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

   1 // SPDX-License-Identifier: GPL-2.0
   2 /* Copyright(c) 2013 - 2018 Intel Corporation. */
   3
   4 #include <linux/etherdevice.h>
   5 #include <linux/of_net.h>
   6 #include <linux/pci.h>
   7 #include <linux/bpf.h>
   8 #include <generated/utsrelease.h>
   9
  10 /* Local includes */
  11 #include "i40e.h"
  12 #include "i40e_diag.h"
  13 #include "i40e_xsk.h"
  14 #include <net/udp_tunnel.h>
  15 #include <net/xdp_sock_drv.h>
  16 /* All i40e tracepoints are defined by the include below, which
  17  * must be included exactly once across the whole kernel with
  18  * CREATE_TRACE_POINTS defined
  19  */
  20 #define CREATE_TRACE_POINTS
  21 #include "i40e_trace.h"
  22
  23 const char i40e_driver_name[] = "i40e";
  24 static const char i40e_driver_string[] =
  25                         "Intel(R) Ethernet Connection XL710 Network Driver";
  26
  27 static const char i40e_copyright[] = "Copyright (c) 2013 - 2019 Intel Corporation.";
  28
  29 /* a bit of forward declarations */
  30 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi);
  31 static void i40e_handle_reset_warning(struct i40e_pf *pf, bool lock_acquired);
  32 static int i40e_add_vsi(struct i40e_vsi *vsi);
  33 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi);
  34 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit);
  35 static int i40e_setup_misc_vector(struct i40e_pf *pf);
  36 static void i40e_determine_queue_usage(struct i40e_pf *pf);
  37 static int i40e_setup_pf_filter_control(struct i40e_pf *pf);
  38 static void i40e_prep_for_reset(struct i40e_pf *pf, bool lock_acquired);
  39 static int i40e_reset(struct i40e_pf *pf);
  40 static void i40e_rebuild(struct i40e_pf *pf, bool reinit, bool lock_acquired);
  41 static int i40e_setup_misc_vector_for_recovery_mode(struct i40e_pf *pf);
  42 static int i40e_restore_interrupt_scheme(struct i40e_pf *pf);
  43 static bool i40e_check_recovery_mode(struct i40e_pf *pf);
  44 static int i40e_init_recovery_mode(struct i40e_pf *pf, struct i40e_hw *hw);
  45 static void i40e_fdir_sb_setup(struct i40e_pf *pf);
  46 static int i40e_veb_get_bw_info(struct i40e_veb *veb);
  47 static int i40e_get_capabilities(struct i40e_pf *pf,
  48                                  enum i40e_admin_queue_opc list_type);
  49 static bool i40e_is_total_port_shutdown_enabled(struct i40e_pf *pf);
  50
  51 /* i40e_pci_tbl - PCI Device ID Table
  52  *
  53  * Last entry must be all 0s
  54  *
  55  * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
  56  *   Class, Class Mask, private data (not used) }
  57  */
  58 static const struct pci_device_id i40e_pci_tbl[] = {
  59         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_XL710), 0},
  60         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QEMU), 0},
  61         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_B), 0},
  62         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_C), 0},
  63         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_A), 0},
  64         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_B), 0},
  65         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_C), 0},
  66         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T), 0},
  67         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T4), 0},
  68         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T_BC), 0},
  69         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_SFP), 0},
  70         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_B), 0},
  71         {PCI_VDEVICE(INTEL, I40E_DEV_ID_KX_X722), 0},
  72         {PCI_VDEVICE(INTEL, I40E_DEV_ID_QSFP_X722), 0},
  73         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_X722), 0},
  74         {PCI_VDEVICE(INTEL, I40E_DEV_ID_1G_BASE_T_X722), 0},
  75         {PCI_VDEVICE(INTEL, I40E_DEV_ID_10G_BASE_T_X722), 0},
  76         {PCI_VDEVICE(INTEL, I40E_DEV_ID_SFP_I_X722), 0},
  77         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2), 0},
  78         {PCI_VDEVICE(INTEL, I40E_DEV_ID_20G_KR2_A), 0},
  79         {PCI_VDEVICE(INTEL, I40E_DEV_ID_X710_N3000), 0},
  80         {PCI_VDEVICE(INTEL, I40E_DEV_ID_XXV710_N3000), 0},
  81         {PCI_VDEVICE(INTEL, I40E_DEV_ID_25G_B), 0},
  82         {PCI_VDEVICE(INTEL, I40E_DEV_ID_25G_SFP28), 0},
  83         /* required last entry */
  84         {0, }
  85 };
  86 MODULE_DEVICE_TABLE(pci, i40e_pci_tbl);
  87
  88 #define I40E_MAX_VF_COUNT 128
  89 static int debug = -1;
  90 module_param(debug, uint, 0);
  91 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all), Debug mask (0x8XXXXXXX)");
  92
  93 MODULE_AUTHOR("Intel Corporation, <e1000-devel@lists.sourceforge.net>");
  94 MODULE_DESCRIPTION("Intel(R) Ethernet Connection XL710 Network Driver");
  95 MODULE_LICENSE("GPL v2");
  96
  97 static struct workqueue_struct *i40e_wq;
  98
  99 /**
 100  * i40e_allocate_dma_mem_d - OS specific memory alloc for shared code
 101  * @hw:   pointer to the HW structure
 102  * @mem:  ptr to mem struct to fill out
 103  * @size: size of memory requested
 104  * @alignment: what to align the allocation to
 105  **/
 106 int i40e_allocate_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem,
 107                             u64 size, u32 alignment)
 108 {
 109         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 110
 111         mem->size = ALIGN(size, alignment);
 112         mem->va = dma_alloc_coherent(&pf->pdev->dev, mem->size, &mem->pa,
 113                                      GFP_KERNEL);
 114         if (!mem->va)
 115                 return -ENOMEM;
 116
 117         return 0;
 118 }
 119
 120 /**
 121  * i40e_free_dma_mem_d - OS specific memory free for shared code
 122  * @hw:   pointer to the HW structure
 123  * @mem:  ptr to mem struct to free
 124  **/
 125 int i40e_free_dma_mem_d(struct i40e_hw *hw, struct i40e_dma_mem *mem)
 126 {
 127         struct i40e_pf *pf = (struct i40e_pf *)hw->back;
 128
 129         dma_free_coherent(&pf->pdev->dev, mem->size, mem->va, mem->pa);
 130         mem->va = NULL;
 131         mem->pa = 0;
 132         mem->size = 0;
 133
 134         return 0;
 135 }
 136
 137 /**
 138  * i40e_allocate_virt_mem_d - OS specific memory alloc for shared code
 139  * @hw:   pointer to the HW structure
 140  * @mem:  ptr to mem struct to fill out
 141  * @size: size of memory requested
 142  **/
 143 int i40e_allocate_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem,
 144                              u32 size)
 145 {
 146         mem->size = size;
 147         mem->va = kzalloc(size, GFP_KERNEL);
 148
 149         if (!mem->va)
 150                 return -ENOMEM;
 151
 152         return 0;
 153 }
 154
 155 /**
 156  * i40e_free_virt_mem_d - OS specific memory free for shared code
 157  * @hw:   pointer to the HW structure
 158  * @mem:  ptr to mem struct to free
 159  **/
 160 int i40e_free_virt_mem_d(struct i40e_hw *hw, struct i40e_virt_mem *mem)
 161 {
 162         /* it's ok to kfree a NULL pointer */
 163         kfree(mem->va);
 164         mem->va = NULL;
 165         mem->size = 0;
 166
 167         return 0;
 168 }
 169
 170 /**
 171  * i40e_get_lump - find a lump of free generic resource
 172  * @pf: board private structure
 173  * @pile: the pile of resource to search
 174  * @needed: the number of items needed
 175  * @id: an owner id to stick on the items assigned
 176  *
 177  * Returns the base item index of the lump, or negative for error
 178  *
 179  * The search_hint trick and lack of advanced fit-finding only work
 180  * because we're highly likely to have all the same size lump requests.
 181  * Linear search time and any fragmentation should be minimal.
 182  **/
 183 static int i40e_get_lump(struct i40e_pf *pf, struct i40e_lump_tracking *pile,
 184                          u16 needed, u16 id)
 185 {
 186         int ret = -ENOMEM;
 187         int i, j;
 188
 189         if (!pile || needed == 0 || id >= I40E_PILE_VALID_BIT) {
 190                 dev_info(&pf->pdev->dev,
 191                          "param err: pile=%s needed=%d id=0x%04x\n",
 192                          pile ? "<valid>" : "<null>", needed, id);
 193                 return -EINVAL;
 194         }
 195
 196         /* start the linear search with an imperfect hint */
 197         i = pile->search_hint;
 198         while (i < pile->num_entries) {
 199                 /* skip already allocated entries */
 200                 if (pile->list[i] & I40E_PILE_VALID_BIT) {
 201                         i++;
 202                         continue;
 203                 }
 204
 205                 /* do we have enough in this lump? */
 206                 for (j = 0; (j < needed) && ((i+j) < pile->num_entries); j++) {
 207                         if (pile->list[i+j] & I40E_PILE_VALID_BIT)
 208                                 break;
 209                 }
 210
 211                 if (j == needed) {
 212                         /* there was enough, so assign it to the requestor */
 213                         for (j = 0; j < needed; j++)
 214                                 pile->list[i+j] = id | I40E_PILE_VALID_BIT;
 215                         ret = i;
 216                         pile->search_hint = i + j;
 217                         break;
 218                 }
 219
 220                 /* not enough, so skip over it and continue looking */
 221                 i += j;
 222         }
 223
 224         return ret;
 225 }
 226
 227 /**
 228  * i40e_put_lump - return a lump of generic resource
 229  * @pile: the pile of resource to search
 230  * @index: the base item index
 231  * @id: the owner id of the items assigned
 232  *
 233  * Returns the count of items in the lump
 234  **/
 235 static int i40e_put_lump(struct i40e_lump_tracking *pile, u16 index, u16 id)
 236 {
 237         int valid_id = (id | I40E_PILE_VALID_BIT);
 238         int count = 0;
 239         int i;
 240
 241         if (!pile || index >= pile->num_entries)
 242                 return -EINVAL;
 243
 244         for (i = index;
 245              i < pile->num_entries && pile->list[i] == valid_id;
 246              i++) {
 247                 pile->list[i] = 0;
 248                 count++;
 249         }
 250
 251         if (count && index < pile->search_hint)
 252                 pile->search_hint = index;
 253
 254         return count;
 255 }
 256
 257 /**
 258  * i40e_find_vsi_from_id - searches for the vsi with the given id
 259  * @pf: the pf structure to search for the vsi
 260  * @id: id of the vsi it is searching for
 261  **/
 262 struct i40e_vsi *i40e_find_vsi_from_id(struct i40e_pf *pf, u16 id)
 263 {
 264         int i;
 265
 266         for (i = 0; i < pf->num_alloc_vsi; i++)
 267                 if (pf->vsi[i] && (pf->vsi[i]->id == id))
 268                         return pf->vsi[i];
 269
 270         return NULL;
 271 }
 272
 273 /**
 274  * i40e_service_event_schedule - Schedule the service task to wake up
 275  * @pf: board private structure
 276  *
 277  * If not already scheduled, this puts the task into the work queue
 278  **/
 279 void i40e_service_event_schedule(struct i40e_pf *pf)
 280 {
 281         if ((!test_bit(__I40E_DOWN, pf->state) &&
 282              !test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state)) ||
 283               test_bit(__I40E_RECOVERY_MODE, pf->state))
 284                 queue_work(i40e_wq, &pf->service_task);
 285 }
 286
 287 /**
 288  * i40e_tx_timeout - Respond to a Tx Hang
 289  * @netdev: network interface device structure
 290  *
 291  * If any port has noticed a Tx timeout, it is likely that the whole
 292  * device is munged, not just the one netdev port, so go for the full
 293  * reset.
 294  **/
 295 static void i40e_tx_timeout(struct net_device *netdev, unsigned int txqueue)
 296 {
 297         struct i40e_netdev_priv *np = netdev_priv(netdev);
 298         struct i40e_vsi *vsi = np->vsi;
 299         struct i40e_pf *pf = vsi->back;
 300         struct i40e_ring *tx_ring = NULL;
 301         unsigned int i;
 302         u32 head, val;
 303
 304         pf->tx_timeout_count++;
 305
 306         /* with txqueue index, find the tx_ring struct */
 307         for (i = 0; i < vsi->num_queue_pairs; i++) {
 308                 if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) {
 309                         if (txqueue ==
 310                             vsi->tx_rings[i]->queue_index) {
 311                                 tx_ring = vsi->tx_rings[i];
 312                                 break;
 313                         }
 314                 }
 315         }
 316
 317         if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ*20)))
 318                 pf->tx_timeout_recovery_level = 1;  /* reset after some time */
 319         else if (time_before(jiffies,
 320                       (pf->tx_timeout_last_recovery + netdev->watchdog_timeo)))
 321                 return;   /* don't do any new action before the next timeout */
 322
 323         /* don't kick off another recovery if one is already pending */
 324         if (test_and_set_bit(__I40E_TIMEOUT_RECOVERY_PENDING, pf->state))
 325                 return;
 326
 327         if (tx_ring) {
 328                 head = i40e_get_head(tx_ring);
 329                 /* Read interrupt register */
 330                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
 331                         val = rd32(&pf->hw,
 332                              I40E_PFINT_DYN_CTLN(tx_ring->q_vector->v_idx +
 333                                                 tx_ring->vsi->base_vector - 1));
 334                 else
 335                         val = rd32(&pf->hw, I40E_PFINT_DYN_CTL0);
 336
 337                 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",
 338                             vsi->seid, txqueue, tx_ring->next_to_clean,
 339                             head, tx_ring->next_to_use,
 340                             readl(tx_ring->tail), val);
 341         }
 342
 343         pf->tx_timeout_last_recovery = jiffies;
 344         netdev_info(netdev, "tx_timeout recovery level %d, txqueue %d\n",
 345                     pf->tx_timeout_recovery_level, txqueue);
 346
 347         switch (pf->tx_timeout_recovery_level) {
 348         case 1:
 349                 set_bit(__I40E_PF_RESET_REQUESTED, pf->state);
 350                 break;
 351         case 2:
 352                 set_bit(__I40E_CORE_RESET_REQUESTED, pf->state);
 353                 break;
 354         case 3:
 355                 set_bit(__I40E_GLOBAL_RESET_REQUESTED, pf->state);
 356                 break;
 357         default:
 358                 netdev_err(netdev, "tx_timeout recovery unsuccessful\n");
 359                 break;
 360         }
 361
 362         i40e_service_event_schedule(pf);
 363         pf->tx_timeout_recovery_level++;
 364 }
 365
 366 /**
 367  * i40e_get_vsi_stats_struct - Get System Network Statistics
 368  * @vsi: the VSI we care about
 369  *
 370  * Returns the address of the device statistics structure.
 371  * The statistics are actually updated from the service task.
 372  **/
 373 struct rtnl_link_stats64 *i40e_get_vsi_stats_struct(struct i40e_vsi *vsi)
 374 {
 375         return &vsi->net_stats;
 376 }
 377
 378 /**
 379  * i40e_get_netdev_stats_struct_tx - populate stats from a Tx ring
 380  * @ring: Tx ring to get statistics from
 381  * @stats: statistics entry to be updated
 382  **/
 383 static void i40e_get_netdev_stats_struct_tx(struct i40e_ring *ring,
 384                                             struct rtnl_link_stats64 *stats)
 385 {
 386         u64 bytes, packets;
 387         unsigned int start;
 388
 389         do {
 390                 start = u64_stats_fetch_begin_irq(&ring->syncp);
 391                 packets = ring->stats.packets;
 392                 bytes   = ring->stats.bytes;
 393         } while (u64_stats_fetch_retry_irq(&ring->syncp, start));
 394
 395         stats->tx_packets += packets;
 396         stats->tx_bytes   += bytes;
 397 }
 398
 399 /**
 400  * i40e_get_netdev_stats_struct - Get statistics for netdev interface
 401  * @netdev: network interface device structure
 402  * @stats: data structure to store statistics
 403  *
 404  * Returns the address of the device statistics structure.
 405  * The statistics are actually updated from the service task.
 406  **/
 407 static void i40e_get_netdev_stats_struct(struct net_device *netdev,
 408                                   struct rtnl_link_stats64 *stats)
 409 {
 410         struct i40e_netdev_priv *np = netdev_priv(netdev);
 411         struct i40e_vsi *vsi = np->vsi;
 412         struct rtnl_link_stats64 *vsi_stats = i40e_get_vsi_stats_struct(vsi);
 413         struct i40e_ring *ring;
 414         int i;
 415
 416         if (test_bit(__I40E_VSI_DOWN, vsi->state))
 417                 return;
 418
 419         if (!vsi->tx_rings)
 420                 return;
 421
 422         rcu_read_lock();
 423         for (i = 0; i < vsi->num_queue_pairs; i++) {
 424                 u64 bytes, packets;
 425                 unsigned int start;
 426
 427                 ring = READ_ONCE(vsi->tx_rings[i]);
 428                 if (!ring)
 429                         continue;
 430                 i40e_get_netdev_stats_struct_tx(ring, stats);
 431
 432                 if (i40e_enabled_xdp_vsi(vsi)) {
 433                         ring = READ_ONCE(vsi->xdp_rings[i]);
 434                         if (!ring)
 435                                 continue;
 436                         i40e_get_netdev_stats_struct_tx(ring, stats);
 437                 }
 438
 439                 ring = READ_ONCE(vsi->rx_rings[i]);
 440                 if (!ring)
 441                         continue;
 442                 do {
 443                         start   = u64_stats_fetch_begin_irq(&ring->syncp);
 444                         packets = ring->stats.packets;
 445                         bytes   = ring->stats.bytes;
 446                 } while (u64_stats_fetch_retry_irq(&ring->syncp, start));
 447
 448                 stats->rx_packets += packets;
 449                 stats->rx_bytes   += bytes;
 450
 451         }
 452         rcu_read_unlock();
 453
 454         /* following stats updated by i40e_watchdog_subtask() */
 455         stats->multicast        = vsi_stats->multicast;
 456         stats->tx_errors        = vsi_stats->tx_errors;
 457         stats->tx_dropped       = vsi_stats->tx_dropped;
 458         stats->rx_errors        = vsi_stats->rx_errors;
 459         stats->rx_dropped       = vsi_stats->rx_dropped;
 460         stats->rx_crc_errors    = vsi_stats->rx_crc_errors;
 461         stats->rx_length_errors = vsi_stats->rx_length_errors;
 462 }
 463
 464 /**
 465  * i40e_vsi_reset_stats - Resets all stats of the given vsi
 466  * @vsi: the VSI to have its stats reset
 467  **/
 468 void i40e_vsi_reset_stats(struct i40e_vsi *vsi)
 469 {
 470         struct rtnl_link_stats64 *ns;
 471         int i;
 472
 473         if (!vsi)
 474                 return;
 475
 476         ns = i40e_get_vsi_stats_struct(vsi);
 477         memset(ns, 0, sizeof(*ns));
 478         memset(&vsi->net_stats_offsets, 0, sizeof(vsi->net_stats_offsets));
 479         memset(&vsi->eth_stats, 0, sizeof(vsi->eth_stats));
 480         memset(&vsi->eth_stats_offsets, 0, sizeof(vsi->eth_stats_offsets));
 481         if (vsi->rx_rings && vsi->rx_rings[0]) {
 482                 for (i = 0; i < vsi->num_queue_pairs; i++) {
 483                         memset(&vsi->rx_rings[i]->stats, 0,
 484                                sizeof(vsi->rx_rings[i]->stats));
 485                         memset(&vsi->rx_rings[i]->rx_stats, 0,
 486                                sizeof(vsi->rx_rings[i]->rx_stats));
 487                         memset(&vsi->tx_rings[i]->stats, 0,
 488                                sizeof(vsi->tx_rings[i]->stats));
 489                         memset(&vsi->tx_rings[i]->tx_stats, 0,
 490                                sizeof(vsi->tx_rings[i]->tx_stats));
 491                 }
 492         }
 493         vsi->stat_offsets_loaded = false;
 494 }
 495
 496 /**
 497  * i40e_pf_reset_stats - Reset all of the stats for the given PF
 498  * @pf: the PF to be reset
 499  **/
 500 void i40e_pf_reset_stats(struct i40e_pf *pf)
 501 {
 502         int i;
 503
 504         memset(&pf->stats, 0, sizeof(pf->stats));
 505         memset(&pf->stats_offsets, 0, sizeof(pf->stats_offsets));
 506         pf->stat_offsets_loaded = false;
 507
 508         for (i = 0; i < I40E_MAX_VEB; i++) {
 509                 if (pf->veb[i]) {
 510                         memset(&pf->veb[i]->stats, 0,
 511                                sizeof(pf->veb[i]->stats));
 512                         memset(&pf->veb[i]->stats_offsets, 0,
 513                                sizeof(pf->veb[i]->stats_offsets));
 514                         memset(&pf->veb[i]->tc_stats, 0,
 515                                sizeof(pf->veb[i]->tc_stats));
 516                         memset(&pf->veb[i]->tc_stats_offsets, 0,
 517                                sizeof(pf->veb[i]->tc_stats_offsets));
 518                         pf->veb[i]->stat_offsets_loaded = false;
 519                 }
 520         }
 521         pf->hw_csum_rx_error = 0;
 522 }
 523
 524 /**
 525  * i40e_stat_update48 - read and update a 48 bit stat from the chip
 526  * @hw: ptr to the hardware info
 527  * @hireg: the high 32 bit reg to read
 528  * @loreg: the low 32 bit reg to read
 529  * @offset_loaded: has the initial offset been loaded yet
 530  * @offset: ptr to current offset value
 531  * @stat: ptr to the stat
 532  *
 533  * Since the device stats are not reset at PFReset, they likely will not
 534  * be zeroed when the driver starts.  We'll save the first values read
 535  * and use them as offsets to be subtracted from the raw values in order
 536  * to report stats that count from zero.  In the process, we also manage
 537  * the potential roll-over.
 538  **/
 539 static void i40e_stat_update48(struct i40e_hw *hw, u32 hireg, u32 loreg,
 540                                bool offset_loaded, u64 *offset, u64 *stat)
 541 {
 542         u64 new_data;
 543
 544         if (hw->device_id == I40E_DEV_ID_QEMU) {
 545                 new_data = rd32(hw, loreg);
 546                 new_data |= ((u64)(rd32(hw, hireg) & 0xFFFF)) << 32;
 547         } else {
 548                 new_data = rd64(hw, loreg);
 549         }
 550         if (!offset_loaded)
 551                 *offset = new_data;
 552         if (likely(new_data >= *offset))
 553                 *stat = new_data - *offset;
 554         else
 555                 *stat = (new_data + BIT_ULL(48)) - *offset;
 556         *stat &= 0xFFFFFFFFFFFFULL;
 557 }
 558
 559 /**
 560  * i40e_stat_update32 - read and update a 32 bit stat from the chip
 561  * @hw: ptr to the hardware info
 562  * @reg: the hw reg to read
 563  * @offset_loaded: has the initial offset been loaded yet
 564  * @offset: ptr to current offset value
 565  * @stat: ptr to the stat
 566  **/
 567 static void i40e_stat_update32(struct i40e_hw *hw, u32 reg,
 568                                bool offset_loaded, u64 *offset, u64 *stat)
 569 {
 570         u32 new_data;
 571
 572         new_data = rd32(hw, reg);
 573         if (!offset_loaded)
 574                 *offset = new_data;
 575         if (likely(new_data >= *offset))
 576                 *stat = (u32)(new_data - *offset);
 577         else
 578                 *stat = (u32)((new_data + BIT_ULL(32)) - *offset);
 579 }
 580
 581 /**
 582  * i40e_stat_update_and_clear32 - read and clear hw reg, update a 32 bit stat
 583  * @hw: ptr to the hardware info
 584  * @reg: the hw reg to read and clear
 585  * @stat: ptr to the stat
 586  **/
 587 static void i40e_stat_update_and_clear32(struct i40e_hw *hw, u32 reg, u64 *stat)
 588 {
 589         u32 new_data = rd32(hw, reg);
 590
 591         wr32(hw, reg, 1); /* must write a nonzero value to clear register */
 592         *stat += new_data;
 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
 621         i40e_stat_update48(hw, I40E_GLV_GORCH(stat_idx),
 622                            I40E_GLV_GORCL(stat_idx),
 623                            vsi->stat_offsets_loaded,
 624                            &oes->rx_bytes, &es->rx_bytes);
 625         i40e_stat_update48(hw, I40E_GLV_UPRCH(stat_idx),
 626                            I40E_GLV_UPRCL(stat_idx),
 627                            vsi->stat_offsets_loaded,
 628                            &oes->rx_unicast, &es->rx_unicast);
 629         i40e_stat_update48(hw, I40E_GLV_MPRCH(stat_idx),
 630                            I40E_GLV_MPRCL(stat_idx),
 631                            vsi->stat_offsets_loaded,
 632                            &oes->rx_multicast, &es->rx_multicast);
 633         i40e_stat_update48(hw, I40E_GLV_BPRCH(stat_idx),
 634                            I40E_GLV_BPRCL(stat_idx),
 635                            vsi->stat_offsets_loaded,
 636                            &oes->rx_broadcast, &es->rx_broadcast);
 637
 638         i40e_stat_update48(hw, I40E_GLV_GOTCH(stat_idx),
 639                            I40E_GLV_GOTCL(stat_idx),
 640                            vsi->stat_offsets_loaded,
 641                            &oes->tx_bytes, &es->tx_bytes);
 642         i40e_stat_update48(hw, I40E_GLV_UPTCH(stat_idx),
 643                            I40E_GLV_UPTCL(stat_idx),
 644                            vsi->stat_offsets_loaded,
 645                            &oes->tx_unicast, &es->tx_unicast);
 646         i40e_stat_update48(hw, I40E_GLV_MPTCH(stat_idx),
 647                            I40E_GLV_MPTCL(stat_idx),
 648                            vsi->stat_offsets_loaded,
 649                            &oes->tx_multicast, &es->tx_multicast);
 650         i40e_stat_update48(hw, I40E_GLV_BPTCH(stat_idx),
 651                            I40E_GLV_BPTCL(stat_idx),
 652                            vsi->stat_offsets_loaded,
 653                            &oes->tx_broadcast, &es->tx_broadcast);
 654         vsi->stat_offsets_loaded = true;
 655 }
 656
 657 /**
 658  * i40e_update_veb_stats - Update Switch component statistics
 659  * @veb: the VEB being updated
 660  **/
 661 void i40e_update_veb_stats(struct i40e_veb *veb)
 662 {
 663         struct i40e_pf *pf = veb->pf;
 664         struct i40e_hw *hw = &pf->hw;
 665         struct i40e_eth_stats *oes;
 666         struct i40e_eth_stats *es;     /* device's eth stats */
 667         struct i40e_veb_tc_stats *veb_oes;
 668         struct i40e_veb_tc_stats *veb_es;
 669         int i, idx = 0;
 670
 671         idx = veb->stats_idx;
 672         es = &veb->stats;
 673         oes = &veb->stats_offsets;
 674         veb_es = &veb->tc_stats;
 675         veb_oes = &veb->tc_stats_offsets;
 676
 677         /* Gather up the stats that the hw collects */
 678         i40e_stat_update32(hw, I40E_GLSW_TDPC(idx),
 679                            veb->stat_offsets_loaded,
 680                            &oes->tx_discards, &es->tx_discards);
 681         if (hw->revision_id > 0)
 682                 i40e_stat_update32(hw, I40E_GLSW_RUPP(idx),
 683                                    veb->stat_offsets_loaded,
 684                                    &oes->rx_unknown_protocol,
 685                                    &es->rx_unknown_protocol);
 686         i40e_stat_update48(hw, I40E_GLSW_GORCH(idx), I40E_GLSW_GORCL(idx),
 687                            veb->stat_offsets_loaded,
 688                            &oes->rx_bytes, &es->rx_bytes);
 689         i40e_stat_update48(hw, I40E_GLSW_UPRCH(idx), I40E_GLSW_UPRCL(idx),
 690                            veb->stat_offsets_loaded,
 691                            &oes->rx_unicast, &es->rx_unicast);
 692         i40e_stat_update48(hw, I40E_GLSW_MPRCH(idx), I40E_GLSW_MPRCL(idx),
 693                            veb->stat_offsets_loaded,
 694                            &oes->rx_multicast, &es->rx_multicast);
 695         i40e_stat_update48(hw, I40E_GLSW_BPRCH(idx), I40E_GLSW_BPRCL(idx),
 696                            veb->stat_offsets_loaded,
 697                            &oes->rx_broadcast, &es->rx_broadcast);
 698
 699         i40e_stat_update48(hw, I40E_GLSW_GOTCH(idx), I40E_GLSW_GOTCL(idx),
 700                            veb->stat_offsets_loaded,
 701                            &oes->tx_bytes, &es->tx_bytes);
 702         i40e_stat_update48(hw, I40E_GLSW_UPTCH(idx), I40E_GLSW_UPTCL(idx),
 703                            veb->stat_offsets_loaded,
 704                            &oes->tx_unicast, &es->tx_unicast);
 705         i40e_stat_update48(hw, I40E_GLSW_MPTCH(idx), I40E_GLSW_MPTCL(idx),
 706                            veb->stat_offsets_loaded,
 707                            &oes->tx_multicast, &es->tx_multicast);
 708         i40e_stat_update48(hw, I40E_GLSW_BPTCH(idx), I40E_GLSW_BPTCL(idx),
 709                            veb->stat_offsets_loaded,
 710                            &oes->tx_broadcast, &es->tx_broadcast);
 711         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
 712                 i40e_stat_update48(hw, I40E_GLVEBTC_RPCH(i, idx),
 713                                    I40E_GLVEBTC_RPCL(i, idx),
 714                                    veb->stat_offsets_loaded,
 715                                    &veb_oes->tc_rx_packets[i],
 716                                    &veb_es->tc_rx_packets[i]);
 717                 i40e_stat_update48(hw, I40E_GLVEBTC_RBCH(i, idx),
 718                                    I40E_GLVEBTC_RBCL(i, idx),
 719                                    veb->stat_offsets_loaded,
 720                                    &veb_oes->tc_rx_bytes[i],
 721                                    &veb_es->tc_rx_bytes[i]);
 722                 i40e_stat_update48(hw, I40E_GLVEBTC_TPCH(i, idx),
 723                                    I40E_GLVEBTC_TPCL(i, idx),
 724                                    veb->stat_offsets_loaded,
 725                                    &veb_oes->tc_tx_packets[i],
 726                                    &veb_es->tc_tx_packets[i]);
 727                 i40e_stat_update48(hw, I40E_GLVEBTC_TBCH(i, idx),
 728                                    I40E_GLVEBTC_TBCL(i, idx),
 729                                    veb->stat_offsets_loaded,
 730                                    &veb_oes->tc_tx_bytes[i],
 731                                    &veb_es->tc_tx_bytes[i]);
 732         }
 733         veb->stat_offsets_loaded = true;
 734 }
 735
 736 /**
 737  * i40e_update_vsi_stats - Update the vsi statistics counters.
 738  * @vsi: the VSI to be updated
 739  *
 740  * There are a few instances where we store the same stat in a
 741  * couple of different structs.  This is partly because we have
 742  * the netdev stats that need to be filled out, which is slightly
 743  * different from the "eth_stats" defined by the chip and used in
 744  * VF communications.  We sort it out here.
 745  **/
 746 static void i40e_update_vsi_stats(struct i40e_vsi *vsi)
 747 {
 748         struct i40e_pf *pf = vsi->back;
 749         struct rtnl_link_stats64 *ons;
 750         struct rtnl_link_stats64 *ns;   /* netdev stats */
 751         struct i40e_eth_stats *oes;
 752         struct i40e_eth_stats *es;     /* device's eth stats */
 753         u32 tx_restart, tx_busy;
 754         struct i40e_ring *p;
 755         u32 rx_page, rx_buf;
 756         u64 bytes, packets;
 757         unsigned int start;
 758         u64 tx_linearize;
 759         u64 tx_force_wb;
 760         u64 rx_p, rx_b;
 761         u64 tx_p, tx_b;
 762         u16 q;
 763
 764         if (test_bit(__I40E_VSI_DOWN, vsi->state) ||
 765             test_bit(__I40E_CONFIG_BUSY, pf->state))
 766                 return;
 767
 768         ns = i40e_get_vsi_stats_struct(vsi);
 769         ons = &vsi->net_stats_offsets;
 770         es = &vsi->eth_stats;
 771         oes = &vsi->eth_stats_offsets;
 772
 773         /* Gather up the netdev and vsi stats that the driver collects
 774          * on the fly during packet processing
 775          */
 776         rx_b = rx_p = 0;
 777         tx_b = tx_p = 0;
 778         tx_restart = tx_busy = tx_linearize = tx_force_wb = 0;
 779         rx_page = 0;
 780         rx_buf = 0;
 781         rcu_read_lock();
 782         for (q = 0; q < vsi->num_queue_pairs; q++) {
 783                 /* locate Tx ring */
 784                 p = READ_ONCE(vsi->tx_rings[q]);
 785                 if (!p)
 786                         continue;
 787
 788                 do {
 789                         start = u64_stats_fetch_begin_irq(&p->syncp);
 790                         packets = p->stats.packets;
 791                         bytes = p->stats.bytes;
 792                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 793                 tx_b += bytes;
 794                 tx_p += packets;
 795                 tx_restart += p->tx_stats.restart_queue;
 796                 tx_busy += p->tx_stats.tx_busy;
 797                 tx_linearize += p->tx_stats.tx_linearize;
 798                 tx_force_wb += p->tx_stats.tx_force_wb;
 799
 800                 /* locate Rx ring */
 801                 p = READ_ONCE(vsi->rx_rings[q]);
 802                 if (!p)
 803                         continue;
 804
 805                 do {
 806                         start = u64_stats_fetch_begin_irq(&p->syncp);
 807                         packets = p->stats.packets;
 808                         bytes = p->stats.bytes;
 809                 } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 810                 rx_b += bytes;
 811                 rx_p += packets;
 812                 rx_buf += p->rx_stats.alloc_buff_failed;
 813                 rx_page += p->rx_stats.alloc_page_failed;
 814
 815                 if (i40e_enabled_xdp_vsi(vsi)) {
 816                         /* locate XDP ring */
 817                         p = READ_ONCE(vsi->xdp_rings[q]);
 818                         if (!p)
 819                                 continue;
 820
 821                         do {
 822                                 start = u64_stats_fetch_begin_irq(&p->syncp);
 823                                 packets = p->stats.packets;
 824                                 bytes = p->stats.bytes;
 825                         } while (u64_stats_fetch_retry_irq(&p->syncp, start));
 826                         tx_b += bytes;
 827                         tx_p += packets;
 828                         tx_restart += p->tx_stats.restart_queue;
 829                         tx_busy += p->tx_stats.tx_busy;
 830                         tx_linearize += p->tx_stats.tx_linearize;
 831                         tx_force_wb += p->tx_stats.tx_force_wb;
 832                 }
 833         }
 834         rcu_read_unlock();
 835         vsi->tx_restart = tx_restart;
 836         vsi->tx_busy = tx_busy;
 837         vsi->tx_linearize = tx_linearize;
 838         vsi->tx_force_wb = tx_force_wb;
 839         vsi->rx_page_failed = rx_page;
 840         vsi->rx_buf_failed = rx_buf;
 841
 842         ns->rx_packets = rx_p;
 843         ns->rx_bytes = rx_b;
 844         ns->tx_packets = tx_p;
 845         ns->tx_bytes = tx_b;
 846
 847         /* update netdev stats from eth stats */
 848         i40e_update_eth_stats(vsi);
 849         ons->tx_errors = oes->tx_errors;
 850         ns->tx_errors = es->tx_errors;
 851         ons->multicast = oes->rx_multicast;
 852         ns->multicast = es->rx_multicast;
 853         ons->rx_dropped = oes->rx_discards;
 854         ns->rx_dropped = es->rx_discards;
 855         ons->tx_dropped = oes->tx_discards;
 856         ns->tx_dropped = es->tx_discards;
 857
 858         /* pull in a couple PF stats if this is the main vsi */
 859         if (vsi == pf->vsi[pf->lan_vsi]) {
 860                 ns->rx_crc_errors = pf->stats.crc_errors;
 861                 ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes;
 862                 ns->rx_length_errors = pf->stats.rx_length_errors;
 863         }
 864 }
 865
 866 /**
 867  * i40e_update_pf_stats - Update the PF statistics counters.
 868  * @pf: the PF to be updated
 869  **/
 870 static void i40e_update_pf_stats(struct i40e_pf *pf)
 871 {
 872         struct i40e_hw_port_stats *osd = &pf->stats_offsets;
 873         struct i40e_hw_port_stats *nsd = &pf->stats;
 874         struct i40e_hw *hw = &pf->hw;
 875         u32 val;
 876         int i;
 877
 878         i40e_stat_update48(hw, I40E_GLPRT_GORCH(hw->port),
 879                            I40E_GLPRT_GORCL(hw->port),
 880                            pf->stat_offsets_loaded,
 881                            &osd->eth.rx_bytes, &nsd->eth.rx_bytes);
 882         i40e_stat_update48(hw, I40E_GLPRT_GOTCH(hw->port),
 883                            I40E_GLPRT_GOTCL(hw->port),
 884                            pf->stat_offsets_loaded,
 885                            &osd->eth.tx_bytes, &nsd->eth.tx_bytes);
 886         i40e_stat_update32(hw, I40E_GLPRT_RDPC(hw->port),
 887                            pf->stat_offsets_loaded,
 888                            &osd->eth.rx_discards,
 889                            &nsd->eth.rx_discards);
 890         i40e_stat_update48(hw, I40E_GLPRT_UPRCH(hw->port),
 891                            I40E_GLPRT_UPRCL(hw->port),
 892                            pf->stat_offsets_loaded,
 893                            &osd->eth.rx_unicast,
 894                            &nsd->eth.rx_unicast);
 895         i40e_stat_update48(hw, I40E_GLPRT_MPRCH(hw->port),
 896                            I40E_GLPRT_MPRCL(hw->port),
 897                            pf->stat_offsets_loaded,
 898                            &osd->eth.rx_multicast,
 899                            &nsd->eth.rx_multicast);
 900         i40e_stat_update48(hw, I40E_GLPRT_BPRCH(hw->port),
 901                            I40E_GLPRT_BPRCL(hw->port),
 902                            pf->stat_offsets_loaded,
 903                            &osd->eth.rx_broadcast,
 904                            &nsd->eth.rx_broadcast);
 905         i40e_stat_update48(hw, I40E_GLPRT_UPTCH(hw->port),
 906                            I40E_GLPRT_UPTCL(hw->port),
 907                            pf->stat_offsets_loaded,
 908                            &osd->eth.tx_unicast,
 909                            &nsd->eth.tx_unicast);
 910         i40e_stat_update48(hw, I40E_GLPRT_MPTCH(hw->port),
 911                            I40E_GLPRT_MPTCL(hw->port),
 912                            pf->stat_offsets_loaded,
 913                            &osd->eth.tx_multicast,
 914                            &nsd->eth.tx_multicast);
 915         i40e_stat_update48(hw, I40E_GLPRT_BPTCH(hw->port),
 916                            I40E_GLPRT_BPTCL(hw->port),
 917                            pf->stat_offsets_loaded,
 918                            &osd->eth.tx_broadcast,
 919                            &nsd->eth.tx_broadcast);
 920
 921         i40e_stat_update32(hw, I40E_GLPRT_TDOLD(hw->port),
 922                            pf->stat_offsets_loaded,
 923                            &osd->tx_dropped_link_down,
 924                            &nsd->tx_dropped_link_down);
 925
 926         i40e_stat_update32(hw, I40E_GLPRT_CRCERRS(hw->port),
 927                            pf->stat_offsets_loaded,
 928                            &osd->crc_errors, &nsd->crc_errors);
 929
 930         i40e_stat_update32(hw, I40E_GLPRT_ILLERRC(hw->port),
 931                            pf->stat_offsets_loaded,
 932                            &osd->illegal_bytes, &nsd->illegal_bytes);
 933
 934         i40e_stat_update32(hw, I40E_GLPRT_MLFC(hw->port),
 935                            pf->stat_offsets_loaded,
 936                            &osd->mac_local_faults,
 937                            &nsd->mac_local_faults);
 938         i40e_stat_update32(hw, I40E_GLPRT_MRFC(hw->port),
 939                            pf->stat_offsets_loaded,
 940                            &osd->mac_remote_faults,
 941                            &nsd->mac_remote_faults);
 942
 943         i40e_stat_update32(hw, I40E_GLPRT_RLEC(hw->port),
 944                            pf->stat_offsets_loaded,
 945                            &osd->rx_length_errors,
 946                            &nsd->rx_length_errors);
 947
 948         i40e_stat_update32(hw, I40E_GLPRT_LXONRXC(hw->port),
 949                            pf->stat_offsets_loaded,
 950                            &osd->link_xon_rx, &nsd->link_xon_rx);
 951         i40e_stat_update32(hw, I40E_GLPRT_LXONTXC(hw->port),
 952                            pf->stat_offsets_loaded,
 953                            &osd->link_xon_tx, &nsd->link_xon_tx);
 954         i40e_stat_update32(hw, I40E_GLPRT_LXOFFRXC(hw->port),
 955                            pf->stat_offsets_loaded,
 956                            &osd->link_xoff_rx, &nsd->link_xoff_rx);
 957         i40e_stat_update32(hw, I40E_GLPRT_LXOFFTXC(hw->port),
 958                            pf->stat_offsets_loaded,
 959                            &osd->link_xoff_tx, &nsd->link_xoff_tx);
 960
 961         for (i = 0; i < 8; i++) {
 962                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFRXC(hw->port, i),
 963                                    pf->stat_offsets_loaded,
 964                                    &osd->priority_xoff_rx[i],
 965                                    &nsd->priority_xoff_rx[i]);
 966                 i40e_stat_update32(hw, I40E_GLPRT_PXONRXC(hw->port, i),
 967                                    pf->stat_offsets_loaded,
 968                                    &osd->priority_xon_rx[i],
 969                                    &nsd->priority_xon_rx[i]);
 970                 i40e_stat_update32(hw, I40E_GLPRT_PXONTXC(hw->port, i),
 971                                    pf->stat_offsets_loaded,
 972                                    &osd->priority_xon_tx[i],
 973                                    &nsd->priority_xon_tx[i]);
 974                 i40e_stat_update32(hw, I40E_GLPRT_PXOFFTXC(hw->port, i),
 975                                    pf->stat_offsets_loaded,
 976                                    &osd->priority_xoff_tx[i],
 977                                    &nsd->priority_xoff_tx[i]);
 978                 i40e_stat_update32(hw,
 979                                    I40E_GLPRT_RXON2OFFCNT(hw->port, i),
 980                                    pf->stat_offsets_loaded,
 981                                    &osd->priority_xon_2_xoff[i],
 982                                    &nsd->priority_xon_2_xoff[i]);
 983         }
 984
 985         i40e_stat_update48(hw, I40E_GLPRT_PRC64H(hw->port),
 986                            I40E_GLPRT_PRC64L(hw->port),
 987                            pf->stat_offsets_loaded,
 988                            &osd->rx_size_64, &nsd->rx_size_64);
 989         i40e_stat_update48(hw, I40E_GLPRT_PRC127H(hw->port),
 990                            I40E_GLPRT_PRC127L(hw->port),
 991                            pf->stat_offsets_loaded,
 992                            &osd->rx_size_127, &nsd->rx_size_127);
 993         i40e_stat_update48(hw, I40E_GLPRT_PRC255H(hw->port),
 994                            I40E_GLPRT_PRC255L(hw->port),
 995                            pf->stat_offsets_loaded,
 996                            &osd->rx_size_255, &nsd->rx_size_255);
 997         i40e_stat_update48(hw, I40E_GLPRT_PRC511H(hw->port),
 998                            I40E_GLPRT_PRC511L(hw->port),
 999                            pf->stat_offsets_loaded,
1000                            &osd->rx_size_511, &nsd->rx_size_511);
1001         i40e_stat_update48(hw, I40E_GLPRT_PRC1023H(hw->port),
1002                            I40E_GLPRT_PRC1023L(hw->port),
1003                            pf->stat_offsets_loaded,
1004                            &osd->rx_size_1023, &nsd->rx_size_1023);
1005         i40e_stat_update48(hw, I40E_GLPRT_PRC1522H(hw->port),
1006                            I40E_GLPRT_PRC1522L(hw->port),
1007                            pf->stat_offsets_loaded,
1008                            &osd->rx_size_1522, &nsd->rx_size_1522);
1009         i40e_stat_update48(hw, I40E_GLPRT_PRC9522H(hw->port),
1010                            I40E_GLPRT_PRC9522L(hw->port),
1011                            pf->stat_offsets_loaded,
1012                            &osd->rx_size_big, &nsd->rx_size_big);
1013
1014         i40e_stat_update48(hw, I40E_GLPRT_PTC64H(hw->port),
1015                            I40E_GLPRT_PTC64L(hw->port),
1016                            pf->stat_offsets_loaded,
1017                            &osd->tx_size_64, &nsd->tx_size_64);
1018         i40e_stat_update48(hw, I40E_GLPRT_PTC127H(hw->port),
1019                            I40E_GLPRT_PTC127L(hw->port),
1020                            pf->stat_offsets_loaded,
1021                            &osd->tx_size_127, &nsd->tx_size_127);
1022         i40e_stat_update48(hw, I40E_GLPRT_PTC255H(hw->port),
1023                            I40E_GLPRT_PTC255L(hw->port),
1024                            pf->stat_offsets_loaded,
1025                            &osd->tx_size_255, &nsd->tx_size_255);
1026         i40e_stat_update48(hw, I40E_GLPRT_PTC511H(hw->port),
1027                            I40E_GLPRT_PTC511L(hw->port),
1028                            pf->stat_offsets_loaded,
1029                            &osd->tx_size_511, &nsd->tx_size_511);
1030         i40e_stat_update48(hw, I40E_GLPRT_PTC1023H(hw->port),
1031                            I40E_GLPRT_PTC1023L(hw->port),
1032                            pf->stat_offsets_loaded,
1033                            &osd->tx_size_1023, &nsd->tx_size_1023);
1034         i40e_stat_update48(hw, I40E_GLPRT_PTC1522H(hw->port),
1035                            I40E_GLPRT_PTC1522L(hw->port),
1036                            pf->stat_offsets_loaded,
1037                            &osd->tx_size_1522, &nsd->tx_size_1522);
1038         i40e_stat_update48(hw, I40E_GLPRT_PTC9522H(hw->port),
1039                            I40E_GLPRT_PTC9522L(hw->port),
1040                            pf->stat_offsets_loaded,
1041                            &osd->tx_size_big, &nsd->tx_size_big);
1042
1043         i40e_stat_update32(hw, I40E_GLPRT_RUC(hw->port),
1044                            pf->stat_offsets_loaded,
1045                            &osd->rx_undersize, &nsd->rx_undersize);
1046         i40e_stat_update32(hw, I40E_GLPRT_RFC(hw->port),
1047                            pf->stat_offsets_loaded,
1048                            &osd->rx_fragments, &nsd->rx_fragments);
1049         i40e_stat_update32(hw, I40E_GLPRT_ROC(hw->port),
1050                            pf->stat_offsets_loaded,
1051                            &osd->rx_oversize, &nsd->rx_oversize);
1052         i40e_stat_update32(hw, I40E_GLPRT_RJC(hw->port),
1053                            pf->stat_offsets_loaded,
1054                            &osd->rx_jabber, &nsd->rx_jabber);
1055
1056         /* FDIR stats */
1057         i40e_stat_update_and_clear32(hw,
1058                         I40E_GLQF_PCNT(I40E_FD_ATR_STAT_IDX(hw->pf_id)),
1059                         &nsd->fd_atr_match);
1060         i40e_stat_update_and_clear32(hw,
1061                         I40E_GLQF_PCNT(I40E_FD_SB_STAT_IDX(hw->pf_id)),
1062                         &nsd->fd_sb_match);
1063         i40e_stat_update_and_clear32(hw,
1064                         I40E_GLQF_PCNT(I40E_FD_ATR_TUNNEL_STAT_IDX(hw->pf_id)),
1065                         &nsd->fd_atr_tunnel_match);
1066
1067         val = rd32(hw, I40E_PRTPM_EEE_STAT);
1068         nsd->tx_lpi_status =
1069                        (val & I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_MASK) >>
1070                         I40E_PRTPM_EEE_STAT_TX_LPI_STATUS_SHIFT;
1071         nsd->rx_lpi_status =
1072                        (val & I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_MASK) >>
1073                         I40E_PRTPM_EEE_STAT_RX_LPI_STATUS_SHIFT;
1074         i40e_stat_update32(hw, I40E_PRTPM_TLPIC,
1075                            pf->stat_offsets_loaded,
1076                            &osd->tx_lpi_count, &nsd->tx_lpi_count);
1077         i40e_stat_update32(hw, I40E_PRTPM_RLPIC,
1078                            pf->stat_offsets_loaded,
1079                            &osd->rx_lpi_count, &nsd->rx_lpi_count);
1080
1081         if (pf->flags & I40E_FLAG_FD_SB_ENABLED &&
1082             !test_bit(__I40E_FD_SB_AUTO_DISABLED, pf->state))
1083                 nsd->fd_sb_status = true;
1084         else
1085                 nsd->fd_sb_status = false;
1086
1087         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED &&
1088             !test_bit(__I40E_FD_ATR_AUTO_DISABLED, pf->state))
1089                 nsd->fd_atr_status = true;
1090         else
1091                 nsd->fd_atr_status = false;
1092
1093         pf->stat_offsets_loaded = true;
1094 }
1095
1096 /**
1097  * i40e_update_stats - Update the various statistics counters.
1098  * @vsi: the VSI to be updated
1099  *
1100  * Update the various stats for this VSI and its related entities.
1101  **/
1102 void i40e_update_stats(struct i40e_vsi *vsi)
1103 {
1104         struct i40e_pf *pf = vsi->back;
1105
1106         if (vsi == pf->vsi[pf->lan_vsi])
1107                 i40e_update_pf_stats(pf);
1108
1109         i40e_update_vsi_stats(vsi);
1110 }
1111
1112 /**
1113  * i40e_count_filters - counts VSI mac filters
1114  * @vsi: the VSI to be searched
1115  *
1116  * Returns count of mac filters
1117  **/
1118 int i40e_count_filters(struct i40e_vsi *vsi)
1119 {
1120         struct i40e_mac_filter *f;
1121         struct hlist_node *h;
1122         int bkt;
1123         int cnt = 0;
1124
1125         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist)
1126                 ++cnt;
1127
1128         return cnt;
1129 }
1130
1131 /**
1132  * i40e_find_filter - Search VSI filter list for specific mac/vlan filter
1133  * @vsi: the VSI to be searched
1134  * @macaddr: the MAC address
1135  * @vlan: the vlan
1136  *
1137  * Returns ptr to the filter object or NULL
1138  **/
1139 static struct i40e_mac_filter *i40e_find_filter(struct i40e_vsi *vsi,
1140                                                 const u8 *macaddr, s16 vlan)
1141 {
1142         struct i40e_mac_filter *f;
1143         u64 key;
1144
1145         if (!vsi || !macaddr)
1146                 return NULL;
1147
1148         key = i40e_addr_to_hkey(macaddr);
1149         hash_for_each_possible(vsi->mac_filter_hash, f, hlist, key) {
1150                 if ((ether_addr_equal(macaddr, f->macaddr)) &&
1151                     (vlan == f->vlan))
1152                         return f;
1153         }
1154         return NULL;
1155 }
1156
1157 /**
1158  * i40e_find_mac - Find a mac addr in the macvlan filters list
1159  * @vsi: the VSI to be searched
1160  * @macaddr: the MAC address we are searching for
1161  *
1162  * Returns the first filter with the provided MAC address or NULL if
1163  * MAC address was not found
1164  **/
1165 struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, const u8 *macaddr)
1166 {
1167         struct i40e_mac_filter *f;
1168         u64 key;
1169
1170         if (!vsi || !macaddr)
1171                 return NULL;
1172
1173         key = i40e_addr_to_hkey(macaddr);
1174         hash_for_each_possible(vsi->mac_filter_hash, f, hlist, key) {
1175                 if ((ether_addr_equal(macaddr, f->macaddr)))
1176                         return f;
1177         }
1178         return NULL;
1179 }
1180
1181 /**
1182  * i40e_is_vsi_in_vlan - Check if VSI is in vlan mode
1183  * @vsi: the VSI to be searched
1184  *
1185  * Returns true if VSI is in vlan mode or false otherwise
1186  **/
1187 bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi)
1188 {
1189         /* If we have a PVID, always operate in VLAN mode */
1190         if (vsi->info.pvid)
1191                 return true;
1192
1193         /* We need to operate in VLAN mode whenever we have any filters with
1194          * a VLAN other than I40E_VLAN_ALL. We could check the table each
1195          * time, incurring search cost repeatedly. However, we can notice two
1196          * things:
1197          *
1198          * 1) the only place where we can gain a VLAN filter is in
1199          *    i40e_add_filter.
1200          *
1201          * 2) the only place where filters are actually removed is in
1202          *    i40e_sync_filters_subtask.
1203          *
1204          * Thus, we can simply use a boolean value, has_vlan_filters which we
1205          * will set to true when we add a VLAN filter in i40e_add_filter. Then
1206          * we have to perform the full search after deleting filters in
1207          * i40e_sync_filters_subtask, but we already have to search
1208          * filters here and can perform the check at the same time. This
1209          * results in avoiding embedding a loop for VLAN mode inside another
1210          * loop over all the filters, and should maintain correctness as noted
1211          * above.
1212          */
1213         return vsi->has_vlan_filter;
1214 }
1215
1216 /**
1217  * i40e_correct_mac_vlan_filters - Correct non-VLAN filters if necessary
1218  * @vsi: the VSI to configure
1219  * @tmp_add_list: list of filters ready to be added
1220  * @tmp_del_list: list of filters ready to be deleted
1221  * @vlan_filters: the number of active VLAN filters
1222  *
1223  * Update VLAN=0 and VLAN=-1 (I40E_VLAN_ANY) filters properly so that they
1224  * behave as expected. If we have any active VLAN filters remaining or about
1225  * to be added then we need to update non-VLAN filters to be marked as VLAN=0
1226  * so that they only match against untagged traffic. If we no longer have any
1227  * active VLAN filters, we need to make all non-VLAN filters marked as VLAN=-1
1228  * so that they match against both tagged and untagged traffic. In this way,
1229  * we ensure that we correctly receive the desired traffic. This ensures that
1230  * when we have an active VLAN we will receive only untagged traffic and
1231  * traffic matching active VLANs. If we have no active VLANs then we will
1232  * operate in non-VLAN mode and receive all traffic, tagged or untagged.
1233  *
1234  * Finally, in a similar fashion, this function also corrects filters when
1235  * there is an active PVID assigned to this VSI.
1236  *
1237  * In case of memory allocation failure return -ENOMEM. Otherwise, return 0.
1238  *
1239  * This function is only expected to be called from within
1240  * i40e_sync_vsi_filters.
1241  *
1242  * NOTE: This function expects to be called while under the
1243  * mac_filter_hash_lock
1244  */
1245 static int i40e_correct_mac_vlan_filters(struct i40e_vsi *vsi,
1246                                          struct hlist_head *tmp_add_list,
1247                                          struct hlist_head *tmp_del_list,
1248                                          int vlan_filters)
1249 {
1250         s16 pvid = le16_to_cpu(vsi->info.pvid);
1251         struct i40e_mac_filter *f, *add_head;
1252         struct i40e_new_mac_filter *new;
1253         struct hlist_node *h;
1254         int bkt, new_vlan;
1255
1256         /* To determine if a particular filter needs to be replaced we
1257          * have the three following conditions:
1258          *
1259          * a) if we have a PVID assigned, then all filters which are
1260          *    not marked as VLAN=PVID must be replaced with filters that
1261          *    are.
1262          * b) otherwise, if we have any active VLANS, all filters
1263          *    which are marked as VLAN=-1 must be replaced with
1264          *    filters marked as VLAN=0
1265          * c) finally, if we do not have any active VLANS, all filters
1266          *    which are marked as VLAN=0 must be replaced with filters
1267          *    marked as VLAN=-1
1268          */
1269
1270         /* Update the filters about to be added in place */
1271         hlist_for_each_entry(new, tmp_add_list, hlist) {
1272                 if (pvid && new->f->vlan != pvid)
1273                         new->f->vlan = pvid;
1274                 else if (vlan_filters && new->f->vlan == I40E_VLAN_ANY)
1275                         new->f->vlan = 0;
1276                 else if (!vlan_filters && new->f->vlan == 0)
1277                         new->f->vlan = I40E_VLAN_ANY;
1278         }
1279
1280         /* Update the remaining active filters */
1281         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
1282                 /* Combine the checks for whether a filter needs to be changed
1283                  * and then determine the new VLAN inside the if block, in
1284                  * order to avoid duplicating code for adding the new filter
1285                  * then deleting the old filter.
1286                  */
1287                 if ((pvid && f->vlan != pvid) ||
1288                     (vlan_filters && f->vlan == I40E_VLAN_ANY) ||
1289                     (!vlan_filters && f->vlan == 0)) {
1290                         /* Determine the new vlan we will be adding */
1291                         if (pvid)
1292                                 new_vlan = pvid;
1293                         else if (vlan_filters)
1294                                 new_vlan = 0;
1295                         else
1296                                 new_vlan = I40E_VLAN_ANY;
1297
1298                         /* Create the new filter */
1299                         add_head = i40e_add_filter(vsi, f->macaddr, new_vlan);
1300                         if (!add_head)
1301                                 return -ENOMEM;
1302
1303                         /* Create a temporary i40e_new_mac_filter */
1304                         new = kzalloc(sizeof(*new), GFP_ATOMIC);
1305                         if (!new)
1306                                 return -ENOMEM;
1307
1308                         new->f = add_head;
1309                         new->state = add_head->state;
1310
1311                         /* Add the new filter to the tmp list */
1312                         hlist_add_head(&new->hlist, tmp_add_list);
1313
1314                         /* Put the original filter into the delete list */
1315                         f->state = I40E_FILTER_REMOVE;
1316                         hash_del(&f->hlist);
1317                         hlist_add_head(&f->hlist, tmp_del_list);
1318                 }
1319         }
1320
1321         vsi->has_vlan_filter = !!vlan_filters;
1322
1323         return 0;
1324 }
1325
1326 /**
1327  * i40e_rm_default_mac_filter - Remove the default MAC filter set by NVM
1328  * @vsi: the PF Main VSI - inappropriate for any other VSI
1329  * @macaddr: the MAC address
1330  *
1331  * Remove whatever filter the firmware set up so the driver can manage
1332  * its own filtering intelligently.
1333  **/
1334 static void i40e_rm_default_mac_filter(struct i40e_vsi *vsi, u8 *macaddr)
1335 {
1336         struct i40e_aqc_remove_macvlan_element_data element;
1337         struct i40e_pf *pf = vsi->back;
1338
1339         /* Only appropriate for the PF main VSI */
1340         if (vsi->type != I40E_VSI_MAIN)
1341                 return;
1342
1343         memset(&element, 0, sizeof(element));
1344         ether_addr_copy(element.mac_addr, macaddr);
1345         element.vlan_tag = 0;
1346         /* Ignore error returns, some firmware does it this way... */
1347         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
1348         i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1349
1350         memset(&element, 0, sizeof(element));
1351         ether_addr_copy(element.mac_addr, macaddr);
1352         element.vlan_tag = 0;
1353         /* ...and some firmware does it this way. */
1354         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH |
1355                         I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
1356         i40e_aq_remove_macvlan(&pf->hw, vsi->seid, &element, 1, NULL);
1357 }
1358
1359 /**
1360  * i40e_add_filter - Add a mac/vlan filter to the VSI
1361  * @vsi: the VSI to be searched
1362  * @macaddr: the MAC address
1363  * @vlan: the vlan
1364  *
1365  * Returns ptr to the filter object or NULL when no memory available.
1366  *
1367  * NOTE: This function is expected to be called with mac_filter_hash_lock
1368  * being held.
1369  **/
1370 struct i40e_mac_filter *i40e_add_filter(struct i40e_vsi *vsi,
1371                                         const u8 *macaddr, s16 vlan)
1372 {
1373         struct i40e_mac_filter *f;
1374         u64 key;
1375
1376         if (!vsi || !macaddr)
1377                 return NULL;
1378
1379         f = i40e_find_filter(vsi, macaddr, vlan);
1380         if (!f) {
1381                 f = kzalloc(sizeof(*f), GFP_ATOMIC);
1382                 if (!f)
1383                         return NULL;
1384
1385                 /* Update the boolean indicating if we need to function in
1386                  * VLAN mode.
1387                  */
1388                 if (vlan >= 0)
1389                         vsi->has_vlan_filter = true;
1390
1391                 ether_addr_copy(f->macaddr, macaddr);
1392                 f->vlan = vlan;
1393                 f->state = I40E_FILTER_NEW;
1394                 INIT_HLIST_NODE(&f->hlist);
1395
1396                 key = i40e_addr_to_hkey(macaddr);
1397                 hash_add(vsi->mac_filter_hash, &f->hlist, key);
1398
1399                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1400                 set_bit(__I40E_MACVLAN_SYNC_PENDING, vsi->back->state);
1401         }
1402
1403         /* If we're asked to add a filter that has been marked for removal, it
1404          * is safe to simply restore it to active state. __i40e_del_filter
1405          * will have simply deleted any filters which were previously marked
1406          * NEW or FAILED, so if it is currently marked REMOVE it must have
1407          * previously been ACTIVE. Since we haven't yet run the sync filters
1408          * task, just restore this filter to the ACTIVE state so that the
1409          * sync task leaves it in place
1410          */
1411         if (f->state == I40E_FILTER_REMOVE)
1412                 f->state = I40E_FILTER_ACTIVE;
1413
1414         return f;
1415 }
1416
1417 /**
1418  * __i40e_del_filter - Remove a specific filter from the VSI
1419  * @vsi: VSI to remove from
1420  * @f: the filter to remove from the list
1421  *
1422  * This function should be called instead of i40e_del_filter only if you know
1423  * the exact filter you will remove already, such as via i40e_find_filter or
1424  * i40e_find_mac.
1425  *
1426  * NOTE: This function is expected to be called with mac_filter_hash_lock
1427  * being held.
1428  * ANOTHER NOTE: This function MUST be called from within the context of
1429  * the "safe" variants of any list iterators, e.g. list_for_each_entry_safe()
1430  * instead of list_for_each_entry().
1431  **/
1432 void __i40e_del_filter(struct i40e_vsi *vsi, struct i40e_mac_filter *f)
1433 {
1434         if (!f)
1435                 return;
1436
1437         /* If the filter was never added to firmware then we can just delete it
1438          * directly and we don't want to set the status to remove or else an
1439          * admin queue command will unnecessarily fire.
1440          */
1441         if ((f->state == I40E_FILTER_FAILED) ||
1442             (f->state == I40E_FILTER_NEW)) {
1443                 hash_del(&f->hlist);
1444                 kfree(f);
1445         } else {
1446                 f->state = I40E_FILTER_REMOVE;
1447         }
1448
1449         vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1450         set_bit(__I40E_MACVLAN_SYNC_PENDING, vsi->back->state);
1451 }
1452
1453 /**
1454  * i40e_del_filter - Remove a MAC/VLAN filter from the VSI
1455  * @vsi: the VSI to be searched
1456  * @macaddr: the MAC address
1457  * @vlan: the VLAN
1458  *
1459  * NOTE: This function is expected to be called with mac_filter_hash_lock
1460  * being held.
1461  * ANOTHER NOTE: This function MUST be called from within the context of
1462  * the "safe" variants of any list iterators, e.g. list_for_each_entry_safe()
1463  * instead of list_for_each_entry().
1464  **/
1465 void i40e_del_filter(struct i40e_vsi *vsi, const u8 *macaddr, s16 vlan)
1466 {
1467         struct i40e_mac_filter *f;
1468
1469         if (!vsi || !macaddr)
1470                 return;
1471
1472         f = i40e_find_filter(vsi, macaddr, vlan);
1473         __i40e_del_filter(vsi, f);
1474 }
1475
1476 /**
1477  * i40e_add_mac_filter - Add a MAC filter for all active VLANs
1478  * @vsi: the VSI to be searched
1479  * @macaddr: the mac address to be filtered
1480  *
1481  * If we're not in VLAN mode, just add the filter to I40E_VLAN_ANY. Otherwise,
1482  * go through all the macvlan filters and add a macvlan filter for each
1483  * unique vlan that already exists. If a PVID has been assigned, instead only
1484  * add the macaddr to that VLAN.
1485  *
1486  * Returns last filter added on success, else NULL
1487  **/
1488 struct i40e_mac_filter *i40e_add_mac_filter(struct i40e_vsi *vsi,
1489                                             const u8 *macaddr)
1490 {
1491         struct i40e_mac_filter *f, *add = NULL;
1492         struct hlist_node *h;
1493         int bkt;
1494
1495         if (vsi->info.pvid)
1496                 return i40e_add_filter(vsi, macaddr,
1497                                        le16_to_cpu(vsi->info.pvid));
1498
1499         if (!i40e_is_vsi_in_vlan(vsi))
1500                 return i40e_add_filter(vsi, macaddr, I40E_VLAN_ANY);
1501
1502         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
1503                 if (f->state == I40E_FILTER_REMOVE)
1504                         continue;
1505                 add = i40e_add_filter(vsi, macaddr, f->vlan);
1506                 if (!add)
1507                         return NULL;
1508         }
1509
1510         return add;
1511 }
1512
1513 /**
1514  * i40e_del_mac_filter - Remove a MAC filter from all VLANs
1515  * @vsi: the VSI to be searched
1516  * @macaddr: the mac address to be removed
1517  *
1518  * Removes a given MAC address from a VSI regardless of what VLAN it has been
1519  * associated with.
1520  *
1521  * Returns 0 for success, or error
1522  **/
1523 int i40e_del_mac_filter(struct i40e_vsi *vsi, const u8 *macaddr)
1524 {
1525         struct i40e_mac_filter *f;
1526         struct hlist_node *h;
1527         bool found = false;
1528         int bkt;
1529
1530         lockdep_assert_held(&vsi->mac_filter_hash_lock);
1531         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
1532                 if (ether_addr_equal(macaddr, f->macaddr)) {
1533                         __i40e_del_filter(vsi, f);
1534                         found = true;
1535                 }
1536         }
1537
1538         if (found)
1539                 return 0;
1540         else
1541                 return -ENOENT;
1542 }
1543
1544 /**
1545  * i40e_set_mac - NDO callback to set mac address
1546  * @netdev: network interface device structure
1547  * @p: pointer to an address structure
1548  *
1549  * Returns 0 on success, negative on failure
1550  **/
1551 static int i40e_set_mac(struct net_device *netdev, void *p)
1552 {
1553         struct i40e_netdev_priv *np = netdev_priv(netdev);
1554         struct i40e_vsi *vsi = np->vsi;
1555         struct i40e_pf *pf = vsi->back;
1556         struct i40e_hw *hw = &pf->hw;
1557         struct sockaddr *addr = p;
1558
1559         if (!is_valid_ether_addr(addr->sa_data))
1560                 return -EADDRNOTAVAIL;
1561
1562         if (ether_addr_equal(netdev->dev_addr, addr->sa_data)) {
1563                 netdev_info(netdev, "already using mac address %pM\n",
1564                             addr->sa_data);
1565                 return 0;
1566         }
1567
1568         if (test_bit(__I40E_DOWN, pf->state) ||
1569             test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state))
1570                 return -EADDRNOTAVAIL;
1571
1572         if (ether_addr_equal(hw->mac.addr, addr->sa_data))
1573                 netdev_info(netdev, "returning to hw mac address %pM\n",
1574                             hw->mac.addr);
1575         else
1576                 netdev_info(netdev, "set new mac address %pM\n", addr->sa_data);
1577
1578         /* Copy the address first, so that we avoid a possible race with
1579          * .set_rx_mode().
1580          * - Remove old address from MAC filter
1581          * - Copy new address
1582          * - Add new address to MAC filter
1583          */
1584         spin_lock_bh(&vsi->mac_filter_hash_lock);
1585         i40e_del_mac_filter(vsi, netdev->dev_addr);
1586         ether_addr_copy(netdev->dev_addr, addr->sa_data);
1587         i40e_add_mac_filter(vsi, netdev->dev_addr);
1588         spin_unlock_bh(&vsi->mac_filter_hash_lock);
1589
1590         if (vsi->type == I40E_VSI_MAIN) {
1591                 i40e_status ret;
1592
1593                 ret = i40e_aq_mac_address_write(hw, I40E_AQC_WRITE_TYPE_LAA_WOL,
1594                                                 addr->sa_data, NULL);
1595                 if (ret)
1596                         netdev_info(netdev, "Ignoring error from firmware on LAA update, status %s, AQ ret %s\n",
1597                                     i40e_stat_str(hw, ret),
1598                                     i40e_aq_str(hw, hw->aq.asq_last_status));
1599         }
1600
1601         /* schedule our worker thread which will take care of
1602          * applying the new filter changes
1603          */
1604         i40e_service_event_schedule(pf);
1605         return 0;
1606 }
1607
1608 /**
1609  * i40e_config_rss_aq - Prepare for RSS using AQ commands
1610  * @vsi: vsi structure
1611  * @seed: RSS hash seed
1612  **/
1613 static int i40e_config_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
1614                               u8 *lut, u16 lut_size)
1615 {
1616         struct i40e_pf *pf = vsi->back;
1617         struct i40e_hw *hw = &pf->hw;
1618         int ret = 0;
1619
1620         if (seed) {
1621                 struct i40e_aqc_get_set_rss_key_data *seed_dw =
1622                         (struct i40e_aqc_get_set_rss_key_data *)seed;
1623                 ret = i40e_aq_set_rss_key(hw, vsi->id, seed_dw);
1624                 if (ret) {
1625                         dev_info(&pf->pdev->dev,
1626                                  "Cannot set RSS key, err %s aq_err %s\n",
1627                                  i40e_stat_str(hw, ret),
1628                                  i40e_aq_str(hw, hw->aq.asq_last_status));
1629                         return ret;
1630                 }
1631         }
1632         if (lut) {
1633                 bool pf_lut = vsi->type == I40E_VSI_MAIN;
1634
1635                 ret = i40e_aq_set_rss_lut(hw, vsi->id, pf_lut, lut, lut_size);
1636                 if (ret) {
1637                         dev_info(&pf->pdev->dev,
1638                                  "Cannot set RSS lut, err %s aq_err %s\n",
1639                                  i40e_stat_str(hw, ret),
1640                                  i40e_aq_str(hw, hw->aq.asq_last_status));
1641                         return ret;
1642                 }
1643         }
1644         return ret;
1645 }
1646
1647 /**
1648  * i40e_vsi_config_rss - Prepare for VSI(VMDq) RSS if used
1649  * @vsi: VSI structure
1650  **/
1651 static int i40e_vsi_config_rss(struct i40e_vsi *vsi)
1652 {
1653         struct i40e_pf *pf = vsi->back;
1654         u8 seed[I40E_HKEY_ARRAY_SIZE];
1655         u8 *lut;
1656         int ret;
1657
1658         if (!(pf->hw_features & I40E_HW_RSS_AQ_CAPABLE))
1659                 return 0;
1660         if (!vsi->rss_size)
1661                 vsi->rss_size = min_t(int, pf->alloc_rss_size,
1662                                       vsi->num_queue_pairs);
1663         if (!vsi->rss_size)
1664                 return -EINVAL;
1665         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
1666         if (!lut)
1667                 return -ENOMEM;
1668
1669         /* Use the user configured hash keys and lookup table if there is one,
1670          * otherwise use default
1671          */
1672         if (vsi->rss_lut_user)
1673                 memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
1674         else
1675                 i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
1676         if (vsi->rss_hkey_user)
1677                 memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
1678         else
1679                 netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
1680         ret = i40e_config_rss_aq(vsi, seed, lut, vsi->rss_table_size);
1681         kfree(lut);
1682         return ret;
1683 }
1684
1685 /**
1686  * i40e_vsi_setup_queue_map_mqprio - Prepares mqprio based tc_config
1687  * @vsi: the VSI being configured,
1688  * @ctxt: VSI context structure
1689  * @enabled_tc: number of traffic classes to enable
1690  *
1691  * Prepares VSI tc_config to have queue configurations based on MQPRIO options.
1692  **/
1693 static int i40e_vsi_setup_queue_map_mqprio(struct i40e_vsi *vsi,
1694                                            struct i40e_vsi_context *ctxt,
1695                                            u8 enabled_tc)
1696 {
1697         u16 qcount = 0, max_qcount, qmap, sections = 0;
1698         int i, override_q, pow, num_qps, ret;
1699         u8 netdev_tc = 0, offset = 0;
1700
1701         if (vsi->type != I40E_VSI_MAIN)
1702                 return -EINVAL;
1703         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1704         sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1705         vsi->tc_config.numtc = vsi->mqprio_qopt.qopt.num_tc;
1706         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1707         num_qps = vsi->mqprio_qopt.qopt.count[0];
1708
1709         /* find the next higher power-of-2 of num queue pairs */
1710         pow = ilog2(num_qps);
1711         if (!is_power_of_2(num_qps))
1712                 pow++;
1713         qmap = (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1714                 (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1715
1716         /* Setup queue offset/count for all TCs for given VSI */
1717         max_qcount = vsi->mqprio_qopt.qopt.count[0];
1718         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1719                 /* See if the given TC is enabled for the given VSI */
1720                 if (vsi->tc_config.enabled_tc & BIT(i)) {
1721                         offset = vsi->mqprio_qopt.qopt.offset[i];
1722                         qcount = vsi->mqprio_qopt.qopt.count[i];
1723                         if (qcount > max_qcount)
1724                                 max_qcount = qcount;
1725                         vsi->tc_config.tc_info[i].qoffset = offset;
1726                         vsi->tc_config.tc_info[i].qcount = qcount;
1727                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1728                 } else {
1729                         /* TC is not enabled so set the offset to
1730                          * default queue and allocate one queue
1731                          * for the given TC.
1732                          */
1733                         vsi->tc_config.tc_info[i].qoffset = 0;
1734                         vsi->tc_config.tc_info[i].qcount = 1;
1735                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1736                 }
1737         }
1738
1739         /* Set actual Tx/Rx queue pairs */
1740         vsi->num_queue_pairs = offset + qcount;
1741
1742         /* Setup queue TC[0].qmap for given VSI context */
1743         ctxt->info.tc_mapping[0] = cpu_to_le16(qmap);
1744         ctxt->info.mapping_flags |= cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1745         ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1746         ctxt->info.valid_sections |= cpu_to_le16(sections);
1747
1748         /* Reconfigure RSS for main VSI with max queue count */
1749         vsi->rss_size = max_qcount;
1750         ret = i40e_vsi_config_rss(vsi);
1751         if (ret) {
1752                 dev_info(&vsi->back->pdev->dev,
1753                          "Failed to reconfig rss for num_queues (%u)\n",
1754                          max_qcount);
1755                 return ret;
1756         }
1757         vsi->reconfig_rss = true;
1758         dev_dbg(&vsi->back->pdev->dev,
1759                 "Reconfigured rss with num_queues (%u)\n", max_qcount);
1760
1761         /* Find queue count available for channel VSIs and starting offset
1762          * for channel VSIs
1763          */
1764         override_q = vsi->mqprio_qopt.qopt.count[0];
1765         if (override_q && override_q < vsi->num_queue_pairs) {
1766                 vsi->cnt_q_avail = vsi->num_queue_pairs - override_q;
1767                 vsi->next_base_queue = override_q;
1768         }
1769         return 0;
1770 }
1771
1772 /**
1773  * i40e_vsi_setup_queue_map - Setup a VSI queue map based on enabled_tc
1774  * @vsi: the VSI being setup
1775  * @ctxt: VSI context structure
1776  * @enabled_tc: Enabled TCs bitmap
1777  * @is_add: True if called before Add VSI
1778  *
1779  * Setup VSI queue mapping for enabled traffic classes.
1780  **/
1781 static void i40e_vsi_setup_queue_map(struct i40e_vsi *vsi,
1782                                      struct i40e_vsi_context *ctxt,
1783                                      u8 enabled_tc,
1784                                      bool is_add)
1785 {
1786         struct i40e_pf *pf = vsi->back;
1787         u16 sections = 0;
1788         u8 netdev_tc = 0;
1789         u16 numtc = 1;
1790         u16 qcount;
1791         u8 offset;
1792         u16 qmap;
1793         int i;
1794         u16 num_tc_qps = 0;
1795
1796         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
1797         offset = 0;
1798
1799         /* Number of queues per enabled TC */
1800         num_tc_qps = vsi->alloc_queue_pairs;
1801         if (enabled_tc && (vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
1802                 /* Find numtc from enabled TC bitmap */
1803                 for (i = 0, numtc = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1804                         if (enabled_tc & BIT(i)) /* TC is enabled */
1805                                 numtc++;
1806                 }
1807                 if (!numtc) {
1808                         dev_warn(&pf->pdev->dev, "DCB is enabled but no TC enabled, forcing TC0\n");
1809                         numtc = 1;
1810                 }
1811                 num_tc_qps = num_tc_qps / numtc;
1812                 num_tc_qps = min_t(int, num_tc_qps,
1813                                    i40e_pf_get_max_q_per_tc(pf));
1814         }
1815
1816         vsi->tc_config.numtc = numtc;
1817         vsi->tc_config.enabled_tc = enabled_tc ? enabled_tc : 1;
1818
1819         /* Do not allow use more TC queue pairs than MSI-X vectors exist */
1820         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1821                 num_tc_qps = min_t(int, num_tc_qps, pf->num_lan_msix);
1822
1823         /* Setup queue offset/count for all TCs for given VSI */
1824         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
1825                 /* See if the given TC is enabled for the given VSI */
1826                 if (vsi->tc_config.enabled_tc & BIT(i)) {
1827                         /* TC is enabled */
1828                         int pow, num_qps;
1829
1830                         switch (vsi->type) {
1831                         case I40E_VSI_MAIN:
1832                                 if (!(pf->flags & (I40E_FLAG_FD_SB_ENABLED |
1833                                     I40E_FLAG_FD_ATR_ENABLED)) ||
1834                                     vsi->tc_config.enabled_tc != 1) {
1835                                         qcount = min_t(int, pf->alloc_rss_size,
1836                                                        num_tc_qps);
1837                                         break;
1838                                 }
1839                                 fallthrough;
1840                         case I40E_VSI_FDIR:
1841                         case I40E_VSI_SRIOV:
1842                         case I40E_VSI_VMDQ2:
1843                         default:
1844                                 qcount = num_tc_qps;
1845                                 WARN_ON(i != 0);
1846                                 break;
1847                         }
1848                         vsi->tc_config.tc_info[i].qoffset = offset;
1849                         vsi->tc_config.tc_info[i].qcount = qcount;
1850
1851                         /* find the next higher power-of-2 of num queue pairs */
1852                         num_qps = qcount;
1853                         pow = 0;
1854                         while (num_qps && (BIT_ULL(pow) < qcount)) {
1855                                 pow++;
1856                                 num_qps >>= 1;
1857                         }
1858
1859                         vsi->tc_config.tc_info[i].netdev_tc = netdev_tc++;
1860                         qmap =
1861                             (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
1862                             (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
1863
1864                         offset += qcount;
1865                 } else {
1866                         /* TC is not enabled so set the offset to
1867                          * default queue and allocate one queue
1868                          * for the given TC.
1869                          */
1870                         vsi->tc_config.tc_info[i].qoffset = 0;
1871                         vsi->tc_config.tc_info[i].qcount = 1;
1872                         vsi->tc_config.tc_info[i].netdev_tc = 0;
1873
1874                         qmap = 0;
1875                 }
1876                 ctxt->info.tc_mapping[i] = cpu_to_le16(qmap);
1877         }
1878
1879         /* Set actual Tx/Rx queue pairs */
1880         vsi->num_queue_pairs = offset;
1881         if ((vsi->type == I40E_VSI_MAIN) && (numtc == 1)) {
1882                 if (vsi->req_queue_pairs > 0)
1883                         vsi->num_queue_pairs = vsi->req_queue_pairs;
1884                 else if (pf->flags & I40E_FLAG_MSIX_ENABLED)
1885                         vsi->num_queue_pairs = pf->num_lan_msix;
1886         }
1887
1888         /* Scheduler section valid can only be set for ADD VSI */
1889         if (is_add) {
1890                 sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
1891
1892                 ctxt->info.up_enable_bits = enabled_tc;
1893         }
1894         if (vsi->type == I40E_VSI_SRIOV) {
1895                 ctxt->info.mapping_flags |=
1896                                      cpu_to_le16(I40E_AQ_VSI_QUE_MAP_NONCONTIG);
1897                 for (i = 0; i < vsi->num_queue_pairs; i++)
1898                         ctxt->info.queue_mapping[i] =
1899                                                cpu_to_le16(vsi->base_queue + i);
1900         } else {
1901                 ctxt->info.mapping_flags |=
1902                                         cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
1903                 ctxt->info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
1904         }
1905         ctxt->info.valid_sections |= cpu_to_le16(sections);
1906 }
1907
1908 /**
1909  * i40e_addr_sync - Callback for dev_(mc|uc)_sync to add address
1910  * @netdev: the netdevice
1911  * @addr: address to add
1912  *
1913  * Called by __dev_(mc|uc)_sync when an address needs to be added. We call
1914  * __dev_(uc|mc)_sync from .set_rx_mode and guarantee to hold the hash lock.
1915  */
1916 static int i40e_addr_sync(struct net_device *netdev, const u8 *addr)
1917 {
1918         struct i40e_netdev_priv *np = netdev_priv(netdev);
1919         struct i40e_vsi *vsi = np->vsi;
1920
1921         if (i40e_add_mac_filter(vsi, addr))
1922                 return 0;
1923         else
1924                 return -ENOMEM;
1925 }
1926
1927 /**
1928  * i40e_addr_unsync - Callback for dev_(mc|uc)_sync to remove address
1929  * @netdev: the netdevice
1930  * @addr: address to add
1931  *
1932  * Called by __dev_(mc|uc)_sync when an address needs to be removed. We call
1933  * __dev_(uc|mc)_sync from .set_rx_mode and guarantee to hold the hash lock.
1934  */
1935 static int i40e_addr_unsync(struct net_device *netdev, const u8 *addr)
1936 {
1937         struct i40e_netdev_priv *np = netdev_priv(netdev);
1938         struct i40e_vsi *vsi = np->vsi;
1939
1940         /* Under some circumstances, we might receive a request to delete
1941          * our own device address from our uc list. Because we store the
1942          * device address in the VSI's MAC/VLAN filter list, we need to ignore
1943          * such requests and not delete our device address from this list.
1944          */
1945         if (ether_addr_equal(addr, netdev->dev_addr))
1946                 return 0;
1947
1948         i40e_del_mac_filter(vsi, addr);
1949
1950         return 0;
1951 }
1952
1953 /**
1954  * i40e_set_rx_mode - NDO callback to set the netdev filters
1955  * @netdev: network interface device structure
1956  **/
1957 static void i40e_set_rx_mode(struct net_device *netdev)
1958 {
1959         struct i40e_netdev_priv *np = netdev_priv(netdev);
1960         struct i40e_vsi *vsi = np->vsi;
1961
1962         spin_lock_bh(&vsi->mac_filter_hash_lock);
1963
1964         __dev_uc_sync(netdev, i40e_addr_sync, i40e_addr_unsync);
1965         __dev_mc_sync(netdev, i40e_addr_sync, i40e_addr_unsync);
1966
1967         spin_unlock_bh(&vsi->mac_filter_hash_lock);
1968
1969         /* check for other flag changes */
1970         if (vsi->current_netdev_flags != vsi->netdev->flags) {
1971                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
1972                 set_bit(__I40E_MACVLAN_SYNC_PENDING, vsi->back->state);
1973         }
1974 }
1975
1976 /**
1977  * i40e_undo_del_filter_entries - Undo the changes made to MAC filter entries
1978  * @vsi: Pointer to VSI struct
1979  * @from: Pointer to list which contains MAC filter entries - changes to
1980  *        those entries needs to be undone.
1981  *
1982  * MAC filter entries from this list were slated for deletion.
1983  **/
1984 static void i40e_undo_del_filter_entries(struct i40e_vsi *vsi,
1985                                          struct hlist_head *from)
1986 {
1987         struct i40e_mac_filter *f;
1988         struct hlist_node *h;
1989
1990         hlist_for_each_entry_safe(f, h, from, hlist) {
1991                 u64 key = i40e_addr_to_hkey(f->macaddr);
1992
1993                 /* Move the element back into MAC filter list*/
1994                 hlist_del(&f->hlist);
1995                 hash_add(vsi->mac_filter_hash, &f->hlist, key);
1996         }
1997 }
1998
1999 /**
2000  * i40e_undo_add_filter_entries - Undo the changes made to MAC filter entries
2001  * @vsi: Pointer to vsi struct
2002  * @from: Pointer to list which contains MAC filter entries - changes to
2003  *        those entries needs to be undone.
2004  *
2005  * MAC filter entries from this list were slated for addition.
2006  **/
2007 static void i40e_undo_add_filter_entries(struct i40e_vsi *vsi,
2008                                          struct hlist_head *from)
2009 {
2010         struct i40e_new_mac_filter *new;
2011         struct hlist_node *h;
2012
2013         hlist_for_each_entry_safe(new, h, from, hlist) {
2014                 /* We can simply free the wrapper structure */
2015                 hlist_del(&new->hlist);
2016                 kfree(new);
2017         }
2018 }
2019
2020 /**
2021  * i40e_next_entry - Get the next non-broadcast filter from a list
2022  * @next: pointer to filter in list
2023  *
2024  * Returns the next non-broadcast filter in the list. Required so that we
2025  * ignore broadcast filters within the list, since these are not handled via
2026  * the normal firmware update path.
2027  */
2028 static
2029 struct i40e_new_mac_filter *i40e_next_filter(struct i40e_new_mac_filter *next)
2030 {
2031         hlist_for_each_entry_continue(next, hlist) {
2032                 if (!is_broadcast_ether_addr(next->f->macaddr))
2033                         return next;
2034         }
2035
2036         return NULL;
2037 }
2038
2039 /**
2040  * i40e_update_filter_state - Update filter state based on return data
2041  * from firmware
2042  * @count: Number of filters added
2043  * @add_list: return data from fw
2044  * @add_head: pointer to first filter in current batch
2045  *
2046  * MAC filter entries from list were slated to be added to device. Returns
2047  * number of successful filters. Note that 0 does NOT mean success!
2048  **/
2049 static int
2050 i40e_update_filter_state(int count,
2051                          struct i40e_aqc_add_macvlan_element_data *add_list,
2052                          struct i40e_new_mac_filter *add_head)
2053 {
2054         int retval = 0;
2055         int i;
2056
2057         for (i = 0; i < count; i++) {
2058                 /* Always check status of each filter. We don't need to check
2059                  * the firmware return status because we pre-set the filter
2060                  * status to I40E_AQC_MM_ERR_NO_RES when sending the filter
2061                  * request to the adminq. Thus, if it no longer matches then
2062                  * we know the filter is active.
2063                  */
2064                 if (add_list[i].match_method == I40E_AQC_MM_ERR_NO_RES) {
2065                         add_head->state = I40E_FILTER_FAILED;
2066                 } else {
2067                         add_head->state = I40E_FILTER_ACTIVE;
2068                         retval++;
2069                 }
2070
2071                 add_head = i40e_next_filter(add_head);
2072                 if (!add_head)
2073                         break;
2074         }
2075
2076         return retval;
2077 }
2078
2079 /**
2080  * i40e_aqc_del_filters - Request firmware to delete a set of filters
2081  * @vsi: ptr to the VSI
2082  * @vsi_name: name to display in messages
2083  * @list: the list of filters to send to firmware
2084  * @num_del: the number of filters to delete
2085  * @retval: Set to -EIO on failure to delete
2086  *
2087  * Send a request to firmware via AdminQ to delete a set of filters. Uses
2088  * *retval instead of a return value so that success does not force ret_val to
2089  * be set to 0. This ensures that a sequence of calls to this function
2090  * preserve the previous value of *retval on successful delete.
2091  */
2092 static
2093 void i40e_aqc_del_filters(struct i40e_vsi *vsi, const char *vsi_name,
2094                           struct i40e_aqc_remove_macvlan_element_data *list,
2095                           int num_del, int *retval)
2096 {
2097         struct i40e_hw *hw = &vsi->back->hw;
2098         i40e_status aq_ret;
2099         int aq_err;
2100
2101         aq_ret = i40e_aq_remove_macvlan(hw, vsi->seid, list, num_del, NULL);
2102         aq_err = hw->aq.asq_last_status;
2103
2104         /* Explicitly ignore and do not report when firmware returns ENOENT */
2105         if (aq_ret && !(aq_err == I40E_AQ_RC_ENOENT)) {
2106                 *retval = -EIO;
2107                 dev_info(&vsi->back->pdev->dev,
2108                          "ignoring delete macvlan error on %s, err %s, aq_err %s\n",
2109                          vsi_name, i40e_stat_str(hw, aq_ret),
2110                          i40e_aq_str(hw, aq_err));
2111         }
2112 }
2113
2114 /**
2115  * i40e_aqc_add_filters - Request firmware to add a set of filters
2116  * @vsi: ptr to the VSI
2117  * @vsi_name: name to display in messages
2118  * @list: the list of filters to send to firmware
2119  * @add_head: Position in the add hlist
2120  * @num_add: the number of filters to add
2121  *
2122  * Send a request to firmware via AdminQ to add a chunk of filters. Will set
2123  * __I40E_VSI_OVERFLOW_PROMISC bit in vsi->state if the firmware has run out of
2124  * space for more filters.
2125  */
2126 static
2127 void i40e_aqc_add_filters(struct i40e_vsi *vsi, const char *vsi_name,
2128                           struct i40e_aqc_add_macvlan_element_data *list,
2129                           struct i40e_new_mac_filter *add_head,
2130                           int num_add)
2131 {
2132         struct i40e_hw *hw = &vsi->back->hw;
2133         int aq_err, fcnt;
2134
2135         i40e_aq_add_macvlan(hw, vsi->seid, list, num_add, NULL);
2136         aq_err = hw->aq.asq_last_status;
2137         fcnt = i40e_update_filter_state(num_add, list, add_head);
2138
2139         if (fcnt != num_add) {
2140                 if (vsi->type == I40E_VSI_MAIN) {
2141                         set_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);
2142                         dev_warn(&vsi->back->pdev->dev,
2143                                  "Error %s adding RX filters on %s, promiscuous mode forced on\n",
2144                                  i40e_aq_str(hw, aq_err), vsi_name);
2145                 } else if (vsi->type == I40E_VSI_SRIOV ||
2146                            vsi->type == I40E_VSI_VMDQ1 ||
2147                            vsi->type == I40E_VSI_VMDQ2) {
2148                         dev_warn(&vsi->back->pdev->dev,
2149                                  "Error %s adding RX filters on %s, please set promiscuous on manually for %s\n",
2150                                  i40e_aq_str(hw, aq_err), vsi_name, vsi_name);
2151                 } else {
2152                         dev_warn(&vsi->back->pdev->dev,
2153                                  "Error %s adding RX filters on %s, incorrect VSI type: %i.\n",
2154                                  i40e_aq_str(hw, aq_err), vsi_name, vsi->type);
2155                 }
2156         }
2157 }
2158
2159 /**
2160  * i40e_aqc_broadcast_filter - Set promiscuous broadcast flags
2161  * @vsi: pointer to the VSI
2162  * @vsi_name: the VSI name
2163  * @f: filter data
2164  *
2165  * This function sets or clears the promiscuous broadcast flags for VLAN
2166  * filters in order to properly receive broadcast frames. Assumes that only
2167  * broadcast filters are passed.
2168  *
2169  * Returns status indicating success or failure;
2170  **/
2171 static i40e_status
2172 i40e_aqc_broadcast_filter(struct i40e_vsi *vsi, const char *vsi_name,
2173                           struct i40e_mac_filter *f)
2174 {
2175         bool enable = f->state == I40E_FILTER_NEW;
2176         struct i40e_hw *hw = &vsi->back->hw;
2177         i40e_status aq_ret;
2178
2179         if (f->vlan == I40E_VLAN_ANY) {
2180                 aq_ret = i40e_aq_set_vsi_broadcast(hw,
2181                                                    vsi->seid,
2182                                                    enable,
2183                                                    NULL);
2184         } else {
2185                 aq_ret = i40e_aq_set_vsi_bc_promisc_on_vlan(hw,
2186                                                             vsi->seid,
2187                                                             enable,
2188                                                             f->vlan,
2189                                                             NULL);
2190         }
2191
2192         if (aq_ret) {
2193                 set_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);
2194                 dev_warn(&vsi->back->pdev->dev,
2195                          "Error %s, forcing overflow promiscuous on %s\n",
2196                          i40e_aq_str(hw, hw->aq.asq_last_status),
2197                          vsi_name);
2198         }
2199
2200         return aq_ret;
2201 }
2202
2203 /**
2204  * i40e_set_promiscuous - set promiscuous mode
2205  * @pf: board private structure
2206  * @promisc: promisc on or off
2207  *
2208  * There are different ways of setting promiscuous mode on a PF depending on
2209  * what state/environment we're in.  This identifies and sets it appropriately.
2210  * Returns 0 on success.
2211  **/
2212 static int i40e_set_promiscuous(struct i40e_pf *pf, bool promisc)
2213 {
2214         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
2215         struct i40e_hw *hw = &pf->hw;
2216         i40e_status aq_ret;
2217
2218         if (vsi->type == I40E_VSI_MAIN &&
2219             pf->lan_veb != I40E_NO_VEB &&
2220             !(pf->flags & I40E_FLAG_MFP_ENABLED)) {
2221                 /* set defport ON for Main VSI instead of true promisc
2222                  * this way we will get all unicast/multicast and VLAN
2223                  * promisc behavior but will not get VF or VMDq traffic
2224                  * replicated on the Main VSI.
2225                  */
2226                 if (promisc)
2227                         aq_ret = i40e_aq_set_default_vsi(hw,
2228                                                          vsi->seid,
2229                                                          NULL);
2230                 else
2231                         aq_ret = i40e_aq_clear_default_vsi(hw,
2232                                                            vsi->seid,
2233                                                            NULL);
2234                 if (aq_ret) {
2235                         dev_info(&pf->pdev->dev,
2236                                  "Set default VSI failed, err %s, aq_err %s\n",
2237                                  i40e_stat_str(hw, aq_ret),
2238                                  i40e_aq_str(hw, hw->aq.asq_last_status));
2239                 }
2240         } else {
2241                 aq_ret = i40e_aq_set_vsi_unicast_promiscuous(
2242                                                   hw,
2243                                                   vsi->seid,
2244                                                   promisc, NULL,
2245                                                   true);
2246                 if (aq_ret) {
2247                         dev_info(&pf->pdev->dev,
2248                                  "set unicast promisc failed, err %s, aq_err %s\n",
2249                                  i40e_stat_str(hw, aq_ret),
2250                                  i40e_aq_str(hw, hw->aq.asq_last_status));
2251                 }
2252                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(
2253                                                   hw,
2254                                                   vsi->seid,
2255                                                   promisc, NULL);
2256                 if (aq_ret) {
2257                         dev_info(&pf->pdev->dev,
2258                                  "set multicast promisc failed, err %s, aq_err %s\n",
2259                                  i40e_stat_str(hw, aq_ret),
2260                                  i40e_aq_str(hw, hw->aq.asq_last_status));
2261                 }
2262         }
2263
2264         if (!aq_ret)
2265                 pf->cur_promisc = promisc;
2266
2267         return aq_ret;
2268 }
2269
2270 /**
2271  * i40e_sync_vsi_filters - Update the VSI filter list to the HW
2272  * @vsi: ptr to the VSI
2273  *
2274  * Push any outstanding VSI filter changes through the AdminQ.
2275  *
2276  * Returns 0 or error value
2277  **/
2278 int i40e_sync_vsi_filters(struct i40e_vsi *vsi)
2279 {
2280         struct hlist_head tmp_add_list, tmp_del_list;
2281         struct i40e_mac_filter *f;
2282         struct i40e_new_mac_filter *new, *add_head = NULL;
2283         struct i40e_hw *hw = &vsi->back->hw;
2284         bool old_overflow, new_overflow;
2285         unsigned int failed_filters = 0;
2286         unsigned int vlan_filters = 0;
2287         char vsi_name[16] = "PF";
2288         int filter_list_len = 0;
2289         i40e_status aq_ret = 0;
2290         u32 changed_flags = 0;
2291         struct hlist_node *h;
2292         struct i40e_pf *pf;
2293         int num_add = 0;
2294         int num_del = 0;
2295         int retval = 0;
2296         u16 cmd_flags;
2297         int list_size;
2298         int bkt;
2299
2300         /* empty array typed pointers, kcalloc later */
2301         struct i40e_aqc_add_macvlan_element_data *add_list;
2302         struct i40e_aqc_remove_macvlan_element_data *del_list;
2303
2304         while (test_and_set_bit(__I40E_VSI_SYNCING_FILTERS, vsi->state))
2305                 usleep_range(1000, 2000);
2306         pf = vsi->back;
2307
2308         old_overflow = test_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);
2309
2310         if (vsi->netdev) {
2311                 changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags;
2312                 vsi->current_netdev_flags = vsi->netdev->flags;
2313         }
2314
2315         INIT_HLIST_HEAD(&tmp_add_list);
2316         INIT_HLIST_HEAD(&tmp_del_list);
2317
2318         if (vsi->type == I40E_VSI_SRIOV)
2319                 snprintf(vsi_name, sizeof(vsi_name) - 1, "VF %d", vsi->vf_id);
2320         else if (vsi->type != I40E_VSI_MAIN)
2321                 snprintf(vsi_name, sizeof(vsi_name) - 1, "vsi %d", vsi->seid);
2322
2323         if (vsi->flags & I40E_VSI_FLAG_FILTER_CHANGED) {
2324                 vsi->flags &= ~I40E_VSI_FLAG_FILTER_CHANGED;
2325
2326                 spin_lock_bh(&vsi->mac_filter_hash_lock);
2327                 /* Create a list of filters to delete. */
2328                 hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
2329                         if (f->state == I40E_FILTER_REMOVE) {
2330                                 /* Move the element into temporary del_list */
2331                                 hash_del(&f->hlist);
2332                                 hlist_add_head(&f->hlist, &tmp_del_list);
2333
2334                                 /* Avoid counting removed filters */
2335                                 continue;
2336                         }
2337                         if (f->state == I40E_FILTER_NEW) {
2338                                 /* Create a temporary i40e_new_mac_filter */
2339                                 new = kzalloc(sizeof(*new), GFP_ATOMIC);
2340                                 if (!new)
2341                                         goto err_no_memory_locked;
2342
2343                                 /* Store pointer to the real filter */
2344                                 new->f = f;
2345                                 new->state = f->state;
2346
2347                                 /* Add it to the hash list */
2348                                 hlist_add_head(&new->hlist, &tmp_add_list);
2349                         }
2350
2351                         /* Count the number of active (current and new) VLAN
2352                          * filters we have now. Does not count filters which
2353                          * are marked for deletion.
2354                          */
2355                         if (f->vlan > 0)
2356                                 vlan_filters++;
2357                 }
2358
2359                 retval = i40e_correct_mac_vlan_filters(vsi,
2360                                                        &tmp_add_list,
2361                                                        &tmp_del_list,
2362                                                        vlan_filters);
2363                 if (retval)
2364                         goto err_no_memory_locked;
2365
2366                 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2367         }
2368
2369         /* Now process 'del_list' outside the lock */
2370         if (!hlist_empty(&tmp_del_list)) {
2371                 filter_list_len = hw->aq.asq_buf_size /
2372                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
2373                 list_size = filter_list_len *
2374                             sizeof(struct i40e_aqc_remove_macvlan_element_data);
2375                 del_list = kzalloc(list_size, GFP_ATOMIC);
2376                 if (!del_list)
2377                         goto err_no_memory;
2378
2379                 hlist_for_each_entry_safe(f, h, &tmp_del_list, hlist) {
2380                         cmd_flags = 0;
2381
2382                         /* handle broadcast filters by updating the broadcast
2383                          * promiscuous flag and release filter list.
2384                          */
2385                         if (is_broadcast_ether_addr(f->macaddr)) {
2386                                 i40e_aqc_broadcast_filter(vsi, vsi_name, f);
2387
2388                                 hlist_del(&f->hlist);
2389                                 kfree(f);
2390                                 continue;
2391                         }
2392
2393                         /* add to delete list */
2394                         ether_addr_copy(del_list[num_del].mac_addr, f->macaddr);
2395                         if (f->vlan == I40E_VLAN_ANY) {
2396                                 del_list[num_del].vlan_tag = 0;
2397                                 cmd_flags |= I40E_AQC_MACVLAN_DEL_IGNORE_VLAN;
2398                         } else {
2399                                 del_list[num_del].vlan_tag =
2400                                         cpu_to_le16((u16)(f->vlan));
2401                         }
2402
2403                         cmd_flags |= I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
2404                         del_list[num_del].flags = cmd_flags;
2405                         num_del++;
2406
2407                         /* flush a full buffer */
2408                         if (num_del == filter_list_len) {
2409                                 i40e_aqc_del_filters(vsi, vsi_name, del_list,
2410                                                      num_del, &retval);
2411                                 memset(del_list, 0, list_size);
2412                                 num_del = 0;
2413                         }
2414                         /* Release memory for MAC filter entries which were
2415                          * synced up with HW.
2416                          */
2417                         hlist_del(&f->hlist);
2418                         kfree(f);
2419                 }
2420
2421                 if (num_del) {
2422                         i40e_aqc_del_filters(vsi, vsi_name, del_list,
2423                                              num_del, &retval);
2424                 }
2425
2426                 kfree(del_list);
2427                 del_list = NULL;
2428         }
2429
2430         if (!hlist_empty(&tmp_add_list)) {
2431                 /* Do all the adds now. */
2432                 filter_list_len = hw->aq.asq_buf_size /
2433                                sizeof(struct i40e_aqc_add_macvlan_element_data);
2434                 list_size = filter_list_len *
2435                                sizeof(struct i40e_aqc_add_macvlan_element_data);
2436                 add_list = kzalloc(list_size, GFP_ATOMIC);
2437                 if (!add_list)
2438                         goto err_no_memory;
2439
2440                 num_add = 0;
2441                 hlist_for_each_entry_safe(new, h, &tmp_add_list, hlist) {
2442                         /* handle broadcast filters by updating the broadcast
2443                          * promiscuous flag instead of adding a MAC filter.
2444                          */
2445                         if (is_broadcast_ether_addr(new->f->macaddr)) {
2446                                 if (i40e_aqc_broadcast_filter(vsi, vsi_name,
2447                                                               new->f))
2448                                         new->state = I40E_FILTER_FAILED;
2449                                 else
2450                                         new->state = I40E_FILTER_ACTIVE;
2451                                 continue;
2452                         }
2453
2454                         /* add to add array */
2455                         if (num_add == 0)
2456                                 add_head = new;
2457                         cmd_flags = 0;
2458                         ether_addr_copy(add_list[num_add].mac_addr,
2459                                         new->f->macaddr);
2460                         if (new->f->vlan == I40E_VLAN_ANY) {
2461                                 add_list[num_add].vlan_tag = 0;
2462                                 cmd_flags |= I40E_AQC_MACVLAN_ADD_IGNORE_VLAN;
2463                         } else {
2464                                 add_list[num_add].vlan_tag =
2465                                         cpu_to_le16((u16)(new->f->vlan));
2466                         }
2467                         add_list[num_add].queue_number = 0;
2468                         /* set invalid match method for later detection */
2469                         add_list[num_add].match_method = I40E_AQC_MM_ERR_NO_RES;
2470                         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
2471                         add_list[num_add].flags = cpu_to_le16(cmd_flags);
2472                         num_add++;
2473
2474                         /* flush a full buffer */
2475                         if (num_add == filter_list_len) {
2476                                 i40e_aqc_add_filters(vsi, vsi_name, add_list,
2477                                                      add_head, num_add);
2478                                 memset(add_list, 0, list_size);
2479                                 num_add = 0;
2480                         }
2481                 }
2482                 if (num_add) {
2483                         i40e_aqc_add_filters(vsi, vsi_name, add_list, add_head,
2484                                              num_add);
2485                 }
2486                 /* Now move all of the filters from the temp add list back to
2487                  * the VSI's list.
2488                  */
2489                 spin_lock_bh(&vsi->mac_filter_hash_lock);
2490                 hlist_for_each_entry_safe(new, h, &tmp_add_list, hlist) {
2491                         /* Only update the state if we're still NEW */
2492                         if (new->f->state == I40E_FILTER_NEW)
2493                                 new->f->state = new->state;
2494                         hlist_del(&new->hlist);
2495                         kfree(new);
2496                 }
2497                 spin_unlock_bh(&vsi->mac_filter_hash_lock);
2498                 kfree(add_list);
2499                 add_list = NULL;
2500         }
2501
2502         /* Determine the number of active and failed filters. */
2503         spin_lock_bh(&vsi->mac_filter_hash_lock);
2504         vsi->active_filters = 0;
2505         hash_for_each(vsi->mac_filter_hash, bkt, f, hlist) {
2506                 if (f->state == I40E_FILTER_ACTIVE)
2507                         vsi->active_filters++;
2508                 else if (f->state == I40E_FILTER_FAILED)
2509                         failed_filters++;
2510         }
2511         spin_unlock_bh(&vsi->mac_filter_hash_lock);
2512
2513         /* Check if we are able to exit overflow promiscuous mode. We can
2514          * safely exit if we didn't just enter, we no longer have any failed
2515          * filters, and we have reduced filters below the threshold value.
2516          */
2517         if (old_overflow && !failed_filters &&
2518             vsi->active_filters < vsi->promisc_threshold) {
2519                 dev_info(&pf->pdev->dev,
2520                          "filter logjam cleared on %s, leaving overflow promiscuous mode\n",
2521                          vsi_name);
2522                 clear_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);
2523                 vsi->promisc_threshold = 0;
2524         }
2525
2526         /* if the VF is not trusted do not do promisc */
2527         if ((vsi->type == I40E_VSI_SRIOV) && !pf->vf[vsi->vf_id].trusted) {
2528                 clear_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);
2529                 goto out;
2530         }
2531
2532         new_overflow = test_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);
2533
2534         /* If we are entering overflow promiscuous, we need to calculate a new
2535          * threshold for when we are safe to exit
2536          */
2537         if (!old_overflow && new_overflow)
2538                 vsi->promisc_threshold = (vsi->active_filters * 3) / 4;
2539
2540         /* check for changes in promiscuous modes */
2541         if (changed_flags & IFF_ALLMULTI) {
2542                 bool cur_multipromisc;
2543
2544                 cur_multipromisc = !!(vsi->current_netdev_flags & IFF_ALLMULTI);
2545                 aq_ret = i40e_aq_set_vsi_multicast_promiscuous(&vsi->back->hw,
2546                                                                vsi->seid,
2547                                                                cur_multipromisc,
2548                                                                NULL);
2549                 if (aq_ret) {
2550                         retval = i40e_aq_rc_to_posix(aq_ret,
2551                                                      hw->aq.asq_last_status);
2552                         dev_info(&pf->pdev->dev,
2553                                  "set multi promisc failed on %s, err %s aq_err %s\n",
2554                                  vsi_name,
2555                                  i40e_stat_str(hw, aq_ret),
2556                                  i40e_aq_str(hw, hw->aq.asq_last_status));
2557                 } else {
2558                         dev_info(&pf->pdev->dev, "%s is %s allmulti mode.\n",
2559                                  vsi->netdev->name,
2560                                  cur_multipromisc ? "entering" : "leaving");
2561                 }
2562         }
2563
2564         if ((changed_flags & IFF_PROMISC) || old_overflow != new_overflow) {
2565                 bool cur_promisc;
2566
2567                 cur_promisc = (!!(vsi->current_netdev_flags & IFF_PROMISC) ||
2568                                new_overflow);
2569                 aq_ret = i40e_set_promiscuous(pf, cur_promisc);
2570                 if (aq_ret) {
2571                         retval = i40e_aq_rc_to_posix(aq_ret,
2572                                                      hw->aq.asq_last_status);
2573                         dev_info(&pf->pdev->dev,
2574                                  "Setting promiscuous %s failed on %s, err %s aq_err %s\n",
2575                                  cur_promisc ? "on" : "off",
2576                                  vsi_name,
2577                                  i40e_stat_str(hw, aq_ret),
2578                                  i40e_aq_str(hw, hw->aq.asq_last_status));
2579                 }
2580         }
2581 out:
2582         /* if something went wrong then set the changed flag so we try again */
2583         if (retval)
2584                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
2585
2586         clear_bit(__I40E_VSI_SYNCING_FILTERS, vsi->state);
2587         return retval;
2588
2589 err_no_memory:
2590         /* Restore elements on the temporary add and delete lists */
2591         spin_lock_bh(&vsi->mac_filter_hash_lock);
2592 err_no_memory_locked:
2593         i40e_undo_del_filter_entries(vsi, &tmp_del_list);
2594         i40e_undo_add_filter_entries(vsi, &tmp_add_list);
2595         spin_unlock_bh(&vsi->mac_filter_hash_lock);
2596
2597         vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
2598         clear_bit(__I40E_VSI_SYNCING_FILTERS, vsi->state);
2599         return -ENOMEM;
2600 }
2601
2602 /**
2603  * i40e_sync_filters_subtask - Sync the VSI filter list with HW
2604  * @pf: board private structure
2605  **/
2606 static void i40e_sync_filters_subtask(struct i40e_pf *pf)
2607 {
2608         int v;
2609
2610         if (!pf)
2611                 return;
2612         if (!test_and_clear_bit(__I40E_MACVLAN_SYNC_PENDING, pf->state))
2613                 return;
2614         if (test_and_set_bit(__I40E_VF_DISABLE, pf->state)) {
2615                 set_bit(__I40E_MACVLAN_SYNC_PENDING, pf->state);
2616                 return;
2617         }
2618
2619         for (v = 0; v < pf->num_alloc_vsi; v++) {
2620                 if (pf->vsi[v] &&
2621                     (pf->vsi[v]->flags & I40E_VSI_FLAG_FILTER_CHANGED)) {
2622                         int ret = i40e_sync_vsi_filters(pf->vsi[v]);
2623
2624                         if (ret) {
2625                                 /* come back and try again later */
2626                                 set_bit(__I40E_MACVLAN_SYNC_PENDING,
2627                                         pf->state);
2628                                 break;
2629                         }
2630                 }
2631         }
2632         clear_bit(__I40E_VF_DISABLE, pf->state);
2633 }
2634
2635 /**
2636  * i40e_max_xdp_frame_size - returns the maximum allowed frame size for XDP
2637  * @vsi: the vsi
2638  **/
2639 static int i40e_max_xdp_frame_size(struct i40e_vsi *vsi)
2640 {
2641         if (PAGE_SIZE >= 8192 || (vsi->back->flags & I40E_FLAG_LEGACY_RX))
2642                 return I40E_RXBUFFER_2048;
2643         else
2644                 return I40E_RXBUFFER_3072;
2645 }
2646
2647 /**
2648  * i40e_change_mtu - NDO callback to change the Maximum Transfer Unit
2649  * @netdev: network interface device structure
2650  * @new_mtu: new value for maximum frame size
2651  *
2652  * Returns 0 on success, negative on failure
2653  **/
2654 static int i40e_change_mtu(struct net_device *netdev, int new_mtu)
2655 {
2656         struct i40e_netdev_priv *np = netdev_priv(netdev);
2657         struct i40e_vsi *vsi = np->vsi;
2658         struct i40e_pf *pf = vsi->back;
2659
2660         if (i40e_enabled_xdp_vsi(vsi)) {
2661                 int frame_size = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
2662
2663                 if (frame_size > i40e_max_xdp_frame_size(vsi))
2664                         return -EINVAL;
2665         }
2666
2667         netdev_dbg(netdev, "changing MTU from %d to %d\n",
2668                    netdev->mtu, new_mtu);
2669         netdev->mtu = new_mtu;
2670         if (netif_running(netdev))
2671                 i40e_vsi_reinit_locked(vsi);
2672         set_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state);
2673         set_bit(__I40E_CLIENT_L2_CHANGE, pf->state);
2674         return 0;
2675 }
2676
2677 /**
2678  * i40e_ioctl - Access the hwtstamp interface
2679  * @netdev: network interface device structure
2680  * @ifr: interface request data
2681  * @cmd: ioctl command
2682  **/
2683 int i40e_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2684 {
2685         struct i40e_netdev_priv *np = netdev_priv(netdev);
2686         struct i40e_pf *pf = np->vsi->back;
2687
2688         switch (cmd) {
2689         case SIOCGHWTSTAMP:
2690                 return i40e_ptp_get_ts_config(pf, ifr);
2691         case SIOCSHWTSTAMP:
2692                 return i40e_ptp_set_ts_config(pf, ifr);
2693         default:
2694                 return -EOPNOTSUPP;
2695         }
2696 }
2697
2698 /**
2699  * i40e_vlan_stripping_enable - Turn on vlan stripping for the VSI
2700  * @vsi: the vsi being adjusted
2701  **/
2702 void i40e_vlan_stripping_enable(struct i40e_vsi *vsi)
2703 {
2704         struct i40e_vsi_context ctxt;
2705         i40e_status ret;
2706
2707         /* Don't modify stripping options if a port VLAN is active */
2708         if (vsi->info.pvid)
2709                 return;
2710
2711         if ((vsi->info.valid_sections &
2712              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2713             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_MODE_MASK) == 0))
2714                 return;  /* already enabled */
2715
2716         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2717         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2718                                     I40E_AQ_VSI_PVLAN_EMOD_STR_BOTH;
2719
2720         ctxt.seid = vsi->seid;
2721         ctxt.info = vsi->info;
2722         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2723         if (ret) {
2724                 dev_info(&vsi->back->pdev->dev,
2725                          "update vlan stripping failed, err %s aq_err %s\n",
2726                          i40e_stat_str(&vsi->back->hw, ret),
2727                          i40e_aq_str(&vsi->back->hw,
2728                                      vsi->back->hw.aq.asq_last_status));
2729         }
2730 }
2731
2732 /**
2733  * i40e_vlan_stripping_disable - Turn off vlan stripping for the VSI
2734  * @vsi: the vsi being adjusted
2735  **/
2736 void i40e_vlan_stripping_disable(struct i40e_vsi *vsi)
2737 {
2738         struct i40e_vsi_context ctxt;
2739         i40e_status ret;
2740
2741         /* Don't modify stripping options if a port VLAN is active */
2742         if (vsi->info.pvid)
2743                 return;
2744
2745         if ((vsi->info.valid_sections &
2746              cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID)) &&
2747             ((vsi->info.port_vlan_flags & I40E_AQ_VSI_PVLAN_EMOD_MASK) ==
2748              I40E_AQ_VSI_PVLAN_EMOD_MASK))
2749                 return;  /* already disabled */
2750
2751         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2752         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_ALL |
2753                                     I40E_AQ_VSI_PVLAN_EMOD_NOTHING;
2754
2755         ctxt.seid = vsi->seid;
2756         ctxt.info = vsi->info;
2757         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2758         if (ret) {
2759                 dev_info(&vsi->back->pdev->dev,
2760                          "update vlan stripping failed, err %s aq_err %s\n",
2761                          i40e_stat_str(&vsi->back->hw, ret),
2762                          i40e_aq_str(&vsi->back->hw,
2763                                      vsi->back->hw.aq.asq_last_status));
2764         }
2765 }
2766
2767 /**
2768  * i40e_add_vlan_all_mac - Add a MAC/VLAN filter for each existing MAC address
2769  * @vsi: the vsi being configured
2770  * @vid: vlan id to be added (0 = untagged only , -1 = any)
2771  *
2772  * This is a helper function for adding a new MAC/VLAN filter with the
2773  * specified VLAN for each existing MAC address already in the hash table.
2774  * This function does *not* perform any accounting to update filters based on
2775  * VLAN mode.
2776  *
2777  * NOTE: this function expects to be called while under the
2778  * mac_filter_hash_lock
2779  **/
2780 int i40e_add_vlan_all_mac(struct i40e_vsi *vsi, s16 vid)
2781 {
2782         struct i40e_mac_filter *f, *add_f;
2783         struct hlist_node *h;
2784         int bkt;
2785
2786         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
2787                 if (f->state == I40E_FILTER_REMOVE)
2788                         continue;
2789                 add_f = i40e_add_filter(vsi, f->macaddr, vid);
2790                 if (!add_f) {
2791                         dev_info(&vsi->back->pdev->dev,
2792                                  "Could not add vlan filter %d for %pM\n",
2793                                  vid, f->macaddr);
2794                         return -ENOMEM;
2795                 }
2796         }
2797
2798         return 0;
2799 }
2800
2801 /**
2802  * i40e_vsi_add_vlan - Add VSI membership for given VLAN
2803  * @vsi: the VSI being configured
2804  * @vid: VLAN id to be added
2805  **/
2806 int i40e_vsi_add_vlan(struct i40e_vsi *vsi, u16 vid)
2807 {
2808         int err;
2809
2810         if (vsi->info.pvid)
2811                 return -EINVAL;
2812
2813         /* The network stack will attempt to add VID=0, with the intention to
2814          * receive priority tagged packets with a VLAN of 0. Our HW receives
2815          * these packets by default when configured to receive untagged
2816          * packets, so we don't need to add a filter for this case.
2817          * Additionally, HW interprets adding a VID=0 filter as meaning to
2818          * receive *only* tagged traffic and stops receiving untagged traffic.
2819          * Thus, we do not want to actually add a filter for VID=0
2820          */
2821         if (!vid)
2822                 return 0;
2823
2824         /* Locked once because all functions invoked below iterates list*/
2825         spin_lock_bh(&vsi->mac_filter_hash_lock);
2826         err = i40e_add_vlan_all_mac(vsi, vid);
2827         spin_unlock_bh(&vsi->mac_filter_hash_lock);
2828         if (err)
2829                 return err;
2830
2831         /* schedule our worker thread which will take care of
2832          * applying the new filter changes
2833          */
2834         i40e_service_event_schedule(vsi->back);
2835         return 0;
2836 }
2837
2838 /**
2839  * i40e_rm_vlan_all_mac - Remove MAC/VLAN pair for all MAC with the given VLAN
2840  * @vsi: the vsi being configured
2841  * @vid: vlan id to be removed (0 = untagged only , -1 = any)
2842  *
2843  * This function should be used to remove all VLAN filters which match the
2844  * given VID. It does not schedule the service event and does not take the
2845  * mac_filter_hash_lock so it may be combined with other operations under
2846  * a single invocation of the mac_filter_hash_lock.
2847  *
2848  * NOTE: this function expects to be called while under the
2849  * mac_filter_hash_lock
2850  */
2851 void i40e_rm_vlan_all_mac(struct i40e_vsi *vsi, s16 vid)
2852 {
2853         struct i40e_mac_filter *f;
2854         struct hlist_node *h;
2855         int bkt;
2856
2857         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
2858                 if (f->vlan == vid)
2859                         __i40e_del_filter(vsi, f);
2860         }
2861 }
2862
2863 /**
2864  * i40e_vsi_kill_vlan - Remove VSI membership for given VLAN
2865  * @vsi: the VSI being configured
2866  * @vid: VLAN id to be removed
2867  **/
2868 void i40e_vsi_kill_vlan(struct i40e_vsi *vsi, u16 vid)
2869 {
2870         if (!vid || vsi->info.pvid)
2871                 return;
2872
2873         spin_lock_bh(&vsi->mac_filter_hash_lock);
2874         i40e_rm_vlan_all_mac(vsi, vid);
2875         spin_unlock_bh(&vsi->mac_filter_hash_lock);
2876
2877         /* schedule our worker thread which will take care of
2878          * applying the new filter changes
2879          */
2880         i40e_service_event_schedule(vsi->back);
2881 }
2882
2883 /**
2884  * i40e_vlan_rx_add_vid - Add a vlan id filter to HW offload
2885  * @netdev: network interface to be adjusted
2886  * @proto: unused protocol value
2887  * @vid: vlan id to be added
2888  *
2889  * net_device_ops implementation for adding vlan ids
2890  **/
2891 static int i40e_vlan_rx_add_vid(struct net_device *netdev,
2892                                 __always_unused __be16 proto, u16 vid)
2893 {
2894         struct i40e_netdev_priv *np = netdev_priv(netdev);
2895         struct i40e_vsi *vsi = np->vsi;
2896         int ret = 0;
2897
2898         if (vid >= VLAN_N_VID)
2899                 return -EINVAL;
2900
2901         ret = i40e_vsi_add_vlan(vsi, vid);
2902         if (!ret)
2903                 set_bit(vid, vsi->active_vlans);
2904
2905         return ret;
2906 }
2907
2908 /**
2909  * i40e_vlan_rx_add_vid_up - Add a vlan id filter to HW offload in UP path
2910  * @netdev: network interface to be adjusted
2911  * @proto: unused protocol value
2912  * @vid: vlan id to be added
2913  **/
2914 static void i40e_vlan_rx_add_vid_up(struct net_device *netdev,
2915                                     __always_unused __be16 proto, u16 vid)
2916 {
2917         struct i40e_netdev_priv *np = netdev_priv(netdev);
2918         struct i40e_vsi *vsi = np->vsi;
2919
2920         if (vid >= VLAN_N_VID)
2921                 return;
2922         set_bit(vid, vsi->active_vlans);
2923 }
2924
2925 /**
2926  * i40e_vlan_rx_kill_vid - Remove a vlan id filter from HW offload
2927  * @netdev: network interface to be adjusted
2928  * @proto: unused protocol value
2929  * @vid: vlan id to be removed
2930  *
2931  * net_device_ops implementation for removing vlan ids
2932  **/
2933 static int i40e_vlan_rx_kill_vid(struct net_device *netdev,
2934                                  __always_unused __be16 proto, u16 vid)
2935 {
2936         struct i40e_netdev_priv *np = netdev_priv(netdev);
2937         struct i40e_vsi *vsi = np->vsi;
2938
2939         /* return code is ignored as there is nothing a user
2940          * can do about failure to remove and a log message was
2941          * already printed from the other function
2942          */
2943         i40e_vsi_kill_vlan(vsi, vid);
2944
2945         clear_bit(vid, vsi->active_vlans);
2946
2947         return 0;
2948 }
2949
2950 /**
2951  * i40e_restore_vlan - Reinstate vlans when vsi/netdev comes back up
2952  * @vsi: the vsi being brought back up
2953  **/
2954 static void i40e_restore_vlan(struct i40e_vsi *vsi)
2955 {
2956         u16 vid;
2957
2958         if (!vsi->netdev)
2959                 return;
2960
2961         if (vsi->netdev->features & NETIF_F_HW_VLAN_CTAG_RX)
2962                 i40e_vlan_stripping_enable(vsi);
2963         else
2964                 i40e_vlan_stripping_disable(vsi);
2965
2966         for_each_set_bit(vid, vsi->active_vlans, VLAN_N_VID)
2967                 i40e_vlan_rx_add_vid_up(vsi->netdev, htons(ETH_P_8021Q),
2968                                         vid);
2969 }
2970
2971 /**
2972  * i40e_vsi_add_pvid - Add pvid for the VSI
2973  * @vsi: the vsi being adjusted
2974  * @vid: the vlan id to set as a PVID
2975  **/
2976 int i40e_vsi_add_pvid(struct i40e_vsi *vsi, u16 vid)
2977 {
2978         struct i40e_vsi_context ctxt;
2979         i40e_status ret;
2980
2981         vsi->info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
2982         vsi->info.pvid = cpu_to_le16(vid);
2983         vsi->info.port_vlan_flags = I40E_AQ_VSI_PVLAN_MODE_TAGGED |
2984                                     I40E_AQ_VSI_PVLAN_INSERT_PVID |
2985                                     I40E_AQ_VSI_PVLAN_EMOD_STR;
2986
2987         ctxt.seid = vsi->seid;
2988         ctxt.info = vsi->info;
2989         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
2990         if (ret) {
2991                 dev_info(&vsi->back->pdev->dev,
2992                          "add pvid failed, err %s aq_err %s\n",
2993                          i40e_stat_str(&vsi->back->hw, ret),
2994                          i40e_aq_str(&vsi->back->hw,
2995                                      vsi->back->hw.aq.asq_last_status));
2996                 return -ENOENT;
2997         }
2998
2999         return 0;
3000 }
3001
3002 /**
3003  * i40e_vsi_remove_pvid - Remove the pvid from the VSI
3004  * @vsi: the vsi being adjusted
3005  *
3006  * Just use the vlan_rx_register() service to put it back to normal
3007  **/
3008 void i40e_vsi_remove_pvid(struct i40e_vsi *vsi)
3009 {
3010         vsi->info.pvid = 0;
3011
3012         i40e_vlan_stripping_disable(vsi);
3013 }
3014
3015 /**
3016  * i40e_vsi_setup_tx_resources - Allocate VSI Tx queue resources
3017  * @vsi: ptr to the VSI
3018  *
3019  * If this function returns with an error, then it's possible one or
3020  * more of the rings is populated (while the rest are not).  It is the
3021  * callers duty to clean those orphaned rings.
3022  *
3023  * Return 0 on success, negative on failure
3024  **/
3025 static int i40e_vsi_setup_tx_resources(struct i40e_vsi *vsi)
3026 {
3027         int i, err = 0;
3028
3029         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
3030                 err = i40e_setup_tx_descriptors(vsi->tx_rings[i]);
3031
3032         if (!i40e_enabled_xdp_vsi(vsi))
3033                 return err;
3034
3035         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
3036                 err = i40e_setup_tx_descriptors(vsi->xdp_rings[i]);
3037
3038         return err;
3039 }
3040
3041 /**
3042  * i40e_vsi_free_tx_resources - Free Tx resources for VSI queues
3043  * @vsi: ptr to the VSI
3044  *
3045  * Free VSI's transmit software resources
3046  **/
3047 static void i40e_vsi_free_tx_resources(struct i40e_vsi *vsi)
3048 {
3049         int i;
3050
3051         if (vsi->tx_rings) {
3052                 for (i = 0; i < vsi->num_queue_pairs; i++)
3053                         if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc)
3054                                 i40e_free_tx_resources(vsi->tx_rings[i]);
3055         }
3056
3057         if (vsi->xdp_rings) {
3058                 for (i = 0; i < vsi->num_queue_pairs; i++)
3059                         if (vsi->xdp_rings[i] && vsi->xdp_rings[i]->desc)
3060                                 i40e_free_tx_resources(vsi->xdp_rings[i]);
3061         }
3062 }
3063
3064 /**
3065  * i40e_vsi_setup_rx_resources - Allocate VSI queues Rx resources
3066  * @vsi: ptr to the VSI
3067  *
3068  * If this function returns with an error, then it's possible one or
3069  * more of the rings is populated (while the rest are not).  It is the
3070  * callers duty to clean those orphaned rings.
3071  *
3072  * Return 0 on success, negative on failure
3073  **/
3074 static int i40e_vsi_setup_rx_resources(struct i40e_vsi *vsi)
3075 {
3076         int i, err = 0;
3077
3078         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
3079                 err = i40e_setup_rx_descriptors(vsi->rx_rings[i]);
3080         return err;
3081 }
3082
3083 /**
3084  * i40e_vsi_free_rx_resources - Free Rx Resources for VSI queues
3085  * @vsi: ptr to the VSI
3086  *
3087  * Free all receive software resources
3088  **/
3089 static void i40e_vsi_free_rx_resources(struct i40e_vsi *vsi)
3090 {
3091         int i;
3092
3093         if (!vsi->rx_rings)
3094                 return;
3095
3096         for (i = 0; i < vsi->num_queue_pairs; i++)
3097                 if (vsi->rx_rings[i] && vsi->rx_rings[i]->desc)
3098                         i40e_free_rx_resources(vsi->rx_rings[i]);
3099 }
3100
3101 /**
3102  * i40e_config_xps_tx_ring - Configure XPS for a Tx ring
3103  * @ring: The Tx ring to configure
3104  *
3105  * This enables/disables XPS for a given Tx descriptor ring
3106  * based on the TCs enabled for the VSI that ring belongs to.
3107  **/
3108 static void i40e_config_xps_tx_ring(struct i40e_ring *ring)
3109 {
3110         int cpu;
3111
3112         if (!ring->q_vector || !ring->netdev || ring->ch)
3113                 return;
3114
3115         /* We only initialize XPS once, so as not to overwrite user settings */
3116         if (test_and_set_bit(__I40E_TX_XPS_INIT_DONE, ring->state))
3117                 return;
3118
3119         cpu = cpumask_local_spread(ring->q_vector->v_idx, -1);
3120         netif_set_xps_queue(ring->netdev, get_cpu_mask(cpu),
3121                             ring->queue_index);
3122 }
3123
3124 /**
3125  * i40e_xsk_pool - Retrieve the AF_XDP buffer pool if XDP and ZC is enabled
3126  * @ring: The Tx or Rx ring
3127  *
3128  * Returns the AF_XDP buffer pool or NULL.
3129  **/
3130 static struct xsk_buff_pool *i40e_xsk_pool(struct i40e_ring *ring)
3131 {
3132         bool xdp_on = i40e_enabled_xdp_vsi(ring->vsi);
3133         int qid = ring->queue_index;
3134
3135         if (ring_is_xdp(ring))
3136                 qid -= ring->vsi->alloc_queue_pairs;
3137
3138         if (!xdp_on || !test_bit(qid, ring->vsi->af_xdp_zc_qps))
3139                 return NULL;
3140
3141         return xsk_get_pool_from_qid(ring->vsi->netdev, qid);
3142 }
3143
3144 /**
3145  * i40e_configure_tx_ring - Configure a transmit ring context and rest
3146  * @ring: The Tx ring to configure
3147  *
3148  * Configure the Tx descriptor ring in the HMC context.
3149  **/
3150 static int i40e_configure_tx_ring(struct i40e_ring *ring)
3151 {
3152         struct i40e_vsi *vsi = ring->vsi;
3153         u16 pf_q = vsi->base_queue + ring->queue_index;
3154         struct i40e_hw *hw = &vsi->back->hw;
3155         struct i40e_hmc_obj_txq tx_ctx;
3156         i40e_status err = 0;
3157         u32 qtx_ctl = 0;
3158
3159         if (ring_is_xdp(ring))
3160                 ring->xsk_pool = i40e_xsk_pool(ring);
3161
3162         /* some ATR related tx ring init */
3163         if (vsi->back->flags & I40E_FLAG_FD_ATR_ENABLED) {
3164                 ring->atr_sample_rate = vsi->back->atr_sample_rate;
3165                 ring->atr_count = 0;
3166         } else {
3167                 ring->atr_sample_rate = 0;
3168         }
3169
3170         /* configure XPS */
3171         i40e_config_xps_tx_ring(ring);
3172
3173         /* clear the context structure first */
3174         memset(&tx_ctx, 0, sizeof(tx_ctx));
3175
3176         tx_ctx.new_context = 1;
3177         tx_ctx.base = (ring->dma / 128);
3178         tx_ctx.qlen = ring->count;
3179         tx_ctx.fd_ena = !!(vsi->back->flags & (I40E_FLAG_FD_SB_ENABLED |
3180                                                I40E_FLAG_FD_ATR_ENABLED));
3181         tx_ctx.timesync_ena = !!(vsi->back->flags & I40E_FLAG_PTP);
3182         /* FDIR VSI tx ring can still use RS bit and writebacks */
3183         if (vsi->type != I40E_VSI_FDIR)
3184                 tx_ctx.head_wb_ena = 1;
3185         tx_ctx.head_wb_addr = ring->dma +
3186                               (ring->count * sizeof(struct i40e_tx_desc));
3187
3188         /* As part of VSI creation/update, FW allocates certain
3189          * Tx arbitration queue sets for each TC enabled for
3190          * the VSI. The FW returns the handles to these queue
3191          * sets as part of the response buffer to Add VSI,
3192          * Update VSI, etc. AQ commands. It is expected that
3193          * these queue set handles be associated with the Tx
3194          * queues by the driver as part of the TX queue context
3195          * initialization. This has to be done regardless of
3196          * DCB as by default everything is mapped to TC0.
3197          */
3198
3199         if (ring->ch)
3200                 tx_ctx.rdylist =
3201                         le16_to_cpu(ring->ch->info.qs_handle[ring->dcb_tc]);
3202
3203         else
3204                 tx_ctx.rdylist = le16_to_cpu(vsi->info.qs_handle[ring->dcb_tc]);
3205
3206         tx_ctx.rdylist_act = 0;
3207
3208         /* clear the context in the HMC */
3209         err = i40e_clear_lan_tx_queue_context(hw, pf_q);
3210         if (err) {
3211                 dev_info(&vsi->back->pdev->dev,
3212                          "Failed to clear LAN Tx queue context on Tx ring %d (pf_q %d), error: %d\n",
3213                          ring->queue_index, pf_q, err);
3214                 return -ENOMEM;
3215         }
3216
3217         /* set the context in the HMC */
3218         err = i40e_set_lan_tx_queue_context(hw, pf_q, &tx_ctx);
3219         if (err) {
3220                 dev_info(&vsi->back->pdev->dev,
3221                          "Failed to set LAN Tx queue context on Tx ring %d (pf_q %d, error: %d\n",
3222                          ring->queue_index, pf_q, err);
3223                 return -ENOMEM;
3224         }
3225
3226         /* Now associate this queue with this PCI function */
3227         if (ring->ch) {
3228                 if (ring->ch->type == I40E_VSI_VMDQ2)
3229                         qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
3230                 else
3231                         return -EINVAL;
3232
3233                 qtx_ctl |= (ring->ch->vsi_number <<
3234                             I40E_QTX_CTL_VFVM_INDX_SHIFT) &
3235                             I40E_QTX_CTL_VFVM_INDX_MASK;
3236         } else {
3237                 if (vsi->type == I40E_VSI_VMDQ2) {
3238                         qtx_ctl = I40E_QTX_CTL_VM_QUEUE;
3239                         qtx_ctl |= ((vsi->id) << I40E_QTX_CTL_VFVM_INDX_SHIFT) &
3240                                     I40E_QTX_CTL_VFVM_INDX_MASK;
3241                 } else {
3242                         qtx_ctl = I40E_QTX_CTL_PF_QUEUE;
3243                 }
3244         }
3245
3246         qtx_ctl |= ((hw->pf_id << I40E_QTX_CTL_PF_INDX_SHIFT) &
3247                     I40E_QTX_CTL_PF_INDX_MASK);
3248         wr32(hw, I40E_QTX_CTL(pf_q), qtx_ctl);
3249         i40e_flush(hw);
3250
3251         /* cache tail off for easier writes later */
3252         ring->tail = hw->hw_addr + I40E_QTX_TAIL(pf_q);
3253
3254         return 0;
3255 }
3256
3257 /**
3258  * i40e_configure_rx_ring - Configure a receive ring context
3259  * @ring: The Rx ring to configure
3260  *
3261  * Configure the Rx descriptor ring in the HMC context.
3262  **/
3263 static int i40e_configure_rx_ring(struct i40e_ring *ring)
3264 {
3265         struct i40e_vsi *vsi = ring->vsi;
3266         u32 chain_len = vsi->back->hw.func_caps.rx_buf_chain_len;
3267         u16 pf_q = vsi->base_queue + ring->queue_index;
3268         struct i40e_hw *hw = &vsi->back->hw;
3269         struct i40e_hmc_obj_rxq rx_ctx;
3270         i40e_status err = 0;
3271         bool ok;
3272         int ret;
3273
3274         bitmap_zero(ring->state, __I40E_RING_STATE_NBITS);
3275
3276         /* clear the context structure first */
3277         memset(&rx_ctx, 0, sizeof(rx_ctx));
3278
3279         if (ring->vsi->type == I40E_VSI_MAIN)
3280                 xdp_rxq_info_unreg_mem_model(&ring->xdp_rxq);
3281
3282         kfree(ring->rx_bi);
3283         ring->xsk_pool = i40e_xsk_pool(ring);
3284         if (ring->xsk_pool) {
3285                 ret = i40e_alloc_rx_bi_zc(ring);
3286                 if (ret)
3287                         return ret;
3288                 ring->rx_buf_len =
3289                   xsk_pool_get_rx_frame_size(ring->xsk_pool);
3290                 /* For AF_XDP ZC, we disallow packets to span on
3291                  * multiple buffers, thus letting us skip that
3292                  * handling in the fast-path.
3293                  */
3294                 chain_len = 1;
3295                 ret = xdp_rxq_info_reg_mem_model(&ring->xdp_rxq,
3296                                                  MEM_TYPE_XSK_BUFF_POOL,
3297                                                  NULL);
3298                 if (ret)
3299                         return ret;
3300                 dev_info(&vsi->back->pdev->dev,
3301                          "Registered XDP mem model MEM_TYPE_XSK_BUFF_POOL on Rx ring %d\n",
3302                          ring->queue_index);
3303
3304         } else {
3305                 ret = i40e_alloc_rx_bi(ring);
3306                 if (ret)
3307                         return ret;
3308                 ring->rx_buf_len = vsi->rx_buf_len;
3309                 if (ring->vsi->type == I40E_VSI_MAIN) {
3310                         ret = xdp_rxq_info_reg_mem_model(&ring->xdp_rxq,
3311                                                          MEM_TYPE_PAGE_SHARED,
3312                                                          NULL);
3313                         if (ret)
3314                                 return ret;
3315                 }
3316         }
3317
3318         rx_ctx.dbuff = DIV_ROUND_UP(ring->rx_buf_len,
3319                                     BIT_ULL(I40E_RXQ_CTX_DBUFF_SHIFT));
3320
3321         rx_ctx.base = (ring->dma / 128);
3322         rx_ctx.qlen = ring->count;
3323
3324         /* use 32 byte descriptors */
3325         rx_ctx.dsize = 1;
3326
3327         /* descriptor type is always zero
3328          * rx_ctx.dtype = 0;
3329          */
3330         rx_ctx.hsplit_0 = 0;
3331
3332         rx_ctx.rxmax = min_t(u16, vsi->max_frame, chain_len * ring->rx_buf_len);
3333         if (hw->revision_id == 0)
3334                 rx_ctx.lrxqthresh = 0;
3335         else
3336                 rx_ctx.lrxqthresh = 1;
3337         rx_ctx.crcstrip = 1;
3338         rx_ctx.l2tsel = 1;
3339         /* this controls whether VLAN is stripped from inner headers */
3340         rx_ctx.showiv = 0;
3341         /* set the prefena field to 1 because the manual says to */
3342         rx_ctx.prefena = 1;
3343
3344         /* clear the context in the HMC */
3345         err = i40e_clear_lan_rx_queue_context(hw, pf_q);
3346         if (err) {
3347                 dev_info(&vsi->back->pdev->dev,
3348                          "Failed to clear LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
3349                          ring->queue_index, pf_q, err);
3350                 return -ENOMEM;
3351         }
3352
3353         /* set the context in the HMC */
3354         err = i40e_set_lan_rx_queue_context(hw, pf_q, &rx_ctx);
3355         if (err) {
3356                 dev_info(&vsi->back->pdev->dev,
3357                          "Failed to set LAN Rx queue context on Rx ring %d (pf_q %d), error: %d\n",
3358                          ring->queue_index, pf_q, err);
3359                 return -ENOMEM;
3360         }
3361
3362         /* configure Rx buffer alignment */
3363         if (!vsi->netdev || (vsi->back->flags & I40E_FLAG_LEGACY_RX))
3364                 clear_ring_build_skb_enabled(ring);
3365         else
3366                 set_ring_build_skb_enabled(ring);
3367
3368         /* cache tail for quicker writes, and clear the reg before use */
3369         ring->tail = hw->hw_addr + I40E_QRX_TAIL(pf_q);
3370         writel(0, ring->tail);
3371
3372         if (ring->xsk_pool) {
3373                 xsk_pool_set_rxq_info(ring->xsk_pool, &ring->xdp_rxq);
3374                 ok = i40e_alloc_rx_buffers_zc(ring, I40E_DESC_UNUSED(ring));
3375         } else {
3376                 ok = !i40e_alloc_rx_buffers(ring, I40E_DESC_UNUSED(ring));
3377         }
3378         if (!ok) {
3379                 /* Log this in case the user has forgotten to give the kernel
3380                  * any buffers, even later in the application.
3381                  */
3382                 dev_info(&vsi->back->pdev->dev,
3383                          "Failed to allocate some buffers on %sRx ring %d (pf_q %d)\n",
3384                          ring->xsk_pool ? "AF_XDP ZC enabled " : "",
3385                          ring->queue_index, pf_q);
3386         }
3387
3388         return 0;
3389 }
3390
3391 /**
3392  * i40e_vsi_configure_tx - Configure the VSI for Tx
3393  * @vsi: VSI structure describing this set of rings and resources
3394  *
3395  * Configure the Tx VSI for operation.
3396  **/
3397 static int i40e_vsi_configure_tx(struct i40e_vsi *vsi)
3398 {
3399         int err = 0;
3400         u16 i;
3401
3402         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
3403                 err = i40e_configure_tx_ring(vsi->tx_rings[i]);
3404
3405         if (err || !i40e_enabled_xdp_vsi(vsi))
3406                 return err;
3407
3408         for (i = 0; (i < vsi->num_queue_pairs) && !err; i++)
3409                 err = i40e_configure_tx_ring(vsi->xdp_rings[i]);
3410
3411         return err;
3412 }
3413
3414 /**
3415  * i40e_vsi_configure_rx - Configure the VSI for Rx
3416  * @vsi: the VSI being configured
3417  *
3418  * Configure the Rx VSI for operation.
3419  **/
3420 static int i40e_vsi_configure_rx(struct i40e_vsi *vsi)
3421 {
3422         int err = 0;
3423         u16 i;
3424
3425         if (!vsi->netdev || (vsi->back->flags & I40E_FLAG_LEGACY_RX)) {
3426                 vsi->max_frame = I40E_MAX_RXBUFFER;
3427                 vsi->rx_buf_len = I40E_RXBUFFER_2048;
3428 #if (PAGE_SIZE < 8192)
3429         } else if (!I40E_2K_TOO_SMALL_WITH_PADDING &&
3430                    (vsi->netdev->mtu <= ETH_DATA_LEN)) {
3431                 vsi->max_frame = I40E_RXBUFFER_1536 - NET_IP_ALIGN;
3432                 vsi->rx_buf_len = I40E_RXBUFFER_1536 - NET_IP_ALIGN;
3433 #endif
3434         } else {
3435                 vsi->max_frame = I40E_MAX_RXBUFFER;
3436                 vsi->rx_buf_len = (PAGE_SIZE < 8192) ? I40E_RXBUFFER_3072 :
3437                                                        I40E_RXBUFFER_2048;
3438         }
3439
3440         /* set up individual rings */
3441         for (i = 0; i < vsi->num_queue_pairs && !err; i++)
3442                 err = i40e_configure_rx_ring(vsi->rx_rings[i]);
3443
3444         return err;
3445 }
3446
3447 /**
3448  * i40e_vsi_config_dcb_rings - Update rings to reflect DCB TC
3449  * @vsi: ptr to the VSI
3450  **/
3451 static void i40e_vsi_config_dcb_rings(struct i40e_vsi *vsi)
3452 {
3453         struct i40e_ring *tx_ring, *rx_ring;
3454         u16 qoffset, qcount;
3455         int i, n;
3456
3457         if (!(vsi->back->flags & I40E_FLAG_DCB_ENABLED)) {
3458                 /* Reset the TC information */
3459                 for (i = 0; i < vsi->num_queue_pairs; i++) {
3460                         rx_ring = vsi->rx_rings[i];
3461                         tx_ring = vsi->tx_rings[i];
3462                         rx_ring->dcb_tc = 0;
3463                         tx_ring->dcb_tc = 0;
3464                 }
3465                 return;
3466         }
3467
3468         for (n = 0; n < I40E_MAX_TRAFFIC_CLASS; n++) {
3469                 if (!(vsi->tc_config.enabled_tc & BIT_ULL(n)))
3470                         continue;
3471
3472                 qoffset = vsi->tc_config.tc_info[n].qoffset;
3473                 qcount = vsi->tc_config.tc_info[n].qcount;
3474                 for (i = qoffset; i < (qoffset + qcount); i++) {
3475                         rx_ring = vsi->rx_rings[i];
3476                         tx_ring = vsi->tx_rings[i];
3477                         rx_ring->dcb_tc = n;
3478                         tx_ring->dcb_tc = n;
3479                 }
3480         }
3481 }
3482
3483 /**
3484  * i40e_set_vsi_rx_mode - Call set_rx_mode on a VSI
3485  * @vsi: ptr to the VSI
3486  **/
3487 static void i40e_set_vsi_rx_mode(struct i40e_vsi *vsi)
3488 {
3489         if (vsi->netdev)
3490                 i40e_set_rx_mode(vsi->netdev);
3491 }
3492
3493 /**
3494  * i40e_fdir_filter_restore - Restore the Sideband Flow Director filters
3495  * @vsi: Pointer to the targeted VSI
3496  *
3497  * This function replays the hlist on the hw where all the SB Flow Director
3498  * filters were saved.
3499  **/
3500 static void i40e_fdir_filter_restore(struct i40e_vsi *vsi)
3501 {
3502         struct i40e_fdir_filter *filter;
3503         struct i40e_pf *pf = vsi->back;
3504         struct hlist_node *node;
3505
3506         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
3507                 return;
3508
3509         /* Reset FDir counters as we're replaying all existing filters */
3510         pf->fd_tcp4_filter_cnt = 0;
3511         pf->fd_udp4_filter_cnt = 0;
3512         pf->fd_sctp4_filter_cnt = 0;
3513         pf->fd_ip4_filter_cnt = 0;
3514
3515         hlist_for_each_entry_safe(filter, node,
3516                                   &pf->fdir_filter_list, fdir_node) {
3517                 i40e_add_del_fdir(vsi, filter, true);
3518         }
3519 }
3520
3521 /**
3522  * i40e_vsi_configure - Set up the VSI for action
3523  * @vsi: the VSI being configured
3524  **/
3525 static int i40e_vsi_configure(struct i40e_vsi *vsi)
3526 {
3527         int err;
3528
3529         i40e_set_vsi_rx_mode(vsi);
3530         i40e_restore_vlan(vsi);
3531         i40e_vsi_config_dcb_rings(vsi);
3532         err = i40e_vsi_configure_tx(vsi);
3533         if (!err)
3534                 err = i40e_vsi_configure_rx(vsi);
3535
3536         return err;
3537 }
3538
3539 /**
3540  * i40e_vsi_configure_msix - MSIX mode Interrupt Config in the HW
3541  * @vsi: the VSI being configured
3542  **/
3543 static void i40e_vsi_configure_msix(struct i40e_vsi *vsi)
3544 {
3545         bool has_xdp = i40e_enabled_xdp_vsi(vsi);
3546         struct i40e_pf *pf = vsi->back;
3547         struct i40e_hw *hw = &pf->hw;
3548         u16 vector;
3549         int i, q;
3550         u32 qp;
3551
3552         /* The interrupt indexing is offset by 1 in the PFINT_ITRn
3553          * and PFINT_LNKLSTn registers, e.g.:
3554          *   PFINT_ITRn[0..n-1] gets msix-1..msix-n  (qpair interrupts)
3555          */
3556         qp = vsi->base_queue;
3557         vector = vsi->base_vector;
3558         for (i = 0; i < vsi->num_q_vectors; i++, vector++) {
3559                 struct i40e_q_vector *q_vector = vsi->q_vectors[i];
3560
3561                 q_vector->rx.next_update = jiffies + 1;
3562                 q_vector->rx.target_itr =
3563                         ITR_TO_REG(vsi->rx_rings[i]->itr_setting);
3564                 wr32(hw, I40E_PFINT_ITRN(I40E_RX_ITR, vector - 1),
3565                      q_vector->rx.target_itr >> 1);
3566                 q_vector->rx.current_itr = q_vector->rx.target_itr;
3567
3568                 q_vector->tx.next_update = jiffies + 1;
3569                 q_vector->tx.target_itr =
3570                         ITR_TO_REG(vsi->tx_rings[i]->itr_setting);
3571                 wr32(hw, I40E_PFINT_ITRN(I40E_TX_ITR, vector - 1),
3572                      q_vector->tx.target_itr >> 1);
3573                 q_vector->tx.current_itr = q_vector->tx.target_itr;
3574
3575                 wr32(hw, I40E_PFINT_RATEN(vector - 1),
3576                      i40e_intrl_usec_to_reg(vsi->int_rate_limit));
3577
3578                 /* Linked list for the queuepairs assigned to this vector */
3579                 wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), qp);
3580                 for (q = 0; q < q_vector->num_ringpairs; q++) {
3581                         u32 nextqp = has_xdp ? qp + vsi->alloc_queue_pairs : qp;
3582                         u32 val;
3583
3584                         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK |
3585                               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT) |
3586                               (vector << I40E_QINT_RQCTL_MSIX_INDX_SHIFT) |
3587                               (nextqp << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT) |
3588                               (I40E_QUEUE_TYPE_TX <<
3589                                I40E_QINT_RQCTL_NEXTQ_TYPE_SHIFT);
3590
3591                         wr32(hw, I40E_QINT_RQCTL(qp), val);
3592
3593                         if (has_xdp) {
3594                                 val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
3595                                       (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3596                                       (vector << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
3597                                       (qp << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT) |
3598                                       (I40E_QUEUE_TYPE_TX <<
3599                                        I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3600
3601                                 wr32(hw, I40E_QINT_TQCTL(nextqp), val);
3602                         }
3603
3604                         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK |
3605                               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3606                               (vector << I40E_QINT_TQCTL_MSIX_INDX_SHIFT) |
3607                               ((qp + 1) << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT) |
3608                               (I40E_QUEUE_TYPE_RX <<
3609                                I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3610
3611                         /* Terminate the linked list */
3612                         if (q == (q_vector->num_ringpairs - 1))
3613                                 val |= (I40E_QUEUE_END_OF_LIST <<
3614                                         I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3615
3616                         wr32(hw, I40E_QINT_TQCTL(qp), val);
3617                         qp++;
3618                 }
3619         }
3620
3621         i40e_flush(hw);
3622 }
3623
3624 /**
3625  * i40e_enable_misc_int_causes - enable the non-queue interrupts
3626  * @pf: pointer to private device data structure
3627  **/
3628 static void i40e_enable_misc_int_causes(struct i40e_pf *pf)
3629 {
3630         struct i40e_hw *hw = &pf->hw;
3631         u32 val;
3632
3633         /* clear things first */
3634         wr32(hw, I40E_PFINT_ICR0_ENA, 0);  /* disable all */
3635         rd32(hw, I40E_PFINT_ICR0);         /* read to clear */
3636
3637         val = I40E_PFINT_ICR0_ENA_ECC_ERR_MASK       |
3638               I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK    |
3639               I40E_PFINT_ICR0_ENA_GRST_MASK          |
3640               I40E_PFINT_ICR0_ENA_PCI_EXCEPTION_MASK |
3641               I40E_PFINT_ICR0_ENA_GPIO_MASK          |
3642               I40E_PFINT_ICR0_ENA_HMC_ERR_MASK       |
3643               I40E_PFINT_ICR0_ENA_VFLR_MASK          |
3644               I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
3645
3646         if (pf->flags & I40E_FLAG_IWARP_ENABLED)
3647                 val |= I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3648
3649         if (pf->flags & I40E_FLAG_PTP)
3650                 val |= I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
3651
3652         wr32(hw, I40E_PFINT_ICR0_ENA, val);
3653
3654         /* SW_ITR_IDX = 0, but don't change INTENA */
3655         wr32(hw, I40E_PFINT_DYN_CTL0, I40E_PFINT_DYN_CTL0_SW_ITR_INDX_MASK |
3656                                         I40E_PFINT_DYN_CTL0_INTENA_MSK_MASK);
3657
3658         /* OTHER_ITR_IDX = 0 */
3659         wr32(hw, I40E_PFINT_STAT_CTL0, 0);
3660 }
3661
3662 /**
3663  * i40e_configure_msi_and_legacy - Legacy mode interrupt config in the HW
3664  * @vsi: the VSI being configured
3665  **/
3666 static void i40e_configure_msi_and_legacy(struct i40e_vsi *vsi)
3667 {
3668         u32 nextqp = i40e_enabled_xdp_vsi(vsi) ? vsi->alloc_queue_pairs : 0;
3669         struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3670         struct i40e_pf *pf = vsi->back;
3671         struct i40e_hw *hw = &pf->hw;
3672         u32 val;
3673
3674         /* set the ITR configuration */
3675         q_vector->rx.next_update = jiffies + 1;
3676         q_vector->rx.target_itr = ITR_TO_REG(vsi->rx_rings[0]->itr_setting);
3677         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), q_vector->rx.target_itr >> 1);
3678         q_vector->rx.current_itr = q_vector->rx.target_itr;
3679         q_vector->tx.next_update = jiffies + 1;
3680         q_vector->tx.target_itr = ITR_TO_REG(vsi->tx_rings[0]->itr_setting);
3681         wr32(hw, I40E_PFINT_ITR0(I40E_TX_ITR), q_vector->tx.target_itr >> 1);
3682         q_vector->tx.current_itr = q_vector->tx.target_itr;
3683
3684         i40e_enable_misc_int_causes(pf);
3685
3686         /* FIRSTQ_INDX = 0, FIRSTQ_TYPE = 0 (rx) */
3687         wr32(hw, I40E_PFINT_LNKLST0, 0);
3688
3689         /* Associate the queue pair to the vector and enable the queue int */
3690         val = I40E_QINT_RQCTL_CAUSE_ENA_MASK                   |
3691               (I40E_RX_ITR << I40E_QINT_RQCTL_ITR_INDX_SHIFT)  |
3692               (nextqp      << I40E_QINT_RQCTL_NEXTQ_INDX_SHIFT)|
3693               (I40E_QUEUE_TYPE_TX << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3694
3695         wr32(hw, I40E_QINT_RQCTL(0), val);
3696
3697         if (i40e_enabled_xdp_vsi(vsi)) {
3698                 val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                 |
3699                       (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT)|
3700                       (I40E_QUEUE_TYPE_TX
3701                        << I40E_QINT_TQCTL_NEXTQ_TYPE_SHIFT);
3702
3703                 wr32(hw, I40E_QINT_TQCTL(nextqp), val);
3704         }
3705
3706         val = I40E_QINT_TQCTL_CAUSE_ENA_MASK                  |
3707               (I40E_TX_ITR << I40E_QINT_TQCTL_ITR_INDX_SHIFT) |
3708               (I40E_QUEUE_END_OF_LIST << I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT);
3709
3710         wr32(hw, I40E_QINT_TQCTL(0), val);
3711         i40e_flush(hw);
3712 }
3713
3714 /**
3715  * i40e_irq_dynamic_disable_icr0 - Disable default interrupt generation for icr0
3716  * @pf: board private structure
3717  **/
3718 void i40e_irq_dynamic_disable_icr0(struct i40e_pf *pf)
3719 {
3720         struct i40e_hw *hw = &pf->hw;
3721
3722         wr32(hw, I40E_PFINT_DYN_CTL0,
3723              I40E_ITR_NONE << I40E_PFINT_DYN_CTLN_ITR_INDX_SHIFT);
3724         i40e_flush(hw);
3725 }
3726
3727 /**
3728  * i40e_irq_dynamic_enable_icr0 - Enable default interrupt generation for icr0
3729  * @pf: board private structure
3730  **/
3731 void i40e_irq_dynamic_enable_icr0(struct i40e_pf *pf)
3732 {
3733         struct i40e_hw *hw = &pf->hw;
3734         u32 val;
3735
3736         val = I40E_PFINT_DYN_CTL0_INTENA_MASK   |
3737               I40E_PFINT_DYN_CTL0_CLEARPBA_MASK |
3738               (I40E_ITR_NONE << I40E_PFINT_DYN_CTL0_ITR_INDX_SHIFT);
3739
3740         wr32(hw, I40E_PFINT_DYN_CTL0, val);
3741         i40e_flush(hw);
3742 }
3743
3744 /**
3745  * i40e_msix_clean_rings - MSIX mode Interrupt Handler
3746  * @irq: interrupt number
3747  * @data: pointer to a q_vector
3748  **/
3749 static irqreturn_t i40e_msix_clean_rings(int irq, void *data)
3750 {
3751         struct i40e_q_vector *q_vector = data;
3752
3753         if (!q_vector->tx.ring && !q_vector->rx.ring)
3754                 return IRQ_HANDLED;
3755
3756         napi_schedule_irqoff(&q_vector->napi);
3757
3758         return IRQ_HANDLED;
3759 }
3760
3761 /**
3762  * i40e_irq_affinity_notify - Callback for affinity changes
3763  * @notify: context as to what irq was changed
3764  * @mask: the new affinity mask
3765  *
3766  * This is a callback function used by the irq_set_affinity_notifier function
3767  * so that we may register to receive changes to the irq affinity masks.
3768  **/
3769 static void i40e_irq_affinity_notify(struct irq_affinity_notify *notify,
3770                                      const cpumask_t *mask)
3771 {
3772         struct i40e_q_vector *q_vector =
3773                 container_of(notify, struct i40e_q_vector, affinity_notify);
3774
3775         cpumask_copy(&q_vector->affinity_mask, mask);
3776 }
3777
3778 /**
3779  * i40e_irq_affinity_release - Callback for affinity notifier release
3780  * @ref: internal core kernel usage
3781  *
3782  * This is a callback function used by the irq_set_affinity_notifier function
3783  * to inform the current notification subscriber that they will no longer
3784  * receive notifications.
3785  **/
3786 static void i40e_irq_affinity_release(struct kref *ref) {}
3787
3788 /**
3789  * i40e_vsi_request_irq_msix - Initialize MSI-X interrupts
3790  * @vsi: the VSI being configured
3791  * @basename: name for the vector
3792  *
3793  * Allocates MSI-X vectors and requests interrupts from the kernel.
3794  **/
3795 static int i40e_vsi_request_irq_msix(struct i40e_vsi *vsi, char *basename)
3796 {
3797         int q_vectors = vsi->num_q_vectors;
3798         struct i40e_pf *pf = vsi->back;
3799         int base = vsi->base_vector;
3800         int rx_int_idx = 0;
3801         int tx_int_idx = 0;
3802         int vector, err;
3803         int irq_num;
3804         int cpu;
3805
3806         for (vector = 0; vector < q_vectors; vector++) {
3807                 struct i40e_q_vector *q_vector = vsi->q_vectors[vector];
3808
3809                 irq_num = pf->msix_entries[base + vector].vector;
3810
3811                 if (q_vector->tx.ring && q_vector->rx.ring) {
3812                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3813                                  "%s-%s-%d", basename, "TxRx", rx_int_idx++);
3814                         tx_int_idx++;
3815                 } else if (q_vector->rx.ring) {
3816                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3817                                  "%s-%s-%d", basename, "rx", rx_int_idx++);
3818                 } else if (q_vector->tx.ring) {
3819                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
3820                                  "%s-%s-%d", basename, "tx", tx_int_idx++);
3821                 } else {
3822                         /* skip this unused q_vector */
3823                         continue;
3824                 }
3825                 err = request_irq(irq_num,
3826                                   vsi->irq_handler,
3827                                   0,
3828                                   q_vector->name,
3829                                   q_vector);
3830                 if (err) {
3831                         dev_info(&pf->pdev->dev,
3832                                  "MSIX request_irq failed, error: %d\n", err);
3833                         goto free_queue_irqs;
3834                 }
3835
3836                 /* register for affinity change notifications */
3837                 q_vector->affinity_notify.notify = i40e_irq_affinity_notify;
3838                 q_vector->affinity_notify.release = i40e_irq_affinity_release;
3839                 irq_set_affinity_notifier(irq_num, &q_vector->affinity_notify);
3840                 /* Spread affinity hints out across online CPUs.
3841                  *
3842                  * get_cpu_mask returns a static constant mask with
3843                  * a permanent lifetime so it's ok to pass to
3844                  * irq_set_affinity_hint without making a copy.
3845                  */
3846                 cpu = cpumask_local_spread(q_vector->v_idx, -1);
3847                 irq_set_affinity_hint(irq_num, get_cpu_mask(cpu));
3848         }
3849
3850         vsi->irqs_ready = true;
3851         return 0;
3852
3853 free_queue_irqs:
3854         while (vector) {
3855                 vector--;
3856                 irq_num = pf->msix_entries[base + vector].vector;
3857                 irq_set_affinity_notifier(irq_num, NULL);
3858                 irq_set_affinity_hint(irq_num, NULL);
3859                 free_irq(irq_num, &vsi->q_vectors[vector]);
3860         }
3861         return err;
3862 }
3863
3864 /**
3865  * i40e_vsi_disable_irq - Mask off queue interrupt generation on the VSI
3866  * @vsi: the VSI being un-configured
3867  **/
3868 static void i40e_vsi_disable_irq(struct i40e_vsi *vsi)
3869 {
3870         struct i40e_pf *pf = vsi->back;
3871         struct i40e_hw *hw = &pf->hw;
3872         int base = vsi->base_vector;
3873         int i;
3874
3875         /* disable interrupt causation from each queue */
3876         for (i = 0; i < vsi->num_queue_pairs; i++) {
3877                 u32 val;
3878
3879                 val = rd32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx));
3880                 val &= ~I40E_QINT_TQCTL_CAUSE_ENA_MASK;
3881                 wr32(hw, I40E_QINT_TQCTL(vsi->tx_rings[i]->reg_idx), val);
3882
3883                 val = rd32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx));
3884                 val &= ~I40E_QINT_RQCTL_CAUSE_ENA_MASK;
3885                 wr32(hw, I40E_QINT_RQCTL(vsi->rx_rings[i]->reg_idx), val);
3886
3887                 if (!i40e_enabled_xdp_vsi(vsi))
3888                         continue;
3889                 wr32(hw, I40E_QINT_TQCTL(vsi->xdp_rings[i]->reg_idx), 0);
3890         }
3891
3892         /* disable each interrupt */
3893         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3894                 for (i = vsi->base_vector;
3895                      i < (vsi->num_q_vectors + vsi->base_vector); i++)
3896                         wr32(hw, I40E_PFINT_DYN_CTLN(i - 1), 0);
3897
3898                 i40e_flush(hw);
3899                 for (i = 0; i < vsi->num_q_vectors; i++)
3900                         synchronize_irq(pf->msix_entries[i + base].vector);
3901         } else {
3902                 /* Legacy and MSI mode - this stops all interrupt handling */
3903                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
3904                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
3905                 i40e_flush(hw);
3906                 synchronize_irq(pf->pdev->irq);
3907         }
3908 }
3909
3910 /**
3911  * i40e_vsi_enable_irq - Enable IRQ for the given VSI
3912  * @vsi: the VSI being configured
3913  **/
3914 static int i40e_vsi_enable_irq(struct i40e_vsi *vsi)
3915 {
3916         struct i40e_pf *pf = vsi->back;
3917         int i;
3918
3919         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
3920                 for (i = 0; i < vsi->num_q_vectors; i++)
3921                         i40e_irq_dynamic_enable(vsi, i);
3922         } else {
3923                 i40e_irq_dynamic_enable_icr0(pf);
3924         }
3925
3926         i40e_flush(&pf->hw);
3927         return 0;
3928 }
3929
3930 /**
3931  * i40e_free_misc_vector - Free the vector that handles non-queue events
3932  * @pf: board private structure
3933  **/
3934 static void i40e_free_misc_vector(struct i40e_pf *pf)
3935 {
3936         /* Disable ICR 0 */
3937         wr32(&pf->hw, I40E_PFINT_ICR0_ENA, 0);
3938         i40e_flush(&pf->hw);
3939
3940         if (pf->flags & I40E_FLAG_MSIX_ENABLED && pf->msix_entries) {
3941                 synchronize_irq(pf->msix_entries[0].vector);
3942                 free_irq(pf->msix_entries[0].vector, pf);
3943                 clear_bit(__I40E_MISC_IRQ_REQUESTED, pf->state);
3944         }
3945 }
3946
3947 /**
3948  * i40e_intr - MSI/Legacy and non-queue interrupt handler
3949  * @irq: interrupt number
3950  * @data: pointer to a q_vector
3951  *
3952  * This is the handler used for all MSI/Legacy interrupts, and deals
3953  * with both queue and non-queue interrupts.  This is also used in
3954  * MSIX mode to handle the non-queue interrupts.
3955  **/
3956 static irqreturn_t i40e_intr(int irq, void *data)
3957 {
3958         struct i40e_pf *pf = (struct i40e_pf *)data;
3959         struct i40e_hw *hw = &pf->hw;
3960         irqreturn_t ret = IRQ_NONE;
3961         u32 icr0, icr0_remaining;
3962         u32 val, ena_mask;
3963
3964         icr0 = rd32(hw, I40E_PFINT_ICR0);
3965         ena_mask = rd32(hw, I40E_PFINT_ICR0_ENA);
3966
3967         /* if sharing a legacy IRQ, we might get called w/o an intr pending */
3968         if ((icr0 & I40E_PFINT_ICR0_INTEVENT_MASK) == 0)
3969                 goto enable_intr;
3970
3971         /* if interrupt but no bits showing, must be SWINT */
3972         if (((icr0 & ~I40E_PFINT_ICR0_INTEVENT_MASK) == 0) ||
3973             (icr0 & I40E_PFINT_ICR0_SWINT_MASK))
3974                 pf->sw_int_count++;
3975
3976         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
3977             (icr0 & I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK)) {
3978                 ena_mask &= ~I40E_PFINT_ICR0_ENA_PE_CRITERR_MASK;
3979                 dev_dbg(&pf->pdev->dev, "cleared PE_CRITERR\n");
3980                 set_bit(__I40E_CORE_RESET_REQUESTED, pf->state);
3981         }
3982
3983         /* only q0 is used in MSI/Legacy mode, and none are used in MSIX */
3984         if (icr0 & I40E_PFINT_ICR0_QUEUE_0_MASK) {
3985                 struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
3986                 struct i40e_q_vector *q_vector = vsi->q_vectors[0];
3987
3988                 /* We do not have a way to disarm Queue causes while leaving
3989                  * interrupt enabled for all other causes, ideally
3990                  * interrupt should be disabled while we are in NAPI but
3991                  * this is not a performance path and napi_schedule()
3992                  * can deal with rescheduling.
3993                  */
3994                 if (!test_bit(__I40E_DOWN, pf->state))
3995                         napi_schedule_irqoff(&q_vector->napi);
3996         }
3997
3998         if (icr0 & I40E_PFINT_ICR0_ADMINQ_MASK) {
3999                 ena_mask &= ~I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
4000                 set_bit(__I40E_ADMINQ_EVENT_PENDING, pf->state);
4001                 i40e_debug(&pf->hw, I40E_DEBUG_NVM, "AdminQ event\n");
4002         }
4003
4004         if (icr0 & I40E_PFINT_ICR0_MAL_DETECT_MASK) {
4005                 ena_mask &= ~I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
4006                 set_bit(__I40E_MDD_EVENT_PENDING, pf->state);
4007         }
4008
4009         if (icr0 & I40E_PFINT_ICR0_VFLR_MASK) {
4010                 ena_mask &= ~I40E_PFINT_ICR0_ENA_VFLR_MASK;
4011                 set_bit(__I40E_VFLR_EVENT_PENDING, pf->state);
4012         }
4013
4014         if (icr0 & I40E_PFINT_ICR0_GRST_MASK) {
4015                 if (!test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state))
4016                         set_bit(__I40E_RESET_INTR_RECEIVED, pf->state);
4017                 ena_mask &= ~I40E_PFINT_ICR0_ENA_GRST_MASK;
4018                 val = rd32(hw, I40E_GLGEN_RSTAT);
4019                 val = (val & I40E_GLGEN_RSTAT_RESET_TYPE_MASK)
4020                        >> I40E_GLGEN_RSTAT_RESET_TYPE_SHIFT;
4021                 if (val == I40E_RESET_CORER) {
4022                         pf->corer_count++;
4023                 } else if (val == I40E_RESET_GLOBR) {
4024                         pf->globr_count++;
4025                 } else if (val == I40E_RESET_EMPR) {
4026                         pf->empr_count++;
4027                         set_bit(__I40E_EMP_RESET_INTR_RECEIVED, pf->state);
4028                 }
4029         }
4030
4031         if (icr0 & I40E_PFINT_ICR0_HMC_ERR_MASK) {
4032                 icr0 &= ~I40E_PFINT_ICR0_HMC_ERR_MASK;
4033                 dev_info(&pf->pdev->dev, "HMC error interrupt\n");
4034                 dev_info(&pf->pdev->dev, "HMC error info 0x%x, HMC error data 0x%x\n",
4035                          rd32(hw, I40E_PFHMC_ERRORINFO),
4036                          rd32(hw, I40E_PFHMC_ERRORDATA));
4037         }
4038
4039         if (icr0 & I40E_PFINT_ICR0_TIMESYNC_MASK) {
4040                 u32 prttsyn_stat = rd32(hw, I40E_PRTTSYN_STAT_0);
4041
4042                 if (prttsyn_stat & I40E_PRTTSYN_STAT_0_TXTIME_MASK) {
4043                         icr0 &= ~I40E_PFINT_ICR0_ENA_TIMESYNC_MASK;
4044                         i40e_ptp_tx_hwtstamp(pf);
4045                 }
4046         }
4047
4048         /* If a critical error is pending we have no choice but to reset the
4049          * device.
4050          * Report and mask out any remaining unexpected interrupts.
4051          */
4052         icr0_remaining = icr0 & ena_mask;
4053         if (icr0_remaining) {
4054                 dev_info(&pf->pdev->dev, "unhandled interrupt icr0=0x%08x\n",
4055                          icr0_remaining);
4056                 if ((icr0_remaining & I40E_PFINT_ICR0_PE_CRITERR_MASK) ||
4057                     (icr0_remaining & I40E_PFINT_ICR0_PCI_EXCEPTION_MASK) ||
4058                     (icr0_remaining & I40E_PFINT_ICR0_ECC_ERR_MASK)) {
4059                         dev_info(&pf->pdev->dev, "device will be reset\n");
4060                         set_bit(__I40E_PF_RESET_REQUESTED, pf->state);
4061                         i40e_service_event_schedule(pf);
4062                 }
4063                 ena_mask &= ~icr0_remaining;
4064         }
4065         ret = IRQ_HANDLED;
4066
4067 enable_intr:
4068         /* re-enable interrupt causes */
4069         wr32(hw, I40E_PFINT_ICR0_ENA, ena_mask);
4070         if (!test_bit(__I40E_DOWN, pf->state) ||
4071             test_bit(__I40E_RECOVERY_MODE, pf->state)) {
4072                 i40e_service_event_schedule(pf);
4073                 i40e_irq_dynamic_enable_icr0(pf);
4074         }
4075
4076         return ret;
4077 }
4078
4079 /**
4080  * i40e_clean_fdir_tx_irq - Reclaim resources after transmit completes
4081  * @tx_ring:  tx ring to clean
4082  * @budget:   how many cleans we're allowed
4083  *
4084  * Returns true if there's any budget left (e.g. the clean is finished)
4085  **/
4086 static bool i40e_clean_fdir_tx_irq(struct i40e_ring *tx_ring, int budget)
4087 {
4088         struct i40e_vsi *vsi = tx_ring->vsi;
4089         u16 i = tx_ring->next_to_clean;
4090         struct i40e_tx_buffer *tx_buf;
4091         struct i40e_tx_desc *tx_desc;
4092
4093         tx_buf = &tx_ring->tx_bi[i];
4094         tx_desc = I40E_TX_DESC(tx_ring, i);
4095         i -= tx_ring->count;
4096
4097         do {
4098                 struct i40e_tx_desc *eop_desc = tx_buf->next_to_watch;
4099
4100                 /* if next_to_watch is not set then there is no work pending */
4101                 if (!eop_desc)
4102                         break;
4103
4104                 /* prevent any other reads prior to eop_desc */
4105                 smp_rmb();
4106
4107                 /* if the descriptor isn't done, no work yet to do */
4108                 if (!(eop_desc->cmd_type_offset_bsz &
4109                       cpu_to_le64(I40E_TX_DESC_DTYPE_DESC_DONE)))
4110                         break;
4111
4112                 /* clear next_to_watch to prevent false hangs */
4113                 tx_buf->next_to_watch = NULL;
4114
4115                 tx_desc->buffer_addr = 0;
4116                 tx_desc->cmd_type_offset_bsz = 0;
4117                 /* move past filter desc */
4118                 tx_buf++;
4119                 tx_desc++;
4120                 i++;
4121                 if (unlikely(!i)) {
4122                         i -= tx_ring->count;
4123                         tx_buf = tx_ring->tx_bi;
4124                         tx_desc = I40E_TX_DESC(tx_ring, 0);
4125                 }
4126                 /* unmap skb header data */
4127                 dma_unmap_single(tx_ring->dev,
4128                                  dma_unmap_addr(tx_buf, dma),
4129                                  dma_unmap_len(tx_buf, len),
4130                                  DMA_TO_DEVICE);
4131                 if (tx_buf->tx_flags & I40E_TX_FLAGS_FD_SB)
4132                         kfree(tx_buf->raw_buf);
4133
4134                 tx_buf->raw_buf = NULL;
4135                 tx_buf->tx_flags = 0;
4136                 tx_buf->next_to_watch = NULL;
4137                 dma_unmap_len_set(tx_buf, len, 0);
4138                 tx_desc->buffer_addr = 0;
4139                 tx_desc->cmd_type_offset_bsz = 0;
4140
4141                 /* move us past the eop_desc for start of next FD desc */
4142                 tx_buf++;
4143                 tx_desc++;
4144                 i++;
4145                 if (unlikely(!i)) {
4146                         i -= tx_ring->count;
4147                         tx_buf = tx_ring->tx_bi;
4148                         tx_desc = I40E_TX_DESC(tx_ring, 0);
4149                 }
4150
4151                 /* update budget accounting */
4152                 budget--;
4153         } while (likely(budget));
4154
4155         i += tx_ring->count;
4156         tx_ring->next_to_clean = i;
4157
4158         if (vsi->back->flags & I40E_FLAG_MSIX_ENABLED)
4159                 i40e_irq_dynamic_enable(vsi, tx_ring->q_vector->v_idx);
4160
4161         return budget > 0;
4162 }
4163
4164 /**
4165  * i40e_fdir_clean_ring - Interrupt Handler for FDIR SB ring
4166  * @irq: interrupt number
4167  * @data: pointer to a q_vector
4168  **/
4169 static irqreturn_t i40e_fdir_clean_ring(int irq, void *data)
4170 {
4171         struct i40e_q_vector *q_vector = data;
4172         struct i40e_vsi *vsi;
4173
4174         if (!q_vector->tx.ring)
4175                 return IRQ_HANDLED;
4176
4177         vsi = q_vector->tx.ring->vsi;
4178         i40e_clean_fdir_tx_irq(q_vector->tx.ring, vsi->work_limit);
4179
4180         return IRQ_HANDLED;
4181 }
4182
4183 /**
4184  * i40e_map_vector_to_qp - Assigns the queue pair to the vector
4185  * @vsi: the VSI being configured
4186  * @v_idx: vector index
4187  * @qp_idx: queue pair index
4188  **/
4189 static void i40e_map_vector_to_qp(struct i40e_vsi *vsi, int v_idx, int qp_idx)
4190 {
4191         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
4192         struct i40e_ring *tx_ring = vsi->tx_rings[qp_idx];
4193         struct i40e_ring *rx_ring = vsi->rx_rings[qp_idx];
4194
4195         tx_ring->q_vector = q_vector;
4196         tx_ring->next = q_vector->tx.ring;
4197         q_vector->tx.ring = tx_ring;
4198         q_vector->tx.count++;
4199
4200         /* Place XDP Tx ring in the same q_vector ring list as regular Tx */
4201         if (i40e_enabled_xdp_vsi(vsi)) {
4202                 struct i40e_ring *xdp_ring = vsi->xdp_rings[qp_idx];
4203
4204                 xdp_ring->q_vector = q_vector;
4205                 xdp_ring->next = q_vector->tx.ring;
4206                 q_vector->tx.ring = xdp_ring;
4207                 q_vector->tx.count++;
4208         }
4209
4210         rx_ring->q_vector = q_vector;
4211         rx_ring->next = q_vector->rx.ring;
4212         q_vector->rx.ring = rx_ring;
4213         q_vector->rx.count++;
4214 }
4215
4216 /**
4217  * i40e_vsi_map_rings_to_vectors - Maps descriptor rings to vectors
4218  * @vsi: the VSI being configured
4219  *
4220  * This function maps descriptor rings to the queue-specific vectors
4221  * we were allotted through the MSI-X enabling code.  Ideally, we'd have
4222  * one vector per queue pair, but on a constrained vector budget, we
4223  * group the queue pairs as "efficiently" as possible.
4224  **/
4225 static void i40e_vsi_map_rings_to_vectors(struct i40e_vsi *vsi)
4226 {
4227         int qp_remaining = vsi->num_queue_pairs;
4228         int q_vectors = vsi->num_q_vectors;
4229         int num_ringpairs;
4230         int v_start = 0;
4231         int qp_idx = 0;
4232
4233         /* If we don't have enough vectors for a 1-to-1 mapping, we'll have to
4234          * group them so there are multiple queues per vector.
4235          * It is also important to go through all the vectors available to be
4236          * sure that if we don't use all the vectors, that the remaining vectors
4237          * are cleared. This is especially important when decreasing the
4238          * number of queues in use.
4239          */
4240         for (; v_start < q_vectors; v_start++) {
4241                 struct i40e_q_vector *q_vector = vsi->q_vectors[v_start];
4242
4243                 num_ringpairs = DIV_ROUND_UP(qp_remaining, q_vectors - v_start);
4244
4245                 q_vector->num_ringpairs = num_ringpairs;
4246                 q_vector->reg_idx = q_vector->v_idx + vsi->base_vector - 1;
4247
4248                 q_vector->rx.count = 0;
4249                 q_vector->tx.count = 0;
4250                 q_vector->rx.ring = NULL;
4251                 q_vector->tx.ring = NULL;
4252
4253                 while (num_ringpairs--) {
4254                         i40e_map_vector_to_qp(vsi, v_start, qp_idx);
4255                         qp_idx++;
4256                         qp_remaining--;
4257                 }
4258         }
4259 }
4260
4261 /**
4262  * i40e_vsi_request_irq - Request IRQ from the OS
4263  * @vsi: the VSI being configured
4264  * @basename: name for the vector
4265  **/
4266 static int i40e_vsi_request_irq(struct i40e_vsi *vsi, char *basename)
4267 {
4268         struct i40e_pf *pf = vsi->back;
4269         int err;
4270
4271         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
4272                 err = i40e_vsi_request_irq_msix(vsi, basename);
4273         else if (pf->flags & I40E_FLAG_MSI_ENABLED)
4274                 err = request_irq(pf->pdev->irq, i40e_intr, 0,
4275                                   pf->int_name, pf);
4276         else
4277                 err = request_irq(pf->pdev->irq, i40e_intr, IRQF_SHARED,
4278                                   pf->int_name, pf);
4279
4280         if (err)
4281                 dev_info(&pf->pdev->dev, "request_irq failed, Error %d\n", err);
4282
4283         return err;
4284 }
4285
4286 #ifdef CONFIG_NET_POLL_CONTROLLER
4287 /**
4288  * i40e_netpoll - A Polling 'interrupt' handler
4289  * @netdev: network interface device structure
4290  *
4291  * This is used by netconsole to send skbs without having to re-enable
4292  * interrupts.  It's not called while the normal interrupt routine is executing.
4293  **/
4294 static void i40e_netpoll(struct net_device *netdev)
4295 {
4296         struct i40e_netdev_priv *np = netdev_priv(netdev);
4297         struct i40e_vsi *vsi = np->vsi;
4298         struct i40e_pf *pf = vsi->back;
4299         int i;
4300
4301         /* if interface is down do nothing */
4302         if (test_bit(__I40E_VSI_DOWN, vsi->state))
4303                 return;
4304
4305         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4306                 for (i = 0; i < vsi->num_q_vectors; i++)
4307                         i40e_msix_clean_rings(0, vsi->q_vectors[i]);
4308         } else {
4309                 i40e_intr(pf->pdev->irq, netdev);
4310         }
4311 }
4312 #endif
4313
4314 #define I40E_QTX_ENA_WAIT_COUNT 50
4315
4316 /**
4317  * i40e_pf_txq_wait - Wait for a PF's Tx queue to be enabled or disabled
4318  * @pf: the PF being configured
4319  * @pf_q: the PF queue
4320  * @enable: enable or disable state of the queue
4321  *
4322  * This routine will wait for the given Tx queue of the PF to reach the
4323  * enabled or disabled state.
4324  * Returns -ETIMEDOUT in case of failing to reach the requested state after
4325  * multiple retries; else will return 0 in case of success.
4326  **/
4327 static int i40e_pf_txq_wait(struct i40e_pf *pf, int pf_q, bool enable)
4328 {
4329         int i;
4330         u32 tx_reg;
4331
4332         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
4333                 tx_reg = rd32(&pf->hw, I40E_QTX_ENA(pf_q));
4334                 if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
4335                         break;
4336
4337                 usleep_range(10, 20);
4338         }
4339         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
4340                 return -ETIMEDOUT;
4341
4342         return 0;
4343 }
4344
4345 /**
4346  * i40e_control_tx_q - Start or stop a particular Tx queue
4347  * @pf: the PF structure
4348  * @pf_q: the PF queue to configure
4349  * @enable: start or stop the queue
4350  *
4351  * This function enables or disables a single queue. Note that any delay
4352  * required after the operation is expected to be handled by the caller of
4353  * this function.
4354  **/
4355 static void i40e_control_tx_q(struct i40e_pf *pf, int pf_q, bool enable)
4356 {
4357         struct i40e_hw *hw = &pf->hw;
4358         u32 tx_reg;
4359         int i;
4360
4361         /* warn the TX unit of coming changes */
4362         i40e_pre_tx_queue_cfg(&pf->hw, pf_q, enable);
4363         if (!enable)
4364                 usleep_range(10, 20);
4365
4366         for (i = 0; i < I40E_QTX_ENA_WAIT_COUNT; i++) {
4367                 tx_reg = rd32(hw, I40E_QTX_ENA(pf_q));
4368                 if (((tx_reg >> I40E_QTX_ENA_QENA_REQ_SHIFT) & 1) ==
4369                     ((tx_reg >> I40E_QTX_ENA_QENA_STAT_SHIFT) & 1))
4370                         break;
4371                 usleep_range(1000, 2000);
4372         }
4373
4374         /* Skip if the queue is already in the requested state */
4375         if (enable == !!(tx_reg & I40E_QTX_ENA_QENA_STAT_MASK))
4376                 return;
4377
4378         /* turn on/off the queue */
4379         if (enable) {
4380                 wr32(hw, I40E_QTX_HEAD(pf_q), 0);
4381                 tx_reg |= I40E_QTX_ENA_QENA_REQ_MASK;
4382         } else {
4383                 tx_reg &= ~I40E_QTX_ENA_QENA_REQ_MASK;
4384         }
4385
4386         wr32(hw, I40E_QTX_ENA(pf_q), tx_reg);
4387 }
4388
4389 /**
4390  * i40e_control_wait_tx_q - Start/stop Tx queue and wait for completion
4391  * @seid: VSI SEID
4392  * @pf: the PF structure
4393  * @pf_q: the PF queue to configure
4394  * @is_xdp: true if the queue is used for XDP
4395  * @enable: start or stop the queue
4396  **/
4397 int i40e_control_wait_tx_q(int seid, struct i40e_pf *pf, int pf_q,
4398                            bool is_xdp, bool enable)
4399 {
4400         int ret;
4401
4402         i40e_control_tx_q(pf, pf_q, enable);
4403
4404         /* wait for the change to finish */
4405         ret = i40e_pf_txq_wait(pf, pf_q, enable);
4406         if (ret) {
4407                 dev_info(&pf->pdev->dev,
4408                          "VSI seid %d %sTx ring %d %sable timeout\n",
4409                          seid, (is_xdp ? "XDP " : ""), pf_q,
4410                          (enable ? "en" : "dis"));
4411         }
4412
4413         return ret;
4414 }
4415
4416 /**
4417  * i40e_vsi_control_tx - Start or stop a VSI's rings
4418  * @vsi: the VSI being configured
4419  * @enable: start or stop the rings
4420  **/
4421 static int i40e_vsi_control_tx(struct i40e_vsi *vsi, bool enable)
4422 {
4423         struct i40e_pf *pf = vsi->back;
4424         int i, pf_q, ret = 0;
4425
4426         pf_q = vsi->base_queue;
4427         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4428                 ret = i40e_control_wait_tx_q(vsi->seid, pf,
4429                                              pf_q,
4430                                              false /*is xdp*/, enable);
4431                 if (ret)
4432                         break;
4433
4434                 if (!i40e_enabled_xdp_vsi(vsi))
4435                         continue;
4436
4437                 ret = i40e_control_wait_tx_q(vsi->seid, pf,
4438                                              pf_q + vsi->alloc_queue_pairs,
4439                                              true /*is xdp*/, enable);
4440                 if (ret)
4441                         break;
4442         }
4443         return ret;
4444 }
4445
4446 /**
4447  * i40e_pf_rxq_wait - Wait for a PF's Rx queue to be enabled or disabled
4448  * @pf: the PF being configured
4449  * @pf_q: the PF queue
4450  * @enable: enable or disable state of the queue
4451  *
4452  * This routine will wait for the given Rx queue of the PF to reach the
4453  * enabled or disabled state.
4454  * Returns -ETIMEDOUT in case of failing to reach the requested state after
4455  * multiple retries; else will return 0 in case of success.
4456  **/
4457 static int i40e_pf_rxq_wait(struct i40e_pf *pf, int pf_q, bool enable)
4458 {
4459         int i;
4460         u32 rx_reg;
4461
4462         for (i = 0; i < I40E_QUEUE_WAIT_RETRY_LIMIT; i++) {
4463                 rx_reg = rd32(&pf->hw, I40E_QRX_ENA(pf_q));
4464                 if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
4465                         break;
4466
4467                 usleep_range(10, 20);
4468         }
4469         if (i >= I40E_QUEUE_WAIT_RETRY_LIMIT)
4470                 return -ETIMEDOUT;
4471
4472         return 0;
4473 }
4474
4475 /**
4476  * i40e_control_rx_q - Start or stop a particular Rx queue
4477  * @pf: the PF structure
4478  * @pf_q: the PF queue to configure
4479  * @enable: start or stop the queue
4480  *
4481  * This function enables or disables a single queue. Note that
4482  * any delay required after the operation is expected to be
4483  * handled by the caller of this function.
4484  **/
4485 static void i40e_control_rx_q(struct i40e_pf *pf, int pf_q, bool enable)
4486 {
4487         struct i40e_hw *hw = &pf->hw;
4488         u32 rx_reg;
4489         int i;
4490
4491         for (i = 0; i < I40E_QTX_ENA_WAIT_COUNT; i++) {
4492                 rx_reg = rd32(hw, I40E_QRX_ENA(pf_q));
4493                 if (((rx_reg >> I40E_QRX_ENA_QENA_REQ_SHIFT) & 1) ==
4494                     ((rx_reg >> I40E_QRX_ENA_QENA_STAT_SHIFT) & 1))
4495                         break;
4496                 usleep_range(1000, 2000);
4497         }
4498
4499         /* Skip if the queue is already in the requested state */
4500         if (enable == !!(rx_reg & I40E_QRX_ENA_QENA_STAT_MASK))
4501                 return;
4502
4503         /* turn on/off the queue */
4504         if (enable)
4505                 rx_reg |= I40E_QRX_ENA_QENA_REQ_MASK;
4506         else
4507                 rx_reg &= ~I40E_QRX_ENA_QENA_REQ_MASK;
4508
4509         wr32(hw, I40E_QRX_ENA(pf_q), rx_reg);
4510 }
4511
4512 /**
4513  * i40e_control_wait_rx_q
4514  * @pf: the PF structure
4515  * @pf_q: queue being configured
4516  * @enable: start or stop the rings
4517  *
4518  * This function enables or disables a single queue along with waiting
4519  * for the change to finish. The caller of this function should handle
4520  * the delays needed in the case of disabling queues.
4521  **/
4522 int i40e_control_wait_rx_q(struct i40e_pf *pf, int pf_q, bool enable)
4523 {
4524         int ret = 0;
4525
4526         i40e_control_rx_q(pf, pf_q, enable);
4527
4528         /* wait for the change to finish */
4529         ret = i40e_pf_rxq_wait(pf, pf_q, enable);
4530         if (ret)
4531                 return ret;
4532
4533         return ret;
4534 }
4535
4536 /**
4537  * i40e_vsi_control_rx - Start or stop a VSI's rings
4538  * @vsi: the VSI being configured
4539  * @enable: start or stop the rings
4540  **/
4541 static int i40e_vsi_control_rx(struct i40e_vsi *vsi, bool enable)
4542 {
4543         struct i40e_pf *pf = vsi->back;
4544         int i, pf_q, ret = 0;
4545
4546         pf_q = vsi->base_queue;
4547         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4548                 ret = i40e_control_wait_rx_q(pf, pf_q, enable);
4549                 if (ret) {
4550                         dev_info(&pf->pdev->dev,
4551                                  "VSI seid %d Rx ring %d %sable timeout\n",
4552                                  vsi->seid, pf_q, (enable ? "en" : "dis"));
4553                         break;
4554                 }
4555         }
4556
4557         /* Due to HW errata, on Rx disable only, the register can indicate done
4558          * before it really is. Needs 50ms to be sure
4559          */
4560         if (!enable)
4561                 mdelay(50);
4562
4563         return ret;
4564 }
4565
4566 /**
4567  * i40e_vsi_start_rings - Start a VSI's rings
4568  * @vsi: the VSI being configured
4569  **/
4570 int i40e_vsi_start_rings(struct i40e_vsi *vsi)
4571 {
4572         int ret = 0;
4573
4574         /* do rx first for enable and last for disable */
4575         ret = i40e_vsi_control_rx(vsi, true);
4576         if (ret)
4577                 return ret;
4578         ret = i40e_vsi_control_tx(vsi, true);
4579
4580         return ret;
4581 }
4582
4583 /**
4584  * i40e_vsi_stop_rings - Stop a VSI's rings
4585  * @vsi: the VSI being configured
4586  **/
4587 void i40e_vsi_stop_rings(struct i40e_vsi *vsi)
4588 {
4589         /* When port TX is suspended, don't wait */
4590         if (test_bit(__I40E_PORT_SUSPENDED, vsi->back->state))
4591                 return i40e_vsi_stop_rings_no_wait(vsi);
4592
4593         /* do rx first for enable and last for disable
4594          * Ignore return value, we need to shutdown whatever we can
4595          */
4596         i40e_vsi_control_tx(vsi, false);
4597         i40e_vsi_control_rx(vsi, false);
4598 }
4599
4600 /**
4601  * i40e_vsi_stop_rings_no_wait - Stop a VSI's rings and do not delay
4602  * @vsi: the VSI being shutdown
4603  *
4604  * This function stops all the rings for a VSI but does not delay to verify
4605  * that rings have been disabled. It is expected that the caller is shutting
4606  * down multiple VSIs at once and will delay together for all the VSIs after
4607  * initiating the shutdown. This is particularly useful for shutting down lots
4608  * of VFs together. Otherwise, a large delay can be incurred while configuring
4609  * each VSI in serial.
4610  **/
4611 void i40e_vsi_stop_rings_no_wait(struct i40e_vsi *vsi)
4612 {
4613         struct i40e_pf *pf = vsi->back;
4614         int i, pf_q;
4615
4616         pf_q = vsi->base_queue;
4617         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4618                 i40e_control_tx_q(pf, pf_q, false);
4619                 i40e_control_rx_q(pf, pf_q, false);
4620         }
4621 }
4622
4623 /**
4624  * i40e_vsi_free_irq - Free the irq association with the OS
4625  * @vsi: the VSI being configured
4626  **/
4627 static void i40e_vsi_free_irq(struct i40e_vsi *vsi)
4628 {
4629         struct i40e_pf *pf = vsi->back;
4630         struct i40e_hw *hw = &pf->hw;
4631         int base = vsi->base_vector;
4632         u32 val, qp;
4633         int i;
4634
4635         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4636                 if (!vsi->q_vectors)
4637                         return;
4638
4639                 if (!vsi->irqs_ready)
4640                         return;
4641
4642                 vsi->irqs_ready = false;
4643                 for (i = 0; i < vsi->num_q_vectors; i++) {
4644                         int irq_num;
4645                         u16 vector;
4646
4647                         vector = i + base;
4648                         irq_num = pf->msix_entries[vector].vector;
4649
4650                         /* free only the irqs that were actually requested */
4651                         if (!vsi->q_vectors[i] ||
4652                             !vsi->q_vectors[i]->num_ringpairs)
4653                                 continue;
4654
4655                         /* clear the affinity notifier in the IRQ descriptor */
4656                         irq_set_affinity_notifier(irq_num, NULL);
4657                         /* remove our suggested affinity mask for this IRQ */
4658                         irq_set_affinity_hint(irq_num, NULL);
4659                         synchronize_irq(irq_num);
4660                         free_irq(irq_num, vsi->q_vectors[i]);
4661
4662                         /* Tear down the interrupt queue link list
4663                          *
4664                          * We know that they come in pairs and always
4665                          * the Rx first, then the Tx.  To clear the
4666                          * link list, stick the EOL value into the
4667                          * next_q field of the registers.
4668                          */
4669                         val = rd32(hw, I40E_PFINT_LNKLSTN(vector - 1));
4670                         qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4671                                 >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4672                         val |= I40E_QUEUE_END_OF_LIST
4673                                 << I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4674                         wr32(hw, I40E_PFINT_LNKLSTN(vector - 1), val);
4675
4676                         while (qp != I40E_QUEUE_END_OF_LIST) {
4677                                 u32 next;
4678
4679                                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4680
4681                                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4682                                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4683                                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4684                                          I40E_QINT_RQCTL_INTEVENT_MASK);
4685
4686                                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4687                                          I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4688
4689                                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4690
4691                                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4692
4693                                 next = (val & I40E_QINT_TQCTL_NEXTQ_INDX_MASK)
4694                                         >> I40E_QINT_TQCTL_NEXTQ_INDX_SHIFT;
4695
4696                                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4697                                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4698                                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4699                                          I40E_QINT_TQCTL_INTEVENT_MASK);
4700
4701                                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4702                                          I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4703
4704                                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4705                                 qp = next;
4706                         }
4707                 }
4708         } else {
4709                 free_irq(pf->pdev->irq, pf);
4710
4711                 val = rd32(hw, I40E_PFINT_LNKLST0);
4712                 qp = (val & I40E_PFINT_LNKLSTN_FIRSTQ_INDX_MASK)
4713                         >> I40E_PFINT_LNKLSTN_FIRSTQ_INDX_SHIFT;
4714                 val |= I40E_QUEUE_END_OF_LIST
4715                         << I40E_PFINT_LNKLST0_FIRSTQ_INDX_SHIFT;
4716                 wr32(hw, I40E_PFINT_LNKLST0, val);
4717
4718                 val = rd32(hw, I40E_QINT_RQCTL(qp));
4719                 val &= ~(I40E_QINT_RQCTL_MSIX_INDX_MASK  |
4720                          I40E_QINT_RQCTL_MSIX0_INDX_MASK |
4721                          I40E_QINT_RQCTL_CAUSE_ENA_MASK  |
4722                          I40E_QINT_RQCTL_INTEVENT_MASK);
4723
4724                 val |= (I40E_QINT_RQCTL_ITR_INDX_MASK |
4725                         I40E_QINT_RQCTL_NEXTQ_INDX_MASK);
4726
4727                 wr32(hw, I40E_QINT_RQCTL(qp), val);
4728
4729                 val = rd32(hw, I40E_QINT_TQCTL(qp));
4730
4731                 val &= ~(I40E_QINT_TQCTL_MSIX_INDX_MASK  |
4732                          I40E_QINT_TQCTL_MSIX0_INDX_MASK |
4733                          I40E_QINT_TQCTL_CAUSE_ENA_MASK  |
4734                          I40E_QINT_TQCTL_INTEVENT_MASK);
4735
4736                 val |= (I40E_QINT_TQCTL_ITR_INDX_MASK |
4737                         I40E_QINT_TQCTL_NEXTQ_INDX_MASK);
4738
4739                 wr32(hw, I40E_QINT_TQCTL(qp), val);
4740         }
4741 }
4742
4743 /**
4744  * i40e_free_q_vector - Free memory allocated for specific interrupt vector
4745  * @vsi: the VSI being configured
4746  * @v_idx: Index of vector to be freed
4747  *
4748  * This function frees the memory allocated to the q_vector.  In addition if
4749  * NAPI is enabled it will delete any references to the NAPI struct prior
4750  * to freeing the q_vector.
4751  **/
4752 static void i40e_free_q_vector(struct i40e_vsi *vsi, int v_idx)
4753 {
4754         struct i40e_q_vector *q_vector = vsi->q_vectors[v_idx];
4755         struct i40e_ring *ring;
4756
4757         if (!q_vector)
4758                 return;
4759
4760         /* disassociate q_vector from rings */
4761         i40e_for_each_ring(ring, q_vector->tx)
4762                 ring->q_vector = NULL;
4763
4764         i40e_for_each_ring(ring, q_vector->rx)
4765                 ring->q_vector = NULL;
4766
4767         /* only VSI w/ an associated netdev is set up w/ NAPI */
4768         if (vsi->netdev)
4769                 netif_napi_del(&q_vector->napi);
4770
4771         vsi->q_vectors[v_idx] = NULL;
4772
4773         kfree_rcu(q_vector, rcu);
4774 }
4775
4776 /**
4777  * i40e_vsi_free_q_vectors - Free memory allocated for interrupt vectors
4778  * @vsi: the VSI being un-configured
4779  *
4780  * This frees the memory allocated to the q_vectors and
4781  * deletes references to the NAPI struct.
4782  **/
4783 static void i40e_vsi_free_q_vectors(struct i40e_vsi *vsi)
4784 {
4785         int v_idx;
4786
4787         for (v_idx = 0; v_idx < vsi->num_q_vectors; v_idx++)
4788                 i40e_free_q_vector(vsi, v_idx);
4789 }
4790
4791 /**
4792  * i40e_reset_interrupt_capability - Disable interrupt setup in OS
4793  * @pf: board private structure
4794  **/
4795 static void i40e_reset_interrupt_capability(struct i40e_pf *pf)
4796 {
4797         /* If we're in Legacy mode, the interrupt was cleaned in vsi_close */
4798         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
4799                 pci_disable_msix(pf->pdev);
4800                 kfree(pf->msix_entries);
4801                 pf->msix_entries = NULL;
4802                 kfree(pf->irq_pile);
4803                 pf->irq_pile = NULL;
4804         } else if (pf->flags & I40E_FLAG_MSI_ENABLED) {
4805                 pci_disable_msi(pf->pdev);
4806         }
4807         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
4808 }
4809
4810 /**
4811  * i40e_clear_interrupt_scheme - Clear the current interrupt scheme settings
4812  * @pf: board private structure
4813  *
4814  * We go through and clear interrupt specific resources and reset the structure
4815  * to pre-load conditions
4816  **/
4817 static void i40e_clear_interrupt_scheme(struct i40e_pf *pf)
4818 {
4819         int i;
4820
4821         i40e_free_misc_vector(pf);
4822
4823         i40e_put_lump(pf->irq_pile, pf->iwarp_base_vector,
4824                       I40E_IWARP_IRQ_PILE_ID);
4825
4826         i40e_put_lump(pf->irq_pile, 0, I40E_PILE_VALID_BIT-1);
4827         for (i = 0; i < pf->num_alloc_vsi; i++)
4828                 if (pf->vsi[i])
4829                         i40e_vsi_free_q_vectors(pf->vsi[i]);
4830         i40e_reset_interrupt_capability(pf);
4831 }
4832
4833 /**
4834  * i40e_napi_enable_all - Enable NAPI for all q_vectors in the VSI
4835  * @vsi: the VSI being configured
4836  **/
4837 static void i40e_napi_enable_all(struct i40e_vsi *vsi)
4838 {
4839         int q_idx;
4840
4841         if (!vsi->netdev)
4842                 return;
4843
4844         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++) {
4845                 struct i40e_q_vector *q_vector = vsi->q_vectors[q_idx];
4846
4847                 if (q_vector->rx.ring || q_vector->tx.ring)
4848                         napi_enable(&q_vector->napi);
4849         }
4850 }
4851
4852 /**
4853  * i40e_napi_disable_all - Disable NAPI for all q_vectors in the VSI
4854  * @vsi: the VSI being configured
4855  **/
4856 static void i40e_napi_disable_all(struct i40e_vsi *vsi)
4857 {
4858         int q_idx;
4859
4860         if (!vsi->netdev)
4861                 return;
4862
4863         for (q_idx = 0; q_idx < vsi->num_q_vectors; q_idx++) {
4864                 struct i40e_q_vector *q_vector = vsi->q_vectors[q_idx];
4865
4866                 if (q_vector->rx.ring || q_vector->tx.ring)
4867                         napi_disable(&q_vector->napi);
4868         }
4869 }
4870
4871 /**
4872  * i40e_vsi_close - Shut down a VSI
4873  * @vsi: the vsi to be quelled
4874  **/
4875 static void i40e_vsi_close(struct i40e_vsi *vsi)
4876 {
4877         struct i40e_pf *pf = vsi->back;
4878         if (!test_and_set_bit(__I40E_VSI_DOWN, vsi->state))
4879                 i40e_down(vsi);
4880         i40e_vsi_free_irq(vsi);
4881         i40e_vsi_free_tx_resources(vsi);
4882         i40e_vsi_free_rx_resources(vsi);
4883         vsi->current_netdev_flags = 0;
4884         set_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state);
4885         if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state))
4886                 set_bit(__I40E_CLIENT_RESET, pf->state);
4887 }
4888
4889 /**
4890  * i40e_quiesce_vsi - Pause a given VSI
4891  * @vsi: the VSI being paused
4892  **/
4893 static void i40e_quiesce_vsi(struct i40e_vsi *vsi)
4894 {
4895         if (test_bit(__I40E_VSI_DOWN, vsi->state))
4896                 return;
4897
4898         set_bit(__I40E_VSI_NEEDS_RESTART, vsi->state);
4899         if (vsi->netdev && netif_running(vsi->netdev))
4900                 vsi->netdev->netdev_ops->ndo_stop(vsi->netdev);
4901         else
4902                 i40e_vsi_close(vsi);
4903 }
4904
4905 /**
4906  * i40e_unquiesce_vsi - Resume a given VSI
4907  * @vsi: the VSI being resumed
4908  **/
4909 static void i40e_unquiesce_vsi(struct i40e_vsi *vsi)
4910 {
4911         if (!test_and_clear_bit(__I40E_VSI_NEEDS_RESTART, vsi->state))
4912                 return;
4913
4914         if (vsi->netdev && netif_running(vsi->netdev))
4915                 vsi->netdev->netdev_ops->ndo_open(vsi->netdev);
4916         else
4917                 i40e_vsi_open(vsi);   /* this clears the DOWN bit */
4918 }
4919
4920 /**
4921  * i40e_pf_quiesce_all_vsi - Pause all VSIs on a PF
4922  * @pf: the PF
4923  **/
4924 static void i40e_pf_quiesce_all_vsi(struct i40e_pf *pf)
4925 {
4926         int v;
4927
4928         for (v = 0; v < pf->num_alloc_vsi; v++) {
4929                 if (pf->vsi[v])
4930                         i40e_quiesce_vsi(pf->vsi[v]);
4931         }
4932 }
4933
4934 /**
4935  * i40e_pf_unquiesce_all_vsi - Resume all VSIs on a PF
4936  * @pf: the PF
4937  **/
4938 static void i40e_pf_unquiesce_all_vsi(struct i40e_pf *pf)
4939 {
4940         int v;
4941
4942         for (v = 0; v < pf->num_alloc_vsi; v++) {
4943                 if (pf->vsi[v])
4944                         i40e_unquiesce_vsi(pf->vsi[v]);
4945         }
4946 }
4947
4948 /**
4949  * i40e_vsi_wait_queues_disabled - Wait for VSI's queues to be disabled
4950  * @vsi: the VSI being configured
4951  *
4952  * Wait until all queues on a given VSI have been disabled.
4953  **/
4954 int i40e_vsi_wait_queues_disabled(struct i40e_vsi *vsi)
4955 {
4956         struct i40e_pf *pf = vsi->back;
4957         int i, pf_q, ret;
4958
4959         pf_q = vsi->base_queue;
4960         for (i = 0; i < vsi->num_queue_pairs; i++, pf_q++) {
4961                 /* Check and wait for the Tx queue */
4962                 ret = i40e_pf_txq_wait(pf, pf_q, false);
4963                 if (ret) {
4964                         dev_info(&pf->pdev->dev,
4965                                  "VSI seid %d Tx ring %d disable timeout\n",
4966                                  vsi->seid, pf_q);
4967                         return ret;
4968                 }
4969
4970                 if (!i40e_enabled_xdp_vsi(vsi))
4971                         goto wait_rx;
4972
4973                 /* Check and wait for the XDP Tx queue */
4974                 ret = i40e_pf_txq_wait(pf, pf_q + vsi->alloc_queue_pairs,
4975                                        false);
4976                 if (ret) {
4977                         dev_info(&pf->pdev->dev,
4978                                  "VSI seid %d XDP Tx ring %d disable timeout\n",
4979                                  vsi->seid, pf_q);
4980                         return ret;
4981                 }
4982 wait_rx:
4983                 /* Check and wait for the Rx queue */
4984                 ret = i40e_pf_rxq_wait(pf, pf_q, false);
4985                 if (ret) {
4986                         dev_info(&pf->pdev->dev,
4987                                  "VSI seid %d Rx ring %d disable timeout\n",
4988                                  vsi->seid, pf_q);
4989                         return ret;
4990                 }
4991         }
4992
4993         return 0;
4994 }
4995
4996 #ifdef CONFIG_I40E_DCB
4997 /**
4998  * i40e_pf_wait_queues_disabled - Wait for all queues of PF VSIs to be disabled
4999  * @pf: the PF
5000  *
5001  * This function waits for the queues to be in disabled state for all the
5002  * VSIs that are managed by this PF.
5003  **/
5004 static int i40e_pf_wait_queues_disabled(struct i40e_pf *pf)
5005 {
5006         int v, ret = 0;
5007
5008         for (v = 0; v < pf->hw.func_caps.num_vsis; v++) {
5009                 if (pf->vsi[v]) {
5010                         ret = i40e_vsi_wait_queues_disabled(pf->vsi[v]);
5011                         if (ret)
5012                                 break;
5013                 }
5014         }
5015
5016         return ret;
5017 }
5018
5019 #endif
5020
5021 /**
5022  * i40e_get_iscsi_tc_map - Return TC map for iSCSI APP
5023  * @pf: pointer to PF
5024  *
5025  * Get TC map for ISCSI PF type that will include iSCSI TC
5026  * and LAN TC.
5027  **/
5028 static u8 i40e_get_iscsi_tc_map(struct i40e_pf *pf)
5029 {
5030         struct i40e_dcb_app_priority_table app;
5031         struct i40e_hw *hw = &pf->hw;
5032         u8 enabled_tc = 1; /* TC0 is always enabled */
5033         u8 tc, i;
5034         /* Get the iSCSI APP TLV */
5035         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
5036
5037         for (i = 0; i < dcbcfg->numapps; i++) {
5038                 app = dcbcfg->app[i];
5039                 if (app.selector == I40E_APP_SEL_TCPIP &&
5040                     app.protocolid == I40E_APP_PROTOID_ISCSI) {
5041                         tc = dcbcfg->etscfg.prioritytable[app.priority];
5042                         enabled_tc |= BIT(tc);
5043                         break;
5044                 }
5045         }
5046
5047         return enabled_tc;
5048 }
5049
5050 /**
5051  * i40e_dcb_get_num_tc -  Get the number of TCs from DCBx config
5052  * @dcbcfg: the corresponding DCBx configuration structure
5053  *
5054  * Return the number of TCs from given DCBx configuration
5055  **/
5056 static u8 i40e_dcb_get_num_tc(struct i40e_dcbx_config *dcbcfg)
5057 {
5058         int i, tc_unused = 0;
5059         u8 num_tc = 0;
5060         u8 ret = 0;
5061
5062         /* Scan the ETS Config Priority Table to find
5063          * traffic class enabled for a given priority
5064          * and create a bitmask of enabled TCs
5065          */
5066         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++)
5067                 num_tc |= BIT(dcbcfg->etscfg.prioritytable[i]);
5068
5069         /* Now scan the bitmask to check for
5070          * contiguous TCs starting with TC0
5071          */
5072         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
5073                 if (num_tc & BIT(i)) {
5074                         if (!tc_unused) {
5075                                 ret++;
5076                         } else {
5077                                 pr_err("Non-contiguous TC - Disabling DCB\n");
5078                                 return 1;
5079                         }
5080                 } else {
5081                         tc_unused = 1;
5082                 }
5083         }
5084
5085         /* There is always at least TC0 */
5086         if (!ret)
5087                 ret = 1;
5088
5089         return ret;
5090 }
5091
5092 /**
5093  * i40e_dcb_get_enabled_tc - Get enabled traffic classes
5094  * @dcbcfg: the corresponding DCBx configuration structure
5095  *
5096  * Query the current DCB configuration and return the number of
5097  * traffic classes enabled from the given DCBX config
5098  **/
5099 static u8 i40e_dcb_get_enabled_tc(struct i40e_dcbx_config *dcbcfg)
5100 {
5101         u8 num_tc = i40e_dcb_get_num_tc(dcbcfg);
5102         u8 enabled_tc = 1;
5103         u8 i;
5104
5105         for (i = 0; i < num_tc; i++)
5106                 enabled_tc |= BIT(i);
5107
5108         return enabled_tc;
5109 }
5110
5111 /**
5112  * i40e_mqprio_get_enabled_tc - Get enabled traffic classes
5113  * @pf: PF being queried
5114  *
5115  * Query the current MQPRIO configuration and return the number of
5116  * traffic classes enabled.
5117  **/
5118 static u8 i40e_mqprio_get_enabled_tc(struct i40e_pf *pf)
5119 {
5120         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
5121         u8 num_tc = vsi->mqprio_qopt.qopt.num_tc;
5122         u8 enabled_tc = 1, i;
5123
5124         for (i = 1; i < num_tc; i++)
5125                 enabled_tc |= BIT(i);
5126         return enabled_tc;
5127 }
5128
5129 /**
5130  * i40e_pf_get_num_tc - Get enabled traffic classes for PF
5131  * @pf: PF being queried
5132  *
5133  * Return number of traffic classes enabled for the given PF
5134  **/
5135 static u8 i40e_pf_get_num_tc(struct i40e_pf *pf)
5136 {
5137         struct i40e_hw *hw = &pf->hw;
5138         u8 i, enabled_tc = 1;
5139         u8 num_tc = 0;
5140         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
5141
5142         if (pf->flags & I40E_FLAG_TC_MQPRIO)
5143                 return pf->vsi[pf->lan_vsi]->mqprio_qopt.qopt.num_tc;
5144
5145         /* If neither MQPRIO nor DCB is enabled, then always use single TC */
5146         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
5147                 return 1;
5148
5149         /* SFP mode will be enabled for all TCs on port */
5150         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
5151                 return i40e_dcb_get_num_tc(dcbcfg);
5152
5153         /* MFP mode return count of enabled TCs for this PF */
5154         if (pf->hw.func_caps.iscsi)
5155                 enabled_tc =  i40e_get_iscsi_tc_map(pf);
5156         else
5157                 return 1; /* Only TC0 */
5158
5159         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
5160                 if (enabled_tc & BIT(i))
5161                         num_tc++;
5162         }
5163         return num_tc;
5164 }
5165
5166 /**
5167  * i40e_pf_get_pf_tc_map - Get bitmap for enabled traffic classes
5168  * @pf: PF being queried
5169  *
5170  * Return a bitmap for enabled traffic classes for this PF.
5171  **/
5172 static u8 i40e_pf_get_tc_map(struct i40e_pf *pf)
5173 {
5174         if (pf->flags & I40E_FLAG_TC_MQPRIO)
5175                 return i40e_mqprio_get_enabled_tc(pf);
5176
5177         /* If neither MQPRIO nor DCB is enabled for this PF then just return
5178          * default TC
5179          */
5180         if (!(pf->flags & I40E_FLAG_DCB_ENABLED))
5181                 return I40E_DEFAULT_TRAFFIC_CLASS;
5182
5183         /* SFP mode we want PF to be enabled for all TCs */
5184         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
5185                 return i40e_dcb_get_enabled_tc(&pf->hw.local_dcbx_config);
5186
5187         /* MFP enabled and iSCSI PF type */
5188         if (pf->hw.func_caps.iscsi)
5189                 return i40e_get_iscsi_tc_map(pf);
5190         else
5191                 return I40E_DEFAULT_TRAFFIC_CLASS;
5192 }
5193
5194 /**
5195  * i40e_vsi_get_bw_info - Query VSI BW Information
5196  * @vsi: the VSI being queried
5197  *
5198  * Returns 0 on success, negative value on failure
5199  **/
5200 static int i40e_vsi_get_bw_info(struct i40e_vsi *vsi)
5201 {
5202         struct i40e_aqc_query_vsi_ets_sla_config_resp bw_ets_config = {0};
5203         struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
5204         struct i40e_pf *pf = vsi->back;
5205         struct i40e_hw *hw = &pf->hw;
5206         i40e_status ret;
5207         u32 tc_bw_max;
5208         int i;
5209
5210         /* Get the VSI level BW configuration */
5211         ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid, &bw_config, NULL);
5212         if (ret) {
5213                 dev_info(&pf->pdev->dev,
5214                          "couldn't get PF vsi bw config, err %s aq_err %s\n",
5215                          i40e_stat_str(&pf->hw, ret),
5216                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5217                 return -EINVAL;
5218         }
5219
5220         /* Get the VSI level BW configuration per TC */
5221         ret = i40e_aq_query_vsi_ets_sla_config(hw, vsi->seid, &bw_ets_config,
5222                                                NULL);
5223         if (ret) {
5224                 dev_info(&pf->pdev->dev,
5225                          "couldn't get PF vsi ets bw config, err %s aq_err %s\n",
5226                          i40e_stat_str(&pf->hw, ret),
5227                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5228                 return -EINVAL;
5229         }
5230
5231         if (bw_config.tc_valid_bits != bw_ets_config.tc_valid_bits) {
5232                 dev_info(&pf->pdev->dev,
5233                          "Enabled TCs mismatch from querying VSI BW info 0x%08x 0x%08x\n",
5234                          bw_config.tc_valid_bits,
5235                          bw_ets_config.tc_valid_bits);
5236                 /* Still continuing */
5237         }
5238
5239         vsi->bw_limit = le16_to_cpu(bw_config.port_bw_limit);
5240         vsi->bw_max_quanta = bw_config.max_bw;
5241         tc_bw_max = le16_to_cpu(bw_ets_config.tc_bw_max[0]) |
5242                     (le16_to_cpu(bw_ets_config.tc_bw_max[1]) << 16);
5243         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
5244                 vsi->bw_ets_share_credits[i] = bw_ets_config.share_credits[i];
5245                 vsi->bw_ets_limit_credits[i] =
5246                                         le16_to_cpu(bw_ets_config.credits[i]);
5247                 /* 3 bits out of 4 for each TC */
5248                 vsi->bw_ets_max_quanta[i] = (u8)((tc_bw_max >> (i*4)) & 0x7);
5249         }
5250
5251         return 0;
5252 }
5253
5254 /**
5255  * i40e_vsi_configure_bw_alloc - Configure VSI BW allocation per TC
5256  * @vsi: the VSI being configured
5257  * @enabled_tc: TC bitmap
5258  * @bw_share: BW shared credits per TC
5259  *
5260  * Returns 0 on success, negative value on failure
5261  **/
5262 static int i40e_vsi_configure_bw_alloc(struct i40e_vsi *vsi, u8 enabled_tc,
5263                                        u8 *bw_share)
5264 {
5265         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
5266         struct i40e_pf *pf = vsi->back;
5267         i40e_status ret;
5268         int i;
5269
5270         /* There is no need to reset BW when mqprio mode is on.  */
5271         if (pf->flags & I40E_FLAG_TC_MQPRIO)
5272                 return 0;
5273         if (!vsi->mqprio_qopt.qopt.hw && !(pf->flags & I40E_FLAG_DCB_ENABLED)) {
5274                 ret = i40e_set_bw_limit(vsi, vsi->seid, 0);
5275                 if (ret)
5276                         dev_info(&pf->pdev->dev,
5277                                  "Failed to reset tx rate for vsi->seid %u\n",
5278                                  vsi->seid);
5279                 return ret;
5280         }
5281         bw_data.tc_valid_bits = enabled_tc;
5282         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
5283                 bw_data.tc_bw_credits[i] = bw_share[i];
5284
5285         ret = i40e_aq_config_vsi_tc_bw(&pf->hw, vsi->seid, &bw_data, NULL);
5286         if (ret) {
5287                 dev_info(&pf->pdev->dev,
5288                          "AQ command Config VSI BW allocation per TC failed = %d\n",
5289                          pf->hw.aq.asq_last_status);
5290                 return -EINVAL;
5291         }
5292
5293         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
5294                 vsi->info.qs_handle[i] = bw_data.qs_handles[i];
5295
5296         return 0;
5297 }
5298
5299 /**
5300  * i40e_vsi_config_netdev_tc - Setup the netdev TC configuration
5301  * @vsi: the VSI being configured
5302  * @enabled_tc: TC map to be enabled
5303  *
5304  **/
5305 static void i40e_vsi_config_netdev_tc(struct i40e_vsi *vsi, u8 enabled_tc)
5306 {
5307         struct net_device *netdev = vsi->netdev;
5308         struct i40e_pf *pf = vsi->back;
5309         struct i40e_hw *hw = &pf->hw;
5310         u8 netdev_tc = 0;
5311         int i;
5312         struct i40e_dcbx_config *dcbcfg = &hw->local_dcbx_config;
5313
5314         if (!netdev)
5315                 return;
5316
5317         if (!enabled_tc) {
5318                 netdev_reset_tc(netdev);
5319                 return;
5320         }
5321
5322         /* Set up actual enabled TCs on the VSI */
5323         if (netdev_set_num_tc(netdev, vsi->tc_config.numtc))
5324                 return;
5325
5326         /* set per TC queues for the VSI */
5327         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
5328                 /* Only set TC queues for enabled tcs
5329                  *
5330                  * e.g. For a VSI that has TC0 and TC3 enabled the
5331                  * enabled_tc bitmap would be 0x00001001; the driver
5332                  * will set the numtc for netdev as 2 that will be
5333                  * referenced by the netdev layer as TC 0 and 1.
5334                  */
5335                 if (vsi->tc_config.enabled_tc & BIT(i))
5336                         netdev_set_tc_queue(netdev,
5337                                         vsi->tc_config.tc_info[i].netdev_tc,
5338                                         vsi->tc_config.tc_info[i].qcount,
5339                                         vsi->tc_config.tc_info[i].qoffset);
5340         }
5341
5342         if (pf->flags & I40E_FLAG_TC_MQPRIO)
5343                 return;
5344
5345         /* Assign UP2TC map for the VSI */
5346         for (i = 0; i < I40E_MAX_USER_PRIORITY; i++) {
5347                 /* Get the actual TC# for the UP */
5348                 u8 ets_tc = dcbcfg->etscfg.prioritytable[i];
5349                 /* Get the mapped netdev TC# for the UP */
5350                 netdev_tc =  vsi->tc_config.tc_info[ets_tc].netdev_tc;
5351                 netdev_set_prio_tc_map(netdev, i, netdev_tc);
5352         }
5353 }
5354
5355 /**
5356  * i40e_vsi_update_queue_map - Update our copy of VSi info with new queue map
5357  * @vsi: the VSI being configured
5358  * @ctxt: the ctxt buffer returned from AQ VSI update param command
5359  **/
5360 static void i40e_vsi_update_queue_map(struct i40e_vsi *vsi,
5361                                       struct i40e_vsi_context *ctxt)
5362 {
5363         /* copy just the sections touched not the entire info
5364          * since not all sections are valid as returned by
5365          * update vsi params
5366          */
5367         vsi->info.mapping_flags = ctxt->info.mapping_flags;
5368         memcpy(&vsi->info.queue_mapping,
5369                &ctxt->info.queue_mapping, sizeof(vsi->info.queue_mapping));
5370         memcpy(&vsi->info.tc_mapping, ctxt->info.tc_mapping,
5371                sizeof(vsi->info.tc_mapping));
5372 }
5373
5374 /**
5375  * i40e_vsi_config_tc - Configure VSI Tx Scheduler for given TC map
5376  * @vsi: VSI to be configured
5377  * @enabled_tc: TC bitmap
5378  *
5379  * This configures a particular VSI for TCs that are mapped to the
5380  * given TC bitmap. It uses default bandwidth share for TCs across
5381  * VSIs to configure TC for a particular VSI.
5382  *
5383  * NOTE:
5384  * It is expected that the VSI queues have been quisced before calling
5385  * this function.
5386  **/
5387 static int i40e_vsi_config_tc(struct i40e_vsi *vsi, u8 enabled_tc)
5388 {
5389         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
5390         struct i40e_pf *pf = vsi->back;
5391         struct i40e_hw *hw = &pf->hw;
5392         struct i40e_vsi_context ctxt;
5393         int ret = 0;
5394         int i;
5395
5396         /* Check if enabled_tc is same as existing or new TCs */
5397         if (vsi->tc_config.enabled_tc == enabled_tc &&
5398             vsi->mqprio_qopt.mode != TC_MQPRIO_MODE_CHANNEL)
5399                 return ret;
5400
5401         /* Enable ETS TCs with equal BW Share for now across all VSIs */
5402         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
5403                 if (enabled_tc & BIT(i))
5404                         bw_share[i] = 1;
5405         }
5406
5407         ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
5408         if (ret) {
5409                 struct i40e_aqc_query_vsi_bw_config_resp bw_config = {0};
5410
5411                 dev_info(&pf->pdev->dev,
5412                          "Failed configuring TC map %d for VSI %d\n",
5413                          enabled_tc, vsi->seid);
5414                 ret = i40e_aq_query_vsi_bw_config(hw, vsi->seid,
5415                                                   &bw_config, NULL);
5416                 if (ret) {
5417                         dev_info(&pf->pdev->dev,
5418                                  "Failed querying vsi bw info, err %s aq_err %s\n",
5419                                  i40e_stat_str(hw, ret),
5420                                  i40e_aq_str(hw, hw->aq.asq_last_status));
5421                         goto out;
5422                 }
5423                 if ((bw_config.tc_valid_bits & enabled_tc) != enabled_tc) {
5424                         u8 valid_tc = bw_config.tc_valid_bits & enabled_tc;
5425
5426                         if (!valid_tc)
5427                                 valid_tc = bw_config.tc_valid_bits;
5428                         /* Always enable TC0, no matter what */
5429                         valid_tc |= 1;
5430                         dev_info(&pf->pdev->dev,
5431                                  "Requested tc 0x%x, but FW reports 0x%x as valid. Attempting to use 0x%x.\n",
5432                                  enabled_tc, bw_config.tc_valid_bits, valid_tc);
5433                         enabled_tc = valid_tc;
5434                 }
5435
5436                 ret = i40e_vsi_configure_bw_alloc(vsi, enabled_tc, bw_share);
5437                 if (ret) {
5438                         dev_err(&pf->pdev->dev,
5439                                 "Unable to  configure TC map %d for VSI %d\n",
5440                                 enabled_tc, vsi->seid);
5441                         goto out;
5442                 }
5443         }
5444
5445         /* Update Queue Pairs Mapping for currently enabled UPs */
5446         ctxt.seid = vsi->seid;
5447         ctxt.pf_num = vsi->back->hw.pf_id;
5448         ctxt.vf_num = 0;
5449         ctxt.uplink_seid = vsi->uplink_seid;
5450         ctxt.info = vsi->info;
5451         if (vsi->back->flags & I40E_FLAG_TC_MQPRIO) {
5452                 ret = i40e_vsi_setup_queue_map_mqprio(vsi, &ctxt, enabled_tc);
5453                 if (ret)
5454                         goto out;
5455         } else {
5456                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
5457         }
5458
5459         /* On destroying the qdisc, reset vsi->rss_size, as number of enabled
5460          * queues changed.
5461          */
5462         if (!vsi->mqprio_qopt.qopt.hw && vsi->reconfig_rss) {
5463                 vsi->rss_size = min_t(int, vsi->back->alloc_rss_size,
5464                                       vsi->num_queue_pairs);
5465                 ret = i40e_vsi_config_rss(vsi);
5466                 if (ret) {
5467                         dev_info(&vsi->back->pdev->dev,
5468                                  "Failed to reconfig rss for num_queues\n");
5469                         return ret;
5470                 }
5471                 vsi->reconfig_rss = false;
5472         }
5473         if (vsi->back->flags & I40E_FLAG_IWARP_ENABLED) {
5474                 ctxt.info.valid_sections |=
5475                                 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
5476                 ctxt.info.queueing_opt_flags |= I40E_AQ_VSI_QUE_OPT_TCP_ENA;
5477         }
5478
5479         /* Update the VSI after updating the VSI queue-mapping
5480          * information
5481          */
5482         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
5483         if (ret) {
5484                 dev_info(&pf->pdev->dev,
5485                          "Update vsi tc config failed, err %s aq_err %s\n",
5486                          i40e_stat_str(hw, ret),
5487                          i40e_aq_str(hw, hw->aq.asq_last_status));
5488                 goto out;
5489         }
5490         /* update the local VSI info with updated queue map */
5491         i40e_vsi_update_queue_map(vsi, &ctxt);
5492         vsi->info.valid_sections = 0;
5493
5494         /* Update current VSI BW information */
5495         ret = i40e_vsi_get_bw_info(vsi);
5496         if (ret) {
5497                 dev_info(&pf->pdev->dev,
5498                          "Failed updating vsi bw info, err %s aq_err %s\n",
5499                          i40e_stat_str(hw, ret),
5500                          i40e_aq_str(hw, hw->aq.asq_last_status));
5501                 goto out;
5502         }
5503
5504         /* Update the netdev TC setup */
5505         i40e_vsi_config_netdev_tc(vsi, enabled_tc);
5506 out:
5507         return ret;
5508 }
5509
5510 /**
5511  * i40e_get_link_speed - Returns link speed for the interface
5512  * @vsi: VSI to be configured
5513  *
5514  **/
5515 static int i40e_get_link_speed(struct i40e_vsi *vsi)
5516 {
5517         struct i40e_pf *pf = vsi->back;
5518
5519         switch (pf->hw.phy.link_info.link_speed) {
5520         case I40E_LINK_SPEED_40GB:
5521                 return 40000;
5522         case I40E_LINK_SPEED_25GB:
5523                 return 25000;
5524         case I40E_LINK_SPEED_20GB:
5525                 return 20000;
5526         case I40E_LINK_SPEED_10GB:
5527                 return 10000;
5528         case I40E_LINK_SPEED_1GB:
5529                 return 1000;
5530         default:
5531                 return -EINVAL;
5532         }
5533 }
5534
5535 /**
5536  * i40e_set_bw_limit - setup BW limit for Tx traffic based on max_tx_rate
5537  * @vsi: VSI to be configured
5538  * @seid: seid of the channel/VSI
5539  * @max_tx_rate: max TX rate to be configured as BW limit
5540  *
5541  * Helper function to set BW limit for a given VSI
5542  **/
5543 int i40e_set_bw_limit(struct i40e_vsi *vsi, u16 seid, u64 max_tx_rate)
5544 {
5545         struct i40e_pf *pf = vsi->back;
5546         u64 credits = 0;
5547         int speed = 0;
5548         int ret = 0;
5549
5550         speed = i40e_get_link_speed(vsi);
5551         if (max_tx_rate > speed) {
5552                 dev_err(&pf->pdev->dev,
5553                         "Invalid max tx rate %llu specified for VSI seid %d.",
5554                         max_tx_rate, seid);
5555                 return -EINVAL;
5556         }
5557         if (max_tx_rate && max_tx_rate < 50) {
5558                 dev_warn(&pf->pdev->dev,
5559                          "Setting max tx rate to minimum usable value of 50Mbps.\n");
5560                 max_tx_rate = 50;
5561         }
5562
5563         /* Tx rate credits are in values of 50Mbps, 0 is disabled */
5564         credits = max_tx_rate;
5565         do_div(credits, I40E_BW_CREDIT_DIVISOR);
5566         ret = i40e_aq_config_vsi_bw_limit(&pf->hw, seid, credits,
5567                                           I40E_MAX_BW_INACTIVE_ACCUM, NULL);
5568         if (ret)
5569                 dev_err(&pf->pdev->dev,
5570                         "Failed set tx rate (%llu Mbps) for vsi->seid %u, err %s aq_err %s\n",
5571                         max_tx_rate, seid, i40e_stat_str(&pf->hw, ret),
5572                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
5573         return ret;
5574 }
5575
5576 /**
5577  * i40e_remove_queue_channels - Remove queue channels for the TCs
5578  * @vsi: VSI to be configured
5579  *
5580  * Remove queue channels for the TCs
5581  **/
5582 static void i40e_remove_queue_channels(struct i40e_vsi *vsi)
5583 {
5584         enum i40e_admin_queue_err last_aq_status;
5585         struct i40e_cloud_filter *cfilter;
5586         struct i40e_channel *ch, *ch_tmp;
5587         struct i40e_pf *pf = vsi->back;
5588         struct hlist_node *node;
5589         int ret, i;
5590
5591         /* Reset rss size that was stored when reconfiguring rss for
5592          * channel VSIs with non-power-of-2 queue count.
5593          */
5594         vsi->current_rss_size = 0;
5595
5596         /* perform cleanup for channels if they exist */
5597         if (list_empty(&vsi->ch_list))
5598                 return;
5599
5600         list_for_each_entry_safe(ch, ch_tmp, &vsi->ch_list, list) {
5601                 struct i40e_vsi *p_vsi;
5602
5603                 list_del(&ch->list);
5604                 p_vsi = ch->parent_vsi;
5605                 if (!p_vsi || !ch->initialized) {
5606                         kfree(ch);
5607                         continue;
5608                 }
5609                 /* Reset queue contexts */
5610                 for (i = 0; i < ch->num_queue_pairs; i++) {
5611                         struct i40e_ring *tx_ring, *rx_ring;
5612                         u16 pf_q;
5613
5614                         pf_q = ch->base_queue + i;
5615                         tx_ring = vsi->tx_rings[pf_q];
5616                         tx_ring->ch = NULL;
5617
5618                         rx_ring = vsi->rx_rings[pf_q];
5619                         rx_ring->ch = NULL;
5620                 }
5621
5622                 /* Reset BW configured for this VSI via mqprio */
5623                 ret = i40e_set_bw_limit(vsi, ch->seid, 0);
5624                 if (ret)
5625                         dev_info(&vsi->back->pdev->dev,
5626                                  "Failed to reset tx rate for ch->seid %u\n",
5627                                  ch->seid);
5628
5629                 /* delete cloud filters associated with this channel */
5630                 hlist_for_each_entry_safe(cfilter, node,
5631                                           &pf->cloud_filter_list, cloud_node) {
5632                         if (cfilter->seid != ch->seid)
5633                                 continue;
5634
5635                         hash_del(&cfilter->cloud_node);
5636                         if (cfilter->dst_port)
5637                                 ret = i40e_add_del_cloud_filter_big_buf(vsi,
5638                                                                         cfilter,
5639                                                                         false);
5640                         else
5641                                 ret = i40e_add_del_cloud_filter(vsi, cfilter,
5642                                                                 false);
5643                         last_aq_status = pf->hw.aq.asq_last_status;
5644                         if (ret)
5645                                 dev_info(&pf->pdev->dev,
5646                                          "Failed to delete cloud filter, err %s aq_err %s\n",
5647                                          i40e_stat_str(&pf->hw, ret),
5648                                          i40e_aq_str(&pf->hw, last_aq_status));
5649                         kfree(cfilter);
5650                 }
5651
5652                 /* delete VSI from FW */
5653                 ret = i40e_aq_delete_element(&vsi->back->hw, ch->seid,
5654                                              NULL);
5655                 if (ret)
5656                         dev_err(&vsi->back->pdev->dev,
5657                                 "unable to remove channel (%d) for parent VSI(%d)\n",
5658                                 ch->seid, p_vsi->seid);
5659                 kfree(ch);
5660         }
5661         INIT_LIST_HEAD(&vsi->ch_list);
5662 }
5663
5664 /**
5665  * i40e_is_any_channel - channel exist or not
5666  * @vsi: ptr to VSI to which channels are associated with
5667  *
5668  * Returns true or false if channel(s) exist for associated VSI or not
5669  **/
5670 static bool i40e_is_any_channel(struct i40e_vsi *vsi)
5671 {
5672         struct i40e_channel *ch, *ch_tmp;
5673
5674         list_for_each_entry_safe(ch, ch_tmp, &vsi->ch_list, list) {
5675                 if (ch->initialized)
5676                         return true;
5677         }
5678
5679         return false;
5680 }
5681
5682 /**
5683  * i40e_get_max_queues_for_channel
5684  * @vsi: ptr to VSI to which channels are associated with
5685  *
5686  * Helper function which returns max value among the queue counts set on the
5687  * channels/TCs created.
5688  **/
5689 static int i40e_get_max_queues_for_channel(struct i40e_vsi *vsi)
5690 {
5691         struct i40e_channel *ch, *ch_tmp;
5692         int max = 0;
5693
5694         list_for_each_entry_safe(ch, ch_tmp, &vsi->ch_list, list) {
5695                 if (!ch->initialized)
5696                         continue;
5697                 if (ch->num_queue_pairs > max)
5698                         max = ch->num_queue_pairs;
5699         }
5700
5701         return max;
5702 }
5703
5704 /**
5705  * i40e_validate_num_queues - validate num_queues w.r.t channel
5706  * @pf: ptr to PF device
5707  * @num_queues: number of queues
5708  * @vsi: the parent VSI
5709  * @reconfig_rss: indicates should the RSS be reconfigured or not
5710  *
5711  * This function validates number of queues in the context of new channel
5712  * which is being established and determines if RSS should be reconfigured
5713  * or not for parent VSI.
5714  **/
5715 static int i40e_validate_num_queues(struct i40e_pf *pf, int num_queues,
5716                                     struct i40e_vsi *vsi, bool *reconfig_rss)
5717 {
5718         int max_ch_queues;
5719
5720         if (!reconfig_rss)
5721                 return -EINVAL;
5722
5723         *reconfig_rss = false;
5724         if (vsi->current_rss_size) {
5725                 if (num_queues > vsi->current_rss_size) {
5726                         dev_dbg(&pf->pdev->dev,
5727                                 "Error: num_queues (%d) > vsi's current_size(%d)\n",
5728                                 num_queues, vsi->current_rss_size);
5729                         return -EINVAL;
5730                 } else if ((num_queues < vsi->current_rss_size) &&
5731                            (!is_power_of_2(num_queues))) {
5732                         dev_dbg(&pf->pdev->dev,
5733                                 "Error: num_queues (%d) < vsi's current_size(%d), but not power of 2\n",
5734                                 num_queues, vsi->current_rss_size);
5735                         return -EINVAL;
5736                 }
5737         }
5738
5739         if (!is_power_of_2(num_queues)) {
5740                 /* Find the max num_queues configured for channel if channel
5741                  * exist.
5742                  * if channel exist, then enforce 'num_queues' to be more than
5743                  * max ever queues configured for channel.
5744                  */
5745                 max_ch_queues = i40e_get_max_queues_for_channel(vsi);
5746                 if (num_queues < max_ch_queues) {
5747                         dev_dbg(&pf->pdev->dev,
5748                                 "Error: num_queues (%d) < max queues configured for channel(%d)\n",
5749                                 num_queues, max_ch_queues);
5750                         return -EINVAL;
5751                 }
5752                 *reconfig_rss = true;
5753         }
5754
5755         return 0;
5756 }
5757
5758 /**
5759  * i40e_vsi_reconfig_rss - reconfig RSS based on specified rss_size
5760  * @vsi: the VSI being setup
5761  * @rss_size: size of RSS, accordingly LUT gets reprogrammed
5762  *
5763  * This function reconfigures RSS by reprogramming LUTs using 'rss_size'
5764  **/
5765 static int i40e_vsi_reconfig_rss(struct i40e_vsi *vsi, u16 rss_size)
5766 {
5767         struct i40e_pf *pf = vsi->back;
5768         u8 seed[I40E_HKEY_ARRAY_SIZE];
5769         struct i40e_hw *hw = &pf->hw;
5770         int local_rss_size;
5771         u8 *lut;
5772         int ret;
5773
5774         if (!vsi->rss_size)
5775                 return -EINVAL;
5776
5777         if (rss_size > vsi->rss_size)
5778                 return -EINVAL;
5779
5780         local_rss_size = min_t(int, vsi->rss_size, rss_size);
5781         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
5782         if (!lut)
5783                 return -ENOMEM;
5784
5785         /* Ignoring user configured lut if there is one */
5786         i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, local_rss_size);
5787
5788         /* Use user configured hash key if there is one, otherwise
5789          * use default.
5790          */
5791         if (vsi->rss_hkey_user)
5792                 memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
5793         else
5794                 netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
5795
5796         ret = i40e_config_rss(vsi, seed, lut, vsi->rss_table_size);
5797         if (ret) {
5798                 dev_info(&pf->pdev->dev,
5799                          "Cannot set RSS lut, err %s aq_err %s\n",
5800                          i40e_stat_str(hw, ret),
5801                          i40e_aq_str(hw, hw->aq.asq_last_status));
5802                 kfree(lut);
5803                 return ret;
5804         }
5805         kfree(lut);
5806
5807         /* Do the update w.r.t. storing rss_size */
5808         if (!vsi->orig_rss_size)
5809                 vsi->orig_rss_size = vsi->rss_size;
5810         vsi->current_rss_size = local_rss_size;
5811
5812         return ret;
5813 }
5814
5815 /**
5816  * i40e_channel_setup_queue_map - Setup a channel queue map
5817  * @pf: ptr to PF device
5818  * @vsi: the VSI being setup
5819  * @ctxt: VSI context structure
5820  * @ch: ptr to channel structure
5821  *
5822  * Setup queue map for a specific channel
5823  **/
5824 static void i40e_channel_setup_queue_map(struct i40e_pf *pf,
5825                                          struct i40e_vsi_context *ctxt,
5826                                          struct i40e_channel *ch)
5827 {
5828         u16 qcount, qmap, sections = 0;
5829         u8 offset = 0;
5830         int pow;
5831
5832         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
5833         sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
5834
5835         qcount = min_t(int, ch->num_queue_pairs, pf->num_lan_msix);
5836         ch->num_queue_pairs = qcount;
5837
5838         /* find the next higher power-of-2 of num queue pairs */
5839         pow = ilog2(qcount);
5840         if (!is_power_of_2(qcount))
5841                 pow++;
5842
5843         qmap = (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
5844                 (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
5845
5846         /* Setup queue TC[0].qmap for given VSI context */
5847         ctxt->info.tc_mapping[0] = cpu_to_le16(qmap);
5848
5849         ctxt->info.up_enable_bits = 0x1; /* TC0 enabled */
5850         ctxt->info.mapping_flags |= cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
5851         ctxt->info.queue_mapping[0] = cpu_to_le16(ch->base_queue);
5852         ctxt->info.valid_sections |= cpu_to_le16(sections);
5853 }
5854
5855 /**
5856  * i40e_add_channel - add a channel by adding VSI
5857  * @pf: ptr to PF device
5858  * @uplink_seid: underlying HW switching element (VEB) ID
5859  * @ch: ptr to channel structure
5860  *
5861  * Add a channel (VSI) using add_vsi and queue_map
5862  **/
5863 static int i40e_add_channel(struct i40e_pf *pf, u16 uplink_seid,
5864                             struct i40e_channel *ch)
5865 {
5866         struct i40e_hw *hw = &pf->hw;
5867         struct i40e_vsi_context ctxt;
5868         u8 enabled_tc = 0x1; /* TC0 enabled */
5869         int ret;
5870
5871         if (ch->type != I40E_VSI_VMDQ2) {
5872                 dev_info(&pf->pdev->dev,
5873                          "add new vsi failed, ch->type %d\n", ch->type);
5874                 return -EINVAL;
5875         }
5876
5877         memset(&ctxt, 0, sizeof(ctxt));
5878         ctxt.pf_num = hw->pf_id;
5879         ctxt.vf_num = 0;
5880         ctxt.uplink_seid = uplink_seid;
5881         ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
5882         if (ch->type == I40E_VSI_VMDQ2)
5883                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
5884
5885         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED) {
5886                 ctxt.info.valid_sections |=
5887                      cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
5888                 ctxt.info.switch_id =
5889                    cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
5890         }
5891
5892         /* Set queue map for a given VSI context */
5893         i40e_channel_setup_queue_map(pf, &ctxt, ch);
5894
5895         /* Now time to create VSI */
5896         ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
5897         if (ret) {
5898                 dev_info(&pf->pdev->dev,
5899                          "add new vsi failed, err %s aq_err %s\n",
5900                          i40e_stat_str(&pf->hw, ret),
5901                          i40e_aq_str(&pf->hw,
5902                                      pf->hw.aq.asq_last_status));
5903                 return -ENOENT;
5904         }
5905
5906         /* Success, update channel, set enabled_tc only if the channel
5907          * is not a macvlan
5908          */
5909         ch->enabled_tc = !i40e_is_channel_macvlan(ch) && enabled_tc;
5910         ch->seid = ctxt.seid;
5911         ch->vsi_number = ctxt.vsi_number;
5912         ch->stat_counter_idx = cpu_to_le16(ctxt.info.stat_counter_idx);
5913
5914         /* copy just the sections touched not the entire info
5915          * since not all sections are valid as returned by
5916          * update vsi params
5917          */
5918         ch->info.mapping_flags = ctxt.info.mapping_flags;
5919         memcpy(&ch->info.queue_mapping,
5920                &ctxt.info.queue_mapping, sizeof(ctxt.info.queue_mapping));
5921         memcpy(&ch->info.tc_mapping, ctxt.info.tc_mapping,
5922                sizeof(ctxt.info.tc_mapping));
5923
5924         return 0;
5925 }
5926
5927 static int i40e_channel_config_bw(struct i40e_vsi *vsi, struct i40e_channel *ch,
5928                                   u8 *bw_share)
5929 {
5930         struct i40e_aqc_configure_vsi_tc_bw_data bw_data;
5931         i40e_status ret;
5932         int i;
5933
5934         bw_data.tc_valid_bits = ch->enabled_tc;
5935         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
5936                 bw_data.tc_bw_credits[i] = bw_share[i];
5937
5938         ret = i40e_aq_config_vsi_tc_bw(&vsi->back->hw, ch->seid,
5939                                        &bw_data, NULL);
5940         if (ret) {
5941                 dev_info(&vsi->back->pdev->dev,
5942                          "Config VSI BW allocation per TC failed, aq_err: %d for new_vsi->seid %u\n",
5943                          vsi->back->hw.aq.asq_last_status, ch->seid);
5944                 return -EINVAL;
5945         }
5946
5947         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
5948                 ch->info.qs_handle[i] = bw_data.qs_handles[i];
5949
5950         return 0;
5951 }
5952
5953 /**
5954  * i40e_channel_config_tx_ring - config TX ring associated with new channel
5955  * @pf: ptr to PF device
5956  * @vsi: the VSI being setup
5957  * @ch: ptr to channel structure
5958  *
5959  * Configure TX rings associated with channel (VSI) since queues are being
5960  * from parent VSI.
5961  **/
5962 static int i40e_channel_config_tx_ring(struct i40e_pf *pf,
5963                                        struct i40e_vsi *vsi,
5964                                        struct i40e_channel *ch)
5965 {
5966         i40e_status ret;
5967         int i;
5968         u8 bw_share[I40E_MAX_TRAFFIC_CLASS] = {0};
5969
5970         /* Enable ETS TCs with equal BW Share for now across all VSIs */
5971         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
5972                 if (ch->enabled_tc & BIT(i))
5973                         bw_share[i] = 1;
5974         }
5975
5976         /* configure BW for new VSI */
5977         ret = i40e_channel_config_bw(vsi, ch, bw_share);
5978         if (ret) {
5979                 dev_info(&vsi->back->pdev->dev,
5980                          "Failed configuring TC map %d for channel (seid %u)\n",
5981                          ch->enabled_tc, ch->seid);
5982                 return ret;
5983         }
5984
5985         for (i = 0; i < ch->num_queue_pairs; i++) {
5986                 struct i40e_ring *tx_ring, *rx_ring;
5987                 u16 pf_q;
5988
5989                 pf_q = ch->base_queue + i;
5990
5991                 /* Get to TX ring ptr of main VSI, for re-setup TX queue
5992                  * context
5993                  */
5994                 tx_ring = vsi->tx_rings[pf_q];
5995                 tx_ring->ch = ch;
5996
5997                 /* Get the RX ring ptr */
5998                 rx_ring = vsi->rx_rings[pf_q];
5999                 rx_ring->ch = ch;
6000         }
6001
6002         return 0;
6003 }
6004
6005 /**
6006  * i40e_setup_hw_channel - setup new channel
6007  * @pf: ptr to PF device
6008  * @vsi: the VSI being setup
6009  * @ch: ptr to channel structure
6010  * @uplink_seid: underlying HW switching element (VEB) ID
6011  * @type: type of channel to be created (VMDq2/VF)
6012  *
6013  * Setup new channel (VSI) based on specified type (VMDq2/VF)
6014  * and configures TX rings accordingly
6015  **/
6016 static inline int i40e_setup_hw_channel(struct i40e_pf *pf,
6017                                         struct i40e_vsi *vsi,
6018                                         struct i40e_channel *ch,
6019                                         u16 uplink_seid, u8 type)
6020 {
6021         int ret;
6022
6023         ch->initialized = false;
6024         ch->base_queue = vsi->next_base_queue;
6025         ch->type = type;
6026
6027         /* Proceed with creation of channel (VMDq2) VSI */
6028         ret = i40e_add_channel(pf, uplink_seid, ch);
6029         if (ret) {
6030                 dev_info(&pf->pdev->dev,
6031                          "failed to add_channel using uplink_seid %u\n",
6032                          uplink_seid);
6033                 return ret;
6034         }
6035
6036         /* Mark the successful creation of channel */
6037         ch->initialized = true;
6038
6039         /* Reconfigure TX queues using QTX_CTL register */
6040         ret = i40e_channel_config_tx_ring(pf, vsi, ch);
6041         if (ret) {
6042                 dev_info(&pf->pdev->dev,
6043                          "failed to configure TX rings for channel %u\n",
6044                          ch->seid);
6045                 return ret;
6046         }
6047
6048         /* update 'next_base_queue' */
6049         vsi->next_base_queue = vsi->next_base_queue + ch->num_queue_pairs;
6050         dev_dbg(&pf->pdev->dev,
6051                 "Added channel: vsi_seid %u, vsi_number %u, stat_counter_idx %u, num_queue_pairs %u, pf->next_base_queue %d\n",
6052                 ch->seid, ch->vsi_number, ch->stat_counter_idx,
6053                 ch->num_queue_pairs,
6054                 vsi->next_base_queue);
6055         return ret;
6056 }
6057
6058 /**
6059  * i40e_setup_channel - setup new channel using uplink element
6060  * @pf: ptr to PF device
6061  * @type: type of channel to be created (VMDq2/VF)
6062  * @uplink_seid: underlying HW switching element (VEB) ID
6063  * @ch: ptr to channel structure
6064  *
6065  * Setup new channel (VSI) based on specified type (VMDq2/VF)
6066  * and uplink switching element (uplink_seid)
6067  **/
6068 static bool i40e_setup_channel(struct i40e_pf *pf, struct i40e_vsi *vsi,
6069                                struct i40e_channel *ch)
6070 {
6071         u8 vsi_type;
6072         u16 seid;
6073         int ret;
6074
6075         if (vsi->type == I40E_VSI_MAIN) {
6076                 vsi_type = I40E_VSI_VMDQ2;
6077         } else {
6078                 dev_err(&pf->pdev->dev, "unsupported parent vsi type(%d)\n",
6079                         vsi->type);
6080                 return false;
6081         }
6082
6083         /* underlying switching element */
6084         seid = pf->vsi[pf->lan_vsi]->uplink_seid;
6085
6086         /* create channel (VSI), configure TX rings */
6087         ret = i40e_setup_hw_channel(pf, vsi, ch, seid, vsi_type);
6088         if (ret) {
6089                 dev_err(&pf->pdev->dev, "failed to setup hw_channel\n");
6090                 return false;
6091         }
6092
6093         return ch->initialized ? true : false;
6094 }
6095
6096 /**
6097  * i40e_validate_and_set_switch_mode - sets up switch mode correctly
6098  * @vsi: ptr to VSI which has PF backing
6099  *
6100  * Sets up switch mode correctly if it needs to be changed and perform
6101  * what are allowed modes.
6102  **/
6103 static int i40e_validate_and_set_switch_mode(struct i40e_vsi *vsi)
6104 {
6105         u8 mode;
6106         struct i40e_pf *pf = vsi->back;
6107         struct i40e_hw *hw = &pf->hw;
6108         int ret;
6109
6110         ret = i40e_get_capabilities(pf, i40e_aqc_opc_list_dev_capabilities);
6111         if (ret)
6112                 return -EINVAL;
6113
6114         if (hw->dev_caps.switch_mode) {
6115                 /* if switch mode is set, support mode2 (non-tunneled for
6116                  * cloud filter) for now
6117                  */
6118                 u32 switch_mode = hw->dev_caps.switch_mode &
6119                                   I40E_SWITCH_MODE_MASK;
6120                 if (switch_mode >= I40E_CLOUD_FILTER_MODE1) {
6121                         if (switch_mode == I40E_CLOUD_FILTER_MODE2)
6122                                 return 0;
6123                         dev_err(&pf->pdev->dev,
6124                                 "Invalid switch_mode (%d), only non-tunneled mode for cloud filter is supported\n",
6125                                 hw->dev_caps.switch_mode);
6126                         return -EINVAL;
6127                 }
6128         }
6129
6130         /* Set Bit 7 to be valid */
6131         mode = I40E_AQ_SET_SWITCH_BIT7_VALID;
6132
6133         /* Set L4type for TCP support */
6134         mode |= I40E_AQ_SET_SWITCH_L4_TYPE_TCP;
6135
6136         /* Set cloud filter mode */
6137         mode |= I40E_AQ_SET_SWITCH_MODE_NON_TUNNEL;
6138
6139         /* Prep mode field for set_switch_config */
6140         ret = i40e_aq_set_switch_config(hw, pf->last_sw_conf_flags,
6141                                         pf->last_sw_conf_valid_flags,
6142                                         mode, NULL);
6143         if (ret && hw->aq.asq_last_status != I40E_AQ_RC_ESRCH)
6144                 dev_err(&pf->pdev->dev,
6145                         "couldn't set switch config bits, err %s aq_err %s\n",
6146                         i40e_stat_str(hw, ret),
6147                         i40e_aq_str(hw,
6148                                     hw->aq.asq_last_status));
6149
6150         return ret;
6151 }
6152
6153 /**
6154  * i40e_create_queue_channel - function to create channel
6155  * @vsi: VSI to be configured
6156  * @ch: ptr to channel (it contains channel specific params)
6157  *
6158  * This function creates channel (VSI) using num_queues specified by user,
6159  * reconfigs RSS if needed.
6160  **/
6161 int i40e_create_queue_channel(struct i40e_vsi *vsi,
6162                               struct i40e_channel *ch)
6163 {
6164         struct i40e_pf *pf = vsi->back;
6165         bool reconfig_rss;
6166         int err;
6167
6168         if (!ch)
6169                 return -EINVAL;
6170
6171         if (!ch->num_queue_pairs) {
6172                 dev_err(&pf->pdev->dev, "Invalid num_queues requested: %d\n",
6173                         ch->num_queue_pairs);
6174                 return -EINVAL;
6175         }
6176
6177         /* validate user requested num_queues for channel */
6178         err = i40e_validate_num_queues(pf, ch->num_queue_pairs, vsi,
6179                                        &reconfig_rss);
6180         if (err) {
6181                 dev_info(&pf->pdev->dev, "Failed to validate num_queues (%d)\n",
6182                          ch->num_queue_pairs);
6183                 return -EINVAL;
6184         }
6185
6186         /* By default we are in VEPA mode, if this is the first VF/VMDq
6187          * VSI to be added switch to VEB mode.
6188          */
6189         if ((!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) ||
6190             (!i40e_is_any_channel(vsi))) {
6191                 if (!is_power_of_2(vsi->tc_config.tc_info[0].qcount)) {
6192                         dev_dbg(&pf->pdev->dev,
6193                                 "Failed to create channel. Override queues (%u) not power of 2\n",
6194                                 vsi->tc_config.tc_info[0].qcount);
6195                         return -EINVAL;
6196                 }
6197
6198                 if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
6199                         pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
6200
6201                         if (vsi->type == I40E_VSI_MAIN) {
6202                                 if (pf->flags & I40E_FLAG_TC_MQPRIO)
6203                                         i40e_do_reset(pf, I40E_PF_RESET_FLAG,
6204                                                       true);
6205                                 else
6206                                         i40e_do_reset_safe(pf,
6207                                                            I40E_PF_RESET_FLAG);
6208                         }
6209                 }
6210                 /* now onwards for main VSI, number of queues will be value
6211                  * of TC0's queue count
6212                  */
6213         }
6214
6215         /* By this time, vsi->cnt_q_avail shall be set to non-zero and
6216          * it should be more than num_queues
6217          */
6218         if (!vsi->cnt_q_avail || vsi->cnt_q_avail < ch->num_queue_pairs) {
6219                 dev_dbg(&pf->pdev->dev,
6220                         "Error: cnt_q_avail (%u) less than num_queues %d\n",
6221                         vsi->cnt_q_avail, ch->num_queue_pairs);
6222                 return -EINVAL;
6223         }
6224
6225         /* reconfig_rss only if vsi type is MAIN_VSI */
6226         if (reconfig_rss && (vsi->type == I40E_VSI_MAIN)) {
6227                 err = i40e_vsi_reconfig_rss(vsi, ch->num_queue_pairs);
6228                 if (err) {
6229                         dev_info(&pf->pdev->dev,
6230                                  "Error: unable to reconfig rss for num_queues (%u)\n",
6231                                  ch->num_queue_pairs);
6232                         return -EINVAL;
6233                 }
6234         }
6235
6236         if (!i40e_setup_channel(pf, vsi, ch)) {
6237                 dev_info(&pf->pdev->dev, "Failed to setup channel\n");
6238                 return -EINVAL;
6239         }
6240
6241         dev_info(&pf->pdev->dev,
6242                  "Setup channel (id:%u) utilizing num_queues %d\n",
6243                  ch->seid, ch->num_queue_pairs);
6244
6245         /* configure VSI for BW limit */
6246         if (ch->max_tx_rate) {
6247                 u64 credits = ch->max_tx_rate;
6248
6249                 if (i40e_set_bw_limit(vsi, ch->seid, ch->max_tx_rate))
6250                         return -EINVAL;
6251
6252                 do_div(credits, I40E_BW_CREDIT_DIVISOR);
6253                 dev_dbg(&pf->pdev->dev,
6254                         "Set tx rate of %llu Mbps (count of 50Mbps %llu) for vsi->seid %u\n",
6255                         ch->max_tx_rate,
6256                         credits,
6257                         ch->seid);
6258         }
6259
6260         /* in case of VF, this will be main SRIOV VSI */
6261         ch->parent_vsi = vsi;
6262
6263         /* and update main_vsi's count for queue_available to use */
6264         vsi->cnt_q_avail -= ch->num_queue_pairs;
6265
6266         return 0;
6267 }
6268
6269 /**
6270  * i40e_configure_queue_channels - Add queue channel for the given TCs
6271  * @vsi: VSI to be configured
6272  *
6273  * Configures queue channel mapping to the given TCs
6274  **/
6275 static int i40e_configure_queue_channels(struct i40e_vsi *vsi)
6276 {
6277         struct i40e_channel *ch;
6278         u64 max_rate = 0;
6279         int ret = 0, i;
6280
6281         /* Create app vsi with the TCs. Main VSI with TC0 is already set up */
6282         vsi->tc_seid_map[0] = vsi->seid;
6283         for (i = 1; i < I40E_MAX_TRAFFIC_CLASS; i++) {
6284                 if (vsi->tc_config.enabled_tc & BIT(i)) {
6285                         ch = kzalloc(sizeof(*ch), GFP_KERNEL);
6286                         if (!ch) {
6287                                 ret = -ENOMEM;
6288                                 goto err_free;
6289                         }
6290
6291                         INIT_LIST_HEAD(&ch->list);
6292                         ch->num_queue_pairs =
6293                                 vsi->tc_config.tc_info[i].qcount;
6294                         ch->base_queue =
6295                                 vsi->tc_config.tc_info[i].qoffset;
6296
6297                         /* Bandwidth limit through tc interface is in bytes/s,
6298                          * change to Mbit/s
6299                          */
6300                         max_rate = vsi->mqprio_qopt.max_rate[i];
6301                         do_div(max_rate, I40E_BW_MBPS_DIVISOR);
6302                         ch->max_tx_rate = max_rate;
6303
6304                         list_add_tail(&ch->list, &vsi->ch_list);
6305
6306                         ret = i40e_create_queue_channel(vsi, ch);
6307                         if (ret) {
6308                                 dev_err(&vsi->back->pdev->dev,
6309                                         "Failed creating queue channel with TC%d: queues %d\n",
6310                                         i, ch->num_queue_pairs);
6311                                 goto err_free;
6312                         }
6313                         vsi->tc_seid_map[i] = ch->seid;
6314                 }
6315         }
6316         return ret;
6317
6318 err_free:
6319         i40e_remove_queue_channels(vsi);
6320         return ret;
6321 }
6322
6323 /**
6324  * i40e_veb_config_tc - Configure TCs for given VEB
6325  * @veb: given VEB
6326  * @enabled_tc: TC bitmap
6327  *
6328  * Configures given TC bitmap for VEB (switching) element
6329  **/
6330 int i40e_veb_config_tc(struct i40e_veb *veb, u8 enabled_tc)
6331 {
6332         struct i40e_aqc_configure_switching_comp_bw_config_data bw_data = {0};
6333         struct i40e_pf *pf = veb->pf;
6334         int ret = 0;
6335         int i;
6336
6337         /* No TCs or already enabled TCs just return */
6338         if (!enabled_tc || veb->enabled_tc == enabled_tc)
6339                 return ret;
6340
6341         bw_data.tc_valid_bits = enabled_tc;
6342         /* bw_data.absolute_credits is not set (relative) */
6343
6344         /* Enable ETS TCs with equal BW Share for now */
6345         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
6346                 if (enabled_tc & BIT(i))
6347                         bw_data.tc_bw_share_credits[i] = 1;
6348         }
6349
6350         ret = i40e_aq_config_switch_comp_bw_config(&pf->hw, veb->seid,
6351                                                    &bw_data, NULL);
6352         if (ret) {
6353                 dev_info(&pf->pdev->dev,
6354                          "VEB bw config failed, err %s aq_err %s\n",
6355                          i40e_stat_str(&pf->hw, ret),
6356                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6357                 goto out;
6358         }
6359
6360         /* Update the BW information */
6361         ret = i40e_veb_get_bw_info(veb);
6362         if (ret) {
6363                 dev_info(&pf->pdev->dev,
6364                          "Failed getting veb bw config, err %s aq_err %s\n",
6365                          i40e_stat_str(&pf->hw, ret),
6366                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6367         }
6368
6369 out:
6370         return ret;
6371 }
6372
6373 #ifdef CONFIG_I40E_DCB
6374 /**
6375  * i40e_dcb_reconfigure - Reconfigure all VEBs and VSIs
6376  * @pf: PF struct
6377  *
6378  * Reconfigure VEB/VSIs on a given PF; it is assumed that
6379  * the caller would've quiesce all the VSIs before calling
6380  * this function
6381  **/
6382 static void i40e_dcb_reconfigure(struct i40e_pf *pf)
6383 {
6384         u8 tc_map = 0;
6385         int ret;
6386         u8 v;
6387
6388         /* Enable the TCs available on PF to all VEBs */
6389         tc_map = i40e_pf_get_tc_map(pf);
6390         for (v = 0; v < I40E_MAX_VEB; v++) {
6391                 if (!pf->veb[v])
6392                         continue;
6393                 ret = i40e_veb_config_tc(pf->veb[v], tc_map);
6394                 if (ret) {
6395                         dev_info(&pf->pdev->dev,
6396                                  "Failed configuring TC for VEB seid=%d\n",
6397                                  pf->veb[v]->seid);
6398                         /* Will try to configure as many components */
6399                 }
6400         }
6401
6402         /* Update each VSI */
6403         for (v = 0; v < pf->num_alloc_vsi; v++) {
6404                 if (!pf->vsi[v])
6405                         continue;
6406
6407                 /* - Enable all TCs for the LAN VSI
6408                  * - For all others keep them at TC0 for now
6409                  */
6410                 if (v == pf->lan_vsi)
6411                         tc_map = i40e_pf_get_tc_map(pf);
6412                 else
6413                         tc_map = I40E_DEFAULT_TRAFFIC_CLASS;
6414
6415                 ret = i40e_vsi_config_tc(pf->vsi[v], tc_map);
6416                 if (ret) {
6417                         dev_info(&pf->pdev->dev,
6418                                  "Failed configuring TC for VSI seid=%d\n",
6419                                  pf->vsi[v]->seid);
6420                         /* Will try to configure as many components */
6421                 } else {
6422                         /* Re-configure VSI vectors based on updated TC map */
6423                         i40e_vsi_map_rings_to_vectors(pf->vsi[v]);
6424                         if (pf->vsi[v]->netdev)
6425                                 i40e_dcbnl_set_all(pf->vsi[v]);
6426                 }
6427         }
6428 }
6429
6430 /**
6431  * i40e_resume_port_tx - Resume port Tx
6432  * @pf: PF struct
6433  *
6434  * Resume a port's Tx and issue a PF reset in case of failure to
6435  * resume.
6436  **/
6437 static int i40e_resume_port_tx(struct i40e_pf *pf)
6438 {
6439         struct i40e_hw *hw = &pf->hw;
6440         int ret;
6441
6442         ret = i40e_aq_resume_port_tx(hw, NULL);
6443         if (ret) {
6444                 dev_info(&pf->pdev->dev,
6445                          "Resume Port Tx failed, err %s aq_err %s\n",
6446                           i40e_stat_str(&pf->hw, ret),
6447                           i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6448                 /* Schedule PF reset to recover */
6449                 set_bit(__I40E_PF_RESET_REQUESTED, pf->state);
6450                 i40e_service_event_schedule(pf);
6451         }
6452
6453         return ret;
6454 }
6455
6456 /**
6457  * i40e_init_pf_dcb - Initialize DCB configuration
6458  * @pf: PF being configured
6459  *
6460  * Query the current DCB configuration and cache it
6461  * in the hardware structure
6462  **/
6463 static int i40e_init_pf_dcb(struct i40e_pf *pf)
6464 {
6465         struct i40e_hw *hw = &pf->hw;
6466         int err = 0;
6467
6468         /* Do not enable DCB for SW1 and SW2 images even if the FW is capable
6469          * Also do not enable DCBx if FW LLDP agent is disabled
6470          */
6471         if ((pf->hw_features & I40E_HW_NO_DCB_SUPPORT) ||
6472             (pf->flags & I40E_FLAG_DISABLE_FW_LLDP)) {
6473                 dev_info(&pf->pdev->dev, "DCB is not supported or FW LLDP is disabled\n");
6474                 err = I40E_NOT_SUPPORTED;
6475                 goto out;
6476         }
6477
6478         err = i40e_init_dcb(hw, true);
6479         if (!err) {
6480                 /* Device/Function is not DCBX capable */
6481                 if ((!hw->func_caps.dcb) ||
6482                     (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED)) {
6483                         dev_info(&pf->pdev->dev,
6484                                  "DCBX offload is not supported or is disabled for this PF.\n");
6485                 } else {
6486                         /* When status is not DISABLED then DCBX in FW */
6487                         pf->dcbx_cap = DCB_CAP_DCBX_LLD_MANAGED |
6488                                        DCB_CAP_DCBX_VER_IEEE;
6489
6490                         pf->flags |= I40E_FLAG_DCB_CAPABLE;
6491                         /* Enable DCB tagging only when more than one TC
6492                          * or explicitly disable if only one TC
6493                          */
6494                         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
6495                                 pf->flags |= I40E_FLAG_DCB_ENABLED;
6496                         else
6497                                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
6498                         dev_dbg(&pf->pdev->dev,
6499                                 "DCBX offload is supported for this PF.\n");
6500                 }
6501         } else if (pf->hw.aq.asq_last_status == I40E_AQ_RC_EPERM) {
6502                 dev_info(&pf->pdev->dev, "FW LLDP disabled for this PF.\n");
6503                 pf->flags |= I40E_FLAG_DISABLE_FW_LLDP;
6504         } else {
6505                 dev_info(&pf->pdev->dev,
6506                          "Query for DCB configuration failed, err %s aq_err %s\n",
6507                          i40e_stat_str(&pf->hw, err),
6508                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6509         }
6510
6511 out:
6512         return err;
6513 }
6514 #endif /* CONFIG_I40E_DCB */
6515
6516 /**
6517  * i40e_print_link_message - print link up or down
6518  * @vsi: the VSI for which link needs a message
6519  * @isup: true of link is up, false otherwise
6520  */
6521 void i40e_print_link_message(struct i40e_vsi *vsi, bool isup)
6522 {
6523         enum i40e_aq_link_speed new_speed;
6524         struct i40e_pf *pf = vsi->back;
6525         char *speed = "Unknown";
6526         char *fc = "Unknown";
6527         char *fec = "";
6528         char *req_fec = "";
6529         char *an = "";
6530
6531         if (isup)
6532                 new_speed = pf->hw.phy.link_info.link_speed;
6533         else
6534                 new_speed = I40E_LINK_SPEED_UNKNOWN;
6535
6536         if ((vsi->current_isup == isup) && (vsi->current_speed == new_speed))
6537                 return;
6538         vsi->current_isup = isup;
6539         vsi->current_speed = new_speed;
6540         if (!isup) {
6541                 netdev_info(vsi->netdev, "NIC Link is Down\n");
6542                 return;
6543         }
6544
6545         /* Warn user if link speed on NPAR enabled partition is not at
6546          * least 10GB
6547          */
6548         if (pf->hw.func_caps.npar_enable &&
6549             (pf->hw.phy.link_info.link_speed == I40E_LINK_SPEED_1GB ||
6550              pf->hw.phy.link_info.link_speed == I40E_LINK_SPEED_100MB))
6551                 netdev_warn(vsi->netdev,
6552                             "The partition detected link speed that is less than 10Gbps\n");
6553
6554         switch (pf->hw.phy.link_info.link_speed) {
6555         case I40E_LINK_SPEED_40GB:
6556                 speed = "40 G";
6557                 break;
6558         case I40E_LINK_SPEED_20GB:
6559                 speed = "20 G";
6560                 break;
6561         case I40E_LINK_SPEED_25GB:
6562                 speed = "25 G";
6563                 break;
6564         case I40E_LINK_SPEED_10GB:
6565                 speed = "10 G";
6566                 break;
6567         case I40E_LINK_SPEED_5GB:
6568                 speed = "5 G";
6569                 break;
6570         case I40E_LINK_SPEED_2_5GB:
6571                 speed = "2.5 G";
6572                 break;
6573         case I40E_LINK_SPEED_1GB:
6574                 speed = "1000 M";
6575                 break;
6576         case I40E_LINK_SPEED_100MB:
6577                 speed = "100 M";
6578                 break;
6579         default:
6580                 break;
6581         }
6582
6583         switch (pf->hw.fc.current_mode) {
6584         case I40E_FC_FULL:
6585                 fc = "RX/TX";
6586                 break;
6587         case I40E_FC_TX_PAUSE:
6588                 fc = "TX";
6589                 break;
6590         case I40E_FC_RX_PAUSE:
6591                 fc = "RX";
6592                 break;
6593         default:
6594                 fc = "None";
6595                 break;
6596         }
6597
6598         if (pf->hw.phy.link_info.link_speed == I40E_LINK_SPEED_25GB) {
6599                 req_fec = "None";
6600                 fec = "None";
6601                 an = "False";
6602
6603                 if (pf->hw.phy.link_info.an_info & I40E_AQ_AN_COMPLETED)
6604                         an = "True";
6605
6606                 if (pf->hw.phy.link_info.fec_info &
6607                     I40E_AQ_CONFIG_FEC_KR_ENA)
6608                         fec = "CL74 FC-FEC/BASE-R";
6609                 else if (pf->hw.phy.link_info.fec_info &
6610                          I40E_AQ_CONFIG_FEC_RS_ENA)
6611                         fec = "CL108 RS-FEC";
6612
6613                 /* 'CL108 RS-FEC' should be displayed when RS is requested, or
6614                  * both RS and FC are requested
6615                  */
6616                 if (vsi->back->hw.phy.link_info.req_fec_info &
6617                     (I40E_AQ_REQUEST_FEC_KR | I40E_AQ_REQUEST_FEC_RS)) {
6618                         if (vsi->back->hw.phy.link_info.req_fec_info &
6619                             I40E_AQ_REQUEST_FEC_RS)
6620                                 req_fec = "CL108 RS-FEC";
6621                         else
6622                                 req_fec = "CL74 FC-FEC/BASE-R";
6623                 }
6624                 netdev_info(vsi->netdev,
6625                             "NIC Link is Up, %sbps Full Duplex, Requested FEC: %s, Negotiated FEC: %s, Autoneg: %s, Flow Control: %s\n",
6626                             speed, req_fec, fec, an, fc);
6627         } else {
6628                 netdev_info(vsi->netdev,
6629                             "NIC Link is Up, %sbps Full Duplex, Flow Control: %s\n",
6630                             speed, fc);
6631         }
6632
6633 }
6634
6635 /**
6636  * i40e_up_complete - Finish the last steps of bringing up a connection
6637  * @vsi: the VSI being configured
6638  **/
6639 static int i40e_up_complete(struct i40e_vsi *vsi)
6640 {
6641         struct i40e_pf *pf = vsi->back;
6642         int err;
6643
6644         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
6645                 i40e_vsi_configure_msix(vsi);
6646         else
6647                 i40e_configure_msi_and_legacy(vsi);
6648
6649         /* start rings */
6650         err = i40e_vsi_start_rings(vsi);
6651         if (err)
6652                 return err;
6653
6654         clear_bit(__I40E_VSI_DOWN, vsi->state);
6655         i40e_napi_enable_all(vsi);
6656         i40e_vsi_enable_irq(vsi);
6657
6658         if ((pf->hw.phy.link_info.link_info & I40E_AQ_LINK_UP) &&
6659             (vsi->netdev)) {
6660                 i40e_print_link_message(vsi, true);
6661                 netif_tx_start_all_queues(vsi->netdev);
6662                 netif_carrier_on(vsi->netdev);
6663         }
6664
6665         /* replay FDIR SB filters */
6666         if (vsi->type == I40E_VSI_FDIR) {
6667                 /* reset fd counters */
6668                 pf->fd_add_err = 0;
6669                 pf->fd_atr_cnt = 0;
6670                 i40e_fdir_filter_restore(vsi);
6671         }
6672
6673         /* On the next run of the service_task, notify any clients of the new
6674          * opened netdev
6675          */
6676         set_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state);
6677         i40e_service_event_schedule(pf);
6678
6679         return 0;
6680 }
6681
6682 /**
6683  * i40e_vsi_reinit_locked - Reset the VSI
6684  * @vsi: the VSI being configured
6685  *
6686  * Rebuild the ring structs after some configuration
6687  * has changed, e.g. MTU size.
6688  **/
6689 static void i40e_vsi_reinit_locked(struct i40e_vsi *vsi)
6690 {
6691         struct i40e_pf *pf = vsi->back;
6692
6693         WARN_ON(in_interrupt());
6694         while (test_and_set_bit(__I40E_CONFIG_BUSY, pf->state))
6695                 usleep_range(1000, 2000);
6696         i40e_down(vsi);
6697
6698         i40e_up(vsi);
6699         clear_bit(__I40E_CONFIG_BUSY, pf->state);
6700 }
6701
6702 /**
6703  * i40e_force_link_state - Force the link status
6704  * @pf: board private structure
6705  * @is_up: whether the link state should be forced up or down
6706  **/
6707 static i40e_status i40e_force_link_state(struct i40e_pf *pf, bool is_up)
6708 {
6709         struct i40e_aq_get_phy_abilities_resp abilities;
6710         struct i40e_aq_set_phy_config config = {0};
6711         bool non_zero_phy_type = is_up;
6712         struct i40e_hw *hw = &pf->hw;
6713         i40e_status err;
6714         u64 mask;
6715         u8 speed;
6716
6717         /* Card might've been put in an unstable state by other drivers
6718          * and applications, which causes incorrect speed values being
6719          * set on startup. In order to clear speed registers, we call
6720          * get_phy_capabilities twice, once to get initial state of
6721          * available speeds, and once to get current PHY config.
6722          */
6723         err = i40e_aq_get_phy_capabilities(hw, false, true, &abilities,
6724                                            NULL);
6725         if (err) {
6726                 dev_err(&pf->pdev->dev,
6727                         "failed to get phy cap., ret =  %s last_status =  %s\n",
6728                         i40e_stat_str(hw, err),
6729                         i40e_aq_str(hw, hw->aq.asq_last_status));
6730                 return err;
6731         }
6732         speed = abilities.link_speed;
6733
6734         /* Get the current phy config */
6735         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities,
6736                                            NULL);
6737         if (err) {
6738                 dev_err(&pf->pdev->dev,
6739                         "failed to get phy cap., ret =  %s last_status =  %s\n",
6740                         i40e_stat_str(hw, err),
6741                         i40e_aq_str(hw, hw->aq.asq_last_status));
6742                 return err;
6743         }
6744
6745         /* If link needs to go up, but was not forced to go down,
6746          * and its speed values are OK, no need for a flap
6747          * if non_zero_phy_type was set, still need to force up
6748          */
6749         if (pf->flags & I40E_FLAG_TOTAL_PORT_SHUTDOWN_ENABLED)
6750                 non_zero_phy_type = true;
6751         else if (is_up && abilities.phy_type != 0 && abilities.link_speed != 0)
6752                 return I40E_SUCCESS;
6753
6754         /* To force link we need to set bits for all supported PHY types,
6755          * but there are now more than 32, so we need to split the bitmap
6756          * across two fields.
6757          */
6758         mask = I40E_PHY_TYPES_BITMASK;
6759         config.phy_type =
6760                 non_zero_phy_type ? cpu_to_le32((u32)(mask & 0xffffffff)) : 0;
6761         config.phy_type_ext =
6762                 non_zero_phy_type ? (u8)((mask >> 32) & 0xff) : 0;
6763         /* Copy the old settings, except of phy_type */
6764         config.abilities = abilities.abilities;
6765         if (pf->flags & I40E_FLAG_TOTAL_PORT_SHUTDOWN_ENABLED) {
6766                 if (is_up)
6767                         config.abilities |= I40E_AQ_PHY_ENABLE_LINK;
6768                 else
6769                         config.abilities &= ~(I40E_AQ_PHY_ENABLE_LINK);
6770         }
6771         if (abilities.link_speed != 0)
6772                 config.link_speed = abilities.link_speed;
6773         else
6774                 config.link_speed = speed;
6775         config.eee_capability = abilities.eee_capability;
6776         config.eeer = abilities.eeer_val;
6777         config.low_power_ctrl = abilities.d3_lpan;
6778         config.fec_config = abilities.fec_cfg_curr_mod_ext_info &
6779                             I40E_AQ_PHY_FEC_CONFIG_MASK;
6780         err = i40e_aq_set_phy_config(hw, &config, NULL);
6781
6782         if (err) {
6783                 dev_err(&pf->pdev->dev,
6784                         "set phy config ret =  %s last_status =  %s\n",
6785                         i40e_stat_str(&pf->hw, err),
6786                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
6787                 return err;
6788         }
6789
6790         /* Update the link info */
6791         err = i40e_update_link_info(hw);
6792         if (err) {
6793                 /* Wait a little bit (on 40G cards it sometimes takes a really
6794                  * long time for link to come back from the atomic reset)
6795                  * and try once more
6796                  */
6797                 msleep(1000);
6798                 i40e_update_link_info(hw);
6799         }
6800
6801         i40e_aq_set_link_restart_an(hw, is_up, NULL);
6802
6803         return I40E_SUCCESS;
6804 }
6805
6806 /**
6807  * i40e_up - Bring the connection back up after being down
6808  * @vsi: the VSI being configured
6809  **/
6810 int i40e_up(struct i40e_vsi *vsi)
6811 {
6812         int err;
6813
6814         if (vsi->type == I40E_VSI_MAIN &&
6815             (vsi->back->flags & I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED ||
6816              vsi->back->flags & I40E_FLAG_TOTAL_PORT_SHUTDOWN_ENABLED))
6817                 i40e_force_link_state(vsi->back, true);
6818
6819         err = i40e_vsi_configure(vsi);
6820         if (!err)
6821                 err = i40e_up_complete(vsi);
6822
6823         return err;
6824 }
6825
6826 /**
6827  * i40e_down - Shutdown the connection processing
6828  * @vsi: the VSI being stopped
6829  **/
6830 void i40e_down(struct i40e_vsi *vsi)
6831 {
6832         int i;
6833
6834         /* It is assumed that the caller of this function
6835          * sets the vsi->state __I40E_VSI_DOWN bit.
6836          */
6837         if (vsi->netdev) {
6838                 netif_carrier_off(vsi->netdev);
6839                 netif_tx_disable(vsi->netdev);
6840         }
6841         i40e_vsi_disable_irq(vsi);
6842         i40e_vsi_stop_rings(vsi);
6843         if (vsi->type == I40E_VSI_MAIN &&
6844            (vsi->back->flags & I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED ||
6845             vsi->back->flags & I40E_FLAG_TOTAL_PORT_SHUTDOWN_ENABLED))
6846                 i40e_force_link_state(vsi->back, false);
6847         i40e_napi_disable_all(vsi);
6848
6849         for (i = 0; i < vsi->num_queue_pairs; i++) {
6850                 i40e_clean_tx_ring(vsi->tx_rings[i]);
6851                 if (i40e_enabled_xdp_vsi(vsi)) {
6852                         /* Make sure that in-progress ndo_xdp_xmit and
6853                          * ndo_xsk_wakeup calls are completed.
6854                          */
6855                         synchronize_rcu();
6856                         i40e_clean_tx_ring(vsi->xdp_rings[i]);
6857                 }
6858                 i40e_clean_rx_ring(vsi->rx_rings[i]);
6859         }
6860
6861 }
6862
6863 /**
6864  * i40e_validate_mqprio_qopt- validate queue mapping info
6865  * @vsi: the VSI being configured
6866  * @mqprio_qopt: queue parametrs
6867  **/
6868 static int i40e_validate_mqprio_qopt(struct i40e_vsi *vsi,
6869                                      struct tc_mqprio_qopt_offload *mqprio_qopt)
6870 {
6871         u64 sum_max_rate = 0;
6872         u64 max_rate = 0;
6873         int i;
6874
6875         if (mqprio_qopt->qopt.offset[0] != 0 ||
6876             mqprio_qopt->qopt.num_tc < 1 ||
6877             mqprio_qopt->qopt.num_tc > I40E_MAX_TRAFFIC_CLASS)
6878                 return -EINVAL;
6879         for (i = 0; ; i++) {
6880                 if (!mqprio_qopt->qopt.count[i])
6881                         return -EINVAL;
6882                 if (mqprio_qopt->min_rate[i]) {
6883                         dev_err(&vsi->back->pdev->dev,
6884                                 "Invalid min tx rate (greater than 0) specified\n");
6885                         return -EINVAL;
6886                 }
6887                 max_rate = mqprio_qopt->max_rate[i];
6888                 do_div(max_rate, I40E_BW_MBPS_DIVISOR);
6889                 sum_max_rate += max_rate;
6890
6891                 if (i >= mqprio_qopt->qopt.num_tc - 1)
6892                         break;
6893                 if (mqprio_qopt->qopt.offset[i + 1] !=
6894                     (mqprio_qopt->qopt.offset[i] + mqprio_qopt->qopt.count[i]))
6895                         return -EINVAL;
6896         }
6897         if (vsi->num_queue_pairs <
6898             (mqprio_qopt->qopt.offset[i] + mqprio_qopt->qopt.count[i])) {
6899                 return -EINVAL;
6900         }
6901         if (sum_max_rate > i40e_get_link_speed(vsi)) {
6902                 dev_err(&vsi->back->pdev->dev,
6903                         "Invalid max tx rate specified\n");
6904                 return -EINVAL;
6905         }
6906         return 0;
6907 }
6908
6909 /**
6910  * i40e_vsi_set_default_tc_config - set default values for tc configuration
6911  * @vsi: the VSI being configured
6912  **/
6913 static void i40e_vsi_set_default_tc_config(struct i40e_vsi *vsi)
6914 {
6915         u16 qcount;
6916         int i;
6917
6918         /* Only TC0 is enabled */
6919         vsi->tc_config.numtc = 1;
6920         vsi->tc_config.enabled_tc = 1;
6921         qcount = min_t(int, vsi->alloc_queue_pairs,
6922                        i40e_pf_get_max_q_per_tc(vsi->back));
6923         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
6924                 /* For the TC that is not enabled set the offset to to default
6925                  * queue and allocate one queue for the given TC.
6926                  */
6927                 vsi->tc_config.tc_info[i].qoffset = 0;
6928                 if (i == 0)
6929                         vsi->tc_config.tc_info[i].qcount = qcount;
6930                 else
6931                         vsi->tc_config.tc_info[i].qcount = 1;
6932                 vsi->tc_config.tc_info[i].netdev_tc = 0;
6933         }
6934 }
6935
6936 /**
6937  * i40e_del_macvlan_filter
6938  * @hw: pointer to the HW structure
6939  * @seid: seid of the channel VSI
6940  * @macaddr: the mac address to apply as a filter
6941  * @aq_err: store the admin Q error
6942  *
6943  * This function deletes a mac filter on the channel VSI which serves as the
6944  * macvlan. Returns 0 on success.
6945  **/
6946 static i40e_status i40e_del_macvlan_filter(struct i40e_hw *hw, u16 seid,
6947                                            const u8 *macaddr, int *aq_err)
6948 {
6949         struct i40e_aqc_remove_macvlan_element_data element;
6950         i40e_status status;
6951
6952         memset(&element, 0, sizeof(element));
6953         ether_addr_copy(element.mac_addr, macaddr);
6954         element.vlan_tag = 0;
6955         element.flags = I40E_AQC_MACVLAN_DEL_PERFECT_MATCH;
6956         status = i40e_aq_remove_macvlan(hw, seid, &element, 1, NULL);
6957         *aq_err = hw->aq.asq_last_status;
6958
6959         return status;
6960 }
6961
6962 /**
6963  * i40e_add_macvlan_filter
6964  * @hw: pointer to the HW structure
6965  * @seid: seid of the channel VSI
6966  * @macaddr: the mac address to apply as a filter
6967  * @aq_err: store the admin Q error
6968  *
6969  * This function adds a mac filter on the channel VSI which serves as the
6970  * macvlan. Returns 0 on success.
6971  **/
6972 static i40e_status i40e_add_macvlan_filter(struct i40e_hw *hw, u16 seid,
6973                                            const u8 *macaddr, int *aq_err)
6974 {
6975         struct i40e_aqc_add_macvlan_element_data element;
6976         i40e_status status;
6977         u16 cmd_flags = 0;
6978
6979         ether_addr_copy(element.mac_addr, macaddr);
6980         element.vlan_tag = 0;
6981         element.queue_number = 0;
6982         element.match_method = I40E_AQC_MM_ERR_NO_RES;
6983         cmd_flags |= I40E_AQC_MACVLAN_ADD_PERFECT_MATCH;
6984         element.flags = cpu_to_le16(cmd_flags);
6985         status = i40e_aq_add_macvlan(hw, seid, &element, 1, NULL);
6986         *aq_err = hw->aq.asq_last_status;
6987
6988         return status;
6989 }
6990
6991 /**
6992  * i40e_reset_ch_rings - Reset the queue contexts in a channel
6993  * @vsi: the VSI we want to access
6994  * @ch: the channel we want to access
6995  */
6996 static void i40e_reset_ch_rings(struct i40e_vsi *vsi, struct i40e_channel *ch)
6997 {
6998         struct i40e_ring *tx_ring, *rx_ring;
6999         u16 pf_q;
7000         int i;
7001
7002         for (i = 0; i < ch->num_queue_pairs; i++) {
7003                 pf_q = ch->base_queue + i;
7004                 tx_ring = vsi->tx_rings[pf_q];
7005                 tx_ring->ch = NULL;
7006                 rx_ring = vsi->rx_rings[pf_q];
7007                 rx_ring->ch = NULL;
7008         }
7009 }
7010
7011 /**
7012  * i40e_free_macvlan_channels
7013  * @vsi: the VSI we want to access
7014  *
7015  * This function frees the Qs of the channel VSI from
7016  * the stack and also deletes the channel VSIs which
7017  * serve as macvlans.
7018  */
7019 static void i40e_free_macvlan_channels(struct i40e_vsi *vsi)
7020 {
7021         struct i40e_channel *ch, *ch_tmp;
7022         int ret;
7023
7024         if (list_empty(&vsi->macvlan_list))
7025                 return;
7026
7027         list_for_each_entry_safe(ch, ch_tmp, &vsi->macvlan_list, list) {
7028                 struct i40e_vsi *parent_vsi;
7029
7030                 if (i40e_is_channel_macvlan(ch)) {
7031                         i40e_reset_ch_rings(vsi, ch);
7032                         clear_bit(ch->fwd->bit_no, vsi->fwd_bitmask);
7033                         netdev_unbind_sb_channel(vsi->netdev, ch->fwd->netdev);
7034                         netdev_set_sb_channel(ch->fwd->netdev, 0);
7035                         kfree(ch->fwd);
7036                         ch->fwd = NULL;
7037                 }
7038
7039                 list_del(&ch->list);
7040                 parent_vsi = ch->parent_vsi;
7041                 if (!parent_vsi || !ch->initialized) {
7042                         kfree(ch);
7043                         continue;
7044                 }
7045
7046                 /* remove the VSI */
7047                 ret = i40e_aq_delete_element(&vsi->back->hw, ch->seid,
7048                                              NULL);
7049                 if (ret)
7050                         dev_err(&vsi->back->pdev->dev,
7051                                 "unable to remove channel (%d) for parent VSI(%d)\n",
7052                                 ch->seid, parent_vsi->seid);
7053                 kfree(ch);
7054         }
7055         vsi->macvlan_cnt = 0;
7056 }
7057
7058 /**
7059  * i40e_fwd_ring_up - bring the macvlan device up
7060  * @vsi: the VSI we want to access
7061  * @vdev: macvlan netdevice
7062  * @fwd: the private fwd structure
7063  */
7064 static int i40e_fwd_ring_up(struct i40e_vsi *vsi, struct net_device *vdev,
7065                             struct i40e_fwd_adapter *fwd)
7066 {
7067         int ret = 0, num_tc = 1,  i, aq_err;
7068         struct i40e_channel *ch, *ch_tmp;
7069         struct i40e_pf *pf = vsi->back;
7070         struct i40e_hw *hw = &pf->hw;
7071
7072         if (list_empty(&vsi->macvlan_list))
7073                 return -EINVAL;
7074
7075         /* Go through the list and find an available channel */
7076         list_for_each_entry_safe(ch, ch_tmp, &vsi->macvlan_list, list) {
7077                 if (!i40e_is_channel_macvlan(ch)) {
7078                         ch->fwd = fwd;
7079                         /* record configuration for macvlan interface in vdev */
7080                         for (i = 0; i < num_tc; i++)
7081                                 netdev_bind_sb_channel_queue(vsi->netdev, vdev,
7082                                                              i,
7083                                                              ch->num_queue_pairs,
7084                                                              ch->base_queue);
7085                         for (i = 0; i < ch->num_queue_pairs; i++) {
7086                                 struct i40e_ring *tx_ring, *rx_ring;
7087                                 u16 pf_q;
7088
7089                                 pf_q = ch->base_queue + i;
7090
7091                                 /* Get to TX ring ptr */
7092                                 tx_ring = vsi->tx_rings[pf_q];
7093                                 tx_ring->ch = ch;
7094
7095                                 /* Get the RX ring ptr */
7096                                 rx_ring = vsi->rx_rings[pf_q];
7097                                 rx_ring->ch = ch;
7098                         }
7099                         break;
7100                 }
7101         }
7102
7103         /* Guarantee all rings are updated before we update the
7104          * MAC address filter.
7105          */
7106         wmb();
7107
7108         /* Add a mac filter */
7109         ret = i40e_add_macvlan_filter(hw, ch->seid, vdev->dev_addr, &aq_err);
7110         if (ret) {
7111                 /* if we cannot add the MAC rule then disable the offload */
7112                 macvlan_release_l2fw_offload(vdev);
7113                 for (i = 0; i < ch->num_queue_pairs; i++) {
7114                         struct i40e_ring *rx_ring;
7115                         u16 pf_q;
7116
7117                         pf_q = ch->base_queue + i;
7118                         rx_ring = vsi->rx_rings[pf_q];
7119                         rx_ring->netdev = NULL;
7120                 }
7121                 dev_info(&pf->pdev->dev,
7122                          "Error adding mac filter on macvlan err %s, aq_err %s\n",
7123                           i40e_stat_str(hw, ret),
7124                           i40e_aq_str(hw, aq_err));
7125                 netdev_err(vdev, "L2fwd offload disabled to L2 filter error\n");
7126         }
7127
7128         return ret;
7129 }
7130
7131 /**
7132  * i40e_setup_macvlans - create the channels which will be macvlans
7133  * @vsi: the VSI we want to access
7134  * @macvlan_cnt: no. of macvlans to be setup
7135  * @qcnt: no. of Qs per macvlan
7136  * @vdev: macvlan netdevice
7137  */
7138 static int i40e_setup_macvlans(struct i40e_vsi *vsi, u16 macvlan_cnt, u16 qcnt,
7139                                struct net_device *vdev)
7140 {
7141         struct i40e_pf *pf = vsi->back;
7142         struct i40e_hw *hw = &pf->hw;
7143         struct i40e_vsi_context ctxt;
7144         u16 sections, qmap, num_qps;
7145         struct i40e_channel *ch;
7146         int i, pow, ret = 0;
7147         u8 offset = 0;
7148
7149         if (vsi->type != I40E_VSI_MAIN || !macvlan_cnt)
7150                 return -EINVAL;
7151
7152         num_qps = vsi->num_queue_pairs - (macvlan_cnt * qcnt);
7153
7154         /* find the next higher power-of-2 of num queue pairs */
7155         pow = fls(roundup_pow_of_two(num_qps) - 1);
7156
7157         qmap = (offset << I40E_AQ_VSI_TC_QUE_OFFSET_SHIFT) |
7158                 (pow << I40E_AQ_VSI_TC_QUE_NUMBER_SHIFT);
7159
7160         /* Setup context bits for the main VSI */
7161         sections = I40E_AQ_VSI_PROP_QUEUE_MAP_VALID;
7162         sections |= I40E_AQ_VSI_PROP_SCHED_VALID;
7163         memset(&ctxt, 0, sizeof(ctxt));
7164         ctxt.seid = vsi->seid;
7165         ctxt.pf_num = vsi->back->hw.pf_id;
7166         ctxt.vf_num = 0;
7167         ctxt.uplink_seid = vsi->uplink_seid;
7168         ctxt.info = vsi->info;
7169         ctxt.info.tc_mapping[0] = cpu_to_le16(qmap);
7170         ctxt.info.mapping_flags |= cpu_to_le16(I40E_AQ_VSI_QUE_MAP_CONTIG);
7171         ctxt.info.queue_mapping[0] = cpu_to_le16(vsi->base_queue);
7172         ctxt.info.valid_sections |= cpu_to_le16(sections);
7173
7174         /* Reconfigure RSS for main VSI with new max queue count */
7175         vsi->rss_size = max_t(u16, num_qps, qcnt);
7176         ret = i40e_vsi_config_rss(vsi);
7177         if (ret) {
7178                 dev_info(&pf->pdev->dev,
7179                          "Failed to reconfig RSS for num_queues (%u)\n",
7180                          vsi->rss_size);
7181                 return ret;
7182         }
7183         vsi->reconfig_rss = true;
7184         dev_dbg(&vsi->back->pdev->dev,
7185                 "Reconfigured RSS with num_queues (%u)\n", vsi->rss_size);
7186         vsi->next_base_queue = num_qps;
7187         vsi->cnt_q_avail = vsi->num_queue_pairs - num_qps;
7188
7189         /* Update the VSI after updating the VSI queue-mapping
7190          * information
7191          */
7192         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
7193         if (ret) {
7194                 dev_info(&pf->pdev->dev,
7195                          "Update vsi tc config failed, err %s aq_err %s\n",
7196                          i40e_stat_str(hw, ret),
7197                          i40e_aq_str(hw, hw->aq.asq_last_status));
7198                 return ret;
7199         }
7200         /* update the local VSI info with updated queue map */
7201         i40e_vsi_update_queue_map(vsi, &ctxt);
7202         vsi->info.valid_sections = 0;
7203
7204         /* Create channels for macvlans */
7205         INIT_LIST_HEAD(&vsi->macvlan_list);
7206         for (i = 0; i < macvlan_cnt; i++) {
7207                 ch = kzalloc(sizeof(*ch), GFP_KERNEL);
7208                 if (!ch) {
7209                         ret = -ENOMEM;
7210                         goto err_free;
7211                 }
7212                 INIT_LIST_HEAD(&ch->list);
7213                 ch->num_queue_pairs = qcnt;
7214                 if (!i40e_setup_channel(pf, vsi, ch)) {
7215                         ret = -EINVAL;
7216                         kfree(ch);
7217                         goto err_free;
7218                 }
7219                 ch->parent_vsi = vsi;
7220                 vsi->cnt_q_avail -= ch->num_queue_pairs;
7221                 vsi->macvlan_cnt++;
7222                 list_add_tail(&ch->list, &vsi->macvlan_list);
7223         }
7224
7225         return ret;
7226
7227 err_free:
7228         dev_info(&pf->pdev->dev, "Failed to setup macvlans\n");
7229         i40e_free_macvlan_channels(vsi);
7230
7231         return ret;
7232 }
7233
7234 /**
7235  * i40e_fwd_add - configure macvlans
7236  * @netdev: net device to configure
7237  * @vdev: macvlan netdevice
7238  **/
7239 static void *i40e_fwd_add(struct net_device *netdev, struct net_device *vdev)
7240 {
7241         struct i40e_netdev_priv *np = netdev_priv(netdev);
7242         u16 q_per_macvlan = 0, macvlan_cnt = 0, vectors;
7243         struct i40e_vsi *vsi = np->vsi;
7244         struct i40e_pf *pf = vsi->back;
7245         struct i40e_fwd_adapter *fwd;
7246         int avail_macvlan, ret;
7247
7248         if ((pf->flags & I40E_FLAG_DCB_ENABLED)) {
7249                 netdev_info(netdev, "Macvlans are not supported when DCB is enabled\n");
7250                 return ERR_PTR(-EINVAL);
7251         }
7252         if ((pf->flags & I40E_FLAG_TC_MQPRIO)) {
7253                 netdev_info(netdev, "Macvlans are not supported when HW TC offload is on\n");
7254                 return ERR_PTR(-EINVAL);
7255         }
7256         if (pf->num_lan_msix < I40E_MIN_MACVLAN_VECTORS) {
7257                 netdev_info(netdev, "Not enough vectors available to support macvlans\n");
7258                 return ERR_PTR(-EINVAL);
7259         }
7260
7261         /* The macvlan device has to be a single Q device so that the
7262          * tc_to_txq field can be reused to pick the tx queue.
7263          */
7264         if (netif_is_multiqueue(vdev))
7265                 return ERR_PTR(-ERANGE);
7266
7267         if (!vsi->macvlan_cnt) {
7268                 /* reserve bit 0 for the pf device */
7269                 set_bit(0, vsi->fwd_bitmask);
7270
7271                 /* Try to reserve as many queues as possible for macvlans. First
7272                  * reserve 3/4th of max vectors, then half, then quarter and
7273                  * calculate Qs per macvlan as you go
7274                  */
7275                 vectors = pf->num_lan_msix;
7276                 if (vectors <= I40E_MAX_MACVLANS && vectors > 64) {
7277                         /* allocate 4 Qs per macvlan and 32 Qs to the PF*/
7278                         q_per_macvlan = 4;
7279                         macvlan_cnt = (vectors - 32) / 4;
7280                 } else if (vectors <= 64 && vectors > 32) {
7281                         /* allocate 2 Qs per macvlan and 16 Qs to the PF*/
7282                         q_per_macvlan = 2;
7283                         macvlan_cnt = (vectors - 16) / 2;
7284                 } else if (vectors <= 32 && vectors > 16) {
7285                         /* allocate 1 Q per macvlan and 16 Qs to the PF*/
7286                         q_per_macvlan = 1;
7287                         macvlan_cnt = vectors - 16;
7288                 } else if (vectors <= 16 && vectors > 8) {
7289                         /* allocate 1 Q per macvlan and 8 Qs to the PF */
7290                         q_per_macvlan = 1;
7291                         macvlan_cnt = vectors - 8;
7292                 } else {
7293                         /* allocate 1 Q per macvlan and 1 Q to the PF */
7294                         q_per_macvlan = 1;
7295                         macvlan_cnt = vectors - 1;
7296                 }
7297
7298                 if (macvlan_cnt == 0)
7299                         return ERR_PTR(-EBUSY);
7300
7301                 /* Quiesce VSI queues */
7302                 i40e_quiesce_vsi(vsi);
7303
7304                 /* sets up the macvlans but does not "enable" them */
7305                 ret = i40e_setup_macvlans(vsi, macvlan_cnt, q_per_macvlan,
7306                                           vdev);
7307                 if (ret)
7308                         return ERR_PTR(ret);
7309
7310                 /* Unquiesce VSI */
7311                 i40e_unquiesce_vsi(vsi);
7312         }
7313         avail_macvlan = find_first_zero_bit(vsi->fwd_bitmask,
7314                                             vsi->macvlan_cnt);
7315         if (avail_macvlan >= I40E_MAX_MACVLANS)
7316                 return ERR_PTR(-EBUSY);
7317
7318         /* create the fwd struct */
7319         fwd = kzalloc(sizeof(*fwd), GFP_KERNEL);
7320         if (!fwd)
7321                 return ERR_PTR(-ENOMEM);
7322
7323         set_bit(avail_macvlan, vsi->fwd_bitmask);
7324         fwd->bit_no = avail_macvlan;
7325         netdev_set_sb_channel(vdev, avail_macvlan);
7326         fwd->netdev = vdev;
7327
7328         if (!netif_running(netdev))
7329                 return fwd;
7330
7331         /* Set fwd ring up */
7332         ret = i40e_fwd_ring_up(vsi, vdev, fwd);
7333         if (ret) {
7334                 /* unbind the queues and drop the subordinate channel config */
7335                 netdev_unbind_sb_channel(netdev, vdev);
7336                 netdev_set_sb_channel(vdev, 0);
7337
7338                 kfree(fwd);
7339                 return ERR_PTR(-EINVAL);
7340         }
7341
7342         return fwd;
7343 }
7344
7345 /**
7346  * i40e_del_all_macvlans - Delete all the mac filters on the channels
7347  * @vsi: the VSI we want to access
7348  */
7349 static void i40e_del_all_macvlans(struct i40e_vsi *vsi)
7350 {
7351         struct i40e_channel *ch, *ch_tmp;
7352         struct i40e_pf *pf = vsi->back;
7353         struct i40e_hw *hw = &pf->hw;
7354         int aq_err, ret = 0;
7355
7356         if (list_empty(&vsi->macvlan_list))
7357                 return;
7358
7359         list_for_each_entry_safe(ch, ch_tmp, &vsi->macvlan_list, list) {
7360                 if (i40e_is_channel_macvlan(ch)) {
7361                         ret = i40e_del_macvlan_filter(hw, ch->seid,
7362                                                       i40e_channel_mac(ch),
7363                                                       &aq_err);
7364                         if (!ret) {
7365                                 /* Reset queue contexts */
7366                                 i40e_reset_ch_rings(vsi, ch);
7367                                 clear_bit(ch->fwd->bit_no, vsi->fwd_bitmask);
7368                                 netdev_unbind_sb_channel(vsi->netdev,
7369                                                          ch->fwd->netdev);
7370                                 netdev_set_sb_channel(ch->fwd->netdev, 0);
7371                                 kfree(ch->fwd);
7372                                 ch->fwd = NULL;
7373                         }
7374                 }
7375         }
7376 }
7377
7378 /**
7379  * i40e_fwd_del - delete macvlan interfaces
7380  * @netdev: net device to configure
7381  * @vdev: macvlan netdevice
7382  */
7383 static void i40e_fwd_del(struct net_device *netdev, void *vdev)
7384 {
7385         struct i40e_netdev_priv *np = netdev_priv(netdev);
7386         struct i40e_fwd_adapter *fwd = vdev;
7387         struct i40e_channel *ch, *ch_tmp;
7388         struct i40e_vsi *vsi = np->vsi;
7389         struct i40e_pf *pf = vsi->back;
7390         struct i40e_hw *hw = &pf->hw;
7391         int aq_err, ret = 0;
7392
7393         /* Find the channel associated with the macvlan and del mac filter */
7394         list_for_each_entry_safe(ch, ch_tmp, &vsi->macvlan_list, list) {
7395                 if (i40e_is_channel_macvlan(ch) &&
7396                     ether_addr_equal(i40e_channel_mac(ch),
7397                                      fwd->netdev->dev_addr)) {
7398                         ret = i40e_del_macvlan_filter(hw, ch->seid,
7399                                                       i40e_channel_mac(ch),
7400                                                       &aq_err);
7401                         if (!ret) {
7402                                 /* Reset queue contexts */
7403                                 i40e_reset_ch_rings(vsi, ch);
7404                                 clear_bit(ch->fwd->bit_no, vsi->fwd_bitmask);
7405                                 netdev_unbind_sb_channel(netdev, fwd->netdev);
7406                                 netdev_set_sb_channel(fwd->netdev, 0);
7407                                 kfree(ch->fwd);
7408                                 ch->fwd = NULL;
7409                         } else {
7410                                 dev_info(&pf->pdev->dev,
7411                                          "Error deleting mac filter on macvlan err %s, aq_err %s\n",
7412                                           i40e_stat_str(hw, ret),
7413                                           i40e_aq_str(hw, aq_err));
7414                         }
7415                         break;
7416                 }
7417         }
7418 }
7419
7420 /**
7421  * i40e_setup_tc - configure multiple traffic classes
7422  * @netdev: net device to configure
7423  * @type_data: tc offload data
7424  **/
7425 static int i40e_setup_tc(struct net_device *netdev, void *type_data)
7426 {
7427         struct tc_mqprio_qopt_offload *mqprio_qopt = type_data;
7428         struct i40e_netdev_priv *np = netdev_priv(netdev);
7429         struct i40e_vsi *vsi = np->vsi;
7430         struct i40e_pf *pf = vsi->back;
7431         u8 enabled_tc = 0, num_tc, hw;
7432         bool need_reset = false;
7433         int old_queue_pairs;
7434         int ret = -EINVAL;
7435         u16 mode;
7436         int i;
7437
7438         old_queue_pairs = vsi->num_queue_pairs;
7439         num_tc = mqprio_qopt->qopt.num_tc;
7440         hw = mqprio_qopt->qopt.hw;
7441         mode = mqprio_qopt->mode;
7442         if (!hw) {
7443                 pf->flags &= ~I40E_FLAG_TC_MQPRIO;
7444                 memcpy(&vsi->mqprio_qopt, mqprio_qopt, sizeof(*mqprio_qopt));
7445                 goto config_tc;
7446         }
7447
7448         /* Check if MFP enabled */
7449         if (pf->flags & I40E_FLAG_MFP_ENABLED) {
7450                 netdev_info(netdev,
7451                             "Configuring TC not supported in MFP mode\n");
7452                 return ret;
7453         }
7454         switch (mode) {
7455         case TC_MQPRIO_MODE_DCB:
7456                 pf->flags &= ~I40E_FLAG_TC_MQPRIO;
7457
7458                 /* Check if DCB enabled to continue */
7459                 if (!(pf->flags & I40E_FLAG_DCB_ENABLED)) {
7460                         netdev_info(netdev,
7461                                     "DCB is not enabled for adapter\n");
7462                         return ret;
7463                 }
7464
7465                 /* Check whether tc count is within enabled limit */
7466                 if (num_tc > i40e_pf_get_num_tc(pf)) {
7467                         netdev_info(netdev,
7468                                     "TC count greater than enabled on link for adapter\n");
7469                         return ret;
7470                 }
7471                 break;
7472         case TC_MQPRIO_MODE_CHANNEL:
7473                 if (pf->flags & I40E_FLAG_DCB_ENABLED) {
7474                         netdev_info(netdev,
7475                                     "Full offload of TC Mqprio options is not supported when DCB is enabled\n");
7476                         return ret;
7477                 }
7478                 if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
7479                         return ret;
7480                 ret = i40e_validate_mqprio_qopt(vsi, mqprio_qopt);
7481                 if (ret)
7482                         return ret;
7483                 memcpy(&vsi->mqprio_qopt, mqprio_qopt,
7484                        sizeof(*mqprio_qopt));
7485                 pf->flags |= I40E_FLAG_TC_MQPRIO;
7486                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
7487                 break;
7488         default:
7489                 return -EINVAL;
7490         }
7491
7492 config_tc:
7493         /* Generate TC map for number of tc requested */
7494         for (i = 0; i < num_tc; i++)
7495                 enabled_tc |= BIT(i);
7496
7497         /* Requesting same TC configuration as already enabled */
7498         if (enabled_tc == vsi->tc_config.enabled_tc &&
7499             mode != TC_MQPRIO_MODE_CHANNEL)
7500                 return 0;
7501
7502         /* Quiesce VSI queues */
7503         i40e_quiesce_vsi(vsi);
7504
7505         if (!hw && !(pf->flags & I40E_FLAG_TC_MQPRIO))
7506                 i40e_remove_queue_channels(vsi);
7507
7508         /* Configure VSI for enabled TCs */
7509         ret = i40e_vsi_config_tc(vsi, enabled_tc);
7510         if (ret) {
7511                 netdev_info(netdev, "Failed configuring TC for VSI seid=%d\n",
7512                             vsi->seid);
7513                 need_reset = true;
7514                 goto exit;
7515         } else {
7516                 dev_info(&vsi->back->pdev->dev,
7517                          "Setup channel (id:%u) utilizing num_queues %d\n",
7518                          vsi->seid, vsi->tc_config.tc_info[0].qcount);
7519         }
7520
7521         if (pf->flags & I40E_FLAG_TC_MQPRIO) {
7522                 if (vsi->mqprio_qopt.max_rate[0]) {
7523                         u64 max_tx_rate = vsi->mqprio_qopt.max_rate[0];
7524
7525                         do_div(max_tx_rate, I40E_BW_MBPS_DIVISOR);
7526                         ret = i40e_set_bw_limit(vsi, vsi->seid, max_tx_rate);
7527                         if (!ret) {
7528                                 u64 credits = max_tx_rate;
7529
7530                                 do_div(credits, I40E_BW_CREDIT_DIVISOR);
7531                                 dev_dbg(&vsi->back->pdev->dev,
7532                                         "Set tx rate of %llu Mbps (count of 50Mbps %llu) for vsi->seid %u\n",
7533                                         max_tx_rate,
7534                                         credits,
7535                                         vsi->seid);
7536                         } else {
7537                                 need_reset = true;
7538                                 goto exit;
7539                         }
7540                 }
7541                 ret = i40e_configure_queue_channels(vsi);
7542                 if (ret) {
7543                         vsi->num_queue_pairs = old_queue_pairs;
7544                         netdev_info(netdev,
7545                                     "Failed configuring queue channels\n");
7546                         need_reset = true;
7547                         goto exit;
7548                 }
7549         }
7550
7551 exit:
7552         /* Reset the configuration data to defaults, only TC0 is enabled */
7553         if (need_reset) {
7554                 i40e_vsi_set_default_tc_config(vsi);
7555                 need_reset = false;
7556         }
7557
7558         /* Unquiesce VSI */
7559         i40e_unquiesce_vsi(vsi);
7560         return ret;
7561 }
7562
7563 /**
7564  * i40e_set_cld_element - sets cloud filter element data
7565  * @filter: cloud filter rule
7566  * @cld: ptr to cloud filter element data
7567  *
7568  * This is helper function to copy data into cloud filter element
7569  **/
7570 static inline void
7571 i40e_set_cld_element(struct i40e_cloud_filter *filter,
7572                      struct i40e_aqc_cloud_filters_element_data *cld)
7573 {
7574         int i, j;
7575         u32 ipa;
7576
7577         memset(cld, 0, sizeof(*cld));
7578         ether_addr_copy(cld->outer_mac, filter->dst_mac);
7579         ether_addr_copy(cld->inner_mac, filter->src_mac);
7580
7581         if (filter->n_proto != ETH_P_IP && filter->n_proto != ETH_P_IPV6)
7582                 return;
7583
7584         if (filter->n_proto == ETH_P_IPV6) {
7585 #define IPV6_MAX_INDEX  (ARRAY_SIZE(filter->dst_ipv6) - 1)
7586                 for (i = 0, j = 0; i < ARRAY_SIZE(filter->dst_ipv6);
7587                      i++, j += 2) {
7588                         ipa = be32_to_cpu(filter->dst_ipv6[IPV6_MAX_INDEX - i]);
7589                         ipa = cpu_to_le32(ipa);
7590                         memcpy(&cld->ipaddr.raw_v6.data[j], &ipa, sizeof(ipa));
7591                 }
7592         } else {
7593                 ipa = be32_to_cpu(filter->dst_ipv4);
7594                 memcpy(&cld->ipaddr.v4.data, &ipa, sizeof(ipa));
7595         }
7596
7597         cld->inner_vlan = cpu_to_le16(ntohs(filter->vlan_id));
7598
7599         /* tenant_id is not supported by FW now, once the support is enabled
7600          * fill the cld->tenant_id with cpu_to_le32(filter->tenant_id)
7601          */
7602         if (filter->tenant_id)
7603                 return;
7604 }
7605
7606 /**
7607  * i40e_add_del_cloud_filter - Add/del cloud filter
7608  * @vsi: pointer to VSI
7609  * @filter: cloud filter rule
7610  * @add: if true, add, if false, delete
7611  *
7612  * Add or delete a cloud filter for a specific flow spec.
7613  * Returns 0 if the filter were successfully added.
7614  **/
7615 int i40e_add_del_cloud_filter(struct i40e_vsi *vsi,
7616                               struct i40e_cloud_filter *filter, bool add)
7617 {
7618         struct i40e_aqc_cloud_filters_element_data cld_filter;
7619         struct i40e_pf *pf = vsi->back;
7620         int ret;
7621         static const u16 flag_table[128] = {
7622                 [I40E_CLOUD_FILTER_FLAGS_OMAC]  =
7623                         I40E_AQC_ADD_CLOUD_FILTER_OMAC,
7624                 [I40E_CLOUD_FILTER_FLAGS_IMAC]  =
7625                         I40E_AQC_ADD_CLOUD_FILTER_IMAC,
7626                 [I40E_CLOUD_FILTER_FLAGS_IMAC_IVLAN]  =
7627                         I40E_AQC_ADD_CLOUD_FILTER_IMAC_IVLAN,
7628                 [I40E_CLOUD_FILTER_FLAGS_IMAC_TEN_ID] =
7629                         I40E_AQC_ADD_CLOUD_FILTER_IMAC_TEN_ID,
7630                 [I40E_CLOUD_FILTER_FLAGS_OMAC_TEN_ID_IMAC] =
7631                         I40E_AQC_ADD_CLOUD_FILTER_OMAC_TEN_ID_IMAC,
7632                 [I40E_CLOUD_FILTER_FLAGS_IMAC_IVLAN_TEN_ID] =
7633                         I40E_AQC_ADD_CLOUD_FILTER_IMAC_IVLAN_TEN_ID,
7634                 [I40E_CLOUD_FILTER_FLAGS_IIP] =
7635                         I40E_AQC_ADD_CLOUD_FILTER_IIP,
7636         };
7637
7638         if (filter->flags >= ARRAY_SIZE(flag_table))
7639                 return I40E_ERR_CONFIG;
7640
7641         /* copy element needed to add cloud filter from filter */
7642         i40e_set_cld_element(filter, &cld_filter);
7643
7644         if (filter->tunnel_type != I40E_CLOUD_TNL_TYPE_NONE)
7645                 cld_filter.flags = cpu_to_le16(filter->tunnel_type <<
7646                                              I40E_AQC_ADD_CLOUD_TNL_TYPE_SHIFT);
7647
7648         if (filter->n_proto == ETH_P_IPV6)
7649                 cld_filter.flags |= cpu_to_le16(flag_table[filter->flags] |
7650                                                 I40E_AQC_ADD_CLOUD_FLAGS_IPV6);
7651         else
7652                 cld_filter.flags |= cpu_to_le16(flag_table[filter->flags] |
7653                                                 I40E_AQC_ADD_CLOUD_FLAGS_IPV4);
7654
7655         if (add)
7656                 ret = i40e_aq_add_cloud_filters(&pf->hw, filter->seid,
7657                                                 &cld_filter, 1);
7658         else
7659                 ret = i40e_aq_rem_cloud_filters(&pf->hw, filter->seid,
7660                                                 &cld_filter, 1);
7661         if (ret)
7662                 dev_dbg(&pf->pdev->dev,
7663                         "Failed to %s cloud filter using l4 port %u, err %d aq_err %d\n",
7664                         add ? "add" : "delete", filter->dst_port, ret,
7665                         pf->hw.aq.asq_last_status);
7666         else
7667                 dev_info(&pf->pdev->dev,
7668                          "%s cloud filter for VSI: %d\n",
7669                          add ? "Added" : "Deleted", filter->seid);
7670         return ret;
7671 }
7672
7673 /**
7674  * i40e_add_del_cloud_filter_big_buf - Add/del cloud filter using big_buf
7675  * @vsi: pointer to VSI
7676  * @filter: cloud filter rule
7677  * @add: if true, add, if false, delete
7678  *
7679  * Add or delete a cloud filter for a specific flow spec using big buffer.
7680  * Returns 0 if the filter were successfully added.
7681  **/
7682 int i40e_add_del_cloud_filter_big_buf(struct i40e_vsi *vsi,
7683                                       struct i40e_cloud_filter *filter,
7684                                       bool add)
7685 {
7686         struct i40e_aqc_cloud_filters_element_bb cld_filter;
7687         struct i40e_pf *pf = vsi->back;
7688         int ret;
7689
7690         /* Both (src/dst) valid mac_addr are not supported */
7691         if ((is_valid_ether_addr(filter->dst_mac) &&
7692              is_valid_ether_addr(filter->src_mac)) ||
7693             (is_multicast_ether_addr(filter->dst_mac) &&
7694              is_multicast_ether_addr(filter->src_mac)))
7695                 return -EOPNOTSUPP;
7696
7697         /* Big buffer cloud filter needs 'L4 port' to be non-zero. Also, UDP
7698          * ports are not supported via big buffer now.
7699          */
7700         if (!filter->dst_port || filter->ip_proto == IPPROTO_UDP)
7701                 return -EOPNOTSUPP;
7702
7703         /* adding filter using src_port/src_ip is not supported at this stage */
7704         if (filter->src_port || filter->src_ipv4 ||
7705             !ipv6_addr_any(&filter->ip.v6.src_ip6))
7706                 return -EOPNOTSUPP;
7707
7708         /* copy element needed to add cloud filter from filter */
7709         i40e_set_cld_element(filter, &cld_filter.element);
7710
7711         if (is_valid_ether_addr(filter->dst_mac) ||
7712             is_valid_ether_addr(filter->src_mac) ||
7713             is_multicast_ether_addr(filter->dst_mac) ||
7714             is_multicast_ether_addr(filter->src_mac)) {
7715                 /* MAC + IP : unsupported mode */
7716                 if (filter->dst_ipv4)
7717                         return -EOPNOTSUPP;
7718
7719                 /* since we validated that L4 port must be valid before
7720                  * we get here, start with respective "flags" value
7721                  * and update if vlan is present or not
7722                  */
7723                 cld_filter.element.flags =
7724                         cpu_to_le16(I40E_AQC_ADD_CLOUD_FILTER_MAC_PORT);
7725
7726                 if (filter->vlan_id) {
7727                         cld_filter.element.flags =
7728                         cpu_to_le16(I40E_AQC_ADD_CLOUD_FILTER_MAC_VLAN_PORT);
7729                 }
7730
7731         } else if (filter->dst_ipv4 ||
7732                    !ipv6_addr_any(&filter->ip.v6.dst_ip6)) {
7733                 cld_filter.element.flags =
7734                                 cpu_to_le16(I40E_AQC_ADD_CLOUD_FILTER_IP_PORT);
7735                 if (filter->n_proto == ETH_P_IPV6)
7736                         cld_filter.element.flags |=
7737                                 cpu_to_le16(I40E_AQC_ADD_CLOUD_FLAGS_IPV6);
7738                 else
7739                         cld_filter.element.flags |=
7740                                 cpu_to_le16(I40E_AQC_ADD_CLOUD_FLAGS_IPV4);
7741         } else {
7742                 dev_err(&pf->pdev->dev,
7743                         "either mac or ip has to be valid for cloud filter\n");
7744                 return -EINVAL;
7745         }
7746
7747         /* Now copy L4 port in Byte 6..7 in general fields */
7748         cld_filter.general_fields[I40E_AQC_ADD_CLOUD_FV_FLU_0X16_WORD0] =
7749                                                 be16_to_cpu(filter->dst_port);
7750
7751         if (add) {
7752                 /* Validate current device switch mode, change if necessary */
7753                 ret = i40e_validate_and_set_switch_mode(vsi);
7754                 if (ret) {
7755                         dev_err(&pf->pdev->dev,
7756                                 "failed to set switch mode, ret %d\n",
7757                                 ret);
7758                         return ret;
7759                 }
7760
7761                 ret = i40e_aq_add_cloud_filters_bb(&pf->hw, filter->seid,
7762                                                    &cld_filter, 1);
7763         } else {
7764                 ret = i40e_aq_rem_cloud_filters_bb(&pf->hw, filter->seid,
7765                                                    &cld_filter, 1);
7766         }
7767
7768         if (ret)
7769                 dev_dbg(&pf->pdev->dev,
7770                         "Failed to %s cloud filter(big buffer) err %d aq_err %d\n",
7771                         add ? "add" : "delete", ret, pf->hw.aq.asq_last_status);
7772         else
7773                 dev_info(&pf->pdev->dev,
7774                          "%s cloud filter for VSI: %d, L4 port: %d\n",
7775                          add ? "add" : "delete", filter->seid,
7776                          ntohs(filter->dst_port));
7777         return ret;
7778 }
7779
7780 /**
7781  * i40e_parse_cls_flower - Parse tc flower filters provided by kernel
7782  * @vsi: Pointer to VSI
7783  * @cls_flower: Pointer to struct flow_cls_offload
7784  * @filter: Pointer to cloud filter structure
7785  *
7786  **/
7787 static int i40e_parse_cls_flower(struct i40e_vsi *vsi,
7788                                  struct flow_cls_offload *f,
7789                                  struct i40e_cloud_filter *filter)
7790 {
7791         struct flow_rule *rule = flow_cls_offload_flow_rule(f);
7792         struct flow_dissector *dissector = rule->match.dissector;
7793         u16 n_proto_mask = 0, n_proto_key = 0, addr_type = 0;
7794         struct i40e_pf *pf = vsi->back;
7795         u8 field_flags = 0;
7796
7797         if (dissector->used_keys &
7798             ~(BIT(FLOW_DISSECTOR_KEY_CONTROL) |
7799               BIT(FLOW_DISSECTOR_KEY_BASIC) |
7800               BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) |
7801               BIT(FLOW_DISSECTOR_KEY_VLAN) |
7802               BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) |
7803               BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) |
7804               BIT(FLOW_DISSECTOR_KEY_PORTS) |
7805               BIT(FLOW_DISSECTOR_KEY_ENC_KEYID))) {
7806                 dev_err(&pf->pdev->dev, "Unsupported key used: 0x%x\n",
7807                         dissector->used_keys);
7808                 return -EOPNOTSUPP;
7809         }
7810
7811         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_KEYID)) {
7812                 struct flow_match_enc_keyid match;
7813
7814                 flow_rule_match_enc_keyid(rule, &match);
7815                 if (match.mask->keyid != 0)
7816                         field_flags |= I40E_CLOUD_FIELD_TEN_ID;
7817
7818                 filter->tenant_id = be32_to_cpu(match.key->keyid);
7819         }
7820
7821         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) {
7822                 struct flow_match_basic match;
7823
7824                 flow_rule_match_basic(rule, &match);
7825                 n_proto_key = ntohs(match.key->n_proto);
7826                 n_proto_mask = ntohs(match.mask->n_proto);
7827
7828                 if (n_proto_key == ETH_P_ALL) {
7829                         n_proto_key = 0;
7830                         n_proto_mask = 0;
7831                 }
7832                 filter->n_proto = n_proto_key & n_proto_mask;
7833                 filter->ip_proto = match.key->ip_proto;
7834         }
7835
7836         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
7837                 struct flow_match_eth_addrs match;
7838
7839                 flow_rule_match_eth_addrs(rule, &match);
7840
7841                 /* use is_broadcast and is_zero to check for all 0xf or 0 */
7842                 if (!is_zero_ether_addr(match.mask->dst)) {
7843                         if (is_broadcast_ether_addr(match.mask->dst)) {
7844                                 field_flags |= I40E_CLOUD_FIELD_OMAC;
7845                         } else {
7846                                 dev_err(&pf->pdev->dev, "Bad ether dest mask %pM\n",
7847                                         match.mask->dst);
7848                                 return I40E_ERR_CONFIG;
7849                         }
7850                 }
7851
7852                 if (!is_zero_ether_addr(match.mask->src)) {
7853                         if (is_broadcast_ether_addr(match.mask->src)) {
7854                                 field_flags |= I40E_CLOUD_FIELD_IMAC;
7855                         } else {
7856                                 dev_err(&pf->pdev->dev, "Bad ether src mask %pM\n",
7857                                         match.mask->src);
7858                                 return I40E_ERR_CONFIG;
7859                         }
7860                 }
7861                 ether_addr_copy(filter->dst_mac, match.key->dst);
7862                 ether_addr_copy(filter->src_mac, match.key->src);
7863         }
7864
7865         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN)) {
7866                 struct flow_match_vlan match;
7867
7868                 flow_rule_match_vlan(rule, &match);
7869                 if (match.mask->vlan_id) {
7870                         if (match.mask->vlan_id == VLAN_VID_MASK) {
7871                                 field_flags |= I40E_CLOUD_FIELD_IVLAN;
7872
7873                         } else {
7874                                 dev_err(&pf->pdev->dev, "Bad vlan mask 0x%04x\n",
7875                                         match.mask->vlan_id);
7876                                 return I40E_ERR_CONFIG;
7877                         }
7878                 }
7879
7880                 filter->vlan_id = cpu_to_be16(match.key->vlan_id);
7881         }
7882
7883         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CONTROL)) {
7884                 struct flow_match_control match;
7885
7886                 flow_rule_match_control(rule, &match);
7887                 addr_type = match.key->addr_type;
7888         }
7889
7890         if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
7891                 struct flow_match_ipv4_addrs match;
7892
7893                 flow_rule_match_ipv4_addrs(rule, &match);
7894                 if (match.mask->dst) {
7895                         if (match.mask->dst == cpu_to_be32(0xffffffff)) {
7896                                 field_flags |= I40E_CLOUD_FIELD_IIP;
7897                         } else {
7898                                 dev_err(&pf->pdev->dev, "Bad ip dst mask %pI4b\n",
7899                                         &match.mask->dst);
7900                                 return I40E_ERR_CONFIG;
7901                         }
7902                 }
7903
7904                 if (match.mask->src) {
7905                         if (match.mask->src == cpu_to_be32(0xffffffff)) {
7906                                 field_flags |= I40E_CLOUD_FIELD_IIP;
7907                         } else {
7908                                 dev_err(&pf->pdev->dev, "Bad ip src mask %pI4b\n",
7909                                         &match.mask->src);
7910                                 return I40E_ERR_CONFIG;
7911                         }
7912                 }
7913
7914                 if (field_flags & I40E_CLOUD_FIELD_TEN_ID) {
7915                         dev_err(&pf->pdev->dev, "Tenant id not allowed for ip filter\n");
7916                         return I40E_ERR_CONFIG;
7917                 }
7918                 filter->dst_ipv4 = match.key->dst;
7919                 filter->src_ipv4 = match.key->src;
7920         }
7921
7922         if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
7923                 struct flow_match_ipv6_addrs match;
7924
7925                 flow_rule_match_ipv6_addrs(rule, &match);
7926
7927                 /* src and dest IPV6 address should not be LOOPBACK
7928                  * (0:0:0:0:0:0:0:1), which can be represented as ::1
7929                  */
7930                 if (ipv6_addr_loopback(&match.key->dst) ||
7931                     ipv6_addr_loopback(&match.key->src)) {
7932                         dev_err(&pf->pdev->dev,
7933                                 "Bad ipv6, addr is LOOPBACK\n");
7934                         return I40E_ERR_CONFIG;
7935                 }
7936                 if (!ipv6_addr_any(&match.mask->dst) ||
7937                     !ipv6_addr_any(&match.mask->src))
7938                         field_flags |= I40E_CLOUD_FIELD_IIP;
7939
7940                 memcpy(&filter->src_ipv6, &match.key->src.s6_addr32,
7941                        sizeof(filter->src_ipv6));
7942                 memcpy(&filter->dst_ipv6, &match.key->dst.s6_addr32,
7943                        sizeof(filter->dst_ipv6));
7944         }
7945
7946         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PORTS)) {
7947                 struct flow_match_ports match;
7948
7949                 flow_rule_match_ports(rule, &match);
7950                 if (match.mask->src) {
7951                         if (match.mask->src == cpu_to_be16(0xffff)) {
7952                                 field_flags |= I40E_CLOUD_FIELD_IIP;
7953                         } else {
7954                                 dev_err(&pf->pdev->dev, "Bad src port mask 0x%04x\n",
7955                                         be16_to_cpu(match.mask->src));
7956                                 return I40E_ERR_CONFIG;
7957                         }
7958                 }
7959
7960                 if (match.mask->dst) {
7961                         if (match.mask->dst == cpu_to_be16(0xffff)) {
7962                                 field_flags |= I40E_CLOUD_FIELD_IIP;
7963                         } else {
7964                                 dev_err(&pf->pdev->dev, "Bad dst port mask 0x%04x\n",
7965                                         be16_to_cpu(match.mask->dst));
7966                                 return I40E_ERR_CONFIG;
7967                         }
7968                 }
7969
7970                 filter->dst_port = match.key->dst;
7971                 filter->src_port = match.key->src;
7972
7973                 switch (filter->ip_proto) {
7974                 case IPPROTO_TCP:
7975                 case IPPROTO_UDP:
7976                         break;
7977                 default:
7978                         dev_err(&pf->pdev->dev,
7979                                 "Only UDP and TCP transport are supported\n");
7980                         return -EINVAL;
7981                 }
7982         }
7983         filter->flags = field_flags;
7984         return 0;
7985 }
7986
7987 /**
7988  * i40e_handle_tclass: Forward to a traffic class on the device
7989  * @vsi: Pointer to VSI
7990  * @tc: traffic class index on the device
7991  * @filter: Pointer to cloud filter structure
7992  *
7993  **/
7994 static int i40e_handle_tclass(struct i40e_vsi *vsi, u32 tc,
7995                               struct i40e_cloud_filter *filter)
7996 {
7997         struct i40e_channel *ch, *ch_tmp;
7998
7999         /* direct to a traffic class on the same device */
8000         if (tc == 0) {
8001                 filter->seid = vsi->seid;
8002                 return 0;
8003         } else if (vsi->tc_config.enabled_tc & BIT(tc)) {
8004                 if (!filter->dst_port) {
8005                         dev_err(&vsi->back->pdev->dev,
8006                                 "Specify destination port to direct to traffic class that is not default\n");
8007                         return -EINVAL;
8008                 }
8009                 if (list_empty(&vsi->ch_list))
8010                         return -EINVAL;
8011                 list_for_each_entry_safe(ch, ch_tmp, &vsi->ch_list,
8012                                          list) {
8013                         if (ch->seid == vsi->tc_seid_map[tc])
8014                                 filter->seid = ch->seid;
8015                 }
8016                 return 0;
8017         }
8018         dev_err(&vsi->back->pdev->dev, "TC is not enabled\n");
8019         return -EINVAL;
8020 }
8021
8022 /**
8023  * i40e_configure_clsflower - Configure tc flower filters
8024  * @vsi: Pointer to VSI
8025  * @cls_flower: Pointer to struct flow_cls_offload
8026  *
8027  **/
8028 static int i40e_configure_clsflower(struct i40e_vsi *vsi,
8029                                     struct flow_cls_offload *cls_flower)
8030 {
8031         int tc = tc_classid_to_hwtc(vsi->netdev, cls_flower->classid);
8032         struct i40e_cloud_filter *filter = NULL;
8033         struct i40e_pf *pf = vsi->back;
8034         int err = 0;
8035
8036         if (tc < 0) {
8037                 dev_err(&vsi->back->pdev->dev, "Invalid traffic class\n");
8038                 return -EOPNOTSUPP;
8039         }
8040
8041         if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
8042             test_bit(__I40E_RESET_INTR_RECEIVED, pf->state))
8043                 return -EBUSY;
8044
8045         if (pf->fdir_pf_active_filters ||
8046             (!hlist_empty(&pf->fdir_filter_list))) {
8047                 dev_err(&vsi->back->pdev->dev,
8048                         "Flow Director Sideband filters exists, turn ntuple off to configure cloud filters\n");
8049                 return -EINVAL;
8050         }
8051
8052         if (vsi->back->flags & I40E_FLAG_FD_SB_ENABLED) {
8053                 dev_err(&vsi->back->pdev->dev,
8054                         "Disable Flow Director Sideband, configuring Cloud filters via tc-flower\n");
8055                 vsi->back->flags &= ~I40E_FLAG_FD_SB_ENABLED;
8056                 vsi->back->flags |= I40E_FLAG_FD_SB_TO_CLOUD_FILTER;
8057         }
8058
8059         filter = kzalloc(sizeof(*filter), GFP_KERNEL);
8060         if (!filter)
8061                 return -ENOMEM;
8062
8063         filter->cookie = cls_flower->cookie;
8064
8065         err = i40e_parse_cls_flower(vsi, cls_flower, filter);
8066         if (err < 0)
8067                 goto err;
8068
8069         err = i40e_handle_tclass(vsi, tc, filter);
8070         if (err < 0)
8071                 goto err;
8072
8073         /* Add cloud filter */
8074         if (filter->dst_port)
8075                 err = i40e_add_del_cloud_filter_big_buf(vsi, filter, true);
8076         else
8077                 err = i40e_add_del_cloud_filter(vsi, filter, true);
8078
8079         if (err) {
8080                 dev_err(&pf->pdev->dev,
8081                         "Failed to add cloud filter, err %s\n",
8082                         i40e_stat_str(&pf->hw, err));
8083                 goto err;
8084         }
8085
8086         /* add filter to the ordered list */
8087         INIT_HLIST_NODE(&filter->cloud_node);
8088
8089         hlist_add_head(&filter->cloud_node, &pf->cloud_filter_list);
8090
8091         pf->num_cloud_filters++;
8092
8093         return err;
8094 err:
8095         kfree(filter);
8096         return err;
8097 }
8098
8099 /**
8100  * i40e_find_cloud_filter - Find the could filter in the list
8101  * @vsi: Pointer to VSI
8102  * @cookie: filter specific cookie
8103  *
8104  **/
8105 static struct i40e_cloud_filter *i40e_find_cloud_filter(struct i40e_vsi *vsi,
8106                                                         unsigned long *cookie)
8107 {
8108         struct i40e_cloud_filter *filter = NULL;
8109         struct hlist_node *node2;
8110
8111         hlist_for_each_entry_safe(filter, node2,
8112                                   &vsi->back->cloud_filter_list, cloud_node)
8113                 if (!memcmp(cookie, &filter->cookie, sizeof(filter->cookie)))
8114                         return filter;
8115         return NULL;
8116 }
8117
8118 /**
8119  * i40e_delete_clsflower - Remove tc flower filters
8120  * @vsi: Pointer to VSI
8121  * @cls_flower: Pointer to struct flow_cls_offload
8122  *
8123  **/
8124 static int i40e_delete_clsflower(struct i40e_vsi *vsi,
8125                                  struct flow_cls_offload *cls_flower)
8126 {
8127         struct i40e_cloud_filter *filter = NULL;
8128         struct i40e_pf *pf = vsi->back;
8129         int err = 0;
8130
8131         filter = i40e_find_cloud_filter(vsi, &cls_flower->cookie);
8132
8133         if (!filter)
8134                 return -EINVAL;
8135
8136         hash_del(&filter->cloud_node);
8137
8138         if (filter->dst_port)
8139                 err = i40e_add_del_cloud_filter_big_buf(vsi, filter, false);
8140         else
8141                 err = i40e_add_del_cloud_filter(vsi, filter, false);
8142
8143         kfree(filter);
8144         if (err) {
8145                 dev_err(&pf->pdev->dev,
8146                         "Failed to delete cloud filter, err %s\n",
8147                         i40e_stat_str(&pf->hw, err));
8148                 return i40e_aq_rc_to_posix(err, pf->hw.aq.asq_last_status);
8149         }
8150
8151         pf->num_cloud_filters--;
8152         if (!pf->num_cloud_filters)
8153                 if ((pf->flags & I40E_FLAG_FD_SB_TO_CLOUD_FILTER) &&
8154                     !(pf->flags & I40E_FLAG_FD_SB_INACTIVE)) {
8155                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8156                         pf->flags &= ~I40E_FLAG_FD_SB_TO_CLOUD_FILTER;
8157                         pf->flags &= ~I40E_FLAG_FD_SB_INACTIVE;
8158                 }
8159         return 0;
8160 }
8161
8162 /**
8163  * i40e_setup_tc_cls_flower - flower classifier offloads
8164  * @netdev: net device to configure
8165  * @type_data: offload data
8166  **/
8167 static int i40e_setup_tc_cls_flower(struct i40e_netdev_priv *np,
8168                                     struct flow_cls_offload *cls_flower)
8169 {
8170         struct i40e_vsi *vsi = np->vsi;
8171
8172         switch (cls_flower->command) {
8173         case FLOW_CLS_REPLACE:
8174                 return i40e_configure_clsflower(vsi, cls_flower);
8175         case FLOW_CLS_DESTROY:
8176                 return i40e_delete_clsflower(vsi, cls_flower);
8177         case FLOW_CLS_STATS:
8178                 return -EOPNOTSUPP;
8179         default:
8180                 return -EOPNOTSUPP;
8181         }
8182 }
8183
8184 static int i40e_setup_tc_block_cb(enum tc_setup_type type, void *type_data,
8185                                   void *cb_priv)
8186 {
8187         struct i40e_netdev_priv *np = cb_priv;
8188
8189         if (!tc_cls_can_offload_and_chain0(np->vsi->netdev, type_data))
8190                 return -EOPNOTSUPP;
8191
8192         switch (type) {
8193         case TC_SETUP_CLSFLOWER:
8194                 return i40e_setup_tc_cls_flower(np, type_data);
8195
8196         default:
8197                 return -EOPNOTSUPP;
8198         }
8199 }
8200
8201 static LIST_HEAD(i40e_block_cb_list);
8202
8203 static int __i40e_setup_tc(struct net_device *netdev, enum tc_setup_type type,
8204                            void *type_data)
8205 {
8206         struct i40e_netdev_priv *np = netdev_priv(netdev);
8207
8208         switch (type) {
8209         case TC_SETUP_QDISC_MQPRIO:
8210                 return i40e_setup_tc(netdev, type_data);
8211         case TC_SETUP_BLOCK:
8212                 return flow_block_cb_setup_simple(type_data,
8213                                                   &i40e_block_cb_list,
8214                                                   i40e_setup_tc_block_cb,
8215                                                   np, np, true);
8216         default:
8217                 return -EOPNOTSUPP;
8218         }
8219 }
8220
8221 /**
8222  * i40e_open - Called when a network interface is made active
8223  * @netdev: network interface device structure
8224  *
8225  * The open entry point is called when a network interface is made
8226  * active by the system (IFF_UP).  At this point all resources needed
8227  * for transmit and receive operations are allocated, the interrupt
8228  * handler is registered with the OS, the netdev watchdog subtask is
8229  * enabled, and the stack is notified that the interface is ready.
8230  *
8231  * Returns 0 on success, negative value on failure
8232  **/
8233 int i40e_open(struct net_device *netdev)
8234 {
8235         struct i40e_netdev_priv *np = netdev_priv(netdev);
8236         struct i40e_vsi *vsi = np->vsi;
8237         struct i40e_pf *pf = vsi->back;
8238         int err;
8239
8240         /* disallow open during test or if eeprom is broken */
8241         if (test_bit(__I40E_TESTING, pf->state) ||
8242             test_bit(__I40E_BAD_EEPROM, pf->state))
8243                 return -EBUSY;
8244
8245         netif_carrier_off(netdev);
8246
8247         if (i40e_force_link_state(pf, true))
8248                 return -EAGAIN;
8249
8250         err = i40e_vsi_open(vsi);
8251         if (err)
8252                 return err;
8253
8254         /* configure global TSO hardware offload settings */
8255         wr32(&pf->hw, I40E_GLLAN_TSOMSK_F, be32_to_cpu(TCP_FLAG_PSH |
8256                                                        TCP_FLAG_FIN) >> 16);
8257         wr32(&pf->hw, I40E_GLLAN_TSOMSK_M, be32_to_cpu(TCP_FLAG_PSH |
8258                                                        TCP_FLAG_FIN |
8259                                                        TCP_FLAG_CWR) >> 16);
8260         wr32(&pf->hw, I40E_GLLAN_TSOMSK_L, be32_to_cpu(TCP_FLAG_CWR) >> 16);
8261
8262         udp_tunnel_get_rx_info(netdev);
8263
8264         return 0;
8265 }
8266
8267 /**
8268  * i40e_vsi_open -
8269  * @vsi: the VSI to open
8270  *
8271  * Finish initialization of the VSI.
8272  *
8273  * Returns 0 on success, negative value on failure
8274  *
8275  * Note: expects to be called while under rtnl_lock()
8276  **/
8277 int i40e_vsi_open(struct i40e_vsi *vsi)
8278 {
8279         struct i40e_pf *pf = vsi->back;
8280         char int_name[I40E_INT_NAME_STR_LEN];
8281         int err;
8282
8283         /* allocate descriptors */
8284         err = i40e_vsi_setup_tx_resources(vsi);
8285         if (err)
8286                 goto err_setup_tx;
8287         err = i40e_vsi_setup_rx_resources(vsi);
8288         if (err)
8289                 goto err_setup_rx;
8290
8291         err = i40e_vsi_configure(vsi);
8292         if (err)
8293                 goto err_setup_rx;
8294
8295         if (vsi->netdev) {
8296                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s",
8297                          dev_driver_string(&pf->pdev->dev), vsi->netdev->name);
8298                 err = i40e_vsi_request_irq(vsi, int_name);
8299                 if (err)
8300                         goto err_setup_rx;
8301
8302                 /* Notify the stack of the actual queue counts. */
8303                 err = netif_set_real_num_tx_queues(vsi->netdev,
8304                                                    vsi->num_queue_pairs);
8305                 if (err)
8306                         goto err_set_queues;
8307
8308                 err = netif_set_real_num_rx_queues(vsi->netdev,
8309                                                    vsi->num_queue_pairs);
8310                 if (err)
8311                         goto err_set_queues;
8312
8313         } else if (vsi->type == I40E_VSI_FDIR) {
8314                 snprintf(int_name, sizeof(int_name) - 1, "%s-%s:fdir",
8315                          dev_driver_string(&pf->pdev->dev),
8316                          dev_name(&pf->pdev->dev));
8317                 err = i40e_vsi_request_irq(vsi, int_name);
8318
8319         } else {
8320                 err = -EINVAL;
8321                 goto err_setup_rx;
8322         }
8323
8324         err = i40e_up_complete(vsi);
8325         if (err)
8326                 goto err_up_complete;
8327
8328         return 0;
8329
8330 err_up_complete:
8331         i40e_down(vsi);
8332 err_set_queues:
8333         i40e_vsi_free_irq(vsi);
8334 err_setup_rx:
8335         i40e_vsi_free_rx_resources(vsi);
8336 err_setup_tx:
8337         i40e_vsi_free_tx_resources(vsi);
8338         if (vsi == pf->vsi[pf->lan_vsi])
8339                 i40e_do_reset(pf, I40E_PF_RESET_FLAG, true);
8340
8341         return err;
8342 }
8343
8344 /**
8345  * i40e_fdir_filter_exit - Cleans up the Flow Director accounting
8346  * @pf: Pointer to PF
8347  *
8348  * This function destroys the hlist where all the Flow Director
8349  * filters were saved.
8350  **/
8351 static void i40e_fdir_filter_exit(struct i40e_pf *pf)
8352 {
8353         struct i40e_fdir_filter *filter;
8354         struct i40e_flex_pit *pit_entry, *tmp;
8355         struct hlist_node *node2;
8356
8357         hlist_for_each_entry_safe(filter, node2,
8358                                   &pf->fdir_filter_list, fdir_node) {
8359                 hlist_del(&filter->fdir_node);
8360                 kfree(filter);
8361         }
8362
8363         list_for_each_entry_safe(pit_entry, tmp, &pf->l3_flex_pit_list, list) {
8364                 list_del(&pit_entry->list);
8365                 kfree(pit_entry);
8366         }
8367         INIT_LIST_HEAD(&pf->l3_flex_pit_list);
8368
8369         list_for_each_entry_safe(pit_entry, tmp, &pf->l4_flex_pit_list, list) {
8370                 list_del(&pit_entry->list);
8371                 kfree(pit_entry);
8372         }
8373         INIT_LIST_HEAD(&pf->l4_flex_pit_list);
8374
8375         pf->fdir_pf_active_filters = 0;
8376         pf->fd_tcp4_filter_cnt = 0;
8377         pf->fd_udp4_filter_cnt = 0;
8378         pf->fd_sctp4_filter_cnt = 0;
8379         pf->fd_ip4_filter_cnt = 0;
8380
8381         /* Reprogram the default input set for TCP/IPv4 */
8382         i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV4_TCP,
8383                                 I40E_L3_SRC_MASK | I40E_L3_DST_MASK |
8384                                 I40E_L4_SRC_MASK | I40E_L4_DST_MASK);
8385
8386         /* Reprogram the default input set for UDP/IPv4 */
8387         i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV4_UDP,
8388                                 I40E_L3_SRC_MASK | I40E_L3_DST_MASK |
8389                                 I40E_L4_SRC_MASK | I40E_L4_DST_MASK);
8390
8391         /* Reprogram the default input set for SCTP/IPv4 */
8392         i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV4_SCTP,
8393                                 I40E_L3_SRC_MASK | I40E_L3_DST_MASK |
8394                                 I40E_L4_SRC_MASK | I40E_L4_DST_MASK);
8395
8396         /* Reprogram the default input set for Other/IPv4 */
8397         i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV4_OTHER,
8398                                 I40E_L3_SRC_MASK | I40E_L3_DST_MASK);
8399
8400         i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_FRAG_IPV4,
8401                                 I40E_L3_SRC_MASK | I40E_L3_DST_MASK);
8402 }
8403
8404 /**
8405  * i40e_cloud_filter_exit - Cleans up the cloud filters
8406  * @pf: Pointer to PF
8407  *
8408  * This function destroys the hlist where all the cloud filters
8409  * were saved.
8410  **/
8411 static void i40e_cloud_filter_exit(struct i40e_pf *pf)
8412 {
8413         struct i40e_cloud_filter *cfilter;
8414         struct hlist_node *node;
8415
8416         hlist_for_each_entry_safe(cfilter, node,
8417                                   &pf->cloud_filter_list, cloud_node) {
8418                 hlist_del(&cfilter->cloud_node);
8419                 kfree(cfilter);
8420         }
8421         pf->num_cloud_filters = 0;
8422
8423         if ((pf->flags & I40E_FLAG_FD_SB_TO_CLOUD_FILTER) &&
8424             !(pf->flags & I40E_FLAG_FD_SB_INACTIVE)) {
8425                 pf->flags |= I40E_FLAG_FD_SB_ENABLED;
8426                 pf->flags &= ~I40E_FLAG_FD_SB_TO_CLOUD_FILTER;
8427                 pf->flags &= ~I40E_FLAG_FD_SB_INACTIVE;
8428         }
8429 }
8430
8431 /**
8432  * i40e_close - Disables a network interface
8433  * @netdev: network interface device structure
8434  *
8435  * The close entry point is called when an interface is de-activated
8436  * by the OS.  The hardware is still under the driver's control, but
8437  * this netdev interface is disabled.
8438  *
8439  * Returns 0, this is not allowed to fail
8440  **/
8441 int i40e_close(struct net_device *netdev)
8442 {
8443         struct i40e_netdev_priv *np = netdev_priv(netdev);
8444         struct i40e_vsi *vsi = np->vsi;
8445
8446         i40e_vsi_close(vsi);
8447
8448         return 0;
8449 }
8450
8451 /**
8452  * i40e_do_reset - Start a PF or Core Reset sequence
8453  * @pf: board private structure
8454  * @reset_flags: which reset is requested
8455  * @lock_acquired: indicates whether or not the lock has been acquired
8456  * before this function was called.
8457  *
8458  * The essential difference in resets is that the PF Reset
8459  * doesn't clear the packet buffers, doesn't reset the PE
8460  * firmware, and doesn't bother the other PFs on the chip.
8461  **/
8462 void i40e_do_reset(struct i40e_pf *pf, u32 reset_flags, bool lock_acquired)
8463 {
8464         u32 val;
8465
8466         WARN_ON(in_interrupt());
8467
8468
8469         /* do the biggest reset indicated */
8470         if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) {
8471
8472                 /* Request a Global Reset
8473                  *
8474                  * This will start the chip's countdown to the actual full
8475                  * chip reset event, and a warning interrupt to be sent
8476                  * to all PFs, including the requestor.  Our handler
8477                  * for the warning interrupt will deal with the shutdown
8478                  * and recovery of the switch setup.
8479                  */
8480                 dev_dbg(&pf->pdev->dev, "GlobalR requested\n");
8481                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
8482                 val |= I40E_GLGEN_RTRIG_GLOBR_MASK;
8483                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
8484
8485         } else if (reset_flags & BIT_ULL(__I40E_CORE_RESET_REQUESTED)) {
8486
8487                 /* Request a Core Reset
8488                  *
8489                  * Same as Global Reset, except does *not* include the MAC/PHY
8490                  */
8491                 dev_dbg(&pf->pdev->dev, "CoreR requested\n");
8492                 val = rd32(&pf->hw, I40E_GLGEN_RTRIG);
8493                 val |= I40E_GLGEN_RTRIG_CORER_MASK;
8494                 wr32(&pf->hw, I40E_GLGEN_RTRIG, val);
8495                 i40e_flush(&pf->hw);
8496
8497         } else if (reset_flags & I40E_PF_RESET_FLAG) {
8498
8499                 /* Request a PF Reset
8500                  *
8501                  * Resets only the PF-specific registers
8502                  *
8503                  * This goes directly to the tear-down and rebuild of
8504                  * the switch, since we need to do all the recovery as
8505                  * for the Core Reset.
8506                  */
8507                 dev_dbg(&pf->pdev->dev, "PFR requested\n");
8508                 i40e_handle_reset_warning(pf, lock_acquired);
8509
8510                 dev_info(&pf->pdev->dev,
8511                          pf->flags & I40E_FLAG_DISABLE_FW_LLDP ?
8512                          "FW LLDP is disabled\n" :
8513                          "FW LLDP is enabled\n");
8514
8515         } else if (reset_flags & BIT_ULL(__I40E_REINIT_REQUESTED)) {
8516                 int v;
8517
8518                 /* Find the VSI(s) that requested a re-init */
8519                 dev_info(&pf->pdev->dev,
8520                          "VSI reinit requested\n");
8521                 for (v = 0; v < pf->num_alloc_vsi; v++) {
8522                         struct i40e_vsi *vsi = pf->vsi[v];
8523
8524                         if (vsi != NULL &&
8525                             test_and_clear_bit(__I40E_VSI_REINIT_REQUESTED,
8526                                                vsi->state))
8527                                 i40e_vsi_reinit_locked(pf->vsi[v]);
8528                 }
8529         } else if (reset_flags & BIT_ULL(__I40E_DOWN_REQUESTED)) {
8530                 int v;
8531
8532                 /* Find the VSI(s) that needs to be brought down */
8533                 dev_info(&pf->pdev->dev, "VSI down requested\n");
8534                 for (v = 0; v < pf->num_alloc_vsi; v++) {
8535                         struct i40e_vsi *vsi = pf->vsi[v];
8536
8537                         if (vsi != NULL &&
8538                             test_and_clear_bit(__I40E_VSI_DOWN_REQUESTED,
8539                                                vsi->state)) {
8540                                 set_bit(__I40E_VSI_DOWN, vsi->state);
8541                                 i40e_down(vsi);
8542                         }
8543                 }
8544         } else {
8545                 dev_info(&pf->pdev->dev,
8546                          "bad reset request 0x%08x\n", reset_flags);
8547         }
8548 }
8549
8550 #ifdef CONFIG_I40E_DCB
8551 /**
8552  * i40e_dcb_need_reconfig - Check if DCB needs reconfig
8553  * @pf: board private structure
8554  * @old_cfg: current DCB config
8555  * @new_cfg: new DCB config
8556  **/
8557 bool i40e_dcb_need_reconfig(struct i40e_pf *pf,
8558                             struct i40e_dcbx_config *old_cfg,
8559                             struct i40e_dcbx_config *new_cfg)
8560 {
8561         bool need_reconfig = false;
8562
8563         /* Check if ETS configuration has changed */
8564         if (memcmp(&new_cfg->etscfg,
8565                    &old_cfg->etscfg,
8566                    sizeof(new_cfg->etscfg))) {
8567                 /* If Priority Table has changed reconfig is needed */
8568                 if (memcmp(&new_cfg->etscfg.prioritytable,
8569                            &old_cfg->etscfg.prioritytable,
8570                            sizeof(new_cfg->etscfg.prioritytable))) {
8571                         need_reconfig = true;
8572                         dev_dbg(&pf->pdev->dev, "ETS UP2TC changed.\n");
8573                 }
8574
8575                 if (memcmp(&new_cfg->etscfg.tcbwtable,
8576                            &old_cfg->etscfg.tcbwtable,
8577                            sizeof(new_cfg->etscfg.tcbwtable)))
8578                         dev_dbg(&pf->pdev->dev, "ETS TC BW Table changed.\n");
8579
8580                 if (memcmp(&new_cfg->etscfg.tsatable,
8581                            &old_cfg->etscfg.tsatable,
8582                            sizeof(new_cfg->etscfg.tsatable)))
8583                         dev_dbg(&pf->pdev->dev, "ETS TSA Table changed.\n");
8584         }
8585
8586         /* Check if PFC configuration has changed */
8587         if (memcmp(&new_cfg->pfc,
8588                    &old_cfg->pfc,
8589                    sizeof(new_cfg->pfc))) {
8590                 need_reconfig = true;
8591                 dev_dbg(&pf->pdev->dev, "PFC config change detected.\n");
8592         }
8593
8594         /* Check if APP Table has changed */
8595         if (memcmp(&new_cfg->app,
8596                    &old_cfg->app,
8597                    sizeof(new_cfg->app))) {
8598                 need_reconfig = true;
8599                 dev_dbg(&pf->pdev->dev, "APP Table change detected.\n");
8600         }
8601
8602         dev_dbg(&pf->pdev->dev, "dcb need_reconfig=%d\n", need_reconfig);
8603         return need_reconfig;
8604 }
8605
8606 /**
8607  * i40e_handle_lldp_event - Handle LLDP Change MIB event
8608  * @pf: board private structure
8609  * @e: event info posted on ARQ
8610  **/
8611 static int i40e_handle_lldp_event(struct i40e_pf *pf,
8612                                   struct i40e_arq_event_info *e)
8613 {
8614         struct i40e_aqc_lldp_get_mib *mib =
8615                 (struct i40e_aqc_lldp_get_mib *)&e->desc.params.raw;
8616         struct i40e_hw *hw = &pf->hw;
8617         struct i40e_dcbx_config tmp_dcbx_cfg;
8618         bool need_reconfig = false;
8619         int ret = 0;
8620         u8 type;
8621
8622         /* Not DCB capable or capability disabled */
8623         if (!(pf->flags & I40E_FLAG_DCB_CAPABLE))
8624                 return ret;
8625
8626         /* Ignore if event is not for Nearest Bridge */
8627         type = ((mib->type >> I40E_AQ_LLDP_BRIDGE_TYPE_SHIFT)
8628                 & I40E_AQ_LLDP_BRIDGE_TYPE_MASK);
8629         dev_dbg(&pf->pdev->dev, "LLDP event mib bridge type 0x%x\n", type);
8630         if (type != I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE)
8631                 return ret;
8632
8633         /* Check MIB Type and return if event for Remote MIB update */
8634         type = mib->type & I40E_AQ_LLDP_MIB_TYPE_MASK;
8635         dev_dbg(&pf->pdev->dev,
8636                 "LLDP event mib type %s\n", type ? "remote" : "local");
8637         if (type == I40E_AQ_LLDP_MIB_REMOTE) {
8638                 /* Update the remote cached instance and return */
8639                 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
8640                                 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
8641                                 &hw->remote_dcbx_config);
8642                 goto exit;
8643         }
8644
8645         /* Store the old configuration */
8646         tmp_dcbx_cfg = hw->local_dcbx_config;
8647
8648         /* Reset the old DCBx configuration data */
8649         memset(&hw->local_dcbx_config, 0, sizeof(hw->local_dcbx_config));
8650         /* Get updated DCBX data from firmware */
8651         ret = i40e_get_dcb_config(&pf->hw);
8652         if (ret) {
8653                 dev_info(&pf->pdev->dev,
8654                          "Failed querying DCB configuration data from firmware, err %s aq_err %s\n",
8655                          i40e_stat_str(&pf->hw, ret),
8656                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
8657                 goto exit;
8658         }
8659
8660         /* No change detected in DCBX configs */
8661         if (!memcmp(&tmp_dcbx_cfg, &hw->local_dcbx_config,
8662                     sizeof(tmp_dcbx_cfg))) {
8663                 dev_dbg(&pf->pdev->dev, "No change detected in DCBX configuration.\n");
8664                 goto exit;
8665         }
8666
8667         need_reconfig = i40e_dcb_need_reconfig(pf, &tmp_dcbx_cfg,
8668                                                &hw->local_dcbx_config);
8669
8670         i40e_dcbnl_flush_apps(pf, &tmp_dcbx_cfg, &hw->local_dcbx_config);
8671
8672         if (!need_reconfig)
8673                 goto exit;
8674
8675         /* Enable DCB tagging only when more than one TC */
8676         if (i40e_dcb_get_num_tc(&hw->local_dcbx_config) > 1)
8677                 pf->flags |= I40E_FLAG_DCB_ENABLED;
8678         else
8679                 pf->flags &= ~I40E_FLAG_DCB_ENABLED;
8680
8681         set_bit(__I40E_PORT_SUSPENDED, pf->state);
8682         /* Reconfiguration needed quiesce all VSIs */
8683         i40e_pf_quiesce_all_vsi(pf);
8684
8685         /* Changes in configuration update VEB/VSI */
8686         i40e_dcb_reconfigure(pf);
8687
8688         ret = i40e_resume_port_tx(pf);
8689
8690         clear_bit(__I40E_PORT_SUSPENDED, pf->state);
8691         /* In case of error no point in resuming VSIs */
8692         if (ret)
8693                 goto exit;
8694
8695         /* Wait for the PF's queues to be disabled */
8696         ret = i40e_pf_wait_queues_disabled(pf);
8697         if (ret) {
8698                 /* Schedule PF reset to recover */
8699                 set_bit(__I40E_PF_RESET_REQUESTED, pf->state);
8700                 i40e_service_event_schedule(pf);
8701         } else {
8702                 i40e_pf_unquiesce_all_vsi(pf);
8703                 set_bit(__I40E_CLIENT_SERVICE_REQUESTED, pf->state);
8704                 set_bit(__I40E_CLIENT_L2_CHANGE, pf->state);
8705         }
8706
8707 exit:
8708         return ret;
8709 }
8710 #endif /* CONFIG_I40E_DCB */
8711
8712 /**
8713  * i40e_do_reset_safe - Protected reset path for userland calls.
8714  * @pf: board private structure
8715  * @reset_flags: which reset is requested
8716  *
8717  **/
8718 void i40e_do_reset_safe(struct i40e_pf *pf, u32 reset_flags)
8719 {
8720         rtnl_lock();
8721         i40e_do_reset(pf, reset_flags, true);
8722         rtnl_unlock();
8723 }
8724
8725 /**
8726  * i40e_handle_lan_overflow_event - Handler for LAN queue overflow event
8727  * @pf: board private structure
8728  * @e: event info posted on ARQ
8729  *
8730  * Handler for LAN Queue Overflow Event generated by the firmware for PF
8731  * and VF queues
8732  **/
8733 static void i40e_handle_lan_overflow_event(struct i40e_pf *pf,
8734                                            struct i40e_arq_event_info *e)
8735 {
8736         struct i40e_aqc_lan_overflow *data =
8737                 (struct i40e_aqc_lan_overflow *)&e->desc.params.raw;
8738         u32 queue = le32_to_cpu(data->prtdcb_rupto);
8739         u32 qtx_ctl = le32_to_cpu(data->otx_ctl);
8740         struct i40e_hw *hw = &pf->hw;
8741         struct i40e_vf *vf;
8742         u16 vf_id;
8743
8744         dev_dbg(&pf->pdev->dev, "overflow Rx Queue Number = %d QTX_CTL=0x%08x\n",
8745                 queue, qtx_ctl);
8746
8747         /* Queue belongs to VF, find the VF and issue VF reset */
8748         if (((qtx_ctl & I40E_QTX_CTL_PFVF_Q_MASK)
8749             >> I40E_QTX_CTL_PFVF_Q_SHIFT) == I40E_QTX_CTL_VF_QUEUE) {
8750                 vf_id = (u16)((qtx_ctl & I40E_QTX_CTL_VFVM_INDX_MASK)
8751                          >> I40E_QTX_CTL_VFVM_INDX_SHIFT);
8752                 vf_id -= hw->func_caps.vf_base_id;
8753                 vf = &pf->vf[vf_id];
8754                 i40e_vc_notify_vf_reset(vf);
8755                 /* Allow VF to process pending reset notification */
8756                 msleep(20);
8757                 i40e_reset_vf(vf, false);
8758         }
8759 }
8760
8761 /**
8762  * i40e_get_cur_guaranteed_fd_count - Get the consumed guaranteed FD filters
8763  * @pf: board private structure
8764  **/
8765 u32 i40e_get_cur_guaranteed_fd_count(struct i40e_pf *pf)
8766 {
8767         u32 val, fcnt_prog;
8768
8769         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
8770         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK);
8771         return fcnt_prog;
8772 }
8773
8774 /**
8775  * i40e_get_current_fd_count - Get total FD filters programmed for this PF
8776  * @pf: board private structure
8777  **/
8778 u32 i40e_get_current_fd_count(struct i40e_pf *pf)
8779 {
8780         u32 val, fcnt_prog;
8781
8782         val = rd32(&pf->hw, I40E_PFQF_FDSTAT);
8783         fcnt_prog = (val & I40E_PFQF_FDSTAT_GUARANT_CNT_MASK) +
8784                     ((val & I40E_PFQF_FDSTAT_BEST_CNT_MASK) >>
8785                       I40E_PFQF_FDSTAT_BEST_CNT_SHIFT);
8786         return fcnt_prog;
8787 }
8788
8789 /**
8790  * i40e_get_global_fd_count - Get total FD filters programmed on device
8791  * @pf: board private structure
8792  **/
8793 u32 i40e_get_global_fd_count(struct i40e_pf *pf)
8794 {
8795         u32 val, fcnt_prog;
8796
8797         val = rd32(&pf->hw, I40E_GLQF_FDCNT_0);
8798         fcnt_prog = (val & I40E_GLQF_FDCNT_0_GUARANT_CNT_MASK) +
8799                     ((val & I40E_GLQF_FDCNT_0_BESTCNT_MASK) >>
8800                      I40E_GLQF_FDCNT_0_BESTCNT_SHIFT);
8801         return fcnt_prog;
8802 }
8803
8804 /**
8805  * i40e_reenable_fdir_sb - Restore FDir SB capability
8806  * @pf: board private structure
8807  **/
8808 static void i40e_reenable_fdir_sb(struct i40e_pf *pf)
8809 {
8810         if (test_and_clear_bit(__I40E_FD_SB_AUTO_DISABLED, pf->state))
8811                 if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
8812                     (I40E_DEBUG_FD & pf->hw.debug_mask))
8813                         dev_info(&pf->pdev->dev, "FD Sideband/ntuple is being enabled since we have space in the table now\n");
8814 }
8815
8816 /**
8817  * i40e_reenable_fdir_atr - Restore FDir ATR capability
8818  * @pf: board private structure
8819  **/
8820 static void i40e_reenable_fdir_atr(struct i40e_pf *pf)
8821 {
8822         if (test_and_clear_bit(__I40E_FD_ATR_AUTO_DISABLED, pf->state)) {
8823                 /* ATR uses the same filtering logic as SB rules. It only
8824                  * functions properly if the input set mask is at the default
8825                  * settings. It is safe to restore the default input set
8826                  * because there are no active TCPv4 filter rules.
8827                  */
8828                 i40e_write_fd_input_set(pf, I40E_FILTER_PCTYPE_NONF_IPV4_TCP,
8829                                         I40E_L3_SRC_MASK | I40E_L3_DST_MASK |
8830                                         I40E_L4_SRC_MASK | I40E_L4_DST_MASK);
8831
8832                 if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
8833                     (I40E_DEBUG_FD & pf->hw.debug_mask))
8834                         dev_info(&pf->pdev->dev, "ATR is being enabled since we have space in the table and there are no conflicting ntuple rules\n");
8835         }
8836 }
8837
8838 /**
8839  * i40e_delete_invalid_filter - Delete an invalid FDIR filter
8840  * @pf: board private structure
8841  * @filter: FDir filter to remove
8842  */
8843 static void i40e_delete_invalid_filter(struct i40e_pf *pf,
8844                                        struct i40e_fdir_filter *filter)
8845 {
8846         /* Update counters */
8847         pf->fdir_pf_active_filters--;
8848         pf->fd_inv = 0;
8849
8850         switch (filter->flow_type) {
8851         case TCP_V4_FLOW:
8852                 pf->fd_tcp4_filter_cnt--;
8853                 break;
8854         case UDP_V4_FLOW:
8855                 pf->fd_udp4_filter_cnt--;
8856                 break;
8857         case SCTP_V4_FLOW:
8858                 pf->fd_sctp4_filter_cnt--;
8859                 break;
8860         case IP_USER_FLOW:
8861                 switch (filter->ip4_proto) {
8862                 case IPPROTO_TCP:
8863                         pf->fd_tcp4_filter_cnt--;
8864                         break;
8865                 case IPPROTO_UDP:
8866                         pf->fd_udp4_filter_cnt--;
8867                         break;
8868                 case IPPROTO_SCTP:
8869                         pf->fd_sctp4_filter_cnt--;
8870                         break;
8871                 case IPPROTO_IP:
8872                         pf->fd_ip4_filter_cnt--;
8873                         break;
8874                 }
8875                 break;
8876         }
8877
8878         /* Remove the filter from the list and free memory */
8879         hlist_del(&filter->fdir_node);
8880         kfree(filter);
8881 }
8882
8883 /**
8884  * i40e_fdir_check_and_reenable - Function to reenabe FD ATR or SB if disabled
8885  * @pf: board private structure
8886  **/
8887 void i40e_fdir_check_and_reenable(struct i40e_pf *pf)
8888 {
8889         struct i40e_fdir_filter *filter;
8890         u32 fcnt_prog, fcnt_avail;
8891         struct hlist_node *node;
8892
8893         if (test_bit(__I40E_FD_FLUSH_REQUESTED, pf->state))
8894                 return;
8895
8896         /* Check if we have enough room to re-enable FDir SB capability. */
8897         fcnt_prog = i40e_get_global_fd_count(pf);
8898         fcnt_avail = pf->fdir_pf_filter_count;
8899         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM)) ||
8900             (pf->fd_add_err == 0) ||
8901             (i40e_get_current_atr_cnt(pf) < pf->fd_atr_cnt))
8902                 i40e_reenable_fdir_sb(pf);
8903
8904         /* We should wait for even more space before re-enabling ATR.
8905          * Additionally, we cannot enable ATR as long as we still have TCP SB
8906          * rules active.
8907          */
8908         if ((fcnt_prog < (fcnt_avail - I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) &&
8909             (pf->fd_tcp4_filter_cnt == 0))
8910                 i40e_reenable_fdir_atr(pf);
8911
8912         /* if hw had a problem adding a filter, delete it */
8913         if (pf->fd_inv > 0) {
8914                 hlist_for_each_entry_safe(filter, node,
8915                                           &pf->fdir_filter_list, fdir_node)
8916                         if (filter->fd_id == pf->fd_inv)
8917                                 i40e_delete_invalid_filter(pf, filter);
8918         }
8919 }
8920
8921 #define I40E_MIN_FD_FLUSH_INTERVAL 10
8922 #define I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE 30
8923 /**
8924  * i40e_fdir_flush_and_replay - Function to flush all FD filters and replay SB
8925  * @pf: board private structure
8926  **/
8927 static void i40e_fdir_flush_and_replay(struct i40e_pf *pf)
8928 {
8929         unsigned long min_flush_time;
8930         int flush_wait_retry = 50;
8931         bool disable_atr = false;
8932         int fd_room;
8933         int reg;
8934
8935         if (!time_after(jiffies, pf->fd_flush_timestamp +
8936                                  (I40E_MIN_FD_FLUSH_INTERVAL * HZ)))
8937                 return;
8938
8939         /* If the flush is happening too quick and we have mostly SB rules we
8940          * should not re-enable ATR for some time.
8941          */
8942         min_flush_time = pf->fd_flush_timestamp +
8943                          (I40E_MIN_FD_FLUSH_SB_ATR_UNSTABLE * HZ);
8944         fd_room = pf->fdir_pf_filter_count - pf->fdir_pf_active_filters;
8945
8946         if (!(time_after(jiffies, min_flush_time)) &&
8947             (fd_room < I40E_FDIR_BUFFER_HEAD_ROOM_FOR_ATR)) {
8948                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
8949                         dev_info(&pf->pdev->dev, "ATR disabled, not enough FD filter space.\n");
8950                 disable_atr = true;
8951         }
8952
8953         pf->fd_flush_timestamp = jiffies;
8954         set_bit(__I40E_FD_ATR_AUTO_DISABLED, pf->state);
8955         /* flush all filters */
8956         wr32(&pf->hw, I40E_PFQF_CTL_1,
8957              I40E_PFQF_CTL_1_CLEARFDTABLE_MASK);
8958         i40e_flush(&pf->hw);
8959         pf->fd_flush_cnt++;
8960         pf->fd_add_err = 0;
8961         do {
8962                 /* Check FD flush status every 5-6msec */
8963                 usleep_range(5000, 6000);
8964                 reg = rd32(&pf->hw, I40E_PFQF_CTL_1);
8965                 if (!(reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK))
8966                         break;
8967         } while (flush_wait_retry--);
8968         if (reg & I40E_PFQF_CTL_1_CLEARFDTABLE_MASK) {
8969                 dev_warn(&pf->pdev->dev, "FD table did not flush, needs more time\n");
8970         } else {
8971                 /* replay sideband filters */
8972                 i40e_fdir_filter_restore(pf->vsi[pf->lan_vsi]);
8973                 if (!disable_atr && !pf->fd_tcp4_filter_cnt)
8974                         clear_bit(__I40E_FD_ATR_AUTO_DISABLED, pf->state);
8975                 clear_bit(__I40E_FD_FLUSH_REQUESTED, pf->state);
8976                 if (I40E_DEBUG_FD & pf->hw.debug_mask)
8977                         dev_info(&pf->pdev->dev, "FD Filter table flushed and FD-SB replayed.\n");
8978         }
8979 }
8980
8981 /**
8982  * i40e_get_current_atr_count - Get the count of total FD ATR filters programmed
8983  * @pf: board private structure
8984  **/
8985 u32 i40e_get_current_atr_cnt(struct i40e_pf *pf)
8986 {
8987         return i40e_get_current_fd_count(pf) - pf->fdir_pf_active_filters;
8988 }
8989
8990 /**
8991  * i40e_fdir_reinit_subtask - Worker thread to reinit FDIR filter table
8992  * @pf: board private structure
8993  **/
8994 static void i40e_fdir_reinit_subtask(struct i40e_pf *pf)
8995 {
8996
8997         /* if interface is down do nothing */
8998         if (test_bit(__I40E_DOWN, pf->state))
8999                 return;
9000
9001         if (test_bit(__I40E_FD_FLUSH_REQUESTED, pf->state))
9002                 i40e_fdir_flush_and_replay(pf);
9003
9004         i40e_fdir_check_and_reenable(pf);
9005
9006 }
9007
9008 /**
9009  * i40e_vsi_link_event - notify VSI of a link event
9010  * @vsi: vsi to be notified
9011  * @link_up: link up or down
9012  **/
9013 static void i40e_vsi_link_event(struct i40e_vsi *vsi, bool link_up)
9014 {
9015         if (!vsi || test_bit(__I40E_VSI_DOWN, vsi->state))
9016                 return;
9017
9018         switch (vsi->type) {
9019         case I40E_VSI_MAIN:
9020                 if (!vsi->netdev || !vsi->netdev_registered)
9021                         break;
9022
9023                 if (link_up) {
9024                         netif_carrier_on(vsi->netdev);
9025                         netif_tx_wake_all_queues(vsi->netdev);
9026                 } else {
9027                         netif_carrier_off(vsi->netdev);
9028                         netif_tx_stop_all_queues(vsi->netdev);
9029                 }
9030                 break;
9031
9032         case I40E_VSI_SRIOV:
9033         case I40E_VSI_VMDQ2:
9034         case I40E_VSI_CTRL:
9035         case I40E_VSI_IWARP:
9036         case I40E_VSI_MIRROR:
9037         default:
9038                 /* there is no notification for other VSIs */
9039                 break;
9040         }
9041 }
9042
9043 /**
9044  * i40e_veb_link_event - notify elements on the veb of a link event
9045  * @veb: veb to be notified
9046  * @link_up: link up or down
9047  **/
9048 static void i40e_veb_link_event(struct i40e_veb *veb, bool link_up)
9049 {
9050         struct i40e_pf *pf;
9051         int i;
9052
9053         if (!veb || !veb->pf)
9054                 return;
9055         pf = veb->pf;
9056
9057         /* depth first... */
9058         for (i = 0; i < I40E_MAX_VEB; i++)
9059                 if (pf->veb[i] && (pf->veb[i]->uplink_seid == veb->seid))
9060                         i40e_veb_link_event(pf->veb[i], link_up);
9061
9062         /* ... now the local VSIs */
9063         for (i = 0; i < pf->num_alloc_vsi; i++)
9064                 if (pf->vsi[i] && (pf->vsi[i]->uplink_seid == veb->seid))
9065                         i40e_vsi_link_event(pf->vsi[i], link_up);
9066 }
9067
9068 /**
9069  * i40e_link_event - Update netif_carrier status
9070  * @pf: board private structure
9071  **/
9072 static void i40e_link_event(struct i40e_pf *pf)
9073 {
9074         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
9075         u8 new_link_speed, old_link_speed;
9076         i40e_status status;
9077         bool new_link, old_link;
9078
9079         /* set this to force the get_link_status call to refresh state */
9080         pf->hw.phy.get_link_info = true;
9081         old_link = (pf->hw.phy.link_info_old.link_info & I40E_AQ_LINK_UP);
9082         status = i40e_get_link_status(&pf->hw, &new_link);
9083
9084         /* On success, disable temp link polling */
9085         if (status == I40E_SUCCESS) {
9086                 clear_bit(__I40E_TEMP_LINK_POLLING, pf->state);
9087         } else {
9088                 /* Enable link polling temporarily until i40e_get_link_status
9089                  * returns I40E_SUCCESS
9090                  */
9091                 set_bit(__I40E_TEMP_LINK_POLLING, pf->state);
9092                 dev_dbg(&pf->pdev->dev, "couldn't get link state, status: %d\n",
9093                         status);
9094                 return;
9095         }
9096
9097         old_link_speed = pf->hw.phy.link_info_old.link_speed;
9098         new_link_speed = pf->hw.phy.link_info.link_speed;
9099
9100         if (new_link == old_link &&
9101             new_link_speed == old_link_speed &&
9102             (test_bit(__I40E_VSI_DOWN, vsi->state) ||
9103              new_link == netif_carrier_ok(vsi->netdev)))
9104                 return;
9105
9106         i40e_print_link_message(vsi, new_link);
9107
9108         /* Notify the base of the switch tree connected to
9109          * the link.  Floating VEBs are not notified.
9110          */
9111         if (pf->lan_veb < I40E_MAX_VEB && pf->veb[pf->lan_veb])
9112                 i40e_veb_link_event(pf->veb[pf->lan_veb], new_link);
9113         else
9114                 i40e_vsi_link_event(vsi, new_link);
9115
9116         if (pf->vf)
9117                 i40e_vc_notify_link_state(pf);
9118
9119         if (pf->flags & I40E_FLAG_PTP)
9120                 i40e_ptp_set_increment(pf);
9121 }
9122
9123 /**
9124  * i40e_watchdog_subtask - periodic checks not using event driven response
9125  * @pf: board private structure
9126  **/
9127 static void i40e_watchdog_subtask(struct i40e_pf *pf)
9128 {
9129         int i;
9130
9131         /* if interface is down do nothing */
9132         if (test_bit(__I40E_DOWN, pf->state) ||
9133             test_bit(__I40E_CONFIG_BUSY, pf->state))
9134                 return;
9135
9136         /* make sure we don't do these things too often */
9137         if (time_before(jiffies, (pf->service_timer_previous +
9138                                   pf->service_timer_period)))
9139                 return;
9140         pf->service_timer_previous = jiffies;
9141
9142         if ((pf->flags & I40E_FLAG_LINK_POLLING_ENABLED) ||
9143             test_bit(__I40E_TEMP_LINK_POLLING, pf->state))
9144                 i40e_link_event(pf);
9145
9146         /* Update the stats for active netdevs so the network stack
9147          * can look at updated numbers whenever it cares to
9148          */
9149         for (i = 0; i < pf->num_alloc_vsi; i++)
9150                 if (pf->vsi[i] && pf->vsi[i]->netdev)
9151                         i40e_update_stats(pf->vsi[i]);
9152
9153         if (pf->flags & I40E_FLAG_VEB_STATS_ENABLED) {
9154                 /* Update the stats for the active switching components */
9155                 for (i = 0; i < I40E_MAX_VEB; i++)
9156                         if (pf->veb[i])
9157                                 i40e_update_veb_stats(pf->veb[i]);
9158         }
9159
9160         i40e_ptp_rx_hang(pf);
9161         i40e_ptp_tx_hang(pf);
9162 }
9163
9164 /**
9165  * i40e_reset_subtask - Set up for resetting the device and driver
9166  * @pf: board private structure
9167  **/
9168 static void i40e_reset_subtask(struct i40e_pf *pf)
9169 {
9170         u32 reset_flags = 0;
9171
9172         if (test_bit(__I40E_REINIT_REQUESTED, pf->state)) {
9173                 reset_flags |= BIT(__I40E_REINIT_REQUESTED);
9174                 clear_bit(__I40E_REINIT_REQUESTED, pf->state);
9175         }
9176         if (test_bit(__I40E_PF_RESET_REQUESTED, pf->state)) {
9177                 reset_flags |= BIT(__I40E_PF_RESET_REQUESTED);
9178                 clear_bit(__I40E_PF_RESET_REQUESTED, pf->state);
9179         }
9180         if (test_bit(__I40E_CORE_RESET_REQUESTED, pf->state)) {
9181                 reset_flags |= BIT(__I40E_CORE_RESET_REQUESTED);
9182                 clear_bit(__I40E_CORE_RESET_REQUESTED, pf->state);
9183         }
9184         if (test_bit(__I40E_GLOBAL_RESET_REQUESTED, pf->state)) {
9185                 reset_flags |= BIT(__I40E_GLOBAL_RESET_REQUESTED);
9186                 clear_bit(__I40E_GLOBAL_RESET_REQUESTED, pf->state);
9187         }
9188         if (test_bit(__I40E_DOWN_REQUESTED, pf->state)) {
9189                 reset_flags |= BIT(__I40E_DOWN_REQUESTED);
9190                 clear_bit(__I40E_DOWN_REQUESTED, pf->state);
9191         }
9192
9193         /* If there's a recovery already waiting, it takes
9194          * precedence before starting a new reset sequence.
9195          */
9196         if (test_bit(__I40E_RESET_INTR_RECEIVED, pf->state)) {
9197                 i40e_prep_for_reset(pf, false);
9198                 i40e_reset(pf);
9199                 i40e_rebuild(pf, false, false);
9200         }
9201
9202         /* If we're already down or resetting, just bail */
9203         if (reset_flags &&
9204             !test_bit(__I40E_DOWN, pf->state) &&
9205             !test_bit(__I40E_CONFIG_BUSY, pf->state)) {
9206                 i40e_do_reset(pf, reset_flags, false);
9207         }
9208 }
9209
9210 /**
9211  * i40e_handle_link_event - Handle link event
9212  * @pf: board private structure
9213  * @e: event info posted on ARQ
9214  **/
9215 static void i40e_handle_link_event(struct i40e_pf *pf,
9216                                    struct i40e_arq_event_info *e)
9217 {
9218         struct i40e_aqc_get_link_status *status =
9219                 (struct i40e_aqc_get_link_status *)&e->desc.params.raw;
9220
9221         /* Do a new status request to re-enable LSE reporting
9222          * and load new status information into the hw struct
9223          * This completely ignores any state information
9224          * in the ARQ event info, instead choosing to always
9225          * issue the AQ update link status command.
9226          */
9227         i40e_link_event(pf);
9228
9229         /* Check if module meets thermal requirements */
9230         if (status->phy_type == I40E_PHY_TYPE_NOT_SUPPORTED_HIGH_TEMP) {
9231                 dev_err(&pf->pdev->dev,
9232                         "Rx/Tx is disabled on this device because the module does not meet thermal requirements.\n");
9233                 dev_err(&pf->pdev->dev,
9234                         "Refer to the Intel(R) Ethernet Adapters and Devices User Guide for a list of supported modules.\n");
9235         } else {
9236                 /* check for unqualified module, if link is down, suppress
9237                  * the message if link was forced to be down.
9238                  */
9239                 if ((status->link_info & I40E_AQ_MEDIA_AVAILABLE) &&
9240                     (!(status->an_info & I40E_AQ_QUALIFIED_MODULE)) &&
9241                     (!(status->link_info & I40E_AQ_LINK_UP)) &&
9242                     (!(pf->flags & I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED))) {
9243                         dev_err(&pf->pdev->dev,
9244                                 "Rx/Tx is disabled on this device because an unsupported SFP module type was detected.\n");
9245                         dev_err(&pf->pdev->dev,
9246                                 "Refer to the Intel(R) Ethernet Adapters and Devices User Guide for a list of supported modules.\n");
9247                 }
9248         }
9249 }
9250
9251 /**
9252  * i40e_clean_adminq_subtask - Clean the AdminQ rings
9253  * @pf: board private structure
9254  **/
9255 static void i40e_clean_adminq_subtask(struct i40e_pf *pf)
9256 {
9257         struct i40e_arq_event_info event;
9258         struct i40e_hw *hw = &pf->hw;
9259         u16 pending, i = 0;
9260         i40e_status ret;
9261         u16 opcode;
9262         u32 oldval;
9263         u32 val;
9264
9265         /* Do not run clean AQ when PF reset fails */
9266         if (test_bit(__I40E_RESET_FAILED, pf->state))
9267                 return;
9268
9269         /* check for error indications */
9270         val = rd32(&pf->hw, pf->hw.aq.arq.len);
9271         oldval = val;
9272         if (val & I40E_PF_ARQLEN_ARQVFE_MASK) {
9273                 if (hw->debug_mask & I40E_DEBUG_AQ)
9274                         dev_info(&pf->pdev->dev, "ARQ VF Error detected\n");
9275                 val &= ~I40E_PF_ARQLEN_ARQVFE_MASK;
9276         }
9277         if (val & I40E_PF_ARQLEN_ARQOVFL_MASK) {
9278                 if (hw->debug_mask & I40E_DEBUG_AQ)
9279                         dev_info(&pf->pdev->dev, "ARQ Overflow Error detected\n");
9280                 val &= ~I40E_PF_ARQLEN_ARQOVFL_MASK;
9281                 pf->arq_overflows++;
9282         }
9283         if (val & I40E_PF_ARQLEN_ARQCRIT_MASK) {
9284                 if (hw->debug_mask & I40E_DEBUG_AQ)
9285                         dev_info(&pf->pdev->dev, "ARQ Critical Error detected\n");
9286                 val &= ~I40E_PF_ARQLEN_ARQCRIT_MASK;
9287         }
9288         if (oldval != val)
9289                 wr32(&pf->hw, pf->hw.aq.arq.len, val);
9290
9291         val = rd32(&pf->hw, pf->hw.aq.asq.len);
9292         oldval = val;
9293         if (val & I40E_PF_ATQLEN_ATQVFE_MASK) {
9294                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
9295                         dev_info(&pf->pdev->dev, "ASQ VF Error detected\n");
9296                 val &= ~I40E_PF_ATQLEN_ATQVFE_MASK;
9297         }
9298         if (val & I40E_PF_ATQLEN_ATQOVFL_MASK) {
9299                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
9300                         dev_info(&pf->pdev->dev, "ASQ Overflow Error detected\n");
9301                 val &= ~I40E_PF_ATQLEN_ATQOVFL_MASK;
9302         }
9303         if (val & I40E_PF_ATQLEN_ATQCRIT_MASK) {
9304                 if (pf->hw.debug_mask & I40E_DEBUG_AQ)
9305                         dev_info(&pf->pdev->dev, "ASQ Critical Error detected\n");
9306                 val &= ~I40E_PF_ATQLEN_ATQCRIT_MASK;
9307         }
9308         if (oldval != val)
9309                 wr32(&pf->hw, pf->hw.aq.asq.len, val);
9310
9311         event.buf_len = I40E_MAX_AQ_BUF_SIZE;
9312         event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL);
9313         if (!event.msg_buf)
9314                 return;
9315
9316         do {
9317                 ret = i40e_clean_arq_element(hw, &event, &pending);
9318                 if (ret == I40E_ERR_ADMIN_QUEUE_NO_WORK)
9319                         break;
9320                 else if (ret) {
9321                         dev_info(&pf->pdev->dev, "ARQ event error %d\n", ret);
9322                         break;
9323                 }
9324
9325                 opcode = le16_to_cpu(event.desc.opcode);
9326                 switch (opcode) {
9327
9328                 case i40e_aqc_opc_get_link_status:
9329                         i40e_handle_link_event(pf, &event);
9330                         break;
9331                 case i40e_aqc_opc_send_msg_to_pf:
9332                         ret = i40e_vc_process_vf_msg(pf,
9333                                         le16_to_cpu(event.desc.retval),
9334                                         le32_to_cpu(event.desc.cookie_high),
9335                                         le32_to_cpu(event.desc.cookie_low),
9336                                         event.msg_buf,
9337                                         event.msg_len);
9338                         break;
9339                 case i40e_aqc_opc_lldp_update_mib:
9340                         dev_dbg(&pf->pdev->dev, "ARQ: Update LLDP MIB event received\n");
9341 #ifdef CONFIG_I40E_DCB
9342                         rtnl_lock();
9343                         ret = i40e_handle_lldp_event(pf, &event);
9344                         rtnl_unlock();
9345 #endif /* CONFIG_I40E_DCB */
9346                         break;
9347                 case i40e_aqc_opc_event_lan_overflow:
9348                         dev_dbg(&pf->pdev->dev, "ARQ LAN queue overflow event received\n");
9349                         i40e_handle_lan_overflow_event(pf, &event);
9350                         break;
9351                 case i40e_aqc_opc_send_msg_to_peer:
9352                         dev_info(&pf->pdev->dev, "ARQ: Msg from other pf\n");
9353                         break;
9354                 case i40e_aqc_opc_nvm_erase:
9355                 case i40e_aqc_opc_nvm_update:
9356                 case i40e_aqc_opc_oem_post_update:
9357                         i40e_debug(&pf->hw, I40E_DEBUG_NVM,
9358                                    "ARQ NVM operation 0x%04x completed\n",
9359                                    opcode);
9360                         break;
9361                 default:
9362                         dev_info(&pf->pdev->dev,
9363                                  "ARQ: Unknown event 0x%04x ignored\n",
9364                                  opcode);
9365                         break;
9366                 }
9367         } while (i++ < pf->adminq_work_limit);
9368
9369         if (i < pf->adminq_work_limit)
9370                 clear_bit(__I40E_ADMINQ_EVENT_PENDING, pf->state);
9371
9372         /* re-enable Admin queue interrupt cause */
9373         val = rd32(hw, I40E_PFINT_ICR0_ENA);
9374         val |=  I40E_PFINT_ICR0_ENA_ADMINQ_MASK;
9375         wr32(hw, I40E_PFINT_ICR0_ENA, val);
9376         i40e_flush(hw);
9377
9378         kfree(event.msg_buf);
9379 }
9380
9381 /**
9382  * i40e_verify_eeprom - make sure eeprom is good to use
9383  * @pf: board private structure
9384  **/
9385 static void i40e_verify_eeprom(struct i40e_pf *pf)
9386 {
9387         int err;
9388
9389         err = i40e_diag_eeprom_test(&pf->hw);
9390         if (err) {
9391                 /* retry in case of garbage read */
9392                 err = i40e_diag_eeprom_test(&pf->hw);
9393                 if (err) {
9394                         dev_info(&pf->pdev->dev, "eeprom check failed (%d), Tx/Rx traffic disabled\n",
9395                                  err);
9396                         set_bit(__I40E_BAD_EEPROM, pf->state);
9397                 }
9398         }
9399
9400         if (!err && test_bit(__I40E_BAD_EEPROM, pf->state)) {
9401                 dev_info(&pf->pdev->dev, "eeprom check passed, Tx/Rx traffic enabled\n");
9402                 clear_bit(__I40E_BAD_EEPROM, pf->state);
9403         }
9404 }
9405
9406 /**
9407  * i40e_enable_pf_switch_lb
9408  * @pf: pointer to the PF structure
9409  *
9410  * enable switch loop back or die - no point in a return value
9411  **/
9412 static void i40e_enable_pf_switch_lb(struct i40e_pf *pf)
9413 {
9414         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
9415         struct i40e_vsi_context ctxt;
9416         int ret;
9417
9418         ctxt.seid = pf->main_vsi_seid;
9419         ctxt.pf_num = pf->hw.pf_id;
9420         ctxt.vf_num = 0;
9421         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
9422         if (ret) {
9423                 dev_info(&pf->pdev->dev,
9424                          "couldn't get PF vsi config, err %s aq_err %s\n",
9425                          i40e_stat_str(&pf->hw, ret),
9426                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9427                 return;
9428         }
9429         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9430         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9431         ctxt.info.switch_id |= cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9432
9433         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
9434         if (ret) {
9435                 dev_info(&pf->pdev->dev,
9436                          "update vsi switch failed, err %s aq_err %s\n",
9437                          i40e_stat_str(&pf->hw, ret),
9438                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9439         }
9440 }
9441
9442 /**
9443  * i40e_disable_pf_switch_lb
9444  * @pf: pointer to the PF structure
9445  *
9446  * disable switch loop back or die - no point in a return value
9447  **/
9448 static void i40e_disable_pf_switch_lb(struct i40e_pf *pf)
9449 {
9450         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
9451         struct i40e_vsi_context ctxt;
9452         int ret;
9453
9454         ctxt.seid = pf->main_vsi_seid;
9455         ctxt.pf_num = pf->hw.pf_id;
9456         ctxt.vf_num = 0;
9457         ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
9458         if (ret) {
9459                 dev_info(&pf->pdev->dev,
9460                          "couldn't get PF vsi config, err %s aq_err %s\n",
9461                          i40e_stat_str(&pf->hw, ret),
9462                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9463                 return;
9464         }
9465         ctxt.flags = I40E_AQ_VSI_TYPE_PF;
9466         ctxt.info.valid_sections = cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
9467         ctxt.info.switch_id &= ~cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
9468
9469         ret = i40e_aq_update_vsi_params(&vsi->back->hw, &ctxt, NULL);
9470         if (ret) {
9471                 dev_info(&pf->pdev->dev,
9472                          "update vsi switch failed, err %s aq_err %s\n",
9473                          i40e_stat_str(&pf->hw, ret),
9474                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9475         }
9476 }
9477
9478 /**
9479  * i40e_config_bridge_mode - Configure the HW bridge mode
9480  * @veb: pointer to the bridge instance
9481  *
9482  * Configure the loop back mode for the LAN VSI that is downlink to the
9483  * specified HW bridge instance. It is expected this function is called
9484  * when a new HW bridge is instantiated.
9485  **/
9486 static void i40e_config_bridge_mode(struct i40e_veb *veb)
9487 {
9488         struct i40e_pf *pf = veb->pf;
9489
9490         if (pf->hw.debug_mask & I40E_DEBUG_LAN)
9491                 dev_info(&pf->pdev->dev, "enabling bridge mode: %s\n",
9492                          veb->bridge_mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB");
9493         if (veb->bridge_mode & BRIDGE_MODE_VEPA)
9494                 i40e_disable_pf_switch_lb(pf);
9495         else
9496                 i40e_enable_pf_switch_lb(pf);
9497 }
9498
9499 /**
9500  * i40e_reconstitute_veb - rebuild the VEB and anything connected to it
9501  * @veb: pointer to the VEB instance
9502  *
9503  * This is a recursive function that first builds the attached VSIs then
9504  * recurses in to build the next layer of VEB.  We track the connections
9505  * through our own index numbers because the seid's from the HW could
9506  * change across the reset.
9507  **/
9508 static int i40e_reconstitute_veb(struct i40e_veb *veb)
9509 {
9510         struct i40e_vsi *ctl_vsi = NULL;
9511         struct i40e_pf *pf = veb->pf;
9512         int v, veb_idx;
9513         int ret;
9514
9515         /* build VSI that owns this VEB, temporarily attached to base VEB */
9516         for (v = 0; v < pf->num_alloc_vsi && !ctl_vsi; v++) {
9517                 if (pf->vsi[v] &&
9518                     pf->vsi[v]->veb_idx == veb->idx &&
9519                     pf->vsi[v]->flags & I40E_VSI_FLAG_VEB_OWNER) {
9520                         ctl_vsi = pf->vsi[v];
9521                         break;
9522                 }
9523         }
9524         if (!ctl_vsi) {
9525                 dev_info(&pf->pdev->dev,
9526                          "missing owner VSI for veb_idx %d\n", veb->idx);
9527                 ret = -ENOENT;
9528                 goto end_reconstitute;
9529         }
9530         if (ctl_vsi != pf->vsi[pf->lan_vsi])
9531                 ctl_vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
9532         ret = i40e_add_vsi(ctl_vsi);
9533         if (ret) {
9534                 dev_info(&pf->pdev->dev,
9535                          "rebuild of veb_idx %d owner VSI failed: %d\n",
9536                          veb->idx, ret);
9537                 goto end_reconstitute;
9538         }
9539         i40e_vsi_reset_stats(ctl_vsi);
9540
9541         /* create the VEB in the switch and move the VSI onto the VEB */
9542         ret = i40e_add_veb(veb, ctl_vsi);
9543         if (ret)
9544                 goto end_reconstitute;
9545
9546         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
9547                 veb->bridge_mode = BRIDGE_MODE_VEB;
9548         else
9549                 veb->bridge_mode = BRIDGE_MODE_VEPA;
9550         i40e_config_bridge_mode(veb);
9551
9552         /* create the remaining VSIs attached to this VEB */
9553         for (v = 0; v < pf->num_alloc_vsi; v++) {
9554                 if (!pf->vsi[v] || pf->vsi[v] == ctl_vsi)
9555                         continue;
9556
9557                 if (pf->vsi[v]->veb_idx == veb->idx) {
9558                         struct i40e_vsi *vsi = pf->vsi[v];
9559
9560                         vsi->uplink_seid = veb->seid;
9561                         ret = i40e_add_vsi(vsi);
9562                         if (ret) {
9563                                 dev_info(&pf->pdev->dev,
9564                                          "rebuild of vsi_idx %d failed: %d\n",
9565                                          v, ret);
9566                                 goto end_reconstitute;
9567                         }
9568                         i40e_vsi_reset_stats(vsi);
9569                 }
9570         }
9571
9572         /* create any VEBs attached to this VEB - RECURSION */
9573         for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
9574                 if (pf->veb[veb_idx] && pf->veb[veb_idx]->veb_idx == veb->idx) {
9575                         pf->veb[veb_idx]->uplink_seid = veb->seid;
9576                         ret = i40e_reconstitute_veb(pf->veb[veb_idx]);
9577                         if (ret)
9578                                 break;
9579                 }
9580         }
9581
9582 end_reconstitute:
9583         return ret;
9584 }
9585
9586 /**
9587  * i40e_get_capabilities - get info about the HW
9588  * @pf: the PF struct
9589  **/
9590 static int i40e_get_capabilities(struct i40e_pf *pf,
9591                                  enum i40e_admin_queue_opc list_type)
9592 {
9593         struct i40e_aqc_list_capabilities_element_resp *cap_buf;
9594         u16 data_size;
9595         int buf_len;
9596         int err;
9597
9598         buf_len = 40 * sizeof(struct i40e_aqc_list_capabilities_element_resp);
9599         do {
9600                 cap_buf = kzalloc(buf_len, GFP_KERNEL);
9601                 if (!cap_buf)
9602                         return -ENOMEM;
9603
9604                 /* this loads the data into the hw struct for us */
9605                 err = i40e_aq_discover_capabilities(&pf->hw, cap_buf, buf_len,
9606                                                     &data_size, list_type,
9607                                                     NULL);
9608                 /* data loaded, buffer no longer needed */
9609                 kfree(cap_buf);
9610
9611                 if (pf->hw.aq.asq_last_status == I40E_AQ_RC_ENOMEM) {
9612                         /* retry with a larger buffer */
9613                         buf_len = data_size;
9614                 } else if (pf->hw.aq.asq_last_status != I40E_AQ_RC_OK) {
9615                         dev_info(&pf->pdev->dev,
9616                                  "capability discovery failed, err %s aq_err %s\n",
9617                                  i40e_stat_str(&pf->hw, err),
9618                                  i40e_aq_str(&pf->hw,
9619                                              pf->hw.aq.asq_last_status));
9620                         return -ENODEV;
9621                 }
9622         } while (err);
9623
9624         if (pf->hw.debug_mask & I40E_DEBUG_USER) {
9625                 if (list_type == i40e_aqc_opc_list_func_capabilities) {
9626                         dev_info(&pf->pdev->dev,
9627                                  "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",
9628                                  pf->hw.pf_id, pf->hw.func_caps.num_vfs,
9629                                  pf->hw.func_caps.num_msix_vectors,
9630                                  pf->hw.func_caps.num_msix_vectors_vf,
9631                                  pf->hw.func_caps.fd_filters_guaranteed,
9632                                  pf->hw.func_caps.fd_filters_best_effort,
9633                                  pf->hw.func_caps.num_tx_qp,
9634                                  pf->hw.func_caps.num_vsis);
9635                 } else if (list_type == i40e_aqc_opc_list_dev_capabilities) {
9636                         dev_info(&pf->pdev->dev,
9637                                  "switch_mode=0x%04x, function_valid=0x%08x\n",
9638                                  pf->hw.dev_caps.switch_mode,
9639                                  pf->hw.dev_caps.valid_functions);
9640                         dev_info(&pf->pdev->dev,
9641                                  "SR-IOV=%d, num_vfs for all function=%u\n",
9642                                  pf->hw.dev_caps.sr_iov_1_1,
9643                                  pf->hw.dev_caps.num_vfs);
9644                         dev_info(&pf->pdev->dev,
9645                                  "num_vsis=%u, num_rx:%u, num_tx=%u\n",
9646                                  pf->hw.dev_caps.num_vsis,
9647                                  pf->hw.dev_caps.num_rx_qp,
9648                                  pf->hw.dev_caps.num_tx_qp);
9649                 }
9650         }
9651         if (list_type == i40e_aqc_opc_list_func_capabilities) {
9652 #define DEF_NUM_VSI (1 + (pf->hw.func_caps.fcoe ? 1 : 0) \
9653                        + pf->hw.func_caps.num_vfs)
9654                 if (pf->hw.revision_id == 0 &&
9655                     pf->hw.func_caps.num_vsis < DEF_NUM_VSI) {
9656                         dev_info(&pf->pdev->dev,
9657                                  "got num_vsis %d, setting num_vsis to %d\n",
9658                                  pf->hw.func_caps.num_vsis, DEF_NUM_VSI);
9659                         pf->hw.func_caps.num_vsis = DEF_NUM_VSI;
9660                 }
9661         }
9662         return 0;
9663 }
9664
9665 static int i40e_vsi_clear(struct i40e_vsi *vsi);
9666
9667 /**
9668  * i40e_fdir_sb_setup - initialize the Flow Director resources for Sideband
9669  * @pf: board private structure
9670  **/
9671 static void i40e_fdir_sb_setup(struct i40e_pf *pf)
9672 {
9673         struct i40e_vsi *vsi;
9674
9675         /* quick workaround for an NVM issue that leaves a critical register
9676          * uninitialized
9677          */
9678         if (!rd32(&pf->hw, I40E_GLQF_HKEY(0))) {
9679                 static const u32 hkey[] = {
9680                         0xe640d33f, 0xcdfe98ab, 0x73fa7161, 0x0d7a7d36,
9681                         0xeacb7d61, 0xaa4f05b6, 0x9c5c89ed, 0xfc425ddb,
9682                         0xa4654832, 0xfc7461d4, 0x8f827619, 0xf5c63c21,
9683                         0x95b3a76d};
9684                 int i;
9685
9686                 for (i = 0; i <= I40E_GLQF_HKEY_MAX_INDEX; i++)
9687                         wr32(&pf->hw, I40E_GLQF_HKEY(i), hkey[i]);
9688         }
9689
9690         if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
9691                 return;
9692
9693         /* find existing VSI and see if it needs configuring */
9694         vsi = i40e_find_vsi_by_type(pf, I40E_VSI_FDIR);
9695
9696         /* create a new VSI if none exists */
9697         if (!vsi) {
9698                 vsi = i40e_vsi_setup(pf, I40E_VSI_FDIR,
9699                                      pf->vsi[pf->lan_vsi]->seid, 0);
9700                 if (!vsi) {
9701                         dev_info(&pf->pdev->dev, "Couldn't create FDir VSI\n");
9702                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
9703                         pf->flags |= I40E_FLAG_FD_SB_INACTIVE;
9704                         return;
9705                 }
9706         }
9707
9708         i40e_vsi_setup_irqhandler(vsi, i40e_fdir_clean_ring);
9709 }
9710
9711 /**
9712  * i40e_fdir_teardown - release the Flow Director resources
9713  * @pf: board private structure
9714  **/
9715 static void i40e_fdir_teardown(struct i40e_pf *pf)
9716 {
9717         struct i40e_vsi *vsi;
9718
9719         i40e_fdir_filter_exit(pf);
9720         vsi = i40e_find_vsi_by_type(pf, I40E_VSI_FDIR);
9721         if (vsi)
9722                 i40e_vsi_release(vsi);
9723 }
9724
9725 /**
9726  * i40e_rebuild_cloud_filters - Rebuilds cloud filters for VSIs
9727  * @vsi: PF main vsi
9728  * @seid: seid of main or channel VSIs
9729  *
9730  * Rebuilds cloud filters associated with main VSI and channel VSIs if they
9731  * existed before reset
9732  **/
9733 static int i40e_rebuild_cloud_filters(struct i40e_vsi *vsi, u16 seid)
9734 {
9735         struct i40e_cloud_filter *cfilter;
9736         struct i40e_pf *pf = vsi->back;
9737         struct hlist_node *node;
9738         i40e_status ret;
9739
9740         /* Add cloud filters back if they exist */
9741         hlist_for_each_entry_safe(cfilter, node, &pf->cloud_filter_list,
9742                                   cloud_node) {
9743                 if (cfilter->seid != seid)
9744                         continue;
9745
9746                 if (cfilter->dst_port)
9747                         ret = i40e_add_del_cloud_filter_big_buf(vsi, cfilter,
9748                                                                 true);
9749                 else
9750                         ret = i40e_add_del_cloud_filter(vsi, cfilter, true);
9751
9752                 if (ret) {
9753                         dev_dbg(&pf->pdev->dev,
9754                                 "Failed to rebuild cloud filter, err %s aq_err %s\n",
9755                                 i40e_stat_str(&pf->hw, ret),
9756                                 i40e_aq_str(&pf->hw,
9757                                             pf->hw.aq.asq_last_status));
9758                         return ret;
9759                 }
9760         }
9761         return 0;
9762 }
9763
9764 /**
9765  * i40e_rebuild_channels - Rebuilds channel VSIs if they existed before reset
9766  * @vsi: PF main vsi
9767  *
9768  * Rebuilds channel VSIs if they existed before reset
9769  **/
9770 static int i40e_rebuild_channels(struct i40e_vsi *vsi)
9771 {
9772         struct i40e_channel *ch, *ch_tmp;
9773         i40e_status ret;
9774
9775         if (list_empty(&vsi->ch_list))
9776                 return 0;
9777
9778         list_for_each_entry_safe(ch, ch_tmp, &vsi->ch_list, list) {
9779                 if (!ch->initialized)
9780                         break;
9781                 /* Proceed with creation of channel (VMDq2) VSI */
9782                 ret = i40e_add_channel(vsi->back, vsi->uplink_seid, ch);
9783                 if (ret) {
9784                         dev_info(&vsi->back->pdev->dev,
9785                                  "failed to rebuild channels using uplink_seid %u\n",
9786                                  vsi->uplink_seid);
9787                         return ret;
9788                 }
9789                 /* Reconfigure TX queues using QTX_CTL register */
9790                 ret = i40e_channel_config_tx_ring(vsi->back, vsi, ch);
9791                 if (ret) {
9792                         dev_info(&vsi->back->pdev->dev,
9793                                  "failed to configure TX rings for channel %u\n",
9794                                  ch->seid);
9795                         return ret;
9796                 }
9797                 /* update 'next_base_queue' */
9798                 vsi->next_base_queue = vsi->next_base_queue +
9799                                                         ch->num_queue_pairs;
9800                 if (ch->max_tx_rate) {
9801                         u64 credits = ch->max_tx_rate;
9802
9803                         if (i40e_set_bw_limit(vsi, ch->seid,
9804                                               ch->max_tx_rate))
9805                                 return -EINVAL;
9806
9807                         do_div(credits, I40E_BW_CREDIT_DIVISOR);
9808                         dev_dbg(&vsi->back->pdev->dev,
9809                                 "Set tx rate of %llu Mbps (count of 50Mbps %llu) for vsi->seid %u\n",
9810                                 ch->max_tx_rate,
9811                                 credits,
9812                                 ch->seid);
9813                 }
9814                 ret = i40e_rebuild_cloud_filters(vsi, ch->seid);
9815                 if (ret) {
9816                         dev_dbg(&vsi->back->pdev->dev,
9817                                 "Failed to rebuild cloud filters for channel VSI %u\n",
9818                                 ch->seid);
9819                         return ret;
9820                 }
9821         }
9822         return 0;
9823 }
9824
9825 /**
9826  * i40e_prep_for_reset - prep for the core to reset
9827  * @pf: board private structure
9828  * @lock_acquired: indicates whether or not the lock has been acquired
9829  * before this function was called.
9830  *
9831  * Close up the VFs and other things in prep for PF Reset.
9832   **/
9833 static void i40e_prep_for_reset(struct i40e_pf *pf, bool lock_acquired)
9834 {
9835         struct i40e_hw *hw = &pf->hw;
9836         i40e_status ret = 0;
9837         u32 v;
9838
9839         clear_bit(__I40E_RESET_INTR_RECEIVED, pf->state);
9840         if (test_and_set_bit(__I40E_RESET_RECOVERY_PENDING, pf->state))
9841                 return;
9842         if (i40e_check_asq_alive(&pf->hw))
9843                 i40e_vc_notify_reset(pf);
9844
9845         dev_dbg(&pf->pdev->dev, "Tearing down internal switch for reset\n");
9846
9847         /* quiesce the VSIs and their queues that are not already DOWN */
9848         /* pf_quiesce_all_vsi modifies netdev structures -rtnl_lock needed */
9849         if (!lock_acquired)
9850                 rtnl_lock();
9851         i40e_pf_quiesce_all_vsi(pf);
9852         if (!lock_acquired)
9853                 rtnl_unlock();
9854
9855         for (v = 0; v < pf->num_alloc_vsi; v++) {
9856                 if (pf->vsi[v])
9857                         pf->vsi[v]->seid = 0;
9858         }
9859
9860         i40e_shutdown_adminq(&pf->hw);
9861
9862         /* call shutdown HMC */
9863         if (hw->hmc.hmc_obj) {
9864                 ret = i40e_shutdown_lan_hmc(hw);
9865                 if (ret)
9866                         dev_warn(&pf->pdev->dev,
9867                                  "shutdown_lan_hmc failed: %d\n", ret);
9868         }
9869
9870         /* Save the current PTP time so that we can restore the time after the
9871          * reset completes.
9872          */
9873         i40e_ptp_save_hw_time(pf);
9874 }
9875
9876 /**
9877  * i40e_send_version - update firmware with driver version
9878  * @pf: PF struct
9879  */
9880 static void i40e_send_version(struct i40e_pf *pf)
9881 {
9882         struct i40e_driver_version dv;
9883
9884         dv.major_version = 0xff;
9885         dv.minor_version = 0xff;
9886         dv.build_version = 0xff;
9887         dv.subbuild_version = 0;
9888         strlcpy(dv.driver_string, UTS_RELEASE, sizeof(dv.driver_string));
9889         i40e_aq_send_driver_version(&pf->hw, &dv, NULL);
9890 }
9891
9892 /**
9893  * i40e_get_oem_version - get OEM specific version information
9894  * @hw: pointer to the hardware structure
9895  **/
9896 static void i40e_get_oem_version(struct i40e_hw *hw)
9897 {
9898         u16 block_offset = 0xffff;
9899         u16 block_length = 0;
9900         u16 capabilities = 0;
9901         u16 gen_snap = 0;
9902         u16 release = 0;
9903
9904 #define I40E_SR_NVM_OEM_VERSION_PTR             0x1B
9905 #define I40E_NVM_OEM_LENGTH_OFFSET              0x00
9906 #define I40E_NVM_OEM_CAPABILITIES_OFFSET        0x01
9907 #define I40E_NVM_OEM_GEN_OFFSET                 0x02
9908 #define I40E_NVM_OEM_RELEASE_OFFSET             0x03
9909 #define I40E_NVM_OEM_CAPABILITIES_MASK          0x000F
9910 #define I40E_NVM_OEM_LENGTH                     3
9911
9912         /* Check if pointer to OEM version block is valid. */
9913         i40e_read_nvm_word(hw, I40E_SR_NVM_OEM_VERSION_PTR, &block_offset);
9914         if (block_offset == 0xffff)
9915                 return;
9916
9917         /* Check if OEM version block has correct length. */
9918         i40e_read_nvm_word(hw, block_offset + I40E_NVM_OEM_LENGTH_OFFSET,
9919                            &block_length);
9920         if (block_length < I40E_NVM_OEM_LENGTH)
9921                 return;
9922
9923         /* Check if OEM version format is as expected. */
9924         i40e_read_nvm_word(hw, block_offset + I40E_NVM_OEM_CAPABILITIES_OFFSET,
9925                            &capabilities);
9926         if ((capabilities & I40E_NVM_OEM_CAPABILITIES_MASK) != 0)
9927                 return;
9928
9929         i40e_read_nvm_word(hw, block_offset + I40E_NVM_OEM_GEN_OFFSET,
9930                            &gen_snap);
9931         i40e_read_nvm_word(hw, block_offset + I40E_NVM_OEM_RELEASE_OFFSET,
9932                            &release);
9933         hw->nvm.oem_ver = (gen_snap << I40E_OEM_SNAP_SHIFT) | release;
9934         hw->nvm.eetrack = I40E_OEM_EETRACK_ID;
9935 }
9936
9937 /**
9938  * i40e_reset - wait for core reset to finish reset, reset pf if corer not seen
9939  * @pf: board private structure
9940  **/
9941 static int i40e_reset(struct i40e_pf *pf)
9942 {
9943         struct i40e_hw *hw = &pf->hw;
9944         i40e_status ret;
9945
9946         ret = i40e_pf_reset(hw);
9947         if (ret) {
9948                 dev_info(&pf->pdev->dev, "PF reset failed, %d\n", ret);
9949                 set_bit(__I40E_RESET_FAILED, pf->state);
9950                 clear_bit(__I40E_RESET_RECOVERY_PENDING, pf->state);
9951         } else {
9952                 pf->pfr_count++;
9953         }
9954         return ret;
9955 }
9956
9957 /**
9958  * i40e_rebuild - rebuild using a saved config
9959  * @pf: board private structure
9960  * @reinit: if the Main VSI needs to re-initialized.
9961  * @lock_acquired: indicates whether or not the lock has been acquired
9962  * before this function was called.
9963  **/
9964 static void i40e_rebuild(struct i40e_pf *pf, bool reinit, bool lock_acquired)
9965 {
9966         int old_recovery_mode_bit = test_bit(__I40E_RECOVERY_MODE, pf->state);
9967         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
9968         struct i40e_hw *hw = &pf->hw;
9969         u8 set_fc_aq_fail = 0;
9970         i40e_status ret;
9971         u32 val;
9972         int v;
9973
9974         if (test_bit(__I40E_EMP_RESET_INTR_RECEIVED, pf->state) &&
9975             i40e_check_recovery_mode(pf)) {
9976                 i40e_set_ethtool_ops(pf->vsi[pf->lan_vsi]->netdev);
9977         }
9978
9979         if (test_bit(__I40E_DOWN, pf->state) &&
9980             !test_bit(__I40E_RECOVERY_MODE, pf->state) &&
9981             !old_recovery_mode_bit)
9982                 goto clear_recovery;
9983         dev_dbg(&pf->pdev->dev, "Rebuilding internal switch\n");
9984
9985         /* rebuild the basics for the AdminQ, HMC, and initial HW switch */
9986         ret = i40e_init_adminq(&pf->hw);
9987         if (ret) {
9988                 dev_info(&pf->pdev->dev, "Rebuild AdminQ failed, err %s aq_err %s\n",
9989                          i40e_stat_str(&pf->hw, ret),
9990                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
9991                 goto clear_recovery;
9992         }
9993         i40e_get_oem_version(&pf->hw);
9994
9995         if (test_bit(__I40E_EMP_RESET_INTR_RECEIVED, pf->state) &&
9996             ((hw->aq.fw_maj_ver == 4 && hw->aq.fw_min_ver <= 33) ||
9997              hw->aq.fw_maj_ver < 4) && hw->mac.type == I40E_MAC_XL710) {
9998                 /* The following delay is necessary for 4.33 firmware and older
9999                  * to recover after EMP reset. 200 ms should suffice but we
10000                  * put here 300 ms to be sure that FW is ready to operate
10001                  * after reset.
10002                  */
10003                 mdelay(300);
10004         }
10005
10006         /* re-verify the eeprom if we just had an EMP reset */
10007         if (test_and_clear_bit(__I40E_EMP_RESET_INTR_RECEIVED, pf->state))
10008                 i40e_verify_eeprom(pf);
10009
10010         /* if we are going out of or into recovery mode we have to act
10011          * accordingly with regard to resources initialization
10012          * and deinitialization
10013          */
10014         if (test_bit(__I40E_RECOVERY_MODE, pf->state) ||
10015             old_recovery_mode_bit) {
10016                 if (i40e_get_capabilities(pf,
10017                                           i40e_aqc_opc_list_func_capabilities))
10018                         goto end_unlock;
10019
10020                 if (test_bit(__I40E_RECOVERY_MODE, pf->state)) {
10021                         /* we're staying in recovery mode so we'll reinitialize
10022                          * misc vector here
10023                          */
10024                         if (i40e_setup_misc_vector_for_recovery_mode(pf))
10025                                 goto end_unlock;
10026                 } else {
10027                         if (!lock_acquired)
10028                                 rtnl_lock();
10029                         /* we're going out of recovery mode so we'll free
10030                          * the IRQ allocated specifically for recovery mode
10031                          * and restore the interrupt scheme
10032                          */
10033                         free_irq(pf->pdev->irq, pf);
10034                         i40e_clear_interrupt_scheme(pf);
10035                         if (i40e_restore_interrupt_scheme(pf))
10036                                 goto end_unlock;
10037                 }
10038
10039                 /* tell the firmware that we're starting */
10040                 i40e_send_version(pf);
10041
10042                 /* bail out in case recovery mode was detected, as there is
10043                  * no need for further configuration.
10044                  */
10045                 goto end_unlock;
10046         }
10047
10048         i40e_clear_pxe_mode(hw);
10049         ret = i40e_get_capabilities(pf, i40e_aqc_opc_list_func_capabilities);
10050         if (ret)
10051                 goto end_core_reset;
10052
10053         ret = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
10054                                 hw->func_caps.num_rx_qp, 0, 0);
10055         if (ret) {
10056                 dev_info(&pf->pdev->dev, "init_lan_hmc failed: %d\n", ret);
10057                 goto end_core_reset;
10058         }
10059         ret = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
10060         if (ret) {
10061                 dev_info(&pf->pdev->dev, "configure_lan_hmc failed: %d\n", ret);
10062                 goto end_core_reset;
10063         }
10064
10065         /* Enable FW to write a default DCB config on link-up */
10066         i40e_aq_set_dcb_parameters(hw, true, NULL);
10067
10068 #ifdef CONFIG_I40E_DCB
10069         ret = i40e_init_pf_dcb(pf);
10070         if (ret) {
10071                 dev_info(&pf->pdev->dev, "DCB init failed %d, disabled\n", ret);
10072                 pf->flags &= ~I40E_FLAG_DCB_CAPABLE;
10073                 /* Continue without DCB enabled */
10074         }
10075 #endif /* CONFIG_I40E_DCB */
10076         /* do basic switch setup */
10077         if (!lock_acquired)
10078                 rtnl_lock();
10079         ret = i40e_setup_pf_switch(pf, reinit);
10080         if (ret)
10081                 goto end_unlock;
10082
10083         /* The driver only wants link up/down and module qualification
10084          * reports from firmware.  Note the negative logic.
10085          */
10086         ret = i40e_aq_set_phy_int_mask(&pf->hw,
10087                                        ~(I40E_AQ_EVENT_LINK_UPDOWN |
10088                                          I40E_AQ_EVENT_MEDIA_NA |
10089                                          I40E_AQ_EVENT_MODULE_QUAL_FAIL), NULL);
10090         if (ret)
10091                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
10092                          i40e_stat_str(&pf->hw, ret),
10093                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10094
10095         /* make sure our flow control settings are restored */
10096         ret = i40e_set_fc(&pf->hw, &set_fc_aq_fail, true);
10097         if (ret)
10098                 dev_dbg(&pf->pdev->dev, "setting flow control: ret = %s last_status = %s\n",
10099                         i40e_stat_str(&pf->hw, ret),
10100                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10101
10102         /* Rebuild the VSIs and VEBs that existed before reset.
10103          * They are still in our local switch element arrays, so only
10104          * need to rebuild the switch model in the HW.
10105          *
10106          * If there were VEBs but the reconstitution failed, we'll try
10107          * try to recover minimal use by getting the basic PF VSI working.
10108          */
10109         if (vsi->uplink_seid != pf->mac_seid) {
10110                 dev_dbg(&pf->pdev->dev, "attempting to rebuild switch\n");
10111                 /* find the one VEB connected to the MAC, and find orphans */
10112                 for (v = 0; v < I40E_MAX_VEB; v++) {
10113                         if (!pf->veb[v])
10114                                 continue;
10115
10116                         if (pf->veb[v]->uplink_seid == pf->mac_seid ||
10117                             pf->veb[v]->uplink_seid == 0) {
10118                                 ret = i40e_reconstitute_veb(pf->veb[v]);
10119
10120                                 if (!ret)
10121                                         continue;
10122
10123                                 /* If Main VEB failed, we're in deep doodoo,
10124                                  * so give up rebuilding the switch and set up
10125                                  * for minimal rebuild of PF VSI.
10126                                  * If orphan failed, we'll report the error
10127                                  * but try to keep going.
10128                                  */
10129                                 if (pf->veb[v]->uplink_seid == pf->mac_seid) {
10130                                         dev_info(&pf->pdev->dev,
10131                                                  "rebuild of switch failed: %d, will try to set up simple PF connection\n",
10132                                                  ret);
10133                                         vsi->uplink_seid = pf->mac_seid;
10134                                         break;
10135                                 } else if (pf->veb[v]->uplink_seid == 0) {
10136                                         dev_info(&pf->pdev->dev,
10137                                                  "rebuild of orphan VEB failed: %d\n",
10138                                                  ret);
10139                                 }
10140                         }
10141                 }
10142         }
10143
10144         if (vsi->uplink_seid == pf->mac_seid) {
10145                 dev_dbg(&pf->pdev->dev, "attempting to rebuild PF VSI\n");
10146                 /* no VEB, so rebuild only the Main VSI */
10147                 ret = i40e_add_vsi(vsi);
10148                 if (ret) {
10149                         dev_info(&pf->pdev->dev,
10150                                  "rebuild of Main VSI failed: %d\n", ret);
10151                         goto end_unlock;
10152                 }
10153         }
10154
10155         if (vsi->mqprio_qopt.max_rate[0]) {
10156                 u64 max_tx_rate = vsi->mqprio_qopt.max_rate[0];
10157                 u64 credits = 0;
10158
10159                 do_div(max_tx_rate, I40E_BW_MBPS_DIVISOR);
10160                 ret = i40e_set_bw_limit(vsi, vsi->seid, max_tx_rate);
10161                 if (ret)
10162                         goto end_unlock;
10163
10164                 credits = max_tx_rate;
10165                 do_div(credits, I40E_BW_CREDIT_DIVISOR);
10166                 dev_dbg(&vsi->back->pdev->dev,
10167                         "Set tx rate of %llu Mbps (count of 50Mbps %llu) for vsi->seid %u\n",
10168                         max_tx_rate,
10169                         credits,
10170                         vsi->seid);
10171         }
10172
10173         ret = i40e_rebuild_cloud_filters(vsi, vsi->seid);
10174         if (ret)
10175                 goto end_unlock;
10176
10177         /* PF Main VSI is rebuild by now, go ahead and rebuild channel VSIs
10178          * for this main VSI if they exist
10179          */
10180         ret = i40e_rebuild_channels(vsi);
10181         if (ret)
10182                 goto end_unlock;
10183
10184         /* Reconfigure hardware for allowing smaller MSS in the case
10185          * of TSO, so that we avoid the MDD being fired and causing
10186          * a reset in the case of small MSS+TSO.
10187          */
10188 #define I40E_REG_MSS          0x000E64DC
10189 #define I40E_REG_MSS_MIN_MASK 0x3FF0000
10190 #define I40E_64BYTE_MSS       0x400000
10191         val = rd32(hw, I40E_REG_MSS);
10192         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
10193                 val &= ~I40E_REG_MSS_MIN_MASK;
10194                 val |= I40E_64BYTE_MSS;
10195                 wr32(hw, I40E_REG_MSS, val);
10196         }
10197
10198         if (pf->hw_features & I40E_HW_RESTART_AUTONEG) {
10199                 msleep(75);
10200                 ret = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
10201                 if (ret)
10202                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
10203                                  i40e_stat_str(&pf->hw, ret),
10204                                  i40e_aq_str(&pf->hw,
10205                                              pf->hw.aq.asq_last_status));
10206         }
10207         /* reinit the misc interrupt */
10208         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
10209                 ret = i40e_setup_misc_vector(pf);
10210
10211         /* Add a filter to drop all Flow control frames from any VSI from being
10212          * transmitted. By doing so we stop a malicious VF from sending out
10213          * PAUSE or PFC frames and potentially controlling traffic for other
10214          * PF/VF VSIs.
10215          * The FW can still send Flow control frames if enabled.
10216          */
10217         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
10218                                                        pf->main_vsi_seid);
10219
10220         /* restart the VSIs that were rebuilt and running before the reset */
10221         i40e_pf_unquiesce_all_vsi(pf);
10222
10223         /* Release the RTNL lock before we start resetting VFs */
10224         if (!lock_acquired)
10225                 rtnl_unlock();
10226
10227         /* Restore promiscuous settings */
10228         ret = i40e_set_promiscuous(pf, pf->cur_promisc);
10229         if (ret)
10230                 dev_warn(&pf->pdev->dev,
10231                          "Failed to restore promiscuous setting: %s, err %s aq_err %s\n",
10232                          pf->cur_promisc ? "on" : "off",
10233                          i40e_stat_str(&pf->hw, ret),
10234                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
10235
10236         i40e_reset_all_vfs(pf, true);
10237
10238         /* tell the firmware that we're starting */
10239         i40e_send_version(pf);
10240
10241         /* We've already released the lock, so don't do it again */
10242         goto end_core_reset;
10243
10244 end_unlock:
10245         if (!lock_acquired)
10246                 rtnl_unlock();
10247 end_core_reset:
10248         clear_bit(__I40E_RESET_FAILED, pf->state);
10249 clear_recovery:
10250         clear_bit(__I40E_RESET_RECOVERY_PENDING, pf->state);
10251         clear_bit(__I40E_TIMEOUT_RECOVERY_PENDING, pf->state);
10252 }
10253
10254 /**
10255  * i40e_reset_and_rebuild - reset and rebuild using a saved config
10256  * @pf: board private structure
10257  * @reinit: if the Main VSI needs to re-initialized.
10258  * @lock_acquired: indicates whether or not the lock has been acquired
10259  * before this function was called.
10260  **/
10261 static void i40e_reset_and_rebuild(struct i40e_pf *pf, bool reinit,
10262                                    bool lock_acquired)
10263 {
10264         int ret;
10265         /* Now we wait for GRST to settle out.
10266          * We don't have to delete the VEBs or VSIs from the hw switch
10267          * because the reset will make them disappear.
10268          */
10269         ret = i40e_reset(pf);
10270         if (!ret)
10271                 i40e_rebuild(pf, reinit, lock_acquired);
10272 }
10273
10274 /**
10275  * i40e_handle_reset_warning - prep for the PF to reset, reset and rebuild
10276  * @pf: board private structure
10277  *
10278  * Close up the VFs and other things in prep for a Core Reset,
10279  * then get ready to rebuild the world.
10280  * @lock_acquired: indicates whether or not the lock has been acquired
10281  * before this function was called.
10282  **/
10283 static void i40e_handle_reset_warning(struct i40e_pf *pf, bool lock_acquired)
10284 {
10285         i40e_prep_for_reset(pf, lock_acquired);
10286         i40e_reset_and_rebuild(pf, false, lock_acquired);
10287 }
10288
10289 /**
10290  * i40e_handle_mdd_event
10291  * @pf: pointer to the PF structure
10292  *
10293  * Called from the MDD irq handler to identify possibly malicious vfs
10294  **/
10295 static void i40e_handle_mdd_event(struct i40e_pf *pf)
10296 {
10297         struct i40e_hw *hw = &pf->hw;
10298         bool mdd_detected = false;
10299         struct i40e_vf *vf;
10300         u32 reg;
10301         int i;
10302
10303         if (!test_bit(__I40E_MDD_EVENT_PENDING, pf->state))
10304                 return;
10305
10306         /* find what triggered the MDD event */
10307         reg = rd32(hw, I40E_GL_MDET_TX);
10308         if (reg & I40E_GL_MDET_TX_VALID_MASK) {
10309                 u8 pf_num = (reg & I40E_GL_MDET_TX_PF_NUM_MASK) >>
10310                                 I40E_GL_MDET_TX_PF_NUM_SHIFT;
10311                 u16 vf_num = (reg & I40E_GL_MDET_TX_VF_NUM_MASK) >>
10312                                 I40E_GL_MDET_TX_VF_NUM_SHIFT;
10313                 u8 event = (reg & I40E_GL_MDET_TX_EVENT_MASK) >>
10314                                 I40E_GL_MDET_TX_EVENT_SHIFT;
10315                 u16 queue = ((reg & I40E_GL_MDET_TX_QUEUE_MASK) >>
10316                                 I40E_GL_MDET_TX_QUEUE_SHIFT) -
10317                                 pf->hw.func_caps.base_queue;
10318                 if (netif_msg_tx_err(pf))
10319                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on TX queue %d PF number 0x%02x VF number 0x%02x\n",
10320                                  event, queue, pf_num, vf_num);
10321                 wr32(hw, I40E_GL_MDET_TX, 0xffffffff);
10322                 mdd_detected = true;
10323         }
10324         reg = rd32(hw, I40E_GL_MDET_RX);
10325         if (reg & I40E_GL_MDET_RX_VALID_MASK) {
10326                 u8 func = (reg & I40E_GL_MDET_RX_FUNCTION_MASK) >>
10327                                 I40E_GL_MDET_RX_FUNCTION_SHIFT;
10328                 u8 event = (reg & I40E_GL_MDET_RX_EVENT_MASK) >>
10329                                 I40E_GL_MDET_RX_EVENT_SHIFT;
10330                 u16 queue = ((reg & I40E_GL_MDET_RX_QUEUE_MASK) >>
10331                                 I40E_GL_MDET_RX_QUEUE_SHIFT) -
10332                                 pf->hw.func_caps.base_queue;
10333                 if (netif_msg_rx_err(pf))
10334                         dev_info(&pf->pdev->dev, "Malicious Driver Detection event 0x%02x on RX queue %d of function 0x%02x\n",
10335                                  event, queue, func);
10336                 wr32(hw, I40E_GL_MDET_RX, 0xffffffff);
10337                 mdd_detected = true;
10338         }
10339
10340         if (mdd_detected) {
10341                 reg = rd32(hw, I40E_PF_MDET_TX);
10342                 if (reg & I40E_PF_MDET_TX_VALID_MASK) {
10343                         wr32(hw, I40E_PF_MDET_TX, 0xFFFF);
10344                         dev_dbg(&pf->pdev->dev, "TX driver issue detected on PF\n");
10345                 }
10346                 reg = rd32(hw, I40E_PF_MDET_RX);
10347                 if (reg & I40E_PF_MDET_RX_VALID_MASK) {
10348                         wr32(hw, I40E_PF_MDET_RX, 0xFFFF);
10349                         dev_dbg(&pf->pdev->dev, "RX driver issue detected on PF\n");
10350                 }
10351         }
10352
10353         /* see if one of the VFs needs its hand slapped */
10354         for (i = 0; i < pf->num_alloc_vfs && mdd_detected; i++) {
10355                 vf = &(pf->vf[i]);
10356                 reg = rd32(hw, I40E_VP_MDET_TX(i));
10357                 if (reg & I40E_VP_MDET_TX_VALID_MASK) {
10358                         wr32(hw, I40E_VP_MDET_TX(i), 0xFFFF);
10359                         vf->num_mdd_events++;
10360                         dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n",
10361                                  i);
10362                         dev_info(&pf->pdev->dev,
10363                                  "Use PF Control I/F to re-enable the VF\n");
10364                         set_bit(I40E_VF_STATE_DISABLED, &vf->vf_states);
10365                 }
10366
10367                 reg = rd32(hw, I40E_VP_MDET_RX(i));
10368                 if (reg & I40E_VP_MDET_RX_VALID_MASK) {
10369                         wr32(hw, I40E_VP_MDET_RX(i), 0xFFFF);
10370                         vf->num_mdd_events++;
10371                         dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n",
10372                                  i);
10373                         dev_info(&pf->pdev->dev,
10374                                  "Use PF Control I/F to re-enable the VF\n");
10375                         set_bit(I40E_VF_STATE_DISABLED, &vf->vf_states);
10376                 }
10377         }
10378
10379         /* re-enable mdd interrupt cause */
10380         clear_bit(__I40E_MDD_EVENT_PENDING, pf->state);
10381         reg = rd32(hw, I40E_PFINT_ICR0_ENA);
10382         reg |=  I40E_PFINT_ICR0_ENA_MAL_DETECT_MASK;
10383         wr32(hw, I40E_PFINT_ICR0_ENA, reg);
10384         i40e_flush(hw);
10385 }
10386
10387 static const char *i40e_tunnel_name(u8 type)
10388 {
10389         switch (type) {
10390         case UDP_TUNNEL_TYPE_VXLAN:
10391                 return "vxlan";
10392         case UDP_TUNNEL_TYPE_GENEVE:
10393                 return "geneve";
10394         default:
10395                 return "unknown";
10396         }
10397 }
10398
10399 /**
10400  * i40e_sync_udp_filters - Trigger a sync event for existing UDP filters
10401  * @pf: board private structure
10402  **/
10403 static void i40e_sync_udp_filters(struct i40e_pf *pf)
10404 {
10405         int i;
10406
10407         /* loop through and set pending bit for all active UDP filters */
10408         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
10409                 if (pf->udp_ports[i].port)
10410                         pf->pending_udp_bitmap |= BIT_ULL(i);
10411         }
10412
10413         set_bit(__I40E_UDP_FILTER_SYNC_PENDING, pf->state);
10414 }
10415
10416 /**
10417  * i40e_sync_udp_filters_subtask - Sync the VSI filter list with HW
10418  * @pf: board private structure
10419  **/
10420 static void i40e_sync_udp_filters_subtask(struct i40e_pf *pf)
10421 {
10422         struct i40e_hw *hw = &pf->hw;
10423         u8 filter_index, type;
10424         u16 port;
10425         int i;
10426
10427         if (!test_and_clear_bit(__I40E_UDP_FILTER_SYNC_PENDING, pf->state))
10428                 return;
10429
10430         /* acquire RTNL to maintain state of flags and port requests */
10431         rtnl_lock();
10432
10433         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
10434                 if (pf->pending_udp_bitmap & BIT_ULL(i)) {
10435                         struct i40e_udp_port_config *udp_port;
10436                         i40e_status ret = 0;
10437
10438                         udp_port = &pf->udp_ports[i];
10439                         pf->pending_udp_bitmap &= ~BIT_ULL(i);
10440
10441                         port = READ_ONCE(udp_port->port);
10442                         type = READ_ONCE(udp_port->type);
10443                         filter_index = READ_ONCE(udp_port->filter_index);
10444
10445                         /* release RTNL while we wait on AQ command */
10446                         rtnl_unlock();
10447
10448                         if (port)
10449                                 ret = i40e_aq_add_udp_tunnel(hw, port,
10450                                                              type,
10451                                                              &filter_index,
10452                                                              NULL);
10453                         else if (filter_index != I40E_UDP_PORT_INDEX_UNUSED)
10454                                 ret = i40e_aq_del_udp_tunnel(hw, filter_index,
10455                                                              NULL);
10456
10457                         /* reacquire RTNL so we can update filter_index */
10458                         rtnl_lock();
10459
10460                         if (ret) {
10461                                 dev_info(&pf->pdev->dev,
10462                                          "%s %s port %d, index %d failed, err %s aq_err %s\n",
10463                                          i40e_tunnel_name(type),
10464                                          port ? "add" : "delete",
10465                                          port,
10466                                          filter_index,
10467                                          i40e_stat_str(&pf->hw, ret),
10468                                          i40e_aq_str(&pf->hw,
10469                                                      pf->hw.aq.asq_last_status));
10470                                 if (port) {
10471                                         /* failed to add, just reset port,
10472                                          * drop pending bit for any deletion
10473                                          */
10474                                         udp_port->port = 0;
10475                                         pf->pending_udp_bitmap &= ~BIT_ULL(i);
10476                                 }
10477                         } else if (port) {
10478                                 /* record filter index on success */
10479                                 udp_port->filter_index = filter_index;
10480                         }
10481                 }
10482         }
10483
10484         rtnl_unlock();
10485 }
10486
10487 /**
10488  * i40e_service_task - Run the driver's async subtasks
10489  * @work: pointer to work_struct containing our data
10490  **/
10491 static void i40e_service_task(struct work_struct *work)
10492 {
10493         struct i40e_pf *pf = container_of(work,
10494                                           struct i40e_pf,
10495                                           service_task);
10496         unsigned long start_time = jiffies;
10497
10498         /* don't bother with service tasks if a reset is in progress */
10499         if (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state) ||
10500             test_bit(__I40E_SUSPENDED, pf->state))
10501                 return;
10502
10503         if (test_and_set_bit(__I40E_SERVICE_SCHED, pf->state))
10504                 return;
10505
10506         if (!test_bit(__I40E_RECOVERY_MODE, pf->state)) {
10507                 i40e_detect_recover_hung(pf->vsi[pf->lan_vsi]);
10508                 i40e_sync_filters_subtask(pf);
10509                 i40e_reset_subtask(pf);
10510                 i40e_handle_mdd_event(pf);
10511                 i40e_vc_process_vflr_event(pf);
10512                 i40e_watchdog_subtask(pf);
10513                 i40e_fdir_reinit_subtask(pf);
10514                 if (test_and_clear_bit(__I40E_CLIENT_RESET, pf->state)) {
10515                         /* Client subtask will reopen next time through. */
10516                         i40e_notify_client_of_netdev_close(pf->vsi[pf->lan_vsi],
10517                                                            true);
10518                 } else {
10519                         i40e_client_subtask(pf);
10520                         if (test_and_clear_bit(__I40E_CLIENT_L2_CHANGE,
10521                                                pf->state))
10522                                 i40e_notify_client_of_l2_param_changes(
10523                                                                 pf->vsi[pf->lan_vsi]);
10524                 }
10525                 i40e_sync_filters_subtask(pf);
10526                 i40e_sync_udp_filters_subtask(pf);
10527         } else {
10528                 i40e_reset_subtask(pf);
10529         }
10530
10531         i40e_clean_adminq_subtask(pf);
10532
10533         /* flush memory to make sure state is correct before next watchdog */
10534         smp_mb__before_atomic();
10535         clear_bit(__I40E_SERVICE_SCHED, pf->state);
10536
10537         /* If the tasks have taken longer than one timer cycle or there
10538          * is more work to be done, reschedule the service task now
10539          * rather than wait for the timer to tick again.
10540          */
10541         if (time_after(jiffies, (start_time + pf->service_timer_period)) ||
10542             test_bit(__I40E_ADMINQ_EVENT_PENDING, pf->state)             ||
10543             test_bit(__I40E_MDD_EVENT_PENDING, pf->state)                ||
10544             test_bit(__I40E_VFLR_EVENT_PENDING, pf->state))
10545                 i40e_service_event_schedule(pf);
10546 }
10547
10548 /**
10549  * i40e_service_timer - timer callback
10550  * @data: pointer to PF struct
10551  **/
10552 static void i40e_service_timer(struct timer_list *t)
10553 {
10554         struct i40e_pf *pf = from_timer(pf, t, service_timer);
10555
10556         mod_timer(&pf->service_timer,
10557                   round_jiffies(jiffies + pf->service_timer_period));
10558         i40e_service_event_schedule(pf);
10559 }
10560
10561 /**
10562  * i40e_set_num_rings_in_vsi - Determine number of rings in the VSI
10563  * @vsi: the VSI being configured
10564  **/
10565 static int i40e_set_num_rings_in_vsi(struct i40e_vsi *vsi)
10566 {
10567         struct i40e_pf *pf = vsi->back;
10568
10569         switch (vsi->type) {
10570         case I40E_VSI_MAIN:
10571                 vsi->alloc_queue_pairs = pf->num_lan_qps;
10572                 if (!vsi->num_tx_desc)
10573                         vsi->num_tx_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
10574                                                  I40E_REQ_DESCRIPTOR_MULTIPLE);
10575                 if (!vsi->num_rx_desc)
10576                         vsi->num_rx_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
10577                                                  I40E_REQ_DESCRIPTOR_MULTIPLE);
10578                 if (pf->flags & I40E_FLAG_MSIX_ENABLED)
10579                         vsi->num_q_vectors = pf->num_lan_msix;
10580                 else
10581                         vsi->num_q_vectors = 1;
10582
10583                 break;
10584
10585         case I40E_VSI_FDIR:
10586                 vsi->alloc_queue_pairs = 1;
10587                 vsi->num_tx_desc = ALIGN(I40E_FDIR_RING_COUNT,
10588                                          I40E_REQ_DESCRIPTOR_MULTIPLE);
10589                 vsi->num_rx_desc = ALIGN(I40E_FDIR_RING_COUNT,
10590                                          I40E_REQ_DESCRIPTOR_MULTIPLE);
10591                 vsi->num_q_vectors = pf->num_fdsb_msix;
10592                 break;
10593
10594         case I40E_VSI_VMDQ2:
10595                 vsi->alloc_queue_pairs = pf->num_vmdq_qps;
10596                 if (!vsi->num_tx_desc)
10597                         vsi->num_tx_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
10598                                                  I40E_REQ_DESCRIPTOR_MULTIPLE);
10599                 if (!vsi->num_rx_desc)
10600                         vsi->num_rx_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
10601                                                  I40E_REQ_DESCRIPTOR_MULTIPLE);
10602                 vsi->num_q_vectors = pf->num_vmdq_msix;
10603                 break;
10604
10605         case I40E_VSI_SRIOV:
10606                 vsi->alloc_queue_pairs = pf->num_vf_qps;
10607                 if (!vsi->num_tx_desc)
10608                         vsi->num_tx_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
10609                                                  I40E_REQ_DESCRIPTOR_MULTIPLE);
10610                 if (!vsi->num_rx_desc)
10611                         vsi->num_rx_desc = ALIGN(I40E_DEFAULT_NUM_DESCRIPTORS,
10612                                                  I40E_REQ_DESCRIPTOR_MULTIPLE);
10613                 break;
10614
10615         default:
10616                 WARN_ON(1);
10617                 return -ENODATA;
10618         }
10619
10620         return 0;
10621 }
10622
10623 /**
10624  * i40e_vsi_alloc_arrays - Allocate queue and vector pointer arrays for the vsi
10625  * @vsi: VSI pointer
10626  * @alloc_qvectors: a bool to specify if q_vectors need to be allocated.
10627  *
10628  * On error: returns error code (negative)
10629  * On success: returns 0
10630  **/
10631 static int i40e_vsi_alloc_arrays(struct i40e_vsi *vsi, bool alloc_qvectors)
10632 {
10633         struct i40e_ring **next_rings;
10634         int size;
10635         int ret = 0;
10636
10637         /* allocate memory for both Tx, XDP Tx and Rx ring pointers */
10638         size = sizeof(struct i40e_ring *) * vsi->alloc_queue_pairs *
10639                (i40e_enabled_xdp_vsi(vsi) ? 3 : 2);
10640         vsi->tx_rings = kzalloc(size, GFP_KERNEL);
10641         if (!vsi->tx_rings)
10642                 return -ENOMEM;
10643         next_rings = vsi->tx_rings + vsi->alloc_queue_pairs;
10644         if (i40e_enabled_xdp_vsi(vsi)) {
10645                 vsi->xdp_rings = next_rings;
10646                 next_rings += vsi->alloc_queue_pairs;
10647         }
10648         vsi->rx_rings = next_rings;
10649
10650         if (alloc_qvectors) {
10651                 /* allocate memory for q_vector pointers */
10652                 size = sizeof(struct i40e_q_vector *) * vsi->num_q_vectors;
10653                 vsi->q_vectors = kzalloc(size, GFP_KERNEL);
10654                 if (!vsi->q_vectors) {
10655                         ret = -ENOMEM;
10656                         goto err_vectors;
10657                 }
10658         }
10659         return ret;
10660
10661 err_vectors:
10662         kfree(vsi->tx_rings);
10663         return ret;
10664 }
10665
10666 /**
10667  * i40e_vsi_mem_alloc - Allocates the next available struct vsi in the PF
10668  * @pf: board private structure
10669  * @type: type of VSI
10670  *
10671  * On error: returns error code (negative)
10672  * On success: returns vsi index in PF (positive)
10673  **/
10674 static int i40e_vsi_mem_alloc(struct i40e_pf *pf, enum i40e_vsi_type type)
10675 {
10676         int ret = -ENODEV;
10677         struct i40e_vsi *vsi;
10678         int vsi_idx;
10679         int i;
10680
10681         /* Need to protect the allocation of the VSIs at the PF level */
10682         mutex_lock(&pf->switch_mutex);
10683
10684         /* VSI list may be fragmented if VSI creation/destruction has
10685          * been happening.  We can afford to do a quick scan to look
10686          * for any free VSIs in the list.
10687          *
10688          * find next empty vsi slot, looping back around if necessary
10689          */
10690         i = pf->next_vsi;
10691         while (i < pf->num_alloc_vsi && pf->vsi[i])
10692                 i++;
10693         if (i >= pf->num_alloc_vsi) {
10694                 i = 0;
10695                 while (i < pf->next_vsi && pf->vsi[i])
10696                         i++;
10697         }
10698
10699         if (i < pf->num_alloc_vsi && !pf->vsi[i]) {
10700                 vsi_idx = i;             /* Found one! */
10701         } else {
10702                 ret = -ENODEV;
10703                 goto unlock_pf;  /* out of VSI slots! */
10704         }
10705         pf->next_vsi = ++i;
10706
10707         vsi = kzalloc(sizeof(*vsi), GFP_KERNEL);
10708         if (!vsi) {
10709                 ret = -ENOMEM;
10710                 goto unlock_pf;
10711         }
10712         vsi->type = type;
10713         vsi->back = pf;
10714         set_bit(__I40E_VSI_DOWN, vsi->state);
10715         vsi->flags = 0;
10716         vsi->idx = vsi_idx;
10717         vsi->int_rate_limit = 0;
10718         vsi->rss_table_size = (vsi->type == I40E_VSI_MAIN) ?
10719                                 pf->rss_table_size : 64;
10720         vsi->netdev_registered = false;
10721         vsi->work_limit = I40E_DEFAULT_IRQ_WORK;
10722         hash_init(vsi->mac_filter_hash);
10723         vsi->irqs_ready = false;
10724
10725         if (type == I40E_VSI_MAIN) {
10726                 vsi->af_xdp_zc_qps = bitmap_zalloc(pf->num_lan_qps, GFP_KERNEL);
10727                 if (!vsi->af_xdp_zc_qps)
10728                         goto err_rings;
10729         }
10730
10731         ret = i40e_set_num_rings_in_vsi(vsi);
10732         if (ret)
10733                 goto err_rings;
10734
10735         ret = i40e_vsi_alloc_arrays(vsi, true);
10736         if (ret)
10737                 goto err_rings;
10738
10739         /* Setup default MSIX irq handler for VSI */
10740         i40e_vsi_setup_irqhandler(vsi, i40e_msix_clean_rings);
10741
10742         /* Initialize VSI lock */
10743         spin_lock_init(&vsi->mac_filter_hash_lock);
10744         pf->vsi[vsi_idx] = vsi;
10745         ret = vsi_idx;
10746         goto unlock_pf;
10747
10748 err_rings:
10749         bitmap_free(vsi->af_xdp_zc_qps);
10750         pf->next_vsi = i - 1;
10751         kfree(vsi);
10752 unlock_pf:
10753         mutex_unlock(&pf->switch_mutex);
10754         return ret;
10755 }
10756
10757 /**
10758  * i40e_vsi_free_arrays - Free queue and vector pointer arrays for the VSI
10759  * @vsi: VSI pointer
10760  * @free_qvectors: a bool to specify if q_vectors need to be freed.
10761  *
10762  * On error: returns error code (negative)
10763  * On success: returns 0
10764  **/
10765 static void i40e_vsi_free_arrays(struct i40e_vsi *vsi, bool free_qvectors)
10766 {
10767         /* free the ring and vector containers */
10768         if (free_qvectors) {
10769                 kfree(vsi->q_vectors);
10770                 vsi->q_vectors = NULL;
10771         }
10772         kfree(vsi->tx_rings);
10773         vsi->tx_rings = NULL;
10774         vsi->rx_rings = NULL;
10775         vsi->xdp_rings = NULL;
10776 }
10777
10778 /**
10779  * i40e_clear_rss_config_user - clear the user configured RSS hash keys
10780  * and lookup table
10781  * @vsi: Pointer to VSI structure
10782  */
10783 static void i40e_clear_rss_config_user(struct i40e_vsi *vsi)
10784 {
10785         if (!vsi)
10786                 return;
10787
10788         kfree(vsi->rss_hkey_user);
10789         vsi->rss_hkey_user = NULL;
10790
10791         kfree(vsi->rss_lut_user);
10792         vsi->rss_lut_user = NULL;
10793 }
10794
10795 /**
10796  * i40e_vsi_clear - Deallocate the VSI provided
10797  * @vsi: the VSI being un-configured
10798  **/
10799 static int i40e_vsi_clear(struct i40e_vsi *vsi)
10800 {
10801         struct i40e_pf *pf;
10802
10803         if (!vsi)
10804                 return 0;
10805
10806         if (!vsi->back)
10807                 goto free_vsi;
10808         pf = vsi->back;
10809
10810         mutex_lock(&pf->switch_mutex);
10811         if (!pf->vsi[vsi->idx]) {
10812                 dev_err(&pf->pdev->dev, "pf->vsi[%d] is NULL, just free vsi[%d](type %d)\n",
10813                         vsi->idx, vsi->idx, vsi->type);
10814                 goto unlock_vsi;
10815         }
10816
10817         if (pf->vsi[vsi->idx] != vsi) {
10818                 dev_err(&pf->pdev->dev,
10819                         "pf->vsi[%d](type %d) != vsi[%d](type %d): no free!\n",
10820                         pf->vsi[vsi->idx]->idx,
10821                         pf->vsi[vsi->idx]->type,
10822                         vsi->idx, vsi->type);
10823                 goto unlock_vsi;
10824         }
10825
10826         /* updates the PF for this cleared vsi */
10827         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
10828         i40e_put_lump(pf->irq_pile, vsi->base_vector, vsi->idx);
10829
10830         bitmap_free(vsi->af_xdp_zc_qps);
10831         i40e_vsi_free_arrays(vsi, true);
10832         i40e_clear_rss_config_user(vsi);
10833
10834         pf->vsi[vsi->idx] = NULL;
10835         if (vsi->idx < pf->next_vsi)
10836                 pf->next_vsi = vsi->idx;
10837
10838 unlock_vsi:
10839         mutex_unlock(&pf->switch_mutex);
10840 free_vsi:
10841         kfree(vsi);
10842
10843         return 0;
10844 }
10845
10846 /**
10847  * i40e_vsi_clear_rings - Deallocates the Rx and Tx rings for the provided VSI
10848  * @vsi: the VSI being cleaned
10849  **/
10850 static void i40e_vsi_clear_rings(struct i40e_vsi *vsi)
10851 {
10852         int i;
10853
10854         if (vsi->tx_rings && vsi->tx_rings[0]) {
10855                 for (i = 0; i < vsi->alloc_queue_pairs; i++) {
10856                         kfree_rcu(vsi->tx_rings[i], rcu);
10857                         WRITE_ONCE(vsi->tx_rings[i], NULL);
10858                         WRITE_ONCE(vsi->rx_rings[i], NULL);
10859                         if (vsi->xdp_rings)
10860                                 WRITE_ONCE(vsi->xdp_rings[i], NULL);
10861                 }
10862         }
10863 }
10864
10865 /**
10866  * i40e_alloc_rings - Allocates the Rx and Tx rings for the provided VSI
10867  * @vsi: the VSI being configured
10868  **/
10869 static int i40e_alloc_rings(struct i40e_vsi *vsi)
10870 {
10871         int i, qpv = i40e_enabled_xdp_vsi(vsi) ? 3 : 2;
10872         struct i40e_pf *pf = vsi->back;
10873         struct i40e_ring *ring;
10874
10875         /* Set basic values in the rings to be used later during open() */
10876         for (i = 0; i < vsi->alloc_queue_pairs; i++) {
10877                 /* allocate space for both Tx and Rx in one shot */
10878                 ring = kcalloc(qpv, sizeof(struct i40e_ring), GFP_KERNEL);
10879                 if (!ring)
10880                         goto err_out;
10881
10882                 ring->queue_index = i;
10883                 ring->reg_idx = vsi->base_queue + i;
10884                 ring->ring_active = false;
10885                 ring->vsi = vsi;
10886                 ring->netdev = vsi->netdev;
10887                 ring->dev = &pf->pdev->dev;
10888                 ring->count = vsi->num_tx_desc;
10889                 ring->size = 0;
10890                 ring->dcb_tc = 0;
10891                 if (vsi->back->hw_features & I40E_HW_WB_ON_ITR_CAPABLE)
10892                         ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
10893                 ring->itr_setting = pf->tx_itr_default;
10894                 WRITE_ONCE(vsi->tx_rings[i], ring++);
10895
10896                 if (!i40e_enabled_xdp_vsi(vsi))
10897                         goto setup_rx;
10898
10899                 ring->queue_index = vsi->alloc_queue_pairs + i;
10900                 ring->reg_idx = vsi->base_queue + ring->queue_index;
10901                 ring->ring_active = false;
10902                 ring->vsi = vsi;
10903                 ring->netdev = NULL;
10904                 ring->dev = &pf->pdev->dev;
10905                 ring->count = vsi->num_tx_desc;
10906                 ring->size = 0;
10907                 ring->dcb_tc = 0;
10908                 if (vsi->back->hw_features & I40E_HW_WB_ON_ITR_CAPABLE)
10909                         ring->flags = I40E_TXR_FLAGS_WB_ON_ITR;
10910                 set_ring_xdp(ring);
10911                 ring->itr_setting = pf->tx_itr_default;
10912                 WRITE_ONCE(vsi->xdp_rings[i], ring++);
10913
10914 setup_rx:
10915                 ring->queue_index = i;
10916                 ring->reg_idx = vsi->base_queue + i;
10917                 ring->ring_active = false;
10918                 ring->vsi = vsi;
10919                 ring->netdev = vsi->netdev;
10920                 ring->dev = &pf->pdev->dev;
10921                 ring->count = vsi->num_rx_desc;
10922                 ring->size = 0;
10923                 ring->dcb_tc = 0;
10924                 ring->itr_setting = pf->rx_itr_default;
10925                 WRITE_ONCE(vsi->rx_rings[i], ring);
10926         }
10927
10928         return 0;
10929
10930 err_out:
10931         i40e_vsi_clear_rings(vsi);
10932         return -ENOMEM;
10933 }
10934
10935 /**
10936  * i40e_reserve_msix_vectors - Reserve MSI-X vectors in the kernel
10937  * @pf: board private structure
10938  * @vectors: the number of MSI-X vectors to request
10939  *
10940  * Returns the number of vectors reserved, or error
10941  **/
10942 static int i40e_reserve_msix_vectors(struct i40e_pf *pf, int vectors)
10943 {
10944         vectors = pci_enable_msix_range(pf->pdev, pf->msix_entries,
10945                                         I40E_MIN_MSIX, vectors);
10946         if (vectors < 0) {
10947                 dev_info(&pf->pdev->dev,
10948                          "MSI-X vector reservation failed: %d\n", vectors);
10949                 vectors = 0;
10950         }
10951
10952         return vectors;
10953 }
10954
10955 /**
10956  * i40e_init_msix - Setup the MSIX capability
10957  * @pf: board private structure
10958  *
10959  * Work with the OS to set up the MSIX vectors needed.
10960  *
10961  * Returns the number of vectors reserved or negative on failure
10962  **/
10963 static int i40e_init_msix(struct i40e_pf *pf)
10964 {
10965         struct i40e_hw *hw = &pf->hw;
10966         int cpus, extra_vectors;
10967         int vectors_left;
10968         int v_budget, i;
10969         int v_actual;
10970         int iwarp_requested = 0;
10971
10972         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
10973                 return -ENODEV;
10974
10975         /* The number of vectors we'll request will be comprised of:
10976          *   - Add 1 for "other" cause for Admin Queue events, etc.
10977          *   - The number of LAN queue pairs
10978          *      - Queues being used for RSS.
10979          *              We don't need as many as max_rss_size vectors.
10980          *              use rss_size instead in the calculation since that
10981          *              is governed by number of cpus in the system.
10982          *      - assumes symmetric Tx/Rx pairing
10983          *   - The number of VMDq pairs
10984          *   - The CPU count within the NUMA node if iWARP is enabled
10985          * Once we count this up, try the request.
10986          *
10987          * If we can't get what we want, we'll simplify to nearly nothing
10988          * and try again.  If that still fails, we punt.
10989          */
10990         vectors_left = hw->func_caps.num_msix_vectors;
10991         v_budget = 0;
10992
10993         /* reserve one vector for miscellaneous handler */
10994         if (vectors_left) {
10995                 v_budget++;
10996                 vectors_left--;
10997         }
10998
10999         /* reserve some vectors for the main PF traffic queues. Initially we
11000          * only reserve at most 50% of the available vectors, in the case that
11001          * the number of online CPUs is large. This ensures that we can enable
11002          * extra features as well. Once we've enabled the other features, we
11003          * will use any remaining vectors to reach as close as we can to the
11004          * number of online CPUs.
11005          */
11006         cpus = num_online_cpus();
11007         pf->num_lan_msix = min_t(int, cpus, vectors_left / 2);
11008         vectors_left -= pf->num_lan_msix;
11009
11010         /* reserve one vector for sideband flow director */
11011         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
11012                 if (vectors_left) {
11013                         pf->num_fdsb_msix = 1;
11014                         v_budget++;
11015                         vectors_left--;
11016                 } else {
11017                         pf->num_fdsb_msix = 0;
11018                 }
11019         }
11020
11021         /* can we reserve enough for iWARP? */
11022         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
11023                 iwarp_requested = pf->num_iwarp_msix;
11024
11025                 if (!vectors_left)
11026                         pf->num_iwarp_msix = 0;
11027                 else if (vectors_left < pf->num_iwarp_msix)
11028                         pf->num_iwarp_msix = 1;
11029                 v_budget += pf->num_iwarp_msix;
11030                 vectors_left -= pf->num_iwarp_msix;
11031         }
11032
11033         /* any vectors left over go for VMDq support */
11034         if (pf->flags & I40E_FLAG_VMDQ_ENABLED) {
11035                 if (!vectors_left) {
11036                         pf->num_vmdq_msix = 0;
11037                         pf->num_vmdq_qps = 0;
11038                 } else {
11039                         int vmdq_vecs_wanted =
11040                                 pf->num_vmdq_vsis * pf->num_vmdq_qps;
11041                         int vmdq_vecs =
11042                                 min_t(int, vectors_left, vmdq_vecs_wanted);
11043
11044                         /* if we're short on vectors for what's desired, we limit
11045                          * the queues per vmdq.  If this is still more than are
11046                          * available, the user will need to change the number of
11047                          * queues/vectors used by the PF later with the ethtool
11048                          * channels command
11049                          */
11050                         if (vectors_left < vmdq_vecs_wanted) {
11051                                 pf->num_vmdq_qps = 1;
11052                                 vmdq_vecs_wanted = pf->num_vmdq_vsis;
11053                                 vmdq_vecs = min_t(int,
11054                                                   vectors_left,
11055                                                   vmdq_vecs_wanted);
11056                         }
11057                         pf->num_vmdq_msix = pf->num_vmdq_qps;
11058
11059                         v_budget += vmdq_vecs;
11060                         vectors_left -= vmdq_vecs;
11061                 }
11062         }
11063
11064         /* On systems with a large number of SMP cores, we previously limited
11065          * the number of vectors for num_lan_msix to be at most 50% of the
11066          * available vectors, to allow for other features. Now, we add back
11067          * the remaining vectors. However, we ensure that the total
11068          * num_lan_msix will not exceed num_online_cpus(). To do this, we
11069          * calculate the number of vectors we can add without going over the
11070          * cap of CPUs. For systems with a small number of CPUs this will be
11071          * zero.
11072          */
11073         extra_vectors = min_t(int, cpus - pf->num_lan_msix, vectors_left);
11074         pf->num_lan_msix += extra_vectors;
11075         vectors_left -= extra_vectors;
11076
11077         WARN(vectors_left < 0,
11078              "Calculation of remaining vectors underflowed. This is an accounting bug when determining total MSI-X vectors.\n");
11079
11080         v_budget += pf->num_lan_msix;
11081         pf->msix_entries = kcalloc(v_budget, sizeof(struct msix_entry),
11082                                    GFP_KERNEL);
11083         if (!pf->msix_entries)
11084                 return -ENOMEM;
11085
11086         for (i = 0; i < v_budget; i++)
11087                 pf->msix_entries[i].entry = i;
11088         v_actual = i40e_reserve_msix_vectors(pf, v_budget);
11089
11090         if (v_actual < I40E_MIN_MSIX) {
11091                 pf->flags &= ~I40E_FLAG_MSIX_ENABLED;
11092                 kfree(pf->msix_entries);
11093                 pf->msix_entries = NULL;
11094                 pci_disable_msix(pf->pdev);
11095                 return -ENODEV;
11096
11097         } else if (v_actual == I40E_MIN_MSIX) {
11098                 /* Adjust for minimal MSIX use */
11099                 pf->num_vmdq_vsis = 0;
11100                 pf->num_vmdq_qps = 0;
11101                 pf->num_lan_qps = 1;
11102                 pf->num_lan_msix = 1;
11103
11104         } else if (v_actual != v_budget) {
11105                 /* If we have limited resources, we will start with no vectors
11106                  * for the special features and then allocate vectors to some
11107                  * of these features based on the policy and at the end disable
11108                  * the features that did not get any vectors.
11109                  */
11110                 int vec;
11111
11112                 dev_info(&pf->pdev->dev,
11113                          "MSI-X vector limit reached with %d, wanted %d, attempting to redistribute vectors\n",
11114                          v_actual, v_budget);
11115                 /* reserve the misc vector */
11116                 vec = v_actual - 1;
11117
11118                 /* Scale vector usage down */
11119                 pf->num_vmdq_msix = 1;    /* force VMDqs to only one vector */
11120                 pf->num_vmdq_vsis = 1;
11121                 pf->num_vmdq_qps = 1;
11122
11123                 /* partition out the remaining vectors */
11124                 switch (vec) {
11125                 case 2:
11126                         pf->num_lan_msix = 1;
11127                         break;
11128                 case 3:
11129                         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
11130                                 pf->num_lan_msix = 1;
11131                                 pf->num_iwarp_msix = 1;
11132                         } else {
11133                                 pf->num_lan_msix = 2;
11134                         }
11135                         break;
11136                 default:
11137                         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
11138                                 pf->num_iwarp_msix = min_t(int, (vec / 3),
11139                                                  iwarp_requested);
11140                                 pf->num_vmdq_vsis = min_t(int, (vec / 3),
11141                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
11142                         } else {
11143                                 pf->num_vmdq_vsis = min_t(int, (vec / 2),
11144                                                   I40E_DEFAULT_NUM_VMDQ_VSI);
11145                         }
11146                         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
11147                                 pf->num_fdsb_msix = 1;
11148                                 vec--;
11149                         }
11150                         pf->num_lan_msix = min_t(int,
11151                                (vec - (pf->num_iwarp_msix + pf->num_vmdq_vsis)),
11152                                                               pf->num_lan_msix);
11153                         pf->num_lan_qps = pf->num_lan_msix;
11154                         break;
11155                 }
11156         }
11157
11158         if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) &&
11159             (pf->num_fdsb_msix == 0)) {
11160                 dev_info(&pf->pdev->dev, "Sideband Flowdir disabled, not enough MSI-X vectors\n");
11161                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
11162                 pf->flags |= I40E_FLAG_FD_SB_INACTIVE;
11163         }
11164         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
11165             (pf->num_vmdq_msix == 0)) {
11166                 dev_info(&pf->pdev->dev, "VMDq disabled, not enough MSI-X vectors\n");
11167                 pf->flags &= ~I40E_FLAG_VMDQ_ENABLED;
11168         }
11169
11170         if ((pf->flags & I40E_FLAG_IWARP_ENABLED) &&
11171             (pf->num_iwarp_msix == 0)) {
11172                 dev_info(&pf->pdev->dev, "IWARP disabled, not enough MSI-X vectors\n");
11173                 pf->flags &= ~I40E_FLAG_IWARP_ENABLED;
11174         }
11175         i40e_debug(&pf->hw, I40E_DEBUG_INIT,
11176                    "MSI-X vector distribution: PF %d, VMDq %d, FDSB %d, iWARP %d\n",
11177                    pf->num_lan_msix,
11178                    pf->num_vmdq_msix * pf->num_vmdq_vsis,
11179                    pf->num_fdsb_msix,
11180                    pf->num_iwarp_msix);
11181
11182         return v_actual;
11183 }
11184
11185 /**
11186  * i40e_vsi_alloc_q_vector - Allocate memory for a single interrupt vector
11187  * @vsi: the VSI being configured
11188  * @v_idx: index of the vector in the vsi struct
11189  * @cpu: cpu to be used on affinity_mask
11190  *
11191  * We allocate one q_vector.  If allocation fails we return -ENOMEM.
11192  **/
11193 static int i40e_vsi_alloc_q_vector(struct i40e_vsi *vsi, int v_idx, int cpu)
11194 {
11195         struct i40e_q_vector *q_vector;
11196
11197         /* allocate q_vector */
11198         q_vector = kzalloc(sizeof(struct i40e_q_vector), GFP_KERNEL);
11199         if (!q_vector)
11200                 return -ENOMEM;
11201
11202         q_vector->vsi = vsi;
11203         q_vector->v_idx = v_idx;
11204         cpumask_copy(&q_vector->affinity_mask, cpu_possible_mask);
11205
11206         if (vsi->netdev)
11207                 netif_napi_add(vsi->netdev, &q_vector->napi,
11208                                i40e_napi_poll, NAPI_POLL_WEIGHT);
11209
11210         /* tie q_vector and vsi together */
11211         vsi->q_vectors[v_idx] = q_vector;
11212
11213         return 0;
11214 }
11215
11216 /**
11217  * i40e_vsi_alloc_q_vectors - Allocate memory for interrupt vectors
11218  * @vsi: the VSI being configured
11219  *
11220  * We allocate one q_vector per queue interrupt.  If allocation fails we
11221  * return -ENOMEM.
11222  **/
11223 static int i40e_vsi_alloc_q_vectors(struct i40e_vsi *vsi)
11224 {
11225         struct i40e_pf *pf = vsi->back;
11226         int err, v_idx, num_q_vectors, current_cpu;
11227
11228         /* if not MSIX, give the one vector only to the LAN VSI */
11229         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
11230                 num_q_vectors = vsi->num_q_vectors;
11231         else if (vsi == pf->vsi[pf->lan_vsi])
11232                 num_q_vectors = 1;
11233         else
11234                 return -EINVAL;
11235
11236         current_cpu = cpumask_first(cpu_online_mask);
11237
11238         for (v_idx = 0; v_idx < num_q_vectors; v_idx++) {
11239                 err = i40e_vsi_alloc_q_vector(vsi, v_idx, current_cpu);
11240                 if (err)
11241                         goto err_out;
11242                 current_cpu = cpumask_next(current_cpu, cpu_online_mask);
11243                 if (unlikely(current_cpu >= nr_cpu_ids))
11244                         current_cpu = cpumask_first(cpu_online_mask);
11245         }
11246
11247         return 0;
11248
11249 err_out:
11250         while (v_idx--)
11251                 i40e_free_q_vector(vsi, v_idx);
11252
11253         return err;
11254 }
11255
11256 /**
11257  * i40e_init_interrupt_scheme - Determine proper interrupt scheme
11258  * @pf: board private structure to initialize
11259  **/
11260 static int i40e_init_interrupt_scheme(struct i40e_pf *pf)
11261 {
11262         int vectors = 0;
11263         ssize_t size;
11264
11265         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
11266                 vectors = i40e_init_msix(pf);
11267                 if (vectors < 0) {
11268                         pf->flags &= ~(I40E_FLAG_MSIX_ENABLED   |
11269                                        I40E_FLAG_IWARP_ENABLED  |
11270                                        I40E_FLAG_RSS_ENABLED    |
11271                                        I40E_FLAG_DCB_CAPABLE    |
11272                                        I40E_FLAG_DCB_ENABLED    |
11273                                        I40E_FLAG_SRIOV_ENABLED  |
11274                                        I40E_FLAG_FD_SB_ENABLED  |
11275                                        I40E_FLAG_FD_ATR_ENABLED |
11276                                        I40E_FLAG_VMDQ_ENABLED);
11277                         pf->flags |= I40E_FLAG_FD_SB_INACTIVE;
11278
11279                         /* rework the queue expectations without MSIX */
11280                         i40e_determine_queue_usage(pf);
11281                 }
11282         }
11283
11284         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED) &&
11285             (pf->flags & I40E_FLAG_MSI_ENABLED)) {
11286                 dev_info(&pf->pdev->dev, "MSI-X not available, trying MSI\n");
11287                 vectors = pci_enable_msi(pf->pdev);
11288                 if (vectors < 0) {
11289                         dev_info(&pf->pdev->dev, "MSI init failed - %d\n",
11290                                  vectors);
11291                         pf->flags &= ~I40E_FLAG_MSI_ENABLED;
11292                 }
11293                 vectors = 1;  /* one MSI or Legacy vector */
11294         }
11295
11296         if (!(pf->flags & (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED)))
11297                 dev_info(&pf->pdev->dev, "MSI-X and MSI not available, falling back to Legacy IRQ\n");
11298
11299         /* set up vector assignment tracking */
11300         size = sizeof(struct i40e_lump_tracking) + (sizeof(u16) * vectors);
11301         pf->irq_pile = kzalloc(size, GFP_KERNEL);
11302         if (!pf->irq_pile)
11303                 return -ENOMEM;
11304
11305         pf->irq_pile->num_entries = vectors;
11306         pf->irq_pile->search_hint = 0;
11307
11308         /* track first vector for misc interrupts, ignore return */
11309         (void)i40e_get_lump(pf, pf->irq_pile, 1, I40E_PILE_VALID_BIT - 1);
11310
11311         return 0;
11312 }
11313
11314 /**
11315  * i40e_restore_interrupt_scheme - Restore the interrupt scheme
11316  * @pf: private board data structure
11317  *
11318  * Restore the interrupt scheme that was cleared when we suspended the
11319  * device. This should be called during resume to re-allocate the q_vectors
11320  * and reacquire IRQs.
11321  */
11322 static int i40e_restore_interrupt_scheme(struct i40e_pf *pf)
11323 {
11324         int err, i;
11325
11326         /* We cleared the MSI and MSI-X flags when disabling the old interrupt
11327          * scheme. We need to re-enabled them here in order to attempt to
11328          * re-acquire the MSI or MSI-X vectors
11329          */
11330         pf->flags |= (I40E_FLAG_MSIX_ENABLED | I40E_FLAG_MSI_ENABLED);
11331
11332         err = i40e_init_interrupt_scheme(pf);
11333         if (err)
11334                 return err;
11335
11336         /* Now that we've re-acquired IRQs, we need to remap the vectors and
11337          * rings together again.
11338          */
11339         for (i = 0; i < pf->num_alloc_vsi; i++) {
11340                 if (pf->vsi[i]) {
11341                         err = i40e_vsi_alloc_q_vectors(pf->vsi[i]);
11342                         if (err)
11343                                 goto err_unwind;
11344                         i40e_vsi_map_rings_to_vectors(pf->vsi[i]);
11345                 }
11346         }
11347
11348         err = i40e_setup_misc_vector(pf);
11349         if (err)
11350                 goto err_unwind;
11351
11352         if (pf->flags & I40E_FLAG_IWARP_ENABLED)
11353                 i40e_client_update_msix_info(pf);
11354
11355         return 0;
11356
11357 err_unwind:
11358         while (i--) {
11359                 if (pf->vsi[i])
11360                         i40e_vsi_free_q_vectors(pf->vsi[i]);
11361         }
11362
11363         return err;
11364 }
11365
11366 /**
11367  * i40e_setup_misc_vector_for_recovery_mode - Setup the misc vector to handle
11368  * non queue events in recovery mode
11369  * @pf: board private structure
11370  *
11371  * This sets up the handler for MSIX 0 or MSI/legacy, which is used to manage
11372  * the non-queue interrupts, e.g. AdminQ and errors in recovery mode.
11373  * This is handled differently than in recovery mode since no Tx/Rx resources
11374  * are being allocated.
11375  **/
11376 static int i40e_setup_misc_vector_for_recovery_mode(struct i40e_pf *pf)
11377 {
11378         int err;
11379
11380         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
11381                 err = i40e_setup_misc_vector(pf);
11382
11383                 if (err) {
11384                         dev_info(&pf->pdev->dev,
11385                                  "MSI-X misc vector request failed, error %d\n",
11386                                  err);
11387                         return err;
11388                 }
11389         } else {
11390                 u32 flags = pf->flags & I40E_FLAG_MSI_ENABLED ? 0 : IRQF_SHARED;
11391
11392                 err = request_irq(pf->pdev->irq, i40e_intr, flags,
11393                                   pf->int_name, pf);
11394
11395                 if (err) {
11396                         dev_info(&pf->pdev->dev,
11397                                  "MSI/legacy misc vector request failed, error %d\n",
11398                                  err);
11399                         return err;
11400                 }
11401                 i40e_enable_misc_int_causes(pf);
11402                 i40e_irq_dynamic_enable_icr0(pf);
11403         }
11404
11405         return 0;
11406 }
11407
11408 /**
11409  * i40e_setup_misc_vector - Setup the misc vector to handle non queue events
11410  * @pf: board private structure
11411  *
11412  * This sets up the handler for MSIX 0, which is used to manage the
11413  * non-queue interrupts, e.g. AdminQ and errors.  This is not used
11414  * when in MSI or Legacy interrupt mode.
11415  **/
11416 static int i40e_setup_misc_vector(struct i40e_pf *pf)
11417 {
11418         struct i40e_hw *hw = &pf->hw;
11419         int err = 0;
11420
11421         /* Only request the IRQ once, the first time through. */
11422         if (!test_and_set_bit(__I40E_MISC_IRQ_REQUESTED, pf->state)) {
11423                 err = request_irq(pf->msix_entries[0].vector,
11424                                   i40e_intr, 0, pf->int_name, pf);
11425                 if (err) {
11426                         clear_bit(__I40E_MISC_IRQ_REQUESTED, pf->state);
11427                         dev_info(&pf->pdev->dev,
11428                                  "request_irq for %s failed: %d\n",
11429                                  pf->int_name, err);
11430                         return -EFAULT;
11431                 }
11432         }
11433
11434         i40e_enable_misc_int_causes(pf);
11435
11436         /* associate no queues to the misc vector */
11437         wr32(hw, I40E_PFINT_LNKLST0, I40E_QUEUE_END_OF_LIST);
11438         wr32(hw, I40E_PFINT_ITR0(I40E_RX_ITR), I40E_ITR_8K >> 1);
11439
11440         i40e_flush(hw);
11441
11442         i40e_irq_dynamic_enable_icr0(pf);
11443
11444         return err;
11445 }
11446
11447 /**
11448  * i40e_get_rss_aq - Get RSS keys and lut by using AQ commands
11449  * @vsi: Pointer to vsi structure
11450  * @seed: Buffter to store the hash keys
11451  * @lut: Buffer to store the lookup table entries
11452  * @lut_size: Size of buffer to store the lookup table entries
11453  *
11454  * Return 0 on success, negative on failure
11455  */
11456 static int i40e_get_rss_aq(struct i40e_vsi *vsi, const u8 *seed,
11457                            u8 *lut, u16 lut_size)
11458 {
11459         struct i40e_pf *pf = vsi->back;
11460         struct i40e_hw *hw = &pf->hw;
11461         int ret = 0;
11462
11463         if (seed) {
11464                 ret = i40e_aq_get_rss_key(hw, vsi->id,
11465                         (struct i40e_aqc_get_set_rss_key_data *)seed);
11466                 if (ret) {
11467                         dev_info(&pf->pdev->dev,
11468                                  "Cannot get RSS key, err %s aq_err %s\n",
11469                                  i40e_stat_str(&pf->hw, ret),
11470                                  i40e_aq_str(&pf->hw,
11471                                              pf->hw.aq.asq_last_status));
11472                         return ret;
11473                 }
11474         }
11475
11476         if (lut) {
11477                 bool pf_lut = vsi->type == I40E_VSI_MAIN;
11478
11479                 ret = i40e_aq_get_rss_lut(hw, vsi->id, pf_lut, lut, lut_size);
11480                 if (ret) {
11481                         dev_info(&pf->pdev->dev,
11482                                  "Cannot get RSS lut, err %s aq_err %s\n",
11483                                  i40e_stat_str(&pf->hw, ret),
11484                                  i40e_aq_str(&pf->hw,
11485                                              pf->hw.aq.asq_last_status));
11486                         return ret;
11487                 }
11488         }
11489
11490         return ret;
11491 }
11492
11493 /**
11494  * i40e_config_rss_reg - Configure RSS keys and lut by writing registers
11495  * @vsi: Pointer to vsi structure
11496  * @seed: RSS hash seed
11497  * @lut: Lookup table
11498  * @lut_size: Lookup table size
11499  *
11500  * Returns 0 on success, negative on failure
11501  **/
11502 static int i40e_config_rss_reg(struct i40e_vsi *vsi, const u8 *seed,
11503                                const u8 *lut, u16 lut_size)
11504 {
11505         struct i40e_pf *pf = vsi->back;
11506         struct i40e_hw *hw = &pf->hw;
11507         u16 vf_id = vsi->vf_id;
11508         u8 i;
11509
11510         /* Fill out hash function seed */
11511         if (seed) {
11512                 u32 *seed_dw = (u32 *)seed;
11513
11514                 if (vsi->type == I40E_VSI_MAIN) {
11515                         for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
11516                                 wr32(hw, I40E_PFQF_HKEY(i), seed_dw[i]);
11517                 } else if (vsi->type == I40E_VSI_SRIOV) {
11518                         for (i = 0; i <= I40E_VFQF_HKEY1_MAX_INDEX; i++)
11519                                 wr32(hw, I40E_VFQF_HKEY1(i, vf_id), seed_dw[i]);
11520                 } else {
11521                         dev_err(&pf->pdev->dev, "Cannot set RSS seed - invalid VSI type\n");
11522                 }
11523         }
11524
11525         if (lut) {
11526                 u32 *lut_dw = (u32 *)lut;
11527
11528                 if (vsi->type == I40E_VSI_MAIN) {
11529                         if (lut_size != I40E_HLUT_ARRAY_SIZE)
11530                                 return -EINVAL;
11531                         for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
11532                                 wr32(hw, I40E_PFQF_HLUT(i), lut_dw[i]);
11533                 } else if (vsi->type == I40E_VSI_SRIOV) {
11534                         if (lut_size != I40E_VF_HLUT_ARRAY_SIZE)
11535                                 return -EINVAL;
11536                         for (i = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++)
11537                                 wr32(hw, I40E_VFQF_HLUT1(i, vf_id), lut_dw[i]);
11538                 } else {
11539                         dev_err(&pf->pdev->dev, "Cannot set RSS LUT - invalid VSI type\n");
11540                 }
11541         }
11542         i40e_flush(hw);
11543
11544         return 0;
11545 }
11546
11547 /**
11548  * i40e_get_rss_reg - Get the RSS keys and lut by reading registers
11549  * @vsi: Pointer to VSI structure
11550  * @seed: Buffer to store the keys
11551  * @lut: Buffer to store the lookup table entries
11552  * @lut_size: Size of buffer to store the lookup table entries
11553  *
11554  * Returns 0 on success, negative on failure
11555  */
11556 static int i40e_get_rss_reg(struct i40e_vsi *vsi, u8 *seed,
11557                             u8 *lut, u16 lut_size)
11558 {
11559         struct i40e_pf *pf = vsi->back;
11560         struct i40e_hw *hw = &pf->hw;
11561         u16 i;
11562
11563         if (seed) {
11564                 u32 *seed_dw = (u32 *)seed;
11565
11566                 for (i = 0; i <= I40E_PFQF_HKEY_MAX_INDEX; i++)
11567                         seed_dw[i] = i40e_read_rx_ctl(hw, I40E_PFQF_HKEY(i));
11568         }
11569         if (lut) {
11570                 u32 *lut_dw = (u32 *)lut;
11571
11572                 if (lut_size != I40E_HLUT_ARRAY_SIZE)
11573                         return -EINVAL;
11574                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
11575                         lut_dw[i] = rd32(hw, I40E_PFQF_HLUT(i));
11576         }
11577
11578         return 0;
11579 }
11580
11581 /**
11582  * i40e_config_rss - Configure RSS keys and lut
11583  * @vsi: Pointer to VSI structure
11584  * @seed: RSS hash seed
11585  * @lut: Lookup table
11586  * @lut_size: Lookup table size
11587  *
11588  * Returns 0 on success, negative on failure
11589  */
11590 int i40e_config_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
11591 {
11592         struct i40e_pf *pf = vsi->back;
11593
11594         if (pf->hw_features & I40E_HW_RSS_AQ_CAPABLE)
11595                 return i40e_config_rss_aq(vsi, seed, lut, lut_size);
11596         else
11597                 return i40e_config_rss_reg(vsi, seed, lut, lut_size);
11598 }
11599
11600 /**
11601  * i40e_get_rss - Get RSS keys and lut
11602  * @vsi: Pointer to VSI structure
11603  * @seed: Buffer to store the keys
11604  * @lut: Buffer to store the lookup table entries
11605  * @lut_size: Size of buffer to store the lookup table entries
11606  *
11607  * Returns 0 on success, negative on failure
11608  */
11609 int i40e_get_rss(struct i40e_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size)
11610 {
11611         struct i40e_pf *pf = vsi->back;
11612
11613         if (pf->hw_features & I40E_HW_RSS_AQ_CAPABLE)
11614                 return i40e_get_rss_aq(vsi, seed, lut, lut_size);
11615         else
11616                 return i40e_get_rss_reg(vsi, seed, lut, lut_size);
11617 }
11618
11619 /**
11620  * i40e_fill_rss_lut - Fill the RSS lookup table with default values
11621  * @pf: Pointer to board private structure
11622  * @lut: Lookup table
11623  * @rss_table_size: Lookup table size
11624  * @rss_size: Range of queue number for hashing
11625  */
11626 void i40e_fill_rss_lut(struct i40e_pf *pf, u8 *lut,
11627                        u16 rss_table_size, u16 rss_size)
11628 {
11629         u16 i;
11630
11631         for (i = 0; i < rss_table_size; i++)
11632                 lut[i] = i % rss_size;
11633 }
11634
11635 /**
11636  * i40e_pf_config_rss - Prepare for RSS if used
11637  * @pf: board private structure
11638  **/
11639 static int i40e_pf_config_rss(struct i40e_pf *pf)
11640 {
11641         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
11642         u8 seed[I40E_HKEY_ARRAY_SIZE];
11643         u8 *lut;
11644         struct i40e_hw *hw = &pf->hw;
11645         u32 reg_val;
11646         u64 hena;
11647         int ret;
11648
11649         /* By default we enable TCP/UDP with IPv4/IPv6 ptypes */
11650         hena = (u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(0)) |
11651                 ((u64)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(1)) << 32);
11652         hena |= i40e_pf_get_default_rss_hena(pf);
11653
11654         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), (u32)hena);
11655         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), (u32)(hena >> 32));
11656
11657         /* Determine the RSS table size based on the hardware capabilities */
11658         reg_val = i40e_read_rx_ctl(hw, I40E_PFQF_CTL_0);
11659         reg_val = (pf->rss_table_size == 512) ?
11660                         (reg_val | I40E_PFQF_CTL_0_HASHLUTSIZE_512) :
11661                         (reg_val & ~I40E_PFQF_CTL_0_HASHLUTSIZE_512);
11662         i40e_write_rx_ctl(hw, I40E_PFQF_CTL_0, reg_val);
11663
11664         /* Determine the RSS size of the VSI */
11665         if (!vsi->rss_size) {
11666                 u16 qcount;
11667                 /* If the firmware does something weird during VSI init, we
11668                  * could end up with zero TCs. Check for that to avoid
11669                  * divide-by-zero. It probably won't pass traffic, but it also
11670                  * won't panic.
11671                  */
11672                 qcount = vsi->num_queue_pairs /
11673                          (vsi->tc_config.numtc ? vsi->tc_config.numtc : 1);
11674                 vsi->rss_size = min_t(int, pf->alloc_rss_size, qcount);
11675         }
11676         if (!vsi->rss_size)
11677                 return -EINVAL;
11678
11679         lut = kzalloc(vsi->rss_table_size, GFP_KERNEL);
11680         if (!lut)
11681                 return -ENOMEM;
11682
11683         /* Use user configured lut if there is one, otherwise use default */
11684         if (vsi->rss_lut_user)
11685                 memcpy(lut, vsi->rss_lut_user, vsi->rss_table_size);
11686         else
11687                 i40e_fill_rss_lut(pf, lut, vsi->rss_table_size, vsi->rss_size);
11688
11689         /* Use user configured hash key if there is one, otherwise
11690          * use default.
11691          */
11692         if (vsi->rss_hkey_user)
11693                 memcpy(seed, vsi->rss_hkey_user, I40E_HKEY_ARRAY_SIZE);
11694         else
11695                 netdev_rss_key_fill((void *)seed, I40E_HKEY_ARRAY_SIZE);
11696         ret = i40e_config_rss(vsi, seed, lut, vsi->rss_table_size);
11697         kfree(lut);
11698
11699         return ret;
11700 }
11701
11702 /**
11703  * i40e_reconfig_rss_queues - change number of queues for rss and rebuild
11704  * @pf: board private structure
11705  * @queue_count: the requested queue count for rss.
11706  *
11707  * returns 0 if rss is not enabled, if enabled returns the final rss queue
11708  * count which may be different from the requested queue count.
11709  * Note: expects to be called while under rtnl_lock()
11710  **/
11711 int i40e_reconfig_rss_queues(struct i40e_pf *pf, int queue_count)
11712 {
11713         struct i40e_vsi *vsi = pf->vsi[pf->lan_vsi];
11714         int new_rss_size;
11715
11716         if (!(pf->flags & I40E_FLAG_RSS_ENABLED))
11717                 return 0;
11718
11719         queue_count = min_t(int, queue_count, num_online_cpus());
11720         new_rss_size = min_t(int, queue_count, pf->rss_size_max);
11721
11722         if (queue_count != vsi->num_queue_pairs) {
11723                 u16 qcount;
11724
11725                 vsi->req_queue_pairs = queue_count;
11726                 i40e_prep_for_reset(pf, true);
11727
11728                 pf->alloc_rss_size = new_rss_size;
11729
11730                 i40e_reset_and_rebuild(pf, true, true);
11731
11732                 /* Discard the user configured hash keys and lut, if less
11733                  * queues are enabled.
11734                  */
11735                 if (queue_count < vsi->rss_size) {
11736                         i40e_clear_rss_config_user(vsi);
11737                         dev_dbg(&pf->pdev->dev,
11738                                 "discard user configured hash keys and lut\n");
11739                 }
11740
11741                 /* Reset vsi->rss_size, as number of enabled queues changed */
11742                 qcount = vsi->num_queue_pairs / vsi->tc_config.numtc;
11743                 vsi->rss_size = min_t(int, pf->alloc_rss_size, qcount);
11744
11745                 i40e_pf_config_rss(pf);
11746         }
11747         dev_info(&pf->pdev->dev, "User requested queue count/HW max RSS count:  %d/%d\n",
11748                  vsi->req_queue_pairs, pf->rss_size_max);
11749         return pf->alloc_rss_size;
11750 }
11751
11752 /**
11753  * i40e_get_partition_bw_setting - Retrieve BW settings for this PF partition
11754  * @pf: board private structure
11755  **/
11756 i40e_status i40e_get_partition_bw_setting(struct i40e_pf *pf)
11757 {
11758         i40e_status status;
11759         bool min_valid, max_valid;
11760         u32 max_bw, min_bw;
11761
11762         status = i40e_read_bw_from_alt_ram(&pf->hw, &max_bw, &min_bw,
11763                                            &min_valid, &max_valid);
11764
11765         if (!status) {
11766                 if (min_valid)
11767                         pf->min_bw = min_bw;
11768                 if (max_valid)
11769                         pf->max_bw = max_bw;
11770         }
11771
11772         return status;
11773 }
11774
11775 /**
11776  * i40e_set_partition_bw_setting - Set BW settings for this PF partition
11777  * @pf: board private structure
11778  **/
11779 i40e_status i40e_set_partition_bw_setting(struct i40e_pf *pf)
11780 {
11781         struct i40e_aqc_configure_partition_bw_data bw_data;
11782         i40e_status status;
11783
11784         /* Set the valid bit for this PF */
11785         bw_data.pf_valid_bits = cpu_to_le16(BIT(pf->hw.pf_id));
11786         bw_data.max_bw[pf->hw.pf_id] = pf->max_bw & I40E_ALT_BW_VALUE_MASK;
11787         bw_data.min_bw[pf->hw.pf_id] = pf->min_bw & I40E_ALT_BW_VALUE_MASK;
11788
11789         /* Set the new bandwidths */
11790         status = i40e_aq_configure_partition_bw(&pf->hw, &bw_data, NULL);
11791
11792         return status;
11793 }
11794
11795 /**
11796  * i40e_commit_partition_bw_setting - Commit BW settings for this PF partition
11797  * @pf: board private structure
11798  **/
11799 i40e_status i40e_commit_partition_bw_setting(struct i40e_pf *pf)
11800 {
11801         /* Commit temporary BW setting to permanent NVM image */
11802         enum i40e_admin_queue_err last_aq_status;
11803         i40e_status ret;
11804         u16 nvm_word;
11805
11806         if (pf->hw.partition_id != 1) {
11807                 dev_info(&pf->pdev->dev,
11808                          "Commit BW only works on partition 1! This is partition %d",
11809                          pf->hw.partition_id);
11810                 ret = I40E_NOT_SUPPORTED;
11811                 goto bw_commit_out;
11812         }
11813
11814         /* Acquire NVM for read access */
11815         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_READ);
11816         last_aq_status = pf->hw.aq.asq_last_status;
11817         if (ret) {
11818                 dev_info(&pf->pdev->dev,
11819                          "Cannot acquire NVM for read access, err %s aq_err %s\n",
11820                          i40e_stat_str(&pf->hw, ret),
11821                          i40e_aq_str(&pf->hw, last_aq_status));
11822                 goto bw_commit_out;
11823         }
11824
11825         /* Read word 0x10 of NVM - SW compatibility word 1 */
11826         ret = i40e_aq_read_nvm(&pf->hw,
11827                                I40E_SR_NVM_CONTROL_WORD,
11828                                0x10, sizeof(nvm_word), &nvm_word,
11829                                false, NULL);
11830         /* Save off last admin queue command status before releasing
11831          * the NVM
11832          */
11833         last_aq_status = pf->hw.aq.asq_last_status;
11834         i40e_release_nvm(&pf->hw);
11835         if (ret) {
11836                 dev_info(&pf->pdev->dev, "NVM read error, err %s aq_err %s\n",
11837                          i40e_stat_str(&pf->hw, ret),
11838                          i40e_aq_str(&pf->hw, last_aq_status));
11839                 goto bw_commit_out;
11840         }
11841
11842         /* Wait a bit for NVM release to complete */
11843         msleep(50);
11844
11845         /* Acquire NVM for write access */
11846         ret = i40e_acquire_nvm(&pf->hw, I40E_RESOURCE_WRITE);
11847         last_aq_status = pf->hw.aq.asq_last_status;
11848         if (ret) {
11849                 dev_info(&pf->pdev->dev,
11850                          "Cannot acquire NVM for write access, err %s aq_err %s\n",
11851                          i40e_stat_str(&pf->hw, ret),
11852                          i40e_aq_str(&pf->hw, last_aq_status));
11853                 goto bw_commit_out;
11854         }
11855         /* Write it back out unchanged to initiate update NVM,
11856          * which will force a write of the shadow (alt) RAM to
11857          * the NVM - thus storing the bandwidth values permanently.
11858          */
11859         ret = i40e_aq_update_nvm(&pf->hw,
11860                                  I40E_SR_NVM_CONTROL_WORD,
11861                                  0x10, sizeof(nvm_word),
11862                                  &nvm_word, true, 0, NULL);
11863         /* Save off last admin queue command status before releasing
11864          * the NVM
11865          */
11866         last_aq_status = pf->hw.aq.asq_last_status;
11867         i40e_release_nvm(&pf->hw);
11868         if (ret)
11869                 dev_info(&pf->pdev->dev,
11870                          "BW settings NOT SAVED, err %s aq_err %s\n",
11871                          i40e_stat_str(&pf->hw, ret),
11872                          i40e_aq_str(&pf->hw, last_aq_status));
11873 bw_commit_out:
11874
11875         return ret;
11876 }
11877
11878 /**
11879  * i40e_is_total_port_shutdown_enabled - read NVM and return value
11880  * if total port shutdown feature is enabled for this PF
11881  * @pf: board private structure
11882  **/
11883 static bool i40e_is_total_port_shutdown_enabled(struct i40e_pf *pf)
11884 {
11885 #define I40E_TOTAL_PORT_SHUTDOWN_ENABLED        BIT(4)
11886 #define I40E_FEATURES_ENABLE_PTR                0x2A
11887 #define I40E_CURRENT_SETTING_PTR                0x2B
11888 #define I40E_LINK_BEHAVIOR_WORD_OFFSET          0x2D
11889 #define I40E_LINK_BEHAVIOR_WORD_LENGTH          0x1
11890 #define I40E_LINK_BEHAVIOR_OS_FORCED_ENABLED    BIT(0)
11891 #define I40E_LINK_BEHAVIOR_PORT_BIT_LENGTH      4
11892         i40e_status read_status = I40E_SUCCESS;
11893         u16 sr_emp_sr_settings_ptr = 0;
11894         u16 features_enable = 0;
11895         u16 link_behavior = 0;
11896         bool ret = false;
11897
11898         read_status = i40e_read_nvm_word(&pf->hw,
11899                                          I40E_SR_EMP_SR_SETTINGS_PTR,
11900                                          &sr_emp_sr_settings_ptr);
11901         if (read_status)
11902                 goto err_nvm;
11903         read_status = i40e_read_nvm_word(&pf->hw,
11904                                          sr_emp_sr_settings_ptr +
11905                                          I40E_FEATURES_ENABLE_PTR,
11906                                          &features_enable);
11907         if (read_status)
11908                 goto err_nvm;
11909         if (I40E_TOTAL_PORT_SHUTDOWN_ENABLED & features_enable) {
11910                 read_status = i40e_read_nvm_module_data(&pf->hw,
11911                                                         I40E_SR_EMP_SR_SETTINGS_PTR,
11912                                                         I40E_CURRENT_SETTING_PTR,
11913                                                         I40E_LINK_BEHAVIOR_WORD_OFFSET,
11914                                                         I40E_LINK_BEHAVIOR_WORD_LENGTH,
11915                                                         &link_behavior);
11916                 if (read_status)
11917                         goto err_nvm;
11918                 link_behavior >>= (pf->hw.port * I40E_LINK_BEHAVIOR_PORT_BIT_LENGTH);
11919                 ret = I40E_LINK_BEHAVIOR_OS_FORCED_ENABLED & link_behavior;
11920         }
11921         return ret;
11922
11923 err_nvm:
11924         dev_warn(&pf->pdev->dev,
11925                  "total-port-shutdown feature is off due to read nvm error: %s\n",
11926                  i40e_stat_str(&pf->hw, read_status));
11927         return ret;
11928 }
11929
11930 /**
11931  * i40e_sw_init - Initialize general software structures (struct i40e_pf)
11932  * @pf: board private structure to initialize
11933  *
11934  * i40e_sw_init initializes the Adapter private data structure.
11935  * Fields are initialized based on PCI device information and
11936  * OS network device settings (MTU size).
11937  **/
11938 static int i40e_sw_init(struct i40e_pf *pf)
11939 {
11940         int err = 0;
11941         int size;
11942
11943         /* Set default capability flags */
11944         pf->flags = I40E_FLAG_RX_CSUM_ENABLED |
11945                     I40E_FLAG_MSI_ENABLED     |
11946                     I40E_FLAG_MSIX_ENABLED;
11947
11948         /* Set default ITR */
11949         pf->rx_itr_default = I40E_ITR_RX_DEF;
11950         pf->tx_itr_default = I40E_ITR_TX_DEF;
11951
11952         /* Depending on PF configurations, it is possible that the RSS
11953          * maximum might end up larger than the available queues
11954          */
11955         pf->rss_size_max = BIT(pf->hw.func_caps.rss_table_entry_width);
11956         pf->alloc_rss_size = 1;
11957         pf->rss_table_size = pf->hw.func_caps.rss_table_size;
11958         pf->rss_size_max = min_t(int, pf->rss_size_max,
11959                                  pf->hw.func_caps.num_tx_qp);
11960         if (pf->hw.func_caps.rss) {
11961                 pf->flags |= I40E_FLAG_RSS_ENABLED;
11962                 pf->alloc_rss_size = min_t(int, pf->rss_size_max,
11963                                            num_online_cpus());
11964         }
11965
11966         /* MFP mode enabled */
11967         if (pf->hw.func_caps.npar_enable || pf->hw.func_caps.flex10_enable) {
11968                 pf->flags |= I40E_FLAG_MFP_ENABLED;
11969                 dev_info(&pf->pdev->dev, "MFP mode Enabled\n");
11970                 if (i40e_get_partition_bw_setting(pf)) {
11971                         dev_warn(&pf->pdev->dev,
11972                                  "Could not get partition bw settings\n");
11973                 } else {
11974                         dev_info(&pf->pdev->dev,
11975                                  "Partition BW Min = %8.8x, Max = %8.8x\n",
11976                                  pf->min_bw, pf->max_bw);
11977
11978                         /* nudge the Tx scheduler */
11979                         i40e_set_partition_bw_setting(pf);
11980                 }
11981         }
11982
11983         if ((pf->hw.func_caps.fd_filters_guaranteed > 0) ||
11984             (pf->hw.func_caps.fd_filters_best_effort > 0)) {
11985                 pf->flags |= I40E_FLAG_FD_ATR_ENABLED;
11986                 pf->atr_sample_rate = I40E_DEFAULT_ATR_SAMPLE_RATE;
11987                 if (pf->flags & I40E_FLAG_MFP_ENABLED &&
11988                     pf->hw.num_partitions > 1)
11989                         dev_info(&pf->pdev->dev,
11990                                  "Flow Director Sideband mode Disabled in MFP mode\n");
11991                 else
11992                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
11993                 pf->fdir_pf_filter_count =
11994                                  pf->hw.func_caps.fd_filters_guaranteed;
11995                 pf->hw.fdir_shared_filter_count =
11996                                  pf->hw.func_caps.fd_filters_best_effort;
11997         }
11998
11999         if (pf->hw.mac.type == I40E_MAC_X722) {
12000                 pf->hw_features |= (I40E_HW_RSS_AQ_CAPABLE |
12001                                     I40E_HW_128_QP_RSS_CAPABLE |
12002                                     I40E_HW_ATR_EVICT_CAPABLE |
12003                                     I40E_HW_WB_ON_ITR_CAPABLE |
12004                                     I40E_HW_MULTIPLE_TCP_UDP_RSS_PCTYPE |
12005                                     I40E_HW_NO_PCI_LINK_CHECK |
12006                                     I40E_HW_USE_SET_LLDP_MIB |
12007                                     I40E_HW_GENEVE_OFFLOAD_CAPABLE |
12008                                     I40E_HW_PTP_L4_CAPABLE |
12009                                     I40E_HW_WOL_MC_MAGIC_PKT_WAKE |
12010                                     I40E_HW_OUTER_UDP_CSUM_CAPABLE);
12011
12012 #define I40E_FDEVICT_PCTYPE_DEFAULT 0xc03
12013                 if (rd32(&pf->hw, I40E_GLQF_FDEVICTENA(1)) !=
12014                     I40E_FDEVICT_PCTYPE_DEFAULT) {
12015                         dev_warn(&pf->pdev->dev,
12016                                  "FD EVICT PCTYPES are not right, disable FD HW EVICT\n");
12017                         pf->hw_features &= ~I40E_HW_ATR_EVICT_CAPABLE;
12018                 }
12019         } else if ((pf->hw.aq.api_maj_ver > 1) ||
12020                    ((pf->hw.aq.api_maj_ver == 1) &&
12021                     (pf->hw.aq.api_min_ver > 4))) {
12022                 /* Supported in FW API version higher than 1.4 */
12023                 pf->hw_features |= I40E_HW_GENEVE_OFFLOAD_CAPABLE;
12024         }
12025
12026         /* Enable HW ATR eviction if possible */
12027         if (pf->hw_features & I40E_HW_ATR_EVICT_CAPABLE)
12028                 pf->flags |= I40E_FLAG_HW_ATR_EVICT_ENABLED;
12029
12030         if ((pf->hw.mac.type == I40E_MAC_XL710) &&
12031             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 33)) ||
12032             (pf->hw.aq.fw_maj_ver < 4))) {
12033                 pf->hw_features |= I40E_HW_RESTART_AUTONEG;
12034                 /* No DCB support  for FW < v4.33 */
12035                 pf->hw_features |= I40E_HW_NO_DCB_SUPPORT;
12036         }
12037
12038         /* Disable FW LLDP if FW < v4.3 */
12039         if ((pf->hw.mac.type == I40E_MAC_XL710) &&
12040             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver < 3)) ||
12041             (pf->hw.aq.fw_maj_ver < 4)))
12042                 pf->hw_features |= I40E_HW_STOP_FW_LLDP;
12043
12044         /* Use the FW Set LLDP MIB API if FW > v4.40 */
12045         if ((pf->hw.mac.type == I40E_MAC_XL710) &&
12046             (((pf->hw.aq.fw_maj_ver == 4) && (pf->hw.aq.fw_min_ver >= 40)) ||
12047             (pf->hw.aq.fw_maj_ver >= 5)))
12048                 pf->hw_features |= I40E_HW_USE_SET_LLDP_MIB;
12049
12050         /* Enable PTP L4 if FW > v6.0 */
12051         if (pf->hw.mac.type == I40E_MAC_XL710 &&
12052             pf->hw.aq.fw_maj_ver >= 6)
12053                 pf->hw_features |= I40E_HW_PTP_L4_CAPABLE;
12054
12055         if (pf->hw.func_caps.vmdq && num_online_cpus() != 1) {
12056                 pf->num_vmdq_vsis = I40E_DEFAULT_NUM_VMDQ_VSI;
12057                 pf->flags |= I40E_FLAG_VMDQ_ENABLED;
12058                 pf->num_vmdq_qps = i40e_default_queues_per_vmdq(pf);
12059         }
12060
12061         if (pf->hw.func_caps.iwarp && num_online_cpus() != 1) {
12062                 pf->flags |= I40E_FLAG_IWARP_ENABLED;
12063                 /* IWARP needs one extra vector for CQP just like MISC.*/
12064                 pf->num_iwarp_msix = (int)num_online_cpus() + 1;
12065         }
12066         /* Stopping FW LLDP engine is supported on XL710 and X722
12067          * starting from FW versions determined in i40e_init_adminq.
12068          * Stopping the FW LLDP engine is not supported on XL710
12069          * if NPAR is functioning so unset this hw flag in this case.
12070          */
12071         if (pf->hw.mac.type == I40E_MAC_XL710 &&
12072             pf->hw.func_caps.npar_enable &&
12073             (pf->hw.flags & I40E_HW_FLAG_FW_LLDP_STOPPABLE))
12074                 pf->hw.flags &= ~I40E_HW_FLAG_FW_LLDP_STOPPABLE;
12075
12076 #ifdef CONFIG_PCI_IOV
12077         if (pf->hw.func_caps.num_vfs && pf->hw.partition_id == 1) {
12078                 pf->num_vf_qps = I40E_DEFAULT_QUEUES_PER_VF;
12079                 pf->flags |= I40E_FLAG_SRIOV_ENABLED;
12080                 pf->num_req_vfs = min_t(int,
12081                                         pf->hw.func_caps.num_vfs,
12082                                         I40E_MAX_VF_COUNT);
12083         }
12084 #endif /* CONFIG_PCI_IOV */
12085         pf->eeprom_version = 0xDEAD;
12086         pf->lan_veb = I40E_NO_VEB;
12087         pf->lan_vsi = I40E_NO_VSI;
12088
12089         /* By default FW has this off for performance reasons */
12090         pf->flags &= ~I40E_FLAG_VEB_STATS_ENABLED;
12091
12092         /* set up queue assignment tracking */
12093         size = sizeof(struct i40e_lump_tracking)
12094                 + (sizeof(u16) * pf->hw.func_caps.num_tx_qp);
12095         pf->qp_pile = kzalloc(size, GFP_KERNEL);
12096         if (!pf->qp_pile) {
12097                 err = -ENOMEM;
12098                 goto sw_init_done;
12099         }
12100         pf->qp_pile->num_entries = pf->hw.func_caps.num_tx_qp;
12101         pf->qp_pile->search_hint = 0;
12102
12103         pf->tx_timeout_recovery_level = 1;
12104
12105         if (pf->hw.mac.type != I40E_MAC_X722 &&
12106             i40e_is_total_port_shutdown_enabled(pf)) {
12107                 /* Link down on close must be on when total port shutdown
12108                  * is enabled for a given port
12109                  */
12110                 pf->flags |= (I40E_FLAG_TOTAL_PORT_SHUTDOWN_ENABLED |
12111                               I40E_FLAG_LINK_DOWN_ON_CLOSE_ENABLED);
12112                 dev_info(&pf->pdev->dev,
12113                          "total-port-shutdown was enabled, link-down-on-close is forced on\n");
12114         }
12115         mutex_init(&pf->switch_mutex);
12116
12117 sw_init_done:
12118         return err;
12119 }
12120
12121 /**
12122  * i40e_set_ntuple - set the ntuple feature flag and take action
12123  * @pf: board private structure to initialize
12124  * @features: the feature set that the stack is suggesting
12125  *
12126  * returns a bool to indicate if reset needs to happen
12127  **/
12128 bool i40e_set_ntuple(struct i40e_pf *pf, netdev_features_t features)
12129 {
12130         bool need_reset = false;
12131
12132         /* Check if Flow Director n-tuple support was enabled or disabled.  If
12133          * the state changed, we need to reset.
12134          */
12135         if (features & NETIF_F_NTUPLE) {
12136                 /* Enable filters and mark for reset */
12137                 if (!(pf->flags & I40E_FLAG_FD_SB_ENABLED))
12138                         need_reset = true;
12139                 /* enable FD_SB only if there is MSI-X vector and no cloud
12140                  * filters exist
12141                  */
12142                 if (pf->num_fdsb_msix > 0 && !pf->num_cloud_filters) {
12143                         pf->flags |= I40E_FLAG_FD_SB_ENABLED;
12144                         pf->flags &= ~I40E_FLAG_FD_SB_INACTIVE;
12145                 }
12146         } else {
12147                 /* turn off filters, mark for reset and clear SW filter list */
12148                 if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
12149                         need_reset = true;
12150                         i40e_fdir_filter_exit(pf);
12151                 }
12152                 pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
12153                 clear_bit(__I40E_FD_SB_AUTO_DISABLED, pf->state);
12154                 pf->flags |= I40E_FLAG_FD_SB_INACTIVE;
12155
12156                 /* reset fd counters */
12157                 pf->fd_add_err = 0;
12158                 pf->fd_atr_cnt = 0;
12159                 /* if ATR was auto disabled it can be re-enabled. */
12160                 if (test_and_clear_bit(__I40E_FD_ATR_AUTO_DISABLED, pf->state))
12161                         if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) &&
12162                             (I40E_DEBUG_FD & pf->hw.debug_mask))
12163                                 dev_info(&pf->pdev->dev, "ATR re-enabled.\n");
12164         }
12165         return need_reset;
12166 }
12167
12168 /**
12169  * i40e_clear_rss_lut - clear the rx hash lookup table
12170  * @vsi: the VSI being configured
12171  **/
12172 static void i40e_clear_rss_lut(struct i40e_vsi *vsi)
12173 {
12174         struct i40e_pf *pf = vsi->back;
12175         struct i40e_hw *hw = &pf->hw;
12176         u16 vf_id = vsi->vf_id;
12177         u8 i;
12178
12179         if (vsi->type == I40E_VSI_MAIN) {
12180                 for (i = 0; i <= I40E_PFQF_HLUT_MAX_INDEX; i++)
12181                         wr32(hw, I40E_PFQF_HLUT(i), 0);
12182         } else if (vsi->type == I40E_VSI_SRIOV) {
12183                 for (i = 0; i <= I40E_VFQF_HLUT_MAX_INDEX; i++)
12184                         i40e_write_rx_ctl(hw, I40E_VFQF_HLUT1(i, vf_id), 0);
12185         } else {
12186                 dev_err(&pf->pdev->dev, "Cannot set RSS LUT - invalid VSI type\n");
12187         }
12188 }
12189
12190 /**
12191  * i40e_set_features - set the netdev feature flags
12192  * @netdev: ptr to the netdev being adjusted
12193  * @features: the feature set that the stack is suggesting
12194  * Note: expects to be called while under rtnl_lock()
12195  **/
12196 static int i40e_set_features(struct net_device *netdev,
12197                              netdev_features_t features)
12198 {
12199         struct i40e_netdev_priv *np = netdev_priv(netdev);
12200         struct i40e_vsi *vsi = np->vsi;
12201         struct i40e_pf *pf = vsi->back;
12202         bool need_reset;
12203
12204         if (features & NETIF_F_RXHASH && !(netdev->features & NETIF_F_RXHASH))
12205                 i40e_pf_config_rss(pf);
12206         else if (!(features & NETIF_F_RXHASH) &&
12207                  netdev->features & NETIF_F_RXHASH)
12208                 i40e_clear_rss_lut(vsi);
12209
12210         if (features & NETIF_F_HW_VLAN_CTAG_RX)
12211                 i40e_vlan_stripping_enable(vsi);
12212         else
12213                 i40e_vlan_stripping_disable(vsi);
12214
12215         if (!(features & NETIF_F_HW_TC) && pf->num_cloud_filters) {
12216                 dev_err(&pf->pdev->dev,
12217                         "Offloaded tc filters active, can't turn hw_tc_offload off");
12218                 return -EINVAL;
12219         }
12220
12221         if (!(features & NETIF_F_HW_L2FW_DOFFLOAD) && vsi->macvlan_cnt)
12222                 i40e_del_all_macvlans(vsi);
12223
12224         need_reset = i40e_set_ntuple(pf, features);
12225
12226         if (need_reset)
12227                 i40e_do_reset(pf, I40E_PF_RESET_FLAG, true);
12228
12229         return 0;
12230 }
12231
12232 /**
12233  * i40e_get_udp_port_idx - Lookup a possibly offloaded for Rx UDP port
12234  * @pf: board private structure
12235  * @port: The UDP port to look up
12236  *
12237  * Returns the index number or I40E_MAX_PF_UDP_OFFLOAD_PORTS if port not found
12238  **/
12239 static u8 i40e_get_udp_port_idx(struct i40e_pf *pf, u16 port)
12240 {
12241         u8 i;
12242
12243         for (i = 0; i < I40E_MAX_PF_UDP_OFFLOAD_PORTS; i++) {
12244                 /* Do not report ports with pending deletions as
12245                  * being available.
12246                  */
12247                 if (!port && (pf->pending_udp_bitmap & BIT_ULL(i)))
12248                         continue;
12249                 if (pf->udp_ports[i].port == port)
12250                         return i;
12251         }
12252
12253         return i;
12254 }
12255
12256 /**
12257  * i40e_udp_tunnel_add - Get notifications about UDP tunnel ports that come up
12258  * @netdev: This physical port's netdev
12259  * @ti: Tunnel endpoint information
12260  **/
12261 static void i40e_udp_tunnel_add(struct net_device *netdev,
12262                                 struct udp_tunnel_info *ti)
12263 {
12264         struct i40e_netdev_priv *np = netdev_priv(netdev);
12265         struct i40e_vsi *vsi = np->vsi;
12266         struct i40e_pf *pf = vsi->back;
12267         u16 port = ntohs(ti->port);
12268         u8 next_idx;
12269         u8 idx;
12270
12271         idx = i40e_get_udp_port_idx(pf, port);
12272
12273         /* Check if port already exists */
12274         if (idx < I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
12275                 netdev_info(netdev, "port %d already offloaded\n", port);
12276                 return;
12277         }
12278
12279         /* Now check if there is space to add the new port */
12280         next_idx = i40e_get_udp_port_idx(pf, 0);
12281
12282         if (next_idx == I40E_MAX_PF_UDP_OFFLOAD_PORTS) {
12283                 netdev_info(netdev, "maximum number of offloaded UDP ports reached, not adding port %d\n",
12284                             port);
12285                 return;
12286         }
12287
12288         switch (ti->type) {
12289         case UDP_TUNNEL_TYPE_VXLAN:
12290                 pf->udp_ports[next_idx].type = I40E_AQC_TUNNEL_TYPE_VXLAN;
12291                 break;
12292         case UDP_TUNNEL_TYPE_GENEVE:
12293                 if (!(pf->hw_features & I40E_HW_GENEVE_OFFLOAD_CAPABLE))
12294                         return;
12295                 pf->udp_ports[next_idx].type = I40E_AQC_TUNNEL_TYPE_NGE;
12296                 break;
12297         default:
12298                 return;
12299         }
12300
12301         /* New port: add it and mark its index in the bitmap */
12302         pf->udp_ports[next_idx].port = port;
12303         pf->udp_ports[next_idx].filter_index = I40E_UDP_PORT_INDEX_UNUSED;
12304         pf->pending_udp_bitmap |= BIT_ULL(next_idx);
12305         set_bit(__I40E_UDP_FILTER_SYNC_PENDING, pf->state);
12306 }
12307
12308 /**
12309  * i40e_udp_tunnel_del - Get notifications about UDP tunnel ports that go away
12310  * @netdev: This physical port's netdev
12311  * @ti: Tunnel endpoint information
12312  **/
12313 static void i40e_udp_tunnel_del(struct net_device *netdev,
12314                                 struct udp_tunnel_info *ti)
12315 {
12316         struct i40e_netdev_priv *np = netdev_priv(netdev);
12317         struct i40e_vsi *vsi = np->vsi;
12318         struct i40e_pf *pf = vsi->back;
12319         u16 port = ntohs(ti->port);
12320         u8 idx;
12321
12322         idx = i40e_get_udp_port_idx(pf, port);
12323
12324         /* Check if port already exists */
12325         if (idx >= I40E_MAX_PF_UDP_OFFLOAD_PORTS)
12326                 goto not_found;
12327
12328         switch (ti->type) {
12329         case UDP_TUNNEL_TYPE_VXLAN:
12330                 if (pf->udp_ports[idx].type != I40E_AQC_TUNNEL_TYPE_VXLAN)
12331                         goto not_found;
12332                 break;
12333         case UDP_TUNNEL_TYPE_GENEVE:
12334                 if (pf->udp_ports[idx].type != I40E_AQC_TUNNEL_TYPE_NGE)
12335                         goto not_found;
12336                 break;
12337         default:
12338                 goto not_found;
12339         }
12340
12341         /* if port exists, set it to 0 (mark for deletion)
12342          * and make it pending
12343          */
12344         pf->udp_ports[idx].port = 0;
12345
12346         /* Toggle pending bit instead of setting it. This way if we are
12347          * deleting a port that has yet to be added we just clear the pending
12348          * bit and don't have to worry about it.
12349          */
12350         pf->pending_udp_bitmap ^= BIT_ULL(idx);
12351         set_bit(__I40E_UDP_FILTER_SYNC_PENDING, pf->state);
12352
12353         return;
12354 not_found:
12355         netdev_warn(netdev, "UDP port %d was not found, not deleting\n",
12356                     port);
12357 }
12358
12359 static int i40e_get_phys_port_id(struct net_device *netdev,
12360                                  struct netdev_phys_item_id *ppid)
12361 {
12362         struct i40e_netdev_priv *np = netdev_priv(netdev);
12363         struct i40e_pf *pf = np->vsi->back;
12364         struct i40e_hw *hw = &pf->hw;
12365
12366         if (!(pf->hw_features & I40E_HW_PORT_ID_VALID))
12367                 return -EOPNOTSUPP;
12368
12369         ppid->id_len = min_t(int, sizeof(hw->mac.port_addr), sizeof(ppid->id));
12370         memcpy(ppid->id, hw->mac.port_addr, ppid->id_len);
12371
12372         return 0;
12373 }
12374
12375 /**
12376  * i40e_ndo_fdb_add - add an entry to the hardware database
12377  * @ndm: the input from the stack
12378  * @tb: pointer to array of nladdr (unused)
12379  * @dev: the net device pointer
12380  * @addr: the MAC address entry being added
12381  * @vid: VLAN ID
12382  * @flags: instructions from stack about fdb operation
12383  */
12384 static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
12385                             struct net_device *dev,
12386                             const unsigned char *addr, u16 vid,
12387                             u16 flags,
12388                             struct netlink_ext_ack *extack)
12389 {
12390         struct i40e_netdev_priv *np = netdev_priv(dev);
12391         struct i40e_pf *pf = np->vsi->back;
12392         int err = 0;
12393
12394         if (!(pf->flags & I40E_FLAG_SRIOV_ENABLED))
12395                 return -EOPNOTSUPP;
12396
12397         if (vid) {
12398                 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
12399                 return -EINVAL;
12400         }
12401
12402         /* Hardware does not support aging addresses so if a
12403          * ndm_state is given only allow permanent addresses
12404          */
12405         if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
12406                 netdev_info(dev, "FDB only supports static addresses\n");
12407                 return -EINVAL;
12408         }
12409
12410         if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
12411                 err = dev_uc_add_excl(dev, addr);
12412         else if (is_multicast_ether_addr(addr))
12413                 err = dev_mc_add_excl(dev, addr);
12414         else
12415                 err = -EINVAL;
12416
12417         /* Only return duplicate errors if NLM_F_EXCL is set */
12418         if (err == -EEXIST && !(flags & NLM_F_EXCL))
12419                 err = 0;
12420
12421         return err;
12422 }
12423
12424 /**
12425  * i40e_ndo_bridge_setlink - Set the hardware bridge mode
12426  * @dev: the netdev being configured
12427  * @nlh: RTNL message
12428  * @flags: bridge flags
12429  * @extack: netlink extended ack
12430  *
12431  * Inserts a new hardware bridge if not already created and
12432  * enables the bridging mode requested (VEB or VEPA). If the
12433  * hardware bridge has already been inserted and the request
12434  * is to change the mode then that requires a PF reset to
12435  * allow rebuild of the components with required hardware
12436  * bridge mode enabled.
12437  *
12438  * Note: expects to be called while under rtnl_lock()
12439  **/
12440 static int i40e_ndo_bridge_setlink(struct net_device *dev,
12441                                    struct nlmsghdr *nlh,
12442                                    u16 flags,
12443                                    struct netlink_ext_ack *extack)
12444 {
12445         struct i40e_netdev_priv *np = netdev_priv(dev);
12446         struct i40e_vsi *vsi = np->vsi;
12447         struct i40e_pf *pf = vsi->back;
12448         struct i40e_veb *veb = NULL;
12449         struct nlattr *attr, *br_spec;
12450         int i, rem;
12451
12452         /* Only for PF VSI for now */
12453         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
12454                 return -EOPNOTSUPP;
12455
12456         /* Find the HW bridge for PF VSI */
12457         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
12458                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
12459                         veb = pf->veb[i];
12460         }
12461
12462         br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
12463
12464         nla_for_each_nested(attr, br_spec, rem) {
12465                 __u16 mode;
12466
12467                 if (nla_type(attr) != IFLA_BRIDGE_MODE)
12468                         continue;
12469
12470                 mode = nla_get_u16(attr);
12471                 if ((mode != BRIDGE_MODE_VEPA) &&
12472                     (mode != BRIDGE_MODE_VEB))
12473                         return -EINVAL;
12474
12475                 /* Insert a new HW bridge */
12476                 if (!veb) {
12477                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
12478                                              vsi->tc_config.enabled_tc);
12479                         if (veb) {
12480                                 veb->bridge_mode = mode;
12481                                 i40e_config_bridge_mode(veb);
12482                         } else {
12483                                 /* No Bridge HW offload available */
12484                                 return -ENOENT;
12485                         }
12486                         break;
12487                 } else if (mode != veb->bridge_mode) {
12488                         /* Existing HW bridge but different mode needs reset */
12489                         veb->bridge_mode = mode;
12490                         /* TODO: If no VFs or VMDq VSIs, disallow VEB mode */
12491                         if (mode == BRIDGE_MODE_VEB)
12492                                 pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
12493                         else
12494                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
12495                         i40e_do_reset(pf, I40E_PF_RESET_FLAG, true);
12496                         break;
12497                 }
12498         }
12499
12500         return 0;
12501 }
12502
12503 /**
12504  * i40e_ndo_bridge_getlink - Get the hardware bridge mode
12505  * @skb: skb buff
12506  * @pid: process id
12507  * @seq: RTNL message seq #
12508  * @dev: the netdev being configured
12509  * @filter_mask: unused
12510  * @nlflags: netlink flags passed in
12511  *
12512  * Return the mode in which the hardware bridge is operating in
12513  * i.e VEB or VEPA.
12514  **/
12515 static int i40e_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
12516                                    struct net_device *dev,
12517                                    u32 __always_unused filter_mask,
12518                                    int nlflags)
12519 {
12520         struct i40e_netdev_priv *np = netdev_priv(dev);
12521         struct i40e_vsi *vsi = np->vsi;
12522         struct i40e_pf *pf = vsi->back;
12523         struct i40e_veb *veb = NULL;
12524         int i;
12525
12526         /* Only for PF VSI for now */
12527         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid)
12528                 return -EOPNOTSUPP;
12529
12530         /* Find the HW bridge for the PF VSI */
12531         for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
12532                 if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
12533                         veb = pf->veb[i];
12534         }
12535
12536         if (!veb)
12537                 return 0;
12538
12539         return ndo_dflt_bridge_getlink(skb, pid, seq, dev, veb->bridge_mode,
12540                                        0, 0, nlflags, filter_mask, NULL);
12541 }
12542
12543 /**
12544  * i40e_features_check - Validate encapsulated packet conforms to limits
12545  * @skb: skb buff
12546  * @dev: This physical port's netdev
12547  * @features: Offload features that the stack believes apply
12548  **/
12549 static netdev_features_t i40e_features_check(struct sk_buff *skb,
12550                                              struct net_device *dev,
12551                                              netdev_features_t features)
12552 {
12553         size_t len;
12554
12555         /* No point in doing any of this if neither checksum nor GSO are
12556          * being requested for this frame.  We can rule out both by just
12557          * checking for CHECKSUM_PARTIAL
12558          */
12559         if (skb->ip_summed != CHECKSUM_PARTIAL)
12560                 return features;
12561
12562         /* We cannot support GSO if the MSS is going to be less than
12563          * 64 bytes.  If it is then we need to drop support for GSO.
12564          */
12565         if (skb_is_gso(skb) && (skb_shinfo(skb)->gso_size < 64))
12566                 features &= ~NETIF_F_GSO_MASK;
12567
12568         /* MACLEN can support at most 63 words */
12569         len = skb_network_header(skb) - skb->data;
12570         if (len & ~(63 * 2))
12571                 goto out_err;
12572
12573         /* IPLEN and EIPLEN can support at most 127 dwords */
12574         len = skb_transport_header(skb) - skb_network_header(skb);
12575         if (len & ~(127 * 4))
12576                 goto out_err;
12577
12578         if (skb->encapsulation) {
12579                 /* L4TUNLEN can support 127 words */
12580                 len = skb_inner_network_header(skb) - skb_transport_header(skb);
12581                 if (len & ~(127 * 2))
12582                         goto out_err;
12583
12584                 /* IPLEN can support at most 127 dwords */
12585                 len = skb_inner_transport_header(skb) -
12586                       skb_inner_network_header(skb);
12587                 if (len & ~(127 * 4))
12588                         goto out_err;
12589         }
12590
12591         /* No need to validate L4LEN as TCP is the only protocol with a
12592          * a flexible value and we support all possible values supported
12593          * by TCP, which is at most 15 dwords
12594          */
12595
12596         return features;
12597 out_err:
12598         return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
12599 }
12600
12601 /**
12602  * i40e_xdp_setup - add/remove an XDP program
12603  * @vsi: VSI to changed
12604  * @prog: XDP program
12605  **/
12606 static int i40e_xdp_setup(struct i40e_vsi *vsi,
12607                           struct bpf_prog *prog)
12608 {
12609         int frame_size = vsi->netdev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN;
12610         struct i40e_pf *pf = vsi->back;
12611         struct bpf_prog *old_prog;
12612         bool need_reset;
12613         int i;
12614
12615         /* Don't allow frames that span over multiple buffers */
12616         if (frame_size > vsi->rx_buf_len)
12617                 return -EINVAL;
12618
12619         if (!i40e_enabled_xdp_vsi(vsi) && !prog)
12620                 return 0;
12621
12622         /* When turning XDP on->off/off->on we reset and rebuild the rings. */
12623         need_reset = (i40e_enabled_xdp_vsi(vsi) != !!prog);
12624
12625         if (need_reset)
12626                 i40e_prep_for_reset(pf, true);
12627
12628         old_prog = xchg(&vsi->xdp_prog, prog);
12629
12630         if (need_reset) {
12631                 if (!prog)
12632                         /* Wait until ndo_xsk_wakeup completes. */
12633                         synchronize_rcu();
12634                 i40e_reset_and_rebuild(pf, true, true);
12635         }
12636
12637         for (i = 0; i < vsi->num_queue_pairs; i++)
12638                 WRITE_ONCE(vsi->rx_rings[i]->xdp_prog, vsi->xdp_prog);
12639
12640         if (old_prog)
12641                 bpf_prog_put(old_prog);
12642
12643         /* Kick start the NAPI context if there is an AF_XDP socket open
12644          * on that queue id. This so that receiving will start.
12645          */
12646         if (need_reset && prog)
12647                 for (i = 0; i < vsi->num_queue_pairs; i++)
12648                         if (vsi->xdp_rings[i]->xsk_pool)
12649                                 (void)i40e_xsk_wakeup(vsi->netdev, i,
12650                                                       XDP_WAKEUP_RX);
12651
12652         return 0;
12653 }
12654
12655 /**
12656  * i40e_enter_busy_conf - Enters busy config state
12657  * @vsi: vsi
12658  *
12659  * Returns 0 on success, <0 for failure.
12660  **/
12661 static int i40e_enter_busy_conf(struct i40e_vsi *vsi)
12662 {
12663         struct i40e_pf *pf = vsi->back;
12664         int timeout = 50;
12665
12666         while (test_and_set_bit(__I40E_CONFIG_BUSY, pf->state)) {
12667                 timeout--;
12668                 if (!timeout)
12669                         return -EBUSY;
12670                 usleep_range(1000, 2000);
12671         }
12672
12673         return 0;
12674 }
12675
12676 /**
12677  * i40e_exit_busy_conf - Exits busy config state
12678  * @vsi: vsi
12679  **/
12680 static void i40e_exit_busy_conf(struct i40e_vsi *vsi)
12681 {
12682         struct i40e_pf *pf = vsi->back;
12683
12684         clear_bit(__I40E_CONFIG_BUSY, pf->state);
12685 }
12686
12687 /**
12688  * i40e_queue_pair_reset_stats - Resets all statistics for a queue pair
12689  * @vsi: vsi
12690  * @queue_pair: queue pair
12691  **/
12692 static void i40e_queue_pair_reset_stats(struct i40e_vsi *vsi, int queue_pair)
12693 {
12694         memset(&vsi->rx_rings[queue_pair]->rx_stats, 0,
12695                sizeof(vsi->rx_rings[queue_pair]->rx_stats));
12696         memset(&vsi->tx_rings[queue_pair]->stats, 0,
12697                sizeof(vsi->tx_rings[queue_pair]->stats));
12698         if (i40e_enabled_xdp_vsi(vsi)) {
12699                 memset(&vsi->xdp_rings[queue_pair]->stats, 0,
12700                        sizeof(vsi->xdp_rings[queue_pair]->stats));
12701         }
12702 }
12703
12704 /**
12705  * i40e_queue_pair_clean_rings - Cleans all the rings of a queue pair
12706  * @vsi: vsi
12707  * @queue_pair: queue pair
12708  **/
12709 static void i40e_queue_pair_clean_rings(struct i40e_vsi *vsi, int queue_pair)
12710 {
12711         i40e_clean_tx_ring(vsi->tx_rings[queue_pair]);
12712         if (i40e_enabled_xdp_vsi(vsi)) {
12713                 /* Make sure that in-progress ndo_xdp_xmit calls are
12714                  * completed.
12715                  */
12716                 synchronize_rcu();
12717                 i40e_clean_tx_ring(vsi->xdp_rings[queue_pair]);
12718         }
12719         i40e_clean_rx_ring(vsi->rx_rings[queue_pair]);
12720 }
12721
12722 /**
12723  * i40e_queue_pair_toggle_napi - Enables/disables NAPI for a queue pair
12724  * @vsi: vsi
12725  * @queue_pair: queue pair
12726  * @enable: true for enable, false for disable
12727  **/
12728 static void i40e_queue_pair_toggle_napi(struct i40e_vsi *vsi, int queue_pair,
12729                                         bool enable)
12730 {
12731         struct i40e_ring *rxr = vsi->rx_rings[queue_pair];
12732         struct i40e_q_vector *q_vector = rxr->q_vector;
12733
12734         if (!vsi->netdev)
12735                 return;
12736
12737         /* All rings in a qp belong to the same qvector. */
12738         if (q_vector->rx.ring || q_vector->tx.ring) {
12739                 if (enable)
12740                         napi_enable(&q_vector->napi);
12741                 else
12742                         napi_disable(&q_vector->napi);
12743         }
12744 }
12745
12746 /**
12747  * i40e_queue_pair_toggle_rings - Enables/disables all rings for a queue pair
12748  * @vsi: vsi
12749  * @queue_pair: queue pair
12750  * @enable: true for enable, false for disable
12751  *
12752  * Returns 0 on success, <0 on failure.
12753  **/
12754 static int i40e_queue_pair_toggle_rings(struct i40e_vsi *vsi, int queue_pair,
12755                                         bool enable)
12756 {
12757         struct i40e_pf *pf = vsi->back;
12758         int pf_q, ret = 0;
12759
12760         pf_q = vsi->base_queue + queue_pair;
12761         ret = i40e_control_wait_tx_q(vsi->seid, pf, pf_q,
12762                                      false /*is xdp*/, enable);
12763         if (ret) {
12764                 dev_info(&pf->pdev->dev,
12765                          "VSI seid %d Tx ring %d %sable timeout\n",
12766                          vsi->seid, pf_q, (enable ? "en" : "dis"));
12767                 return ret;
12768         }
12769
12770         i40e_control_rx_q(pf, pf_q, enable);
12771         ret = i40e_pf_rxq_wait(pf, pf_q, enable);
12772         if (ret) {
12773                 dev_info(&pf->pdev->dev,
12774                          "VSI seid %d Rx ring %d %sable timeout\n",
12775                          vsi->seid, pf_q, (enable ? "en" : "dis"));
12776                 return ret;
12777         }
12778
12779         /* Due to HW errata, on Rx disable only, the register can
12780          * indicate done before it really is. Needs 50ms to be sure
12781          */
12782         if (!enable)
12783                 mdelay(50);
12784
12785         if (!i40e_enabled_xdp_vsi(vsi))
12786                 return ret;
12787
12788         ret = i40e_control_wait_tx_q(vsi->seid, pf,
12789                                      pf_q + vsi->alloc_queue_pairs,
12790                                      true /*is xdp*/, enable);
12791         if (ret) {
12792                 dev_info(&pf->pdev->dev,
12793                          "VSI seid %d XDP Tx ring %d %sable timeout\n",
12794                          vsi->seid, pf_q, (enable ? "en" : "dis"));
12795         }
12796
12797         return ret;
12798 }
12799
12800 /**
12801  * i40e_queue_pair_enable_irq - Enables interrupts for a queue pair
12802  * @vsi: vsi
12803  * @queue_pair: queue_pair
12804  **/
12805 static void i40e_queue_pair_enable_irq(struct i40e_vsi *vsi, int queue_pair)
12806 {
12807         struct i40e_ring *rxr = vsi->rx_rings[queue_pair];
12808         struct i40e_pf *pf = vsi->back;
12809         struct i40e_hw *hw = &pf->hw;
12810
12811         /* All rings in a qp belong to the same qvector. */
12812         if (pf->flags & I40E_FLAG_MSIX_ENABLED)
12813                 i40e_irq_dynamic_enable(vsi, rxr->q_vector->v_idx);
12814         else
12815                 i40e_irq_dynamic_enable_icr0(pf);
12816
12817         i40e_flush(hw);
12818 }
12819
12820 /**
12821  * i40e_queue_pair_disable_irq - Disables interrupts for a queue pair
12822  * @vsi: vsi
12823  * @queue_pair: queue_pair
12824  **/
12825 static void i40e_queue_pair_disable_irq(struct i40e_vsi *vsi, int queue_pair)
12826 {
12827         struct i40e_ring *rxr = vsi->rx_rings[queue_pair];
12828         struct i40e_pf *pf = vsi->back;
12829         struct i40e_hw *hw = &pf->hw;
12830
12831         /* For simplicity, instead of removing the qp interrupt causes
12832          * from the interrupt linked list, we simply disable the interrupt, and
12833          * leave the list intact.
12834          *
12835          * All rings in a qp belong to the same qvector.
12836          */
12837         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
12838                 u32 intpf = vsi->base_vector + rxr->q_vector->v_idx;
12839
12840                 wr32(hw, I40E_PFINT_DYN_CTLN(intpf - 1), 0);
12841                 i40e_flush(hw);
12842                 synchronize_irq(pf->msix_entries[intpf].vector);
12843         } else {
12844                 /* Legacy and MSI mode - this stops all interrupt handling */
12845                 wr32(hw, I40E_PFINT_ICR0_ENA, 0);
12846                 wr32(hw, I40E_PFINT_DYN_CTL0, 0);
12847                 i40e_flush(hw);
12848                 synchronize_irq(pf->pdev->irq);
12849         }
12850 }
12851
12852 /**
12853  * i40e_queue_pair_disable - Disables a queue pair
12854  * @vsi: vsi
12855  * @queue_pair: queue pair
12856  *
12857  * Returns 0 on success, <0 on failure.
12858  **/
12859 int i40e_queue_pair_disable(struct i40e_vsi *vsi, int queue_pair)
12860 {
12861         int err;
12862
12863         err = i40e_enter_busy_conf(vsi);
12864         if (err)
12865                 return err;
12866
12867         i40e_queue_pair_disable_irq(vsi, queue_pair);
12868         err = i40e_queue_pair_toggle_rings(vsi, queue_pair, false /* off */);
12869         i40e_queue_pair_toggle_napi(vsi, queue_pair, false /* off */);
12870         i40e_queue_pair_clean_rings(vsi, queue_pair);
12871         i40e_queue_pair_reset_stats(vsi, queue_pair);
12872
12873         return err;
12874 }
12875
12876 /**
12877  * i40e_queue_pair_enable - Enables a queue pair
12878  * @vsi: vsi
12879  * @queue_pair: queue pair
12880  *
12881  * Returns 0 on success, <0 on failure.
12882  **/
12883 int i40e_queue_pair_enable(struct i40e_vsi *vsi, int queue_pair)
12884 {
12885         int err;
12886
12887         err = i40e_configure_tx_ring(vsi->tx_rings[queue_pair]);
12888         if (err)
12889                 return err;
12890
12891         if (i40e_enabled_xdp_vsi(vsi)) {
12892                 err = i40e_configure_tx_ring(vsi->xdp_rings[queue_pair]);
12893                 if (err)
12894                         return err;
12895         }
12896
12897         err = i40e_configure_rx_ring(vsi->rx_rings[queue_pair]);
12898         if (err)
12899                 return err;
12900
12901         err = i40e_queue_pair_toggle_rings(vsi, queue_pair, true /* on */);
12902         i40e_queue_pair_toggle_napi(vsi, queue_pair, true /* on */);
12903         i40e_queue_pair_enable_irq(vsi, queue_pair);
12904
12905         i40e_exit_busy_conf(vsi);
12906
12907         return err;
12908 }
12909
12910 /**
12911  * i40e_xdp - implements ndo_bpf for i40e
12912  * @dev: netdevice
12913  * @xdp: XDP command
12914  **/
12915 static int i40e_xdp(struct net_device *dev,
12916                     struct netdev_bpf *xdp)
12917 {
12918         struct i40e_netdev_priv *np = netdev_priv(dev);
12919         struct i40e_vsi *vsi = np->vsi;
12920
12921         if (vsi->type != I40E_VSI_MAIN)
12922                 return -EINVAL;
12923
12924         switch (xdp->command) {
12925         case XDP_SETUP_PROG:
12926                 return i40e_xdp_setup(vsi, xdp->prog);
12927         case XDP_SETUP_XSK_POOL:
12928                 return i40e_xsk_pool_setup(vsi, xdp->xsk.pool,
12929                                            xdp->xsk.queue_id);
12930         default:
12931                 return -EINVAL;
12932         }
12933 }
12934
12935 static const struct net_device_ops i40e_netdev_ops = {
12936         .ndo_open               = i40e_open,
12937         .ndo_stop               = i40e_close,
12938         .ndo_start_xmit         = i40e_lan_xmit_frame,
12939         .ndo_get_stats64        = i40e_get_netdev_stats_struct,
12940         .ndo_set_rx_mode        = i40e_set_rx_mode,
12941         .ndo_validate_addr      = eth_validate_addr,
12942         .ndo_set_mac_address    = i40e_set_mac,
12943         .ndo_change_mtu         = i40e_change_mtu,
12944         .ndo_do_ioctl           = i40e_ioctl,
12945         .ndo_tx_timeout         = i40e_tx_timeout,
12946         .ndo_vlan_rx_add_vid    = i40e_vlan_rx_add_vid,
12947         .ndo_vlan_rx_kill_vid   = i40e_vlan_rx_kill_vid,
12948 #ifdef CONFIG_NET_POLL_CONTROLLER
12949         .ndo_poll_controller    = i40e_netpoll,
12950 #endif
12951         .ndo_setup_tc           = __i40e_setup_tc,
12952         .ndo_set_features       = i40e_set_features,
12953         .ndo_set_vf_mac         = i40e_ndo_set_vf_mac,
12954         .ndo_set_vf_vlan        = i40e_ndo_set_vf_port_vlan,
12955         .ndo_get_vf_stats       = i40e_get_vf_stats,
12956         .ndo_set_vf_rate        = i40e_ndo_set_vf_bw,
12957         .ndo_get_vf_config      = i40e_ndo_get_vf_config,
12958         .ndo_set_vf_link_state  = i40e_ndo_set_vf_link_state,
12959         .ndo_set_vf_spoofchk    = i40e_ndo_set_vf_spoofchk,
12960         .ndo_set_vf_trust       = i40e_ndo_set_vf_trust,
12961         .ndo_udp_tunnel_add     = i40e_udp_tunnel_add,
12962         .ndo_udp_tunnel_del     = i40e_udp_tunnel_del,
12963         .ndo_get_phys_port_id   = i40e_get_phys_port_id,
12964         .ndo_fdb_add            = i40e_ndo_fdb_add,
12965         .ndo_features_check     = i40e_features_check,
12966         .ndo_bridge_getlink     = i40e_ndo_bridge_getlink,
12967         .ndo_bridge_setlink     = i40e_ndo_bridge_setlink,
12968         .ndo_bpf                = i40e_xdp,
12969         .ndo_xdp_xmit           = i40e_xdp_xmit,
12970         .ndo_xsk_wakeup         = i40e_xsk_wakeup,
12971         .ndo_dfwd_add_station   = i40e_fwd_add,
12972         .ndo_dfwd_del_station   = i40e_fwd_del,
12973 };
12974
12975 /**
12976  * i40e_config_netdev - Setup the netdev flags
12977  * @vsi: the VSI being configured
12978  *
12979  * Returns 0 on success, negative value on failure
12980  **/
12981 static int i40e_config_netdev(struct i40e_vsi *vsi)
12982 {
12983         struct i40e_pf *pf = vsi->back;
12984         struct i40e_hw *hw = &pf->hw;
12985         struct i40e_netdev_priv *np;
12986         struct net_device *netdev;
12987         u8 broadcast[ETH_ALEN];
12988         u8 mac_addr[ETH_ALEN];
12989         int etherdev_size;
12990         netdev_features_t hw_enc_features;
12991         netdev_features_t hw_features;
12992
12993         etherdev_size = sizeof(struct i40e_netdev_priv);
12994         netdev = alloc_etherdev_mq(etherdev_size, vsi->alloc_queue_pairs);
12995         if (!netdev)
12996                 return -ENOMEM;
12997
12998         vsi->netdev = netdev;
12999         np = netdev_priv(netdev);
13000         np->vsi = vsi;
13001
13002         hw_enc_features = NETIF_F_SG                    |
13003                           NETIF_F_IP_CSUM               |
13004                           NETIF_F_IPV6_CSUM             |
13005                           NETIF_F_HIGHDMA               |
13006                           NETIF_F_SOFT_FEATURES         |
13007                           NETIF_F_TSO                   |
13008                           NETIF_F_TSO_ECN               |
13009                           NETIF_F_TSO6                  |
13010                           NETIF_F_GSO_GRE               |
13011                           NETIF_F_GSO_GRE_CSUM          |
13012                           NETIF_F_GSO_PARTIAL           |
13013                           NETIF_F_GSO_IPXIP4            |
13014                           NETIF_F_GSO_IPXIP6            |
13015                           NETIF_F_GSO_UDP_TUNNEL        |
13016                           NETIF_F_GSO_UDP_TUNNEL_CSUM   |
13017                           NETIF_F_GSO_UDP_L4            |
13018                           NETIF_F_SCTP_CRC              |
13019                           NETIF_F_RXHASH                |
13020                           NETIF_F_RXCSUM                |
13021                           0;
13022
13023         if (!(pf->hw_features & I40E_HW_OUTER_UDP_CSUM_CAPABLE))
13024                 netdev->gso_partial_features |= NETIF_F_GSO_UDP_TUNNEL_CSUM;
13025
13026         netdev->gso_partial_features |= NETIF_F_GSO_GRE_CSUM;
13027
13028         netdev->hw_enc_features |= hw_enc_features;
13029
13030         /* record features VLANs can make use of */
13031         netdev->vlan_features |= hw_enc_features | NETIF_F_TSO_MANGLEID;
13032
13033         /* enable macvlan offloads */
13034         netdev->hw_features |= NETIF_F_HW_L2FW_DOFFLOAD;
13035
13036         hw_features = hw_enc_features           |
13037                       NETIF_F_HW_VLAN_CTAG_TX   |
13038                       NETIF_F_HW_VLAN_CTAG_RX;
13039
13040         if (!(pf->flags & I40E_FLAG_MFP_ENABLED))
13041                 hw_features |= NETIF_F_NTUPLE | NETIF_F_HW_TC;
13042
13043         netdev->hw_features |= hw_features;
13044
13045         netdev->features |= hw_features | NETIF_F_HW_VLAN_CTAG_FILTER;
13046         netdev->hw_enc_features |= NETIF_F_TSO_MANGLEID;
13047
13048         if (vsi->type == I40E_VSI_MAIN) {
13049                 SET_NETDEV_DEV(netdev, &pf->pdev->dev);
13050                 ether_addr_copy(mac_addr, hw->mac.perm_addr);
13051                 /* The following steps are necessary for two reasons. First,
13052                  * some older NVM configurations load a default MAC-VLAN
13053                  * filter that will accept any tagged packet, and we want to
13054                  * replace this with a normal filter. Additionally, it is
13055                  * possible our MAC address was provided by the platform using
13056                  * Open Firmware or similar.
13057                  *
13058                  * Thus, we need to remove the default filter and install one
13059                  * specific to the MAC address.
13060                  */
13061                 i40e_rm_default_mac_filter(vsi, mac_addr);
13062                 spin_lock_bh(&vsi->mac_filter_hash_lock);
13063                 i40e_add_mac_filter(vsi, mac_addr);
13064                 spin_unlock_bh(&vsi->mac_filter_hash_lock);
13065         } else {
13066                 /* Relate the VSI_VMDQ name to the VSI_MAIN name. Note that we
13067                  * are still limited by IFNAMSIZ, but we're adding 'v%d\0' to
13068                  * the end, which is 4 bytes long, so force truncation of the
13069                  * original name by IFNAMSIZ - 4
13070                  */
13071                 snprintf(netdev->name, IFNAMSIZ, "%.*sv%%d",
13072                          IFNAMSIZ - 4,
13073                          pf->vsi[pf->lan_vsi]->netdev->name);
13074                 eth_random_addr(mac_addr);
13075
13076                 spin_lock_bh(&vsi->mac_filter_hash_lock);
13077                 i40e_add_mac_filter(vsi, mac_addr);
13078                 spin_unlock_bh(&vsi->mac_filter_hash_lock);
13079         }
13080
13081         /* Add the broadcast filter so that we initially will receive
13082          * broadcast packets. Note that when a new VLAN is first added the
13083          * driver will convert all filters marked I40E_VLAN_ANY into VLAN
13084          * specific filters as part of transitioning into "vlan" operation.
13085          * When more VLANs are added, the driver will copy each existing MAC
13086          * filter and add it for the new VLAN.
13087          *
13088          * Broadcast filters are handled specially by
13089          * i40e_sync_filters_subtask, as the driver must to set the broadcast
13090          * promiscuous bit instead of adding this directly as a MAC/VLAN
13091          * filter. The subtask will update the correct broadcast promiscuous
13092          * bits as VLANs become active or inactive.
13093          */
13094         eth_broadcast_addr(broadcast);
13095         spin_lock_bh(&vsi->mac_filter_hash_lock);
13096         i40e_add_mac_filter(vsi, broadcast);
13097         spin_unlock_bh(&vsi->mac_filter_hash_lock);
13098
13099         ether_addr_copy(netdev->dev_addr, mac_addr);
13100         ether_addr_copy(netdev->perm_addr, mac_addr);
13101
13102         /* i40iw_net_event() reads 16 bytes from neigh->primary_key */
13103         netdev->neigh_priv_len = sizeof(u32) * 4;
13104
13105         netdev->priv_flags |= IFF_UNICAST_FLT;
13106         netdev->priv_flags |= IFF_SUPP_NOFCS;
13107         /* Setup netdev TC information */
13108         i40e_vsi_config_netdev_tc(vsi, vsi->tc_config.enabled_tc);
13109
13110         netdev->netdev_ops = &i40e_netdev_ops;
13111         netdev->watchdog_timeo = 5 * HZ;
13112         i40e_set_ethtool_ops(netdev);
13113
13114         /* MTU range: 68 - 9706 */
13115         netdev->min_mtu = ETH_MIN_MTU;
13116         netdev->max_mtu = I40E_MAX_RXBUFFER - I40E_PACKET_HDR_PAD;
13117
13118         return 0;
13119 }
13120
13121 /**
13122  * i40e_vsi_delete - Delete a VSI from the switch
13123  * @vsi: the VSI being removed
13124  *
13125  * Returns 0 on success, negative value on failure
13126  **/
13127 static void i40e_vsi_delete(struct i40e_vsi *vsi)
13128 {
13129         /* remove default VSI is not allowed */
13130         if (vsi == vsi->back->vsi[vsi->back->lan_vsi])
13131                 return;
13132
13133         i40e_aq_delete_element(&vsi->back->hw, vsi->seid, NULL);
13134 }
13135
13136 /**
13137  * i40e_is_vsi_uplink_mode_veb - Check if the VSI's uplink bridge mode is VEB
13138  * @vsi: the VSI being queried
13139  *
13140  * Returns 1 if HW bridge mode is VEB and return 0 in case of VEPA mode
13141  **/
13142 int i40e_is_vsi_uplink_mode_veb(struct i40e_vsi *vsi)
13143 {
13144         struct i40e_veb *veb;
13145         struct i40e_pf *pf = vsi->back;
13146
13147         /* Uplink is not a bridge so default to VEB */
13148         if (vsi->veb_idx >= I40E_MAX_VEB)
13149                 return 1;
13150
13151         veb = pf->veb[vsi->veb_idx];
13152         if (!veb) {
13153                 dev_info(&pf->pdev->dev,
13154                          "There is no veb associated with the bridge\n");
13155                 return -ENOENT;
13156         }
13157
13158         /* Uplink is a bridge in VEPA mode */
13159         if (veb->bridge_mode & BRIDGE_MODE_VEPA) {
13160                 return 0;
13161         } else {
13162                 /* Uplink is a bridge in VEB mode */
13163                 return 1;
13164         }
13165
13166         /* VEPA is now default bridge, so return 0 */
13167         return 0;
13168 }
13169
13170 /**
13171  * i40e_add_vsi - Add a VSI to the switch
13172  * @vsi: the VSI being configured
13173  *
13174  * This initializes a VSI context depending on the VSI type to be added and
13175  * passes it down to the add_vsi aq command.
13176  **/
13177 static int i40e_add_vsi(struct i40e_vsi *vsi)
13178 {
13179         int ret = -ENODEV;
13180         struct i40e_pf *pf = vsi->back;
13181         struct i40e_hw *hw = &pf->hw;
13182         struct i40e_vsi_context ctxt;
13183         struct i40e_mac_filter *f;
13184         struct hlist_node *h;
13185         int bkt;
13186
13187         u8 enabled_tc = 0x1; /* TC0 enabled */
13188         int f_count = 0;
13189
13190         memset(&ctxt, 0, sizeof(ctxt));
13191         switch (vsi->type) {
13192         case I40E_VSI_MAIN:
13193                 /* The PF's main VSI is already setup as part of the
13194                  * device initialization, so we'll not bother with
13195                  * the add_vsi call, but we will retrieve the current
13196                  * VSI context.
13197                  */
13198                 ctxt.seid = pf->main_vsi_seid;
13199                 ctxt.pf_num = pf->hw.pf_id;
13200                 ctxt.vf_num = 0;
13201                 ret = i40e_aq_get_vsi_params(&pf->hw, &ctxt, NULL);
13202                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
13203                 if (ret) {
13204                         dev_info(&pf->pdev->dev,
13205                                  "couldn't get PF vsi config, err %s aq_err %s\n",
13206                                  i40e_stat_str(&pf->hw, ret),
13207                                  i40e_aq_str(&pf->hw,
13208                                              pf->hw.aq.asq_last_status));
13209                         return -ENOENT;
13210                 }
13211                 vsi->info = ctxt.info;
13212                 vsi->info.valid_sections = 0;
13213
13214                 vsi->seid = ctxt.seid;
13215                 vsi->id = ctxt.vsi_number;
13216
13217                 enabled_tc = i40e_pf_get_tc_map(pf);
13218
13219                 /* Source pruning is enabled by default, so the flag is
13220                  * negative logic - if it's set, we need to fiddle with
13221                  * the VSI to disable source pruning.
13222                  */
13223                 if (pf->flags & I40E_FLAG_SOURCE_PRUNING_DISABLED) {
13224                         memset(&ctxt, 0, sizeof(ctxt));
13225                         ctxt.seid = pf->main_vsi_seid;
13226                         ctxt.pf_num = pf->hw.pf_id;
13227                         ctxt.vf_num = 0;
13228                         ctxt.info.valid_sections |=
13229                                      cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
13230                         ctxt.info.switch_id =
13231                                    cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_LOCAL_LB);
13232                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
13233                         if (ret) {
13234                                 dev_info(&pf->pdev->dev,
13235                                          "update vsi failed, err %s aq_err %s\n",
13236                                          i40e_stat_str(&pf->hw, ret),
13237                                          i40e_aq_str(&pf->hw,
13238                                                      pf->hw.aq.asq_last_status));
13239                                 ret = -ENOENT;
13240                                 goto err;
13241                         }
13242                 }
13243
13244                 /* MFP mode setup queue map and update VSI */
13245                 if ((pf->flags & I40E_FLAG_MFP_ENABLED) &&
13246                     !(pf->hw.func_caps.iscsi)) { /* NIC type PF */
13247                         memset(&ctxt, 0, sizeof(ctxt));
13248                         ctxt.seid = pf->main_vsi_seid;
13249                         ctxt.pf_num = pf->hw.pf_id;
13250                         ctxt.vf_num = 0;
13251                         i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, false);
13252                         ret = i40e_aq_update_vsi_params(hw, &ctxt, NULL);
13253                         if (ret) {
13254                                 dev_info(&pf->pdev->dev,
13255                                          "update vsi failed, err %s aq_err %s\n",
13256                                          i40e_stat_str(&pf->hw, ret),
13257                                          i40e_aq_str(&pf->hw,
13258                                                     pf->hw.aq.asq_last_status));
13259                                 ret = -ENOENT;
13260                                 goto err;
13261                         }
13262                         /* update the local VSI info queue map */
13263                         i40e_vsi_update_queue_map(vsi, &ctxt);
13264                         vsi->info.valid_sections = 0;
13265                 } else {
13266                         /* Default/Main VSI is only enabled for TC0
13267                          * reconfigure it to enable all TCs that are
13268                          * available on the port in SFP mode.
13269                          * For MFP case the iSCSI PF would use this
13270                          * flow to enable LAN+iSCSI TC.
13271                          */
13272                         ret = i40e_vsi_config_tc(vsi, enabled_tc);
13273                         if (ret) {
13274                                 /* Single TC condition is not fatal,
13275                                  * message and continue
13276                                  */
13277                                 dev_info(&pf->pdev->dev,
13278                                          "failed to configure TCs for main VSI tc_map 0x%08x, err %s aq_err %s\n",
13279                                          enabled_tc,
13280                                          i40e_stat_str(&pf->hw, ret),
13281                                          i40e_aq_str(&pf->hw,
13282                                                     pf->hw.aq.asq_last_status));
13283                         }
13284                 }
13285                 break;
13286
13287         case I40E_VSI_FDIR:
13288                 ctxt.pf_num = hw->pf_id;
13289                 ctxt.vf_num = 0;
13290                 ctxt.uplink_seid = vsi->uplink_seid;
13291                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
13292                 ctxt.flags = I40E_AQ_VSI_TYPE_PF;
13293                 if ((pf->flags & I40E_FLAG_VEB_MODE_ENABLED) &&
13294                     (i40e_is_vsi_uplink_mode_veb(vsi))) {
13295                         ctxt.info.valid_sections |=
13296                              cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
13297                         ctxt.info.switch_id =
13298                            cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
13299                 }
13300                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
13301                 break;
13302
13303         case I40E_VSI_VMDQ2:
13304                 ctxt.pf_num = hw->pf_id;
13305                 ctxt.vf_num = 0;
13306                 ctxt.uplink_seid = vsi->uplink_seid;
13307                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
13308                 ctxt.flags = I40E_AQ_VSI_TYPE_VMDQ2;
13309
13310                 /* This VSI is connected to VEB so the switch_id
13311                  * should be set to zero by default.
13312                  */
13313                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
13314                         ctxt.info.valid_sections |=
13315                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
13316                         ctxt.info.switch_id =
13317                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
13318                 }
13319
13320                 /* Setup the VSI tx/rx queue map for TC0 only for now */
13321                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
13322                 break;
13323
13324         case I40E_VSI_SRIOV:
13325                 ctxt.pf_num = hw->pf_id;
13326                 ctxt.vf_num = vsi->vf_id + hw->func_caps.vf_base_id;
13327                 ctxt.uplink_seid = vsi->uplink_seid;
13328                 ctxt.connection_type = I40E_AQ_VSI_CONN_TYPE_NORMAL;
13329                 ctxt.flags = I40E_AQ_VSI_TYPE_VF;
13330
13331                 /* This VSI is connected to VEB so the switch_id
13332                  * should be set to zero by default.
13333                  */
13334                 if (i40e_is_vsi_uplink_mode_veb(vsi)) {
13335                         ctxt.info.valid_sections |=
13336                                 cpu_to_le16(I40E_AQ_VSI_PROP_SWITCH_VALID);
13337                         ctxt.info.switch_id =
13338                                 cpu_to_le16(I40E_AQ_VSI_SW_ID_FLAG_ALLOW_LB);
13339                 }
13340
13341                 if (vsi->back->flags & I40E_FLAG_IWARP_ENABLED) {
13342                         ctxt.info.valid_sections |=
13343                                 cpu_to_le16(I40E_AQ_VSI_PROP_QUEUE_OPT_VALID);
13344                         ctxt.info.queueing_opt_flags |=
13345                                 (I40E_AQ_VSI_QUE_OPT_TCP_ENA |
13346                                  I40E_AQ_VSI_QUE_OPT_RSS_LUT_VSI);
13347                 }
13348
13349                 ctxt.info.valid_sections |= cpu_to_le16(I40E_AQ_VSI_PROP_VLAN_VALID);
13350                 ctxt.info.port_vlan_flags |= I40E_AQ_VSI_PVLAN_MODE_ALL;
13351                 if (pf->vf[vsi->vf_id].spoofchk) {
13352                         ctxt.info.valid_sections |=
13353                                 cpu_to_le16(I40E_AQ_VSI_PROP_SECURITY_VALID);
13354                         ctxt.info.sec_flags |=
13355                                 (I40E_AQ_VSI_SEC_FLAG_ENABLE_VLAN_CHK |
13356                                  I40E_AQ_VSI_SEC_FLAG_ENABLE_MAC_CHK);
13357                 }
13358                 /* Setup the VSI tx/rx queue map for TC0 only for now */
13359                 i40e_vsi_setup_queue_map(vsi, &ctxt, enabled_tc, true);
13360                 break;
13361
13362         case I40E_VSI_IWARP:
13363                 /* send down message to iWARP */
13364                 break;
13365
13366         default:
13367                 return -ENODEV;
13368         }
13369
13370         if (vsi->type != I40E_VSI_MAIN) {
13371                 ret = i40e_aq_add_vsi(hw, &ctxt, NULL);
13372                 if (ret) {
13373                         dev_info(&vsi->back->pdev->dev,
13374                                  "add vsi failed, err %s aq_err %s\n",
13375                                  i40e_stat_str(&pf->hw, ret),
13376                                  i40e_aq_str(&pf->hw,
13377                                              pf->hw.aq.asq_last_status));
13378                         ret = -ENOENT;
13379                         goto err;
13380                 }
13381                 vsi->info = ctxt.info;
13382                 vsi->info.valid_sections = 0;
13383                 vsi->seid = ctxt.seid;
13384                 vsi->id = ctxt.vsi_number;
13385         }
13386
13387         vsi->active_filters = 0;
13388         clear_bit(__I40E_VSI_OVERFLOW_PROMISC, vsi->state);
13389         spin_lock_bh(&vsi->mac_filter_hash_lock);
13390         /* If macvlan filters already exist, force them to get loaded */
13391         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist) {
13392                 f->state = I40E_FILTER_NEW;
13393                 f_count++;
13394         }
13395         spin_unlock_bh(&vsi->mac_filter_hash_lock);
13396
13397         if (f_count) {
13398                 vsi->flags |= I40E_VSI_FLAG_FILTER_CHANGED;
13399                 set_bit(__I40E_MACVLAN_SYNC_PENDING, pf->state);
13400         }
13401
13402         /* Update VSI BW information */
13403         ret = i40e_vsi_get_bw_info(vsi);
13404         if (ret) {
13405                 dev_info(&pf->pdev->dev,
13406                          "couldn't get vsi bw info, err %s aq_err %s\n",
13407                          i40e_stat_str(&pf->hw, ret),
13408                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
13409                 /* VSI is already added so not tearing that up */
13410                 ret = 0;
13411         }
13412
13413 err:
13414         return ret;
13415 }
13416
13417 /**
13418  * i40e_vsi_release - Delete a VSI and free its resources
13419  * @vsi: the VSI being removed
13420  *
13421  * Returns 0 on success or < 0 on error
13422  **/
13423 int i40e_vsi_release(struct i40e_vsi *vsi)
13424 {
13425         struct i40e_mac_filter *f;
13426         struct hlist_node *h;
13427         struct i40e_veb *veb = NULL;
13428         struct i40e_pf *pf;
13429         u16 uplink_seid;
13430         int i, n, bkt;
13431
13432         pf = vsi->back;
13433
13434         /* release of a VEB-owner or last VSI is not allowed */
13435         if (vsi->flags & I40E_VSI_FLAG_VEB_OWNER) {
13436                 dev_info(&pf->pdev->dev, "VSI %d has existing VEB %d\n",
13437                          vsi->seid, vsi->uplink_seid);
13438                 return -ENODEV;
13439         }
13440         if (vsi == pf->vsi[pf->lan_vsi] &&
13441             !test_bit(__I40E_DOWN, pf->state)) {
13442                 dev_info(&pf->pdev->dev, "Can't remove PF VSI\n");
13443                 return -ENODEV;
13444         }
13445
13446         uplink_seid = vsi->uplink_seid;
13447         if (vsi->type != I40E_VSI_SRIOV) {
13448                 if (vsi->netdev_registered) {
13449                         vsi->netdev_registered = false;
13450                         if (vsi->netdev) {
13451                                 /* results in a call to i40e_close() */
13452                                 unregister_netdev(vsi->netdev);
13453                         }
13454                 } else {
13455                         i40e_vsi_close(vsi);
13456                 }
13457                 i40e_vsi_disable_irq(vsi);
13458         }
13459
13460         spin_lock_bh(&vsi->mac_filter_hash_lock);
13461
13462         /* clear the sync flag on all filters */
13463         if (vsi->netdev) {
13464                 __dev_uc_unsync(vsi->netdev, NULL);
13465                 __dev_mc_unsync(vsi->netdev, NULL);
13466         }
13467
13468         /* make sure any remaining filters are marked for deletion */
13469         hash_for_each_safe(vsi->mac_filter_hash, bkt, h, f, hlist)
13470                 __i40e_del_filter(vsi, f);
13471
13472         spin_unlock_bh(&vsi->mac_filter_hash_lock);
13473
13474         i40e_sync_vsi_filters(vsi);
13475
13476         i40e_vsi_delete(vsi);
13477         i40e_vsi_free_q_vectors(vsi);
13478         if (vsi->netdev) {
13479                 free_netdev(vsi->netdev);
13480                 vsi->netdev = NULL;
13481         }
13482         i40e_vsi_clear_rings(vsi);
13483         i40e_vsi_clear(vsi);
13484
13485         /* If this was the last thing on the VEB, except for the
13486          * controlling VSI, remove the VEB, which puts the controlling
13487          * VSI onto the next level down in the switch.
13488          *
13489          * Well, okay, there's one more exception here: don't remove
13490          * the orphan VEBs yet.  We'll wait for an explicit remove request
13491          * from up the network stack.
13492          */
13493         for (n = 0, i = 0; i < pf->num_alloc_vsi; i++) {
13494                 if (pf->vsi[i] &&
13495                     pf->vsi[i]->uplink_seid == uplink_seid &&
13496                     (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
13497                         n++;      /* count the VSIs */
13498                 }
13499         }
13500         for (i = 0; i < I40E_MAX_VEB; i++) {
13501                 if (!pf->veb[i])
13502                         continue;
13503                 if (pf->veb[i]->uplink_seid == uplink_seid)
13504                         n++;     /* count the VEBs */
13505                 if (pf->veb[i]->seid == uplink_seid)
13506                         veb = pf->veb[i];
13507         }
13508         if (n == 0 && veb && veb->uplink_seid != 0)
13509                 i40e_veb_release(veb);
13510
13511         return 0;
13512 }
13513
13514 /**
13515  * i40e_vsi_setup_vectors - Set up the q_vectors for the given VSI
13516  * @vsi: ptr to the VSI
13517  *
13518  * This should only be called after i40e_vsi_mem_alloc() which allocates the
13519  * corresponding SW VSI structure and initializes num_queue_pairs for the
13520  * newly allocated VSI.
13521  *
13522  * Returns 0 on success or negative on failure
13523  **/
13524 static int i40e_vsi_setup_vectors(struct i40e_vsi *vsi)
13525 {
13526         int ret = -ENOENT;
13527         struct i40e_pf *pf = vsi->back;
13528
13529         if (vsi->q_vectors[0]) {
13530                 dev_info(&pf->pdev->dev, "VSI %d has existing q_vectors\n",
13531                          vsi->seid);
13532                 return -EEXIST;
13533         }
13534
13535         if (vsi->base_vector) {
13536                 dev_info(&pf->pdev->dev, "VSI %d has non-zero base vector %d\n",
13537                          vsi->seid, vsi->base_vector);
13538                 return -EEXIST;
13539         }
13540
13541         ret = i40e_vsi_alloc_q_vectors(vsi);
13542         if (ret) {
13543                 dev_info(&pf->pdev->dev,
13544                          "failed to allocate %d q_vector for VSI %d, ret=%d\n",
13545                          vsi->num_q_vectors, vsi->seid, ret);
13546                 vsi->num_q_vectors = 0;
13547                 goto vector_setup_out;
13548         }
13549
13550         /* In Legacy mode, we do not have to get any other vector since we
13551          * piggyback on the misc/ICR0 for queue interrupts.
13552         */
13553         if (!(pf->flags & I40E_FLAG_MSIX_ENABLED))
13554                 return ret;
13555         if (vsi->num_q_vectors)
13556                 vsi->base_vector = i40e_get_lump(pf, pf->irq_pile,
13557                                                  vsi->num_q_vectors, vsi->idx);
13558         if (vsi->base_vector < 0) {
13559                 dev_info(&pf->pdev->dev,
13560                          "failed to get tracking for %d vectors for VSI %d, err=%d\n",
13561                          vsi->num_q_vectors, vsi->seid, vsi->base_vector);
13562                 i40e_vsi_free_q_vectors(vsi);
13563                 ret = -ENOENT;
13564                 goto vector_setup_out;
13565         }
13566
13567 vector_setup_out:
13568         return ret;
13569 }
13570
13571 /**
13572  * i40e_vsi_reinit_setup - return and reallocate resources for a VSI
13573  * @vsi: pointer to the vsi.
13574  *
13575  * This re-allocates a vsi's queue resources.
13576  *
13577  * Returns pointer to the successfully allocated and configured VSI sw struct
13578  * on success, otherwise returns NULL on failure.
13579  **/
13580 static struct i40e_vsi *i40e_vsi_reinit_setup(struct i40e_vsi *vsi)
13581 {
13582         u16 alloc_queue_pairs;
13583         struct i40e_pf *pf;
13584         u8 enabled_tc;
13585         int ret;
13586
13587         if (!vsi)
13588                 return NULL;
13589
13590         pf = vsi->back;
13591
13592         i40e_put_lump(pf->qp_pile, vsi->base_queue, vsi->idx);
13593         i40e_vsi_clear_rings(vsi);
13594
13595         i40e_vsi_free_arrays(vsi, false);
13596         i40e_set_num_rings_in_vsi(vsi);
13597         ret = i40e_vsi_alloc_arrays(vsi, false);
13598         if (ret)
13599                 goto err_vsi;
13600
13601         alloc_queue_pairs = vsi->alloc_queue_pairs *
13602                             (i40e_enabled_xdp_vsi(vsi) ? 2 : 1);
13603
13604         ret = i40e_get_lump(pf, pf->qp_pile, alloc_queue_pairs, vsi->idx);
13605         if (ret < 0) {
13606                 dev_info(&pf->pdev->dev,
13607                          "failed to get tracking for %d queues for VSI %d err %d\n",
13608                          alloc_queue_pairs, vsi->seid, ret);
13609                 goto err_vsi;
13610         }
13611         vsi->base_queue = ret;
13612
13613         /* Update the FW view of the VSI. Force a reset of TC and queue
13614          * layout configurations.
13615          */
13616         enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
13617         pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
13618         pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
13619         i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
13620         if (vsi->type == I40E_VSI_MAIN)
13621                 i40e_rm_default_mac_filter(vsi, pf->hw.mac.perm_addr);
13622
13623         /* assign it some queues */
13624         ret = i40e_alloc_rings(vsi);
13625         if (ret)
13626                 goto err_rings;
13627
13628         /* map all of the rings to the q_vectors */
13629         i40e_vsi_map_rings_to_vectors(vsi);
13630         return vsi;
13631
13632 err_rings:
13633         i40e_vsi_free_q_vectors(vsi);
13634         if (vsi->netdev_registered) {
13635                 vsi->netdev_registered = false;
13636                 unregister_netdev(vsi->netdev);
13637                 free_netdev(vsi->netdev);
13638                 vsi->netdev = NULL;
13639         }
13640         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
13641 err_vsi:
13642         i40e_vsi_clear(vsi);
13643         return NULL;
13644 }
13645
13646 /**
13647  * i40e_vsi_setup - Set up a VSI by a given type
13648  * @pf: board private structure
13649  * @type: VSI type
13650  * @uplink_seid: the switch element to link to
13651  * @param1: usage depends upon VSI type. For VF types, indicates VF id
13652  *
13653  * This allocates the sw VSI structure and its queue resources, then add a VSI
13654  * to the identified VEB.
13655  *
13656  * Returns pointer to the successfully allocated and configure VSI sw struct on
13657  * success, otherwise returns NULL on failure.
13658  **/
13659 struct i40e_vsi *i40e_vsi_setup(struct i40e_pf *pf, u8 type,
13660                                 u16 uplink_seid, u32 param1)
13661 {
13662         struct i40e_vsi *vsi = NULL;
13663         struct i40e_veb *veb = NULL;
13664         u16 alloc_queue_pairs;
13665         int ret, i;
13666         int v_idx;
13667
13668         /* The requested uplink_seid must be either
13669          *     - the PF's port seid
13670          *              no VEB is needed because this is the PF
13671          *              or this is a Flow Director special case VSI
13672          *     - seid of an existing VEB
13673          *     - seid of a VSI that owns an existing VEB
13674          *     - seid of a VSI that doesn't own a VEB
13675          *              a new VEB is created and the VSI becomes the owner
13676          *     - seid of the PF VSI, which is what creates the first VEB
13677          *              this is a special case of the previous
13678          *
13679          * Find which uplink_seid we were given and create a new VEB if needed
13680          */
13681         for (i = 0; i < I40E_MAX_VEB; i++) {
13682                 if (pf->veb[i] && pf->veb[i]->seid == uplink_seid) {
13683                         veb = pf->veb[i];
13684                         break;
13685                 }
13686         }
13687
13688         if (!veb && uplink_seid != pf->mac_seid) {
13689
13690                 for (i = 0; i < pf->num_alloc_vsi; i++) {
13691                         if (pf->vsi[i] && pf->vsi[i]->seid == uplink_seid) {
13692                                 vsi = pf->vsi[i];
13693                                 break;
13694                         }
13695                 }
13696                 if (!vsi) {
13697                         dev_info(&pf->pdev->dev, "no such uplink_seid %d\n",
13698                                  uplink_seid);
13699                         return NULL;
13700                 }
13701
13702                 if (vsi->uplink_seid == pf->mac_seid)
13703                         veb = i40e_veb_setup(pf, 0, pf->mac_seid, vsi->seid,
13704                                              vsi->tc_config.enabled_tc);
13705                 else if ((vsi->flags & I40E_VSI_FLAG_VEB_OWNER) == 0)
13706                         veb = i40e_veb_setup(pf, 0, vsi->uplink_seid, vsi->seid,
13707                                              vsi->tc_config.enabled_tc);
13708                 if (veb) {
13709                         if (vsi->seid != pf->vsi[pf->lan_vsi]->seid) {
13710                                 dev_info(&vsi->back->pdev->dev,
13711                                          "New VSI creation error, uplink seid of LAN VSI expected.\n");
13712                                 return NULL;
13713                         }
13714                         /* We come up by default in VEPA mode if SRIOV is not
13715                          * already enabled, in which case we can't force VEPA
13716                          * mode.
13717                          */
13718                         if (!(pf->flags & I40E_FLAG_VEB_MODE_ENABLED)) {
13719                                 veb->bridge_mode = BRIDGE_MODE_VEPA;
13720                                 pf->flags &= ~I40E_FLAG_VEB_MODE_ENABLED;
13721                         }
13722                         i40e_config_bridge_mode(veb);
13723                 }
13724                 for (i = 0; i < I40E_MAX_VEB && !veb; i++) {
13725                         if (pf->veb[i] && pf->veb[i]->seid == vsi->uplink_seid)
13726                                 veb = pf->veb[i];
13727                 }
13728                 if (!veb) {
13729                         dev_info(&pf->pdev->dev, "couldn't add VEB\n");
13730                         return NULL;
13731                 }
13732
13733                 vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
13734                 uplink_seid = veb->seid;
13735         }
13736
13737         /* get vsi sw struct */
13738         v_idx = i40e_vsi_mem_alloc(pf, type);
13739         if (v_idx < 0)
13740                 goto err_alloc;
13741         vsi = pf->vsi[v_idx];
13742         if (!vsi)
13743                 goto err_alloc;
13744         vsi->type = type;
13745         vsi->veb_idx = (veb ? veb->idx : I40E_NO_VEB);
13746
13747         if (type == I40E_VSI_MAIN)
13748                 pf->lan_vsi = v_idx;
13749         else if (type == I40E_VSI_SRIOV)
13750                 vsi->vf_id = param1;
13751         /* assign it some queues */
13752         alloc_queue_pairs = vsi->alloc_queue_pairs *
13753                             (i40e_enabled_xdp_vsi(vsi) ? 2 : 1);
13754
13755         ret = i40e_get_lump(pf, pf->qp_pile, alloc_queue_pairs, vsi->idx);
13756         if (ret < 0) {
13757                 dev_info(&pf->pdev->dev,
13758                          "failed to get tracking for %d queues for VSI %d err=%d\n",
13759                          alloc_queue_pairs, vsi->seid, ret);
13760                 goto err_vsi;
13761         }
13762         vsi->base_queue = ret;
13763
13764         /* get a VSI from the hardware */
13765         vsi->uplink_seid = uplink_seid;
13766         ret = i40e_add_vsi(vsi);
13767         if (ret)
13768                 goto err_vsi;
13769
13770         switch (vsi->type) {
13771         /* setup the netdev if needed */
13772         case I40E_VSI_MAIN:
13773         case I40E_VSI_VMDQ2:
13774                 ret = i40e_config_netdev(vsi);
13775                 if (ret)
13776                         goto err_netdev;
13777                 ret = register_netdev(vsi->netdev);
13778                 if (ret)
13779                         goto err_netdev;
13780                 vsi->netdev_registered = true;
13781                 netif_carrier_off(vsi->netdev);
13782 #ifdef CONFIG_I40E_DCB
13783                 /* Setup DCB netlink interface */
13784                 i40e_dcbnl_setup(vsi);
13785 #endif /* CONFIG_I40E_DCB */
13786                 fallthrough;
13787         case I40E_VSI_FDIR:
13788                 /* set up vectors and rings if needed */
13789                 ret = i40e_vsi_setup_vectors(vsi);
13790                 if (ret)
13791                         goto err_msix;
13792
13793                 ret = i40e_alloc_rings(vsi);
13794                 if (ret)
13795                         goto err_rings;
13796
13797                 /* map all of the rings to the q_vectors */
13798                 i40e_vsi_map_rings_to_vectors(vsi);
13799
13800                 i40e_vsi_reset_stats(vsi);
13801                 break;
13802         default:
13803                 /* no netdev or rings for the other VSI types */
13804                 break;
13805         }
13806
13807         if ((pf->hw_features & I40E_HW_RSS_AQ_CAPABLE) &&
13808             (vsi->type == I40E_VSI_VMDQ2)) {
13809                 ret = i40e_vsi_config_rss(vsi);
13810         }
13811         return vsi;
13812
13813 err_rings:
13814         i40e_vsi_free_q_vectors(vsi);
13815 err_msix:
13816         if (vsi->netdev_registered) {
13817                 vsi->netdev_registered = false;
13818                 unregister_netdev(vsi->netdev);
13819                 free_netdev(vsi->netdev);
13820                 vsi->netdev = NULL;
13821         }
13822 err_netdev:
13823         i40e_aq_delete_element(&pf->hw, vsi->seid, NULL);
13824 err_vsi:
13825         i40e_vsi_clear(vsi);
13826 err_alloc:
13827         return NULL;
13828 }
13829
13830 /**
13831  * i40e_veb_get_bw_info - Query VEB BW information
13832  * @veb: the veb to query
13833  *
13834  * Query the Tx scheduler BW configuration data for given VEB
13835  **/
13836 static int i40e_veb_get_bw_info(struct i40e_veb *veb)
13837 {
13838         struct i40e_aqc_query_switching_comp_ets_config_resp ets_data;
13839         struct i40e_aqc_query_switching_comp_bw_config_resp bw_data;
13840         struct i40e_pf *pf = veb->pf;
13841         struct i40e_hw *hw = &pf->hw;
13842         u32 tc_bw_max;
13843         int ret = 0;
13844         int i;
13845
13846         ret = i40e_aq_query_switch_comp_bw_config(hw, veb->seid,
13847                                                   &bw_data, NULL);
13848         if (ret) {
13849                 dev_info(&pf->pdev->dev,
13850                          "query veb bw config failed, err %s aq_err %s\n",
13851                          i40e_stat_str(&pf->hw, ret),
13852                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
13853                 goto out;
13854         }
13855
13856         ret = i40e_aq_query_switch_comp_ets_config(hw, veb->seid,
13857                                                    &ets_data, NULL);
13858         if (ret) {
13859                 dev_info(&pf->pdev->dev,
13860                          "query veb bw ets config failed, err %s aq_err %s\n",
13861                          i40e_stat_str(&pf->hw, ret),
13862                          i40e_aq_str(&pf->hw, hw->aq.asq_last_status));
13863                 goto out;
13864         }
13865
13866         veb->bw_limit = le16_to_cpu(ets_data.port_bw_limit);
13867         veb->bw_max_quanta = ets_data.tc_bw_max;
13868         veb->is_abs_credits = bw_data.absolute_credits_enable;
13869         veb->enabled_tc = ets_data.tc_valid_bits;
13870         tc_bw_max = le16_to_cpu(bw_data.tc_bw_max[0]) |
13871                     (le16_to_cpu(bw_data.tc_bw_max[1]) << 16);
13872         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
13873                 veb->bw_tc_share_credits[i] = bw_data.tc_bw_share_credits[i];
13874                 veb->bw_tc_limit_credits[i] =
13875                                         le16_to_cpu(bw_data.tc_bw_limits[i]);
13876                 veb->bw_tc_max_quanta[i] = ((tc_bw_max >> (i*4)) & 0x7);
13877         }
13878
13879 out:
13880         return ret;
13881 }
13882
13883 /**
13884  * i40e_veb_mem_alloc - Allocates the next available struct veb in the PF
13885  * @pf: board private structure
13886  *
13887  * On error: returns error code (negative)
13888  * On success: returns vsi index in PF (positive)
13889  **/
13890 static int i40e_veb_mem_alloc(struct i40e_pf *pf)
13891 {
13892         int ret = -ENOENT;
13893         struct i40e_veb *veb;
13894         int i;
13895
13896         /* Need to protect the allocation of switch elements at the PF level */
13897         mutex_lock(&pf->switch_mutex);
13898
13899         /* VEB list may be fragmented if VEB creation/destruction has
13900          * been happening.  We can afford to do a quick scan to look
13901          * for any free slots in the list.
13902          *
13903          * find next empty veb slot, looping back around if necessary
13904          */
13905         i = 0;
13906         while ((i < I40E_MAX_VEB) && (pf->veb[i] != NULL))
13907                 i++;
13908         if (i >= I40E_MAX_VEB) {
13909                 ret = -ENOMEM;
13910                 goto err_alloc_veb;  /* out of VEB slots! */
13911         }
13912
13913         veb = kzalloc(sizeof(*veb), GFP_KERNEL);
13914         if (!veb) {
13915                 ret = -ENOMEM;
13916                 goto err_alloc_veb;
13917         }
13918         veb->pf = pf;
13919         veb->idx = i;
13920         veb->enabled_tc = 1;
13921
13922         pf->veb[i] = veb;
13923         ret = i;
13924 err_alloc_veb:
13925         mutex_unlock(&pf->switch_mutex);
13926         return ret;
13927 }
13928
13929 /**
13930  * i40e_switch_branch_release - Delete a branch of the switch tree
13931  * @branch: where to start deleting
13932  *
13933  * This uses recursion to find the tips of the branch to be
13934  * removed, deleting until we get back to and can delete this VEB.
13935  **/
13936 static void i40e_switch_branch_release(struct i40e_veb *branch)
13937 {
13938         struct i40e_pf *pf = branch->pf;
13939         u16 branch_seid = branch->seid;
13940         u16 veb_idx = branch->idx;
13941         int i;
13942
13943         /* release any VEBs on this VEB - RECURSION */
13944         for (i = 0; i < I40E_MAX_VEB; i++) {
13945                 if (!pf->veb[i])
13946                         continue;
13947                 if (pf->veb[i]->uplink_seid == branch->seid)
13948                         i40e_switch_branch_release(pf->veb[i]);
13949         }
13950
13951         /* Release the VSIs on this VEB, but not the owner VSI.
13952          *
13953          * NOTE: Removing the last VSI on a VEB has the SIDE EFFECT of removing
13954          *       the VEB itself, so don't use (*branch) after this loop.
13955          */
13956         for (i = 0; i < pf->num_alloc_vsi; i++) {
13957                 if (!pf->vsi[i])
13958                         continue;
13959                 if (pf->vsi[i]->uplink_seid == branch_seid &&
13960                    (pf->vsi[i]->flags & I40E_VSI_FLAG_VEB_OWNER) == 0) {
13961                         i40e_vsi_release(pf->vsi[i]);
13962                 }
13963         }
13964
13965         /* There's one corner case where the VEB might not have been
13966          * removed, so double check it here and remove it if needed.
13967          * This case happens if the veb was created from the debugfs
13968          * commands and no VSIs were added to it.
13969          */
13970         if (pf->veb[veb_idx])
13971                 i40e_veb_release(pf->veb[veb_idx]);
13972 }
13973
13974 /**
13975  * i40e_veb_clear - remove veb struct
13976  * @veb: the veb to remove
13977  **/
13978 static void i40e_veb_clear(struct i40e_veb *veb)
13979 {
13980         if (!veb)
13981                 return;
13982
13983         if (veb->pf) {
13984                 struct i40e_pf *pf = veb->pf;
13985
13986                 mutex_lock(&pf->switch_mutex);
13987                 if (pf->veb[veb->idx] == veb)
13988                         pf->veb[veb->idx] = NULL;
13989                 mutex_unlock(&pf->switch_mutex);
13990         }
13991
13992         kfree(veb);
13993 }
13994
13995 /**
13996  * i40e_veb_release - Delete a VEB and free its resources
13997  * @veb: the VEB being removed
13998  **/
13999 void i40e_veb_release(struct i40e_veb *veb)
14000 {
14001         struct i40e_vsi *vsi = NULL;
14002         struct i40e_pf *pf;
14003         int i, n = 0;
14004
14005         pf = veb->pf;
14006
14007         /* find the remaining VSI and check for extras */
14008         for (i = 0; i < pf->num_alloc_vsi; i++) {
14009                 if (pf->vsi[i] && pf->vsi[i]->uplink_seid == veb->seid) {
14010                         n++;
14011                         vsi = pf->vsi[i];
14012                 }
14013         }
14014         if (n != 1) {
14015                 dev_info(&pf->pdev->dev,
14016                          "can't remove VEB %d with %d VSIs left\n",
14017                          veb->seid, n);
14018                 return;
14019         }
14020
14021         /* move the remaining VSI to uplink veb */
14022         vsi->flags &= ~I40E_VSI_FLAG_VEB_OWNER;
14023         if (veb->uplink_seid) {
14024                 vsi->uplink_seid = veb->uplink_seid;
14025                 if (veb->uplink_seid == pf->mac_seid)
14026                         vsi->veb_idx = I40E_NO_VEB;
14027                 else
14028                         vsi->veb_idx = veb->veb_idx;
14029         } else {
14030                 /* floating VEB */
14031                 vsi->uplink_seid = pf->vsi[pf->lan_vsi]->uplink_seid;
14032                 vsi->veb_idx = pf->vsi[pf->lan_vsi]->veb_idx;
14033         }
14034
14035         i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
14036         i40e_veb_clear(veb);
14037 }
14038
14039 /**
14040  * i40e_add_veb - create the VEB in the switch
14041  * @veb: the VEB to be instantiated
14042  * @vsi: the controlling VSI
14043  **/
14044 static int i40e_add_veb(struct i40e_veb *veb, struct i40e_vsi *vsi)
14045 {
14046         struct i40e_pf *pf = veb->pf;
14047         bool enable_stats = !!(pf->flags & I40E_FLAG_VEB_STATS_ENABLED);
14048         int ret;
14049
14050         ret = i40e_aq_add_veb(&pf->hw, veb->uplink_seid, vsi->seid,
14051                               veb->enabled_tc, false,
14052                               &veb->seid, enable_stats, NULL);
14053
14054         /* get a VEB from the hardware */
14055         if (ret) {
14056                 dev_info(&pf->pdev->dev,
14057                          "couldn't add VEB, err %s aq_err %s\n",
14058                          i40e_stat_str(&pf->hw, ret),
14059                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
14060                 return -EPERM;
14061         }
14062
14063         /* get statistics counter */
14064         ret = i40e_aq_get_veb_parameters(&pf->hw, veb->seid, NULL, NULL,
14065                                          &veb->stats_idx, NULL, NULL, NULL);
14066         if (ret) {
14067                 dev_info(&pf->pdev->dev,
14068                          "couldn't get VEB statistics idx, err %s aq_err %s\n",
14069                          i40e_stat_str(&pf->hw, ret),
14070                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
14071                 return -EPERM;
14072         }
14073         ret = i40e_veb_get_bw_info(veb);
14074         if (ret) {
14075                 dev_info(&pf->pdev->dev,
14076                          "couldn't get VEB bw info, err %s aq_err %s\n",
14077                          i40e_stat_str(&pf->hw, ret),
14078                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
14079                 i40e_aq_delete_element(&pf->hw, veb->seid, NULL);
14080                 return -ENOENT;
14081         }
14082
14083         vsi->uplink_seid = veb->seid;
14084         vsi->veb_idx = veb->idx;
14085         vsi->flags |= I40E_VSI_FLAG_VEB_OWNER;
14086
14087         return 0;
14088 }
14089
14090 /**
14091  * i40e_veb_setup - Set up a VEB
14092  * @pf: board private structure
14093  * @flags: VEB setup flags
14094  * @uplink_seid: the switch element to link to
14095  * @vsi_seid: the initial VSI seid
14096  * @enabled_tc: Enabled TC bit-map
14097  *
14098  * This allocates the sw VEB structure and links it into the switch
14099  * It is possible and legal for this to be a duplicate of an already
14100  * existing VEB.  It is also possible for both uplink and vsi seids
14101  * to be zero, in order to create a floating VEB.
14102  *
14103  * Returns pointer to the successfully allocated VEB sw struct on
14104  * success, otherwise returns NULL on failure.
14105  **/
14106 struct i40e_veb *i40e_veb_setup(struct i40e_pf *pf, u16 flags,
14107                                 u16 uplink_seid, u16 vsi_seid,
14108                                 u8 enabled_tc)
14109 {
14110         struct i40e_veb *veb, *uplink_veb = NULL;
14111         int vsi_idx, veb_idx;
14112         int ret;
14113
14114         /* if one seid is 0, the other must be 0 to create a floating relay */
14115         if ((uplink_seid == 0 || vsi_seid == 0) &&
14116             (uplink_seid + vsi_seid != 0)) {
14117                 dev_info(&pf->pdev->dev,
14118                          "one, not both seid's are 0: uplink=%d vsi=%d\n",
14119                          uplink_seid, vsi_seid);
14120                 return NULL;
14121         }
14122
14123         /* make sure there is such a vsi and uplink */
14124         for (vsi_idx = 0; vsi_idx < pf->num_alloc_vsi; vsi_idx++)
14125                 if (pf->vsi[vsi_idx] && pf->vsi[vsi_idx]->seid == vsi_seid)
14126                         break;
14127         if (vsi_idx == pf->num_alloc_vsi && vsi_seid != 0) {
14128                 dev_info(&pf->pdev->dev, "vsi seid %d not found\n",
14129                          vsi_seid);
14130                 return NULL;
14131         }
14132
14133         if (uplink_seid && uplink_seid != pf->mac_seid) {
14134                 for (veb_idx = 0; veb_idx < I40E_MAX_VEB; veb_idx++) {
14135                         if (pf->veb[veb_idx] &&
14136                             pf->veb[veb_idx]->seid == uplink_seid) {
14137                                 uplink_veb = pf->veb[veb_idx];
14138                                 break;
14139                         }
14140                 }
14141                 if (!uplink_veb) {
14142                         dev_info(&pf->pdev->dev,
14143                                  "uplink seid %d not found\n", uplink_seid);
14144                         return NULL;
14145                 }
14146         }
14147
14148         /* get veb sw struct */
14149         veb_idx = i40e_veb_mem_alloc(pf);
14150         if (veb_idx < 0)
14151                 goto err_alloc;
14152         veb = pf->veb[veb_idx];
14153         veb->flags = flags;
14154         veb->uplink_seid = uplink_seid;
14155         veb->veb_idx = (uplink_veb ? uplink_veb->idx : I40E_NO_VEB);
14156         veb->enabled_tc = (enabled_tc ? enabled_tc : 0x1);
14157
14158         /* create the VEB in the switch */
14159         ret = i40e_add_veb(veb, pf->vsi[vsi_idx]);
14160         if (ret)
14161                 goto err_veb;
14162         if (vsi_idx == pf->lan_vsi)
14163                 pf->lan_veb = veb->idx;
14164
14165         return veb;
14166
14167 err_veb:
14168         i40e_veb_clear(veb);
14169 err_alloc:
14170         return NULL;
14171 }
14172
14173 /**
14174  * i40e_setup_pf_switch_element - set PF vars based on switch type
14175  * @pf: board private structure
14176  * @ele: element we are building info from
14177  * @num_reported: total number of elements
14178  * @printconfig: should we print the contents
14179  *
14180  * helper function to assist in extracting a few useful SEID values.
14181  **/
14182 static void i40e_setup_pf_switch_element(struct i40e_pf *pf,
14183                                 struct i40e_aqc_switch_config_element_resp *ele,
14184                                 u16 num_reported, bool printconfig)
14185 {
14186         u16 downlink_seid = le16_to_cpu(ele->downlink_seid);
14187         u16 uplink_seid = le16_to_cpu(ele->uplink_seid);
14188         u8 element_type = ele->element_type;
14189         u16 seid = le16_to_cpu(ele->seid);
14190
14191         if (printconfig)
14192                 dev_info(&pf->pdev->dev,
14193                          "type=%d seid=%d uplink=%d downlink=%d\n",
14194                          element_type, seid, uplink_seid, downlink_seid);
14195
14196         switch (element_type) {
14197         case I40E_SWITCH_ELEMENT_TYPE_MAC:
14198                 pf->mac_seid = seid;
14199                 break;
14200         case I40E_SWITCH_ELEMENT_TYPE_VEB:
14201                 /* Main VEB? */
14202                 if (uplink_seid != pf->mac_seid)
14203                         break;
14204                 if (pf->lan_veb >= I40E_MAX_VEB) {
14205                         int v;
14206
14207                         /* find existing or else empty VEB */
14208                         for (v = 0; v < I40E_MAX_VEB; v++) {
14209                                 if (pf->veb[v] && (pf->veb[v]->seid == seid)) {
14210                                         pf->lan_veb = v;
14211                                         break;
14212                                 }
14213                         }
14214                         if (pf->lan_veb >= I40E_MAX_VEB) {
14215                                 v = i40e_veb_mem_alloc(pf);
14216                                 if (v < 0)
14217                                         break;
14218                                 pf->lan_veb = v;
14219                         }
14220                 }
14221                 if (pf->lan_veb >= I40E_MAX_VEB)
14222                         break;
14223
14224                 pf->veb[pf->lan_veb]->seid = seid;
14225                 pf->veb[pf->lan_veb]->uplink_seid = pf->mac_seid;
14226                 pf->veb[pf->lan_veb]->pf = pf;
14227                 pf->veb[pf->lan_veb]->veb_idx = I40E_NO_VEB;
14228                 break;
14229         case I40E_SWITCH_ELEMENT_TYPE_VSI:
14230                 if (num_reported != 1)
14231                         break;
14232                 /* This is immediately after a reset so we can assume this is
14233                  * the PF's VSI
14234                  */
14235                 pf->mac_seid = uplink_seid;
14236                 pf->pf_seid = downlink_seid;
14237                 pf->main_vsi_seid = seid;
14238                 if (printconfig)
14239                         dev_info(&pf->pdev->dev,
14240                                  "pf_seid=%d main_vsi_seid=%d\n",
14241                                  pf->pf_seid, pf->main_vsi_seid);
14242                 break;
14243         case I40E_SWITCH_ELEMENT_TYPE_PF:
14244         case I40E_SWITCH_ELEMENT_TYPE_VF:
14245         case I40E_SWITCH_ELEMENT_TYPE_EMP:
14246         case I40E_SWITCH_ELEMENT_TYPE_BMC:
14247         case I40E_SWITCH_ELEMENT_TYPE_PE:
14248         case I40E_SWITCH_ELEMENT_TYPE_PA:
14249                 /* ignore these for now */
14250                 break;
14251         default:
14252                 dev_info(&pf->pdev->dev, "unknown element type=%d seid=%d\n",
14253                          element_type, seid);
14254                 break;
14255         }
14256 }
14257
14258 /**
14259  * i40e_fetch_switch_configuration - Get switch config from firmware
14260  * @pf: board private structure
14261  * @printconfig: should we print the contents
14262  *
14263  * Get the current switch configuration from the device and
14264  * extract a few useful SEID values.
14265  **/
14266 int i40e_fetch_switch_configuration(struct i40e_pf *pf, bool printconfig)
14267 {
14268         struct i40e_aqc_get_switch_config_resp *sw_config;
14269         u16 next_seid = 0;
14270         int ret = 0;
14271         u8 *aq_buf;
14272         int i;
14273
14274         aq_buf = kzalloc(I40E_AQ_LARGE_BUF, GFP_KERNEL);
14275         if (!aq_buf)
14276                 return -ENOMEM;
14277
14278         sw_config = (struct i40e_aqc_get_switch_config_resp *)aq_buf;
14279         do {
14280                 u16 num_reported, num_total;
14281
14282                 ret = i40e_aq_get_switch_config(&pf->hw, sw_config,
14283                                                 I40E_AQ_LARGE_BUF,
14284                                                 &next_seid, NULL);
14285                 if (ret) {
14286                         dev_info(&pf->pdev->dev,
14287                                  "get switch config failed err %s aq_err %s\n",
14288                                  i40e_stat_str(&pf->hw, ret),
14289                                  i40e_aq_str(&pf->hw,
14290                                              pf->hw.aq.asq_last_status));
14291                         kfree(aq_buf);
14292                         return -ENOENT;
14293                 }
14294
14295                 num_reported = le16_to_cpu(sw_config->header.num_reported);
14296                 num_total = le16_to_cpu(sw_config->header.num_total);
14297
14298                 if (printconfig)
14299                         dev_info(&pf->pdev->dev,
14300                                  "header: %d reported %d total\n",
14301                                  num_reported, num_total);
14302
14303                 for (i = 0; i < num_reported; i++) {
14304                         struct i40e_aqc_switch_config_element_resp *ele =
14305                                 &sw_config->element[i];
14306
14307                         i40e_setup_pf_switch_element(pf, ele, num_reported,
14308                                                      printconfig);
14309                 }
14310         } while (next_seid != 0);
14311
14312         kfree(aq_buf);
14313         return ret;
14314 }
14315
14316 /**
14317  * i40e_setup_pf_switch - Setup the HW switch on startup or after reset
14318  * @pf: board private structure
14319  * @reinit: if the Main VSI needs to re-initialized.
14320  *
14321  * Returns 0 on success, negative value on failure
14322  **/
14323 static int i40e_setup_pf_switch(struct i40e_pf *pf, bool reinit)
14324 {
14325         u16 flags = 0;
14326         int ret;
14327
14328         /* find out what's out there already */
14329         ret = i40e_fetch_switch_configuration(pf, false);
14330         if (ret) {
14331                 dev_info(&pf->pdev->dev,
14332                          "couldn't fetch switch config, err %s aq_err %s\n",
14333                          i40e_stat_str(&pf->hw, ret),
14334                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
14335                 return ret;
14336         }
14337         i40e_pf_reset_stats(pf);
14338
14339         /* set the switch config bit for the whole device to
14340          * support limited promisc or true promisc
14341          * when user requests promisc. The default is limited
14342          * promisc.
14343         */
14344
14345         if ((pf->hw.pf_id == 0) &&
14346             !(pf->flags & I40E_FLAG_TRUE_PROMISC_SUPPORT)) {
14347                 flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
14348                 pf->last_sw_conf_flags = flags;
14349         }
14350
14351         if (pf->hw.pf_id == 0) {
14352                 u16 valid_flags;
14353
14354                 valid_flags = I40E_AQ_SET_SWITCH_CFG_PROMISC;
14355                 ret = i40e_aq_set_switch_config(&pf->hw, flags, valid_flags, 0,
14356                                                 NULL);
14357                 if (ret && pf->hw.aq.asq_last_status != I40E_AQ_RC_ESRCH) {
14358                         dev_info(&pf->pdev->dev,
14359                                  "couldn't set switch config bits, err %s aq_err %s\n",
14360                                  i40e_stat_str(&pf->hw, ret),
14361                                  i40e_aq_str(&pf->hw,
14362                                              pf->hw.aq.asq_last_status));
14363                         /* not a fatal problem, just keep going */
14364                 }
14365                 pf->last_sw_conf_valid_flags = valid_flags;
14366         }
14367
14368         /* first time setup */
14369         if (pf->lan_vsi == I40E_NO_VSI || reinit) {
14370                 struct i40e_vsi *vsi = NULL;
14371                 u16 uplink_seid;
14372
14373                 /* Set up the PF VSI associated with the PF's main VSI
14374                  * that is already in the HW switch
14375                  */
14376                 if (pf->lan_veb < I40E_MAX_VEB && pf->veb[pf->lan_veb])
14377                         uplink_seid = pf->veb[pf->lan_veb]->seid;
14378                 else
14379                         uplink_seid = pf->mac_seid;
14380                 if (pf->lan_vsi == I40E_NO_VSI)
14381                         vsi = i40e_vsi_setup(pf, I40E_VSI_MAIN, uplink_seid, 0);
14382                 else if (reinit)
14383                         vsi = i40e_vsi_reinit_setup(pf->vsi[pf->lan_vsi]);
14384                 if (!vsi) {
14385                         dev_info(&pf->pdev->dev, "setup of MAIN VSI failed\n");
14386                         i40e_cloud_filter_exit(pf);
14387                         i40e_fdir_teardown(pf);
14388                         return -EAGAIN;
14389                 }
14390         } else {
14391                 /* force a reset of TC and queue layout configurations */
14392                 u8 enabled_tc = pf->vsi[pf->lan_vsi]->tc_config.enabled_tc;
14393
14394                 pf->vsi[pf->lan_vsi]->tc_config.enabled_tc = 0;
14395                 pf->vsi[pf->lan_vsi]->seid = pf->main_vsi_seid;
14396                 i40e_vsi_config_tc(pf->vsi[pf->lan_vsi], enabled_tc);
14397         }
14398         i40e_vlan_stripping_disable(pf->vsi[pf->lan_vsi]);
14399
14400         i40e_fdir_sb_setup(pf);
14401
14402         /* Setup static PF queue filter control settings */
14403         ret = i40e_setup_pf_filter_control(pf);
14404         if (ret) {
14405                 dev_info(&pf->pdev->dev, "setup_pf_filter_control failed: %d\n",
14406                          ret);
14407                 /* Failure here should not stop continuing other steps */
14408         }
14409
14410         /* enable RSS in the HW, even for only one queue, as the stack can use
14411          * the hash
14412          */
14413         if ((pf->flags & I40E_FLAG_RSS_ENABLED))
14414                 i40e_pf_config_rss(pf);
14415
14416         /* fill in link information and enable LSE reporting */
14417         i40e_link_event(pf);
14418
14419         /* Initialize user-specific link properties */
14420         pf->fc_autoneg_status = ((pf->hw.phy.link_info.an_info &
14421                                   I40E_AQ_AN_COMPLETED) ? true : false);
14422
14423         i40e_ptp_init(pf);
14424
14425         /* repopulate tunnel port filters */
14426         i40e_sync_udp_filters(pf);
14427
14428         return ret;
14429 }
14430
14431 /**
14432  * i40e_determine_queue_usage - Work out queue distribution
14433  * @pf: board private structure
14434  **/
14435 static void i40e_determine_queue_usage(struct i40e_pf *pf)
14436 {
14437         int queues_left;
14438         int q_max;
14439
14440         pf->num_lan_qps = 0;
14441
14442         /* Find the max queues to be put into basic use.  We'll always be
14443          * using TC0, whether or not DCB is running, and TC0 will get the
14444          * big RSS set.
14445          */
14446         queues_left = pf->hw.func_caps.num_tx_qp;
14447
14448         if ((queues_left == 1) ||
14449             !(pf->flags & I40E_FLAG_MSIX_ENABLED)) {
14450                 /* one qp for PF, no queues for anything else */
14451                 queues_left = 0;
14452                 pf->alloc_rss_size = pf->num_lan_qps = 1;
14453
14454                 /* make sure all the fancies are disabled */
14455                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
14456                                I40E_FLAG_IWARP_ENABLED  |
14457                                I40E_FLAG_FD_SB_ENABLED  |
14458                                I40E_FLAG_FD_ATR_ENABLED |
14459                                I40E_FLAG_DCB_CAPABLE    |
14460                                I40E_FLAG_DCB_ENABLED    |
14461                                I40E_FLAG_SRIOV_ENABLED  |
14462                                I40E_FLAG_VMDQ_ENABLED);
14463                 pf->flags |= I40E_FLAG_FD_SB_INACTIVE;
14464         } else if (!(pf->flags & (I40E_FLAG_RSS_ENABLED |
14465                                   I40E_FLAG_FD_SB_ENABLED |
14466                                   I40E_FLAG_FD_ATR_ENABLED |
14467                                   I40E_FLAG_DCB_CAPABLE))) {
14468                 /* one qp for PF */
14469                 pf->alloc_rss_size = pf->num_lan_qps = 1;
14470                 queues_left -= pf->num_lan_qps;
14471
14472                 pf->flags &= ~(I40E_FLAG_RSS_ENABLED    |
14473                                I40E_FLAG_IWARP_ENABLED  |
14474                                I40E_FLAG_FD_SB_ENABLED  |
14475                                I40E_FLAG_FD_ATR_ENABLED |
14476                                I40E_FLAG_DCB_ENABLED    |
14477                                I40E_FLAG_VMDQ_ENABLED);
14478                 pf->flags |= I40E_FLAG_FD_SB_INACTIVE;
14479         } else {
14480                 /* Not enough queues for all TCs */
14481                 if ((pf->flags & I40E_FLAG_DCB_CAPABLE) &&
14482                     (queues_left < I40E_MAX_TRAFFIC_CLASS)) {
14483                         pf->flags &= ~(I40E_FLAG_DCB_CAPABLE |
14484                                         I40E_FLAG_DCB_ENABLED);
14485                         dev_info(&pf->pdev->dev, "not enough queues for DCB. DCB is disabled.\n");
14486                 }
14487
14488                 /* limit lan qps to the smaller of qps, cpus or msix */
14489                 q_max = max_t(int, pf->rss_size_max, num_online_cpus());
14490                 q_max = min_t(int, q_max, pf->hw.func_caps.num_tx_qp);
14491                 q_max = min_t(int, q_max, pf->hw.func_caps.num_msix_vectors);
14492                 pf->num_lan_qps = q_max;
14493
14494                 queues_left -= pf->num_lan_qps;
14495         }
14496
14497         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
14498                 if (queues_left > 1) {
14499                         queues_left -= 1; /* save 1 queue for FD */
14500                 } else {
14501                         pf->flags &= ~I40E_FLAG_FD_SB_ENABLED;
14502                         pf->flags |= I40E_FLAG_FD_SB_INACTIVE;
14503                         dev_info(&pf->pdev->dev, "not enough queues for Flow Director. Flow Director feature is disabled\n");
14504                 }
14505         }
14506
14507         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
14508             pf->num_vf_qps && pf->num_req_vfs && queues_left) {
14509                 pf->num_req_vfs = min_t(int, pf->num_req_vfs,
14510                                         (queues_left / pf->num_vf_qps));
14511                 queues_left -= (pf->num_req_vfs * pf->num_vf_qps);
14512         }
14513
14514         if ((pf->flags & I40E_FLAG_VMDQ_ENABLED) &&
14515             pf->num_vmdq_vsis && pf->num_vmdq_qps && queues_left) {
14516                 pf->num_vmdq_vsis = min_t(int, pf->num_vmdq_vsis,
14517                                           (queues_left / pf->num_vmdq_qps));
14518                 queues_left -= (pf->num_vmdq_vsis * pf->num_vmdq_qps);
14519         }
14520
14521         pf->queues_left = queues_left;
14522         dev_dbg(&pf->pdev->dev,
14523                 "qs_avail=%d FD SB=%d lan_qs=%d lan_tc0=%d vf=%d*%d vmdq=%d*%d, remaining=%d\n",
14524                 pf->hw.func_caps.num_tx_qp,
14525                 !!(pf->flags & I40E_FLAG_FD_SB_ENABLED),
14526                 pf->num_lan_qps, pf->alloc_rss_size, pf->num_req_vfs,
14527                 pf->num_vf_qps, pf->num_vmdq_vsis, pf->num_vmdq_qps,
14528                 queues_left);
14529 }
14530
14531 /**
14532  * i40e_setup_pf_filter_control - Setup PF static filter control
14533  * @pf: PF to be setup
14534  *
14535  * i40e_setup_pf_filter_control sets up a PF's initial filter control
14536  * settings. If PE/FCoE are enabled then it will also set the per PF
14537  * based filter sizes required for them. It also enables Flow director,
14538  * ethertype and macvlan type filter settings for the pf.
14539  *
14540  * Returns 0 on success, negative on failure
14541  **/
14542 static int i40e_setup_pf_filter_control(struct i40e_pf *pf)
14543 {
14544         struct i40e_filter_control_settings *settings = &pf->filter_settings;
14545
14546         settings->hash_lut_size = I40E_HASH_LUT_SIZE_128;
14547
14548         /* Flow Director is enabled */
14549         if (pf->flags & (I40E_FLAG_FD_SB_ENABLED | I40E_FLAG_FD_ATR_ENABLED))
14550                 settings->enable_fdir = true;
14551
14552         /* Ethtype and MACVLAN filters enabled for PF */
14553         settings->enable_ethtype = true;
14554         settings->enable_macvlan = true;
14555
14556         if (i40e_set_filter_control(&pf->hw, settings))
14557                 return -ENOENT;
14558
14559         return 0;
14560 }
14561
14562 #define INFO_STRING_LEN 255
14563 #define REMAIN(__x) (INFO_STRING_LEN - (__x))
14564 static void i40e_print_features(struct i40e_pf *pf)
14565 {
14566         struct i40e_hw *hw = &pf->hw;
14567         char *buf;
14568         int i;
14569
14570         buf = kmalloc(INFO_STRING_LEN, GFP_KERNEL);
14571         if (!buf)
14572                 return;
14573
14574         i = snprintf(buf, INFO_STRING_LEN, "Features: PF-id[%d]", hw->pf_id);
14575 #ifdef CONFIG_PCI_IOV
14576         i += scnprintf(&buf[i], REMAIN(i), " VFs: %d", pf->num_req_vfs);
14577 #endif
14578         i += scnprintf(&buf[i], REMAIN(i), " VSIs: %d QP: %d",
14579                       pf->hw.func_caps.num_vsis,
14580                       pf->vsi[pf->lan_vsi]->num_queue_pairs);
14581         if (pf->flags & I40E_FLAG_RSS_ENABLED)
14582                 i += scnprintf(&buf[i], REMAIN(i), " RSS");
14583         if (pf->flags & I40E_FLAG_FD_ATR_ENABLED)
14584                 i += scnprintf(&buf[i], REMAIN(i), " FD_ATR");
14585         if (pf->flags & I40E_FLAG_FD_SB_ENABLED) {
14586                 i += scnprintf(&buf[i], REMAIN(i), " FD_SB");
14587                 i += scnprintf(&buf[i], REMAIN(i), " NTUPLE");
14588         }
14589         if (pf->flags & I40E_FLAG_DCB_CAPABLE)
14590                 i += scnprintf(&buf[i], REMAIN(i), " DCB");
14591         i += scnprintf(&buf[i], REMAIN(i), " VxLAN");
14592         i += scnprintf(&buf[i], REMAIN(i), " Geneve");
14593         if (pf->flags & I40E_FLAG_PTP)
14594                 i += scnprintf(&buf[i], REMAIN(i), " PTP");
14595         if (pf->flags & I40E_FLAG_VEB_MODE_ENABLED)
14596                 i += scnprintf(&buf[i], REMAIN(i), " VEB");
14597         else
14598                 i += scnprintf(&buf[i], REMAIN(i), " VEPA");
14599
14600         dev_info(&pf->pdev->dev, "%s\n", buf);
14601         kfree(buf);
14602         WARN_ON(i > INFO_STRING_LEN);
14603 }
14604
14605 /**
14606  * i40e_get_platform_mac_addr - get platform-specific MAC address
14607  * @pdev: PCI device information struct
14608  * @pf: board private structure
14609  *
14610  * Look up the MAC address for the device. First we'll try
14611  * eth_platform_get_mac_address, which will check Open Firmware, or arch
14612  * specific fallback. Otherwise, we'll default to the stored value in
14613  * firmware.
14614  **/
14615 static void i40e_get_platform_mac_addr(struct pci_dev *pdev, struct i40e_pf *pf)
14616 {
14617         if (eth_platform_get_mac_address(&pdev->dev, pf->hw.mac.addr))
14618                 i40e_get_mac_addr(&pf->hw, pf->hw.mac.addr);
14619 }
14620
14621 /**
14622  * i40e_set_fec_in_flags - helper function for setting FEC options in flags
14623  * @fec_cfg: FEC option to set in flags
14624  * @flags: ptr to flags in which we set FEC option
14625  **/
14626 void i40e_set_fec_in_flags(u8 fec_cfg, u32 *flags)
14627 {
14628         if (fec_cfg & I40E_AQ_SET_FEC_AUTO)
14629                 *flags |= I40E_FLAG_RS_FEC | I40E_FLAG_BASE_R_FEC;
14630         if ((fec_cfg & I40E_AQ_SET_FEC_REQUEST_RS) ||
14631             (fec_cfg & I40E_AQ_SET_FEC_ABILITY_RS)) {
14632                 *flags |= I40E_FLAG_RS_FEC;
14633                 *flags &= ~I40E_FLAG_BASE_R_FEC;
14634         }
14635         if ((fec_cfg & I40E_AQ_SET_FEC_REQUEST_KR) ||
14636             (fec_cfg & I40E_AQ_SET_FEC_ABILITY_KR)) {
14637                 *flags |= I40E_FLAG_BASE_R_FEC;
14638                 *flags &= ~I40E_FLAG_RS_FEC;
14639         }
14640         if (fec_cfg == 0)
14641                 *flags &= ~(I40E_FLAG_RS_FEC | I40E_FLAG_BASE_R_FEC);
14642 }
14643
14644 /**
14645  * i40e_check_recovery_mode - check if we are running transition firmware
14646  * @pf: board private structure
14647  *
14648  * Check registers indicating the firmware runs in recovery mode. Sets the
14649  * appropriate driver state.
14650  *
14651  * Returns true if the recovery mode was detected, false otherwise
14652  **/
14653 static bool i40e_check_recovery_mode(struct i40e_pf *pf)
14654 {
14655         u32 val = rd32(&pf->hw, I40E_GL_FWSTS);
14656
14657         if (val & I40E_GL_FWSTS_FWS1B_MASK) {
14658                 dev_crit(&pf->pdev->dev, "Firmware recovery mode detected. Limiting functionality.\n");
14659                 dev_crit(&pf->pdev->dev, "Refer to the Intel(R) Ethernet Adapters and Devices User Guide for details on firmware recovery mode.\n");
14660                 set_bit(__I40E_RECOVERY_MODE, pf->state);
14661
14662                 return true;
14663         }
14664         if (test_bit(__I40E_RECOVERY_MODE, pf->state))
14665                 dev_info(&pf->pdev->dev, "Please do Power-On Reset to initialize adapter in normal mode with full functionality.\n");
14666
14667         return false;
14668 }
14669
14670 /**
14671  * i40e_pf_loop_reset - perform reset in a loop.
14672  * @pf: board private structure
14673  *
14674  * This function is useful when a NIC is about to enter recovery mode.
14675  * When a NIC's internal data structures are corrupted the NIC's
14676  * firmware is going to enter recovery mode.
14677  * Right after a POR it takes about 7 minutes for firmware to enter
14678  * recovery mode. Until that time a NIC is in some kind of intermediate
14679  * state. After that time period the NIC almost surely enters
14680  * recovery mode. The only way for a driver to detect intermediate
14681  * state is to issue a series of pf-resets and check a return value.
14682  * If a PF reset returns success then the firmware could be in recovery
14683  * mode so the caller of this code needs to check for recovery mode
14684  * if this function returns success. There is a little chance that
14685  * firmware will hang in intermediate state forever.
14686  * Since waiting 7 minutes is quite a lot of time this function waits
14687  * 10 seconds and then gives up by returning an error.
14688  *
14689  * Return 0 on success, negative on failure.
14690  **/
14691 static i40e_status i40e_pf_loop_reset(struct i40e_pf *pf)
14692 {
14693         /* wait max 10 seconds for PF reset to succeed */
14694         const unsigned long time_end = jiffies + 10 * HZ;
14695
14696         struct i40e_hw *hw = &pf->hw;
14697         i40e_status ret;
14698
14699         ret = i40e_pf_reset(hw);
14700         while (ret != I40E_SUCCESS && time_before(jiffies, time_end)) {
14701                 usleep_range(10000, 20000);
14702                 ret = i40e_pf_reset(hw);
14703         }
14704
14705         if (ret == I40E_SUCCESS)
14706                 pf->pfr_count++;
14707         else
14708                 dev_info(&pf->pdev->dev, "PF reset failed: %d\n", ret);
14709
14710         return ret;
14711 }
14712
14713 /**
14714  * i40e_check_fw_empr - check if FW issued unexpected EMP Reset
14715  * @pf: board private structure
14716  *
14717  * Check FW registers to determine if FW issued unexpected EMP Reset.
14718  * Every time when unexpected EMP Reset occurs the FW increments
14719  * a counter of unexpected EMP Resets. When the counter reaches 10
14720  * the FW should enter the Recovery mode
14721  *
14722  * Returns true if FW issued unexpected EMP Reset
14723  **/
14724 static bool i40e_check_fw_empr(struct i40e_pf *pf)
14725 {
14726         const u32 fw_sts = rd32(&pf->hw, I40E_GL_FWSTS) &
14727                            I40E_GL_FWSTS_FWS1B_MASK;
14728         return (fw_sts > I40E_GL_FWSTS_FWS1B_EMPR_0) &&
14729                (fw_sts <= I40E_GL_FWSTS_FWS1B_EMPR_10);
14730 }
14731
14732 /**
14733  * i40e_handle_resets - handle EMP resets and PF resets
14734  * @pf: board private structure
14735  *
14736  * Handle both EMP resets and PF resets and conclude whether there are
14737  * any issues regarding these resets. If there are any issues then
14738  * generate log entry.
14739  *
14740  * Return 0 if NIC is healthy or negative value when there are issues
14741  * with resets
14742  **/
14743 static i40e_status i40e_handle_resets(struct i40e_pf *pf)
14744 {
14745         const i40e_status pfr = i40e_pf_loop_reset(pf);
14746         const bool is_empr = i40e_check_fw_empr(pf);
14747
14748         if (is_empr || pfr != I40E_SUCCESS)
14749                 dev_crit(&pf->pdev->dev, "Entering recovery mode due to repeated FW resets. This may take several minutes. Refer to the Intel(R) Ethernet Adapters and Devices User Guide.\n");
14750
14751         return is_empr ? I40E_ERR_RESET_FAILED : pfr;
14752 }
14753
14754 /**
14755  * i40e_init_recovery_mode - initialize subsystems needed in recovery mode
14756  * @pf: board private structure
14757  * @hw: ptr to the hardware info
14758  *
14759  * This function does a minimal setup of all subsystems needed for running
14760  * recovery mode.
14761  *
14762  * Returns 0 on success, negative on failure
14763  **/
14764 static int i40e_init_recovery_mode(struct i40e_pf *pf, struct i40e_hw *hw)
14765 {
14766         struct i40e_vsi *vsi;
14767         int err;
14768         int v_idx;
14769
14770         pci_save_state(pf->pdev);
14771
14772         /* set up periodic task facility */
14773         timer_setup(&pf->service_timer, i40e_service_timer, 0);
14774         pf->service_timer_period = HZ;
14775
14776         INIT_WORK(&pf->service_task, i40e_service_task);
14777         clear_bit(__I40E_SERVICE_SCHED, pf->state);
14778
14779         err = i40e_init_interrupt_scheme(pf);
14780         if (err)
14781                 goto err_switch_setup;
14782
14783         /* The number of VSIs reported by the FW is the minimum guaranteed
14784          * to us; HW supports far more and we share the remaining pool with
14785          * the other PFs. We allocate space for more than the guarantee with
14786          * the understanding that we might not get them all later.
14787          */
14788         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
14789                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
14790         else
14791                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
14792
14793         /* Set up the vsi struct and our local tracking of the MAIN PF vsi. */
14794         pf->vsi = kcalloc(pf->num_alloc_vsi, sizeof(struct i40e_vsi *),
14795                           GFP_KERNEL);
14796         if (!pf->vsi) {
14797                 err = -ENOMEM;
14798                 goto err_switch_setup;
14799         }
14800
14801         /* We allocate one VSI which is needed as absolute minimum
14802          * in order to register the netdev
14803          */
14804         v_idx = i40e_vsi_mem_alloc(pf, I40E_VSI_MAIN);
14805         if (v_idx < 0)
14806                 goto err_switch_setup;
14807         pf->lan_vsi = v_idx;
14808         vsi = pf->vsi[v_idx];
14809         if (!vsi)
14810                 goto err_switch_setup;
14811         vsi->alloc_queue_pairs = 1;
14812         err = i40e_config_netdev(vsi);
14813         if (err)
14814                 goto err_switch_setup;
14815         err = register_netdev(vsi->netdev);
14816         if (err)
14817                 goto err_switch_setup;
14818         vsi->netdev_registered = true;
14819         i40e_dbg_pf_init(pf);
14820
14821         err = i40e_setup_misc_vector_for_recovery_mode(pf);
14822         if (err)
14823                 goto err_switch_setup;
14824
14825         /* tell the firmware that we're starting */
14826         i40e_send_version(pf);
14827
14828         /* since everything's happy, start the service_task timer */
14829         mod_timer(&pf->service_timer,
14830                   round_jiffies(jiffies + pf->service_timer_period));
14831
14832         return 0;
14833
14834 err_switch_setup:
14835         i40e_reset_interrupt_capability(pf);
14836         del_timer_sync(&pf->service_timer);
14837         i40e_shutdown_adminq(hw);
14838         iounmap(hw->hw_addr);
14839         pci_disable_pcie_error_reporting(pf->pdev);
14840         pci_release_mem_regions(pf->pdev);
14841         pci_disable_device(pf->pdev);
14842         kfree(pf);
14843
14844         return err;
14845 }
14846
14847 /**
14848  * i40e_probe - Device initialization routine
14849  * @pdev: PCI device information struct
14850  * @ent: entry in i40e_pci_tbl
14851  *
14852  * i40e_probe initializes a PF identified by a pci_dev structure.
14853  * The OS initialization, configuring of the PF private structure,
14854  * and a hardware reset occur.
14855  *
14856  * Returns 0 on success, negative on failure
14857  **/
14858 static int i40e_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
14859 {
14860         struct i40e_aq_get_phy_abilities_resp abilities;
14861         struct i40e_pf *pf;
14862         struct i40e_hw *hw;
14863         static u16 pfs_found;
14864         u16 wol_nvm_bits;
14865         u16 link_status;
14866         int err;
14867         u32 val;
14868         u32 i;
14869         u8 set_fc_aq_fail;
14870
14871         err = pci_enable_device_mem(pdev);
14872         if (err)
14873                 return err;
14874
14875         /* set up for high or low dma */
14876         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
14877         if (err) {
14878                 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
14879                 if (err) {
14880                         dev_err(&pdev->dev,
14881                                 "DMA configuration failed: 0x%x\n", err);
14882                         goto err_dma;
14883                 }
14884         }
14885
14886         /* set up pci connections */
14887         err = pci_request_mem_regions(pdev, i40e_driver_name);
14888         if (err) {
14889                 dev_info(&pdev->dev,
14890                          "pci_request_selected_regions failed %d\n", err);
14891                 goto err_pci_reg;
14892         }
14893
14894         pci_enable_pcie_error_reporting(pdev);
14895         pci_set_master(pdev);
14896
14897         /* Now that we have a PCI connection, we need to do the
14898          * low level device setup.  This is primarily setting up
14899          * the Admin Queue structures and then querying for the
14900          * device's current profile information.
14901          */
14902         pf = kzalloc(sizeof(*pf), GFP_KERNEL);
14903         if (!pf) {
14904                 err = -ENOMEM;
14905                 goto err_pf_alloc;
14906         }
14907         pf->next_vsi = 0;
14908         pf->pdev = pdev;
14909         set_bit(__I40E_DOWN, pf->state);
14910
14911         hw = &pf->hw;
14912         hw->back = pf;
14913
14914         pf->ioremap_len = min_t(int, pci_resource_len(pdev, 0),
14915                                 I40E_MAX_CSR_SPACE);
14916         /* We believe that the highest register to read is
14917          * I40E_GLGEN_STAT_CLEAR, so we check if the BAR size
14918          * is not less than that before mapping to prevent a
14919          * kernel panic.
14920          */
14921         if (pf->ioremap_len < I40E_GLGEN_STAT_CLEAR) {
14922                 dev_err(&pdev->dev, "Cannot map registers, bar size 0x%X too small, aborting\n",
14923                         pf->ioremap_len);
14924                 err = -ENOMEM;
14925                 goto err_ioremap;
14926         }
14927         hw->hw_addr = ioremap(pci_resource_start(pdev, 0), pf->ioremap_len);
14928         if (!hw->hw_addr) {
14929                 err = -EIO;
14930                 dev_info(&pdev->dev, "ioremap(0x%04x, 0x%04x) failed: 0x%x\n",
14931                          (unsigned int)pci_resource_start(pdev, 0),
14932                          pf->ioremap_len, err);
14933                 goto err_ioremap;
14934         }
14935         hw->vendor_id = pdev->vendor;
14936         hw->device_id = pdev->device;
14937         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id);
14938         hw->subsystem_vendor_id = pdev->subsystem_vendor;
14939         hw->subsystem_device_id = pdev->subsystem_device;
14940         hw->bus.device = PCI_SLOT(pdev->devfn);
14941         hw->bus.func = PCI_FUNC(pdev->devfn);
14942         hw->bus.bus_id = pdev->bus->number;
14943         pf->instance = pfs_found;
14944
14945         /* Select something other than the 802.1ad ethertype for the
14946          * switch to use internally and drop on ingress.
14947          */
14948         hw->switch_tag = 0xffff;
14949         hw->first_tag = ETH_P_8021AD;
14950         hw->second_tag = ETH_P_8021Q;
14951
14952         INIT_LIST_HEAD(&pf->l3_flex_pit_list);
14953         INIT_LIST_HEAD(&pf->l4_flex_pit_list);
14954         INIT_LIST_HEAD(&pf->ddp_old_prof);
14955
14956         /* set up the locks for the AQ, do this only once in probe
14957          * and destroy them only once in remove
14958          */
14959         mutex_init(&hw->aq.asq_mutex);
14960         mutex_init(&hw->aq.arq_mutex);
14961
14962         pf->msg_enable = netif_msg_init(debug,
14963                                         NETIF_MSG_DRV |
14964                                         NETIF_MSG_PROBE |
14965                                         NETIF_MSG_LINK);
14966         if (debug < -1)
14967                 pf->hw.debug_mask = debug;
14968
14969         /* do a special CORER for clearing PXE mode once at init */
14970         if (hw->revision_id == 0 &&
14971             (rd32(hw, I40E_GLLAN_RCTL_0) & I40E_GLLAN_RCTL_0_PXE_MODE_MASK)) {
14972                 wr32(hw, I40E_GLGEN_RTRIG, I40E_GLGEN_RTRIG_CORER_MASK);
14973                 i40e_flush(hw);
14974                 msleep(200);
14975                 pf->corer_count++;
14976
14977                 i40e_clear_pxe_mode(hw);
14978         }
14979
14980         /* Reset here to make sure all is clean and to define PF 'n' */
14981         i40e_clear_hw(hw);
14982
14983         err = i40e_set_mac_type(hw);
14984         if (err) {
14985                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
14986                          err);
14987                 goto err_pf_reset;
14988         }
14989
14990         err = i40e_handle_resets(pf);
14991         if (err)
14992                 goto err_pf_reset;
14993
14994         i40e_check_recovery_mode(pf);
14995
14996         hw->aq.num_arq_entries = I40E_AQ_LEN;
14997         hw->aq.num_asq_entries = I40E_AQ_LEN;
14998         hw->aq.arq_buf_size = I40E_MAX_AQ_BUF_SIZE;
14999         hw->aq.asq_buf_size = I40E_MAX_AQ_BUF_SIZE;
15000         pf->adminq_work_limit = I40E_AQ_WORK_LIMIT;
15001
15002         snprintf(pf->int_name, sizeof(pf->int_name) - 1,
15003                  "%s-%s:misc",
15004                  dev_driver_string(&pf->pdev->dev), dev_name(&pdev->dev));
15005
15006         err = i40e_init_shared_code(hw);
15007         if (err) {
15008                 dev_warn(&pdev->dev, "unidentified MAC or BLANK NVM: %d\n",
15009                          err);
15010                 goto err_pf_reset;
15011         }
15012
15013         /* set up a default setting for link flow control */
15014         pf->hw.fc.requested_mode = I40E_FC_NONE;
15015
15016         err = i40e_init_adminq(hw);
15017         if (err) {
15018                 if (err == I40E_ERR_FIRMWARE_API_VERSION)
15019                         dev_info(&pdev->dev,
15020                                  "The driver for the device stopped because the NVM image v%u.%u is newer than expected v%u.%u. You must install the most recent version of the network driver.\n",
15021                                  hw->aq.api_maj_ver,
15022                                  hw->aq.api_min_ver,
15023                                  I40E_FW_API_VERSION_MAJOR,
15024                                  I40E_FW_MINOR_VERSION(hw));
15025                 else
15026                         dev_info(&pdev->dev,
15027                                  "The driver for the device stopped because the device firmware failed to init. Try updating your NVM image.\n");
15028
15029                 goto err_pf_reset;
15030         }
15031         i40e_get_oem_version(hw);
15032
15033         /* provide nvm, fw, api versions, vendor:device id, subsys vendor:device id */
15034         dev_info(&pdev->dev, "fw %d.%d.%05d api %d.%d nvm %s [%04x:%04x] [%04x:%04x]\n",
15035                  hw->aq.fw_maj_ver, hw->aq.fw_min_ver, hw->aq.fw_build,
15036                  hw->aq.api_maj_ver, hw->aq.api_min_ver,
15037                  i40e_nvm_version_str(hw), hw->vendor_id, hw->device_id,
15038                  hw->subsystem_vendor_id, hw->subsystem_device_id);
15039
15040         if (hw->aq.api_maj_ver == I40E_FW_API_VERSION_MAJOR &&
15041             hw->aq.api_min_ver > I40E_FW_MINOR_VERSION(hw))
15042                 dev_info(&pdev->dev,
15043                          "The driver for the device detected a newer version of the NVM image v%u.%u than expected v%u.%u. Please install the most recent version of the network driver.\n",
15044                          hw->aq.api_maj_ver,
15045                          hw->aq.api_min_ver,
15046                          I40E_FW_API_VERSION_MAJOR,
15047                          I40E_FW_MINOR_VERSION(hw));
15048         else if (hw->aq.api_maj_ver == 1 && hw->aq.api_min_ver < 4)
15049                 dev_info(&pdev->dev,
15050                          "The driver for the device detected an older version of the NVM image v%u.%u than expected v%u.%u. Please update the NVM image.\n",
15051                          hw->aq.api_maj_ver,
15052                          hw->aq.api_min_ver,
15053                          I40E_FW_API_VERSION_MAJOR,
15054                          I40E_FW_MINOR_VERSION(hw));
15055
15056         i40e_verify_eeprom(pf);
15057
15058         /* Rev 0 hardware was never productized */
15059         if (hw->revision_id < 1)
15060                 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");
15061
15062         i40e_clear_pxe_mode(hw);
15063
15064         err = i40e_get_capabilities(pf, i40e_aqc_opc_list_func_capabilities);
15065         if (err)
15066                 goto err_adminq_setup;
15067
15068         err = i40e_sw_init(pf);
15069         if (err) {
15070                 dev_info(&pdev->dev, "sw_init failed: %d\n", err);
15071                 goto err_sw_init;
15072         }
15073
15074         if (test_bit(__I40E_RECOVERY_MODE, pf->state))
15075                 return i40e_init_recovery_mode(pf, hw);
15076
15077         err = i40e_init_lan_hmc(hw, hw->func_caps.num_tx_qp,
15078                                 hw->func_caps.num_rx_qp, 0, 0);
15079         if (err) {
15080                 dev_info(&pdev->dev, "init_lan_hmc failed: %d\n", err);
15081                 goto err_init_lan_hmc;
15082         }
15083
15084         err = i40e_configure_lan_hmc(hw, I40E_HMC_MODEL_DIRECT_ONLY);
15085         if (err) {
15086                 dev_info(&pdev->dev, "configure_lan_hmc failed: %d\n", err);
15087                 err = -ENOENT;
15088                 goto err_configure_lan_hmc;
15089         }
15090
15091         /* Disable LLDP for NICs that have firmware versions lower than v4.3.
15092          * Ignore error return codes because if it was already disabled via
15093          * hardware settings this will fail
15094          */
15095         if (pf->hw_features & I40E_HW_STOP_FW_LLDP) {
15096                 dev_info(&pdev->dev, "Stopping firmware LLDP agent.\n");
15097                 i40e_aq_stop_lldp(hw, true, false, NULL);
15098         }
15099
15100         /* allow a platform config to override the HW addr */
15101         i40e_get_platform_mac_addr(pdev, pf);
15102
15103         if (!is_valid_ether_addr(hw->mac.addr)) {
15104                 dev_info(&pdev->dev, "invalid MAC address %pM\n", hw->mac.addr);
15105                 err = -EIO;
15106                 goto err_mac_addr;
15107         }
15108         dev_info(&pdev->dev, "MAC address: %pM\n", hw->mac.addr);
15109         ether_addr_copy(hw->mac.perm_addr, hw->mac.addr);
15110         i40e_get_port_mac_addr(hw, hw->mac.port_addr);
15111         if (is_valid_ether_addr(hw->mac.port_addr))
15112                 pf->hw_features |= I40E_HW_PORT_ID_VALID;
15113
15114         pci_set_drvdata(pdev, pf);
15115         pci_save_state(pdev);
15116
15117         dev_info(&pdev->dev,
15118                  (pf->flags & I40E_FLAG_DISABLE_FW_LLDP) ?
15119                         "FW LLDP is disabled\n" :
15120                         "FW LLDP is enabled\n");
15121
15122         /* Enable FW to write default DCB config on link-up */
15123         i40e_aq_set_dcb_parameters(hw, true, NULL);
15124
15125 #ifdef CONFIG_I40E_DCB
15126         err = i40e_init_pf_dcb(pf);
15127         if (err) {
15128                 dev_info(&pdev->dev, "DCB init failed %d, disabled\n", err);
15129                 pf->flags &= ~(I40E_FLAG_DCB_CAPABLE | I40E_FLAG_DCB_ENABLED);
15130                 /* Continue without DCB enabled */
15131         }
15132 #endif /* CONFIG_I40E_DCB */
15133
15134         /* set up periodic task facility */
15135         timer_setup(&pf->service_timer, i40e_service_timer, 0);
15136         pf->service_timer_period = HZ;
15137
15138         INIT_WORK(&pf->service_task, i40e_service_task);
15139         clear_bit(__I40E_SERVICE_SCHED, pf->state);
15140
15141         /* NVM bit on means WoL disabled for the port */
15142         i40e_read_nvm_word(hw, I40E_SR_NVM_WAKE_ON_LAN, &wol_nvm_bits);
15143         if (BIT (hw->port) & wol_nvm_bits || hw->partition_id != 1)
15144                 pf->wol_en = false;
15145         else
15146                 pf->wol_en = true;
15147         device_set_wakeup_enable(&pf->pdev->dev, pf->wol_en);
15148
15149         /* set up the main switch operations */
15150         i40e_determine_queue_usage(pf);
15151         err = i40e_init_interrupt_scheme(pf);
15152         if (err)
15153                 goto err_switch_setup;
15154
15155         /* The number of VSIs reported by the FW is the minimum guaranteed
15156          * to us; HW supports far more and we share the remaining pool with
15157          * the other PFs. We allocate space for more than the guarantee with
15158          * the understanding that we might not get them all later.
15159          */
15160         if (pf->hw.func_caps.num_vsis < I40E_MIN_VSI_ALLOC)
15161                 pf->num_alloc_vsi = I40E_MIN_VSI_ALLOC;
15162         else
15163                 pf->num_alloc_vsi = pf->hw.func_caps.num_vsis;
15164
15165         /* Set up the *vsi struct and our local tracking of the MAIN PF vsi. */
15166         pf->vsi = kcalloc(pf->num_alloc_vsi, sizeof(struct i40e_vsi *),
15167                           GFP_KERNEL);
15168         if (!pf->vsi) {
15169                 err = -ENOMEM;
15170                 goto err_switch_setup;
15171         }
15172
15173 #ifdef CONFIG_PCI_IOV
15174         /* prep for VF support */
15175         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
15176             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
15177             !test_bit(__I40E_BAD_EEPROM, pf->state)) {
15178                 if (pci_num_vf(pdev))
15179                         pf->flags |= I40E_FLAG_VEB_MODE_ENABLED;
15180         }
15181 #endif
15182         err = i40e_setup_pf_switch(pf, false);
15183         if (err) {
15184                 dev_info(&pdev->dev, "setup_pf_switch failed: %d\n", err);
15185                 goto err_vsis;
15186         }
15187         INIT_LIST_HEAD(&pf->vsi[pf->lan_vsi]->ch_list);
15188
15189         /* Make sure flow control is set according to current settings */
15190         err = i40e_set_fc(hw, &set_fc_aq_fail, true);
15191         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_GET)
15192                 dev_dbg(&pf->pdev->dev,
15193                         "Set fc with err %s aq_err %s on get_phy_cap\n",
15194                         i40e_stat_str(hw, err),
15195                         i40e_aq_str(hw, hw->aq.asq_last_status));
15196         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_SET)
15197                 dev_dbg(&pf->pdev->dev,
15198                         "Set fc with err %s aq_err %s on set_phy_config\n",
15199                         i40e_stat_str(hw, err),
15200                         i40e_aq_str(hw, hw->aq.asq_last_status));
15201         if (set_fc_aq_fail & I40E_SET_FC_AQ_FAIL_UPDATE)
15202                 dev_dbg(&pf->pdev->dev,
15203                         "Set fc with err %s aq_err %s on get_link_info\n",
15204                         i40e_stat_str(hw, err),
15205                         i40e_aq_str(hw, hw->aq.asq_last_status));
15206
15207         /* if FDIR VSI was set up, start it now */
15208         for (i = 0; i < pf->num_alloc_vsi; i++) {
15209                 if (pf->vsi[i] && pf->vsi[i]->type == I40E_VSI_FDIR) {
15210                         i40e_vsi_open(pf->vsi[i]);
15211                         break;
15212                 }
15213         }
15214
15215         /* The driver only wants link up/down and module qualification
15216          * reports from firmware.  Note the negative logic.
15217          */
15218         err = i40e_aq_set_phy_int_mask(&pf->hw,
15219                                        ~(I40E_AQ_EVENT_LINK_UPDOWN |
15220                                          I40E_AQ_EVENT_MEDIA_NA |
15221                                          I40E_AQ_EVENT_MODULE_QUAL_FAIL), NULL);
15222         if (err)
15223                 dev_info(&pf->pdev->dev, "set phy mask fail, err %s aq_err %s\n",
15224                          i40e_stat_str(&pf->hw, err),
15225                          i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
15226
15227         /* Reconfigure hardware for allowing smaller MSS in the case
15228          * of TSO, so that we avoid the MDD being fired and causing
15229          * a reset in the case of small MSS+TSO.
15230          */
15231         val = rd32(hw, I40E_REG_MSS);
15232         if ((val & I40E_REG_MSS_MIN_MASK) > I40E_64BYTE_MSS) {
15233                 val &= ~I40E_REG_MSS_MIN_MASK;
15234                 val |= I40E_64BYTE_MSS;
15235                 wr32(hw, I40E_REG_MSS, val);
15236         }
15237
15238         if (pf->hw_features & I40E_HW_RESTART_AUTONEG) {
15239                 msleep(75);
15240                 err = i40e_aq_set_link_restart_an(&pf->hw, true, NULL);
15241                 if (err)
15242                         dev_info(&pf->pdev->dev, "link restart failed, err %s aq_err %s\n",
15243                                  i40e_stat_str(&pf->hw, err),
15244                                  i40e_aq_str(&pf->hw,
15245                                              pf->hw.aq.asq_last_status));
15246         }
15247         /* The main driver is (mostly) up and happy. We need to set this state
15248          * before setting up the misc vector or we get a race and the vector
15249          * ends up disabled forever.
15250          */
15251         clear_bit(__I40E_DOWN, pf->state);
15252
15253         /* In case of MSIX we are going to setup the misc vector right here
15254          * to handle admin queue events etc. In case of legacy and MSI
15255          * the misc functionality and queue processing is combined in
15256          * the same vector and that gets setup at open.
15257          */
15258         if (pf->flags & I40E_FLAG_MSIX_ENABLED) {
15259                 err = i40e_setup_misc_vector(pf);
15260                 if (err) {
15261                         dev_info(&pdev->dev,
15262                                  "setup of misc vector failed: %d\n", err);
15263                         goto err_vsis;
15264                 }
15265         }
15266
15267 #ifdef CONFIG_PCI_IOV
15268         /* prep for VF support */
15269         if ((pf->flags & I40E_FLAG_SRIOV_ENABLED) &&
15270             (pf->flags & I40E_FLAG_MSIX_ENABLED) &&
15271             !test_bit(__I40E_BAD_EEPROM, pf->state)) {
15272                 /* disable link interrupts for VFs */
15273                 val = rd32(hw, I40E_PFGEN_PORTMDIO_NUM);
15274                 val &= ~I40E_PFGEN_PORTMDIO_NUM_VFLINK_STAT_ENA_MASK;
15275                 wr32(hw, I40E_PFGEN_PORTMDIO_NUM, val);
15276                 i40e_flush(hw);
15277
15278                 if (pci_num_vf(pdev)) {
15279                         dev_info(&pdev->dev,
15280                                  "Active VFs found, allocating resources.\n");
15281                         err = i40e_alloc_vfs(pf, pci_num_vf(pdev));
15282                         if (err)
15283                                 dev_info(&pdev->dev,
15284                                          "Error %d allocating resources for existing VFs\n",
15285                                          err);
15286                 }
15287         }
15288 #endif /* CONFIG_PCI_IOV */
15289
15290         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
15291                 pf->iwarp_base_vector = i40e_get_lump(pf, pf->irq_pile,
15292                                                       pf->num_iwarp_msix,
15293                                                       I40E_IWARP_IRQ_PILE_ID);
15294                 if (pf->iwarp_base_vector < 0) {
15295                         dev_info(&pdev->dev,
15296                                  "failed to get tracking for %d vectors for IWARP err=%d\n",
15297                                  pf->num_iwarp_msix, pf->iwarp_base_vector);
15298                         pf->flags &= ~I40E_FLAG_IWARP_ENABLED;
15299                 }
15300         }
15301
15302         i40e_dbg_pf_init(pf);
15303
15304         /* tell the firmware that we're starting */
15305         i40e_send_version(pf);
15306
15307         /* since everything's happy, start the service_task timer */
15308         mod_timer(&pf->service_timer,
15309                   round_jiffies(jiffies + pf->service_timer_period));
15310
15311         /* add this PF to client device list and launch a client service task */
15312         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
15313                 err = i40e_lan_add_device(pf);
15314                 if (err)
15315                         dev_info(&pdev->dev, "Failed to add PF to client API service list: %d\n",
15316                                  err);
15317         }
15318
15319 #define PCI_SPEED_SIZE 8
15320 #define PCI_WIDTH_SIZE 8
15321         /* Devices on the IOSF bus do not have this information
15322          * and will report PCI Gen 1 x 1 by default so don't bother
15323          * checking them.
15324          */
15325         if (!(pf->hw_features & I40E_HW_NO_PCI_LINK_CHECK)) {
15326                 char speed[PCI_SPEED_SIZE] = "Unknown";
15327                 char width[PCI_WIDTH_SIZE] = "Unknown";
15328
15329                 /* Get the negotiated link width and speed from PCI config
15330                  * space
15331                  */
15332                 pcie_capability_read_word(pf->pdev, PCI_EXP_LNKSTA,
15333                                           &link_status);
15334
15335                 i40e_set_pci_config_data(hw, link_status);
15336
15337                 switch (hw->bus.speed) {
15338                 case i40e_bus_speed_8000:
15339                         strlcpy(speed, "8.0", PCI_SPEED_SIZE); break;
15340                 case i40e_bus_speed_5000:
15341                         strlcpy(speed, "5.0", PCI_SPEED_SIZE); break;
15342                 case i40e_bus_speed_2500:
15343                         strlcpy(speed, "2.5", PCI_SPEED_SIZE); break;
15344                 default:
15345                         break;
15346                 }
15347                 switch (hw->bus.width) {
15348                 case i40e_bus_width_pcie_x8:
15349                         strlcpy(width, "8", PCI_WIDTH_SIZE); break;
15350                 case i40e_bus_width_pcie_x4:
15351                         strlcpy(width, "4", PCI_WIDTH_SIZE); break;
15352                 case i40e_bus_width_pcie_x2:
15353                         strlcpy(width, "2", PCI_WIDTH_SIZE); break;
15354                 case i40e_bus_width_pcie_x1:
15355                         strlcpy(width, "1", PCI_WIDTH_SIZE); break;
15356                 default:
15357                         break;
15358                 }
15359
15360                 dev_info(&pdev->dev, "PCI-Express: Speed %sGT/s Width x%s\n",
15361                          speed, width);
15362
15363                 if (hw->bus.width < i40e_bus_width_pcie_x8 ||
15364                     hw->bus.speed < i40e_bus_speed_8000) {
15365                         dev_warn(&pdev->dev, "PCI-Express bandwidth available for this device may be insufficient for optimal performance.\n");
15366                         dev_warn(&pdev->dev, "Please move the device to a different PCI-e link with more lanes and/or higher transfer rate.\n");
15367                 }
15368         }
15369
15370         /* get the requested speeds from the fw */
15371         err = i40e_aq_get_phy_capabilities(hw, false, false, &abilities, NULL);
15372         if (err)
15373                 dev_dbg(&pf->pdev->dev, "get requested speeds ret =  %s last_status =  %s\n",
15374                         i40e_stat_str(&pf->hw, err),
15375                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
15376         pf->hw.phy.link_info.requested_speeds = abilities.link_speed;
15377
15378         /* set the FEC config due to the board capabilities */
15379         i40e_set_fec_in_flags(abilities.fec_cfg_curr_mod_ext_info, &pf->flags);
15380
15381         /* get the supported phy types from the fw */
15382         err = i40e_aq_get_phy_capabilities(hw, false, true, &abilities, NULL);
15383         if (err)
15384                 dev_dbg(&pf->pdev->dev, "get supported phy types ret =  %s last_status =  %s\n",
15385                         i40e_stat_str(&pf->hw, err),
15386                         i40e_aq_str(&pf->hw, pf->hw.aq.asq_last_status));
15387
15388         /* make sure the MFS hasn't been set lower than the default */
15389 #define MAX_FRAME_SIZE_DEFAULT 0x2600
15390         val = (rd32(&pf->hw, I40E_PRTGL_SAH) &
15391                I40E_PRTGL_SAH_MFS_MASK) >> I40E_PRTGL_SAH_MFS_SHIFT;
15392         if (val < MAX_FRAME_SIZE_DEFAULT)
15393                 dev_warn(&pdev->dev, "MFS for port %x has been set below the default: %x\n",
15394                          i, val);
15395
15396         /* Add a filter to drop all Flow control frames from any VSI from being
15397          * transmitted. By doing so we stop a malicious VF from sending out
15398          * PAUSE or PFC frames and potentially controlling traffic for other
15399          * PF/VF VSIs.
15400          * The FW can still send Flow control frames if enabled.
15401          */
15402         i40e_add_filter_to_drop_tx_flow_control_frames(&pf->hw,
15403                                                        pf->main_vsi_seid);
15404
15405         if ((pf->hw.device_id == I40E_DEV_ID_10G_BASE_T) ||
15406                 (pf->hw.device_id == I40E_DEV_ID_10G_BASE_T4))
15407                 pf->hw_features |= I40E_HW_PHY_CONTROLS_LEDS;
15408         if (pf->hw.device_id == I40E_DEV_ID_SFP_I_X722)
15409                 pf->hw_features |= I40E_HW_HAVE_CRT_RETIMER;
15410         /* print a string summarizing features */
15411         i40e_print_features(pf);
15412
15413         return 0;
15414
15415         /* Unwind what we've done if something failed in the setup */
15416 err_vsis:
15417         set_bit(__I40E_DOWN, pf->state);
15418         i40e_clear_interrupt_scheme(pf);
15419         kfree(pf->vsi);
15420 err_switch_setup:
15421         i40e_reset_interrupt_capability(pf);
15422         del_timer_sync(&pf->service_timer);
15423 err_mac_addr:
15424 err_configure_lan_hmc:
15425         (void)i40e_shutdown_lan_hmc(hw);
15426 err_init_lan_hmc:
15427         kfree(pf->qp_pile);
15428 err_sw_init:
15429 err_adminq_setup:
15430 err_pf_reset:
15431         iounmap(hw->hw_addr);
15432 err_ioremap:
15433         kfree(pf);
15434 err_pf_alloc:
15435         pci_disable_pcie_error_reporting(pdev);
15436         pci_release_mem_regions(pdev);
15437 err_pci_reg:
15438 err_dma:
15439         pci_disable_device(pdev);
15440         return err;
15441 }
15442
15443 /**
15444  * i40e_remove - Device removal routine
15445  * @pdev: PCI device information struct
15446  *
15447  * i40e_remove is called by the PCI subsystem to alert the driver
15448  * that is should release a PCI device.  This could be caused by a
15449  * Hot-Plug event, or because the driver is going to be removed from
15450  * memory.
15451  **/
15452 static void i40e_remove(struct pci_dev *pdev)
15453 {
15454         struct i40e_pf *pf = pci_get_drvdata(pdev);
15455         struct i40e_hw *hw = &pf->hw;
15456         i40e_status ret_code;
15457         int i;
15458
15459         i40e_dbg_pf_exit(pf);
15460
15461         i40e_ptp_stop(pf);
15462
15463         /* Disable RSS in hw */
15464         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(0), 0);
15465         i40e_write_rx_ctl(hw, I40E_PFQF_HENA(1), 0);
15466
15467         while (test_bit(__I40E_RESET_RECOVERY_PENDING, pf->state))
15468                 usleep_range(1000, 2000);
15469
15470         /* no more scheduling of any task */
15471         set_bit(__I40E_SUSPENDED, pf->state);
15472         set_bit(__I40E_DOWN, pf->state);
15473         if (pf->service_timer.function)
15474                 del_timer_sync(&pf->service_timer);
15475         if (pf->service_task.func)
15476                 cancel_work_sync(&pf->service_task);
15477
15478         if (test_bit(__I40E_RECOVERY_MODE, pf->state)) {
15479                 struct i40e_vsi *vsi = pf->vsi[0];
15480
15481                 /* We know that we have allocated only one vsi for this PF,
15482                  * it was just for registering netdevice, so the interface
15483                  * could be visible in the 'ifconfig' output
15484                  */
15485                 unregister_netdev(vsi->netdev);
15486                 free_netdev(vsi->netdev);
15487
15488                 goto unmap;
15489         }
15490
15491         /* Client close must be called explicitly here because the timer
15492          * has been stopped.
15493          */
15494         i40e_notify_client_of_netdev_close(pf->vsi[pf->lan_vsi], false);
15495
15496         if (pf->flags & I40E_FLAG_SRIOV_ENABLED) {
15497                 i40e_free_vfs(pf);
15498                 pf->flags &= ~I40E_FLAG_SRIOV_ENABLED;
15499         }
15500
15501         i40e_fdir_teardown(pf);
15502
15503         /* If there is a switch structure or any orphans, remove them.
15504          * This will leave only the PF's VSI remaining.
15505          */
15506         for (i = 0; i < I40E_MAX_VEB; i++) {
15507                 if (!pf->veb[i])
15508                         continue;
15509
15510                 if (pf->veb[i]->uplink_seid == pf->mac_seid ||
15511                     pf->veb[i]->uplink_seid == 0)
15512                         i40e_switch_branch_release(pf->veb[i]);
15513         }
15514
15515         /* Now we can shutdown the PF's VSI, just before we kill
15516          * adminq and hmc.
15517          */
15518         if (pf->vsi[pf->lan_vsi])
15519                 i40e_vsi_release(pf->vsi[pf->lan_vsi]);
15520
15521         i40e_cloud_filter_exit(pf);
15522
15523         /* remove attached clients */
15524         if (pf->flags & I40E_FLAG_IWARP_ENABLED) {
15525                 ret_code = i40e_lan_del_device(pf);
15526                 if (ret_code)
15527                         dev_warn(&pdev->dev, "Failed to delete client device: %d\n",
15528                                  ret_code);
15529         }
15530
15531         /* shutdown and destroy the HMC */
15532         if (hw->hmc.hmc_obj) {
15533                 ret_code = i40e_shutdown_lan_hmc(hw);
15534                 if (ret_code)
15535                         dev_warn(&pdev->dev,
15536                                  "Failed to destroy the HMC resources: %d\n",
15537                                  ret_code);
15538         }
15539
15540 unmap:
15541         /* Free MSI/legacy interrupt 0 when in recovery mode. */
15542         if (test_bit(__I40E_RECOVERY_MODE, pf->state) &&
15543             !(pf->flags & I40E_FLAG_MSIX_ENABLED))
15544                 free_irq(pf->pdev->irq, pf);
15545
15546         /* shutdown the adminq */
15547         i40e_shutdown_adminq(hw);
15548
15549         /* destroy the locks only once, here */
15550         mutex_destroy(&hw->aq.arq_mutex);
15551         mutex_destroy(&hw->aq.asq_mutex);
15552
15553         /* Clear all dynamic memory lists of rings, q_vectors, and VSIs */
15554         rtnl_lock();
15555         i40e_clear_interrupt_scheme(pf);
15556         for (i = 0; i < pf->num_alloc_vsi; i++) {
15557                 if (pf->vsi[i]) {
15558                         if (!test_bit(__I40E_RECOVERY_MODE, pf->state))
15559                                 i40e_vsi_clear_rings(pf->vsi[i]);
15560                         i40e_vsi_clear(pf->vsi[i]);
15561                         pf->vsi[i] = NULL;
15562                 }
15563         }
15564         rtnl_unlock();
15565
15566         for (i = 0; i < I40E_MAX_VEB; i++) {
15567                 kfree(pf->veb[i]);
15568                 pf->veb[i] = NULL;
15569         }
15570
15571         kfree(pf->qp_pile);
15572         kfree(pf->vsi);
15573
15574         iounmap(hw->hw_addr);
15575         kfree(pf);
15576         pci_release_mem_regions(pdev);
15577
15578         pci_disable_pcie_error_reporting(pdev);
15579         pci_disable_device(pdev);
15580 }
15581
15582 /**
15583  * i40e_pci_error_detected - warning that something funky happened in PCI land
15584  * @pdev: PCI device information struct
15585  * @error: the type of PCI error
15586  *
15587  * Called to warn that something happened and the error handling steps
15588  * are in progress.  Allows the driver to quiesce things, be ready for
15589  * remediation.
15590  **/
15591 static pci_ers_result_t i40e_pci_error_detected(struct pci_dev *pdev,
15592                                                 pci_channel_state_t error)
15593 {
15594         struct i40e_pf *pf = pci_get_drvdata(pdev);
15595
15596         dev_info(&pdev->dev, "%s: error %d\n", __func__, error);
15597
15598         if (!pf) {
15599                 dev_info(&pdev->dev,
15600                          "Cannot recover - error happened during device probe\n");
15601                 return PCI_ERS_RESULT_DISCONNECT;
15602         }
15603
15604         /* shutdown all operations */
15605         if (!test_bit(__I40E_SUSPENDED, pf->state))
15606                 i40e_prep_for_reset(pf, false);
15607
15608         /* Request a slot reset */
15609         return PCI_ERS_RESULT_NEED_RESET;
15610 }
15611
15612 /**
15613  * i40e_pci_error_slot_reset - a PCI slot reset just happened
15614  * @pdev: PCI device information struct
15615  *
15616  * Called to find if the driver can work with the device now that
15617  * the pci slot has been reset.  If a basic connection seems good
15618  * (registers are readable and have sane content) then return a
15619  * happy little PCI_ERS_RESULT_xxx.
15620  **/
15621 static pci_ers_result_t i40e_pci_error_slot_reset(struct pci_dev *pdev)
15622 {
15623         struct i40e_pf *pf = pci_get_drvdata(pdev);
15624         pci_ers_result_t result;
15625         u32 reg;
15626
15627         dev_dbg(&pdev->dev, "%s\n", __func__);
15628         if (pci_enable_device_mem(pdev)) {
15629                 dev_info(&pdev->dev,
15630                          "Cannot re-enable PCI device after reset.\n");
15631                 result = PCI_ERS_RESULT_DISCONNECT;
15632         } else {
15633                 pci_set_master(pdev);
15634                 pci_restore_state(pdev);
15635                 pci_save_state(pdev);
15636                 pci_wake_from_d3(pdev, false);
15637
15638                 reg = rd32(&pf->hw, I40E_GLGEN_RTRIG);
15639                 if (reg == 0)
15640                         result = PCI_ERS_RESULT_RECOVERED;
15641                 else
15642                         result = PCI_ERS_RESULT_DISCONNECT;
15643         }
15644
15645         return result;
15646 }
15647
15648 /**
15649  * i40e_pci_error_reset_prepare - prepare device driver for pci reset
15650  * @pdev: PCI device information struct
15651  */
15652 static void i40e_pci_error_reset_prepare(struct pci_dev *pdev)
15653 {
15654         struct i40e_pf *pf = pci_get_drvdata(pdev);
15655
15656         i40e_prep_for_reset(pf, false);
15657 }
15658
15659 /**
15660  * i40e_pci_error_reset_done - pci reset done, device driver reset can begin
15661  * @pdev: PCI device information struct
15662  */
15663 static void i40e_pci_error_reset_done(struct pci_dev *pdev)
15664 {
15665         struct i40e_pf *pf = pci_get_drvdata(pdev);
15666
15667         i40e_reset_and_rebuild(pf, false, false);
15668 }
15669
15670 /**
15671  * i40e_pci_error_resume - restart operations after PCI error recovery
15672  * @pdev: PCI device information struct
15673  *
15674  * Called to allow the driver to bring things back up after PCI error
15675  * and/or reset recovery has finished.
15676  **/
15677 static void i40e_pci_error_resume(struct pci_dev *pdev)
15678 {
15679         struct i40e_pf *pf = pci_get_drvdata(pdev);
15680
15681         dev_dbg(&pdev->dev, "%s\n", __func__);
15682         if (test_bit(__I40E_SUSPENDED, pf->state))
15683                 return;
15684
15685         i40e_handle_reset_warning(pf, false);
15686 }
15687
15688 /**
15689  * i40e_enable_mc_magic_wake - enable multicast magic packet wake up
15690  * using the mac_address_write admin q function
15691  * @pf: pointer to i40e_pf struct
15692  **/
15693 static void i40e_enable_mc_magic_wake(struct i40e_pf *pf)
15694 {
15695         struct i40e_hw *hw = &pf->hw;
15696         i40e_status ret;
15697         u8 mac_addr[6];
15698         u16 flags = 0;
15699
15700         /* Get current MAC address in case it's an LAA */
15701         if (pf->vsi[pf->lan_vsi] && pf->vsi[pf->lan_vsi]->netdev) {
15702                 ether_addr_copy(mac_addr,
15703                                 pf->vsi[pf->lan_vsi]->netdev->dev_addr);
15704         } else {
15705                 dev_err(&pf->pdev->dev,
15706                         "Failed to retrieve MAC address; using default\n");
15707                 ether_addr_copy(mac_addr, hw->mac.addr);
15708         }
15709
15710         /* The FW expects the mac address write cmd to first be called with
15711          * one of these flags before calling it again with the multicast
15712          * enable flags.
15713          */
15714         flags = I40E_AQC_WRITE_TYPE_LAA_WOL;
15715
15716         if (hw->func_caps.flex10_enable && hw->partition_id != 1)
15717                 flags = I40E_AQC_WRITE_TYPE_LAA_ONLY;
15718
15719         ret = i40e_aq_mac_address_write(hw, flags, mac_addr, NULL);
15720         if (ret) {
15721                 dev_err(&pf->pdev->dev,
15722                         "Failed to update MAC address registers; cannot enable Multicast Magic packet wake up");
15723                 return;
15724         }
15725
15726         flags = I40E_AQC_MC_MAG_EN
15727                         | I40E_AQC_WOL_PRESERVE_ON_PFR
15728                         | I40E_AQC_WRITE_TYPE_UPDATE_MC_MAG;
15729         ret = i40e_aq_mac_address_write(hw, flags, mac_addr, NULL);
15730         if (ret)
15731                 dev_err(&pf->pdev->dev,
15732                         "Failed to enable Multicast Magic Packet wake up\n");
15733 }
15734
15735 /**
15736  * i40e_shutdown - PCI callback for shutting down
15737  * @pdev: PCI device information struct
15738  **/
15739 static void i40e_shutdown(struct pci_dev *pdev)
15740 {
15741         struct i40e_pf *pf = pci_get_drvdata(pdev);
15742         struct i40e_hw *hw = &pf->hw;
15743
15744         set_bit(__I40E_SUSPENDED, pf->state);
15745         set_bit(__I40E_DOWN, pf->state);
15746
15747         del_timer_sync(&pf->service_timer);
15748         cancel_work_sync(&pf->service_task);
15749         i40e_cloud_filter_exit(pf);
15750         i40e_fdir_teardown(pf);
15751
15752         /* Client close must be called explicitly here because the timer
15753          * has been stopped.
15754          */
15755         i40e_notify_client_of_netdev_close(pf->vsi[pf->lan_vsi], false);
15756
15757         if (pf->wol_en && (pf->hw_features & I40E_HW_WOL_MC_MAGIC_PKT_WAKE))
15758                 i40e_enable_mc_magic_wake(pf);
15759
15760         i40e_prep_for_reset(pf, false);
15761
15762         wr32(hw, I40E_PFPM_APM,
15763              (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
15764         wr32(hw, I40E_PFPM_WUFC,
15765              (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
15766
15767         /* Free MSI/legacy interrupt 0 when in recovery mode. */
15768         if (test_bit(__I40E_RECOVERY_MODE, pf->state) &&
15769             !(pf->flags & I40E_FLAG_MSIX_ENABLED))
15770                 free_irq(pf->pdev->irq, pf);
15771
15772         /* Since we're going to destroy queues during the
15773          * i40e_clear_interrupt_scheme() we should hold the RTNL lock for this
15774          * whole section
15775          */
15776         rtnl_lock();
15777         i40e_clear_interrupt_scheme(pf);
15778         rtnl_unlock();
15779
15780         if (system_state == SYSTEM_POWER_OFF) {
15781                 pci_wake_from_d3(pdev, pf->wol_en);
15782                 pci_set_power_state(pdev, PCI_D3hot);
15783         }
15784 }
15785
15786 /**
15787  * i40e_suspend - PM callback for moving to D3
15788  * @dev: generic device information structure
15789  **/
15790 static int __maybe_unused i40e_suspend(struct device *dev)
15791 {
15792         struct i40e_pf *pf = dev_get_drvdata(dev);
15793         struct i40e_hw *hw = &pf->hw;
15794
15795         /* If we're already suspended, then there is nothing to do */
15796         if (test_and_set_bit(__I40E_SUSPENDED, pf->state))
15797                 return 0;
15798
15799         set_bit(__I40E_DOWN, pf->state);
15800
15801         /* Ensure service task will not be running */
15802         del_timer_sync(&pf->service_timer);
15803         cancel_work_sync(&pf->service_task);
15804
15805         /* Client close must be called explicitly here because the timer
15806          * has been stopped.
15807          */
15808         i40e_notify_client_of_netdev_close(pf->vsi[pf->lan_vsi], false);
15809
15810         if (pf->wol_en && (pf->hw_features & I40E_HW_WOL_MC_MAGIC_PKT_WAKE))
15811                 i40e_enable_mc_magic_wake(pf);
15812
15813         /* Since we're going to destroy queues during the
15814          * i40e_clear_interrupt_scheme() we should hold the RTNL lock for this
15815          * whole section
15816          */
15817         rtnl_lock();
15818
15819         i40e_prep_for_reset(pf, true);
15820
15821         wr32(hw, I40E_PFPM_APM, (pf->wol_en ? I40E_PFPM_APM_APME_MASK : 0));
15822         wr32(hw, I40E_PFPM_WUFC, (pf->wol_en ? I40E_PFPM_WUFC_MAG_MASK : 0));
15823
15824         /* Clear the interrupt scheme and release our IRQs so that the system
15825          * can safely hibernate even when there are a large number of CPUs.
15826          * Otherwise hibernation might fail when mapping all the vectors back
15827          * to CPU0.
15828          */
15829         i40e_clear_interrupt_scheme(pf);
15830
15831         rtnl_unlock();
15832
15833         return 0;
15834 }
15835
15836 /**
15837  * i40e_resume - PM callback for waking up from D3
15838  * @dev: generic device information structure
15839  **/
15840 static int __maybe_unused i40e_resume(struct device *dev)
15841 {
15842         struct i40e_pf *pf = dev_get_drvdata(dev);
15843         int err;
15844
15845         /* If we're not suspended, then there is nothing to do */
15846         if (!test_bit(__I40E_SUSPENDED, pf->state))
15847                 return 0;
15848
15849         /* We need to hold the RTNL lock prior to restoring interrupt schemes,
15850          * since we're going to be restoring queues
15851          */
15852         rtnl_lock();
15853
15854         /* We cleared the interrupt scheme when we suspended, so we need to
15855          * restore it now to resume device functionality.
15856          */
15857         err = i40e_restore_interrupt_scheme(pf);
15858         if (err) {
15859                 dev_err(dev, "Cannot restore interrupt scheme: %d\n",
15860                         err);
15861         }
15862
15863         clear_bit(__I40E_DOWN, pf->state);
15864         i40e_reset_and_rebuild(pf, false, true);
15865
15866         rtnl_unlock();
15867
15868         /* Clear suspended state last after everything is recovered */
15869         clear_bit(__I40E_SUSPENDED, pf->state);
15870
15871         /* Restart the service task */
15872         mod_timer(&pf->service_timer,
15873                   round_jiffies(jiffies + pf->service_timer_period));
15874
15875         return 0;
15876 }
15877
15878 static const struct pci_error_handlers i40e_err_handler = {
15879         .error_detected = i40e_pci_error_detected,
15880         .slot_reset = i40e_pci_error_slot_reset,
15881         .reset_prepare = i40e_pci_error_reset_prepare,
15882         .reset_done = i40e_pci_error_reset_done,
15883         .resume = i40e_pci_error_resume,
15884 };
15885
15886 static SIMPLE_DEV_PM_OPS(i40e_pm_ops, i40e_suspend, i40e_resume);
15887
15888 static struct pci_driver i40e_driver = {
15889         .name     = i40e_driver_name,
15890         .id_table = i40e_pci_tbl,
15891         .probe    = i40e_probe,
15892         .remove   = i40e_remove,
15893         .driver   = {
15894                 .pm = &i40e_pm_ops,
15895         },
15896         .shutdown = i40e_shutdown,
15897         .err_handler = &i40e_err_handler,
15898         .sriov_configure = i40e_pci_sriov_configure,
15899 };
15900
15901 /**
15902  * i40e_init_module - Driver registration routine
15903  *
15904  * i40e_init_module is the first routine called when the driver is
15905  * loaded. All it does is register with the PCI subsystem.
15906  **/
15907 static int __init i40e_init_module(void)
15908 {
15909         pr_info("%s: %s\n", i40e_driver_name, i40e_driver_string);
15910         pr_info("%s: %s\n", i40e_driver_name, i40e_copyright);
15911
15912         /* There is no need to throttle the number of active tasks because
15913          * each device limits its own task using a state bit for scheduling
15914          * the service task, and the device tasks do not interfere with each
15915          * other, so we don't set a max task limit. We must set WQ_MEM_RECLAIM
15916          * since we need to be able to guarantee forward progress even under
15917          * memory pressure.
15918          */
15919         i40e_wq = alloc_workqueue("%s", WQ_MEM_RECLAIM, 0, i40e_driver_name);
15920         if (!i40e_wq) {
15921                 pr_err("%s: Failed to create workqueue\n", i40e_driver_name);
15922                 return -ENOMEM;
15923         }
15924
15925         i40e_dbg_init();
15926         return pci_register_driver(&i40e_driver);
15927 }
15928 module_init(i40e_init_module);
15929
15930 /**
15931  * i40e_exit_module - Driver exit cleanup routine
15932  *
15933  * i40e_exit_module is called just before the driver is removed
15934  * from memory.
15935  **/
15936 static void __exit i40e_exit_module(void)
15937 {
15938         pci_unregister_driver(&i40e_driver);
15939         destroy_workqueue(i40e_wq);
15940         i40e_dbg_exit();
15941 }
15942 module_exit(i40e_exit_module);