000);
3871                 }
3872
3873                 /* Skip if the queue is already in the requested state */
3874                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
3875                         continue;
3876
3877                 /* turn on/off the queue */
3878                 if (enable)
3879                         rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
3880                 else
3881                         rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
3882                 wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
3883                 /* No waiting for the Tx queue to disable */
3884                 if (!enable && test_bit(__I40E_PORT_TX_SUSPENDED, &pf->state))
3885                         continue;
3886
3887                 /* wait for the change to finish */
3888                 ret = i40e_pf_rxq_wait(pf, pf_q, enable);
3889                 if (ret) {
3890                         dev_info(&pf->pdev->dev,
3891                                  "VSI seid %d Rx ring %d %sable timeout\n",
3892                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
3893                         break;
3894                 }
3895         }
3896
3897         return ret;
3898 }
3899
3900 /**
3901  * i40e_vsi_control_rings - Start or stop a VSI's rings
3902  * @vsi: the VSI being configured
3903  * @enable: start or stop the rings
3904  **/
3905 int i40e_vsi_control_rings(struct i40e_vsi *vsi, bool request)
3906 {
3907         int ret = 0;
3908
3909         /* do rx first for enable and last for disable */
3910         if (request) {
3911                 ret = i40e_vsi_control_rx(vsi, request);
3912                 if (ret)
3913                         return ret;
3914                 ret = i40e_vsi_control_tx(vsi, request);
3915         } else {
3916                 /* Ignore return value, we need to shutdown whatever we can */
3917                 i40e_vsi_control_tx(vsi, request);
3918                 i40e_vsi_control_rx(vsi, request);
3919         }
3920
3921         return ret;
3922 }
3923
3924 /**
3925  * i40e_vsi_free_irq - Free the irq association with the OS
3926  * @vsi: the VSI being configured
3927  **/
3928 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
3929 {
3930         struct i40e_pf *pf = vsi->back;
3931         struct i40e_hw *hw = &pf->hw;
3932         int base = vsi->base_vector;
3933         u32 val, qp;
3934         int i;
3935
3936         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3937                 if (!vsi->q_vectors)
3938                         return;
3939
3940                 if (!vsi->irqs_ready)
3941                         return;
3942
3943                 vsi->irqs_ready = false;
3944                 for (i = 0; i < vsi->num_q_vectors; i++) {
3945                         u16 vector = i + base;
3946
3947                         /* free only the irqs that were actually requested */
3948                         if (!vsi->q_vectors[i] ||
3949                             !vsi->q_vectors[i]->num_ringpairs)
3950                                 continue;
3951
3952                         /* clear the affinity_mask in the IRQ descriptor */
3953                         irq_set_affinity_hint(pf->msix_entries[vector].vector,
3954                                               NULL);
3955                         free_irq(pf->msix_entries[vector].vector,
3956                                  vsi->q_vectors[i]);
3957
3958                         /* Tear down the interrupt queue link list
3959                          *
3960                          * We know that they come in pairs and always
3961                          * the Rx first, then the Tx.  To clear the
3962                          * link list, stick the EOL value into the
3963                          * next_q field of the registers.
3964                          */
3965                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
3966                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
3967                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3968                         val |= I40E_QUEUE_END_OF_LIST
3969                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
3970                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
3971
3972                         while (qp != I40E_QUEUE_END_OF_LIST) {
3973                                 u32 next;
3974
3975                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
3976
3977                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
3978                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
3979                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
3980                                          I40E_QINT_RQCTL_INTEVENT_MASK);
3981
3982                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
3983                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
3984
3985                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
3986
3987                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
3988
3989                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
3990                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
3991
3992                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
3993                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
3994                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
3995                                          I40E_QINT_TQCTL_INTEVENT_MASK);
3996
3997                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
3998                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
3999
4000                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4001                                 qp = next;
4002                         }
4003                 }
4004         } else {
4005                 free_irq(pf->pdev->irq, pf);
4006
4007                 val = rd32(hw, I40E_PFINT_LNKLST0);
4008                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4009                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4010                 val |= I40E_QUEUE_END_OF_LIST
4011                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
4012                 wr32(hw, I40E_PFINT_LNKLST0, val);
4013
4014                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4015                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4016                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4017                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4018                          I40E_QINT_RQCTL_INTEVENT_MASK);
4019
4020                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4021                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4022
4023                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4024
4025                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4026
4027                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4028                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4029                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4030                          I40E_QINT_TQCTL_INTEVENT_MASK);
4031
4032                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4033                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4034
4035                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4036         }
4037 }
4038
4039 /**
4040  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
4041  * @vsi: the VSI being configured
4042  * @v_idx: Index of vector to be freed
4043  *
4044  * This function frees the memory allocated to the q_vector.  In addition if
4045  * NAPI is enabled it will delete any references to the NAPI struct prior
4046  * to freeing the q_vector.
4047  **/
4048 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
4049 {
4050         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
4051         struct i40e_ring *ring;
4052
4053         if (!q_vector)
4054                 return;
4055
4056         /* disassociate q_vector from rings */
4057         i40e_for_each_ring(ring, q_vector->tx)
4058                 ring->q_vector = NULL;
4059
4060         i40e_for_each_ring(ring, q_vector->rx)
4061                 ring->q_vector = NULL;
4062
4063         /* only VSI w/ an associated netdev is set up w/ NAPI */
4064         if (vsi->netdev)
4065                 netif_napi_del(&q_vector->napi);
4066
4067         vsi->q_vectors[v_idx] = NULL;
4068
4069         kfree_rcu(q_vector, rcu);
4070 }
4071
4072 /**
4073  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
4074  * @vsi: the VSI being un-configured
4075  *
4076  * This frees the memory allocated to the q_vectors and
4077  * deletes references to the NAPI struct.
4078  **/
4079 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
4080 {
4081         int v_idx;
4082
4083         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
4084                 i40e_free_q_vector(vsi, v_idx);
4085 }
4086
4087 /**
4088  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
4089  * @pf: board private structure
4090  **/
4091 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
4092 {
4093         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
4094         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4095                 pci_disable_msix(pf->pdev);
4096                 kfree(pf->msix_entries);
4097                 pf->msix_entries = NULL;
4098                 kfree(pf->irq_pile);
4099                 pf->irq_pile = NULL;
4100         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
4101                 pci_disable_msi(pf->pdev);
4102         }
4103         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
4104 }
4105
4106 /**
4107  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
4108  * @pf: board private structure
4109  *
4110  * We go through and clear interrupt specific resources and reset the structure
4111  * to pre-load conditions
4112  **/
4113 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
4114 {
4115         int i;
4116
4117         i40e_stop_misc_vector(pf);
4118         if (pf->flags & I40E_FLAG_MSIX_ENABLED && pf->msix_entries) {
4119                 synchronize_irq(pf->msix_entries[0].vector);
4120                 free_irq(pf->msix_entries[0].vector, pf);
4121         }
4122
4123         i40e_put_lump(pf->irq_pile, pf->iwarp_base_vector,
4124                       I40E_IWARP_IRQ_PILE_ID);
4125
4126         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
4127         for (i = 0; i < pf->num_alloc_vsi; i++)
4128                 if (pf->vsi[i])
4129                         i40e_vsi_free_q_vectors(pf->vsi[i]);
4130         i40e_reset_interrupt_capability(pf);
4131 }
4132
4133 /**
4134  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
4135  * @vsi: the VSI being configured
4136  **/
4137 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
4138 {
4139         int q_idx;
4140
4141         if (!vsi->netdev)
4142                 return;
4143
4144         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4145                 napi_enable(&vsi->q_vectors[q_idx]->napi);
4146 }
4147
4148 /**
4149  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
4150  * @vsi: the VSI being configured
4151  **/
4152 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
4153 {
4154         int q_idx;
4155
4156         if (!vsi->netdev)
4157                 return;
4158
4159         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++)
4160                 napi_disable(&vsi->q_vectors[q_idx]->napi);
4161 }
4162
4163 /**
4164  * i40e_vsi_close - Shut down a VSI
4165  * @vsi: the vsi to be quelled
4166  **/
4167 static void i40e_vsi_close(struct i40e_vsi *vsi)
4168 {
4169         bool reset = false;
4170
4171         if (!test_and_set_bit(__I40E_DOWN, &vsi->state))
4172                 i40e_down(vsi);
4173         i40e_vsi_free_irq(vsi);
4174         i40e_vsi_free_tx_resources(vsi);
4175         i40e_vsi_free_rx_resources(vsi);
4176         vsi->current_netdev_flags = 0;
4177         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
4178                 reset = true;
4179         i40e_notify_client_of_netdev_close(vsi, reset);
4180 }
4181
4182 /**
4183  * i40e_quiesce_vsi - Pause a given VSI
4184  * @vsi: the VSI being paused
4185  **/
4186 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
4187 {
4188         if (test_bit(__I40E_DOWN, &vsi->state))
4189                 return;
4190
4191         /* No need to disable FCoE VSI when Tx suspended */
4192         if ((test_bit(__I40E_PORT_TX_SUSPENDED, &vsi->back->state)) &&
4193             vsi->type == I40E_VSI_FCOE) {
4194                 dev_dbg(&vsi->back->pdev->dev,
4195                          "VSI seid %d skipping FCoE VSI disable\n", vsi->seid);
4196                 return;
4197         }
4198
4199         set_bit(__I40E_NEEDS_RESTART, &vsi->state);
4200         if (vsi->netdev && netif_running(vsi->netdev))
4201                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
4202         else
4203                 i40e_vsi_close(vsi);
4204 }
4205
4206 /**
4207  * i40e_unquiesce_vsi - Resume a given VSI
4208  * @vsi: the VSI being resumed
4209  **/
4210 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
4211 {
4212         if (!test_bit(__I40E_NEEDS_RESTART, &vsi->state))
4213                 return;
4214
4215         clear_bit(__I40E_NEEDS_RESTART, &vsi->state);
4216         if (vsi->netdev && netif_running(vsi->netdev))
4217                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
4218         else
4219                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
4220 }
4221
4222 /**
4223  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
4224  * @pf: the PF
4225  **/
4226 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
4227 {
4228         int v;
4229
4230         for (v = 0; v < pf->num_alloc_vsi; v++) {
4231                 if (pf->vsi[v])
4232                         i40e_quiesce_vsi(pf->vsi[v]);
4233         }
4234 }
4235
4236 /**
4237  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
4238  * @pf: the PF
4239  **/
4240 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
4241 {
4242         int v;
4243
4244         for (v = 0; v < pf->num_alloc_vsi; v++) {
4245                 if (pf->vsi[v])
4246                         i40e_unquiesce_vsi(pf->vsi[v]);
4247         }
4248 }
4249
4250 #ifdef CONFIG_I40E_DCB
4251 /**
4252  * i40e_vsi_wait_queues_disabled - Wait for VSI's queues to be disabled
4253  * @vsi: the VSI being configured
4254  *
4255  * This function waits for the given VSI's queues to be disabled.
4256  **/
4257 static int i40e_vsi_wait_queues_disabled(struct i40e_vsi *vsi)
4258 {
4259         struct i40e_pf *pf = vsi->back;
4260         int i, pf_q, ret;
4261
4262         pf_q = vsi->base_queue;
4263         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4264                 /* Check and wait for the disable status of the queue */
4265                 ret = i40e_pf_txq_wait(pf, pf_q, false);
4266                 if (ret) {
4267                         dev_info(&pf->pdev->dev,
4268                                  "VSI seid %d Tx ring %d disable timeout\n",
4269                                  vsi->seid, pf_q);
4270                         return ret;
4271                 }
4272         }
4273
4274         pf_q = vsi->base_queue;
4275         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4276                 /* Check and wait for the disable status of the queue */
4277                 ret = i40e_pf_rxq_wait(pf, pf_q, false);
4278                 if (ret) {
4279                         dev_info(&pf->pdev->dev,
4280                                  "VSI seid %d Rx ring %d disable timeout\n",
4281                                  vsi->seid, pf_q);
4282                         return ret;
4283                 }
4284         }
4285
4286         return 0;
4287 }
4288
4289 /**
4290  * i40e_pf_wait_queues_disabled - Wait for all queues of PF VSIs to be disabled
4291  * @pf: the PF
4292  *
4293  * This function waits for the queues to be in disabled state for all the
4294  * VSIs that are managed by this PF.
4295  **/
4296 static int i40e_pf_wait_queues_disabled(struct i40e_pf *pf)
4297 {
4298         int v, ret = 0;
4299
4300         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
4301                 /* No need to wait for FCoE VSI queues */
4302                 if (pf->vsi[v] && pf->vsi[v]->type != I40E_VSI_FCOE) {
4303                         ret = i40e_vsi_wait_queues_disabled(pf->vsi[v]);
4304                         if (ret)
4305                                 break;
4306                 }
4307         }
4308
4309         return ret;
4310 }
4311
4312 #endif
4313
4314 /**
4315  * i40e_detect_recover_hung_queue - Function to detect and recover hung_queue
4316  * @q_idx: TX queue number
4317  * @vsi: Pointer to VSI struct
4318  *
4319  * This function checks specified queue for given VSI. Detects hung condition.
4320  * Sets hung bit since it is two step process. Before next run of service task
4321  * if napi_poll runs, it reset 'hung' bit for respective q_vector. If not,
4322  * hung condition remain unchanged and during subsequent run, this function
4323  * issues SW interrupt to recover from hung condition.
4324  **/
4325 static void i40e_detect_recover_hung_queue(int q_idx, struct i40e_vsi *vsi)
4326 {
4327         struct i40e_ring *tx_ring = NULL;
4328         struct i40e_pf  *pf;
4329         u32 head, val, tx_pending_hw;
4330         int i;
4331
4332         pf = vsi->back;
4333
4334         /* now that we have an index, find the tx_ring struct */
4335         for (i = 0; i < vsi->num_queue_pairs; i++) {
4336                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
4337                         if (q_idx == vsi->tx_rings[i]->queue_index) {
4338                                 tx_ring = vsi->tx_rings[i];
4339                                 break;
4340                         }
4341                 }
4342         }
4343
4344         if (!tx_ring)
4345                 return;
4346
4347         /* Read interrupt register */
4348         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4349                 val = rd32(&pf->hw,
4350                            I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
4351                                                tx_ring->vsi->base_vector - 1));
4352         else
4353                 val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
4354
4355         head = i40e_get_head(tx_ring);
4356
4357         tx_pending_hw = i40e_get_tx_pending(tx_ring, false);
4358
4359         /* HW is done executing descriptors, updated HEAD write back,
4360          * but SW hasn't processed those descriptors. If interrupt is
4361          * not generated from this point ON, it could result into
4362          * dev_watchdog detecting timeout on those netdev_queue,
4363          * hence proactively trigger SW interrupt.
4364          */
4365         if (tx_pending_hw && (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK))) {
4366                 /* NAPI Poll didn't run and clear since it was set */
4367                 if (test_and_clear_bit(I40E_Q_VECTOR_HUNG_DETECT,
4368                                        &tx_ring->q_vector->hung_detected)) {
4369                         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",
4370                                     vsi->seid, q_idx, tx_pending_hw,
4371                                     tx_ring->next_to_clean, head,
4372                                     tx_ring->next_to_use,
4373                                     readl(tx_ring->tail));
4374                         netdev_info(vsi->netdev, "VSI_seid %d, Issuing force_wb for TX queue %d, Interrupt Reg: 0x%x\n",
4375                                     vsi->seid, q_idx, val);
4376                         i40e_force_wb(vsi, tx_ring->q_vector);
4377                 } else {
4378                         /* First Chance - detected possible hung */
4379                         set_bit(I40E_Q_VECTOR_HUNG_DETECT,
4380                                 &tx_ring->q_vector->hung_detected);
4381                 }
4382         }
4383
4384         /* This is the case where we have interrupts missing,
4385          * so the tx_pending in HW will most likely be 0, but we
4386          * will have tx_pending in SW since the WB happened but the
4387          * interrupt got lost.
4388          */
4389         if ((!tx_pending_hw) && i40e_get_tx_pending(tx_ring, true) &&
4390             (!(val & I40E_PFINT_DYN_CTLN_INTENA_MASK))) {
4391                 if (napi_reschedule(&tx_ring->q_vector->napi))
4392                         tx_ring->tx_stats.tx_lost_interrupt++;
4393         }
4394 }
4395
4396 /**
4397  * i40e_detect_recover_hung - Function to detect and recover hung_queues
4398  * @pf:  pointer to PF struct
4399  *
4400  * LAN VSI has netdev and netdev has TX queues. This function is to check
4401  * each of those TX queues if they are hung, trigger recovery by issuing
4402  * SW interrupt.
4403  **/
4404 static void i40e_detect_recover_hung(struct i40e_pf *pf)
4405 {
4406         struct net_device *netdev;
4407         struct i40e_vsi *vsi;
4408         int i;
4409
4410         /* Only for LAN VSI */
4411         vsi = pf->vsi[pf->lan_vsi];
4412
4413         if (!vsi)
4414                 return;
4415
4416         /* Make sure, VSI state is not DOWN/RECOVERY_PENDING */
4417         if (test_bit(__I40E_DOWN, &vsi->back->state) ||
4418             test_bit(__I40E_RESET_RECOVERY_PENDING, &vsi->back->state))
4419                 return;
4420
4421         /* Make sure type is MAIN VSI */
4422         if (vsi->type != I40E_VSI_MAIN)
4423                 return;
4424
4425         netdev = vsi->netdev;
4426         if (!netdev)
4427                 return;
4428
4429         /* Bail out if netif_carrier is not OK */
4430         if (!netif_carrier_ok(netdev))
4431                 return;
4432
4433         /* Go thru' TX queues for netdev */
4434         for (i = 0; i < netdev->num_tx_queues; i++) {
4435                 struct netdev_queue *q;
4436
4437                 q = netdev_get_tx_queue(netdev, i);
4438                 if (q)
4439                         i40e_detect_recover_hung_queue(i, vsi);
4440         }
4441 }
4442
4443 /**
4444  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
4445  * @pf: pointer to PF
4446  *
4447  * Get TC map for ISCSI PF type that will include iSCSI TC
4448  * and LAN TC.
4449  **/
4450 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
4451 {
4452         struct i40e_dcb_app_priority_table app;
4453         struct i40e_hw *hw = &pf->hw;
4454         u8 enabled_tc = 1; /* TC0 is always enabled */
4455         u8 tc, i;
4456         /* Get the iSCSI APP TLV */
4457         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4458
4459         for (i = 0; i < dcbcfg->numapps; i++) {
4460                 app = dcbcfg->app[i];
4461                 if (app.selector == I40E_APP_SEL_TCPIP &&
4462                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
4463                         tc = dcbcfg->etscfg.prioritytable[app.priority];
4464                         enabled_tc |= BIT(tc);
4465                         break;
4466                 }
4467         }
4468
4469         return enabled_tc;
4470 }
4471
4472 /**
4473  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
4474  * @dcbcfg: the corresponding DCBx configuration structure
4475  *
4476  * Return the number of TCs from given DCBx configuration
4477  **/
4478 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
4479 {
4480         u8 num_tc = 0;
4481         int i;
4482
4483         /* Scan the ETS Config Priority Table to find
4484          * traffic class enabled for a given priority
4485          * and use the traffic class index to get the
4486          * number of traffic classes enabled
4487          */
4488         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4489                 if (dcbcfg->etscfg.prioritytable[i] > num_tc)
4490                         num_tc = dcbcfg->etscfg.prioritytable[i];
4491         }
4492
4493         /* Traffic class index starts from zero so
4494          * increment to return the actual count
4495          */
4496         return num_tc + 1;
4497 }
4498
4499 /**
4500  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
4501  * @dcbcfg: the corresponding DCBx configuration structure
4502  *
4503  * Query the current DCB configuration and return the number of
4504  * traffic classes enabled from the given DCBX config
4505  **/
4506 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
4507 {
4508         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
4509         u8 enabled_tc = 1;
4510         u8 i;
4511
4512         for (i = 0; i < num_tc; i++)
4513                 enabled_tc |= BIT(i);
4514
4515         return enabled_tc;
4516 }
4517
4518 /**
4519  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
4520  * @pf: PF being queried
4521  *
4522  * Return number of traffic classes enabled for the given PF
4523  **/
4524 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
4525 {
4526         struct i40e_hw *hw = &pf->hw;
4527         u8 i, enabled_tc;
4528         u8 num_tc = 0;
4529         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4530
4531         /* If DCB is not enabled then always in single TC */
4532         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4533                 return 1;
4534
4535         /* SFP mode will be enabled for all TCs on port */
4536         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4537                 return i40e_dcb_get_num_tc(dcbcfg);
4538
4539         /* MFP mode return count of enabled TCs for this PF */
4540         if (pf->hw.func_caps.iscsi)
4541                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
4542         else
4543                 return 1; /* Only TC0 */
4544
4545         /* At least have TC0 */
4546         enabled_tc = (enabled_tc ? enabled_tc : 0x1);
4547         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4548                 if (enabled_tc & BIT(i))
4549                         num_tc++;
4550         }
4551         return num_tc;
4552 }
4553
4554 /**
4555  * i40e_pf_get_default_tc - Get bitmap for first enabled TC
4556  * @pf: PF being queried
4557  *
4558  * Return a bitmap for first enabled traffic class for this PF.
4559  **/
4560 static u8 i40e_pf_get_default_tc(struct i40e_pf *pf)
4561 {
4562         u8 enabled_tc = pf->hw.func_caps.enabled_tcmap;
4563         u8 i = 0;
4564
4565         if (!enabled_tc)
4566                 return 0x1; /* TC0 */
4567
4568         /* Find the first enabled TC */
4569         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4570                 if (enabled_tc & BIT(i))
4571                         break;
4572         }
4573
4574         return BIT(i);
4575 }
4576
4577 /**
4578  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
4579  * @pf: PF being queried
4580  *
4581  * Return a bitmap for enabled traffic classes for this PF.
4582  **/
4583 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
4584 {
4585         /* If DCB is not enabled for this PF then just return default TC */
4586         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
4587                 return i40e_pf_get_default_tc(pf);
4588
4589         /* SFP mode we want PF to be enabled for all TCs */
4590         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
4591                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
4592
4593         /* MFP enabled and iSCSI PF type */
4594         if (pf->hw.func_caps.iscsi)
4595                 return i40e_get_iscsi_tc_map(pf);
4596         else
4597                 return i40e_pf_get_default_tc(pf);
4598 }
4599
4600 /**
4601  * i40e_vsi_get_bw_info - Query VSI BW Information
4602  * @vsi: the VSI being queried
4603  *
4604  * Returns 0 on success, negative value on failure
4605  **/
4606 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
4607 {
4608         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
4609         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
4610         struct i40e_pf *pf = vsi->back;
4611         struct i40e_hw *hw = &pf->hw;
4612         i40e_status ret;
4613         u32 tc_bw_max;
4614         int i;
4615
4616         /* Get the VSI level BW configuration */
4617         ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
4618         if (ret) {
4619                 dev_info(&pf->pdev->dev,
4620                          "couldn't get PF vsi bw config, err %s aq_err %s\n",
4621                          i40e_stat_str(&pf->hw, ret),
4622                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4623                 return -EINVAL;
4624         }
4625
4626         /* Get the VSI level BW configuration per TC */
4627         ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
4628                                                NULL);
4629         if (ret) {
4630                 dev_info(&pf->pdev->dev,
4631                          "couldn't get PF vsi ets bw config, err %s aq_err %s\n",
4632                          i40e_stat_str(&pf->hw, ret),
4633                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4634                 return -EINVAL;
4635         }
4636
4637         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
4638                 dev_info(&pf->pdev->dev,
4639                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
4640                          bw_config.tc_valid_bits,
4641                          bw_ets_config.tc_valid_bits);
4642                 /* Still continuing */
4643         }
4644
4645         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
4646         vsi->bw_max_quanta = bw_config.max_bw;
4647         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
4648                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
4649         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4650                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
4651                 vsi->bw_ets_limit_credits[i] =
4652                                         le16_to_cpu(bw_ets_config.credits[i]);
4653                 /* 3 bits out of 4 for each TC */
4654                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
4655         }
4656
4657         return 0;
4658 }
4659
4660 /**
4661  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
4662  * @vsi: the VSI being configured
4663  * @enabled_tc: TC bitmap
4664  * @bw_credits: BW shared credits per TC
4665  *
4666  * Returns 0 on success, negative value on failure
4667  **/
4668 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
4669                                        u8 *bw_share)
4670 {
4671         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
4672         i40e_status ret;
4673         int i;
4674
4675         bw_data.tc_valid_bits = enabled_tc;
4676         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4677                 bw_data.tc_bw_credits[i] = bw_share[i];
4678
4679         ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, vsi->seid, &bw_data,
4680                                        NULL);
4681         if (ret) {
4682                 dev_info(&vsi->back->pdev->dev,
4683                          "AQ command Config VSI BW allocation per TC failed = %d\n",
4684                          vsi->back->hw.aq.asq_last_status);
4685                 return -EINVAL;
4686         }
4687
4688         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
4689                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
4690
4691         return 0;
4692 }
4693
4694 /**
4695  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
4696  * @vsi: the VSI being configured
4697  * @enabled_tc: TC map to be enabled
4698  *
4699  **/
4700 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4701 {
4702         struct net_device *netdev = vsi->netdev;
4703         struct i40e_pf *pf = vsi->back;
4704         struct i40e_hw *hw = &pf->hw;
4705         u8 netdev_tc = 0;
4706         int i;
4707         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
4708
4709         if (!netdev)
4710                 return;
4711
4712         if (!enabled_tc) {
4713                 netdev_reset_tc(netdev);
4714                 return;
4715         }
4716
4717         /* Set up actual enabled TCs on the VSI */
4718         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
4719                 return;
4720
4721         /* set per TC queues for the VSI */
4722         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4723                 /* Only set TC queues for enabled tcs
4724                  *
4725                  * e.g. For a VSI that has TC0 and TC3 enabled the
4726                  * enabled_tc bitmap would be 0x00001001; the driver
4727                  * will set the numtc for netdev as 2 that will be
4728                  * referenced by the netdev layer as TC 0 and 1.
4729                  */
4730                 if (vsi->tc_config.enabled_tc & BIT(i))
4731                         netdev_set_tc_queue(netdev,
4732                                         vsi->tc_config.tc_info[i].netdev_tc,
4733                                         vsi->tc_config.tc_info[i].qcount,
4734                                         vsi->tc_config.tc_info[i].qoffset);
4735         }
4736
4737         /* Assign UP2TC map for the VSI */
4738         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
4739                 /* Get the actual TC# for the UP */
4740                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
4741                 /* Get the mapped netdev TC# for the UP */
4742                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
4743                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
4744         }
4745 }
4746
4747 /**
4748  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
4749  * @vsi: the VSI being configured
4750  * @ctxt: the ctxt buffer returned from AQ VSI update param command
4751  **/
4752 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
4753                                       struct i40e_vsi_context *ctxt)
4754 {
4755         /* copy just the sections touched not the entire info
4756          * since not all sections are valid as returned by
4757          * update vsi params
4758          */
4759         vsi->info.mapping_flags = ctxt->info.mapping_flags;
4760         memcpy(&vsi->info.queue_mapping,
4761                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
4762         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
4763                sizeof(vsi->info.tc_mapping));
4764 }
4765
4766 /**
4767  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
4768  * @vsi: VSI to be configured
4769  * @enabled_tc: TC bitmap
4770  *
4771  * This configures a particular VSI for TCs that are mapped to the
4772  * given TC bitmap. It uses default bandwidth share for TCs across
4773  * VSIs to configure TC for a particular VSI.
4774  *
4775  * NOTE:
4776  * It is expected that the VSI queues have been quisced before calling
4777  * this function.
4778  **/
4779 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
4780 {
4781         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
4782         struct i40e_vsi_context ctxt;
4783         int ret = 0;
4784         int i;
4785
4786         /* Check if enabled_tc is same as existing or new TCs */
4787         if (vsi->tc_config.enabled_tc == enabled_tc)
4788                 return ret;
4789
4790         /* Enable ETS TCs with equal BW Share for now across all VSIs */
4791         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4792                 if (enabled_tc & BIT(i))
4793                         bw_share[i] = 1;
4794         }
4795
4796         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
4797         if (ret) {
4798                 dev_info(&vsi->back->pdev->dev,
4799                          "Failed configuring TC map %d for VSI %d\n",
4800                          enabled_tc, vsi->seid);
4801                 goto out;
4802         }
4803
4804         /* Update Queue Pairs Mapping for currently enabled UPs */
4805         ctxt.seid = vsi->seid;
4806         ctxt.pf_num = vsi->back->hw.pf_id;
4807         ctxt.vf_num = 0;
4808         ctxt.uplink_seid = vsi->uplink_seid;
4809         ctxt.info = vsi->info;
4810         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
4811
4812         if (vsi->back->flags & I40E_FLAG_IWARP_ENABLED) {
4813                 ctxt.info.valid_sections |=
4814                                 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
4815                 ctxt.info.queueing_opt_flags |= I40E_AQ_VSI_QUE_OPT_TCP_ENA;
4816         }
4817
4818         /* Update the VSI after updating the VSI queue-mapping information */
4819         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
4820         if (ret) {
4821                 dev_info(&vsi->back->pdev->dev,
4822                          "Update vsi tc config failed, err %s aq_err %s\n",
4823                          i40e_stat_str(&vsi->back->hw, ret),
4824                          i40e_aq_str(&vsi->back->hw,
4825                                      vsi->back->hw.aq.asq_last_status));
4826                 goto out;
4827         }
4828         /* update the local VSI info with updated queue map */
4829         i40e_vsi_update_queue_map(vsi, &ctxt);
4830         vsi->info.valid_sections = 0;
4831
4832         /* Update current VSI BW information */
4833         ret = i40e_vsi_get_bw_info(vsi);
4834         if (ret) {
4835                 dev_info(&vsi->back->pdev->dev,
4836                          "Failed updating vsi bw info, err %s aq_err %s\n",
4837                          i40e_stat_str(&vsi->back->hw, ret),
4838                          i40e_aq_str(&vsi->back->hw,
4839                                      vsi->back->hw.aq.asq_last_status));
4840                 goto out;
4841         }
4842
4843         /* Update the netdev TC setup */
4844         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
4845 out:
4846         return ret;
4847 }
4848
4849 /**
4850  * i40e_veb_config_tc - Configure TCs for given VEB
4851  * @veb: given VEB
4852  * @enabled_tc: TC bitmap
4853  *
4854  * Configures given TC bitmap for VEB (switching) element
4855  **/
4856 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
4857 {
4858         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
4859         struct i40e_pf *pf = veb->pf;
4860         int ret = 0;
4861         int i;
4862
4863         /* No TCs or already enabled TCs just return */
4864         if (!enabled_tc || veb->enabled_tc == enabled_tc)
4865                 return ret;
4866
4867         bw_data.tc_valid_bits = enabled_tc;
4868         /* bw_data.absolute_credits is not set (relative) */
4869
4870         /* Enable ETS TCs with equal BW Share for now */
4871         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
4872                 if (enabled_tc & BIT(i))
4873                         bw_data.tc_bw_share_credits[i] = 1;
4874         }
4875
4876         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
4877                                                    &bw_data, NULL);
4878         if (ret) {
4879                 dev_info(&pf->pdev->dev,
4880                          "VEB bw config failed, err %s aq_err %s\n",
4881                          i40e_stat_str(&pf->hw, ret),
4882                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4883                 goto out;
4884         }
4885
4886         /* Update the BW information */
4887         ret = i40e_veb_get_bw_info(veb);
4888         if (ret) {
4889                 dev_info(&pf->pdev->dev,
4890                          "Failed getting veb bw config, err %s aq_err %s\n",
4891                          i40e_stat_str(&pf->hw, ret),
4892                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4893         }
4894
4895 out:
4896         return ret;
4897 }
4898
4899 #ifdef CONFIG_I40E_DCB
4900 /**
4901  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
4902  * @pf: PF struct
4903  *
4904  * Reconfigure VEB/VSIs on a given PF; it is assumed that
4905  * the caller would've quiesce all the VSIs before calling
4906  * this function
4907  **/
4908 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
4909 {
4910         u8 tc_map = 0;
4911         int ret;
4912         u8 v;
4913
4914         /* Enable the TCs available on PF to all VEBs */
4915         tc_map = i40e_pf_get_tc_map(pf);
4916         for (v = 0; v < I40E_MAX_VEB; v++) {
4917                 if (!pf->veb[v])
4918                         continue;
4919                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
4920                 if (ret) {
4921                         dev_info(&pf->pdev->dev,
4922                                  "Failed configuring TC for VEB seid=%d\n",
4923                                  pf->veb[v]->seid);
4924                         /* Will try to configure as many components */
4925                 }
4926         }
4927
4928         /* Update each VSI */
4929         for (v = 0; v < pf->num_alloc_vsi; v++) {
4930                 if (!pf->vsi[v])
4931                         continue;
4932
4933                 /* - Enable all TCs for the LAN VSI
4934 #ifdef I40E_FCOE
4935                  * - For FCoE VSI only enable the TC configured
4936                  *   as per the APP TLV
4937 #endif
4938                  * - For all others keep them at TC0 for now
4939                  */
4940                 if (v == pf->lan_vsi)
4941                         tc_map = i40e_pf_get_tc_map(pf);
4942                 else
4943                         tc_map = i40e_pf_get_default_tc(pf);
4944 #ifdef I40E_FCOE
4945                 if (pf->vsi[v]->type == I40E_VSI_FCOE)
4946                         tc_map = i40e_get_fcoe_tc_map(pf);
4947 #endif /* #ifdef I40E_FCOE */
4948
4949                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
4950                 if (ret) {
4951                         dev_info(&pf->pdev->dev,
4952                                  "Failed configuring TC for VSI seid=%d\n",
4953                                  pf->vsi[v]->seid);
4954                         /* Will try to configure as many components */
4955                 } else {
4956                         /* Re-configure VSI vectors based on updated TC map */
4957                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
4958                         if (pf->vsi[v]->netdev)
4959                                 i40e_dcbnl_set_all(pf->vsi[v]);
4960                 }
4961                 i40e_notify_client_of_l2_param_changes(pf->vsi[v]);
4962         }
4963 }
4964
4965 /**
4966  * i40e_resume_port_tx - Resume port Tx
4967  * @pf: PF struct
4968  *
4969  * Resume a port's Tx and issue a PF reset in case of failure to
4970  * resume.
4971  **/
4972 static int i40e_resume_port_tx(struct i40e_pf *pf)
4973 {
4974         struct i40e_hw *hw = &pf->hw;
4975         int ret;
4976
4977         ret = i40e_aq_resume_port_tx(hw, NULL);
4978         if (ret) {
4979                 dev_info(&pf->pdev->dev,
4980                          "Resume Port Tx failed, err %s aq_err %s\n",
4981                           i40e_stat_str(&pf->hw, ret),
4982                           i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
4983                 /* Schedule PF reset to recover */
4984                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
4985                 i40e_service_event_schedule(pf);
4986         }
4987
4988         return ret;
4989 }
4990
4991 /**
4992  * i40e_init_pf_dcb - Initialize DCB configuration
4993  * @pf: PF being configured
4994  *
4995  * Query the current DCB configuration and cache it
4996  * in the hardware structure
4997  **/
4998 static int i40e_init_pf_dcb(struct i40e_pf *pf)
4999 {
5000         struct i40e_hw *hw = &pf->hw;
5001         int err = 0;
5002
5003         /* Do not enable DCB for SW1 and SW2 images even if the FW is capable */
5004         if (pf->flags & I40E_FLAG_NO_DCB_SUPPORT)
5005                 goto out;
5006
5007         /* Get the initial DCB configuration */
5008         err = i40e_init_dcb(hw);
5009         if (!err) {
5010                 /* Device/Function is not DCBX capable */
5011                 if ((!hw->func_caps.dcb) ||
5012                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
5013                         dev_info(&pf->pdev->dev,
5014                                  "DCBX offload is not supported or is disabled for this PF.\n");
5015
5016                         if (pf->flags & I40E_FLAG_MFP_ENABLED)
5017                                 goto out;
5018
5019                 } else {
5020                         /* When status is not DISABLED then DCBX in FW */
5021                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
5022                                        DCB_CAP_DCBX_VER_IEEE;
5023
5024                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
5025                         /* Enable DCB tagging only when more than one TC */
5026                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5027                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5028                         dev_dbg(&pf->pdev->dev,
5029                                 "DCBX offload is supported for this PF.\n");
5030                 }
5031         } else {
5032                 dev_info(&pf->pdev->dev,
5033                          "Query for DCB configuration failed, err %s aq_err %s\n",
5034                          i40e_stat_str(&pf->hw, err),
5035                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5036         }
5037
5038 out:
5039         return err;
5040 }
5041 #endif /* CONFIG_I40E_DCB */
5042 #define SPEED_SIZE 14
5043 #define FC_SIZE 8
5044 /**
5045  * i40e_print_link_message - print link up or down
5046  * @vsi: the VSI for which link needs a message
5047  */
5048 void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
5049 {
5050         char *speed = "Unknown";
5051         char *fc = "Unknown";
5052
5053         if (vsi->current_isup == isup)
5054                 return;
5055         vsi->current_isup = isup;
5056         if (!isup) {
5057                 netdev_info(vsi->netdev, "NIC Link is Down\n");
5058                 return;
5059         }
5060
5061         /* Warn user if link speed on NPAR enabled partition is not at
5062          * least 10GB
5063          */
5064         if (vsi->back->hw.func_caps.npar_enable &&
5065             (vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
5066              vsi->back->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
5067                 netdev_warn(vsi->netdev,
5068                             "The partition detected link speed that is less than 10Gbps\n");
5069
5070         switch (vsi->back->hw.phy.link_info.link_speed) {
5071         case I40E_LINK_SPEED_40GB:
5072                 speed = "40 G";
5073                 break;
5074         case I40E_LINK_SPEED_20GB:
5075                 speed = "20 G";
5076                 break;
5077         case I40E_LINK_SPEED_10GB:
5078                 speed = "10 G";
5079                 break;
5080         case I40E_LINK_SPEED_1GB:
5081                 speed = "1000 M";
5082                 break;
5083         case I40E_LINK_SPEED_100MB:
5084                 speed = "100 M";
5085                 break;
5086         default:
5087                 break;
5088         }
5089
5090         switch (vsi->back->hw.fc.current_mode) {
5091         case I40E_FC_FULL:
5092                 fc = "RX/TX";
5093                 break;
5094         case I40E_FC_TX_PAUSE:
5095                 fc = "TX";
5096                 break;
5097         case I40E_FC_RX_PAUSE:
5098                 fc = "RX";
5099                 break;
5100         default:
5101                 fc = "None";
5102                 break;
5103         }
5104
5105         netdev_info(vsi->netdev, "NIC Link is Up %sbps Full Duplex, Flow Control: %s\n",
5106                     speed, fc);
5107 }
5108
5109 /**
5110  * i40e_up_complete - Finish the last steps of bringing up a connection
5111  * @vsi: the VSI being configured
5112  **/
5113 static int i40e_up_complete(struct i40e_vsi *vsi)
5114 {
5115         struct i40e_pf *pf = vsi->back;
5116         int err;
5117
5118         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
5119                 i40e_vsi_configure_msix(vsi);
5120         else
5121                 i40e_configure_msi_and_legacy(vsi);
5122
5123         /* start rings */
5124         err = i40e_vsi_control_rings(vsi, true);
5125         if (err)
5126                 return err;
5127
5128         clear_bit(__I40E_DOWN, &vsi->state);
5129         i40e_napi_enable_all(vsi);
5130         i40e_vsi_enable_irq(vsi);
5131
5132         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
5133             (vsi->netdev)) {
5134                 i40e_print_link_message(vsi, true);
5135                 netif_tx_start_all_queues(vsi->netdev);
5136                 netif_carrier_on(vsi->netdev);
5137         } else if (vsi->netdev) {
5138                 i40e_print_link_message(vsi, false);
5139                 /* need to check for qualified module here*/
5140                 if ((pf->hw.phy.link_info.link_info &
5141                         I40E_AQ_MEDIA_AVAILABLE) &&
5142                     (!(pf->hw.phy.link_info.an_info &
5143                         I40E_AQ_QUALIFIED_MODULE)))
5144                         netdev_err(vsi->netdev,
5145                                    "the driver failed to link because an unqualified module was detected.");
5146         }
5147
5148         /* replay FDIR SB filters */
5149         if (vsi->type == I40E_VSI_FDIR) {
5150                 /* reset fd counters */
5151                 pf->fd_add_err = pf->fd_atr_cnt = 0;
5152                 if (pf->fd_tcp_rule > 0) {
5153                         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5154                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5155                                 dev_info(&pf->pdev->dev, "Forcing ATR off, sideband rules for TCP/IPv4 exist\n");
5156                         pf->fd_tcp_rule = 0;
5157                 }
5158                 i40e_fdir_filter_restore(vsi);
5159         }
5160
5161         /* On the next run of the service_task, notify any clients of the new
5162          * opened netdev
5163          */
5164         pf->flags |= I40E_FLAG_SERVICE_CLIENT_REQUESTED;
5165         i40e_service_event_schedule(pf);
5166
5167         return 0;
5168 }
5169
5170 /**
5171  * i40e_vsi_reinit_locked - Reset the VSI
5172  * @vsi: the VSI being configured
5173  *
5174  * Rebuild the ring structs after some configuration
5175  * has changed, e.g. MTU size.
5176  **/
5177 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
5178 {
5179         struct i40e_pf *pf = vsi->back;
5180
5181         WARN_ON(in_interrupt());
5182         while (test_and_set_bit(__I40E_CONFIG_BUSY, &pf->state))
5183                 usleep_range(1000, 2000);
5184         i40e_down(vsi);
5185
5186         /* Give a VF some time to respond to the reset.  The
5187          * two second wait is based upon the watchdog cycle in
5188          * the VF driver.
5189          */
5190         if (vsi->type == I40E_VSI_SRIOV)
5191                 msleep(2000);
5192         i40e_up(vsi);
5193         clear_bit(__I40E_CONFIG_BUSY, &pf->state);
5194 }
5195
5196 /**
5197  * i40e_up - Bring the connection back up after being down
5198  * @vsi: the VSI being configured
5199  **/
5200 int i40e_up(struct i40e_vsi *vsi)
5201 {
5202         int err;
5203
5204         err = i40e_vsi_configure(vsi);
5205         if (!err)
5206                 err = i40e_up_complete(vsi);
5207
5208         return err;
5209 }
5210
5211 /**
5212  * i40e_down - Shutdown the connection processing
5213  * @vsi: the VSI being stopped
5214  **/
5215 void i40e_down(struct i40e_vsi *vsi)
5216 {
5217         int i;
5218
5219         /* It is assumed that the caller of this function
5220          * sets the vsi->state __I40E_DOWN bit.
5221          */
5222         if (vsi->netdev) {
5223                 netif_carrier_off(vsi->netdev);
5224                 netif_tx_disable(vsi->netdev);
5225         }
5226         i40e_vsi_disable_irq(vsi);
5227         i40e_vsi_control_rings(vsi, false);
5228         i40e_napi_disable_all(vsi);
5229
5230         for (i = 0; i < vsi->num_queue_pairs; i++) {
5231                 i40e_clean_tx_ring(vsi->tx_rings[i]);
5232                 i40e_clean_rx_ring(vsi->rx_rings[i]);
5233         }
5234 }
5235
5236 /**
5237  * i40e_setup_tc - configure multiple traffic classes
5238  * @netdev: net device to configure
5239  * @tc: number of traffic classes to enable
5240  **/
5241 static int i40e_setup_tc(struct net_device *netdev, u8 tc)
5242 {
5243         struct i40e_netdev_priv *np = netdev_priv(netdev);
5244         struct i40e_vsi *vsi = np->vsi;
5245         struct i40e_pf *pf = vsi->back;
5246         u8 enabled_tc = 0;
5247         int ret = -EINVAL;
5248         int i;
5249
5250         /* Check if DCB enabled to continue */
5251         if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
5252                 netdev_info(netdev, "DCB is not enabled for adapter\n");
5253                 goto exit;
5254         }
5255
5256         /* Check if MFP enabled */
5257         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
5258                 netdev_info(netdev, "Configuring TC not supported in MFP mode\n");
5259                 goto exit;
5260         }
5261
5262         /* Check whether tc count is within enabled limit */
5263         if (tc > i40e_pf_get_num_tc(pf)) {
5264                 netdev_info(netdev, "TC count greater than enabled on link for adapter\n");
5265                 goto exit;
5266         }
5267
5268         /* Generate TC map for number of tc requested */
5269         for (i = 0; i < tc; i++)
5270                 enabled_tc |= BIT(i);
5271
5272         /* Requesting same TC configuration as already enabled */
5273         if (enabled_tc == vsi->tc_config.enabled_tc)
5274                 return 0;
5275
5276         /* Quiesce VSI queues */
5277         i40e_quiesce_vsi(vsi);
5278
5279         /* Configure VSI for enabled TCs */
5280         ret = i40e_vsi_config_tc(vsi, enabled_tc);
5281         if (ret) {
5282                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
5283                             vsi->seid);
5284                 goto exit;
5285         }
5286
5287         /* Unquiesce VSI */
5288         i40e_unquiesce_vsi(vsi);
5289
5290 exit:
5291         return ret;
5292 }
5293
5294 #ifdef I40E_FCOE
5295 int __i40e_setup_tc(struct net_device *netdev, u32 handle, __be16 proto,
5296                     struct tc_to_netdev *tc)
5297 #else
5298 static int __i40e_setup_tc(struct net_device *netdev, u32 handle, __be16 proto,
5299                            struct tc_to_netdev *tc)
5300 #endif
5301 {
5302         if (handle != TC_H_ROOT || tc->type != TC_SETUP_MQPRIO)
5303                 return -EINVAL;
5304         return i40e_setup_tc(netdev, tc->tc);
5305 }
5306
5307 /**
5308  * i40e_open - Called when a network interface is made active
5309  * @netdev: network interface device structure
5310  *
5311  * The open entry point is called when a network interface is made
5312  * active by the system (IFF_UP).  At this point all resources needed
5313  * for transmit and receive operations are allocated, the interrupt
5314  * handler is registered with the OS, the netdev watchdog subtask is
5315  * enabled, and the stack is notified that the interface is ready.
5316  *
5317  * Returns 0 on success, negative value on failure
5318  **/
5319 int i40e_open(struct net_device *netdev)
5320 {
5321         struct i40e_netdev_priv *np = netdev_priv(netdev);
5322         struct i40e_vsi *vsi = np->vsi;
5323         struct i40e_pf *pf = vsi->back;
5324         int err;
5325
5326         /* disallow open during test or if eeprom is broken */
5327         if (test_bit(__I40E_TESTING, &pf->state) ||
5328             test_bit(__I40E_BAD_EEPROM, &pf->state))
5329                 return -EBUSY;
5330
5331         netif_carrier_off(netdev);
5332
5333         err = i40e_vsi_open(vsi);
5334         if (err)
5335                 return err;
5336
5337         /* configure global TSO hardware offload settings */
5338         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
5339                                                        TCP_FLAG_FIN) >> 16);
5340         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
5341                                                        TCP_FLAG_FIN |
5342                                                        TCP_FLAG_CWR) >> 16);
5343         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
5344
5345 #ifdef CONFIG_I40E_VXLAN
5346         vxlan_get_rx_port(netdev);
5347 #endif
5348 #ifdef CONFIG_I40E_GENEVE
5349         if (pf->flags & I40E_FLAG_GENEVE_OFFLOAD_CAPABLE)
5350                 geneve_get_rx_port(netdev);
5351 #endif
5352
5353         i40e_notify_client_of_netdev_open(vsi);
5354
5355         return 0;
5356 }
5357
5358 /**
5359  * i40e_vsi_open -
5360  * @vsi: the VSI to open
5361  *
5362  * Finish initialization of the VSI.
5363  *
5364  * Returns 0 on success, negative value on failure
5365  **/
5366 int i40e_vsi_open(struct i40e_vsi *vsi)
5367 {
5368         struct i40e_pf *pf = vsi->back;
5369         char int_name[I40E_INT_NAME_STR_LEN];
5370         int err;
5371
5372         /* allocate descriptors */
5373         err = i40e_vsi_setup_tx_resources(vsi);
5374         if (err)
5375                 goto err_setup_tx;
5376         err = i40e_vsi_setup_rx_resources(vsi);
5377         if (err)
5378                 goto err_setup_rx;
5379
5380         err = i40e_vsi_configure(vsi);
5381         if (err)
5382                 goto err_setup_rx;
5383
5384         if (vsi->netdev) {
5385                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
5386                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
5387                 err = i40e_vsi_request_irq(vsi, int_name);
5388                 if (err)
5389                         goto err_setup_rx;
5390
5391                 /* Notify the stack of the actual queue counts. */
5392                 err = netif_set_real_num_tx_queues(vsi->netdev,
5393                                                    vsi->num_queue_pairs);
5394                 if (err)
5395                         goto err_set_queues;
5396
5397                 err = netif_set_real_num_rx_queues(vsi->netdev,
5398                                                    vsi->num_queue_pairs);
5399                 if (err)
5400                         goto err_set_queues;
5401
5402         } else if (vsi->type == I40E_VSI_FDIR) {
5403                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
5404                          dev_driver_string(&pf->pdev->dev),
5405                          dev_name(&pf->pdev->dev));
5406                 err = i40e_vsi_request_irq(vsi, int_name);
5407
5408         } else {
5409                 err = -EINVAL;
5410                 goto err_setup_rx;
5411         }
5412
5413         err = i40e_up_complete(vsi);
5414         if (err)
5415                 goto err_up_complete;
5416
5417         return 0;
5418
5419 err_up_complete:
5420         i40e_down(vsi);
5421 err_set_queues:
5422         i40e_vsi_free_irq(vsi);
5423 err_setup_rx:
5424         i40e_vsi_free_rx_resources(vsi);
5425 err_setup_tx:
5426         i40e_vsi_free_tx_resources(vsi);
5427         if (vsi == pf->vsi[pf->lan_vsi])
5428                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
5429
5430         return err;
5431 }
5432
5433 /**
5434  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
5435  * @pf: Pointer to PF
5436  *
5437  * This function destroys the hlist where all the Flow Director
5438  * filters were saved.
5439  **/
5440 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
5441 {
5442         struct i40e_fdir_filter *filter;
5443         struct hlist_node *node2;
5444
5445         hlist_for_each_entry_safe(filter, node2,
5446                                   &pf->fdir_filter_list, fdir_node) {
5447                 hlist_del(&filter->fdir_node);
5448                 kfree(filter);
5449         }
5450         pf->fdir_pf_active_filters = 0;
5451 }
5452
5453 /**
5454  * i40e_close - Disables a network interface
5455  * @netdev: network interface device structure
5456  *
5457  * The close entry point is called when an interface is de-activated
5458  * by the OS.  The hardware is still under the driver's control, but
5459  * this netdev interface is disabled.
5460  *
5461  * Returns 0, this is not allowed to fail
5462  **/
5463 int i40e_close(struct net_device *netdev)
5464 {
5465         struct i40e_netdev_priv *np = netdev_priv(netdev);
5466         struct i40e_vsi *vsi = np->vsi;
5467
5468         i40e_vsi_close(vsi);
5469
5470         return 0;
5471 }
5472
5473 /**
5474  * i40e_do_reset - Start a PF or Core Reset sequence
5475  * @pf: board private structure
5476  * @reset_flags: which reset is requested
5477  *
5478  * The essential difference in resets is that the PF Reset
5479  * doesn't clear the packet buffers, doesn't reset the PE
5480  * firmware, and doesn't bother the other PFs on the chip.
5481  **/
5482 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags)
5483 {
5484         u32 val;
5485
5486         WARN_ON(in_interrupt());
5487
5488
5489         /* do the biggest reset indicated */
5490         if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {
5491
5492                 /* Request a Global Reset
5493                  *
5494                  * This will start the chip's countdown to the actual full
5495                  * chip reset event, and a warning interrupt to be sent
5496                  * to all PFs, including the requestor.  Our handler
5497                  * for the warning interrupt will deal with the shutdown
5498                  * and recovery of the switch setup.
5499                  */
5500                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
5501                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5502                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
5503                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5504
5505         } else if (reset_flags & BIT_ULL(__I40E_CORE_RESET_REQUESTED)) {
5506
5507                 /* Request a Core Reset
5508                  *
5509                  * Same as Global Reset, except does *not* include the MAC/PHY
5510                  */
5511                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
5512                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
5513                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
5514                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
5515                 i40e_flush(&pf->hw);
5516
5517         } else if (reset_flags & BIT_ULL(__I40E_PF_RESET_REQUESTED)) {
5518
5519                 /* Request a PF Reset
5520                  *
5521                  * Resets only the PF-specific registers
5522                  *
5523                  * This goes directly to the tear-down and rebuild of
5524                  * the switch, since we need to do all the recovery as
5525                  * for the Core Reset.
5526                  */
5527                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
5528                 i40e_handle_reset_warning(pf);
5529
5530         } else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) {
5531                 int v;
5532
5533                 /* Find the VSI(s) that requested a re-init */
5534                 dev_info(&pf->pdev->dev,
5535                          "VSI reinit requested\n");
5536                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5537                         struct i40e_vsi *vsi = pf->vsi[v];
5538
5539                         if (vsi != NULL &&
5540                             test_bit(__I40E_REINIT_REQUESTED, &vsi->state)) {
5541                                 i40e_vsi_reinit_locked(pf->vsi[v]);
5542                                 clear_bit(__I40E_REINIT_REQUESTED, &vsi->state);
5543                         }
5544                 }
5545         } else if (reset_flags & BIT_ULL(__I40E_DOWN_REQUESTED)) {
5546                 int v;
5547
5548                 /* Find the VSI(s) that needs to be brought down */
5549                 dev_info(&pf->pdev->dev, "VSI down requested\n");
5550                 for (v = 0; v < pf->num_alloc_vsi; v++) {
5551                         struct i40e_vsi *vsi = pf->vsi[v];
5552
5553                         if (vsi != NULL &&
5554                             test_bit(__I40E_DOWN_REQUESTED, &vsi->state)) {
5555                                 set_bit(__I40E_DOWN, &vsi->state);
5556                                 i40e_down(vsi);
5557                                 clear_bit(__I40E_DOWN_REQUESTED, &vsi->state);
5558                         }
5559                 }
5560         } else {
5561                 dev_info(&pf->pdev->dev,
5562                          "bad reset request 0x%08x\n", reset_flags);
5563         }
5564 }
5565
5566 #ifdef CONFIG_I40E_DCB
5567 /**
5568  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
5569  * @pf: board private structure
5570  * @old_cfg: current DCB config
5571  * @new_cfg: new DCB config
5572  **/
5573 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
5574                             struct i40e_dcbx_config *old_cfg,
5575                             struct i40e_dcbx_config *new_cfg)
5576 {
5577         bool need_reconfig = false;
5578
5579         /* Check if ETS configuration has changed */
5580         if (memcmp(&new_cfg->etscfg,
5581                    &old_cfg->etscfg,
5582                    sizeof(new_cfg->etscfg))) {
5583                 /* If Priority Table has changed reconfig is needed */
5584                 if (memcmp(&new_cfg->etscfg.prioritytable,
5585                            &old_cfg->etscfg.prioritytable,
5586                            sizeof(new_cfg->etscfg.prioritytable))) {
5587                         need_reconfig = true;
5588                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
5589                 }
5590
5591                 if (memcmp(&new_cfg->etscfg.tcbwtable,
5592                            &old_cfg->etscfg.tcbwtable,
5593                            sizeof(new_cfg->etscfg.tcbwtable)))
5594                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
5595
5596                 if (memcmp(&new_cfg->etscfg.tsatable,
5597                            &old_cfg->etscfg.tsatable,
5598                            sizeof(new_cfg->etscfg.tsatable)))
5599                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
5600         }
5601
5602         /* Check if PFC configuration has changed */
5603         if (memcmp(&new_cfg->pfc,
5604                    &old_cfg->pfc,
5605                    sizeof(new_cfg->pfc))) {
5606                 need_reconfig = true;
5607                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
5608         }
5609
5610         /* Check if APP Table has changed */
5611         if (memcmp(&new_cfg->app,
5612                    &old_cfg->app,
5613                    sizeof(new_cfg->app))) {
5614                 need_reconfig = true;
5615                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
5616         }
5617
5618         dev_dbg(&pf->pdev->dev, "dcb need_reconfig=%d\n", need_reconfig);
5619         return need_reconfig;
5620 }
5621
5622 /**
5623  * i40e_handle_lldp_event - Handle LLDP Change MIB event
5624  * @pf: board private structure
5625  * @e: event info posted on ARQ
5626  **/
5627 static int i40e_handle_lldp_event(struct i40e_pf *pf,
5628                                   struct i40e_arq_event_info *e)
5629 {
5630         struct i40e_aqc_lldp_get_mib *mib =
5631                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
5632         struct i40e_hw *hw = &pf->hw;
5633         struct i40e_dcbx_config tmp_dcbx_cfg;
5634         bool need_reconfig = false;
5635         int ret = 0;
5636         u8 type;
5637
5638         /* Not DCB capable or capability disabled */
5639         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
5640                 return ret;
5641
5642         /* Ignore if event is not for Nearest Bridge */
5643         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
5644                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
5645         dev_dbg(&pf->pdev->dev, "LLDP event mib bridge type 0x%x\n", type);
5646         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
5647                 return ret;
5648
5649         /* Check MIB Type and return if event for Remote MIB update */
5650         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
5651         dev_dbg(&pf->pdev->dev,
5652                 "LLDP event mib type %s\n", type ? "remote" : "local");
5653         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
5654                 /* Update the remote cached instance and return */
5655                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
5656                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
5657                                 &hw->remote_dcbx_config);
5658                 goto exit;
5659         }
5660
5661         /* Store the old configuration */
5662         tmp_dcbx_cfg = hw->local_dcbx_config;
5663
5664         /* Reset the old DCBx configuration data */
5665         memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
5666         /* Get updated DCBX data from firmware */
5667         ret = i40e_get_dcb_config(&pf->hw);
5668         if (ret) {
5669                 dev_info(&pf->pdev->dev,
5670                          "Failed querying DCB configuration data from firmware, err %s aq_err %s\n",
5671                          i40e_stat_str(&pf->hw, ret),
5672                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5673                 goto exit;
5674         }
5675
5676         /* No change detected in DCBX configs */
5677         if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
5678                     sizeof(tmp_dcbx_cfg))) {
5679                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
5680                 goto exit;
5681         }
5682
5683         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
5684                                                &hw->local_dcbx_config);
5685
5686         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
5687
5688         if (!need_reconfig)
5689                 goto exit;
5690
5691         /* Enable DCB tagging only when more than one TC */
5692         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
5693                 pf->flags |= I40E_FLAG_DCB_ENABLED;
5694         else
5695                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
5696
5697         set_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5698         /* Reconfiguration needed quiesce all VSIs */
5699         i40e_pf_quiesce_all_vsi(pf);
5700
5701         /* Changes in configuration update VEB/VSI */
5702         i40e_dcb_reconfigure(pf);
5703
5704         ret = i40e_resume_port_tx(pf);
5705
5706         clear_bit(__I40E_PORT_TX_SUSPENDED, &pf->state);
5707         /* In case of error no point in resuming VSIs */
5708         if (ret)
5709                 goto exit;
5710
5711         /* Wait for the PF's queues to be disabled */
5712         ret = i40e_pf_wait_queues_disabled(pf);
5713         if (ret) {
5714                 /* Schedule PF reset to recover */
5715                 set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
5716                 i40e_service_event_schedule(pf);
5717         } else {
5718                 i40e_pf_unquiesce_all_vsi(pf);
5719         }
5720
5721 exit:
5722         return ret;
5723 }
5724 #endif /* CONFIG_I40E_DCB */
5725
5726 /**
5727  * i40e_do_reset_safe - Protected reset path for userland calls.
5728  * @pf: board private structure
5729  * @reset_flags: which reset is requested
5730  *
5731  **/
5732 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
5733 {
5734         rtnl_lock();
5735         i40e_do_reset(pf, reset_flags);
5736         rtnl_unlock();
5737 }
5738
5739 /**
5740  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
5741  * @pf: board private structure
5742  * @e: event info posted on ARQ
5743  *
5744  * Handler for LAN Queue Overflow Event generated by the firmware for PF
5745  * and VF queues
5746  **/
5747 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
5748                                            struct i40e_arq_event_info *e)
5749 {
5750         struct i40e_aqc_lan_overflow *data =
5751                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
5752         u32 queue = le32_to_cpu(data->prtdcb_rupto);
5753         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
5754         struct i40e_hw *hw = &pf->hw;
5755         struct i40e_vf *vf;
5756         u16 vf_id;
5757
5758         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
5759                 queue, qtx_ctl);
5760
5761         /* Queue belongs to VF, find the VF and issue VF reset */
5762         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
5763             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
5764                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
5765                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
5766                 vf_id -= hw->func_caps.vf_base_id;
5767                 vf = &pf->vf[vf_id];
5768                 i40e_vc_notify_vf_reset(vf);
5769                 /* Allow VF to process pending reset notification */
5770                 msleep(20);
5771                 i40e_reset_vf(vf, false);
5772         }
5773 }
5774
5775 /**
5776  * i40e_service_event_complete - Finish up the service event
5777  * @pf: board private structure
5778  **/
5779 static void i40e_service_event_complete(struct i40e_pf *pf)
5780 {
5781         WARN_ON(!test_bit(__I40E_SERVICE_SCHED, &pf->state));
5782
5783         /* flush memory to make sure state is correct before next watchog */
5784         smp_mb__before_atomic();
5785         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
5786 }
5787
5788 /**
5789  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
5790  * @pf: board private structure
5791  **/
5792 u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
5793 {
5794         u32 val, fcnt_prog;
5795
5796         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5797         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
5798         return fcnt_prog;
5799 }
5800
5801 /**
5802  * i40e_get_current_fd_count - Get total FD filters programmed for this PF
5803  * @pf: board private structure
5804  **/
5805 u32 i40e_get_current_fd_count(struct i40e_pf *pf)
5806 {
5807         u32 val, fcnt_prog;
5808
5809         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
5810         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
5811                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
5812                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
5813         return fcnt_prog;
5814 }
5815
5816 /**
5817  * i40e_get_global_fd_count - Get total FD filters programmed on device
5818  * @pf: board private structure
5819  **/
5820 u32 i40e_get_global_fd_count(struct i40e_pf *pf)
5821 {
5822         u32 val, fcnt_prog;
5823
5824         val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
5825         fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
5826                     ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
5827                      I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
5828         return fcnt_prog;
5829 }
5830
5831 /**
5832  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
5833  * @pf: board private structure
5834  **/
5835 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
5836 {
5837         struct i40e_fdir_filter *filter;
5838         u32 fcnt_prog, fcnt_avail;
5839         struct hlist_node *node;
5840
5841         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5842                 return;
5843
5844         /* Check if, FD SB or ATR was auto disabled and if there is enough room
5845          * to re-enable
5846          */
5847         fcnt_prog = i40e_get_global_fd_count(pf);
5848         fcnt_avail = pf->fdir_pf_filter_count;
5849         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
5850             (pf->fd_add_err == 0) ||
5851             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt)) {
5852                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
5853                     (pf->auto_disable_flags & I40E_FLAG_FD_SB_ENABLED)) {
5854                         pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
5855                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5856                                 dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
5857                 }
5858         }
5859         /* Wait for some more space to be available to turn on ATR */
5860         if (fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM * 2)) {
5861                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
5862                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED)) {
5863                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5864                         if (I40E_DEBUG_FD & pf->hw.debug_mask)
5865                                 dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table now\n");
5866                 }
5867         }
5868
5869         /* if hw had a problem adding a filter, delete it */
5870         if (pf->fd_inv > 0) {
5871                 hlist_for_each_entry_safe(filter, node,
5872                                           &pf->fdir_filter_list, fdir_node) {
5873                         if (filter->fd_id == pf->fd_inv) {
5874                                 hlist_del(&filter->fdir_node);
5875                                 kfree(filter);
5876                                 pf->fdir_pf_active_filters--;
5877                         }
5878                 }
5879         }
5880 }
5881
5882 #define I40E_MIN_FD_FLUSH_INTERVAL 10
5883 #define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
5884 /**
5885  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
5886  * @pf: board private structure
5887  **/
5888 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
5889 {
5890         unsigned long min_flush_time;
5891         int flush_wait_retry = 50;
5892         bool disable_atr = false;
5893         int fd_room;
5894         int reg;
5895
5896         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5897                 return;
5898
5899         if (!time_after(jiffies, pf->fd_flush_timestamp +
5900                                  (I40E_MIN_FD_FLUSH_INTERVAL * HZ)))
5901                 return;
5902
5903         /* If the flush is happening too quick and we have mostly SB rules we
5904          * should not re-enable ATR for some time.
5905          */
5906         min_flush_time = pf->fd_flush_timestamp +
5907                          (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
5908         fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;
5909
5910         if (!(time_after(jiffies, min_flush_time)) &&
5911             (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
5912                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
5913                         dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
5914                 disable_atr = true;
5915         }
5916
5917         pf->fd_flush_timestamp = jiffies;
5918         pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED;
5919         /* flush all filters */
5920         wr32(&pf->hw, I40E_PFQF_CTL_1,
5921              I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
5922         i40e_flush(&pf->hw);
5923         pf->fd_flush_cnt++;
5924         pf->fd_add_err = 0;
5925         do {
5926                 /* Check FD flush status every 5-6msec */
5927                 usleep_range(5000, 6000);
5928                 reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
5929                 if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
5930                         break;
5931         } while (flush_wait_retry--);
5932         if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
5933                 dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
5934         } else {
5935                 /* replay sideband filters */
5936                 i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
5937                 if (!disable_atr)
5938                         pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
5939                 clear_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state);
5940                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
5941                         dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
5942         }
5943
5944 }
5945
5946 /**
5947  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
5948  * @pf: board private structure
5949  **/
5950 u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
5951 {
5952         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
5953 }
5954
5955 /* We can see up to 256 filter programming desc in transit if the filters are
5956  * being applied really fast; before we see the first
5957  * filter miss error on Rx queue 0. Accumulating enough error messages before
5958  * reacting will make sure we don't cause flush too often.
5959  */
5960 #define I40E_MAX_FD_PROGRAM_ERROR 256
5961
5962 /**
5963  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
5964  * @pf: board private structure
5965  **/
5966 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
5967 {
5968
5969         /* if interface is down do nothing */
5970         if (test_bit(__I40E_DOWN, &pf->state))
5971                 return;
5972
5973         if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED)))
5974                 return;
5975
5976         if (test_bit(__I40E_FD_FLUSH_REQUESTED, &pf->state))
5977                 i40e_fdir_flush_and_replay(pf);
5978
5979         i40e_fdir_check_and_reenable(pf);
5980
5981 }
5982
5983 /**
5984  * i40e_vsi_link_event - notify VSI of a link event
5985  * @vsi: vsi to be notified
5986  * @link_up: link up or down
5987  **/
5988 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
5989 {
5990         if (!vsi || test_bit(__I40E_DOWN, &vsi->state))
5991                 return;
5992
5993         switch (vsi->type) {
5994         case I40E_VSI_MAIN:
5995 #ifdef I40E_FCOE
5996         case I40E_VSI_FCOE:
5997 #endif
5998                 if (!vsi->netdev || !vsi->netdev_registered)
5999                         break;
6000
6001                 if (link_up) {
6002                         netif_carrier_on(vsi->netdev);
6003                         netif_tx_wake_all_queues(vsi->netdev);
6004                 } else {
6005                         netif_carrier_off(vsi->netdev);
6006                         netif_tx_stop_all_queues(vsi->netdev);
6007                 }
6008                 break;
6009
6010         case I40E_VSI_SRIOV:
6011         case I40E_VSI_VMDQ2:
6012         case I40E_VSI_CTRL:
6013         case I40E_VSI_IWARP:
6014         case I40E_VSI_MIRROR:
6015         default:
6016                 /* there is no notification for other VSIs */
6017                 break;
6018         }
6019 }
6020
6021 /**
6022  * i40e_veb_link_event - notify elements on the veb of a link event
6023  * @veb: veb to be notified
6024  * @link_up: link up or down
6025  **/
6026 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
6027 {
6028         struct i40e_pf *pf;
6029         int i;
6030
6031         if (!veb || !veb->pf)
6032                 return;
6033         pf = veb->pf;
6034
6035         /* depth first... */
6036         for (i = 0; i < I40E_MAX_VEB; i++)
6037                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
6038                         i40e_veb_link_event(pf->veb[i], link_up);
6039
6040         /* ... now the local VSIs */
6041         for (i = 0; i < pf->num_alloc_vsi; i++)
6042                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
6043                         i40e_vsi_link_event(pf->vsi[i], link_up);
6044 }
6045
6046 /**
6047  * i40e_link_event - Update netif_carrier status
6048  * @pf: board private structure
6049  **/
6050 static void i40e_link_event(struct i40e_pf *pf)
6051 {
6052         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6053         u8 new_link_speed, old_link_speed;
6054         i40e_status status;
6055         bool new_link, old_link;
6056
6057         /* save off old link status information */
6058         pf->hw.phy.link_info_old = pf->hw.phy.link_info;
6059
6060         /* set this to force the get_link_status call to refresh state */
6061         pf->hw.phy.get_link_info = true;
6062
6063         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
6064
6065         status = i40e_get_link_status(&pf->hw, &new_link);
6066         if (status) {
6067                 dev_dbg(&pf->pdev->dev, "couldn't get link state, status: %d\n",
6068                         status);
6069                 return;
6070         }
6071
6072         old_link_speed = pf->hw.phy.link_info_old.link_speed;
6073         new_link_speed = pf->hw.phy.link_info.link_speed;
6074
6075         if (new_link == old_link &&
6076             new_link_speed == old_link_speed &&
6077             (test_bit(__I40E_DOWN, &vsi->state) ||
6078              new_link == netif_carrier_ok(vsi->netdev)))
6079                 return;
6080
6081         if (!test_bit(__I40E_DOWN, &vsi->state))
6082                 i40e_print_link_message(vsi, new_link);
6083
6084         /* Notify the base of the switch tree connected to
6085          * the link.  Floating VEBs are not notified.
6086          */
6087         if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
6088                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
6089         else
6090                 i40e_vsi_link_event(vsi, new_link);
6091
6092         if (pf->vf)
6093                 i40e_vc_notify_link_state(pf);
6094
6095         if (pf->flags & I40E_FLAG_PTP)
6096                 i40e_ptp_set_increment(pf);
6097 }
6098
6099 /**
6100  * i40e_watchdog_subtask - periodic checks not using event driven response
6101  * @pf: board private structure
6102  **/
6103 static void i40e_watchdog_subtask(struct i40e_pf *pf)
6104 {
6105         int i;
6106
6107         /* if interface is down do nothing */
6108         if (test_bit(__I40E_DOWN, &pf->state) ||
6109             test_bit(__I40E_CONFIG_BUSY, &pf->state))
6110                 return;
6111
6112         /* make sure we don't do these things too often */
6113         if (time_before(jiffies, (pf->service_timer_previous +
6114                                   pf->service_timer_period)))
6115                 return;
6116         pf->service_timer_previous = jiffies;
6117
6118         if (pf->flags & I40E_FLAG_LINK_POLLING_ENABLED)
6119                 i40e_link_event(pf);
6120
6121         /* Update the stats for active netdevs so the network stack
6122          * can look at updated numbers whenever it cares to
6123          */
6124         for (i = 0; i < pf->num_alloc_vsi; i++)
6125                 if (pf->vsi[i] && pf->vsi[i]->netdev)
6126                         i40e_update_stats(pf->vsi[i]);
6127
6128         if (pf->flags & I40E_FLAG_VEB_STATS_ENABLED) {
6129                 /* Update the stats for the active switching components */
6130                 for (i = 0; i < I40E_MAX_VEB; i++)
6131                         if (pf->veb[i])
6132                                 i40e_update_veb_stats(pf->veb[i]);
6133         }
6134
6135         i40e_ptp_rx_hang(pf->vsi[pf->lan_vsi]);
6136 }
6137
6138 /**
6139  * i40e_reset_subtask - Set up for resetting the device and driver
6140  * @pf: board private structure
6141  **/
6142 static void i40e_reset_subtask(struct i40e_pf *pf)
6143 {
6144         u32 reset_flags = 0;
6145
6146         rtnl_lock();
6147         if (test_bit(__I40E_REINIT_REQUESTED, &pf->state)) {
6148                 reset_flags |= BIT(__I40E_REINIT_REQUESTED);
6149                 clear_bit(__I40E_REINIT_REQUESTED, &pf->state);
6150         }
6151         if (test_bit(__I40E_PF_RESET_REQUESTED, &pf->state)) {
6152                 reset_flags |= BIT(__I40E_PF_RESET_REQUESTED);
6153                 clear_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
6154         }
6155         if (test_bit(__I40E_CORE_RESET_REQUESTED, &pf->state)) {
6156                 reset_flags |= BIT(__I40E_CORE_RESET_REQUESTED);
6157                 clear_bit(__I40E_CORE_RESET_REQUESTED, &pf->state);
6158         }
6159         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state)) {
6160                 reset_flags |= BIT(__I40E_GLOBAL_RESET_REQUESTED);
6161                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, &pf->state);
6162         }
6163         if (test_bit(__I40E_DOWN_REQUESTED, &pf->state)) {
6164                 reset_flags |= BIT(__I40E_DOWN_REQUESTED);
6165                 clear_bit(__I40E_DOWN_REQUESTED, &pf->state);
6166         }
6167
6168         /* If there's a recovery already waiting, it takes
6169          * precedence before starting a new reset sequence.
6170          */
6171         if (test_bit(__I40E_RESET_INTR_RECEIVED, &pf->state)) {
6172                 i40e_handle_reset_warning(pf);
6173                 goto unlock;
6174         }
6175
6176         /* If we're already down or resetting, just bail */
6177         if (reset_flags &&
6178             !test_bit(__I40E_DOWN, &pf->state) &&
6179             !test_bit(__I40E_CONFIG_BUSY, &pf->state))
6180                 i40e_do_reset(pf, reset_flags);
6181
6182 unlock:
6183         rtnl_unlock();
6184 }
6185
6186 /**
6187  * i40e_handle_link_event - Handle link event
6188  * @pf: board private structure
6189  * @e: event info posted on ARQ
6190  **/
6191 static void i40e_handle_link_event(struct i40e_pf *pf,
6192                                    struct i40e_arq_event_info *e)
6193 {
6194         struct i40e_aqc_get_link_status *status =
6195                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
6196
6197         /* Do a new status request to re-enable LSE reporting
6198          * and load new status information into the hw struct
6199          * This completely ignores any state information
6200          * in the ARQ event info, instead choosing to always
6201          * issue the AQ update link status command.
6202          */
6203         i40e_link_event(pf);
6204
6205         /* check for unqualified module, if link is down */
6206         if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
6207             (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
6208             (!(status->link_info & I40E_AQ_LINK_UP)))
6209                 dev_err(&pf->pdev->dev,
6210                         "The driver failed to link because an unqualified module was detected.\n");
6211 }
6212
6213 /**
6214  * i40e_clean_adminq_subtask - Clean the AdminQ rings
6215  * @pf: board private structure
6216  **/
6217 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
6218 {
6219         struct i40e_arq_event_info event;
6220         struct i40e_hw *hw = &pf->hw;
6221         u16 pending, i = 0;
6222         i40e_status ret;
6223         u16 opcode;
6224         u32 oldval;
6225         u32 val;
6226
6227         /* Do not run clean AQ when PF reset fails */
6228         if (test_bit(__I40E_RESET_FAILED, &pf->state))
6229                 return;
6230
6231         /* check for error indications */
6232         val = rd32(&pf->hw, pf->hw.aq.arq.len);
6233         oldval = val;
6234         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
6235                 if (hw->debug_mask & I40E_DEBUG_AQ)
6236                         dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
6237                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
6238         }
6239         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
6240                 if (hw->debug_mask & I40E_DEBUG_AQ)
6241                         dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
6242                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
6243                 pf->arq_overflows++;
6244         }
6245         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
6246                 if (hw->debug_mask & I40E_DEBUG_AQ)
6247                         dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
6248                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
6249         }
6250         if (oldval != val)
6251                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
6252
6253         val = rd32(&pf->hw, pf->hw.aq.asq.len);
6254         oldval = val;
6255         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
6256                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6257                         dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
6258                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
6259         }
6260         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
6261                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6262                         dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
6263                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
6264         }
6265         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
6266                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
6267                         dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
6268                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
6269         }
6270         if (oldval != val)
6271                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
6272
6273         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
6274         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
6275         if (!event.msg_buf)
6276                 return;
6277
6278         do {
6279                 ret = i40e_clean_arq_element(hw, &event, &pending);
6280                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
6281                         break;
6282                 else if (ret) {
6283                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
6284                         break;
6285                 }
6286
6287                 opcode = le16_to_cpu(event.desc.opcode);
6288                 switch (opcode) {
6289
6290                 case i40e_aqc_opc_get_link_status:
6291                         i40e_handle_link_event(pf, &event);
6292                         break;
6293                 case i40e_aqc_opc_send_msg_to_pf:
6294                         ret = i40e_vc_process_vf_msg(pf,
6295                                         le16_to_cpu(event.desc.retval),
6296                                         le32_to_cpu(event.desc.cookie_high),
6297                                         le32_to_cpu(event.desc.cookie_low),
6298                                         event.msg_buf,
6299                                         event.msg_len);
6300                         break;
6301                 case i40e_aqc_opc_lldp_update_mib:
6302                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
6303 #ifdef CONFIG_I40E_DCB
6304                         rtnl_lock();
6305                         ret = i40e_handle_lldp_event(pf, &event);
6306                         rtnl_unlock();
6307 #endif /* CONFIG_I40E_DCB */
6308                         break;
6309                 case i40e_aqc_opc_event_lan_overflow:
6310                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
6311                         i40e_handle_lan_overflow_event(pf, &event);
6312                         break;
6313                 case i40e_aqc_opc_send_msg_to_peer:
6314                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
6315                         break;
6316                 case i40e_aqc_opc_nvm_erase:
6317                 case i40e_aqc_opc_nvm_update:
6318                 case i40e_aqc_opc_oem_post_update:
6319                         i40e_debug(&pf->hw, I40E_DEBUG_NVM,
6320                                    "ARQ NVM operation 0x%04x completed\n",
6321                                    opcode);
6322                         break;
6323                 default:
6324                         dev_info(&pf->pdev->dev,
6325                                  "ARQ: Unknown event 0x%04x ignored\n",
6326                                  opcode);
6327                         break;
6328                 }
6329         } while (pending && (i++ < pf->adminq_work_limit));
6330
6331         clear_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state);
6332         /* re-enable Admin queue interrupt cause */
6333         val = rd32(hw, I40E_PFINT_ICR0_ENA);
6334         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
6335         wr32(hw, I40E_PFINT_ICR0_ENA, val);
6336         i40e_flush(hw);
6337
6338         kfree(event.msg_buf);
6339 }
6340
6341 /**
6342  * i40e_verify_eeprom - make sure eeprom is good to use
6343  * @pf: board private structure
6344  **/
6345 static void i40e_verify_eeprom(struct i40e_pf *pf)
6346 {
6347         int err;
6348
6349         err = i40e_diag_eeprom_test(&pf->hw);
6350         if (err) {
6351                 /* retry in case of garbage read */
6352                 err = i40e_diag_eeprom_test(&pf->hw);
6353                 if (err) {
6354                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
6355                                  err);
6356                         set_bit(__I40E_BAD_EEPROM, &pf->state);
6357                 }
6358         }
6359
6360         if (!err && test_bit(__I40E_BAD_EEPROM, &pf->state)) {
6361                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
6362                 clear_bit(__I40E_BAD_EEPROM, &pf->state);
6363         }
6364 }
6365
6366 /**
6367  * i40e_enable_pf_switch_lb
6368  * @pf: pointer to the PF structure
6369  *
6370  * enable switch loop back or die - no point in a return value
6371  **/
6372 static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
6373 {
6374         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6375         struct i40e_vsi_context ctxt;
6376         int ret;
6377
6378         ctxt.seid = pf->main_vsi_seid;
6379         ctxt.pf_num = pf->hw.pf_id;
6380         ctxt.vf_num = 0;
6381         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6382         if (ret) {
6383                 dev_info(&pf->pdev->dev,
6384                          "couldn't get PF vsi config, err %s aq_err %s\n",
6385                          i40e_stat_str(&pf->hw, ret),
6386                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6387                 return;
6388         }
6389         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6390         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6391         ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6392
6393         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6394         if (ret) {
6395                 dev_info(&pf->pdev->dev,
6396                          "update vsi switch failed, err %s aq_err %s\n",
6397                          i40e_stat_str(&pf->hw, ret),
6398                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6399         }
6400 }
6401
6402 /**
6403  * i40e_disable_pf_switch_lb
6404  * @pf: pointer to the PF structure
6405  *
6406  * disable switch loop back or die - no point in a return value
6407  **/
6408 static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
6409 {
6410         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
6411         struct i40e_vsi_context ctxt;
6412         int ret;
6413
6414         ctxt.seid = pf->main_vsi_seid;
6415         ctxt.pf_num = pf->hw.pf_id;
6416         ctxt.vf_num = 0;
6417         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
6418         if (ret) {
6419                 dev_info(&pf->pdev->dev,
6420                          "couldn't get PF vsi config, err %s aq_err %s\n",
6421                          i40e_stat_str(&pf->hw, ret),
6422                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6423                 return;
6424         }
6425         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
6426         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
6427         ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
6428
6429         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
6430         if (ret) {
6431                 dev_info(&pf->pdev->dev,
6432                          "update vsi switch failed, err %s aq_err %s\n",
6433                          i40e_stat_str(&pf->hw, ret),
6434                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6435         }
6436 }
6437
6438 /**
6439  * i40e_config_bridge_mode - Configure the HW bridge mode
6440  * @veb: pointer to the bridge instance
6441  *
6442  * Configure the loop back mode for the LAN VSI that is downlink to the
6443  * specified HW bridge instance. It is expected this function is called
6444  * when a new HW bridge is instantiated.
6445  **/
6446 static void i40e_config_bridge_mode(struct i40e_veb *veb)
6447 {
6448         struct i40e_pf *pf = veb->pf;
6449
6450         if (pf->hw.debug_mask & I40E_DEBUG_LAN)
6451                 dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
6452                          veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
6453         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
6454                 i40e_disable_pf_switch_lb(pf);
6455         else
6456                 i40e_enable_pf_switch_lb(pf);
6457 }
6458
6459 /**
6460  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
6461  * @veb: pointer to the VEB instance
6462  *
6463  * This is a recursive function that first builds the attached VSIs then
6464  * recurses in to build the next layer of VEB.  We track the connections
6465  * through our own index numbers because the seid's from the HW could
6466  * change across the reset.
6467  **/
6468 static int i40e_reconstitute_veb(struct i40e_veb *veb)
6469 {
6470         struct i40e_vsi *ctl_vsi = NULL;
6471         struct i40e_pf *pf = veb->pf;
6472         int v, veb_idx;
6473         int ret;
6474
6475         /* build VSI that owns this VEB, temporarily attached to base VEB */
6476         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
6477                 if (pf->vsi[v] &&
6478                     pf->vsi[v]->veb_idx == veb->idx &&
6479                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
6480                         ctl_vsi = pf->vsi[v];
6481                         break;
6482                 }
6483         }
6484         if (!ctl_vsi) {
6485                 dev_info(&pf->pdev->dev,
6486                          "missing owner VSI for veb_idx %d\n", veb->idx);
6487                 ret = -ENOENT;
6488                 goto end_reconstitute;
6489         }
6490         if (ctl_vsi != pf->vsi[pf->lan_vsi])
6491                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6492         ret = i40e_add_vsi(ctl_vsi);
6493         if (ret) {
6494                 dev_info(&pf->pdev->dev,
6495                          "rebuild of veb_idx %d owner VSI failed: %d\n",
6496                          veb->idx, ret);
6497                 goto end_reconstitute;
6498         }
6499         i40e_vsi_reset_stats(ctl_vsi);
6500
6501         /* create the VEB in the switch and move the VSI onto the VEB */
6502         ret = i40e_add_veb(veb, ctl_vsi);
6503         if (ret)
6504                 goto end_reconstitute;
6505
6506         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
6507                 veb->bridge_mode = BRIDGE_MODE_VEB;
6508         else
6509                 veb->bridge_mode = BRIDGE_MODE_VEPA;
6510         i40e_config_bridge_mode(veb);
6511
6512         /* create the remaining VSIs attached to this VEB */
6513         for (v = 0; v < pf->num_alloc_vsi; v++) {
6514                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
6515                         continue;
6516
6517                 if (pf->vsi[v]->veb_idx == veb->idx) {
6518                         struct i40e_vsi *vsi = pf->vsi[v];
6519
6520                         vsi->uplink_seid = veb->seid;
6521                         ret = i40e_add_vsi(vsi);
6522                         if (ret) {
6523                                 dev_info(&pf->pdev->dev,
6524                                          "rebuild of vsi_idx %d failed: %d\n",
6525                                          v, ret);
6526                                 goto end_reconstitute;
6527                         }
6528                         i40e_vsi_reset_stats(vsi);
6529                 }
6530         }
6531
6532         /* create any VEBs attached to this VEB - RECURSION */
6533         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
6534                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
6535                         pf->veb[veb_idx]->uplink_seid = veb->seid;
6536                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
6537                         if (ret)
6538                                 break;
6539                 }
6540         }
6541
6542 end_reconstitute:
6543         return ret;
6544 }
6545
6546 /**
6547  * i40e_get_capabilities - get info about the HW
6548  * @pf: the PF struct
6549  **/
6550 static int i40e_get_capabilities(struct i40e_pf *pf)
6551 {
6552         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
6553         u16 data_size;
6554         int buf_len;
6555         int err;
6556
6557         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
6558         do {
6559                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
6560                 if (!cap_buf)
6561                         return -ENOMEM;
6562
6563                 /* this loads the data into the hw struct for us */
6564                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
6565                                             &data_size,
6566                                             i40e_aqc_opc_list_func_capabilities,
6567                                             NULL);
6568                 /* data loaded, buffer no longer needed */
6569                 kfree(cap_buf);
6570
6571                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
6572                         /* retry with a larger buffer */
6573                         buf_len = data_size;
6574                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
6575                         dev_info(&pf->pdev->dev,
6576                                  "capability discovery failed, err %s aq_err %s\n",
6577                                  i40e_stat_str(&pf->hw, err),
6578                                  i40e_aq_str(&pf->hw,
6579                                              pf->hw.aq.asq_last_status));
6580                         return -ENODEV;
6581                 }
6582         } while (err);
6583
6584         if (pf->hw.debug_mask & I40E_DEBUG_USER)
6585                 dev_info(&pf->pdev->dev,
6586                          "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",
6587                          pf->hw.pf_id, pf->hw.func_caps.num_vfs,
6588                          pf->hw.func_caps.num_msix_vectors,
6589                          pf->hw.func_caps.num_msix_vectors_vf,
6590                          pf->hw.func_caps.fd_filters_guaranteed,
6591                          pf->hw.func_caps.fd_filters_best_effort,
6592                          pf->hw.func_caps.num_tx_qp,
6593                          pf->hw.func_caps.num_vsis);
6594
6595 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
6596                        + pf->hw.func_caps.num_vfs)
6597         if (pf->hw.revision_id == 0 && (DEF_NUM_VSI > pf->hw.func_caps.num_vsis)) {
6598                 dev_info(&pf->pdev->dev,
6599                          "got num_vsis %d, setting num_vsis to %d\n",
6600                          pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
6601                 pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
6602         }
6603
6604         return 0;
6605 }
6606
6607 static int i40e_vsi_clear(struct i40e_vsi *vsi);
6608
6609 /**
6610  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
6611  * @pf: board private structure
6612  **/
6613 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
6614 {
6615         struct i40e_vsi *vsi;
6616         int i;
6617
6618         /* quick workaround for an NVM issue that leaves a critical register
6619          * uninitialized
6620          */
6621         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
6622                 static const u32 hkey[] = {
6623                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
6624                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
6625                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
6626                         0x95b3a76d};
6627
6628                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
6629                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
6630         }
6631
6632         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
6633                 return;
6634
6635         /* find existing VSI and see if it needs configuring */
6636         vsi = NULL;
6637         for (i = 0; i < pf->num_alloc_vsi; i++) {
6638                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6639                         vsi = pf->vsi[i];
6640                         break;
6641                 }
6642         }
6643
6644         /* create a new VSI if none exists */
6645         if (!vsi) {
6646                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
6647                                      pf->vsi[pf->lan_vsi]->seid, 0);
6648                 if (!vsi) {
6649                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
6650                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
6651                         return;
6652                 }
6653         }
6654
6655         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
6656 }
6657
6658 /**
6659  * i40e_fdir_teardown - release the Flow Director resources
6660  * @pf: board private structure
6661  **/
6662 static void i40e_fdir_teardown(struct i40e_pf *pf)
6663 {
6664         int i;
6665
6666         i40e_fdir_filter_exit(pf);
6667         for (i = 0; i < pf->num_alloc_vsi; i++) {
6668                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
6669                         i40e_vsi_release(pf->vsi[i]);
6670                         break;
6671                 }
6672         }
6673 }
6674
6675 /**
6676  * i40e_prep_for_reset - prep for the core to reset
6677  * @pf: board private structure
6678  *
6679  * Close up the VFs and other things in prep for PF Reset.
6680   **/
6681 static void i40e_prep_for_reset(struct i40e_pf *pf)
6682 {
6683         struct i40e_hw *hw = &pf->hw;
6684         i40e_status ret = 0;
6685         u32 v;
6686
6687         clear_bit(__I40E_RESET_INTR_RECEIVED, &pf->state);
6688         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state))
6689                 return;
6690         if (i40e_check_asq_alive(&pf->hw))
6691                 i40e_vc_notify_reset(pf);
6692
6693         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
6694
6695         /* quiesce the VSIs and their queues that are not already DOWN */
6696         i40e_pf_quiesce_all_vsi(pf);
6697
6698         for (v = 0; v < pf->num_alloc_vsi; v++) {
6699                 if (pf->vsi[v])
6700                         pf->vsi[v]->seid = 0;
6701         }
6702
6703         i40e_shutdown_adminq(&pf->hw);
6704
6705         /* call shutdown HMC */
6706         if (hw->hmc.hmc_obj) {
6707                 ret = i40e_shutdown_lan_hmc(hw);
6708                 if (ret)
6709                         dev_warn(&pf->pdev->dev,
6710                                  "shutdown_lan_hmc failed: %d\n", ret);
6711         }
6712 }
6713
6714 /**
6715  * i40e_send_version - update firmware with driver version
6716  * @pf: PF struct
6717  */
6718 static void i40e_send_version(struct i40e_pf *pf)
6719 {
6720         struct i40e_driver_version dv;
6721
6722         dv.major_version = DRV_VERSION_MAJOR;
6723         dv.minor_version = DRV_VERSION_MINOR;
6724         dv.build_version = DRV_VERSION_BUILD;
6725         dv.subbuild_version = 0;
6726         strlcpy(dv.driver_string, DRV_VERSION, sizeof(dv.driver_string));
6727         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
6728 }
6729
6730 /**
6731  * i40e_reset_and_rebuild - reset and rebuild using a saved config
6732  * @pf: board private structure
6733  * @reinit: if the Main VSI needs to re-initialized.
6734  **/
6735 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit)
6736 {
6737         struct i40e_hw *hw = &pf->hw;
6738         u8 set_fc_aq_fail = 0;
6739         i40e_status ret;
6740         u32 val;
6741         u32 v;
6742
6743         /* Now we wait for GRST to settle out.
6744          * We don't have to delete the VEBs or VSIs from the hw switch
6745          * because the reset will make them disappear.
6746          */
6747         ret = i40e_pf_reset(hw);
6748         if (ret) {
6749                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
6750                 set_bit(__I40E_RESET_FAILED, &pf->state);
6751                 goto clear_recovery;
6752         }
6753         pf->pfr_count++;
6754
6755         if (test_bit(__I40E_DOWN, &pf->state))
6756                 goto clear_recovery;
6757         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
6758
6759         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
6760         ret = i40e_init_adminq(&pf->hw);
6761         if (ret) {
6762                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, err %s aq_err %s\n",
6763                          i40e_stat_str(&pf->hw, ret),
6764                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6765                 goto clear_recovery;
6766         }
6767
6768         /* re-verify the eeprom if we just had an EMP reset */
6769         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, &pf->state))
6770                 i40e_verify_eeprom(pf);
6771
6772         i40e_clear_pxe_mode(hw);
6773         ret = i40e_get_capabilities(pf);
6774         if (ret)
6775                 goto end_core_reset;
6776
6777         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
6778                                 hw->func_caps.num_rx_qp,
6779                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
6780         if (ret) {
6781                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
6782                 goto end_core_reset;
6783         }
6784         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
6785         if (ret) {
6786                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
6787                 goto end_core_reset;
6788         }
6789
6790 #ifdef CONFIG_I40E_DCB
6791         ret = i40e_init_pf_dcb(pf);
6792         if (ret) {
6793                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
6794                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
6795                 /* Continue without DCB enabled */
6796         }
6797 #endif /* CONFIG_I40E_DCB */
6798 #ifdef I40E_FCOE
6799         i40e_init_pf_fcoe(pf);
6800
6801 #endif
6802         /* do basic switch setup */
6803         ret = i40e_setup_pf_switch(pf, reinit);
6804         if (ret)
6805                 goto end_core_reset;
6806
6807         /* The driver only wants link up/down and module qualification
6808          * reports from firmware.  Note the negative logic.
6809          */
6810         ret = i40e_aq_set_phy_int_mask(&pf->hw,
6811                                        ~(I40E_AQ_EVENT_LINK_UPDOWN |
6812                                          I40E_AQ_EVENT_MEDIA_NA |
6813                                          I40E_AQ_EVENT_MODULE_QUAL_FAIL), NULL);
6814         if (ret)
6815                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
6816                          i40e_stat_str(&pf->hw, ret),
6817                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6818
6819         /* make sure our flow control settings are restored */
6820         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
6821         if (ret)
6822                 dev_dbg(&pf->pdev->dev, "setting flow control: ret = %s last_status = %s\n",
6823                         i40e_stat_str(&pf->hw, ret),
6824                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6825
6826         /* Rebuild the VSIs and VEBs that existed before reset.
6827          * They are still in our local switch element arrays, so only
6828          * need to rebuild the switch model in the HW.
6829          *
6830          * If there were VEBs but the reconstitution failed, we'll try
6831          * try to recover minimal use by getting the basic PF VSI working.
6832          */
6833         if (pf->vsi[pf->lan_vsi]->uplink_seid != pf->mac_seid) {
6834                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
6835                 /* find the one VEB connected to the MAC, and find orphans */
6836                 for (v = 0; v < I40E_MAX_VEB; v++) {
6837                         if (!pf->veb[v])
6838                                 continue;
6839
6840                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
6841                             pf->veb[v]->uplink_seid == 0) {
6842                                 ret = i40e_reconstitute_veb(pf->veb[v]);
6843
6844                                 if (!ret)
6845                                         continue;
6846
6847                                 /* If Main VEB failed, we're in deep doodoo,
6848                                  * so give up rebuilding the switch and set up
6849                                  * for minimal rebuild of PF VSI.
6850                                  * If orphan failed, we'll report the error
6851                                  * but try to keep going.
6852                                  */
6853                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
6854                                         dev_info(&pf->pdev->dev,
6855                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
6856                                                  ret);
6857                                         pf->vsi[pf->lan_vsi]->uplink_seid
6858                                                                 = pf->mac_seid;
6859                                         break;
6860                                 } else if (pf->veb[v]->uplink_seid == 0) {
6861                                         dev_info(&pf->pdev->dev,
6862                                                  "rebuild of orphan VEB failed: %d\n",
6863                                                  ret);
6864                                 }
6865                         }
6866                 }
6867         }
6868
6869         if (pf->vsi[pf->lan_vsi]->uplink_seid == pf->mac_seid) {
6870                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
6871                 /* no VEB, so rebuild only the Main VSI */
6872                 ret = i40e_add_vsi(pf->vsi[pf->lan_vsi]);
6873                 if (ret) {
6874                         dev_info(&pf->pdev->dev,
6875                                  "rebuild of Main VSI failed: %d\n", ret);
6876                         goto end_core_reset;
6877                 }
6878         }
6879
6880         /* Reconfigure hardware for allowing smaller MSS in the case
6881          * of TSO, so that we avoid the MDD being fired and causing
6882          * a reset in the case of small MSS+TSO.
6883          */
6884 #define I40E_REG_MSS          0x000E64DC
6885 #define I40E_REG_MSS_MIN_MASK 0x3FF0000
6886 #define I40E_64BYTE_MSS       0x400000
6887         val = rd32(hw, I40E_REG_MSS);
6888         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
6889                 val &= ~I40E_REG_MSS_MIN_MASK;
6890                 val |= I40E_64BYTE_MSS;
6891                 wr32(hw, I40E_REG_MSS, val);
6892         }
6893
6894         if (pf->flags & I40E_FLAG_RESTART_AUTONEG) {
6895                 msleep(75);
6896                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
6897                 if (ret)
6898                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
6899                                  i40e_stat_str(&pf->hw, ret),
6900                                  i40e_aq_str(&pf->hw,
6901                                              pf->hw.aq.asq_last_status));
6902         }
6903         /* reinit the misc interrupt */
6904         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6905                 ret = i40e_setup_misc_vector(pf);
6906
6907         /* Add a filter to drop all Flow control frames from any VSI from being
6908          * transmitted. By doing so we stop a malicious VF from sending out
6909          * PAUSE or PFC frames and potentially controlling traffic for other
6910          * PF/VF VSIs.
6911          * The FW can still send Flow control frames if enabled.
6912          */
6913         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
6914                                                        pf->main_vsi_seid);
6915
6916         /* restart the VSIs that were rebuilt and running before the reset */
6917         i40e_pf_unquiesce_all_vsi(pf);
6918
6919         if (pf->num_alloc_vfs) {
6920                 for (v = 0; v < pf->num_alloc_vfs; v++)
6921                         i40e_reset_vf(&pf->vf[v], true);
6922         }
6923
6924         /* tell the firmware that we're starting */
6925         i40e_send_version(pf);
6926
6927 end_core_reset:
6928         clear_bit(__I40E_RESET_FAILED, &pf->state);
6929 clear_recovery:
6930         clear_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state);
6931 }
6932
6933 /**
6934  * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
6935  * @pf: board private structure
6936  *
6937  * Close up the VFs and other things in prep for a Core Reset,
6938  * then get ready to rebuild the world.
6939  **/
6940 static void i40e_handle_reset_warning(struct i40e_pf *pf)
6941 {
6942         i40e_prep_for_reset(pf);
6943         i40e_reset_and_rebuild(pf, false);
6944 }
6945
6946 /**
6947  * i40e_handle_mdd_event
6948  * @pf: pointer to the PF structure
6949  *
6950  * Called from the MDD irq handler to identify possibly malicious vfs
6951  **/
6952 static void i40e_handle_mdd_event(struct i40e_pf *pf)
6953 {
6954         struct i40e_hw *hw = &pf->hw;
6955         bool mdd_detected = false;
6956         bool pf_mdd_detected = false;
6957         struct i40e_vf *vf;
6958         u32 reg;
6959         int i;
6960
6961         if (!test_bit(__I40E_MDD_EVENT_PENDING, &pf->state))
6962                 return;
6963
6964         /* find what triggered the MDD event */
6965         reg = rd32(hw, I40E_GL_MDET_TX);
6966         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
6967                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
6968                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
6969                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
6970                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
6971                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
6972                                 I40E_GL_MDET_TX_EVENT_SHIFT;
6973                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
6974                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
6975                                 pf->hw.func_caps.base_queue;
6976                 if (netif_msg_tx_err(pf))
6977                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
6978                                  event, queue, pf_num, vf_num);
6979                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
6980                 mdd_detected = true;
6981         }
6982         reg = rd32(hw, I40E_GL_MDET_RX);
6983         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
6984                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
6985                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
6986                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
6987                                 I40E_GL_MDET_RX_EVENT_SHIFT;
6988                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
6989                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
6990                                 pf->hw.func_caps.base_queue;
6991                 if (netif_msg_rx_err(pf))
6992                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
6993                                  event, queue, func);
6994                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
6995                 mdd_detected = true;
6996         }
6997
6998         if (mdd_detected) {
6999                 reg = rd32(hw, I40E_PF_MDET_TX);
7000                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
7001                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
7002                         dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n");
7003                         pf_mdd_detected = true;
7004                 }
7005                 reg = rd32(hw, I40E_PF_MDET_RX);
7006                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
7007                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
7008                         dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n");
7009                         pf_mdd_detected = true;
7010                 }
7011                 /* Queue belongs to the PF, initiate a reset */
7012                 if (pf_mdd_detected) {
7013                         set_bit(__I40E_PF_RESET_REQUESTED, &pf->state);
7014                         i40e_service_event_schedule(pf);
7015                 }
7016         }
7017
7018         /* see if one of the VFs needs its hand slapped */
7019         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
7020                 vf = &(pf->vf[i]);
7021                 reg = rd32(hw, I40E_VP_MDET_TX(i));
7022                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
7023                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
7024                         vf->num_mdd_events++;
7025                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
7026                                  i);
7027                 }
7028
7029                 reg = rd32(hw, I40E_VP_MDET_RX(i));
7030                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
7031                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
7032                         vf->num_mdd_events++;
7033                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
7034                                  i);
7035                 }
7036
7037                 if (vf->num_mdd_events > I40E_DEFAULT_NUM_MDD_EVENTS_ALLOWED) {
7038                         dev_info(&pf->pdev->dev,
7039                                  "Too many MDD events on VF %d, disabled\n", i);
7040                         dev_info(&pf->pdev->dev,
7041                                  "Use PF Control I/F to re-enable the VF\n");
7042                         set_bit(I40E_VF_STAT_DISABLED, &vf->vf_states);
7043                 }
7044         }
7045
7046         /* re-enable mdd interrupt cause */
7047         clear_bit(__I40E_MDD_EVENT_PENDING, &pf->state);
7048         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
7049         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
7050         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
7051         i40e_flush(hw);
7052 }
7053
7054 /**
7055  * i40e_sync_udp_filters_subtask - Sync the VSI filter list with HW
7056  * @pf: board private structure
7057  **/
7058 static void i40e_sync_udp_filters_subtask(struct i40e_pf *pf)
7059 {
7060 #if IS_ENABLED(CONFIG_VXLAN) || IS_ENABLED(CONFIG_GENEVE)
7061         struct i40e_hw *hw = &pf->hw;
7062         i40e_status ret;
7063         __be16 port;
7064         int i;
7065
7066         if (!(pf->flags & I40E_FLAG_UDP_FILTER_SYNC))
7067                 return;
7068
7069         pf->flags &= ~I40E_FLAG_UDP_FILTER_SYNC;
7070
7071         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
7072                 if (pf->pending_udp_bitmap & BIT_ULL(i)) {
7073                         pf->pending_udp_bitmap &= ~BIT_ULL(i);
7074                         port = pf->udp_ports[i].index;
7075                         if (port)
7076                                 ret = i40e_aq_add_udp_tunnel(hw, ntohs(port),
7077                                                      pf->udp_ports[i].type,
7078                                                      NULL, NULL);
7079                         else
7080                                 ret = i40e_aq_del_udp_tunnel(hw, i, NULL);
7081
7082                         if (ret) {
7083                                 dev_dbg(&pf->pdev->dev,
7084                                         "%s %s port %d, index %d failed, err %s aq_err %s\n",
7085                                         pf->udp_ports[i].type ? "vxlan" : "geneve",
7086                                         port ? "add" : "delete",
7087                                         ntohs(port), i,
7088                                         i40e_stat_str(&pf->hw, ret),
7089                                         i40e_aq_str(&pf->hw,
7090                                                     pf->hw.aq.asq_last_status));
7091                                 pf->udp_ports[i].index = 0;
7092                         }
7093                 }
7094         }
7095 #endif
7096 }
7097
7098 /**
7099  * i40e_service_task - Run the driver's async subtasks
7100  * @work: pointer to work_struct containing our data
7101  **/
7102 static void i40e_service_task(struct work_struct *work)
7103 {
7104         struct i40e_pf *pf = container_of(work,
7105                                           struct i40e_pf,
7106                                           service_task);
7107         unsigned long start_time = jiffies;
7108
7109         /* don't bother with service tasks if a reset is in progress */
7110         if (test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7111                 i40e_service_event_complete(pf);
7112                 return;
7113         }
7114
7115         i40e_detect_recover_hung(pf);
7116         i40e_sync_filters_subtask(pf);
7117         i40e_reset_subtask(pf);
7118         i40e_handle_mdd_event(pf);
7119         i40e_vc_process_vflr_event(pf);
7120         i40e_watchdog_subtask(pf);
7121         i40e_fdir_reinit_subtask(pf);
7122         i40e_client_subtask(pf);
7123         i40e_sync_filters_subtask(pf);
7124         i40e_sync_udp_filters_subtask(pf);
7125         i40e_clean_adminq_subtask(pf);
7126
7127         i40e_service_event_complete(pf);
7128
7129         /* If the tasks have taken longer than one timer cycle or there
7130          * is more work to be done, reschedule the service task now
7131          * rather than wait for the timer to tick again.
7132          */
7133         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
7134             test_bit(__I40E_ADMINQ_EVENT_PENDING, &pf->state)            ||
7135             test_bit(__I40E_MDD_EVENT_PENDING, &pf->state)               ||
7136             test_bit(__I40E_VFLR_EVENT_PENDING, &pf->state))
7137                 i40e_service_event_schedule(pf);
7138 }
7139
7140 /**
7141  * i40e_service_timer - timer callback
7142  * @data: pointer to PF struct
7143  **/
7144 static void i40e_service_timer(unsigned long data)
7145 {
7146         struct i40e_pf *pf = (struct i40e_pf *)data;
7147
7148         mod_timer(&pf->service_timer,
7149                   round_jiffies(jiffies + pf->service_timer_period));
7150         i40e_service_event_schedule(pf);
7151 }
7152
7153 /**
7154  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
7155  * @vsi: the VSI being configured
7156  **/
7157 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
7158 {
7159         struct i40e_pf *pf = vsi->back;
7160
7161         switch (vsi->type) {
7162         case I40E_VSI_MAIN:
7163                 vsi->alloc_queue_pairs = pf->num_lan_qps;
7164                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7165                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7166                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7167                         vsi->num_q_vectors = pf->num_lan_msix;
7168                 else
7169                         vsi->num_q_vectors = 1;
7170
7171                 break;
7172
7173         case I40E_VSI_FDIR:
7174                 vsi->alloc_queue_pairs = 1;
7175                 vsi->num_desc = ALIGN(I40E_FDIR_RING_COUNT,
7176                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7177                 vsi->num_q_vectors = 1;
7178                 break;
7179
7180         case I40E_VSI_VMDQ2:
7181                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
7182                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7183                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7184                 vsi->num_q_vectors = pf->num_vmdq_msix;
7185                 break;
7186
7187         case I40E_VSI_SRIOV:
7188                 vsi->alloc_queue_pairs = pf->num_vf_qps;
7189                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7190                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7191                 break;
7192
7193 #ifdef I40E_FCOE
7194         case I40E_VSI_FCOE:
7195                 vsi->alloc_queue_pairs = pf->num_fcoe_qps;
7196                 vsi->num_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
7197                                       I40E_REQ_DESCRIPTOR_MULTIPLE);
7198                 vsi->num_q_vectors = pf->num_fcoe_msix;
7199                 break;
7200
7201 #endif /* I40E_FCOE */
7202         default:
7203                 WARN_ON(1);
7204                 return -ENODATA;
7205         }
7206
7207         return 0;
7208 }
7209
7210 /**
7211  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
7212  * @type: VSI pointer
7213  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
7214  *
7215  * On error: returns error code (negative)
7216  * On success: returns 0
7217  **/
7218 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
7219 {
7220         int size;
7221         int ret = 0;
7222
7223         /* allocate memory for both Tx and Rx ring pointers */
7224         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs * 2;
7225         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
7226         if (!vsi->tx_rings)
7227                 return -ENOMEM;
7228         vsi->rx_rings = &vsi->tx_rings[vsi->alloc_queue_pairs];
7229
7230         if (alloc_qvectors) {
7231                 /* allocate memory for q_vector pointers */
7232                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
7233                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
7234                 if (!vsi->q_vectors) {
7235                         ret = -ENOMEM;
7236                         goto err_vectors;
7237                 }
7238         }
7239         return ret;
7240
7241 err_vectors:
7242         kfree(vsi->tx_rings);
7243         return ret;
7244 }
7245
7246 /**
7247  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
7248  * @pf: board private structure
7249  * @type: type of VSI
7250  *
7251  * On error: returns error code (negative)
7252  * On success: returns vsi index in PF (positive)
7253  **/
7254 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
7255 {
7256         int ret = -ENODEV;
7257         struct i40e_vsi *vsi;
7258         int vsi_idx;
7259         int i;
7260
7261         /* Need to protect the allocation of the VSIs at the PF level */
7262         mutex_lock(&pf->switch_mutex);
7263
7264         /* VSI list may be fragmented if VSI creation/destruction has
7265          * been happening.  We can afford to do a quick scan to look
7266          * for any free VSIs in the list.
7267          *
7268          * find next empty vsi slot, looping back around if necessary
7269          */
7270         i = pf->next_vsi;
7271         while (i < pf->num_alloc_vsi && pf->vsi[i])
7272                 i++;
7273         if (i >= pf->num_alloc_vsi) {
7274                 i = 0;
7275                 while (i < pf->next_vsi && pf->vsi[i])
7276                         i++;
7277         }
7278
7279         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
7280                 vsi_idx = i;             /* Found one! */
7281         } else {
7282                 ret = -ENODEV;
7283                 goto unlock_pf;  /* out of VSI slots! */
7284         }
7285         pf->next_vsi = ++i;
7286
7287         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
7288         if (!vsi) {
7289                 ret = -ENOMEM;
7290                 goto unlock_pf;
7291         }
7292         vsi->type = type;
7293         vsi->back = pf;
7294         set_bit(__I40E_DOWN, &vsi->state);
7295         vsi->flags = 0;
7296         vsi->idx = vsi_idx;
7297         vsi->int_rate_limit = 0;
7298         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
7299                                 pf->rss_table_size : 64;
7300         vsi->netdev_registered = false;
7301         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
7302         INIT_LIST_HEAD(&vsi->mac_filter_list);
7303         vsi->irqs_ready = false;
7304
7305         ret = i40e_set_num_rings_in_vsi(vsi);
7306         if (ret)
7307                 goto err_rings;
7308
7309         ret = i40e_vsi_alloc_arrays(vsi, true);
7310         if (ret)
7311                 goto err_rings;
7312
7313         /* Setup default MSIX irq handler for VSI */
7314         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
7315
7316         /* Initialize VSI lock */
7317         spin_lock_init(&vsi->mac_filter_list_lock);
7318         pf->vsi[vsi_idx] = vsi;
7319         ret = vsi_idx;
7320         goto unlock_pf;
7321
7322 err_rings:
7323         pf->next_vsi = i - 1;
7324         kfree(vsi);
7325 unlock_pf:
7326         mutex_unlock(&pf->switch_mutex);
7327         return ret;
7328 }
7329
7330 /**
7331  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
7332  * @type: VSI pointer
7333  * @free_qvectors: a bool to specify if q_vectors need to be freed.
7334  *
7335  * On error: returns error code (negative)
7336  * On success: returns 0
7337  **/
7338 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
7339 {
7340         /* free the ring and vector containers */
7341         if (free_qvectors) {
7342                 kfree(vsi->q_vectors);
7343                 vsi->q_vectors = NULL;
7344         }
7345         kfree(vsi->tx_rings);
7346         vsi->tx_rings = NULL;
7347         vsi->rx_rings = NULL;
7348 }
7349
7350 /**
7351  * i40e_clear_rss_config_user - clear the user configured RSS hash keys
7352  * and lookup table
7353  * @vsi: Pointer to VSI structure
7354  */
7355 static void i40e_clear_rss_config_user(struct i40e_vsi *vsi)
7356 {
7357         if (!vsi)
7358                 return;
7359
7360         kfree(vsi->rss_hkey_user);
7361         vsi->rss_hkey_user = NULL;
7362
7363         kfree(vsi->rss_lut_user);
7364         vsi->rss_lut_user = NULL;
7365 }
7366
7367 /**
7368  * i40e_vsi_clear - Deallocate the VSI provided
7369  * @vsi: the VSI being un-configured
7370  **/
7371 static int i40e_vsi_clear(struct i40e_vsi *vsi)
7372 {
7373         struct i40e_pf *pf;
7374
7375         if (!vsi)
7376                 return 0;
7377
7378         if (!vsi->back)
7379                 goto free_vsi;
7380         pf = vsi->back;
7381
7382         mutex_lock(&pf->switch_mutex);
7383         if (!pf->vsi[vsi->idx]) {
7384                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](%p,type %d)\n",
7385                         vsi->idx, vsi->idx, vsi, vsi->type);
7386                 goto unlock_vsi;
7387         }
7388
7389         if (pf->vsi[vsi->idx] != vsi) {
7390                 dev_err(&pf->pdev->dev,
7391                         "pf->vsi[%d](%p, type %d) != vsi[%d](%p,type %d): no free!\n",
7392                         pf->vsi[vsi->idx]->idx,
7393                         pf->vsi[vsi->idx],
7394                         pf->vsi[vsi->idx]->type,
7395                         vsi->idx, vsi, vsi->type);
7396                 goto unlock_vsi;
7397         }
7398
7399         /* updates the PF for this cleared vsi */
7400         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
7401         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
7402
7403         i40e_vsi_free_arrays(vsi, true);
7404         i40e_clear_rss_config_user(vsi);
7405
7406         pf->vsi[vsi->idx] = NULL;
7407         if (vsi->idx < pf->next_vsi)
7408                 pf->next_vsi = vsi->idx;
7409
7410 unlock_vsi:
7411         mutex_unlock(&pf->switch_mutex);
7412 free_vsi:
7413         kfree(vsi);
7414
7415         return 0;
7416 }
7417
7418 /**
7419  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
7420  * @vsi: the VSI being cleaned
7421  **/
7422 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
7423 {
7424         int i;
7425
7426         if (vsi->tx_rings && vsi->tx_rings[0]) {
7427                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7428                         kfree_rcu(vsi->tx_rings[i], rcu);
7429                         vsi->tx_rings[i] = NULL;
7430                         vsi->rx_rings[i] = NULL;
7431                 }
7432         }
7433 }
7434
7435 /**
7436  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
7437  * @vsi: the VSI being configured
7438  **/
7439 static int i40e_alloc_rings(struct i40e_vsi *vsi)
7440 {
7441         struct i40e_ring *tx_ring, *rx_ring;
7442         struct i40e_pf *pf = vsi->back;
7443         int i;
7444
7445         /* Set basic values in the rings to be used later during open() */
7446         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
7447                 /* allocate space for both Tx and Rx in one shot */
7448                 tx_ring = kzalloc(sizeof(struct i40e_ring) * 2, GFP_KERNEL);
7449                 if (!tx_ring)
7450                         goto err_out;
7451
7452                 tx_ring->queue_index = i;
7453                 tx_ring->reg_idx = vsi->base_queue + i;
7454                 tx_ring->ring_active = false;
7455                 tx_ring->vsi = vsi;
7456                 tx_ring->netdev = vsi->netdev;
7457                 tx_ring->dev = &pf->pdev->dev;
7458                 tx_ring->count = vsi->num_desc;
7459                 tx_ring->size = 0;
7460                 tx_ring->dcb_tc = 0;
7461                 if (vsi->back->flags & I40E_FLAG_WB_ON_ITR_CAPABLE)
7462                         tx_ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
7463                 tx_ring->tx_itr_setting = pf->tx_itr_default;
7464                 vsi->tx_rings[i] = tx_ring;
7465
7466                 rx_ring = &tx_ring[1];
7467                 rx_ring->queue_index = i;
7468                 rx_ring->reg_idx = vsi->base_queue + i;
7469                 rx_ring->ring_active = false;
7470                 rx_ring->vsi = vsi;
7471                 rx_ring->netdev = vsi->netdev;
7472                 rx_ring->dev = &pf->pdev->dev;
7473                 rx_ring->count = vsi->num_desc;
7474                 rx_ring->size = 0;
7475                 rx_ring->dcb_tc = 0;
7476                 rx_ring->rx_itr_setting = pf->rx_itr_default;
7477                 vsi->rx_rings[i] = rx_ring;
7478         }
7479
7480         return 0;
7481
7482 err_out:
7483         i40e_vsi_clear_rings(vsi);
7484         return -ENOMEM;
7485 }
7486
7487 /**
7488  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
7489  * @pf: board private structure
7490  * @vectors: the number of MSI-X vectors to request
7491  *
7492  * Returns the number of vectors reserved, or error
7493  **/
7494 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
7495 {
7496         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
7497                                         I40E_MIN_MSIX, vectors);
7498         if (vectors < 0) {
7499                 dev_info(&pf->pdev->dev,
7500                          "MSI-X vector reservation failed: %d\n", vectors);
7501                 vectors = 0;
7502         }
7503
7504         return vectors;
7505 }
7506
7507 /**
7508  * i40e_init_msix - Setup the MSIX capability
7509  * @pf: board private structure
7510  *
7511  * Work with the OS to set up the MSIX vectors needed.
7512  *
7513  * Returns the number of vectors reserved or negative on failure
7514  **/
7515 static int i40e_init_msix(struct i40e_pf *pf)
7516 {
7517         struct i40e_hw *hw = &pf->hw;
7518         int vectors_left;
7519         int v_budget, i;
7520         int v_actual;
7521         int iwarp_requested = 0;
7522
7523         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
7524                 return -ENODEV;
7525
7526         /* The number of vectors we'll request will be comprised of:
7527          *   - Add 1 for "other" cause for Admin Queue events, etc.
7528          *   - The number of LAN queue pairs
7529          *      - Queues being used for RSS.
7530          *              We don't need as many as max_rss_size vectors.
7531          *              use rss_size instead in the calculation since that
7532          *              is governed by number of cpus in the system.
7533          *      - assumes symmetric Tx/Rx pairing
7534          *   - The number of VMDq pairs
7535          *   - The CPU count within the NUMA node if iWARP is enabled
7536 #ifdef I40E_FCOE
7537          *   - The number of FCOE qps.
7538 #endif
7539          * Once we count this up, try the request.
7540          *
7541          * If we can't get what we want, we'll simplify to nearly nothing
7542          * and try again.  If that still fails, we punt.
7543          */
7544         vectors_left = hw->func_caps.num_msix_vectors;
7545         v_budget = 0;
7546
7547         /* reserve one vector for miscellaneous handler */
7548         if (vectors_left) {
7549                 v_budget++;
7550                 vectors_left--;
7551         }
7552
7553         /* reserve vectors for the main PF traffic queues */
7554         pf->num_lan_msix = min_t(int, num_online_cpus(), vectors_left);
7555         vectors_left -= pf->num_lan_msix;
7556         v_budget += pf->num_lan_msix;
7557
7558         /* reserve one vector for sideband flow director */
7559         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
7560                 if (vectors_left) {
7561                         v_budget++;
7562                         vectors_left--;
7563                 } else {
7564                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7565                 }
7566         }
7567
7568 #ifdef I40E_FCOE
7569         /* can we reserve enough for FCoE? */
7570         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7571                 if (!vectors_left)
7572                         pf->num_fcoe_msix = 0;
7573                 else if (vectors_left >= pf->num_fcoe_qps)
7574                         pf->num_fcoe_msix = pf->num_fcoe_qps;
7575                 else
7576                         pf->num_fcoe_msix = 1;
7577                 v_budget += pf->num_fcoe_msix;
7578                 vectors_left -= pf->num_fcoe_msix;
7579         }
7580
7581 #endif
7582         /* can we reserve enough for iWARP? */
7583         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
7584                 if (!vectors_left)
7585                         pf->num_iwarp_msix = 0;
7586                 else if (vectors_left < pf->num_iwarp_msix)
7587                         pf->num_iwarp_msix = 1;
7588                 v_budget += pf->num_iwarp_msix;
7589                 vectors_left -= pf->num_iwarp_msix;
7590         }
7591
7592         /* any vectors left over go for VMDq support */
7593         if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
7594                 int vmdq_vecs_wanted = pf->num_vmdq_vsis * pf->num_vmdq_qps;
7595                 int vmdq_vecs = min_t(int, vectors_left, vmdq_vecs_wanted);
7596
7597                 /* if we're short on vectors for what's desired, we limit
7598                  * the queues per vmdq.  If this is still more than are
7599                  * available, the user will need to change the number of
7600                  * queues/vectors used by the PF later with the ethtool
7601                  * channels command
7602                  */
7603                 if (vmdq_vecs < vmdq_vecs_wanted)
7604                         pf->num_vmdq_qps = 1;
7605                 pf->num_vmdq_msix = pf->num_vmdq_qps;
7606
7607                 v_budget += vmdq_vecs;
7608                 vectors_left -= vmdq_vecs;
7609         }
7610
7611         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
7612                                    GFP_KERNEL);
7613         if (!pf->msix_entries)
7614                 return -ENOMEM;
7615
7616         for (i = 0; i < v_budget; i++)
7617                 pf->msix_entries[i].entry = i;
7618         v_actual = i40e_reserve_msix_vectors(pf, v_budget);
7619
7620         if (v_actual != v_budget) {
7621                 /* If we have limited resources, we will start with no vectors
7622                  * for the special features and then allocate vectors to some
7623                  * of these features based on the policy and at the end disable
7624                  * the features that did not get any vectors.
7625                  */
7626                 iwarp_requested = pf->num_iwarp_msix;
7627                 pf->num_iwarp_msix = 0;
7628 #ifdef I40E_FCOE
7629                 pf->num_fcoe_qps = 0;
7630                 pf->num_fcoe_msix = 0;
7631 #endif
7632                 pf->num_vmdq_msix = 0;
7633         }
7634
7635         if (v_actual < I40E_MIN_MSIX) {
7636                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
7637                 kfree(pf->msix_entries);
7638                 pf->msix_entries = NULL;
7639                 return -ENODEV;
7640
7641         } else if (v_actual == I40E_MIN_MSIX) {
7642                 /* Adjust for minimal MSIX use */
7643                 pf->num_vmdq_vsis = 0;
7644                 pf->num_vmdq_qps = 0;
7645                 pf->num_lan_qps = 1;
7646                 pf->num_lan_msix = 1;
7647
7648         } else if (v_actual != v_budget) {
7649                 int vec;
7650
7651                 /* reserve the misc vector */
7652                 vec = v_actual - 1;
7653
7654                 /* Scale vector usage down */
7655                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
7656                 pf->num_vmdq_vsis = 1;
7657                 pf->num_vmdq_qps = 1;
7658                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
7659
7660                 /* partition out the remaining vectors */
7661                 switch (vec) {
7662                 case 2:
7663                         pf->num_lan_msix = 1;
7664                         break;
7665                 case 3:
7666                         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
7667                                 pf->num_lan_msix = 1;
7668                                 pf->num_iwarp_msix = 1;
7669                         } else {
7670                                 pf->num_lan_msix = 2;
7671                         }
7672 #ifdef I40E_FCOE
7673                         /* give one vector to FCoE */
7674                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7675                                 pf->num_lan_msix = 1;
7676                                 pf->num_fcoe_msix = 1;
7677                         }
7678 #endif
7679                         break;
7680                 default:
7681                         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
7682                                 pf->num_iwarp_msix = min_t(int, (vec / 3),
7683                                                  iwarp_requested);
7684                                 pf->num_vmdq_vsis = min_t(int, (vec / 3),
7685                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
7686                         } else {
7687                                 pf->num_vmdq_vsis = min_t(int, (vec / 2),
7688                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
7689                         }
7690                         pf->num_lan_msix = min_t(int,
7691                                (vec - (pf->num_iwarp_msix + pf->num_vmdq_vsis)),
7692                                                               pf->num_lan_msix);
7693 #ifdef I40E_FCOE
7694                         /* give one vector to FCoE */
7695                         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
7696                                 pf->num_fcoe_msix = 1;
7697                                 vec--;
7698                         }
7699 #endif
7700                         break;
7701                 }
7702         }
7703
7704         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
7705             (pf->num_vmdq_msix == 0)) {
7706                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
7707                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
7708         }
7709
7710         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
7711             (pf->num_iwarp_msix == 0)) {
7712                 dev_info(&pf->pdev->dev, "IWARP disabled, not enough MSI-X vectors\n");
7713                 pf->flags &= ~I40E_FLAG_IWARP_ENABLED;
7714         }
7715 #ifdef I40E_FCOE
7716
7717         if ((pf->flags & I40E_FLAG_FCOE_ENABLED) && (pf->num_fcoe_msix == 0)) {
7718                 dev_info(&pf->pdev->dev, "FCOE disabled, not enough MSI-X vectors\n");
7719                 pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
7720         }
7721 #endif
7722         return v_actual;
7723 }
7724
7725 /**
7726  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
7727  * @vsi: the VSI being configured
7728  * @v_idx: index of the vector in the vsi struct
7729  *
7730  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
7731  **/
7732 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx)
7733 {
7734         struct i40e_q_vector *q_vector;
7735
7736         /* allocate q_vector */
7737         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
7738         if (!q_vector)
7739                 return -ENOMEM;
7740
7741         q_vector->vsi = vsi;
7742         q_vector->v_idx = v_idx;
7743         cpumask_set_cpu(v_idx, &q_vector->affinity_mask);
7744         if (vsi->netdev)
7745                 netif_napi_add(vsi->netdev, &q_vector->napi,
7746                                i40e_napi_poll, NAPI_POLL_WEIGHT);
7747
7748         q_vector->rx.latency_range = I40E_LOW_LATENCY;
7749         q_vector->tx.latency_range = I40E_LOW_LATENCY;
7750
7751         /* tie q_vector and vsi together */
7752         vsi->q_vectors[v_idx] = q_vector;
7753
7754         return 0;
7755 }
7756
7757 /**
7758  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
7759  * @vsi: the VSI being configured
7760  *
7761  * We allocate one q_vector per queue interrupt.  If allocation fails we
7762  * return -ENOMEM.
7763  **/
7764 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
7765 {
7766         struct i40e_pf *pf = vsi->back;
7767         int v_idx, num_q_vectors;
7768         int err;
7769
7770         /* if not MSIX, give the one vector only to the LAN VSI */
7771         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
7772                 num_q_vectors = vsi->num_q_vectors;
7773         else if (vsi == pf->vsi[pf->lan_vsi])
7774                 num_q_vectors = 1;
7775         else
7776                 return -EINVAL;
7777
7778         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
7779                 err = i40e_vsi_alloc_q_vector(vsi, v_idx);
7780                 if (err)
7781                         goto err_out;
7782         }
7783
7784         return 0;
7785
7786 err_out:
7787         while (v_idx--)
7788                 i40e_free_q_vector(vsi, v_idx);
7789
7790         return err;
7791 }
7792
7793 /**
7794  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
7795  * @pf: board private structure to initialize
7796  **/
7797 static int i40e_init_interrupt_scheme(struct i40e_pf *pf)
7798 {
7799         int vectors = 0;
7800         ssize_t size;
7801
7802         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
7803                 vectors = i40e_init_msix(pf);
7804                 if (vectors < 0) {
7805                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
7806                                        I40E_FLAG_IWARP_ENABLED  |
7807 #ifdef I40E_FCOE
7808                                        I40E_FLAG_FCOE_ENABLED   |
7809 #endif
7810                                        I40E_FLAG_RSS_ENABLED    |
7811                                        I40E_FLAG_DCB_CAPABLE    |
7812                                        I40E_FLAG_SRIOV_ENABLED  |
7813                                        I40E_FLAG_FD_SB_ENABLED  |
7814                                        I40E_FLAG_FD_ATR_ENABLED |
7815                                        I40E_FLAG_VMDQ_ENABLED);
7816
7817                         /* rework the queue expectations without MSIX */
7818                         i40e_determine_queue_usage(pf);
7819                 }
7820         }
7821
7822         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
7823             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
7824                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
7825                 vectors = pci_enable_msi(pf->pdev);
7826                 if (vectors < 0) {
7827                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
7828                                  vectors);
7829                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
7830                 }
7831                 vectors = 1;  /* one MSI or Legacy vector */
7832         }
7833
7834         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
7835                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
7836
7837         /* set up vector assignment tracking */
7838         size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
7839         pf->irq_pile = kzalloc(size, GFP_KERNEL);
7840         if (!pf->irq_pile) {
7841                 dev_err(&pf->pdev->dev, "error allocating irq_pile memory\n");
7842                 return -ENOMEM;
7843         }
7844         pf->irq_pile->num_entries = vectors;
7845         pf->irq_pile->search_hint = 0;
7846
7847         /* track first vector for misc interrupts, ignore return */
7848         (void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
7849
7850         return 0;
7851 }
7852
7853 /**
7854  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
7855  * @pf: board private structure
7856  *
7857  * This sets up the handler for MSIX 0, which is used to manage the
7858  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
7859  * when in MSI or Legacy interrupt mode.
7860  **/
7861 static int i40e_setup_misc_vector(struct i40e_pf *pf)
7862 {
7863         struct i40e_hw *hw = &pf->hw;
7864         int err = 0;
7865
7866         /* Only request the irq if this is the first time through, and
7867          * not when we're rebuilding after a Reset
7868          */
7869         if (!test_bit(__I40E_RESET_RECOVERY_PENDING, &pf->state)) {
7870                 err = request_irq(pf->msix_entries[0].vector,
7871                                   i40e_intr, 0, pf->int_name, pf);
7872                 if (err) {
7873                         dev_info(&pf->pdev->dev,
7874                                  "request_irq for %s failed: %d\n",
7875                                  pf->int_name, err);
7876                         return -EFAULT;
7877                 }
7878         }
7879
7880         i40e_enable_misc_int_causes(pf);
7881
7882         /* associate no queues to the misc vector */
7883         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
7884         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K);
7885
7886         i40e_flush(hw);
7887
7888         i40e_irq_dynamic_enable_icr0(pf, true);
7889
7890         return err;
7891 }
7892
7893 /**
7894  * i40e_config_rss_aq - Prepare for RSS using AQ commands
7895  * @vsi: vsi structure
7896  * @seed: RSS hash seed
7897  **/
7898 static int i40e_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
7899                               u8 *lut, u16 lut_size)
7900 {
7901         struct i40e_aqc_get_set_rss_key_data rss_key;
7902         struct i40e_pf *pf = vsi->back;
7903         struct i40e_hw *hw = &pf->hw;
7904         bool pf_lut = false;
7905         u8 *rss_lut;
7906         int ret, i;
7907
7908         memset(&rss_key, 0, sizeof(rss_key));
7909         memcpy(&rss_key, seed, sizeof(rss_key));
7910
7911         rss_lut = kzalloc(pf->rss_table_size, GFP_KERNEL);
7912         if (!rss_lut)
7913                 return -ENOMEM;
7914
7915         /* Populate the LUT with max no. of queues in round robin fashion */
7916         for (i = 0; i < vsi->rss_table_size; i++)
7917                 rss_lut[i] = i % vsi->rss_size;
7918
7919         ret = i40e_aq_set_rss_key(hw, vsi->id, &rss_key);
7920         if (ret) {
7921                 dev_info(&pf->pdev->dev,
7922                          "Cannot set RSS key, err %s aq_err %s\n",
7923                          i40e_stat_str(&pf->hw, ret),
7924                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7925                 goto config_rss_aq_out;
7926         }
7927
7928         if (vsi->type == I40E_VSI_MAIN)
7929                 pf_lut = true;
7930
7931         ret = i40e_aq_set_rss_lut(hw, vsi->id, pf_lut, rss_lut,
7932                                   vsi->rss_table_size);
7933         if (ret)
7934                 dev_info(&pf->pdev->dev,
7935                          "Cannot set RSS lut, err %s aq_err %s\n",
7936                          i40e_stat_str(&pf->hw, ret),
7937                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
7938
7939 config_rss_aq_out:
7940         kfree(rss_lut);
7941         return ret;
7942 }
7943
7944 /**
7945  * i40e_vsi_config_rss - Prepare for VSI(VMDq) RSS if used
7946  * @vsi: VSI structure
7947  **/
7948 static int i40e_vsi_config_rss(struct i40e_vsi *vsi)
7949 {
7950         u8 seed[I40E_HKEY_ARRAY_SIZE];
7951         struct i40e_pf *pf = vsi->back;
7952         u8 *lut;
7953         int ret;
7954
7955         if (!(pf->flags & I40E_FLAG_RSS_AQ_CAPABLE))
7956                 return 0;
7957
7958         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
7959         if (!lut)
7960                 return -ENOMEM;
7961
7962         i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
7963         netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
7964         vsi->rss_size = min_t(int, pf->alloc_rss_size, vsi->num_queue_pairs);
7965         ret = i40e_config_rss_aq(vsi, seed, lut, vsi->rss_table_size);
7966         kfree(lut);
7967
7968         return ret;
7969 }
7970
7971 /**
7972  * i40e_get_rss_aq - Get RSS keys and lut by using AQ commands
7973  * @vsi: Pointer to vsi structure
7974  * @seed: Buffter to store the hash keys
7975  * @lut: Buffer to store the lookup table entries
7976  * @lut_size: Size of buffer to store the lookup table entries
7977  *
7978  * Return 0 on success, negative on failure
7979  */
7980 static int i40e_get_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
7981                            u8 *lut, u16 lut_size)
7982 {
7983         struct i40e_pf *pf = vsi->back;
7984         struct i40e_hw *hw = &pf->hw;
7985         int ret = 0;
7986
7987         if (seed) {
7988                 ret = i40e_aq_get_rss_key(hw, vsi->id,
7989                         (struct i40e_aqc_get_set_rss_key_data *)seed);
7990                 if (ret) {
7991                         dev_info(&pf->pdev->dev,
7992                                  "Cannot get RSS key, err %s aq_err %s\n",
7993                                  i40e_stat_str(&pf->hw, ret),
7994                                  i40e_aq_str(&pf->hw,
7995                                              pf->hw.aq.asq_last_status));
7996                         return ret;
7997                 }
7998         }
7999
8000         if (lut) {
8001                 bool pf_lut = vsi->type == I40E_VSI_MAIN ? true : false;
8002
8003                 ret = i40e_aq_get_rss_lut(hw, vsi->id, pf_lut, lut, lut_size);
8004                 if (ret) {
8005                         dev_info(&pf->pdev->dev,
8006                                  "Cannot get RSS lut, err %s aq_err %s\n",
8007                                  i40e_stat_str(&pf->hw, ret),
8008                                  i40e_aq_str(&pf->hw,
8009                                              pf->hw.aq.asq_last_status));
8010                         return ret;
8011                 }
8012         }
8013
8014         return ret;
8015 }
8016
8017 /**
8018  * i40e_config_rss_reg - Configure RSS keys and lut by writing registers
8019  * @vsi: Pointer to vsi structure
8020  * @seed: RSS hash seed
8021  * @lut: Lookup table
8022  * @lut_size: Lookup table size
8023  *
8024  * Returns 0 on success, negative on failure
8025  **/
8026 static int i40e_config_rss_reg(struct i40e_vsi *vsi, const u8 *seed,
8027                                const u8 *lut, u16 lut_size)
8028 {
8029         struct i40e_pf *pf = vsi->back;
8030         struct i40e_hw *hw = &pf->hw;
8031         u16 vf_id = vsi->vf_id;
8032         u8 i;
8033
8034         /* Fill out hash function seed */
8035         if (seed) {
8036                 u32 *seed_dw = (u32 *)seed;
8037
8038                 if (vsi->type == I40E_VSI_MAIN) {
8039                         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
8040                                 i40e_write_rx_ctl(hw, I40E_PFQF_HKEY(i),
8041                                                   seed_dw[i]);
8042                 } else if (vsi->type == I40E_VSI_SRIOV) {
8043                         for (i = 0; i <= I40E_VFQF_HKEY1_MAX_INDEX; i++)
8044                                 i40e_write_rx_ctl(hw,
8045                                                   I40E_VFQF_HKEY1(i, vf_id),
8046                                                   seed_dw[i]);
8047                 } else {
8048                         dev_err(&pf->pdev->dev, "Cannot set RSS seed - invalid VSI type\n");
8049                 }
8050         }
8051
8052         if (lut) {
8053                 u32 *lut_dw = (u32 *)lut;
8054
8055                 if (vsi->type == I40E_VSI_MAIN) {
8056                         if (lut_size != I40E_HLUT_ARRAY_SIZE)
8057                                 return -EINVAL;
8058                         for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
8059                                 wr32(hw, I40E_PFQF_HLUT(i), lut_dw[i]);
8060                 } else if (vsi->type == I40E_VSI_SRIOV) {
8061                         if (lut_size != I40E_VF_HLUT_ARRAY_SIZE)
8062                                 return -EINVAL;
8063                         for (i = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++)
8064                                 i40e_write_rx_ctl(hw,
8065                                                   I40E_VFQF_HLUT1(i, vf_id),
8066                                                   lut_dw[i]);
8067                 } else {
8068                         dev_err(&pf->pdev->dev, "Cannot set RSS LUT - invalid VSI type\n");
8069                 }
8070         }
8071         i40e_flush(hw);
8072
8073         return 0;
8074 }
8075
8076 /**
8077  * i40e_get_rss_reg - Get the RSS keys and lut by reading registers
8078  * @vsi: Pointer to VSI structure
8079  * @seed: Buffer to store the keys
8080  * @lut: Buffer to store the lookup table entries
8081  * @lut_size: Size of buffer to store the lookup table entries
8082  *
8083  * Returns 0 on success, negative on failure
8084  */
8085 static int i40e_get_rss_reg(struct i40e_vsi *vsi, u8 *seed,
8086                             u8 *lut, u16 lut_size)
8087 {
8088         struct i40e_pf *pf = vsi->back;
8089         struct i40e_hw *hw = &pf->hw;
8090         u16 i;
8091
8092         if (seed) {
8093                 u32 *seed_dw = (u32 *)seed;
8094
8095                 for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
8096                         seed_dw[i] = i40e_read_rx_ctl(hw, I40E_PFQF_HKEY(i));
8097         }
8098         if (lut) {
8099                 u32 *lut_dw = (u32 *)lut;
8100
8101                 if (lut_size != I40E_HLUT_ARRAY_SIZE)
8102                         return -EINVAL;
8103                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
8104                         lut_dw[i] = rd32(hw, I40E_PFQF_HLUT(i));
8105         }
8106
8107         return 0;
8108 }
8109
8110 /**
8111  * i40e_config_rss - Configure RSS keys and lut
8112  * @vsi: Pointer to VSI structure
8113  * @seed: RSS hash seed
8114  * @lut: Lookup table
8115  * @lut_size: Lookup table size
8116  *
8117  * Returns 0 on success, negative on failure
8118  */
8119 int i40e_config_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
8120 {
8121         struct i40e_pf *pf = vsi->back;
8122
8123         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
8124                 return i40e_config_rss_aq(vsi, seed, lut, lut_size);
8125         else
8126                 return i40e_config_rss_reg(vsi, seed, lut, lut_size);
8127 }
8128
8129 /**
8130  * i40e_get_rss - Get RSS keys and lut
8131  * @vsi: Pointer to VSI structure
8132  * @seed: Buffer to store the keys
8133  * @lut: Buffer to store the lookup table entries
8134  * lut_size: Size of buffer to store the lookup table entries
8135  *
8136  * Returns 0 on success, negative on failure
8137  */
8138 int i40e_get_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
8139 {
8140         struct i40e_pf *pf = vsi->back;
8141
8142         if (pf->flags & I40E_FLAG_RSS_AQ_CAPABLE)
8143                 return i40e_get_rss_aq(vsi, seed, lut, lut_size);
8144         else
8145                 return i40e_get_rss_reg(vsi, seed, lut, lut_size);
8146 }
8147
8148 /**
8149  * i40e_fill_rss_lut - Fill the RSS lookup table with default values
8150  * @pf: Pointer to board private structure
8151  * @lut: Lookup table
8152  * @rss_table_size: Lookup table size
8153  * @rss_size: Range of queue number for hashing
8154  */
8155 static void i40e_fill_rss_lut(struct i40e_pf *pf, u8 *lut,
8156                               u16 rss_table_size, u16 rss_size)
8157 {
8158         u16 i;
8159
8160         for (i = 0; i < rss_table_size; i++)
8161                 lut[i] = i % rss_size;
8162 }
8163
8164 /**
8165  * i40e_pf_config_rss - Prepare for RSS if used
8166  * @pf: board private structure
8167  **/
8168 static int i40e_pf_config_rss(struct i40e_pf *pf)
8169 {
8170         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
8171         u8 seed[I40E_HKEY_ARRAY_SIZE];
8172         u8 *lut;
8173         struct i40e_hw *hw = &pf->hw;
8174         u32 reg_val;
8175         u64 hena;
8176         int ret;
8177
8178         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
8179         hena = (u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(0)) |
8180                 ((u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(1)) << 32);
8181         hena |= i40e_pf_get_default_rss_hena(pf);
8182
8183         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), (u32)hena);
8184         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
8185
8186         /* Determine the RSS table size based on the hardware capabilities */
8187         reg_val = i40e_read_rx_ctl(hw, I40E_PFQF_CTL_0);
8188         reg_val = (pf->rss_table_size == 512) ?
8189                         (reg_val | I40E_PFQF_CTL_0_HASHLUTSIZE_512) :
8190                         (reg_val & ~I40E_PFQF_CTL_0_HASHLUTSIZE_512);
8191         i40e_write_rx_ctl(hw, I40E_PFQF_CTL_0, reg_val);
8192
8193         /* Determine the RSS size of the VSI */
8194         if (!vsi->rss_size)
8195                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8196                                       vsi->num_queue_pairs);
8197
8198         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
8199         if (!lut)
8200                 return -ENOMEM;
8201
8202         /* Use user configured lut if there is one, otherwise use default */
8203         if (vsi->rss_lut_user)
8204                 memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
8205         else
8206                 i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
8207
8208         /* Use user configured hash key if there is one, otherwise
8209          * use default.
8210          */
8211         if (vsi->rss_hkey_user)
8212                 memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
8213         else
8214                 netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
8215         ret = i40e_config_rss(vsi, seed, lut, vsi->rss_table_size);
8216         kfree(lut);
8217
8218         return ret;
8219 }
8220
8221 /**
8222  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
8223  * @pf: board private structure
8224  * @queue_count: the requested queue count for rss.
8225  *
8226  * returns 0 if rss is not enabled, if enabled returns the final rss queue
8227  * count which may be different from the requested queue count.
8228  **/
8229 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
8230 {
8231         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
8232         int new_rss_size;
8233
8234         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
8235                 return 0;
8236
8237         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
8238
8239         if (queue_count != vsi->num_queue_pairs) {
8240                 vsi->req_queue_pairs = queue_count;
8241                 i40e_prep_for_reset(pf);
8242
8243                 pf->alloc_rss_size = new_rss_size;
8244
8245                 i40e_reset_and_rebuild(pf, true);
8246
8247                 /* Discard the user configured hash keys and lut, if less
8248                  * queues are enabled.
8249                  */
8250                 if (queue_count < vsi->rss_size) {
8251                         i40e_clear_rss_config_user(vsi);
8252                         dev_dbg(&pf->pdev->dev,
8253                                 "discard user configured hash keys and lut\n");
8254                 }
8255
8256                 /* Reset vsi->rss_size, as number of enabled queues changed */
8257                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
8258                                       vsi->num_queue_pairs);
8259
8260                 i40e_pf_config_rss(pf);
8261         }
8262         dev_info(&pf->pdev->dev, "RSS count/HW max RSS count:  %d/%d\n",
8263                  pf->alloc_rss_size, pf->rss_size_max);
8264         return pf->alloc_rss_size;
8265 }
8266
8267 /**
8268  * i40e_get_npar_bw_setting - Retrieve BW settings for this PF partition
8269  * @pf: board private structure
8270  **/
8271 i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf)
8272 {
8273         i40e_status status;
8274         bool min_valid, max_valid;
8275         u32 max_bw, min_bw;
8276
8277         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
8278                                            &min_valid, &max_valid);
8279
8280         if (!status) {
8281                 if (min_valid)
8282                         pf->npar_min_bw = min_bw;
8283                 if (max_valid)
8284                         pf->npar_max_bw = max_bw;
8285         }
8286
8287         return status;
8288 }
8289
8290 /**
8291  * i40e_set_npar_bw_setting - Set BW settings for this PF partition
8292  * @pf: board private structure
8293  **/
8294 i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf)
8295 {
8296         struct i40e_aqc_configure_partition_bw_data bw_data;
8297         i40e_status status;
8298
8299         /* Set the valid bit for this PF */
8300         bw_data.pf_valid_bits = cpu_to_le16(BIT(pf->hw.pf_id));
8301         bw_data.max_bw[pf->hw.pf_id] = pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK;
8302         bw_data.min_bw[pf->hw.pf_id] = pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK;
8303
8304         /* Set the new bandwidths */
8305         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
8306
8307         return status;
8308 }
8309
8310 /**
8311  * i40e_commit_npar_bw_setting - Commit BW settings for this PF partition
8312  * @pf: board private structure
8313  **/
8314 i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf)
8315 {
8316         /* Commit temporary BW setting to permanent NVM image */
8317         enum i40e_admin_queue_err last_aq_status;
8318         i40e_status ret;
8319         u16 nvm_word;
8320
8321         if (pf->hw.partition_id != 1) {
8322                 dev_info(&pf->pdev->dev,
8323                          "Commit BW only works on partition 1! This is partition %d",
8324                          pf->hw.partition_id);
8325                 ret = I40E_NOT_SUPPORTED;
8326                 goto bw_commit_out;
8327         }
8328
8329         /* Acquire NVM for read access */
8330         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
8331         last_aq_status = pf->hw.aq.asq_last_status;
8332         if (ret) {
8333                 dev_info(&pf->pdev->dev,
8334                          "Cannot acquire NVM for read access, err %s aq_err %s\n",
8335                          i40e_stat_str(&pf->hw, ret),
8336                          i40e_aq_str(&pf->hw, last_aq_status));
8337                 goto bw_commit_out;
8338         }
8339
8340         /* Read word 0x10 of NVM - SW compatibility word 1 */
8341         ret = i40e_aq_read_nvm(&pf->hw,
8342                                I40E_SR_NVM_CONTROL_WORD,
8343                                0x10, sizeof(nvm_word), &nvm_word,
8344                                false, NULL);
8345         /* Save off last admin queue command status before releasing
8346          * the NVM
8347          */
8348         last_aq_status = pf->hw.aq.asq_last_status;
8349         i40e_release_nvm(&pf->hw);
8350         if (ret) {
8351                 dev_info(&pf->pdev->dev, "NVM read error, err %s aq_err %s\n",
8352                          i40e_stat_str(&pf->hw, ret),
8353                          i40e_aq_str(&pf->hw, last_aq_status));
8354                 goto bw_commit_out;
8355         }
8356
8357         /* Wait a bit for NVM release to complete */
8358         msleep(50);
8359
8360         /* Acquire NVM for write access */
8361         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
8362         last_aq_status = pf->hw.aq.asq_last_status;
8363         if (ret) {
8364                 dev_info(&pf->pdev->dev,
8365                          "Cannot acquire NVM for write access, err %s aq_err %s\n",
8366                          i40e_stat_str(&pf->hw, ret),
8367                          i40e_aq_str(&pf->hw, last_aq_status));
8368                 goto bw_commit_out;
8369         }
8370         /* Write it back out unchanged to initiate update NVM,
8371          * which will force a write of the shadow (alt) RAM to
8372          * the NVM - thus storing the bandwidth values permanently.
8373          */
8374         ret = i40e_aq_update_nvm(&pf->hw,
8375                                  I40E_SR_NVM_CONTROL_WORD,
8376                                  0x10, sizeof(nvm_word),
8377                                  &nvm_word, true, NULL);
8378         /* Save off last admin queue command status before releasing
8379          * the NVM
8380          */
8381         last_aq_status = pf->hw.aq.asq_last_status;
8382         i40e_release_nvm(&pf->hw);
8383         if (ret)
8384                 dev_info(&pf->pdev->dev,
8385                          "BW settings NOT SAVED, err %s aq_err %s\n",
8386                          i40e_stat_str(&pf->hw, ret),
8387                          i40e_aq_str(&pf->hw, last_aq_status));
8388 bw_commit_out:
8389
8390         return ret;
8391 }
8392
8393 /**
8394  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
8395  * @pf: board private structure to initialize
8396  *
8397  * i40e_sw_init initializes the Adapter private data structure.
8398  * Fields are initialized based on PCI device information and
8399  * OS network device settings (MTU size).
8400  **/
8401 static int i40e_sw_init(struct i40e_pf *pf)
8402 {
8403         int err = 0;
8404         int size;
8405
8406         pf->msg_enable = netif_msg_init(I40E_DEFAULT_MSG_ENABLE,
8407                                 (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK));
8408         if (debug != -1 && debug != I40E_DEFAULT_MSG_ENABLE) {
8409                 if (I40E_DEBUG_USER & debug)
8410                         pf->hw.debug_mask = debug;
8411                 pf->msg_enable = netif_msg_init((debug & ~I40E_DEBUG_USER),
8412                                                 I40E_DEFAULT_MSG_ENABLE);
8413         }
8414
8415         /* Set default capability flags */
8416         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
8417                     I40E_FLAG_MSI_ENABLED     |
8418                     I40E_FLAG_MSIX_ENABLED;
8419
8420         /* Set default ITR */
8421         pf->rx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_RX_DEF;
8422         pf->tx_itr_default = I40E_ITR_DYNAMIC | I40E_ITR_TX_DEF;
8423
8424         /* Depending on PF configurations, it is possible that the RSS
8425          * maximum might end up larger than the available queues
8426          */
8427         pf->rss_size_max = BIT(pf->hw.func_caps.rss_table_entry_width);
8428         pf->alloc_rss_size = 1;
8429         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
8430         pf->rss_size_max = min_t(int, pf->rss_size_max,
8431                                  pf->hw.func_caps.num_tx_qp);
8432         if (pf->hw.func_caps.rss) {
8433                 pf->flags |= I40E_FLAG_RSS_ENABLED;
8434                 pf->alloc_rss_size = min_t(int, pf->rss_size_max,
8435                                            num_online_cpus());
8436         }
8437
8438         /* MFP mode enabled */
8439         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.flex10_enable) {
8440                 pf->flags |= I40E_FLAG_MFP_ENABLED;
8441                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
8442                 if (i40e_get_npar_bw_setting(pf))
8443                         dev_warn(&pf->pdev->dev,
8444                                  "Could not get NPAR bw settings\n");
8445                 else
8446                         dev_info(&pf->pdev->dev,
8447                                  "Min BW = %8.8x, Max BW = %8.8x\n",
8448                                  pf->npar_min_bw, pf->npar_max_bw);
8449         }
8450
8451         /* FW/NVM is not yet fixed in this regard */
8452         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
8453             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
8454                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8455                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
8456                 if (pf->flags & I40E_FLAG_MFP_ENABLED &&
8457                     pf->hw.num_partitions > 1)
8458                         dev_info(&pf->pdev->dev,
8459                                  "Flow Director Sideband mode Disabled in MFP mode\n");
8460                 else
8461                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8462                 pf->fdir_pf_filter_count =
8463                                  pf->hw.func_caps.fd_filters_guaranteed;
8464                 pf->hw.fdir_shared_filter_count =
8465                                  pf->hw.func_caps.fd_filters_best_effort;
8466         }
8467
8468         if (i40e_is_mac_710(&pf->hw) &&
8469             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
8470             (pf->hw.aq.fw_maj_ver < 4))) {
8471                 pf->flags |= I40E_FLAG_RESTART_AUTONEG;
8472                 /* No DCB support  for FW < v4.33 */
8473                 pf->flags |= I40E_FLAG_NO_DCB_SUPPORT;
8474         }
8475
8476         /* Disable FW LLDP if FW < v4.3 */
8477         if (i40e_is_mac_710(&pf->hw) &&
8478             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
8479             (pf->hw.aq.fw_maj_ver < 4)))
8480                 pf->flags |= I40E_FLAG_STOP_FW_LLDP;
8481
8482         /* Use the FW Set LLDP MIB API if FW > v4.40 */
8483         if (i40e_is_mac_710(&pf->hw) &&
8484             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver >= 40)) ||
8485             (pf->hw.aq.fw_maj_ver >= 5)))
8486                 pf->flags |= I40E_FLAG_USE_SET_LLDP_MIB;
8487
8488         if (pf->hw.func_caps.vmdq) {
8489                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
8490                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
8491                 pf->num_vmdq_qps = i40e_default_queues_per_vmdq(pf);
8492         }
8493
8494         if (pf->hw.func_caps.iwarp) {
8495                 pf->flags |= I40E_FLAG_IWARP_ENABLED;
8496                 /* IWARP needs one extra vector for CQP just like MISC.*/
8497                 pf->num_iwarp_msix = (int)num_online_cpus() + 1;
8498         }
8499
8500 #ifdef I40E_FCOE
8501         i40e_init_pf_fcoe(pf);
8502
8503 #endif /* I40E_FCOE */
8504 #ifdef CONFIG_PCI_IOV
8505         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
8506                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
8507                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
8508                 pf->num_req_vfs = min_t(int,
8509                                         pf->hw.func_caps.num_vfs,
8510                                         I40E_MAX_VF_COUNT);
8511         }
8512 #endif /* CONFIG_PCI_IOV */
8513         if (pf->hw.mac.type == I40E_MAC_X722) {
8514                 pf->flags |= I40E_FLAG_RSS_AQ_CAPABLE |
8515                              I40E_FLAG_128_QP_RSS_CAPABLE |
8516                              I40E_FLAG_HW_ATR_EVICT_CAPABLE |
8517                              I40E_FLAG_OUTER_UDP_CSUM_CAPABLE |
8518                              I40E_FLAG_WB_ON_ITR_CAPABLE |
8519                              I40E_FLAG_MULTIPLE_TCP_UDP_RSS_PCTYPE |
8520                              I40E_FLAG_NO_PCI_LINK_CHECK |
8521                              I40E_FLAG_100M_SGMII_CAPABLE |
8522                              I40E_FLAG_USE_SET_LLDP_MIB |
8523                              I40E_FLAG_GENEVE_OFFLOAD_CAPABLE;
8524         } else if ((pf->hw.aq.api_maj_ver > 1) ||
8525                    ((pf->hw.aq.api_maj_ver == 1) &&
8526                     (pf->hw.aq.api_min_ver > 4))) {
8527                 /* Supported in FW API version higher than 1.4 */
8528                 pf->flags |= I40E_FLAG_GENEVE_OFFLOAD_CAPABLE;
8529                 pf->auto_disable_flags = I40E_FLAG_HW_ATR_EVICT_CAPABLE;
8530         } else {
8531                 pf->auto_disable_flags = I40E_FLAG_HW_ATR_EVICT_CAPABLE;
8532         }
8533
8534         pf->eeprom_version = 0xDEAD;
8535         pf->lan_veb = I40E_NO_VEB;
8536         pf->lan_vsi = I40E_NO_VSI;
8537
8538         /* By default FW has this off for performance reasons */
8539         pf->flags &= ~I40E_FLAG_VEB_STATS_ENABLED;
8540
8541         /* set up queue assignment tracking */
8542         size = sizeof(struct i40e_lump_tracking)
8543                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
8544         pf->qp_pile = kzalloc(size, GFP_KERNEL);
8545         if (!pf->qp_pile) {
8546                 err = -ENOMEM;
8547                 goto sw_init_done;
8548         }
8549         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
8550         pf->qp_pile->search_hint = 0;
8551
8552         pf->tx_timeout_recovery_level = 1;
8553
8554         mutex_init(&pf->switch_mutex);
8555
8556         /* If NPAR is enabled nudge the Tx scheduler */
8557         if (pf->hw.func_caps.npar_enable && (!i40e_get_npar_bw_setting(pf)))
8558                 i40e_set_npar_bw_setting(pf);
8559
8560 sw_init_done:
8561         return err;
8562 }
8563
8564 /**
8565  * i40e_set_ntuple - set the ntuple feature flag and take action
8566  * @pf: board private structure to initialize
8567  * @features: the feature set that the stack is suggesting
8568  *
8569  * returns a bool to indicate if reset needs to happen
8570  **/
8571 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
8572 {
8573         bool need_reset = false;
8574
8575         /* Check if Flow Director n-tuple support was enabled or disabled.  If
8576          * the state changed, we need to reset.
8577          */
8578         if (features & NETIF_F_NTUPLE) {
8579                 /* Enable filters and mark for reset */
8580                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
8581                         need_reset = true;
8582                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8583         } else {
8584                 /* turn off filters, mark for reset and clear SW filter list */
8585                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
8586                         need_reset = true;
8587                         i40e_fdir_filter_exit(pf);
8588                 }
8589                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8590                 pf->auto_disable_flags &= ~I40E_FLAG_FD_SB_ENABLED;
8591                 /* reset fd counters */
8592                 pf->fd_add_err = pf->fd_atr_cnt = pf->fd_tcp_rule = 0;
8593                 pf->fdir_pf_active_filters = 0;
8594                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
8595                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
8596                         dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
8597                 /* if ATR was auto disabled it can be re-enabled. */
8598                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
8599                     (pf->auto_disable_flags & I40E_FLAG_FD_ATR_ENABLED))
8600                         pf->auto_disable_flags &= ~I40E_FLAG_FD_ATR_ENABLED;
8601         }
8602         return need_reset;
8603 }
8604
8605 /**
8606  * i40e_set_features - set the netdev feature flags
8607  * @netdev: ptr to the netdev being adjusted
8608  * @features: the feature set that the stack is suggesting
8609  **/
8610 static int i40e_set_features(struct net_device *netdev,
8611                              netdev_features_t features)
8612 {
8613         struct i40e_netdev_priv *np = netdev_priv(netdev);
8614         struct i40e_vsi *vsi = np->vsi;
8615         struct i40e_pf *pf = vsi->back;
8616         bool need_reset;
8617
8618         if (features & NETIF_F_HW_VLAN_CTAG_RX)
8619                 i40e_vlan_stripping_enable(vsi);
8620         else
8621                 i40e_vlan_stripping_disable(vsi);
8622
8623         need_reset = i40e_set_ntuple(pf, features);
8624
8625         if (need_reset)
8626                 i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8627
8628         return 0;
8629 }
8630
8631 #if IS_ENABLED(CONFIG_VXLAN) || IS_ENABLED(CONFIG_GENEVE)
8632 /**
8633  * i40e_get_udp_port_idx - Lookup a possibly offloaded for Rx UDP port
8634  * @pf: board private structure
8635  * @port: The UDP port to look up
8636  *
8637  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
8638  **/
8639 static u8 i40e_get_udp_port_idx(struct i40e_pf *pf, __be16 port)
8640 {
8641         u8 i;
8642
8643         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
8644                 if (pf->udp_ports[i].index == port)
8645                         return i;
8646         }
8647
8648         return i;
8649 }
8650
8651 #endif
8652
8653 #if IS_ENABLED(CONFIG_VXLAN)
8654 /**
8655  * i40e_add_vxlan_port - Get notifications about VXLAN ports that come up
8656  * @netdev: This physical port's netdev
8657  * @sa_family: Socket Family that VXLAN is notifying us about
8658  * @port: New UDP port number that VXLAN started listening to
8659  **/
8660 static void i40e_add_vxlan_port(struct net_device *netdev,
8661                                 sa_family_t sa_family, __be16 port)
8662 {
8663         struct i40e_netdev_priv *np = netdev_priv(netdev);
8664         struct i40e_vsi *vsi = np->vsi;
8665         struct i40e_pf *pf = vsi->back;
8666         u8 next_idx;
8667         u8 idx;
8668
8669         idx = i40e_get_udp_port_idx(pf, port);
8670
8671         /* Check if port already exists */
8672         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8673                 netdev_info(netdev, "vxlan port %d already offloaded\n",
8674                             ntohs(port));
8675                 return;
8676         }
8677
8678         /* Now check if there is space to add the new port */
8679         next_idx = i40e_get_udp_port_idx(pf, 0);
8680
8681         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8682                 netdev_info(netdev, "maximum number of vxlan UDP ports reached, not adding port %d\n",
8683                             ntohs(port));
8684                 return;
8685         }
8686
8687         /* New port: add it and mark its index in the bitmap */
8688         pf->udp_ports[next_idx].index = port;
8689         pf->udp_ports[next_idx].type = I40E_AQC_TUNNEL_TYPE_VXLAN;
8690         pf->pending_udp_bitmap |= BIT_ULL(next_idx);
8691         pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
8692 }
8693
8694 /**
8695  * i40e_del_vxlan_port - Get notifications about VXLAN ports that go away
8696  * @netdev: This physical port's netdev
8697  * @sa_family: Socket Family that VXLAN is notifying us about
8698  * @port: UDP port number that VXLAN stopped listening to
8699  **/
8700 static void i40e_del_vxlan_port(struct net_device *netdev,
8701                                 sa_family_t sa_family, __be16 port)
8702 {
8703         struct i40e_netdev_priv *np = netdev_priv(netdev);
8704         struct i40e_vsi *vsi = np->vsi;
8705         struct i40e_pf *pf = vsi->back;
8706         u8 idx;
8707
8708         idx = i40e_get_udp_port_idx(pf, port);
8709
8710         /* Check if port already exists */
8711         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8712                 /* if port exists, set it to 0 (mark for deletion)
8713                  * and make it pending
8714                  */
8715                 pf->udp_ports[idx].index = 0;
8716                 pf->pending_udp_bitmap |= BIT_ULL(idx);
8717                 pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
8718         } else {
8719                 netdev_warn(netdev, "vxlan port %d was not found, not deleting\n",
8720                             ntohs(port));
8721         }
8722 }
8723 #endif
8724
8725 #if IS_ENABLED(CONFIG_GENEVE)
8726 /**
8727  * i40e_add_geneve_port - Get notifications about GENEVE ports that come up
8728  * @netdev: This physical port's netdev
8729  * @sa_family: Socket Family that GENEVE is notifying us about
8730  * @port: New UDP port number that GENEVE started listening to
8731  **/
8732 static void i40e_add_geneve_port(struct net_device *netdev,
8733                                  sa_family_t sa_family, __be16 port)
8734 {
8735         struct i40e_netdev_priv *np = netdev_priv(netdev);
8736         struct i40e_vsi *vsi = np->vsi;
8737         struct i40e_pf *pf = vsi->back;
8738         u8 next_idx;
8739         u8 idx;
8740
8741         if (!(pf->flags & I40E_FLAG_GENEVE_OFFLOAD_CAPABLE))
8742                 return;
8743
8744         idx = i40e_get_udp_port_idx(pf, port);
8745
8746         /* Check if port already exists */
8747         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8748                 netdev_info(netdev, "udp port %d already offloaded\n",
8749                             ntohs(port));
8750                 return;
8751         }
8752
8753         /* Now check if there is space to add the new port */
8754         next_idx = i40e_get_udp_port_idx(pf, 0);
8755
8756         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8757                 netdev_info(netdev, "maximum number of UDP ports reached, not adding port %d\n",
8758                             ntohs(port));
8759                 return;
8760         }
8761
8762         /* New port: add it and mark its index in the bitmap */
8763         pf->udp_ports[next_idx].index = port;
8764         pf->udp_ports[next_idx].type = I40E_AQC_TUNNEL_TYPE_NGE;
8765         pf->pending_udp_bitmap |= BIT_ULL(next_idx);
8766         pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
8767
8768         dev_info(&pf->pdev->dev, "adding geneve port %d\n", ntohs(port));
8769 }
8770
8771 /**
8772  * i40e_del_geneve_port - Get notifications about GENEVE ports that go away
8773  * @netdev: This physical port's netdev
8774  * @sa_family: Socket Family that GENEVE is notifying us about
8775  * @port: UDP port number that GENEVE stopped listening to
8776  **/
8777 static void i40e_del_geneve_port(struct net_device *netdev,
8778                                  sa_family_t sa_family, __be16 port)
8779 {
8780         struct i40e_netdev_priv *np = netdev_priv(netdev);
8781         struct i40e_vsi *vsi = np->vsi;
8782         struct i40e_pf *pf = vsi->back;
8783         u8 idx;
8784
8785         if (!(pf->flags & I40E_FLAG_GENEVE_OFFLOAD_CAPABLE))
8786                 return;
8787
8788         idx = i40e_get_udp_port_idx(pf, port);
8789
8790         /* Check if port already exists */
8791         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
8792                 /* if port exists, set it to 0 (mark for deletion)
8793                  * and make it pending
8794                  */
8795                 pf->udp_ports[idx].index = 0;
8796                 pf->pending_udp_bitmap |= BIT_ULL(idx);
8797                 pf->flags |= I40E_FLAG_UDP_FILTER_SYNC;
8798
8799                 dev_info(&pf->pdev->dev, "deleting geneve port %d\n",
8800                          ntohs(port));
8801         } else {
8802                 netdev_warn(netdev, "geneve port %d was not found, not deleting\n",
8803                             ntohs(port));
8804         }
8805 }
8806 #endif
8807
8808 static int i40e_get_phys_port_id(struct net_device *netdev,
8809                                  struct netdev_phys_item_id *ppid)
8810 {
8811         struct i40e_netdev_priv *np = netdev_priv(netdev);
8812         struct i40e_pf *pf = np->vsi->back;
8813         struct i40e_hw *hw = &pf->hw;
8814
8815         if (!(pf->flags & I40E_FLAG_PORT_ID_VALID))
8816                 return -EOPNOTSUPP;
8817
8818         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
8819         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
8820
8821         return 0;
8822 }
8823
8824 /**
8825  * i40e_ndo_fdb_add - add an entry to the hardware database
8826  * @ndm: the input from the stack
8827  * @tb: pointer to array of nladdr (unused)
8828  * @dev: the net device pointer
8829  * @addr: the MAC address entry being added
8830  * @flags: instructions from stack about fdb operation
8831  */
8832 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
8833                             struct net_device *dev,
8834                             const unsigned char *addr, u16 vid,
8835                             u16 flags)
8836 {
8837         struct i40e_netdev_priv *np = netdev_priv(dev);
8838         struct i40e_pf *pf = np->vsi->back;
8839         int err = 0;
8840
8841         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
8842                 return -EOPNOTSUPP;
8843
8844         if (vid) {
8845                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
8846                 return -EINVAL;
8847         }
8848
8849         /* Hardware does not support aging addresses so if a
8850          * ndm_state is given only allow permanent addresses
8851          */
8852         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
8853                 netdev_info(dev, "FDB only supports static addresses\n");
8854                 return -EINVAL;
8855         }
8856
8857         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
8858                 err = dev_uc_add_excl(dev, addr);
8859         else if (is_multicast_ether_addr(addr))
8860                 err = dev_mc_add_excl(dev, addr);
8861         else
8862                 err = -EINVAL;
8863
8864         /* Only return duplicate errors if NLM_F_EXCL is set */
8865         if (err == -EEXIST && !(flags & NLM_F_EXCL))
8866                 err = 0;
8867
8868         return err;
8869 }
8870
8871 /**
8872  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
8873  * @dev: the netdev being configured
8874  * @nlh: RTNL message
8875  *
8876  * Inserts a new hardware bridge if not already created and
8877  * enables the bridging mode requested (VEB or VEPA). If the
8878  * hardware bridge has already been inserted and the request
8879  * is to change the mode then that requires a PF reset to
8880  * allow rebuild of the components with required hardware
8881  * bridge mode enabled.
8882  **/
8883 static int i40e_ndo_bridge_setlink(struct net_device *dev,
8884                                    struct nlmsghdr *nlh,
8885                                    u16 flags)
8886 {
8887         struct i40e_netdev_priv *np = netdev_priv(dev);
8888         struct i40e_vsi *vsi = np->vsi;
8889         struct i40e_pf *pf = vsi->back;
8890         struct i40e_veb *veb = NULL;
8891         struct nlattr *attr, *br_spec;
8892         int i, rem;
8893
8894         /* Only for PF VSI for now */
8895         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8896                 return -EOPNOTSUPP;
8897
8898         /* Find the HW bridge for PF VSI */
8899         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8900                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8901                         veb = pf->veb[i];
8902         }
8903
8904         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
8905
8906         nla_for_each_nested(attr, br_spec, rem) {
8907                 __u16 mode;
8908
8909                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
8910                         continue;
8911
8912                 mode = nla_get_u16(attr);
8913                 if ((mode != BRIDGE_MODE_VEPA) &&
8914                     (mode != BRIDGE_MODE_VEB))
8915                         return -EINVAL;
8916
8917                 /* Insert a new HW bridge */
8918                 if (!veb) {
8919                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
8920                                              vsi->tc_config.enabled_tc);
8921                         if (veb) {
8922                                 veb->bridge_mode = mode;
8923                                 i40e_config_bridge_mode(veb);
8924                         } else {
8925                                 /* No Bridge HW offload available */
8926                                 return -ENOENT;
8927                         }
8928                         break;
8929                 } else if (mode != veb->bridge_mode) {
8930                         /* Existing HW bridge but different mode needs reset */
8931                         veb->bridge_mode = mode;
8932                         /* TODO: If no VFs or VMDq VSIs, disallow VEB mode */
8933                         if (mode == BRIDGE_MODE_VEB)
8934                                 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
8935                         else
8936                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
8937                         i40e_do_reset(pf, BIT_ULL(__I40E_PF_RESET_REQUESTED));
8938                         break;
8939                 }
8940         }
8941
8942         return 0;
8943 }
8944
8945 /**
8946  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
8947  * @skb: skb buff
8948  * @pid: process id
8949  * @seq: RTNL message seq #
8950  * @dev: the netdev being configured
8951  * @filter_mask: unused
8952  * @nlflags: netlink flags passed in
8953  *
8954  * Return the mode in which the hardware bridge is operating in
8955  * i.e VEB or VEPA.
8956  **/
8957 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
8958                                    struct net_device *dev,
8959                                    u32 __always_unused filter_mask,
8960                                    int nlflags)
8961 {
8962         struct i40e_netdev_priv *np = netdev_priv(dev);
8963         struct i40e_vsi *vsi = np->vsi;
8964         struct i40e_pf *pf = vsi->back;
8965         struct i40e_veb *veb = NULL;
8966         int i;
8967
8968         /* Only for PF VSI for now */
8969         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
8970                 return -EOPNOTSUPP;
8971
8972         /* Find the HW bridge for the PF VSI */
8973         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
8974                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
8975                         veb = pf->veb[i];
8976         }
8977
8978         if (!veb)
8979                 return 0;
8980
8981         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
8982                                        nlflags, 0, 0, filter_mask, NULL);
8983 }
8984
8985 /* Hardware supports L4 tunnel length of 128B (=2^7) which includes
8986  * inner mac plus all inner ethertypes.
8987  */
8988 #define I40E_MAX_TUNNEL_HDR_LEN 128
8989 /**
8990  * i40e_features_check - Validate encapsulated packet conforms to limits
8991  * @skb: skb buff
8992  * @dev: This physical port's netdev
8993  * @features: Offload features that the stack believes apply
8994  **/
8995 static netdev_features_t i40e_features_check(struct sk_buff *skb,
8996                                              struct net_device *dev,
8997                                              netdev_features_t features)
8998 {
8999         if (skb->encapsulation &&
9000             ((skb_inner_network_header(skb) - skb_transport_header(skb)) >
9001              I40E_MAX_TUNNEL_HDR_LEN))
9002                 return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
9003
9004         return features;
9005 }
9006
9007 static const struct net_device_ops i40e_netdev_ops = {
9008         .ndo_open               = i40e_open,
9009         .ndo_stop               = i40e_close,
9010         .ndo_start_xmit         = i40e_lan_xmit_frame,
9011         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
9012         .ndo_set_rx_mode        = i40e_set_rx_mode,
9013         .ndo_validate_addr      = eth_validate_addr,
9014         .ndo_set_mac_address    = i40e_set_mac,
9015         .ndo_change_mtu         = i40e_change_mtu,
9016         .ndo_do_ioctl           = i40e_ioctl,
9017         .ndo_tx_timeout         = i40e_tx_timeout,
9018         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
9019         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
9020 #ifdef CONFIG_NET_POLL_CONTROLLER
9021         .ndo_poll_controller    = i40e_netpoll,
9022 #endif
9023         .ndo_setup_tc           = __i40e_setup_tc,
9024 #ifdef I40E_FCOE
9025         .ndo_fcoe_enable        = i40e_fcoe_enable,
9026         .ndo_fcoe_disable       = i40e_fcoe_disable,
9027 #endif
9028         .ndo_set_features       = i40e_set_features,
9029         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
9030         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
9031         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
9032         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
9033         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
9034         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
9035         .ndo_set_vf_trust       = i40e_ndo_set_vf_trust,
9036 #if IS_ENABLED(CONFIG_VXLAN)
9037         .ndo_add_vxlan_port     = i40e_add_vxlan_port,
9038         .ndo_del_vxlan_port     = i40e_del_vxlan_port,
9039 #endif
9040 #if IS_ENABLED(CONFIG_GENEVE)
9041         .ndo_add_geneve_port    = i40e_add_geneve_port,
9042         .ndo_del_geneve_port    = i40e_del_geneve_port,
9043 #endif
9044         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
9045         .ndo_fdb_add            = i40e_ndo_fdb_add,
9046         .ndo_features_check     = i40e_features_check,
9047         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
9048         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
9049 };
9050
9051 /**
9052  * i40e_config_netdev - Setup the netdev flags
9053  * @vsi: the VSI being configured
9054  *
9055  * Returns 0 on success, negative value on failure
9056  **/
9057 static int i40e_config_netdev(struct i40e_vsi *vsi)
9058 {
9059         u8 brdcast[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
9060         struct i40e_pf *pf = vsi->back;
9061         struct i40e_hw *hw = &pf->hw;
9062         struct i40e_netdev_priv *np;
9063         struct net_device *netdev;
9064         u8 mac_addr[ETH_ALEN];
9065         int etherdev_size;
9066
9067         etherdev_size = sizeof(struct i40e_netdev_priv);
9068         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
9069         if (!netdev)
9070                 return -ENOMEM;
9071
9072         vsi->netdev = netdev;
9073         np = netdev_priv(netdev);
9074         np->vsi = vsi;
9075
9076         netdev->hw_enc_features |= NETIF_F_SG                   |
9077                                    NETIF_F_IP_CSUM              |
9078                                    NETIF_F_IPV6_CSUM            |
9079                                    NETIF_F_HIGHDMA              |
9080                                    NETIF_F_SOFT_FEATURES        |
9081                                    NETIF_F_TSO                  |
9082                                    NETIF_F_TSO_ECN              |
9083                                    NETIF_F_TSO6                 |
9084                                    NETIF_F_GSO_GRE              |
9085                                    NETIF_F_GSO_GRE_CSUM         |
9086                                    NETIF_F_GSO_IPXIP4           |
9087                                    NETIF_F_GSO_IPXIP6           |
9088                                    NETIF_F_GSO_UDP_TUNNEL       |
9089                                    NETIF_F_GSO_UDP_TUNNEL_CSUM  |
9090                                    NETIF_F_GSO_PARTIAL          |
9091                                    NETIF_F_SCTP_CRC             |
9092                                    NETIF_F_RXHASH               |
9093                                    NETIF_F_RXCSUM               |
9094                                    0;
9095
9096         if (!(pf->flags & I40E_FLAG_OUTER_UDP_CSUM_CAPABLE))
9097                 netdev->gso_partial_features |= NETIF_F_GSO_UDP_TUNNEL_CSUM;
9098
9099         netdev->gso_partial_features |= NETIF_F_GSO_GRE_CSUM;
9100
9101         /* record features VLANs can make use of */
9102         netdev->vlan_features |= netdev->hw_enc_features |
9103                                  NETIF_F_TSO_MANGLEID;
9104
9105         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
9106                 netdev->hw_features |= NETIF_F_NTUPLE;
9107
9108         netdev->hw_features |= netdev->hw_enc_features  |
9109                                NETIF_F_HW_VLAN_CTAG_TX  |
9110                                NETIF_F_HW_VLAN_CTAG_RX;
9111
9112         netdev->features |= netdev->hw_features | NETIF_F_HW_VLAN_CTAG_FILTER;
9113         netdev->hw_enc_features |= NETIF_F_TSO_MANGLEID;
9114
9115         if (vsi->type == I40E_VSI_MAIN) {
9116                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
9117                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
9118                 /* The following steps are necessary to prevent reception
9119                  * of tagged packets - some older NVM configurations load a
9120                  * default a MAC-VLAN filter that accepts any tagged packet
9121                  * which must be replaced by a normal filter.
9122                  */
9123                 if (!i40e_rm_default_mac_filter(vsi, mac_addr)) {
9124                         spin_lock_bh(&vsi->mac_filter_list_lock);
9125                         i40e_add_filter(vsi, mac_addr,
9126                                         I40E_VLAN_ANY, false, true);
9127                         spin_unlock_bh(&vsi->mac_filter_list_lock);
9128                 }
9129         } else if ((pf->hw.aq.api_maj_ver > 1) ||
9130                    ((pf->hw.aq.api_maj_ver == 1) &&
9131                     (pf->hw.aq.api_min_ver > 4))) {
9132                 /* Supported in FW API version higher than 1.4 */
9133                 pf->flags |= I40E_FLAG_GENEVE_OFFLOAD_CAPABLE;
9134                 pf->auto_disable_flags = I40E_FLAG_HW_ATR_EVICT_CAPABLE;
9135         } else {
9136                 /* relate the VSI_VMDQ name to the VSI_MAIN name */
9137                 snprintf(netdev->name, IFNAMSIZ, "%sv%%d",
9138                          pf->vsi[pf->lan_vsi]->netdev->name);
9139                 random_ether_addr(mac_addr);
9140
9141                 spin_lock_bh(&vsi->mac_filter_list_lock);
9142                 i40e_add_filter(vsi, mac_addr, I40E_VLAN_ANY, false, false);
9143                 spin_unlock_bh(&vsi->mac_filter_list_lock);
9144         }
9145
9146         spin_lock_bh(&vsi->mac_filter_list_lock);
9147         i40e_add_filter(vsi, brdcast, I40E_VLAN_ANY, false, false);
9148         spin_unlock_bh(&vsi->mac_filter_list_lock);
9149
9150         ether_addr_copy(netdev->dev_addr, mac_addr);
9151         ether_addr_copy(netdev->perm_addr, mac_addr);
9152
9153         netdev->priv_flags |= IFF_UNICAST_FLT;
9154         netdev->priv_flags |= IFF_SUPP_NOFCS;
9155         /* Setup netdev TC information */
9156         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
9157
9158         netdev->netdev_ops = &i40e_netdev_ops;
9159         netdev->watchdog_timeo = 5 * HZ;
9160         i40e_set_ethtool_ops(netdev);
9161 #ifdef I40E_FCOE
9162         i40e_fcoe_config_netdev(netdev, vsi);
9163 #endif
9164
9165         return 0;
9166 }
9167
9168 /**
9169  * i40e_vsi_delete - Delete a VSI from the switch
9170  * @vsi: the VSI being removed
9171  *
9172  * Returns 0 on success, negative value on failure
9173  **/
9174 static void i40e_vsi_delete(struct i40e_vsi *vsi)
9175 {
9176         /* remove default VSI is not allowed */
9177         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
9178                 return;
9179
9180         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
9181 }
9182
9183 /**
9184  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
9185  * @vsi: the VSI being queried
9186  *
9187  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
9188  **/
9189 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
9190 {
9191         struct i40e_veb *veb;
9192         struct i40e_pf *pf = vsi->back;
9193
9194         /* Uplink is not a bridge so default to VEB */
9195         if (vsi->veb_idx == I40E_NO_VEB)
9196                 return 1;
9197
9198         veb = pf->veb[vsi->veb_idx];
9199         if (!veb) {
9200                 dev_info(&pf->pdev->dev,
9201                          "There is no veb associated with the bridge\n");
9202                 return -ENOENT;
9203         }
9204
9205         /* Uplink is a bridge in VEPA mode */
9206         if (veb->bridge_mode & BRIDGE_MODE_VEPA) {
9207                 return 0;
9208         } else {
9209                 /* Uplink is a bridge in VEB mode */
9210                 return 1;
9211         }
9212
9213         /* VEPA is now default bridge, so return 0 */
9214         return 0;
9215 }
9216
9217 /**
9218  * i40e_add_vsi - Add a VSI to the switch
9219  * @vsi: the VSI being configured
9220  *
9221  * This initializes a VSI context depending on the VSI type to be added and
9222  * passes it down to the add_vsi aq command.
9223  **/
9224 static int i40e_add_vsi(struct i40e_vsi *vsi)
9225 {
9226         int ret = -ENODEV;
9227         u8 laa_macaddr[ETH_ALEN];
9228         bool found_laa_mac_filter = false;
9229         struct i40e_pf *pf = vsi->back;
9230         struct i40e_hw *hw = &pf->hw;
9231         struct i40e_vsi_context ctxt;
9232         struct i40e_mac_filter *f, *ftmp;
9233
9234         u8 enabled_tc = 0x1; /* TC0 enabled */
9235         int f_count = 0;
9236
9237         memset(&ctxt, 0, sizeof(ctxt));
9238         switch (vsi->type) {
9239         case I40E_VSI_MAIN:
9240                 /* The PF's main VSI is already setup as part of the
9241                  * device initialization, so we'll not bother with
9242                  * the add_vsi call, but we will retrieve the current
9243                  * VSI context.
9244                  */
9245                 ctxt.seid = pf->main_vsi_seid;
9246                 ctxt.pf_num = pf->hw.pf_id;
9247                 ctxt.vf_num = 0;
9248                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
9249                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9250                 if (ret) {
9251                         dev_info(&pf->pdev->dev,
9252                                  "couldn't get PF vsi config, err %s aq_err %s\n",
9253                                  i40e_stat_str(&pf->hw, ret),
9254                                  i40e_aq_str(&pf->hw,
9255                                              pf->hw.aq.asq_last_status));
9256                         return -ENOENT;
9257                 }
9258                 vsi->info = ctxt.info;
9259                 vsi->info.valid_sections = 0;
9260
9261                 vsi->seid = ctxt.seid;
9262                 vsi->id = ctxt.vsi_number;
9263
9264                 enabled_tc = i40e_pf_get_tc_map(pf);
9265
9266                 /* MFP mode setup queue map and update VSI */
9267                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
9268                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
9269                         memset(&ctxt, 0, sizeof(ctxt));
9270                         ctxt.seid = pf->main_vsi_seid;
9271                         ctxt.pf_num = pf->hw.pf_id;
9272                         ctxt.vf_num = 0;
9273                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
9274                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
9275                         if (ret) {
9276                                 dev_info(&pf->pdev->dev,
9277                                          "update vsi failed, err %s aq_err %s\n",
9278                                          i40e_stat_str(&pf->hw, ret),
9279                                          i40e_aq_str(&pf->hw,
9280                                                     pf->hw.aq.asq_last_status));
9281                                 ret = -ENOENT;
9282                                 goto err;
9283                         }
9284                         /* update the local VSI info queue map */
9285                         i40e_vsi_update_queue_map(vsi, &ctxt);
9286                         vsi->info.valid_sections = 0;
9287                 } else {
9288                         /* Default/Main VSI is only enabled for TC0
9289                          * reconfigure it to enable all TCs that are
9290                          * available on the port in SFP mode.
9291                          * For MFP case the iSCSI PF would use this
9292                          * flow to enable LAN+iSCSI TC.
9293                          */
9294                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
9295                         if (ret) {
9296                                 dev_info(&pf->pdev->dev,
9297                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %s aq_err %s\n",
9298                                          enabled_tc,
9299                                          i40e_stat_str(&pf->hw, ret),
9300                                          i40e_aq_str(&pf->hw,
9301                                                     pf->hw.aq.asq_last_status));
9302                                 ret = -ENOENT;
9303                         }
9304                 }
9305                 break;
9306
9307         case I40E_VSI_FDIR:
9308                 ctxt.pf_num = hw->pf_id;
9309                 ctxt.vf_num = 0;
9310                 ctxt.uplink_seid = vsi->uplink_seid;
9311                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9312                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9313                 if ((pf->flags & I40E_FLAG_VEB_MODE_ENABLED) &&
9314                     (i40e_is_vsi_uplink_mode_veb(vsi))) {
9315                         ctxt.info.valid_sections |=
9316                              cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9317                         ctxt.info.switch_id =
9318                            cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9319                 }
9320                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9321                 break;
9322
9323         case I40E_VSI_VMDQ2:
9324                 ctxt.pf_num = hw->pf_id;
9325                 ctxt.vf_num = 0;
9326                 ctxt.uplink_seid = vsi->uplink_seid;
9327                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9328                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
9329
9330                 /* This VSI is connected to VEB so the switch_id
9331                  * should be set to zero by default.
9332                  */
9333                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
9334                         ctxt.info.valid_sections |=
9335                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9336                         ctxt.info.switch_id =
9337                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9338                 }
9339
9340                 /* Setup the VSI tx/rx queue map for TC0 only for now */
9341                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9342                 break;
9343
9344         case I40E_VSI_SRIOV:
9345                 ctxt.pf_num = hw->pf_id;
9346                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
9347                 ctxt.uplink_seid = vsi->uplink_seid;
9348                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
9349                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
9350
9351                 /* This VSI is connected to VEB so the switch_id
9352                  * should be set to zero by default.
9353                  */
9354                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
9355                         ctxt.info.valid_sections |=
9356                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9357                         ctxt.info.switch_id =
9358                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9359                 }
9360
9361                 if (vsi->back->flags & I40E_FLAG_IWARP_ENABLED) {
9362                         ctxt.info.valid_sections |=
9363                                 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
9364                         ctxt.info.queueing_opt_flags |=
9365                                 (I40E_AQ_VSI_QUE_OPT_TCP_ENA |
9366                                  I40E_AQ_VSI_QUE_OPT_RSS_LUT_VSI);
9367                 }
9368
9369                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
9370                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
9371                 if (pf->vf[vsi->vf_id].spoofchk) {
9372                         ctxt.info.valid_sections |=
9373                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
9374                         ctxt.info.sec_flags |=
9375                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
9376                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
9377                 }
9378                 /* Setup the VSI tx/rx queue map for TC0 only for now */
9379                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
9380                 break;
9381
9382 #ifdef I40E_FCOE
9383         case I40E_VSI_FCOE:
9384                 ret = i40e_fcoe_vsi_init(vsi, &ctxt);
9385                 if (ret) {
9386                         dev_info(&pf->pdev->dev, "failed to initialize FCoE VSI\n");
9387                         return ret;
9388                 }
9389                 break;
9390
9391 #endif /* I40E_FCOE */
9392         case I40E_VSI_IWARP:
9393                 /* send down message to iWARP */
9394                 break;
9395
9396         default:
9397                 return -ENODEV;
9398         }
9399
9400         if (vsi->type != I40E_VSI_MAIN) {
9401                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
9402                 if (ret) {
9403                         dev_info(&vsi->back->pdev->dev,
9404                                  "add vsi failed, err %s aq_err %s\n",
9405                                  i40e_stat_str(&pf->hw, ret),
9406                                  i40e_aq_str(&pf->hw,
9407                                              pf->hw.aq.asq_last_status));
9408                         ret = -ENOENT;
9409                         goto err;
9410                 }
9411                 vsi->info = ctxt.info;
9412                 vsi->info.valid_sections = 0;
9413                 vsi->seid = ctxt.seid;
9414                 vsi->id = ctxt.vsi_number;
9415         }
9416
9417         spin_lock_bh(&vsi->mac_filter_list_lock);
9418         /* If macvlan filters already exist, force them to get loaded */
9419         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list) {
9420                 f->changed = true;
9421                 f_count++;
9422
9423                 /* Expected to have only one MAC filter entry for LAA in list */
9424                 if (f->is_laa && vsi->type == I40E_VSI_MAIN) {
9425                         ether_addr_copy(laa_macaddr, f->macaddr);
9426                         found_laa_mac_filter = true;
9427                 }
9428         }
9429         spin_unlock_bh(&vsi->mac_filter_list_lock);
9430
9431         if (found_laa_mac_filter) {
9432                 struct i40e_aqc_remove_macvlan_element_data element;
9433
9434                 memset(&element, 0, sizeof(element));
9435                 ether_addr_copy(element.mac_addr, laa_macaddr);
9436                 element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
9437                 ret = i40e_aq_remove_macvlan(hw, vsi->seid,
9438                                              &element, 1, NULL);
9439                 if (ret) {
9440                         /* some older FW has a different default */
9441                         element.flags |=
9442                                        I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
9443                         i40e_aq_remove_macvlan(hw, vsi->seid,
9444                                                &element, 1, NULL);
9445                 }
9446
9447                 i40e_aq_mac_address_write(hw,
9448                                           I40E_AQC_WRITE_TYPE_LAA_WOL,
9449                                           laa_macaddr, NULL);
9450         }
9451
9452         if (f_count) {
9453                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
9454                 pf->flags |= I40E_FLAG_FILTER_SYNC;
9455         }
9456
9457         /* Update VSI BW information */
9458         ret = i40e_vsi_get_bw_info(vsi);
9459         if (ret) {
9460                 dev_info(&pf->pdev->dev,
9461                          "couldn't get vsi bw info, err %s aq_err %s\n",
9462                          i40e_stat_str(&pf->hw, ret),
9463                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9464                 /* VSI is already added so not tearing that up */
9465                 ret = 0;
9466         }
9467
9468 err:
9469         return ret;
9470 }
9471
9472 /**
9473  * i40e_vsi_release - Delete a VSI and free its resources
9474  * @vsi: the VSI being removed
9475  *
9476  * Returns 0 on success or < 0 on error
9477  **/
9478 int i40e_vsi_release(struct i40e_vsi *vsi)
9479 {
9480         struct i40e_mac_filter *f, *ftmp;
9481         struct i40e_veb *veb = NULL;
9482         struct i40e_pf *pf;
9483         u16 uplink_seid;
9484         int i, n;
9485
9486         pf = vsi->back;
9487
9488         /* release of a VEB-owner or last VSI is not allowed */
9489         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
9490                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
9491                          vsi->seid, vsi->uplink_seid);
9492                 return -ENODEV;
9493         }
9494         if (vsi == pf->vsi[pf->lan_vsi] &&
9495             !test_bit(__I40E_DOWN, &pf->state)) {
9496                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
9497                 return -ENODEV;
9498         }
9499
9500         uplink_seid = vsi->uplink_seid;
9501         if (vsi->type != I40E_VSI_SRIOV) {
9502                 if (vsi->netdev_registered) {
9503                         vsi->netdev_registered = false;
9504                         if (vsi->netdev) {
9505                                 /* results in a call to i40e_close() */
9506                                 unregister_netdev(vsi->netdev);
9507                         }
9508                 } else {
9509                         i40e_vsi_close(vsi);
9510                 }
9511                 i40e_vsi_disable_irq(vsi);
9512         }
9513
9514         spin_lock_bh(&vsi->mac_filter_list_lock);
9515         list_for_each_entry_safe(f, ftmp, &vsi->mac_filter_list, list)
9516                 i40e_del_filter(vsi, f->macaddr, f->vlan,
9517                                 f->is_vf, f->is_netdev);
9518         spin_unlock_bh(&vsi->mac_filter_list_lock);
9519
9520         i40e_sync_vsi_filters(vsi);
9521
9522         i40e_vsi_delete(vsi);
9523         i40e_vsi_free_q_vectors(vsi);
9524         if (vsi->netdev) {
9525                 free_netdev(vsi->netdev);
9526                 vsi->netdev = NULL;
9527         }
9528         i40e_vsi_clear_rings(vsi);
9529         i40e_vsi_clear(vsi);
9530
9531         /* If this was the last thing on the VEB, except for the
9532          * controlling VSI, remove the VEB, which puts the controlling
9533          * VSI onto the next level down in the switch.
9534          *
9535          * Well, okay, there's one more exception here: don't remove
9536          * the orphan VEBs yet.  We'll wait for an explicit remove request
9537          * from up the network stack.
9538          */
9539         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
9540                 if (pf->vsi[i] &&
9541                     pf->vsi[i]->uplink_seid == uplink_seid &&
9542                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
9543                         n++;      /* count the VSIs */
9544                 }
9545         }
9546         for (i = 0; i < I40E_MAX_VEB; i++) {
9547                 if (!pf->veb[i])
9548                         continue;
9549                 if (pf->veb[i]->uplink_seid == uplink_seid)
9550                         n++;     /* count the VEBs */
9551                 if (pf->veb[i]->seid == uplink_seid)
9552                         veb = pf->veb[i];
9553         }
9554         if (n == 0 && veb && veb->uplink_seid != 0)
9555                 i40e_veb_release(veb);
9556
9557         return 0;
9558 }
9559
9560 /**
9561  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
9562  * @vsi: ptr to the VSI
9563  *
9564  * This should only be called after i40e_vsi_mem_alloc() which allocates the
9565  * corresponding SW VSI structure and initializes num_queue_pairs for the
9566  * newly allocated VSI.
9567  *
9568  * Returns 0 on success or negative on failure
9569  **/
9570 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
9571 {
9572         int ret = -ENOENT;
9573         struct i40e_pf *pf = vsi->back;
9574
9575         if (vsi->q_vectors[0]) {
9576                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
9577                          vsi->seid);
9578                 return -EEXIST;
9579         }
9580
9581         if (vsi->base_vector) {
9582                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
9583                          vsi->seid, vsi->base_vector);
9584                 return -EEXIST;
9585         }
9586
9587         ret = i40e_vsi_alloc_q_vectors(vsi);
9588         if (ret) {
9589                 dev_info(&pf->pdev->dev,
9590                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
9591                          vsi->num_q_vectors, vsi->seid, ret);
9592                 vsi->num_q_vectors = 0;
9593                 goto vector_setup_out;
9594         }
9595
9596         /* In Legacy mode, we do not have to get any other vector since we
9597          * piggyback on the misc/ICR0 for queue interrupts.
9598         */
9599         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
9600                 return ret;
9601         if (vsi->num_q_vectors)
9602                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
9603                                                  vsi->num_q_vectors, vsi->idx);
9604         if (vsi->base_vector < 0) {
9605                 dev_info(&pf->pdev->dev,
9606                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
9607                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
9608                 i40e_vsi_free_q_vectors(vsi);
9609                 ret = -ENOENT;
9610                 goto vector_setup_out;
9611         }
9612
9613 vector_setup_out:
9614         return ret;
9615 }
9616
9617 /**
9618  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
9619  * @vsi: pointer to the vsi.
9620  *
9621  * This re-allocates a vsi's queue resources.
9622  *
9623  * Returns pointer to the successfully allocated and configured VSI sw struct
9624  * on success, otherwise returns NULL on failure.
9625  **/
9626 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
9627 {
9628         struct i40e_pf *pf;
9629         u8 enabled_tc;
9630         int ret;
9631
9632         if (!vsi)
9633                 return NULL;
9634
9635         pf = vsi->back;
9636
9637         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
9638         i40e_vsi_clear_rings(vsi);
9639
9640         i40e_vsi_free_arrays(vsi, false);
9641         i40e_set_num_rings_in_vsi(vsi);
9642         ret = i40e_vsi_alloc_arrays(vsi, false);
9643         if (ret)
9644                 goto err_vsi;
9645
9646         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs, vsi->idx);
9647         if (ret < 0) {
9648                 dev_info(&pf->pdev->dev,
9649                          "failed to get tracking for %d queues for VSI %d err %d\n",
9650                          vsi->alloc_queue_pairs, vsi->seid, ret);
9651                 goto err_vsi;
9652         }
9653         vsi->base_queue = ret;
9654
9655         /* Update the FW view of the VSI. Force a reset of TC and queue
9656          * layout configurations.
9657          */
9658         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
9659         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
9660         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
9661         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
9662
9663         /* assign it some queues */
9664         ret = i40e_alloc_rings(vsi);
9665         if (ret)
9666                 goto err_rings;
9667
9668         /* map all of the rings to the q_vectors */
9669         i40e_vsi_map_rings_to_vectors(vsi);
9670         return vsi;
9671
9672 err_rings:
9673         i40e_vsi_free_q_vectors(vsi);
9674         if (vsi->netdev_registered) {
9675                 vsi->netdev_registered = false;
9676                 unregister_netdev(vsi->netdev);
9677                 free_netdev(vsi->netdev);
9678                 vsi->netdev = NULL;
9679         }
9680         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9681 err_vsi:
9682         i40e_vsi_clear(vsi);
9683         return NULL;
9684 }
9685
9686 /**
9687  * i40e_macaddr_init - explicitly write the mac address filters.
9688  *
9689  * @vsi: pointer to the vsi.
9690  * @macaddr: the MAC address
9691  *
9692  * This is needed when the macaddr has been obtained by other
9693  * means than the default, e.g., from Open Firmware or IDPROM.
9694  * Returns 0 on success, negative on failure
9695  **/
9696 static int i40e_macaddr_init(struct i40e_vsi *vsi, u8 *macaddr)
9697 {
9698         int ret;
9699         struct i40e_aqc_add_macvlan_element_data element;
9700
9701         ret = i40e_aq_mac_address_write(&vsi->back->hw,
9702                                         I40E_AQC_WRITE_TYPE_LAA_WOL,
9703                                         macaddr, NULL);
9704         if (ret) {
9705                 dev_info(&vsi->back->pdev->dev,
9706                          "Addr change for VSI failed: %d\n", ret);
9707                 return -EADDRNOTAVAIL;
9708         }
9709
9710         memset(&element, 0, sizeof(element));
9711         ether_addr_copy(element.mac_addr, macaddr);
9712         element.flags = cpu_to_le16(I40E_AQC_MACVLAN_ADD_PERFECT_MATCH);
9713         ret = i40e_aq_add_macvlan(&vsi->back->hw, vsi->seid, &element, 1, NULL);
9714         if (ret) {
9715                 dev_info(&vsi->back->pdev->dev,
9716                          "add filter failed err %s aq_err %s\n",
9717                          i40e_stat_str(&vsi->back->hw, ret),
9718                          i40e_aq_str(&vsi->back->hw,
9719                                      vsi->back->hw.aq.asq_last_status));
9720         }
9721         return ret;
9722 }
9723
9724 /**
9725  * i40e_vsi_setup - Set up a VSI by a given type
9726  * @pf: board private structure
9727  * @type: VSI type
9728  * @uplink_seid: the switch element to link to
9729  * @param1: usage depends upon VSI type. For VF types, indicates VF id
9730  *
9731  * This allocates the sw VSI structure and its queue resources, then add a VSI
9732  * to the identified VEB.
9733  *
9734  * Returns pointer to the successfully allocated and configure VSI sw struct on
9735  * success, otherwise returns NULL on failure.
9736  **/
9737 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
9738                                 u16 uplink_seid, u32 param1)
9739 {
9740         struct i40e_vsi *vsi = NULL;
9741         struct i40e_veb *veb = NULL;
9742         int ret, i;
9743         int v_idx;
9744
9745         /* The requested uplink_seid must be either
9746          *     - the PF's port seid
9747          *              no VEB is needed because this is the PF
9748          *              or this is a Flow Director special case VSI
9749          *     - seid of an existing VEB
9750          *     - seid of a VSI that owns an existing VEB
9751          *     - seid of a VSI that doesn't own a VEB
9752          *              a new VEB is created and the VSI becomes the owner
9753          *     - seid of the PF VSI, which is what creates the first VEB
9754          *              this is a special case of the previous
9755          *
9756          * Find which uplink_seid we were given and create a new VEB if needed
9757          */
9758         for (i = 0; i < I40E_MAX_VEB; i++) {
9759                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
9760                         veb = pf->veb[i];
9761                         break;
9762                 }
9763         }
9764
9765         if (!veb && uplink_seid != pf->mac_seid) {
9766
9767                 for (i = 0; i < pf->num_alloc_vsi; i++) {
9768                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
9769                                 vsi = pf->vsi[i];
9770                                 break;
9771                         }
9772                 }
9773                 if (!vsi) {
9774                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
9775                                  uplink_seid);
9776                         return NULL;
9777                 }
9778
9779                 if (vsi->uplink_seid == pf->mac_seid)
9780                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
9781                                              vsi->tc_config.enabled_tc);
9782                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
9783                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
9784                                              vsi->tc_config.enabled_tc);
9785                 if (veb) {
9786                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
9787                                 dev_info(&vsi->back->pdev->dev,
9788                                          "New VSI creation error, uplink seid of LAN VSI expected.\n");
9789                                 return NULL;
9790                         }
9791                         /* We come up by default in VEPA mode if SRIOV is not
9792                          * already enabled, in which case we can't force VEPA
9793                          * mode.
9794                          */
9795                         if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
9796                                 veb->bridge_mode = BRIDGE_MODE_VEPA;
9797                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
9798                         }
9799                         i40e_config_bridge_mode(veb);
9800                 }
9801                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
9802                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
9803                                 veb = pf->veb[i];
9804                 }
9805                 if (!veb) {
9806                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
9807                         return NULL;
9808                 }
9809
9810                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
9811                 uplink_seid = veb->seid;
9812         }
9813
9814         /* get vsi sw struct */
9815         v_idx = i40e_vsi_mem_alloc(pf, type);
9816         if (v_idx < 0)
9817                 goto err_alloc;
9818         vsi = pf->vsi[v_idx];
9819         if (!vsi)
9820                 goto err_alloc;
9821         vsi->type = type;
9822         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
9823
9824         if (type == I40E_VSI_MAIN)
9825                 pf->lan_vsi = v_idx;
9826         else if (type == I40E_VSI_SRIOV)
9827                 vsi->vf_id = param1;
9828         /* assign it some queues */
9829         ret = i40e_get_lump(pf, pf->qp_pile, vsi->alloc_queue_pairs,
9830                                 vsi->idx);
9831         if (ret < 0) {
9832                 dev_info(&pf->pdev->dev,
9833                          "failed to get tracking for %d queues for VSI %d err=%d\n",
9834                          vsi->alloc_queue_pairs, vsi->seid, ret);
9835                 goto err_vsi;
9836         }
9837         vsi->base_queue = ret;
9838
9839         /* get a VSI from the hardware */
9840         vsi->uplink_seid = uplink_seid;
9841         ret = i40e_add_vsi(vsi);
9842         if (ret)
9843                 goto err_vsi;
9844
9845         switch (vsi->type) {
9846         /* setup the netdev if needed */
9847         case I40E_VSI_MAIN:
9848                 /* Apply relevant filters if a platform-specific mac
9849                  * address was selected.
9850                  */
9851                 if (!!(pf->flags & I40E_FLAG_PF_MAC)) {
9852                         ret = i40e_macaddr_init(vsi, pf->hw.mac.addr);
9853                         if (ret) {
9854                                 dev_warn(&pf->pdev->dev,
9855                                          "could not set up macaddr; err %d\n",
9856                                          ret);
9857                         }
9858                 }
9859         case I40E_VSI_VMDQ2:
9860         case I40E_VSI_FCOE:
9861                 ret = i40e_config_netdev(vsi);
9862                 if (ret)
9863                         goto err_netdev;
9864                 ret = register_netdev(vsi->netdev);
9865                 if (ret)
9866                         goto err_netdev;
9867                 vsi->netdev_registered = true;
9868                 netif_carrier_off(vsi->netdev);
9869 #ifdef CONFIG_I40E_DCB
9870                 /* Setup DCB netlink interface */
9871                 i40e_dcbnl_setup(vsi);
9872 #endif /* CONFIG_I40E_DCB */
9873                 /* fall through */
9874
9875         case I40E_VSI_FDIR:
9876                 /* set up vectors and rings if needed */
9877                 ret = i40e_vsi_setup_vectors(vsi);
9878                 if (ret)
9879                         goto err_msix;
9880
9881                 ret = i40e_alloc_rings(vsi);
9882                 if (ret)
9883                         goto err_rings;
9884
9885                 /* map all of the rings to the q_vectors */
9886                 i40e_vsi_map_rings_to_vectors(vsi);
9887
9888                 i40e_vsi_reset_stats(vsi);
9889                 break;
9890
9891         default:
9892                 /* no netdev or rings for the other VSI types */
9893                 break;
9894         }
9895
9896         if ((pf->flags & I40E_FLAG_RSS_AQ_CAPABLE) &&
9897             (vsi->type == I40E_VSI_VMDQ2)) {
9898                 ret = i40e_vsi_config_rss(vsi);
9899         }
9900         return vsi;
9901
9902 err_rings:
9903         i40e_vsi_free_q_vectors(vsi);
9904 err_msix:
9905         if (vsi->netdev_registered) {
9906                 vsi->netdev_registered = false;
9907                 unregister_netdev(vsi->netdev);
9908                 free_netdev(vsi->netdev);
9909                 vsi->netdev = NULL;
9910         }
9911 err_netdev:
9912         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
9913 err_vsi:
9914         i40e_vsi_clear(vsi);
9915 err_alloc:
9916         return NULL;
9917 }
9918
9919 /**
9920  * i40e_veb_get_bw_info - Query VEB BW information
9921  * @veb: the veb to query
9922  *
9923  * Query the Tx scheduler BW configuration data for given VEB
9924  **/
9925 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
9926 {
9927         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
9928         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
9929         struct i40e_pf *pf = veb->pf;
9930         struct i40e_hw *hw = &pf->hw;
9931         u32 tc_bw_max;
9932         int ret = 0;
9933         int i;
9934
9935         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
9936                                                   &bw_data, NULL);
9937         if (ret) {
9938                 dev_info(&pf->pdev->dev,
9939                          "query veb bw config failed, err %s aq_err %s\n",
9940                          i40e_stat_str(&pf->hw, ret),
9941                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9942                 goto out;
9943         }
9944
9945         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
9946                                                    &ets_data, NULL);
9947         if (ret) {
9948                 dev_info(&pf->pdev->dev,
9949                          "query veb bw ets config failed, err %s aq_err %s\n",
9950                          i40e_stat_str(&pf->hw, ret),
9951                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
9952                 goto out;
9953         }
9954
9955         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
9956         veb->bw_max_quanta = ets_data.tc_bw_max;
9957         veb->is_abs_credits = bw_data.absolute_credits_enable;
9958         veb->enabled_tc = ets_data.tc_valid_bits;
9959         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
9960                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
9961         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
9962                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
9963                 veb->bw_tc_limit_credits[i] =
9964                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
9965                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
9966         }
9967
9968 out:
9969         return ret;
9970 }
9971
9972 /**
9973  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
9974  * @pf: board private structure
9975  *
9976  * On error: returns error code (negative)
9977  * On success: returns vsi index in PF (positive)
9978  **/
9979 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
9980 {
9981         int ret = -ENOENT;
9982         struct i40e_veb *veb;
9983         int i;
9984
9985         /* Need to protect the allocation of switch elements at the PF level */
9986         mutex_lock(&pf->switch_mutex);
9987
9988         /* VEB list may be fragmented if VEB creation/destruction has
9989          * been happening.  We can afford to do a quick scan to look
9990          * for any free slots in the list.
9991          *
9992          * find next empty veb slot, looping back around if necessary
9993          */
9994         i = 0;
9995         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
9996                 i++;
9997         if (i >= I40E_MAX_VEB) {
9998                 ret = -ENOMEM;
9999                 goto err_alloc_veb;  /* out of VEB slots! */
10000         }
10001
10002         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
10003         if (!veb) {
10004                 ret = -ENOMEM;
10005                 goto err_alloc_veb;
10006         }
10007         veb->pf = pf;
10008         veb->idx = i;
10009         veb->enabled_tc = 1;
10010
10011         pf->veb[i] = veb;
10012         ret = i;
10013 err_alloc_veb:
10014         mutex_unlock(&pf->switch_mutex);
10015         return ret;
10016 }
10017
10018 /**
10019  * i40e_switch_branch_release - Delete a branch of the switch tree
10020  * @branch: where to start deleting
10021  *
10022  * This uses recursion to find the tips of the branch to be
10023  * removed, deleting until we get back to and can delete this VEB.
10024  **/
10025 static void i40e_switch_branch_release(struct i40e_veb *branch)
10026 {
10027         struct i40e_pf *pf = branch->pf;
10028         u16 branch_seid = branch->seid;
10029         u16 veb_idx = branch->idx;
10030         int i;
10031
10032         /* release any VEBs on this VEB - RECURSION */
10033         for (i = 0; i < I40E_MAX_VEB; i++) {
10034                 if (!pf->veb[i])
10035                         continue;
10036                 if (pf->veb[i]->uplink_seid == branch->seid)
10037                         i40e_switch_branch_release(pf->veb[i]);
10038         }
10039
10040         /* Release the VSIs on this VEB, but not the owner VSI.
10041          *
10042          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
10043          *       the VEB itself, so don't use (*branch) after this loop.
10044          */
10045         for (i = 0; i < pf->num_alloc_vsi; i++) {
10046                 if (!pf->vsi[i])
10047                         continue;
10048                 if (pf->vsi[i]->uplink_seid == branch_seid &&
10049                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
10050                         i40e_vsi_release(pf->vsi[i]);
10051                 }
10052         }
10053
10054         /* There's one corner case where the VEB might not have been
10055          * removed, so double check it here and remove it if needed.
10056          * This case happens if the veb was created from the debugfs
10057          * commands and no VSIs were added to it.
10058          */
10059         if (pf->veb[veb_idx])
10060                 i40e_veb_release(pf->veb[veb_idx]);
10061 }
10062
10063 /**
10064  * i40e_veb_clear - remove veb struct
10065  * @veb: the veb to remove
10066  **/
10067 static void i40e_veb_clear(struct i40e_veb *veb)
10068 {
10069         if (!veb)
10070                 return;
10071
10072         if (veb->pf) {
10073                 struct i40e_pf *pf = veb->pf;
10074
10075                 mutex_lock(&pf->switch_mutex);
10076                 if (pf->veb[veb->idx] == veb)
10077                         pf->veb[veb->idx] = NULL;
10078                 mutex_unlock(&pf->switch_mutex);
10079         }
10080
10081         kfree(veb);
10082 }
10083
10084 /**
10085  * i40e_veb_release - Delete a VEB and free its resources
10086  * @veb: the VEB being removed
10087  **/
10088 void i40e_veb_release(struct i40e_veb *veb)
10089 {
10090         struct i40e_vsi *vsi = NULL;
10091         struct i40e_pf *pf;
10092         int i, n = 0;
10093
10094         pf = veb->pf;
10095
10096         /* find the remaining VSI and check for extras */
10097         for (i = 0; i < pf->num_alloc_vsi; i++) {
10098                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
10099                         n++;
10100                         vsi = pf->vsi[i];
10101                 }
10102         }
10103         if (n != 1) {
10104                 dev_info(&pf->pdev->dev,
10105                          "can't remove VEB %d with %d VSIs left\n",
10106                          veb->seid, n);
10107                 return;
10108         }
10109
10110         /* move the remaining VSI to uplink veb */
10111         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
10112         if (veb->uplink_seid) {
10113                 vsi->uplink_seid = veb->uplink_seid;
10114                 if (veb->uplink_seid == pf->mac_seid)
10115                         vsi->veb_idx = I40E_NO_VEB;
10116                 else
10117                         vsi->veb_idx = veb->veb_idx;
10118         } else {
10119                 /* floating VEB */
10120                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
10121                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
10122         }
10123
10124         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
10125         i40e_veb_clear(veb);
10126 }
10127
10128 /**
10129  * i40e_add_veb - create the VEB in the switch
10130  * @veb: the VEB to be instantiated
10131  * @vsi: the controlling VSI
10132  **/
10133 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
10134 {
10135         struct i40e_pf *pf = veb->pf;
10136         bool is_default = veb->pf->cur_promisc;
10137         bool enable_stats = !!(pf->flags & I40E_FLAG_VEB_STATS_ENABLED);
10138         int ret;
10139
10140         /* get a VEB from the hardware */
10141         ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid,
10142                               veb->enabled_tc, is_default,
10143                               &veb->seid, enable_stats, NULL);
10144         if (ret) {
10145                 dev_info(&pf->pdev->dev,
10146                          "couldn't add VEB, err %s aq_err %s\n",
10147                          i40e_stat_str(&pf->hw, ret),
10148                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10149                 return -EPERM;
10150         }
10151
10152         /* get statistics counter */
10153         ret = i40e_aq_get_veb_parameters(&pf->hw, veb->seid, NULL, NULL,
10154                                          &veb->stats_idx, NULL, NULL, NULL);
10155         if (ret) {
10156                 dev_info(&pf->pdev->dev,
10157                          "couldn't get VEB statistics idx, err %s aq_err %s\n",
10158                          i40e_stat_str(&pf->hw, ret),
10159                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10160                 return -EPERM;
10161         }
10162         ret = i40e_veb_get_bw_info(veb);
10163         if (ret) {
10164                 dev_info(&pf->pdev->dev,
10165                          "couldn't get VEB bw info, err %s aq_err %s\n",
10166                          i40e_stat_str(&pf->hw, ret),
10167                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10168                 i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
10169                 return -ENOENT;
10170         }
10171
10172         vsi->uplink_seid = veb->seid;
10173         vsi->veb_idx = veb->idx;
10174         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
10175
10176         return 0;
10177 }
10178
10179 /**
10180  * i40e_veb_setup - Set up a VEB
10181  * @pf: board private structure
10182  * @flags: VEB setup flags
10183  * @uplink_seid: the switch element to link to
10184  * @vsi_seid: the initial VSI seid
10185  * @enabled_tc: Enabled TC bit-map
10186  *
10187  * This allocates the sw VEB structure and links it into the switch
10188  * It is possible and legal for this to be a duplicate of an already
10189  * existing VEB.  It is also possible for both uplink and vsi seids
10190  * to be zero, in order to create a floating VEB.
10191  *
10192  * Returns pointer to the successfully allocated VEB sw struct on
10193  * success, otherwise returns NULL on failure.
10194  **/
10195 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
10196                                 u16 uplink_seid, u16 vsi_seid,
10197                                 u8 enabled_tc)
10198 {
10199         struct i40e_veb *veb, *uplink_veb = NULL;
10200         int vsi_idx, veb_idx;
10201         int ret;
10202
10203         /* if one seid is 0, the other must be 0 to create a floating relay */
10204         if ((uplink_seid == 0 || vsi_seid == 0) &&
10205             (uplink_seid + vsi_seid != 0)) {
10206                 dev_info(&pf->pdev->dev,
10207                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
10208                          uplink_seid, vsi_seid);
10209                 return NULL;
10210         }
10211
10212         /* make sure there is such a vsi and uplink */
10213         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
10214                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
10215                         break;
10216         if (vsi_idx >= pf->num_alloc_vsi && vsi_seid != 0) {
10217                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
10218                          vsi_seid);
10219                 return NULL;
10220         }
10221
10222         if (uplink_seid && uplink_seid != pf->mac_seid) {
10223                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
10224                         if (pf->veb[veb_idx] &&
10225                             pf->veb[veb_idx]->seid == uplink_seid) {
10226                                 uplink_veb = pf->veb[veb_idx];
10227                                 break;
10228                         }
10229                 }
10230                 if (!uplink_veb) {
10231                         dev_info(&pf->pdev->dev,
10232                                  "uplink seid %d not found\n", uplink_seid);
10233                         return NULL;
10234                 }
10235         }
10236
10237         /* get veb sw struct */
10238         veb_idx = i40e_veb_mem_alloc(pf);
10239         if (veb_idx < 0)
10240                 goto err_alloc;
10241         veb = pf->veb[veb_idx];
10242         veb->flags = flags;
10243         veb->uplink_seid = uplink_seid;
10244         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
10245         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
10246
10247         /* create the VEB in the switch */
10248         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
10249         if (ret)
10250                 goto err_veb;
10251         if (vsi_idx == pf->lan_vsi)
10252                 pf->lan_veb = veb->idx;
10253
10254         return veb;
10255
10256 err_veb:
10257         i40e_veb_clear(veb);
10258 err_alloc:
10259         return NULL;
10260 }
10261
10262 /**
10263  * i40e_setup_pf_switch_element - set PF vars based on switch type
10264  * @pf: board private structure
10265  * @ele: element we are building info from
10266  * @num_reported: total number of elements
10267  * @printconfig: should we print the contents
10268  *
10269  * helper function to assist in extracting a few useful SEID values.
10270  **/
10271 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
10272                                 struct i40e_aqc_switch_config_element_resp *ele,
10273                                 u16 num_reported, bool printconfig)
10274 {
10275         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
10276         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
10277         u8 element_type = ele->element_type;
10278         u16 seid = le16_to_cpu(ele->seid);
10279
10280         if (printconfig)
10281                 dev_info(&pf->pdev->dev,
10282                          "type=%d seid=%d uplink=%d downlink=%d\n",
10283                          element_type, seid, uplink_seid, downlink_seid);
10284
10285         switch (element_type) {
10286         case I40E_SWITCH_ELEMENT_TYPE_MAC:
10287                 pf->mac_seid = seid;
10288                 break;
10289         case I40E_SWITCH_ELEMENT_TYPE_VEB:
10290                 /* Main VEB? */
10291                 if (uplink_seid != pf->mac_seid)
10292                         break;
10293                 if (pf->lan_veb == I40E_NO_VEB) {
10294                         int v;
10295
10296                         /* find existing or else empty VEB */
10297                         for (v = 0; v < I40E_MAX_VEB; v++) {
10298                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
10299                                         pf->lan_veb = v;
10300                                         break;
10301                                 }
10302                         }
10303                         if (pf->lan_veb == I40E_NO_VEB) {
10304                                 v = i40e_veb_mem_alloc(pf);
10305                                 if (v < 0)
10306                                         break;
10307                                 pf->lan_veb = v;
10308                         }
10309                 }
10310
10311                 pf->veb[pf->lan_veb]->seid = seid;
10312                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
10313                 pf->veb[pf->lan_veb]->pf = pf;
10314                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
10315                 break;
10316         case I40E_SWITCH_ELEMENT_TYPE_VSI:
10317                 if (num_reported != 1)
10318                         break;
10319                 /* This is immediately after a reset so we can assume this is
10320                  * the PF's VSI
10321                  */
10322                 pf->mac_seid = uplink_seid;
10323                 pf->pf_seid = downlink_seid;
10324                 pf->main_vsi_seid = seid;
10325                 if (printconfig)
10326                         dev_info(&pf->pdev->dev,
10327                                  "pf_seid=%d main_vsi_seid=%d\n",
10328                                  pf->pf_seid, pf->main_vsi_seid);
10329                 break;
10330         case I40E_SWITCH_ELEMENT_TYPE_PF:
10331         case I40E_SWITCH_ELEMENT_TYPE_VF:
10332         case I40E_SWITCH_ELEMENT_TYPE_EMP:
10333         case I40E_SWITCH_ELEMENT_TYPE_BMC:
10334         case I40E_SWITCH_ELEMENT_TYPE_PE:
10335         case I40E_SWITCH_ELEMENT_TYPE_PA:
10336                 /* ignore these for now */
10337                 break;
10338         default:
10339                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
10340                          element_type, seid);
10341                 break;
10342         }
10343 }
10344
10345 /**
10346  * i40e_fetch_switch_configuration - Get switch config from firmware
10347  * @pf: board private structure
10348  * @printconfig: should we print the contents
10349  *
10350  * Get the current switch configuration from the device and
10351  * extract a few useful SEID values.
10352  **/
10353 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
10354 {
10355         struct i40e_aqc_get_switch_config_resp *sw_config;
10356         u16 next_seid = 0;
10357         int ret = 0;
10358         u8 *aq_buf;
10359         int i;
10360
10361         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
10362         if (!aq_buf)
10363                 return -ENOMEM;
10364
10365         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
10366         do {
10367                 u16 num_reported, num_total;
10368
10369                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
10370                                                 I40E_AQ_LARGE_BUF,
10371                                                 &next_seid, NULL);
10372                 if (ret) {
10373                         dev_info(&pf->pdev->dev,
10374                                  "get switch config failed err %s aq_err %s\n",
10375                                  i40e_stat_str(&pf->hw, ret),
10376                                  i40e_aq_str(&pf->hw,
10377                                              pf->hw.aq.asq_last_status));
10378                         kfree(aq_buf);
10379                         return -ENOENT;
10380                 }
10381
10382                 num_reported = le16_to_cpu(sw_config->header.num_reported);
10383                 num_total = le16_to_cpu(sw_config->header.num_total);
10384
10385                 if (printconfig)
10386                         dev_info(&pf->pdev->dev,
10387                                  "header: %d reported %d total\n",
10388                                  num_reported, num_total);
10389
10390                 for (i = 0; i < num_reported; i++) {
10391                         struct i40e_aqc_switch_config_element_resp *ele =
10392                                 &sw_config->element[i];
10393
10394                         i40e_setup_pf_switch_element(pf, ele, num_reported,
10395                                                      printconfig);
10396                 }
10397         } while (next_seid != 0);
10398
10399         kfree(aq_buf);
10400         return ret;
10401 }
10402
10403 /**
10404  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
10405  * @pf: board private structure
10406  * @reinit: if the Main VSI needs to re-initialized.
10407  *
10408  * Returns 0 on success, negative value on failure
10409  **/
10410 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
10411 {
10412         u16 flags = 0;
10413         int ret;
10414
10415         /* find out what's out there already */
10416         ret = i40e_fetch_switch_configuration(pf, false);
10417         if (ret) {
10418                 dev_info(&pf->pdev->dev,
10419                          "couldn't fetch switch config, err %s aq_err %s\n",
10420                          i40e_stat_str(&pf->hw, ret),
10421                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10422                 return ret;
10423         }
10424         i40e_pf_reset_stats(pf);
10425
10426         /* set the switch config bit for the whole device to
10427          * support limited promisc or true promisc
10428          * when user requests promisc. The default is limited
10429          * promisc.
10430         */
10431
10432         if ((pf->hw.pf_id == 0) &&
10433             !(pf->flags & I40E_FLAG_TRUE_PROMISC_SUPPORT))
10434                 flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
10435
10436         if (pf->hw.pf_id == 0) {
10437                 u16 valid_flags;
10438
10439                 valid_flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
10440                 ret = i40e_aq_set_switch_config(&pf->hw, flags, valid_flags,
10441                                                 NULL);
10442                 if (ret && pf->hw.aq.asq_last_status != I40E_AQ_RC_ESRCH) {
10443                         dev_info(&pf->pdev->dev,
10444                                  "couldn't set switch config bits, err %s aq_err %s\n",
10445                                  i40e_stat_str(&pf->hw, ret),
10446                                  i40e_aq_str(&pf->hw,
10447                                              pf->hw.aq.asq_last_status));
10448                         /* not a fatal problem, just keep going */
10449                 }
10450         }
10451
10452         /* first time setup */
10453         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
10454                 struct i40e_vsi *vsi = NULL;
10455                 u16 uplink_seid;
10456
10457                 /* Set up the PF VSI associated with the PF's main VSI
10458                  * that is already in the HW switch
10459                  */
10460                 if (pf->lan_veb != I40E_NO_VEB && pf->veb[pf->lan_veb])
10461                         uplink_seid = pf->veb[pf->lan_veb]->seid;
10462                 else
10463                         uplink_seid = pf->mac_seid;
10464                 if (pf->lan_vsi == I40E_NO_VSI)
10465                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
10466                 else if (reinit)
10467                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
10468                 if (!vsi) {
10469                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
10470                         i40e_fdir_teardown(pf);
10471                         return -EAGAIN;
10472                 }
10473         } else {
10474                 /* force a reset of TC and queue layout configurations */
10475                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
10476
10477                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
10478                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
10479                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
10480         }
10481         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
10482
10483         i40e_fdir_sb_setup(pf);
10484
10485         /* Setup static PF queue filter control settings */
10486         ret = i40e_setup_pf_filter_control(pf);
10487         if (ret) {
10488                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
10489                          ret);
10490                 /* Failure here should not stop continuing other steps */
10491         }
10492
10493         /* enable RSS in the HW, even for only one queue, as the stack can use
10494          * the hash
10495          */
10496         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
10497                 i40e_pf_config_rss(pf);
10498
10499         /* fill in link information and enable LSE reporting */
10500         i40e_update_link_info(&pf->hw);
10501         i40e_link_event(pf);
10502
10503         /* Initialize user-specific link properties */
10504         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
10505                                   I40E_AQ_AN_COMPLETED) ? true : false);
10506
10507         i40e_ptp_init(pf);
10508
10509         return ret;
10510 }
10511
10512 /**
10513  * i40e_determine_queue_usage - Work out queue distribution
10514  * @pf: board private structure
10515  **/
10516 static void i40e_determine_queue_usage(struct i40e_pf *pf)
10517 {
10518         int queues_left;
10519
10520         pf->num_lan_qps = 0;
10521 #ifdef I40E_FCOE
10522         pf->num_fcoe_qps = 0;
10523 #endif
10524
10525         /* Find the max queues to be put into basic use.  We'll always be
10526          * using TC0, whether or not DCB is running, and TC0 will get the
10527          * big RSS set.
10528          */
10529         queues_left = pf->hw.func_caps.num_tx_qp;
10530
10531         if ((queues_left == 1) ||
10532             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
10533                 /* one qp for PF, no queues for anything else */
10534                 queues_left = 0;
10535                 pf->alloc_rss_size = pf->num_lan_qps = 1;
10536
10537                 /* make sure all the fancies are disabled */
10538                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10539                                I40E_FLAG_IWARP_ENABLED  |
10540 #ifdef I40E_FCOE
10541                                I40E_FLAG_FCOE_ENABLED   |
10542 #endif
10543                                I40E_FLAG_FD_SB_ENABLED  |
10544                                I40E_FLAG_FD_ATR_ENABLED |
10545                                I40E_FLAG_DCB_CAPABLE    |
10546                                I40E_FLAG_SRIOV_ENABLED  |
10547                                I40E_FLAG_VMDQ_ENABLED);
10548         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
10549                                   I40E_FLAG_FD_SB_ENABLED |
10550                                   I40E_FLAG_FD_ATR_ENABLED |
10551                                   I40E_FLAG_DCB_CAPABLE))) {
10552                 /* one qp for PF */
10553                 pf->alloc_rss_size = pf->num_lan_qps = 1;
10554                 queues_left -= pf->num_lan_qps;
10555
10556                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
10557                                I40E_FLAG_IWARP_ENABLED  |
10558 #ifdef I40E_FCOE
10559                                I40E_FLAG_FCOE_ENABLED   |
10560 #endif
10561                                I40E_FLAG_FD_SB_ENABLED  |
10562                                I40E_FLAG_FD_ATR_ENABLED |
10563                                I40E_FLAG_DCB_ENABLED    |
10564                                I40E_FLAG_VMDQ_ENABLED);
10565         } else {
10566                 /* Not enough queues for all TCs */
10567                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
10568                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
10569                         pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10570                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
10571                 }
10572                 pf->num_lan_qps = max_t(int, pf->rss_size_max,
10573                                         num_online_cpus());
10574                 pf->num_lan_qps = min_t(int, pf->num_lan_qps,
10575                                         pf->hw.func_caps.num_tx_qp);
10576
10577                 queues_left -= pf->num_lan_qps;
10578         }
10579
10580 #ifdef I40E_FCOE
10581         if (pf->flags & I40E_FLAG_FCOE_ENABLED) {
10582                 if (I40E_DEFAULT_FCOE <= queues_left) {
10583                         pf->num_fcoe_qps = I40E_DEFAULT_FCOE;
10584                 } else if (I40E_MINIMUM_FCOE <= queues_left) {
10585                         pf->num_fcoe_qps = I40E_MINIMUM_FCOE;
10586                 } else {
10587                         pf->num_fcoe_qps = 0;
10588                         pf->flags &= ~I40E_FLAG_FCOE_ENABLED;
10589                         dev_info(&pf->pdev->dev, "not enough queues for FCoE. FCoE feature will be disabled\n");
10590                 }
10591
10592                 queues_left -= pf->num_fcoe_qps;
10593         }
10594
10595 #endif
10596         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10597                 if (queues_left > 1) {
10598                         queues_left -= 1; /* save 1 queue for FD */
10599                 } else {
10600                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
10601                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
10602                 }
10603         }
10604
10605         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
10606             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
10607                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
10608                                         (queues_left / pf->num_vf_qps));
10609                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
10610         }
10611
10612         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
10613             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
10614                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
10615                                           (queues_left / pf->num_vmdq_qps));
10616                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
10617         }
10618
10619         pf->queues_left = queues_left;
10620         dev_dbg(&pf->pdev->dev,
10621                 "qs_avail=%d FD SB=%d lan_qs=%d lan_tc0=%d vf=%d*%d vmdq=%d*%d, remaining=%d\n",
10622                 pf->hw.func_caps.num_tx_qp,
10623                 !!(pf->flags & I40E_FLAG_FD_SB_ENABLED),
10624                 pf->num_lan_qps, pf->alloc_rss_size, pf->num_req_vfs,
10625                 pf->num_vf_qps, pf->num_vmdq_vsis, pf->num_vmdq_qps,
10626                 queues_left);
10627 #ifdef I40E_FCOE
10628         dev_dbg(&pf->pdev->dev, "fcoe queues = %d\n", pf->num_fcoe_qps);
10629 #endif
10630 }
10631
10632 /**
10633  * i40e_setup_pf_filter_control - Setup PF static filter control
10634  * @pf: PF to be setup
10635  *
10636  * i40e_setup_pf_filter_control sets up a PF's initial filter control
10637  * settings. If PE/FCoE are enabled then it will also set the per PF
10638  * based filter sizes required for them. It also enables Flow director,
10639  * ethertype and macvlan type filter settings for the pf.
10640  *
10641  * Returns 0 on success, negative on failure
10642  **/
10643 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
10644 {
10645         struct i40e_filter_control_settings *settings = &pf->filter_settings;
10646
10647         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
10648
10649         /* Flow Director is enabled */
10650         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
10651                 settings->enable_fdir = true;
10652
10653         /* Ethtype and MACVLAN filters enabled for PF */
10654         settings->enable_ethtype = true;
10655         settings->enable_macvlan = true;
10656
10657         if (i40e_set_filter_control(&pf->hw, settings))
10658                 return -ENOENT;
10659
10660         return 0;
10661 }
10662
10663 #define INFO_STRING_LEN 255
10664 #define REMAIN(__x) (INFO_STRING_LEN - (__x))
10665 static void i40e_print_features(struct i40e_pf *pf)
10666 {
10667         struct i40e_hw *hw = &pf->hw;
10668         char *buf;
10669         int i;
10670
10671         buf = kmalloc(INFO_STRING_LEN, GFP_KERNEL);
10672         if (!buf)
10673                 return;
10674
10675         i = snprintf(buf, INFO_STRING_LEN, "Features: PF-id[%d]", hw->pf_id);
10676 #ifdef CONFIG_PCI_IOV
10677         i += snprintf(&buf[i], REMAIN(i), " VFs: %d", pf->num_req_vfs);
10678 #endif
10679         i += snprintf(&buf[i], REMAIN(i), " VSIs: %d QP: %d",
10680                       pf->hw.func_caps.num_vsis,
10681                       pf->vsi[pf->lan_vsi]->num_queue_pairs);
10682         if (pf->flags & I40E_FLAG_RSS_ENABLED)
10683                 i += snprintf(&buf[i], REMAIN(i), " RSS");
10684         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
10685                 i += snprintf(&buf[i], REMAIN(i), " FD_ATR");
10686         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
10687                 i += snprintf(&buf[i], REMAIN(i), " FD_SB");
10688                 i += snprintf(&buf[i], REMAIN(i), " NTUPLE");
10689         }
10690         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
10691                 i += snprintf(&buf[i], REMAIN(i), " DCB");
10692 #if IS_ENABLED(CONFIG_VXLAN)
10693         i += snprintf(&buf[i], REMAIN(i), " VxLAN");
10694 #endif
10695 #if IS_ENABLED(CONFIG_GENEVE)
10696         i += snprintf(&buf[i], REMAIN(i), " Geneve");
10697 #endif
10698         if (pf->flags & I40E_FLAG_PTP)
10699                 i += snprintf(&buf[i], REMAIN(i), " PTP");
10700 #ifdef I40E_FCOE
10701         if (pf->flags & I40E_FLAG_FCOE_ENABLED)
10702                 i += snprintf(&buf[i], REMAIN(i), " FCOE");
10703 #endif
10704         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
10705                 i += snprintf(&buf[i], REMAIN(i), " VEB");
10706         else
10707                 i += snprintf(&buf[i], REMAIN(i), " VEPA");
10708
10709         dev_info(&pf->pdev->dev, "%s\n", buf);
10710         kfree(buf);
10711         WARN_ON(i > INFO_STRING_LEN);
10712 }
10713
10714 /**
10715  * i40e_get_platform_mac_addr - get platform-specific MAC address
10716  *
10717  * @pdev: PCI device information struct
10718  * @pf: board private structure
10719  *
10720  * Look up the MAC address in Open Firmware  on systems that support it,
10721  * and use IDPROM on SPARC if no OF address is found. On return, the
10722  * I40E_FLAG_PF_MAC will be wset in pf->flags if a platform-specific value
10723  * has been selected.
10724  **/
10725 static void i40e_get_platform_mac_addr(struct pci_dev *pdev, struct i40e_pf *pf)
10726 {
10727         pf->flags &= ~I40E_FLAG_PF_MAC;
10728         if (!eth_platform_get_mac_address(&pdev->dev, pf->hw.mac.addr))
10729                 pf->flags |= I40E_FLAG_PF_MAC;
10730 }
10731
10732 /**
10733  * i40e_probe - Device initialization routine
10734  * @pdev: PCI device information struct
10735  * @ent: entry in i40e_pci_tbl
10736  *
10737  * i40e_probe initializes a PF identified by a pci_dev structure.
10738  * The OS initialization, configuring of the PF private structure,
10739  * and a hardware reset occur.
10740  *
10741  * Returns 0 on success, negative on failure
10742  **/
10743 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
10744 {
10745         struct i40e_aq_get_phy_abilities_resp abilities;
10746         struct i40e_pf *pf;
10747         struct i40e_hw *hw;
10748         static u16 pfs_found;
10749         u16 wol_nvm_bits;
10750         u16 link_status;
10751         int err;
10752         u32 val;
10753         u32 i;
10754         u8 set_fc_aq_fail;
10755
10756         err = pci_enable_device_mem(pdev);
10757         if (err)
10758                 return err;
10759
10760         /* set up for high or low dma */
10761         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
10762         if (err) {
10763                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
10764                 if (err) {
10765                         dev_err(&pdev->dev,
10766                                 "DMA configuration failed: 0x%x\n", err);
10767                         goto err_dma;
10768                 }
10769         }
10770
10771         /* set up pci connections */
10772         err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
10773                                            IORESOURCE_MEM), i40e_driver_name);
10774         if (err) {
10775                 dev_info(&pdev->dev,
10776                          "pci_request_selected_regions failed %d\n", err);
10777                 goto err_pci_reg;
10778         }
10779
10780         pci_enable_pcie_error_reporting(pdev);
10781         pci_set_master(pdev);
10782
10783         /* Now that we have a PCI connection, we need to do the
10784          * low level device setup.  This is primarily setting up
10785          * the Admin Queue structures and then querying for the
10786          * device's current profile information.
10787          */
10788         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
10789         if (!pf) {
10790                 err = -ENOMEM;
10791                 goto err_pf_alloc;
10792         }
10793         pf->next_vsi = 0;
10794         pf->pdev = pdev;
10795         set_bit(__I40E_DOWN, &pf->state);
10796
10797         hw = &pf->hw;
10798         hw->back = pf;
10799
10800         pf->ioremap_len = min_t(int, pci_resource_len(pdev, 0),
10801                                 I40E_MAX_CSR_SPACE);
10802
10803         hw->hw_addr = ioremap(pci_resource_start(pdev, 0), pf->ioremap_len);
10804         if (!hw->hw_addr) {
10805                 err = -EIO;
10806                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
10807                          (unsigned int)pci_resource_start(pdev, 0),
10808                          pf->ioremap_len, err);
10809                 goto err_ioremap;
10810         }
10811         hw->vendor_id = pdev->vendor;
10812         hw->device_id = pdev->device;
10813         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
10814         hw->subsystem_vendor_id = pdev->subsystem_vendor;
10815         hw->subsystem_device_id = pdev->subsystem_device;
10816         hw->bus.device = PCI_SLOT(pdev->devfn);
10817         hw->bus.func = PCI_FUNC(pdev->devfn);
10818         pf->instance = pfs_found;
10819
10820         /* set up the locks for the AQ, do this only once in probe
10821          * and destroy them only once in remove
10822          */
10823         mutex_init(&hw->aq.asq_mutex);
10824         mutex_init(&hw->aq.arq_mutex);
10825
10826         if (debug != -1) {
10827                 pf->msg_enable = pf->hw.debug_mask;
10828                 pf->msg_enable = debug;
10829         }
10830
10831         /* do a special CORER for clearing PXE mode once at init */
10832         if (hw->revision_id == 0 &&
10833             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
10834                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
10835                 i40e_flush(hw);
10836                 msleep(200);
10837                 pf->corer_count++;
10838
10839                 i40e_clear_pxe_mode(hw);
10840         }
10841
10842         /* Reset here to make sure all is clean and to define PF 'n' */
10843         i40e_clear_hw(hw);
10844         err = i40e_pf_reset(hw);
10845         if (err) {
10846                 dev_info(&pdev->dev, "Initial pf_reset failed: %d\n", err);
10847                 goto err_pf_reset;
10848         }
10849         pf->pfr_count++;
10850
10851         hw->aq.num_arq_entries = I40E_AQ_LEN;
10852         hw->aq.num_asq_entries = I40E_AQ_LEN;
10853         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10854         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
10855         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
10856
10857         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
10858                  "%s-%s:misc",
10859                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
10860
10861         err = i40e_init_shared_code(hw);
10862         if (err) {
10863                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
10864                          err);
10865                 goto err_pf_reset;
10866         }
10867
10868         /* set up a default setting for link flow control */
10869         pf->hw.fc.requested_mode = I40E_FC_NONE;
10870
10871         err = i40e_init_adminq(hw);
10872         if (err) {
10873                 if (err == I40E_ERR_FIRMWARE_API_VERSION)
10874                         dev_info(&pdev->dev,
10875                                  "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");
10876                 else
10877                         dev_info(&pdev->dev,
10878                                  "The driver for the device stopped because the device firmware failed to init. Try updating your NVM image.\n");
10879
10880                 goto err_pf_reset;
10881         }
10882
10883         /* provide nvm, fw, api versions */
10884         dev_info(&pdev->dev, "fw %d.%d.%05d api %d.%d nvm %s\n",
10885                  hw->aq.fw_maj_ver, hw->aq.fw_min_ver, hw->aq.fw_build,
10886                  hw->aq.api_maj_ver, hw->aq.api_min_ver,
10887                  i40e_nvm_version_str(hw));
10888
10889         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
10890             hw->aq.api_min_ver > I40E_FW_API_VERSION_MINOR)
10891                 dev_info(&pdev->dev,
10892                          "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");
10893         else if (hw->aq.api_maj_ver < I40E_FW_API_VERSION_MAJOR ||
10894                  hw->aq.api_min_ver < (I40E_FW_API_VERSION_MINOR - 1))
10895                 dev_info(&pdev->dev,
10896                          "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
10897
10898         i40e_verify_eeprom(pf);
10899
10900         /* Rev 0 hardware was never productized */
10901         if (hw->revision_id < 1)
10902                 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");
10903
10904         i40e_clear_pxe_mode(hw);
10905         err = i40e_get_capabilities(pf);
10906         if (err)
10907                 goto err_adminq_setup;
10908
10909         err = i40e_sw_init(pf);
10910         if (err) {
10911                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
10912                 goto err_sw_init;
10913         }
10914
10915         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
10916                                 hw->func_caps.num_rx_qp,
10917                                 pf->fcoe_hmc_cntx_num, pf->fcoe_hmc_filt_num);
10918         if (err) {
10919                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
10920                 goto err_init_lan_hmc;
10921         }
10922
10923         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
10924         if (err) {
10925                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
10926                 err = -ENOENT;
10927                 goto err_configure_lan_hmc;
10928         }
10929
10930         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
10931          * Ignore error return codes because if it was already disabled via
10932          * hardware settings this will fail
10933          */
10934         if (pf->flags & I40E_FLAG_STOP_FW_LLDP) {
10935                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
10936                 i40e_aq_stop_lldp(hw, true, NULL);
10937         }
10938
10939         i40e_get_mac_addr(hw, hw->mac.addr);
10940         /* allow a platform config to override the HW addr */
10941         i40e_get_platform_mac_addr(pdev, pf);
10942         if (!is_valid_ether_addr(hw->mac.addr)) {
10943                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
10944                 err = -EIO;
10945                 goto err_mac_addr;
10946         }
10947         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
10948         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
10949         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
10950         if (is_valid_ether_addr(hw->mac.port_addr))
10951                 pf->flags |= I40E_FLAG_PORT_ID_VALID;
10952 #ifdef I40E_FCOE
10953         err = i40e_get_san_mac_addr(hw, hw->mac.san_addr);
10954         if (err)
10955                 dev_info(&pdev->dev,
10956                          "(non-fatal) SAN MAC retrieval failed: %d\n", err);
10957         if (!is_valid_ether_addr(hw->mac.san_addr)) {
10958                 dev_warn(&pdev->dev, "invalid SAN MAC address %pM, falling back to LAN MAC\n",
10959                          hw->mac.san_addr);
10960                 ether_addr_copy(hw->mac.san_addr, hw->mac.addr);
10961         }
10962         dev_info(&pf->pdev->dev, "SAN MAC: %pM\n", hw->mac.san_addr);
10963 #endif /* I40E_FCOE */
10964
10965         pci_set_drvdata(pdev, pf);
10966         pci_save_state(pdev);
10967 #ifdef CONFIG_I40E_DCB
10968         err = i40e_init_pf_dcb(pf);
10969         if (err) {
10970                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
10971                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10972                 /* Continue without DCB enabled */
10973         }
10974 #endif /* CONFIG_I40E_DCB */
10975
10976         /* set up periodic task facility */
10977         setup_timer(&pf->service_timer, i40e_service_timer, (unsigned long)pf);
10978         pf->service_timer_period = HZ;
10979
10980         INIT_WORK(&pf->service_task, i40e_service_task);
10981         clear_bit(__I40E_SERVICE_SCHED, &pf->state);
10982         pf->flags |= I40E_FLAG_NEED_LINK_UPDATE;
10983
10984         /* NVM bit on means WoL disabled for the port */
10985         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
10986         if (BIT (hw->port) & wol_nvm_bits || hw->partition_id != 1)
10987                 pf->wol_en = false;
10988         else
10989                 pf->wol_en = true;
10990         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
10991
10992         /* set up the main switch operations */
10993         i40e_determine_queue_usage(pf);
10994         err = i40e_init_interrupt_scheme(pf);
10995         if (err)
10996                 goto err_switch_setup;
10997
10998         /* The number of VSIs reported by the FW is the minimum guaranteed
10999          * to us; HW supports far more and we share the remaining pool with
11000          * the other PFs. We allocate space for more than the guarantee with
11001          * the understanding that we might not get them all later.
11002          */
11003         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
11004                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
11005         else
11006                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
11007
11008         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
11009         pf->vsi = kcalloc(pf->num_alloc_vsi, sizeof(struct i40e_vsi *),
11010                           GFP_KERNEL);
11011         if (!pf->vsi) {
11012                 err = -ENOMEM;
11013                 goto err_switch_setup;
11014         }
11015
11016 #ifdef CONFIG_PCI_IOV
11017         /* prep for VF support */
11018         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
11019             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
11020             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
11021                 if (pci_num_vf(pdev))
11022                         pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
11023         }
11024 #endif
11025         err = i40e_setup_pf_switch(pf, false);
11026         if (err) {
11027                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
11028                 goto err_vsis;
11029         }
11030
11031         /* Make sure flow control is set according to current settings */
11032         err = i40e_set_fc(hw, &set_fc_aq_fail, true);
11033         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_GET)
11034                 dev_dbg(&pf->pdev->dev,
11035                         "Set fc with err %s aq_err %s on get_phy_cap\n",
11036                         i40e_stat_str(hw, err),
11037                         i40e_aq_str(hw, hw->aq.asq_last_status));
11038         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_SET)
11039                 dev_dbg(&pf->pdev->dev,
11040                         "Set fc with err %s aq_err %s on set_phy_config\n",
11041                         i40e_stat_str(hw, err),
11042                         i40e_aq_str(hw, hw->aq.asq_last_status));
11043         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_UPDATE)
11044                 dev_dbg(&pf->pdev->dev,
11045                         "Set fc with err %s aq_err %s on get_link_info\n",
11046                         i40e_stat_str(hw, err),
11047                         i40e_aq_str(hw, hw->aq.asq_last_status));
11048
11049         /* if FDIR VSI was set up, start it now */
11050         for (i = 0; i < pf->num_alloc_vsi; i++) {
11051                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
11052                         i40e_vsi_open(pf->vsi[i]);
11053                         break;
11054                 }
11055         }
11056
11057         /* The driver only wants link up/down and module qualification
11058          * reports from firmware.  Note the negative logic.
11059          */
11060         err = i40e_aq_set_phy_int_mask(&pf->hw,
11061                                        ~(I40E_AQ_EVENT_LINK_UPDOWN |
11062                                          I40E_AQ_EVENT_MEDIA_NA |
11063                                          I40E_AQ_EVENT_MODULE_QUAL_FAIL), NULL);
11064         if (err)
11065                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
11066                          i40e_stat_str(&pf->hw, err),
11067                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11068
11069         /* Reconfigure hardware for allowing smaller MSS in the case
11070          * of TSO, so that we avoid the MDD being fired and causing
11071          * a reset in the case of small MSS+TSO.
11072          */
11073         val = rd32(hw, I40E_REG_MSS);
11074         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
11075                 val &= ~I40E_REG_MSS_MIN_MASK;
11076                 val |= I40E_64BYTE_MSS;
11077                 wr32(hw, I40E_REG_MSS, val);
11078         }
11079
11080         if (pf->flags & I40E_FLAG_RESTART_AUTONEG) {
11081                 msleep(75);
11082                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
11083                 if (err)
11084                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
11085                                  i40e_stat_str(&pf->hw, err),
11086                                  i40e_aq_str(&pf->hw,
11087                                              pf->hw.aq.asq_last_status));
11088         }
11089         /* The main driver is (mostly) up and happy. We need to set this state
11090          * before setting up the misc vector or we get a race and the vector
11091          * ends up disabled forever.
11092          */
11093         clear_bit(__I40E_DOWN, &pf->state);
11094
11095         /* In case of MSIX we are going to setup the misc vector right here
11096          * to handle admin queue events etc. In case of legacy and MSI
11097          * the misc functionality and queue processing is combined in
11098          * the same vector and that gets setup at open.
11099          */
11100         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
11101                 err = i40e_setup_misc_vector(pf);
11102                 if (err) {
11103                         dev_info(&pdev->dev,
11104                                  "setup of misc vector failed: %d\n", err);
11105                         goto err_vsis;
11106                 }
11107         }
11108
11109 #ifdef CONFIG_PCI_IOV
11110         /* prep for VF support */
11111         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
11112             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
11113             !test_bit(__I40E_BAD_EEPROM, &pf->state)) {
11114                 /* disable link interrupts for VFs */
11115                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
11116                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
11117                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
11118                 i40e_flush(hw);
11119
11120                 if (pci_num_vf(pdev)) {
11121                         dev_info(&pdev->dev,
11122                                  "Active VFs found, allocating resources.\n");
11123                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
11124                         if (err)
11125                                 dev_info(&pdev->dev,
11126                                          "Error %d allocating resources for existing VFs\n",
11127                                          err);
11128                 }
11129         }
11130 #endif /* CONFIG_PCI_IOV */
11131
11132         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
11133                 pf->iwarp_base_vector = i40e_get_lump(pf, pf->irq_pile,
11134                                                       pf->num_iwarp_msix,
11135                                                       I40E_IWARP_IRQ_PILE_ID);
11136                 if (pf->iwarp_base_vector < 0) {
11137                         dev_info(&pdev->dev,
11138                                  "failed to get tracking for %d vectors for IWARP err=%d\n",
11139                                  pf->num_iwarp_msix, pf->iwarp_base_vector);
11140                         pf->flags &= ~I40E_FLAG_IWARP_ENABLED;
11141                 }
11142         }
11143
11144         i40e_dbg_pf_init(pf);
11145
11146         /* tell the firmware that we're starting */
11147         i40e_send_version(pf);
11148
11149         /* since everything's happy, start the service_task timer */
11150         mod_timer(&pf->service_timer,
11151                   round_jiffies(jiffies + pf->service_timer_period));
11152
11153         /* add this PF to client device list and launch a client service task */
11154         err = i40e_lan_add_device(pf);
11155         if (err)
11156                 dev_info(&pdev->dev, "Failed to add PF to client API service list: %d\n",
11157                          err);
11158
11159 #ifdef I40E_FCOE
11160         /* create FCoE interface */
11161         i40e_fcoe_vsi_setup(pf);
11162
11163 #endif
11164 #define PCI_SPEED_SIZE 8
11165 #define PCI_WIDTH_SIZE 8
11166         /* Devices on the IOSF bus do not have this information
11167          * and will report PCI Gen 1 x 1 by default so don't bother
11168          * checking them.
11169          */
11170         if (!(pf->flags & I40E_FLAG_NO_PCI_LINK_CHECK)) {
11171                 char speed[PCI_SPEED_SIZE] = "Unknown";
11172                 char width[PCI_WIDTH_SIZE] = "Unknown";
11173
11174                 /* Get the negotiated link width and speed from PCI config
11175                  * space
11176                  */
11177                 pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA,
11178                                           &link_status);
11179
11180                 i40e_set_pci_config_data(hw, link_status);
11181
11182                 switch (hw->bus.speed) {
11183                 case i40e_bus_speed_8000:
11184                         strncpy(speed, "8.0", PCI_SPEED_SIZE); break;
11185                 case i40e_bus_speed_5000:
11186                         strncpy(speed, "5.0", PCI_SPEED_SIZE); break;
11187                 case i40e_bus_speed_2500:
11188                         strncpy(speed, "2.5", PCI_SPEED_SIZE); break;
11189                 default:
11190                         break;
11191                 }
11192                 switch (hw->bus.width) {
11193                 case i40e_bus_width_pcie_x8:
11194                         strncpy(width, "8", PCI_WIDTH_SIZE); break;
11195                 case i40e_bus_width_pcie_x4:
11196                         strncpy(width, "4", PCI_WIDTH_SIZE); break;
11197                 case i40e_bus_width_pcie_x2:
11198                         strncpy(width, "2", PCI_WIDTH_SIZE); break;
11199                 case i40e_bus_width_pcie_x1:
11200                         strncpy(width, "1", PCI_WIDTH_SIZE); break;
11201                 default:
11202                         break;
11203                 }
11204
11205                 dev_info(&pdev->dev, "PCI-Express: Speed %sGT/s Width x%s\n",
11206                          speed, width);
11207
11208                 if (hw->bus.width < i40e_bus_width_pcie_x8 ||
11209                     hw->bus.speed < i40e_bus_speed_8000) {
11210                         dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
11211                         dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
11212                 }
11213         }
11214
11215         /* get the requested speeds from the fw */
11216         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
11217         if (err)
11218                 dev_dbg(&pf->pdev->dev, "get requested speeds ret =  %s last_status =  %s\n",
11219                         i40e_stat_str(&pf->hw, err),
11220                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11221         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
11222
11223         /* get the supported phy types from the fw */
11224         err = i40e_aq_get_phy_capabilities(hw, false, true, &abilities, NULL);
11225         if (err)
11226                 dev_dbg(&pf->pdev->dev, "get supported phy types ret =  %s last_status =  %s\n",
11227                         i40e_stat_str(&pf->hw, err),
11228                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
11229         pf->hw.phy.phy_types = le32_to_cpu(abilities.phy_type);
11230
11231         /* Add a filter to drop all Flow control frames from any VSI from being
11232          * transmitted. By doing so we stop a malicious VF from sending out
11233          * PAUSE or PFC frames and potentially controlling traffic for other
11234          * PF/VF VSIs.
11235          * The FW can still send Flow control frames if enabled.
11236          */
11237         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
11238                                                        pf->main_vsi_seid);
11239
11240         if ((pf->hw.device_id == I40E_DEV_ID_10G_BASE_T) ||
11241             (pf->hw.device_id == I40E_DEV_ID_10G_BASE_T4))
11242                 pf->flags |= I40E_FLAG_HAVE_10GBASET_PHY;
11243
11244         /* print a string summarizing features */
11245         i40e_print_features(pf);
11246
11247         return 0;
11248
11249         /* Unwind what we've done if something failed in the setup */
11250 err_vsis:
11251         set_bit(__I40E_DOWN, &pf->state);
11252         i40e_clear_interrupt_scheme(pf);
11253         kfree(pf->vsi);
11254 err_switch_setup:
11255         i40e_reset_interrupt_capability(pf);
11256         del_timer_sync(&pf->service_timer);
11257 err_mac_addr:
11258 err_configure_lan_hmc:
11259         (void)i40e_shutdown_lan_hmc(hw);
11260 err_init_lan_hmc:
11261         kfree(pf->qp_pile);
11262 err_sw_init:
11263 err_adminq_setup:
11264 err_pf_reset:
11265         iounmap(hw->hw_addr);
11266 err_ioremap:
11267         kfree(pf);
11268 err_pf_alloc:
11269         pci_disable_pcie_error_reporting(pdev);
11270         pci_release_selected_regions(pdev,
11271                                      pci_select_bars(pdev, IORESOURCE_MEM));
11272 err_pci_reg:
11273 err_dma:
11274         pci_disable_device(pdev);
11275         return err;
11276 }
11277
11278 /**
11279  * i40e_remove - Device removal routine
11280  * @pdev: PCI device information struct
11281  *
11282  * i40e_remove is called by the PCI subsystem to alert the driver
11283  * that is should release a PCI device.  This could be caused by a
11284  * Hot-Plug event, or because the driver is going to be removed from
11285  * memory.
11286  **/
11287 static void i40e_remove(struct pci_dev *pdev)
11288 {
11289         struct i40e_pf *pf = pci_get_drvdata(pdev);
11290         struct i40e_hw *hw = &pf->hw;
11291         i40e_status ret_code;
11292         int i;
11293
11294         i40e_dbg_pf_exit(pf);
11295
11296         i40e_ptp_stop(pf);
11297
11298         /* Disable RSS in hw */
11299         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), 0);
11300         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), 0);
11301
11302         /* no more scheduling of any task */
11303         set_bit(__I40E_SUSPENDED, &pf->state);
11304         set_bit(__I40E_DOWN, &pf->state);
11305         if (pf->service_timer.data)
11306                 del_timer_sync(&pf->service_timer);
11307         if (pf->service_task.func)
11308                 cancel_work_sync(&pf->service_task);
11309
11310         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
11311                 i40e_free_vfs(pf);
11312                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
11313         }
11314
11315         i40e_fdir_teardown(pf);
11316
11317         /* If there is a switch structure or any orphans, remove them.
11318          * This will leave only the PF's VSI remaining.
11319          */
11320         for (i = 0; i < I40E_MAX_VEB; i++) {
11321                 if (!pf->veb[i])
11322                         continue;
11323
11324                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
11325                     pf->veb[i]->uplink_seid == 0)
11326                         i40e_switch_branch_release(pf->veb[i]);
11327         }
11328
11329         /* Now we can shutdown the PF's VSI, just before we kill
11330          * adminq and hmc.
11331          */
11332         if (pf->vsi[pf->lan_vsi])
11333                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
11334
11335         /* remove attached clients */
11336         ret_code = i40e_lan_del_device(pf);
11337         if (ret_code) {
11338                 dev_warn(&pdev->dev, "Failed to delete client device: %d\n",
11339                          ret_code);
11340         }
11341
11342         /* shutdown and destroy the HMC */
11343         if (hw->hmc.hmc_obj) {
11344                 ret_code = i40e_shutdown_lan_hmc(hw);
11345                 if (ret_code)
11346                         dev_warn(&pdev->dev,
11347                                  "Failed to destroy the HMC resources: %d\n",
11348                                  ret_code);
11349         }
11350
11351         /* shutdown the adminq */
11352         ret_code = i40e_shutdown_adminq(hw);
11353         if (ret_code)
11354                 dev_warn(&pdev->dev,
11355                          "Failed to destroy the Admin Queue resources: %d\n",
11356                          ret_code);
11357
11358         /* destroy the locks only once, here */
11359         mutex_destroy(&hw->aq.arq_mutex);
11360         mutex_destroy(&hw->aq.asq_mutex);
11361
11362         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
11363         i40e_clear_interrupt_scheme(pf);
11364         for (i = 0; i < pf->num_alloc_vsi; i++) {
11365                 if (pf->vsi[i]) {
11366                         i40e_vsi_clear_rings(pf->vsi[i]);
11367                         i40e_vsi_clear(pf->vsi[i]);
11368                         pf->vsi[i] = NULL;
11369                 }
11370         }
11371
11372         for (i = 0; i < I40E_MAX_VEB; i++) {
11373                 kfree(pf->veb[i]);
11374                 pf->veb[i] = NULL;
11375         }
11376
11377         kfree(pf->qp_pile);
11378         kfree(pf->vsi);
11379
11380         iounmap(hw->hw_addr);
11381         kfree(pf);
11382         pci_release_selected_regions(pdev,
11383                                      pci_select_bars(pdev, IORESOURCE_MEM));
11384
11385         pci_disable_pcie_error_reporting(pdev);
11386         pci_disable_device(pdev);
11387 }
11388
11389 /**
11390  * i40e_pci_error_detected - warning that something funky happened in PCI land
11391  * @pdev: PCI device information struct
11392  *
11393  * Called to warn that something happened and the error handling steps
11394  * are in progress.  Allows the driver to quiesce things, be ready for
11395  * remediation.
11396  **/
11397 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
11398                                                 enum pci_channel_state error)
11399 {
11400         struct i40e_pf *pf = pci_get_drvdata(pdev);
11401
11402         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
11403
11404         /* shutdown all operations */
11405         if (!test_bit(__I40E_SUSPENDED, &pf->state)) {
11406                 rtnl_lock();
11407                 i40e_prep_for_reset(pf);
11408                 rtnl_unlock();
11409         }
11410
11411         /* Request a slot reset */
11412         return PCI_ERS_RESULT_NEED_RESET;
11413 }
11414
11415 /**
11416  * i40e_pci_error_slot_reset - a PCI slot reset just happened
11417  * @pdev: PCI device information struct
11418  *
11419  * Called to find if the driver can work with the device now that
11420  * the pci slot has been reset.  If a basic connection seems good
11421  * (registers are readable and have sane content) then return a
11422  * happy little PCI_ERS_RESULT_xxx.
11423  **/
11424 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
11425 {
11426         struct i40e_pf *pf = pci_get_drvdata(pdev);
11427         pci_ers_result_t result;
11428         int err;
11429         u32 reg;
11430
11431         dev_dbg(&pdev->dev, "%s\n", __func__);
11432         if (pci_enable_device_mem(pdev)) {
11433                 dev_info(&pdev->dev,
11434                          "Cannot re-enable PCI device after reset.\n");
11435                 result = PCI_ERS_RESULT_DISCONNECT;
11436         } else {
11437                 pci_set_master(pdev);
11438                 pci_restore_state(pdev);
11439                 pci_save_state(pdev);
11440                 pci_wake_from_d3(pdev, false);
11441
11442                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
11443                 if (reg == 0)
11444                         result = PCI_ERS_RESULT_RECOVERED;
11445                 else
11446                         result = PCI_ERS_RESULT_DISCONNECT;
11447         }
11448
11449         err = pci_cleanup_aer_uncorrect_error_status(pdev);
11450         if (err) {
11451                 dev_info(&pdev->dev,
11452                          "pci_cleanup_aer_uncorrect_error_status failed 0x%0x\n",
11453                          err);
11454                 /* non-fatal, continue */
11455         }
11456
11457         return result;
11458 }
11459
11460 /**
11461  * i40e_pci_error_resume - restart operations after PCI error recovery
11462  * @pdev: PCI device information struct
11463  *
11464  * Called to allow the driver to bring things back up after PCI error
11465  * and/or reset recovery has finished.
11466  **/
11467 static void i40e_pci_error_resume(struct pci_dev *pdev)
11468 {
11469         struct i40e_pf *pf = pci_get_drvdata(pdev);
11470
11471         dev_dbg(&pdev->dev, "%s\n", __func__);
11472         if (test_bit(__I40E_SUSPENDED, &pf->state))
11473                 return;
11474
11475         rtnl_lock();
11476         i40e_handle_reset_warning(pf);
11477         rtnl_unlock();
11478 }
11479
11480 /**
11481  * i40e_shutdown - PCI callback for shutting down
11482  * @pdev: PCI device information struct
11483  **/
11484 static void i40e_shutdown(struct pci_dev *pdev)
11485 {
11486         struct i40e_pf *pf = pci_get_drvdata(pdev);
11487         struct i40e_hw *hw = &pf->hw;
11488
11489         set_bit(__I40E_SUSPENDED, &pf->state);
11490         set_bit(__I40E_DOWN, &pf->state);
11491         rtnl_lock();
11492         i40e_prep_for_reset(pf);
11493         rtnl_unlock();
11494
11495         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11496         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11497
11498         del_timer_sync(&pf->service_timer);
11499         cancel_work_sync(&pf->service_task);
11500         i40e_fdir_teardown(pf);
11501
11502         rtnl_lock();
11503         i40e_prep_for_reset(pf);
11504         rtnl_unlock();
11505
11506         wr32(hw, I40E_PFPM_APM,
11507              (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11508         wr32(hw, I40E_PFPM_WUFC,
11509              (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11510
11511         i40e_clear_interrupt_scheme(pf);
11512
11513         if (system_state == SYSTEM_POWER_OFF) {
11514                 pci_wake_from_d3(pdev, pf->wol_en);
11515                 pci_set_power_state(pdev, PCI_D3hot);
11516         }
11517 }
11518
11519 #ifdef CONFIG_PM
11520 /**
11521  * i40e_suspend - PCI callback for moving to D3
11522  * @pdev: PCI device information struct
11523  **/
11524 static int i40e_suspend(struct pci_dev *pdev, pm_message_t state)
11525 {
11526         struct i40e_pf *pf = pci_get_drvdata(pdev);
11527         struct i40e_hw *hw = &pf->hw;
11528
11529         set_bit(__I40E_SUSPENDED, &pf->state);
11530         set_bit(__I40E_DOWN, &pf->state);
11531
11532         rtnl_lock();
11533         i40e_prep_for_reset(pf);
11534         rtnl_unlock();
11535
11536         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
11537         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
11538
11539         pci_wake_from_d3(pdev, pf->wol_en);
11540         pci_set_power_state(pdev, PCI_D3hot);
11541
11542         return 0;
11543 }
11544
11545 /**
11546  * i40e_resume - PCI callback for waking up from D3
11547  * @pdev: PCI device information struct
11548  **/
11549 static int i40e_resume(struct pci_dev *pdev)
11550 {
11551         struct i40e_pf *pf = pci_get_drvdata(pdev);
11552         u32 err;
11553
11554         pci_set_power_state(pdev, PCI_D0);
11555         pci_restore_state(pdev);
11556         /* pci_restore_state() clears dev->state_saves, so
11557          * call pci_save_state() again to restore it.
11558          */
11559         pci_save_state(pdev);
11560
11561         err = pci_enable_device_mem(pdev);
11562         if (err) {
11563                 dev_err(&pdev->dev, "Cannot enable PCI device from suspend\n");
11564                 return err;
11565         }
11566         pci_set_master(pdev);
11567
11568         /* no wakeup events while running */
11569         pci_wake_from_d3(pdev, false);
11570
11571         /* handling the reset will rebuild the device state */
11572         if (test_and_clear_bit(__I40E_SUSPENDED, &pf->state)) {
11573                 clear_bit(__I40E_DOWN, &pf->state);
11574                 rtnl_lock();
11575                 i40e_reset_and_rebuild(pf, false);
11576                 rtnl_unlock();
11577         }
11578
11579         return 0;
11580 }
11581
11582 #endif
11583 static const struct pci_error_handlers i40e_err_handler = {
11584         .error_detected = i40e_pci_error_detected,
11585         .slot_reset = i40e_pci_error_slot_reset,
11586         .resume = i40e_pci_error_resume,
11587 };
11588
11589 static struct pci_driver i40e_driver = {
11590         .name     = i40e_driver_name,
11591         .id_table = i40e_pci_tbl,
11592         .probe    = i40e_probe,
11593         .remove   = i40e_remove,
11594 #ifdef CONFIG_PM
11595         .suspend  = i40e_suspend,
11596         .resume   = i40e_resume,
11597 #endif
11598         .shutdown = i40e_shutdown,
11599         .err_handler = &i40e_err_handler,
11600         .sriov_configure = i40e_pci_sriov_configure,
11601 };
11602
11603 /**
11604  * i40e_init_module - Driver registration routine
11605  *
11606  * i40e_init_module is the first routine called when the driver is
11607  * loaded. All it does is register with the PCI subsystem.
11608  **/
11609 static int __init i40e_init_module(void)
11610 {
11611         pr_info("%s: %s - version %s\n", i40e_driver_name,
11612                 i40e_driver_string, i40e_driver_version_str);
11613         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
11614
11615         /* we will see if single thread per module is enough for now,
11616          * it can't be any worse than using the system workqueue which
11617          * was already single threaded
11618          */
11619         i40e_wq = create_singlethread_workqueue(i40e_driver_name);
11620         if (!i40e_wq) {
11621                 pr_err("%s: Failed to create workqueue\n", i40e_driver_name);
11622                 return -ENOMEM;
11623         }
11624
11625         i40e_dbg_init();
11626         return pci_register_driver(&i40e_driver);
11627 }
11628 module_init(i40e_init_module);
11629
11630 /**
11631  * i40e_exit_module - Driver exit cleanup routine
11632  *
11633  * i40e_exit_module is called just before the driver is removed
11634  * from memory.
11635  **/
11636 static void __exit i40e_exit_module(void)
11637 {
11638         pci_unregister_driver(&i40e_driver);
11639         destroy_workqueue(i40e_wq);
11640         i40e_dbg_exit();
11641 }
11642 module_exit(i40e_exit_module);